CN101594335B

CN101594335B - Mapping method for reference signals and physical resource block

Info

Publication number: CN101594335B
Application number: CN200910150224.XA
Authority: CN
Inventors: 戴博; 孙云锋; 郁光辉; 杨勋
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2009-06-19
Filing date: 2009-06-19
Publication date: 2017-02-08
Anticipated expiration: 2029-06-19
Also published as: CN101594335A

Abstract

The invention provides a mapping method for reference signals and a physical resource block, which is used for mapping one-path or multi-path reference signals to the physical resource block of a long-term evolution system, wherein the physical resource block comprises 12 subcarriers on a frequency domain and comprises two continuous time slots with equal time domain lengths, and each path of reference signal comprises a plurality of reference signals. The method comprises the following steps: mapping the one-path or multi-path reference signals to N orthogonal frequency division multiplexing (OFDM) symbols of the physical resource block, wherein N is selected from one of 2, 3 and 4; and mapping each path of reference signals to M subcarriers on the OFDM symbols, wherein M is selected from one of 1, 2, 3 and 4. By defining the position of each reference signal in the physical resource block based on lamination, the method is comparatively simple to realize, improves the performance of an LTE system, is favorable for expanding to the design of the reference signals of high-order MIMO, and has good forward compatibility.

Description

Reference signal and the mapping method of Physical Resource Block

Technical field

The present invention relates to the communications field, the mapping method of more particularly, to a kind of reference signal and Physical Resource Block.

Background technology

Long Term Evolution (Long Term Evolution, referred to as LTE) system is the important meter of third generation partnership Draw.When LTE system adopts conventional cyclic prefix, a time slot comprises the uplink/downlink symbol of 7 length, and LTE system is using extension During Cyclic Prefix, a time slot comprises the uplink/downlink symbol of 6 length.Fig. 1 be LTE system system bandwidth be 5MHz when The structural representation of Physical Resource Block, as shown in figure 1, a Resource Unit (ResourceElement, referred to as RE) is one One of OFDM symbol subcarrier, and a downlink resource block (Resource Block, referred to as RB) is by continuous 12 Subcarrier and continuous 7 (being 6 when extended cyclic prefix) OFDM symbol are constituted.One Resource Unit is on frequency domain 180kHz, time domain is the time span of a general time slot, when carrying out resource allocation, can be entered with Resource Block for base unit Row distribution.

LTE system supports the MIMO application of 4 antennas, for example, antenna port #0, antenna port #1, antenna port #2, antenna Port #3, and, antenna port #0, antenna port #1, antenna port #2, antenna port #3 all cells using full bandwidth are proprietary Reference signal (Cell-specific reference signals, referred to as CRS) mode, the function of this CRS is：To descending Channel carries out mass measurement, and down channel is estimated with (demodulation).When Cyclic Prefix is for conventional cyclic prefix, These publicly-owned reference signal positions in Physical Resource Block as shown in Figure 2 a, when Cyclic Prefix is for extended cyclic prefix Wait, these publicly-owned reference signal positions in Physical Resource Block are as shown in Figure 2 b.In addition, a kind of also proprietary ginseng of user Examine signal (UE-specific reference signals), this reference signal only shares letter in the proprietary physical down of user It is transmitted on the time-frequency domain position that road (Physical downlink shared channel, referred to as PDSCH) is located.

Senior long term evolution (Further Advancements for E-UTRA, LTE-Advanced) system is LTE The evolution version of Release-8.LTE-Advanced is except needing to meet or more than 3GPP TR 25.913： The all related of " Requirements for EvolvedUTRA (E-UTRA) and Evolved UTRAN (E-UTRAN) " needs Ask outer, also should meet or exceed the demand of the IMT-Advanced of ITU-R proposition.Wherein, simultaneous backward with LTE Release-8 The demand held refers to：The terminal of LTE Release-8 can work in the network of LTE-Advanced, LTE-Advanced's Terminal can work in the network of LTE Release-8.

At present, specify that LTE- in demand behaviors report TR 36.814 V0.1.1 of LTE-Advanced The descending application that at most can support 8 antennas of Advanced；To LTE-Advanced in the 56th meeting of 2009 2 months 3GPP Specify that as supporting the application of 8 antennas and the descending using lower LTE-Advanced of the technology such as CoMP, double-current Beamforming The design basic framework (Way forward) of reference signal, will be defined as to the downlink reference signal that LTE-Advanced operates Two kinds of reference signal：Towards the reference signal of PDSCH demodulation with towards channel condition information (Channel Status Information, referred to as CSI) reference signal that produces, and, the reference signal towards PDSCH demodulation is based on layer and sends, A kind of reference signal of every layer of correspondence, at present, in LTE-Advanced system, the number of plies that at most can support is 8, major programme As shown in Figure 3 a and Figure 3 b shows.

However, because the frequency domain position in different time domain OFDM symbol for the reference signal on same road is different, this leads The complexity realized is caused to become big.

Content of the invention

The present invention is intended to provide the mapping method of a kind of reference signal and Physical Resource Block, to solve the mapping of correlation technique The larger problem of the implementation complexity of method.

According to an aspect of the invention, it is provided the mapping method of a kind of reference signal and Physical Resource Block, for inciting somebody to action One or more reference signal is mapped on the Physical Resource Block of long evolving system, and wherein, Physical Resource Block wraps on frequency domain Containing 12 subcarriers, Physical Resource Block includes two equal continuous slots of time domain length, and every road reference signal all includes Multiple reference signals, including：One or more reference signal is mapped to N number of orthogonal frequency division multiplex OFDM symbol of Physical Resource Block On number, wherein, the value of N is one below：2、3、4；Each road reference signal is mapped to M subcarrier in OFDM symbol On, wherein, the value of M is one below：1,2,3,4.

The mapping method of above-described embodiment position in Physical Resource Block by each reference signal clearly based on layer, makes Must realize fairly simple, and LTE system performance is improved, be conducive to the reference signal expanding to the MIMO of high-order to set Meter, has good forward compatibility.

Brief description

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this Bright schematic description and description is used for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is the schematic diagram of the Physical Resource Block of LTE system that system bandwidth according to correlation technique is 5MHz；

Fig. 2 is the signal according to cell special reference signal position in Physical Resource Block in the LTE system of correlation technique Figure；

Fig. 3 is the schematic diagram of the proprietary two-layer reference signal position in Physical Resource Block of existing terminal；

Fig. 4 is the flow chart of the mapping method of reference signal according to the inventive method embodiment and Physical Resource Block；

Fig. 5 is the schematic diagram of the reference signal position of the example 1 of method shown in Fig. 4；

Fig. 6 is the schematic diagram of the reference signal position of the example 2 of the method shown in Fig. 4；

Fig. 7 is the schematic diagram of the reference signal position of the example 3 of the method shown in Fig. 4；

Fig. 8 is the schematic diagram of the reference signal position of the example 4 of the method shown in Fig. 4.

Specific embodiment

Functional overview

At present, the mapping scheme of reference signal or the cell special reference signal based on antenna port, or base In one or more layers special reference signal, for this problem, the invention provides a kind of reference signal and Physical Resource Block Mapping scheme, this reference signal can be the reference signal based on layer, to support the use of relevant art, provided by the present invention Mapping scheme, the overall performance of system can be improved.

In the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated it will be appreciated that preferred reality described herein Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.

Embodiment of the method

According to embodiments of the present invention, there is provided the mapping method of a kind of reference signal and Physical Resource Block.

Fig. 4 is the flow chart of the mapping of reference signal according to embodiments of the present invention and Physical Resource Block, needs explanation It is, for the ease of description, to illustrate and describe the technical scheme of method of the present invention embodiment in the diagram in the form of step, Shown step can execute in the computer system of such as one group of computer executable instructions in the diagram.Although in Fig. 4 In show logical order, but in some cases, can be with the step shown or described different from order execution herein Suddenly.As shown in figure 4, the method is used for one or more reference signal is mapped to the Physical Resource Block of long evolving system, Wherein, Physical Resource Block comprises 12 subcarriers on frequency domain, and Physical Resource Block includes two equal consecutive hourss of time domain length Gap, and every road reference signal all includes multiple reference signals, specifically, comprises the following steps：

Step S302, one or more reference signal is mapped to N number of orthogonal frequency division multiplex OFDM symbol of Physical Resource Block On number, wherein, the value of N is one below：2、3、4；

Step S304, each road reference signal is mapped on M subcarrier in OFDM symbol, and wherein, the value of M is One below：1,2,3,4；

By technical scheme provided in an embodiment of the present invention, by each reference signal clearly based on layer in Physical Resource Block In position, filled up the blank of prior art, by the resource block mapping scheme of reference signal of the present invention so that realize compare Simply.

In addition, the mapping method of prior art is also unfavorable for expanding to the reference signal design of high-order mimo, and, its biography Defeated performance is not optimum, and this method is conducive to expanding to the reference signal design of the MIMO of high-order, has fine forward direction Compatibility.

Alternative embodiment 1, LTE system adopts conventional cyclic prefix, and Physical Resource Block comprises 14 OFDM symbol in time domain, Multichannel reference signal is 2 tunnels, and 2 tunnel reference signals are mapped in 4 OFDM symbol of Physical Resource Block, and each road is joined Examine and following at least one method is specifically included on the M subcarrier that signal is mapped in OFDM symbol：

Method one：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+4, the 3rd OFDM of 12,4 OFDM symbol of subcarrier (A+8) mod The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A of second OFDM symbol of 4 OFDM symbol, subcarrier A+4, subcarrier (A+8) The subcarrier A of the 4th OFDM symbol of 12,4 OFDM symbol of mod, subcarrier A+4, subcarrier (A+8) mod 12；Wherein, A=0,1,2,3；

Method two：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, the son of second OFDM symbol of 12,4 OFDM symbol of subcarrier (A+8) mod Carrier wave A+6, the subcarrier A of the 3rd OFDM symbol of 4 OFDM symbol, 12,4 OFDM symbol of subcarrier (A+8) mod The subcarrier A+6 of the 4th OFDM symbol；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location： The subcarrier A+6 of first OFDM symbol of 4 OFDM symbol, the subcarrier A of second OFDM symbol of 4 OFDM symbol, The subcarrier A+6 of the 3rd OFDM symbol of 12,4 OFDM symbol of subcarrier (A+8) mod, the 4th of 4 OFDM symbol The subcarrier A of OFDM symbol, subcarrier (A+8) mod 12；Wherein, A=0,1,2,3.

Alternative embodiment 2, LTE system adopts extended cyclic prefix, and Physical Resource Block comprises 12 OFDM symbol in time domain, Multichannel reference signal be 2 tunnels, and the M subcarrier that each road reference signal is mapped in OFDM symbol on specifically include with Lower at least one method：

Method one：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+6, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the 11st OFDM symbol son load Ripple A, subcarrier A+6；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A+3, subcarrier A+5, subcarrier (A+11) mod 12 of the 12, the 8th OFDM symbol of subcarrier (A+9) mod, The subcarrier A+3 of the 11st OFDM symbol, subcarrier (A+9) mod 12；Wherein, A=0,1,2；

Method two：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+6, the subcarrier A+5 of the 8th OFDM symbol, the 12, the 11st OFDM of subcarrier (A+11) mod The subcarrier A+3 of symbol, subcarrier (A+9) mod 12；Multiple reference signals in second tunnel reference signal are mapped to following Time-frequency location：The subcarrier A+3 of the 5th OFDM symbol, the subcarrier A+2 of the 12, the 8th OFDM symbol of subcarrier (A+9) mod, Subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6；Wherein, A=0,1,2；

Method three：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+5, the subcarrier A+8 of the 12, the 8th OFDM symbol of subcarrier (A+9) mod, the 11st OFDM symbol Number subcarrier A, subcarrier (A+9) mod 12；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency Position：The subcarrier A+3 of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+2 of the 8th OFDM symbol, subcarrier (A+11) Mod 12, the subcarrier A+3 of the 11st OFDM symbol, subcarrier A+6；Wherein, A=0,1,2；

Method four：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+6, the subcarrier A+5 of the 8th OFDM symbol, the 12, the 11st OFDM of subcarrier (A+11) mod The subcarrier A of symbol, subcarrier A+6；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location：The The subcarrier A+3 of 5 OFDM symbol, subcarrier A+2, the subcarrier A+8 of the 12, the 8th OFDM symbol of subcarrier (A+9) mod, The subcarrier A+3 of the 11st OFDM symbol, subcarrier (A+9) mod 12；Wherein, A=0,1,2；

Method five：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+3, subcarrier A+6, the subcarrier A+2 of the 12, the 8th OFDM symbol of subcarrier (A+9) mod, son Carrier wave (A+8) mod 12；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location：8th OFDM The subcarrier A+5 of symbol, subcarrier (A+11) mod12, the subcarrier A of the 11st OFDM symbol, subcarrier A+3, subcarrier A+ 6th, subcarrier (A+9) mod 12；Wherein, A=0,1,2；

Method six：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+3, the subcarrier A of the 12, the 11st OFDM symbol of subcarrier (A+9) mod, subcarrier A+3, son Carrier wave (A+9) mod 12；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location：5th OFDM The subcarrier A+6 of symbol, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+5, subcarrier A+8, subcarrier (A+11) mod The subcarrier A+6 of the 12, the 11st OFDM symbol；Wherein, A=0,1,2；

Method seven：Multiple reference signals in first via reference signal are mapped to following time-frequency location：2 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12,2 OFDM symbol The subcarrier A of second OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；By the second tunnel with reference to letter Multiple reference signals in number are mapped to following time-frequency location：The subcarrier A+B of first OFDM symbol of 2 OFDM symbol, Subcarrier A+3+B, subcarrier A+6+B, the son load of second OFDM symbol of 12,2 OFDM symbol of subcarrier (A+9+B) mod Ripple A+B, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12；Wherein, A=0,1,2；B=1,2；

Method eight：Multiple reference signals in first via reference signal are mapped to following time-frequency location：2 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+4, second OFDM of 12,2 OFDM symbol of subcarrier (A+8) mod The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A+B of first OFDM symbol of 2 OFDM symbol, subcarrier A+4+B, subcarrier (A+ 8+B) mod 12, the subcarrier A+B of second OFDM symbol of 2 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；Wherein, A=0,1,2；B=1,2.

Alternative embodiment 3, multichannel reference signal is 4 tunnels, 4 tunnel reference signals is mapped to 2 OFDM of Physical Resource Block On symbol, and specifically include following at least one on the M subcarrier that each road reference signal is mapped in OFDM symbol Method：

Method one：Multiple reference signals in first via reference signal are mapped to first OFDM of two OFDM symbol The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12, the son load of second OFDM symbol of two OFDM symbol Ripple A, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are mapped to two The subcarrier A+2 of first OFDM symbol of OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12, two OFDM symbol The subcarrier A+2 of second OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12；By in the 3rd tunnel reference signal The subcarrier A+1 of first OFDM symbol of multiple reference signals two OFDM symbol of mapping, subcarrier A+5, subcarrier (A+9) Mod 12, the subcarrier A+1 of second OFDM symbol of two OFDM symbol, subcarrier A+5, subcarrier (A+9) mod 12；Will Multiple reference signals in 4th tunnel reference signal be mapped to first OFDM symbol of two OFDM symbol subcarrier A+3, Subcarrier A+7, subcarrier (A+11) mod 12, the subcarrier A+3 of second OFDM symbol of two OFDM symbol, subcarrier A+ 7th, subcarrier (A+11) mod 12；Wherein, A=0,1,2,3；

Method two：Multiple reference signals in first via reference signal are mapped to first OFDM of two OFDM symbol The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12, the son load of second OFDM symbol of two OFDM symbol Ripple A, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are mapped to two The subcarrier A+1 of first OFDM symbol of OFDM symbol, subcarrier A+5, subcarrier (A+9) mod 12, two OFDM symbol The subcarrier A+1 of second OFDM symbol, subcarrier A+5, subcarrier (A+9) mod 12；By in the 3rd tunnel reference signal Multiple reference signals map the subcarrier A+2 of first OFDM symbol of two OFDM symbol, subcarrier A+6, subcarrier (A+ 10) mod 12, the subcarrier A+2 of second OFDM symbol of two OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12；Multiple reference signals in 4th tunnel reference signal are mapped to the subcarrier of first OFDM symbol of two OFDM symbol A+3, subcarrier A+7, subcarrier (A+11) mod 12, the subcarrier A+3 of second OFDM symbol of two OFDM symbol, sub- load Ripple A+7, subcarrier (A+11) mod 12；Wherein, A=0,1,2,3；

Method three：Multiple reference signals in first via reference signal are mapped to first OFDM of two OFDM symbol The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12, the son load of second OFDM symbol of two OFDM symbol Ripple A, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are mapped to two The subcarrier A+2 of first OFDM symbol of OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12, two OFDM symbol The subcarrier A+2 of second OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12；By in the 3rd tunnel reference signal Multiple reference signals map the subcarrier A+1 of first OFDM symbol, the subcarrier A+7 of two OFDM symbol, two OFDM symbols Number the subcarrier A+1 of second OFDM symbol, subcarrier A+7；By the multiple reference signal mappings in the 4th tunnel reference signal To subcarrier A+3, the subcarrier A+9 of first OFDM symbol of two OFDM symbol, second OFDM of two OFDM symbol The subcarrier A+3 of symbol, subcarrier A+9；Wherein, A=0,1,2,3；

Method four：Multiple reference signals in first via reference signal are mapped to first OFDM of two OFDM symbol The subcarrier A of symbol, subcarrier A+6, the A of second OFDM symbol of two OFDM symbol, subcarrier A+6；Second tunnel is joined Examine the subcarrier A+3 of first OFDM symbol, the subcarrier (A+ that the multiple reference signals in signal are mapped to two OFDM symbol 9) mod 12, the subcarrier A+3 of second OFDM symbol of two OFDM symbol, subcarrier (A+9) mod 12；3rd tunnel is joined The multiple reference signals examined in signal map the subcarrier A+2 of first OFDM symbol of two OFDM symbol, subcarrier (A+8) Mod 12, the subcarrier A+2 of second OFDM symbol of two OFDM symbol, subcarrier (A+8) mod 12；By the 4th tunnel reference Multiple reference signals in signal are mapped to the subcarrier A+4 of first OFDM symbol of two OFDM symbol, subcarrier (A+ 10) mod 12, the subcarrier A+4 of second OFDM symbol of two OFDM symbol, subcarrier (A+10) mod 12；Wherein, A= 0,1,2,3,4,5；

Method five：Multiple reference signals in first via reference signal are mapped to first OFDM of two OFDM symbol The subcarrier A of symbol, subcarrier A+6, the A of second OFDM symbol of two OFDM symbol, subcarrier A+6；3rd tunnel is joined The multiple reference signals examined in signal map the subcarrier A+1 of first OFDM symbol of two OFDM symbol, subcarrier (A+7) Mod 12, the subcarrier A+1 of second OFDM symbol of two OFDM symbol, subcarrier (A+7) mod 12；By the second tunnel reference Multiple reference signals in signal are mapped to the subcarrier A+2 of first OFDM symbol of two OFDM symbol, subcarrier (A+8) Mod 12, the subcarrier A+2 of second OFDM symbol of two OFDM symbol, subcarrier (A+8) mod 12；By the 4th tunnel reference Multiple reference signals in signal are mapped to the subcarrier A+3 of first OFDM symbol of two OFDM symbol, subcarrier (A+9) Mod 12, the subcarrier A+3 of second OFDM symbol of two OFDM symbol, subcarrier (A+9) mod 12；Wherein, A=0,1, 2,3,4,5.

Alternative embodiment 4, multichannel reference signal is 4 tunnels, 4 tunnel reference signals is mapped to 4 OFDM of Physical Resource Block On symbol, and specifically include following at least one on the M subcarrier that each road reference signal is mapped in OFDM symbol Method：

Method one：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+4, the 3rd OFDM of 12,4 OFDM symbol of subcarrier (A+8) mod The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A of second OFDM symbol of 4 OFDM symbol, subcarrier A+4, subcarrier (A+8) The subcarrier A of the 4th OFDM symbol of 12,4 OFDM symbol of mod, subcarrier A+4, subcarrier (A+8) mod 12；By Multiple reference signals in three tunnel reference signals are mapped to following time-frequency location：First OFDM symbol of 4 OFDM symbol Subcarrier A+B, subcarrier A+4+B, the subcarrier of the 3rd OFDM symbol of 12,4 OFDM symbol of subcarrier (A+8+B) mod A+B, subcarrier A+4+B, subcarrier (A+8+B) mod 12；By the multiple reference signals in the 4th tunnel reference signal be mapped to Lower time-frequency location：The subcarrier A+B of second OFDM symbol of 4 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) The subcarrier A+B of the 4th OFDM symbol of 12,4 OFDM symbol of mod, subcarrier A+4+B, subcarrier (A+8+B) mod 12；Wherein, A=0,1,2,3；B=1,2；

Method two：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+4, the 3rd OFDM of 12,4 OFDM symbol of subcarrier (A+8) mod The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A+B of second OFDM symbol of 4 OFDM symbol, subcarrier A+4+B, subcarrier (A+ 8+B) mod 12, the subcarrier A+B of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location：First of 4 OFDM symbol The subcarrier A+B of OFDM symbol, subcarrier A+4+B, the 3rd OFDM symbol of 12,4 OFDM symbol of subcarrier (A+8+B) mod Number subcarrier A+B, subcarrier A+4+B, subcarrier (A+8+B) mod 12；By the multiple reference letters in the 4th tunnel reference signal Number it is mapped to following time-frequency location：The subcarrier A of second OFDM symbol of 4 OFDM symbol, subcarrier A+4, subcarrier (A+ 8) mod 12, the subcarrier A of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；Its In, A=0,1,2,3；B=1,2；

Method three：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+4, the 3rd OFDM of 12,4 OFDM symbol of subcarrier (A+8) mod The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A of second OFDM symbol of 4 OFDM symbol, subcarrier A+4, subcarrier (A+8) The subcarrier A of the 4th OFDM symbol of 12,4 OFDM symbol of mod, subcarrier A+4, subcarrier (A+8) mod 12；By Multiple reference signals in three tunnel reference signals are mapped to following time-frequency location：First OFDM symbol of 4 OFDM symbol Subcarrier A+1, subcarrier A+7, the subcarrier A+1 of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+7；By the 4th tunnel Multiple reference signals in reference signal are mapped to following time-frequency location：The son load of second OFDM symbol of 4 OFDM symbol Ripple A+1, subcarrier A+7, the subcarrier A+1 of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+7；Wherein, A=0, 1,2,3；

Method four：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+4, the 3rd OFDM of 12,4 OFDM symbol of subcarrier (A+8) mod The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in second tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A+2 of second OFDM symbol of 4 OFDM symbol, subcarrier A+6, subcarrier (A+ 10) mod 12, the subcarrier A+2 of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location：First OFDM of 4 OFDM symbol The subcarrier A+1 of symbol, subcarrier A+7, the subcarrier A+1 of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+7；Will Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location：Second OFDM symbol of 4 OFDM symbol Subcarrier A+3, subcarrier A+9, the subcarrier A+3 of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+9；Wherein, A =0,1,2；

Method five：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+6, the subcarrier A of the 3rd OFDM symbol of 4 OFDM symbol, sub- load Ripple A+6；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location：Second of 4 OFDM symbol The subcarrier A of OFDM symbol, subcarrier A+6, the subcarrier A of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+6；Will Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location：First OFDM symbol of 4 OFDM symbol Subcarrier A+3, subcarrier A+9, the subcarrier A+3 of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+9；By the 4th Multiple reference signals in the reference signal of road are mapped to following time-frequency location：The son of second OFDM symbol of 4 OFDM symbol Carrier wave A+3, subcarrier A+9, the subcarrier A+3 of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+9；Wherein, A=0, 1,2,3,4,5；

Method six：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+6, the subcarrier A of the 3rd OFDM symbol of 4 OFDM symbol, sub- load Ripple A+6；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location：Second of 4 OFDM symbol The subcarrier A+3 of OFDM symbol, subcarrier A+9, the subcarrier A+3 of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+ 9；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location：First OFDM of 4 OFDM symbol The subcarrier A+3 of symbol, subcarrier A+9, the subcarrier A+3 of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+9；Will Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location：Second OFDM symbol of 4 OFDM symbol Subcarrier A, subcarrier A+6, the subcarrier A of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+6；Wherein, A=0, 1,2,3,4,5.

Alternative embodiment 5, LTE system adopts extended cyclic prefix, and Physical Resource Block comprises 12 OFDM symbol in time domain, Multichannel reference signal is 4 tunnels, and 4 tunnel reference signals are mapped in 3 OFDM symbol of Physical Resource Block, and each road is joined Examine and following at least one method is specifically included on the M subcarrier that signal is mapped in OFDM symbol：

Method one：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+6, the subcarrier A+2 of the 8th OFDM symbol, subcarrier A+8, the 11st OFDM symbol son load Ripple A, subcarrier A+6；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A+3, subcarrier A+5, subcarrier (A+11) mod 12 of the 12, the 8th OFDM symbol of subcarrier (A+9) mod, The subcarrier A+3 of the 11st OFDM symbol, subcarrier (A+9) mod 12；By the multiple reference signals in the 3rd tunnel reference signal It is mapped to following time-frequency location：The subcarrier A+1 of the 5th OFDM symbol, subcarrier A+7, the subcarrier A+ of the 8th OFDM symbol 3rd, subcarrier A+9, the subcarrier A+1 of the 11st OFDM symbol, subcarrier A+7；By the multiple references in the 4th tunnel reference signal Signal is mapped to following time-frequency location：The subcarrier A+4 of the 5th OFDM symbol, the 12, the 8th OFDM of subcarrier (A+10) mod The subcarrier A+6 of symbol, subcarrier A, the subcarrier A+4 of the 11st OFDM symbol, subcarrier (A+10) mod 12；Wherein, A= 0,1；

Method two：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+6, the subcarrier A+5 of the 8th OFDM symbol, the 12, the 11st OFDM of subcarrier (A+11) mod The subcarrier A+3 of symbol, subcarrier (A+9) mod 12；Multiple reference signals in second tunnel reference signal are mapped to following Time-frequency location：The subcarrier A+3 of the 5th OFDM symbol, the subcarrier A+2 of the 12, the 8th OFDM symbol of subcarrier (A+9) mod, Subcarrier A+8, the subcarrier A of the 11st OFDM symbol, subcarrier A+6；By the multiple reference signals in the 3rd tunnel reference signal It is mapped to following time-frequency location：The subcarrier A+1 of the 5th OFDM symbol, subcarrier A+7, the subcarrier A+ of the 8th OFDM symbol 6th, subcarrier A, the subcarrier A+4 of the 11st OFDM symbol, subcarrier (A+10) mod 12；Will be many in the 4th tunnel reference signal Individual reference signal is mapped to following time-frequency location：The subcarrier A+4 of the 5th OFDM symbol, subcarrier (A+10) mod the 12, the 8th The subcarrier A+3 of individual OFDM symbol, subcarrier A+9, the subcarrier A+1 of the 11st OFDM symbol, subcarrier A+7；Wherein, A= 0,1；

Method three：Multiple reference signals in first via reference signal are mapped to following time-frequency location：5th OFDM symbol Number subcarrier A, subcarrier A+5, the subcarrier A+8 of the 12, the 8th OFDM symbol of subcarrier (A+9) mod, the 11st OFDM symbol Number subcarrier A, subcarrier (A+9) mod 12；Multiple reference signals in second tunnel reference signal are mapped to following time-frequency Position：The subcarrier A+3 of the 5th OFDM symbol, subcarrier A+6, the subcarrier A+2 of the 8th OFDM symbol, subcarrier (A+11) Mod 12, the subcarrier A+3 of the 11st OFDM symbol, subcarrier A+6；Multiple reference signals in 3rd tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A+1 of the 5th OFDM symbol, subcarrier (A+10) mod the 12, the 8th OFDM symbol Subcarrier A+4, subcarrier A+7, the subcarrier A+1 of the 11st OFDM symbol, subcarrier (A+10) mod 12；By the 4th tunnel reference Multiple reference signals in signal are mapped to following time-frequency location：The subcarrier A+4 of the 5th OFDM symbol, subcarrier A+7, the The subcarrier A+2 of 8 OFDM symbol, subcarrier A+4, the subcarrier A+ of the 12, the 11st OFDM symbol of subcarrier (A+10) mod 7；Wherein, A=0,1.

Alternative embodiment 6, in the method for above-mentioned alternative embodiment 3,4,5, the reference signal needing mapping is 3 tunnels, The reference signal of mapping on the time-frequency location of the arbitrary road reference signal in 4 tunnel reference signals of mapping is replaced with data.

Alternative embodiment 7, multichannel reference signal is 8 tunnels, 8 tunnel reference signals is mapped to 4 OFDM of Physical Resource Block On symbol, and specifically include following at least one on the M subcarrier that each road reference signal is mapped in OFDM symbol Method：

Method one：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；Will be many in the second tunnel reference signal Individual reference signal is mapped to following time-frequency location：The subcarrier A of second OFDM symbol of 4 OFDM symbol, subcarrier A+4, Subcarrier (A+8) mod 12；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location：4 OFDM The subcarrier A+B of the 3rd OFDM symbol of symbol, subcarrier A+4+B, subcarrier (A+8+B) mod12；By the 4th tunnel with reference to letter Multiple reference signals in number are mapped to following time-frequency location：The subcarrier A+B of the 4th OFDM symbol of 4 OFDM symbol, Subcarrier A+4+B, subcarrier (A+8+B) mod 12；When multiple reference signals in 5th tunnel reference signal are mapped to following Frequency position：The subcarrier A+B of first OFDM symbol of 4 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location：Second OFDM of 4 OFDM symbol The subcarrier A+B of symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；By the multiple references in the 7th tunnel reference signal Signal is mapped to following time-frequency location：The subcarrier A of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+4, subcarrier (A+8)mod 12；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of the 4th OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；Wherein, A=0；B=1,2；

Method two：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；Will be many in the second tunnel reference signal Individual reference signal is mapped to following time-frequency location：The subcarrier A+B of second OFDM symbol of 4 OFDM symbol, subcarrier A+4 + B, subcarrier (A+8+B) mod 12；Multiple reference signals in 3rd tunnel reference signal are mapped to following time-frequency location：4 The subcarrier A+B of the 3rd OFDM symbol of OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；By the 4th tunnel Multiple reference signals in reference signal are mapped to following time-frequency location：The son load of the 4th OFDM symbol of 4 OFDM symbol Ripple A, subcarrier A+4, subcarrier (A+8) mod 12；When multiple reference signals in 5th tunnel reference signal are mapped to following Frequency position：The subcarrier A+B of first OFDM symbol of 4 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；Multiple reference signals in 6th tunnel reference signal are mapped to following time-frequency location：Second OFDM of 4 OFDM symbol The subcarrier A of symbol, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in 7th tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location：The 4th of 4 OFDM symbol The subcarrier A+B of OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；Wherein, A=0；B=1,2；

Method three：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；By the second tunnel reference Multiple reference signals in signal are mapped to following time-frequency location：The subcarrier A of second OFDM symbol of 4 OFDM symbol, Subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；Multiple reference signals in 3rd tunnel reference signal are mapped to Following time-frequency location：The subcarrier A+B of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, Subcarrier (A+9+B) mod 12；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency location：4 The subcarrier A+B of the 4th OFDM symbol of OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location：First OFDM of 4 OFDM symbol The subcarrier A+B of symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12；By the 6th tunnel reference signal In multiple reference signals be mapped to following time-frequency location：The subcarrier A+B of second OFDM symbol of 4 OFDM symbol, son Carrier wave A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12；Multiple reference signals in 7th tunnel reference signal are reflected It is mapped to following time-frequency location：The subcarrier A of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+3, subcarrier A+6, son Carrier wave (A+9) mod 12；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location：4 OFDM symbols Number the subcarrier A of the 4th OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；Wherein, A=0；B =1,2；

Method four：Multiple reference signals in first via reference signal are mapped to following time-frequency location：4 OFDM symbol The subcarrier A of first OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；By the second tunnel reference Multiple reference signals in signal are mapped to following time-frequency location：The subcarrier A+ of second OFDM symbol of 4 OFDM symbol B, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12；By the multiple reference letters in the 3rd tunnel reference signal Number it is mapped to following time-frequency location：The subcarrier A+B of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+3+B, sub- load Ripple A+6+B, subcarrier (A+9+B) mod 12；Multiple reference signals in 4th tunnel reference signal are mapped to following time-frequency position Put：The subcarrier A of the 4th OFDM symbol of 4 OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；Multiple reference signals in 5th tunnel reference signal are mapped to following time-frequency location：First OFDM of 4 OFDM symbol The subcarrier A+B of symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12；By the 6th tunnel reference signal In multiple reference signals be mapped to following time-frequency location：The subcarrier A of second OFDM symbol of 4 OFDM symbol, sub- load Ripple A+3, subcarrier A+6, subcarrier (A+9) mod 12；Multiple reference signals in 7th tunnel reference signal are mapped to following Time-frequency location：The subcarrier A of the 3rd OFDM symbol of 4 OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+ 9)mod 12；Multiple reference signals in 8th tunnel reference signal are mapped to following time-frequency location：The 4th of 4 OFDM symbol The subcarrier A+B of individual OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12；Wherein, A=0；B =1,2.

Alternative embodiment 8, multichannel reference signal is 8 tunnels, 8 tunnel reference signals is mapped to 2 OFDM of Physical Resource Block On symbol, and specifically include on the M subcarrier that each road reference signal is mapped in OFDM symbol：By first via reference Multiple reference signals in signal are mapped to the subcarrier A of first OFDM symbol of two OFDM symbol, subcarrier A+4, son Carrier wave (A+8) mod 12；Multiple reference signals in second tunnel reference signal are mapped to second of two OFDM symbol The subcarrier A+2 of OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12；By the multiple references in the 3rd tunnel reference signal Signal is mapped to the subcarrier A+1 of first OFDM symbol of two OFDM symbol, subcarrier A+5, subcarrier (A+9) mod 12；By second OFDM symbol of multiple reference signals two OFDM symbol of mapping in the 4th tunnel reference signal to subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12；Multiple reference signals in 5th tunnel reference signal are mapped to two The subcarrier A+2 of first OFDM symbol of OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12；By the 6th tunnel reference Multiple reference signals in signal are mapped to the subcarrier A of second OFDM symbol of two OFDM symbol, subcarrier A+4, son Carrier wave (A+8) mod 12；Multiple reference signals in 7th tunnel reference signal are mapped to first of two OFDM symbol The subcarrier A+3 of OFDM symbol, subcarrier A+7, subcarrier (A+11) mod12；By the multiple references in the 8th tunnel reference signal Signal map second OFDM symbol of two OFDM symbol to subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12；Wherein, A=0.

Alternative embodiment 9, LTE system adopts extended cyclic prefix, and Physical Resource Block comprises 12 OFDM symbol in time domain, Multichannel reference signal be 8 tunnels, and the M subcarrier that each road reference signal is mapped in OFDM symbol on specifically include with Lower at least one method：

Method one：First via reference signal is mapped to the subcarrier 0 of the 5th OFDM symbol, subcarrier 4, subcarrier 8； Second tunnel reference signal is mapped to the subcarrier 2 of the 12nd OFDM symbol, subcarrier 6, subcarrier 10；By the 3rd tunnel with reference to letter Number it is mapped to the subcarrier 1 of the 5th OFDM symbol, subcarrier 5, subcarrier 9；4th tunnel reference signal is mapped to the 12nd The subcarrier 3 of OFDM symbol, subcarrier 7, subcarrier 11；5th tunnel reference signal is mapped to the son load of the 5th OFDM symbol Ripple 2, subcarrier 6, subcarrier 10；6th tunnel reference signal is mapped to the subcarrier 0 of the 12nd OFDM symbol, subcarrier 4, son Carrier wave 8；7th tunnel reference signal is mapped to the subcarrier 3 of the 5th OFDM symbol, subcarrier 7, subcarrier 11；By the 8th tunnel Reference signal is mapped to the subcarrier 1 of the 12nd OFDM symbol, subcarrier 5, subcarrier 9；

Method two：First via reference signal is mapped to the subcarrier 0 of the 5th OFDM symbol, the son of the 8th OFDM symbol Carrier wave 5, the subcarrier 9 of the 11st OFDM symbol；By the second tunnel reference signal be mapped to the 5th OFDM symbol subcarrier 3, The subcarrier 8 of 8 OFDM symbol, the subcarrier 0 of the 11st OFDM symbol；3rd tunnel reference signal is mapped to the 5th OFDM The subcarrier 1 of symbol, the subcarrier 6 of the 8th OFDM symbol, the subcarrier 10 of the 11st OFDM symbol；By the 4th tunnel with reference to letter Number it is mapped to the subcarrier 4 of the 5th OFDM symbol, the subcarrier 10 of the 8th OFDM symbol, the subcarrier of the 11st OFDM symbol 1；By the 5th tunnel reference signal be mapped to the subcarrier 6 of the 5th OFDM symbol, the subcarrier 11 of the 8th OFDM symbol, the 11st The subcarrier 3 of OFDM symbol；6th tunnel reference signal is mapped to the subcarrier 10 of the 5th OFDM symbol, the 8th OFDM symbol Subcarrier 2, the subcarrier 6 of the 11st OFDM symbol；7th tunnel reference signal is mapped to the subcarrier of the 5th OFDM symbol 7th, the subcarrier 0 of the 8th OFDM symbol, the subcarrier 4 of the 11st OFDM symbol；8th tunnel reference signal is mapped to the 5th The subcarrier 10 of OFDM symbol, the subcarrier 3 of the 8th OFDM symbol, the subcarrier 7 of the 11st OFDM symbol.

Alternative embodiment 10, in the method for above-mentioned alternative embodiment 7 to 9, the reference signal if necessary to mapping is 5 Road, then replace with number by the reference signal of mapping on the time-frequency location of any 3 tunnel reference signals in 8 tunnel reference signals of mapping According to；If necessary to mapping reference signal be 6 tunnels, then will mapping 8 tunnel reference signals in any 2 tunnel reference signals when On frequency position, the reference signal of mapping replaces with data；Reference signal if necessary to mapping is 7 tunnels, then by 8 tunnel ginsengs of mapping The reference signal examining mapping on the time-frequency location of the arbitrary road reference signal in signal replaces with data.

Alternative embodiment 11, in the method for above-mentioned alternative embodiment 7 to 9, the reference signal if necessary to mapping is 5 Road, then replace with the 1st tunnel by the reference signal on the time-frequency location of any 3 tunnel reference signals in 8 tunnel reference signals of mapping The reference signal on any three tunnels in the 4th tunnel；Reference signal if necessary to mapping is 6 tunnels, then by 8 tunnel reference signals of mapping In the time-frequency location of any 2 tunnel reference signals on reference signal replace with any 2 tunnels in above-mentioned any three kinds reference letter Number；Reference signal if necessary to mapping is 7 tunnels, then by the time-frequency of any 1 tunnel reference signal in 8 tunnel reference signals of mapping Reference signal on position replaces with the reference signal on any 1 tunnel in above-mentioned any two kinds.

Alternative embodiment 12, LTE system adopts conventional cyclic prefix, and Physical Resource Block comprises 14 OFDM symbols in time domain Number, one or more reference signal is mapped on 4 orthogonal frequency division multiplex OFDM symbols of Physical Resource Block, is mapped with reference 4 OFDM symbol of signal are：6th, 7,13,14 OFDM symbol in 14 OFDM symbol；Or in 14 OFDM symbol 5th, 8,9,12 OFDM symbol；Or the 4th, 7,10,13 OFDM symbol in 14 OFDM symbol；Or in 14 OFDM symbol 4th, 7,11,14 OFDM symbol；Or the 4th, 7,10,14 OFDM symbol in 14 OFDM symbol；Or 14 OFDM symbols 4th, 6,13,14 OFDM symbol in number.

Alternative embodiment 13, LTE system adopts extended cyclic prefix, and Physical Resource Block comprises 12 OFDM symbols in time domain Number, one or more reference signal is mapped on 4 orthogonal frequency division multiplex OFDM symbols of Physical Resource Block, is mapped with reference 4 OFDM symbol of signal are：5th, 6,9,11 OFDM symbol in 12 OFDM symbol；Or the 5th in 12 OFDM symbol, 6th, 11,12 OFDM symbol；Or the 4th, 7,8,10 OFDM symbol in 12 OFDM symbol；Or in 12 OFDM symbol 5th, 6,8,9 OFDM symbol.

Alternative embodiment 14, in the method for above-mentioned alternative embodiment 12 or 13, first OFDM symbol, second The time-domain position coordinate ascending arrangement or descending of OFDM symbol, the 3rd OFDM symbol and the 4th OFDM symbol Arrangement.

Alternative embodiment 15, LTE system adopts conventional cyclic prefix, and Physical Resource Block comprises 14 OFDM symbols in time domain Number, one or more reference signal is mapped on 2 orthogonal frequency division multiplex OFDM symbols of Physical Resource Block, is mapped with reference 2 OFDM symbol of signal are：4th OFDM symbol and the 14th OFDM symbol in 14 OFDM symbol；Or 14 OFDM 4th OFDM symbol and the 13rd OFDM symbol in symbol；Or the 6th OFDM symbol and the 14th in 14 OFDM symbol OFDM symbol；Or the 6th OFDM symbol and the 13rd OFDM symbol in 14 OFDM symbol；Or in 14 OFDM symbol 6 OFDM symbol and the 11st OFDM symbol；Or the 10th OFDM symbol and the 11st OFDM symbol in 14 OFDM symbol.

Alternative embodiment 16, LTE system adopts extended cyclic prefix, and Physical Resource Block comprises 12 OFDM symbols in time domain Number, one or more reference signal is mapped on 2 orthogonal frequency division multiplex OFDM symbols of Physical Resource Block, is mapped with reference 2 OFDM symbol of signal are：5th OFDM symbol and the 12nd OFDM symbol in 12 OFDM symbol；Or 12 OFDM 5th OFDM symbol and the 9th OFDM symbol in symbol；Or the 5th OFDM symbol and the 11st in 12 OFDM symbol OFDM symbol；Or the 8th OFDM symbol and the 9th OFDM symbol in 12 OFDM symbol.

Alternative embodiment 17, in the method for above-mentioned alternative embodiment 1 to 16, reference signal refers to the reference based on layer Signal.

Method shown in Fig. 4 is described in detail to example 4 with reference to example 1.

It should be noted that herein, reference signal described in the first via corresponds to reference signal #0 of layer 1, described in the second tunnel Reference signal corresponds to reference signal #1 of layer 2, and reference signal described in the 3rd tunnel corresponds to reference signal #2 of floor 3, the 4th tunnel Described reference signal corresponds to reference signal #3 of layer 4, and the 5th tunnel reference signal corresponds to reference signal #4 of floor 5, the 6th tunnel Reference signal corresponds to reference signal #5 of layer 6, and the 7th tunnel reference signal corresponds to reference signal #6 of floor 7, the 8th tunnel reference Signal corresponds to reference signal #7 of layer 8.Corresponding 12 sub-carrier indices of Physical Resource Block are subcarrier #0, subcarrier #1, Subcarrier #2, subcarrier #3, subcarrier #4, subcarrier #5, subcarrier #6, subcarrier #7, subcarrier #8, subcarrier #9, sub- load Ripple #10, subcarrier #11.

And, in Fig. 5 to Fig. 8, in figure label T1 corresponds to reference signal #0 of layer 1, T2 corresponds to the reference letter of layer 2 Number #1, T3 correspond to reference signal #2 of layer 3, and T4 corresponds to reference signal #3 of layer 4, and T5 corresponds to reference signal #4 of layer 5, T6 corresponds to reference signal #5 of layer 6, and T7 corresponds to reference signal #6 of layer 7, and T8 corresponds to reference signal #7 of layer 8.

In Fig. 5 to Fig. 8, corresponding 12 sub-carrier indices of in figure Physical Resource Block are subcarrier #0, subcarrier #1, son Carrier wave #2, subcarrier #3, subcarrier #4, subcarrier #5, subcarrier #6, subcarrier #7, subcarrier #8, subcarrier #9, subcarrier # 10th, subcarrier #11.

Example 1

This example describes to transmit the mapping of the Physical Resource Block of one layer of reference signal in a subframe.

When Fig. 5 a is that subframe adopts conventional cyclic prefix, situation schematic diagram in Physical Resource Block for the reference signal, As shown in Figure 5 a, including reference signal #0 of layer 1, and this Physical Resource Block comprises 12 subcarriers in frequency domain, comprises in time domain 14 OFDM symbol, and, A=0.

Reference signal #0 of layer 1 is mapped to the following time-frequency location of above-mentioned Physical Resource Block：4th OFDM symbol Subcarrier #0, subcarrier #4, subcarrier #8, the subcarrier #2 of the 7th OFDM symbol, subcarrier #6, subcarrier #10, the 10th The subcarrier #0 of OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier #2 of the 13rd OFDM symbol, subcarrier #6, sub- load Ripple #10.

When Fig. 5 b is that subframe adopts extended cyclic prefix, situation schematic diagram in Physical Resource Block for the reference signal, As shown in Figure 5 b, including reference signal #0 of layer 1, and this Physical Resource Block comprises 12 subcarriers in frequency domain, comprises in time domain 12 OFDM symbol.

Reference signal #0 is mapped to the following time-frequency location of above-mentioned Physical Resource Block：The subcarrier # of the 5th OFDM symbol 0th, subcarrier #3, subcarrier #6, subcarrier #9, the subcarrier #2 of the 8th OFDM symbol, subcarrier #5, subcarrier #8, sub- load Ripple #11, the subcarrier #0 of the 11st OFDM symbol, subcarrier #3, subcarrier #6, subcarrier #9.

Example 1 gives the pattern schematic diagram of one layer of reference signal, has filled up the blank of prior art, and, based on this The mapping method of the reference signal of pattern, it is possible to increase the overall performance of system.

Implement 2

This example describes to transmit the mapping of the Physical Resource Block of two-layer reference signal in a subframe.

When Fig. 6 a and Fig. 6 b is that subframe adopts conventional cyclic prefix, situation in Physical Resource Block for the reference signal shows It is intended to, as shown in figures 6 a and 6b, including reference signal #1 of reference signal #0 of layer 1, layer 2, and this Physical Resource Block is in frequency Domain comprises 12 subcarriers, comprises 14 OFDM symbol in time domain.

With reference to Fig. 6 a, the Physical Resource Block mapping of reference signal #0, reference signal #1 is illustrated, reference signal # 0th, reference signal #1 is mapped in the 4th, 7,10,13 OFDM symbol in 14 OFDM symbol of Physical Resource Block, i.e. above First OFDM symbol correspond to the 4th OFDM symbol, second OFDM symbol corresponds to the 7th OFDM symbol, the 3rd OFDM symbol corresponds to the 10th OFDM symbol, and the 4th OFDM symbol corresponds to the 13rd OFDM symbol, as shown in Figure 6 a, bag Include following process：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier #0 of the 10th OFDM symbol, Subcarrier #4, subcarrier #8；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 7th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier #0 of the 13rd OFDM symbol, subcarrier # 4th, subcarrier #8；

With reference to Fig. 6 b, the Physical Resource Block mapping of reference signal #0, reference signal #1 is illustrated, by this reference Signal #0, reference signal #1 are mapped to the 4th OFDM symbol and the 14th OFDM symbol in 14 OFDM symbol of Physical Resource Block Different carrier on number, as shown in Figure 6 b, is processed including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier #0 of the 14th OFDM symbol, sub- load Ripple #4, subcarrier #8；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 4th OFDM symbol, subcarrier #6, subcarrier #10, the subcarrier #2 of the 14th OFDM symbol, sub- load Ripple #6, subcarrier #10；

When Fig. 6 c to Fig. 6 g is that subframe adopts conventional cyclic prefix, situation in Physical Resource Block for the reference signal shows It is intended to, shown in Fig. 6 c to Fig. 6 g, including reference signal #1 of reference signal #0 of layer 1, layer 2, and this Physical Resource Block is in frequency domain Comprise 12 subcarriers, comprise 12 OFDM symbol in time domain.

With reference to Fig. 6 c, the Physical Resource Block mapping of reference signal #0, reference signal #1 is illustrated, as Fig. 6 c institute Show, process including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 5th OFDM symbol, subcarrier #6, the subcarrier #2 of the 8th OFDM symbol, subcarrier #8, the 11st The subcarrier #0 of OFDM symbol, subcarrier #6；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #3 of the 5th OFDM symbol, subcarrier #9, the subcarrier #5 of the 8th OFDM symbol, subcarrier #11, the 11st The subcarrier #0 of OFDM symbol, subcarrier #6；

With reference to Fig. 6 d, the Physical Resource Block mapping of reference signal #0, reference signal #1 is illustrated, as Fig. 6 d institute Show, process including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 5th OFDM symbol, subcarrier #6, the subcarrier #5 of the 8th OFDM symbol, subcarrier #11, the 11st The sub- subcarrier #3 of OFDM symbol, subcarrier #9；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #3 of the 5th OFDM symbol, subcarrier #9, the subcarrier #2 of the 8th OFDM symbol, subcarrier #8, the 1st The subcarrier #0 of OFDM symbol, subcarrier #6；

With reference to Fig. 6 e, the Physical Resource Block mapping of reference signal #0, reference signal #1 is illustrated, as Fig. 6 e institute Show, process including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 5th OFDM symbol, subcarrier #9, the subcarrier #5 of the 8th OFDM symbol, subcarrier #8, the 11st The subcarrier #0 of OFDM symbol, subcarrier #9；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #3 of the 5th OFDM symbol, subcarrier #6, the subcarrier #2 of the 8th OFDM symbol, subcarrier #11, the 11st The subcarrier #3 of OFDM symbol, subcarrier #6；

With reference to Fig. 6 f, the Physical Resource Block mapping of reference signal #0, reference signal #1 is illustrated, as Fig. 6 f institute Show, process including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 5th OFDM symbol, subcarrier #3, subcarrier #6, subcarrier #9, the son load of the 11st OFDM symbol Ripple #0, subcarrier #3, subcarrier #6, subcarrier #9；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 5th OFDM symbol, subcarrier #5, subcarrier #8, subcarrier #11, the son load of the 11st OFDM symbol Ripple #2, subcarrier #5, subcarrier #8, subcarrier #11；

With reference to Fig. 6 g, the Physical Resource Block mapping of reference signal #0, reference signal #1 is illustrated, as Fig. 6 g institute Show, process including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 5th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier #0 of the 11st OFDM symbol, subcarrier # 4th, subcarrier #8；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 5th OFDM symbol, subcarrier #6, subcarrier #10, the subcarrier #2 of the 11st OFDM symbol, sub- load Ripple #6, subcarrier #10；

Example 2 gives the pattern schematic diagram of two-layer reference signal, has filled up the blank of prior art, and, based on this The mapping method of the reference signal of pattern, it is possible to increase the overall performance of system.

Example 3

This example describes to transmit the mapping of the Physical Resource Block of four layers of reference signal in a subframe.Fig. 7 a and Fig. 7 b is When subframe adopts conventional cyclic prefix, situation schematic diagram in Physical Resource Block for the reference signal, as Fig. 7 a and Fig. 7 b institute Show, including reference signal #0 of layer 1, reference signal #1 of layer 2, reference signal #2 of layer 3, layer 4 reference signal #3, and this thing Reason Resource Block comprises 12 subcarriers in frequency domain, comprises 14 OFDM symbol in time domain.

With reference to Fig. 7 a to reference signal #0, reference signal #1, reference signal #2, reference signal #3 Physical Resource Block Mapping illustrates, and reference signal #0, reference signal #1, reference signal #2, reference signal #3 are mapped to the 14 of Physical Resource Block In 4th, 7,10,13 OFDM symbol in individual OFDM symbol, i.e. first OFDM symbol above corresponds to the 4th OFDM symbol, second OFDM symbol corresponds to the 7th OFDM symbol, and the 3rd OFDM symbol corresponds to the 10th OFDM symbol Number, the 4th OFDM symbol corresponds to the 13rd OFDM symbol, as shown in Figure 7a, processes including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier #0 of the 10th OFDM symbol, son Carrier wave #4, subcarrier #8；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #2 of the 4th OFDM symbol, subcarrier #6, subcarrier #10, the subcarrier #2 of the 10th OFDM symbol, Subcarrier #6, subcarrier #10；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 7th OFDM symbol, subcarrier #6, subcarrier #10, the subcarrier #2 of the 13rd OFDM symbol, sub- load Ripple #6, subcarrier #10；

With reference to Fig. 7 b to reference signal #0, reference signal #1, reference signal #2, reference signal #3 Physical Resource Block Mapping illustrates, and reference signal #0, reference signal #1, reference signal #2, reference signal #3 are mapped to the 14 of Physical Resource Block In 4th, 7,10,13 OFDM symbol in individual OFDM symbol, i.e. first OFDM symbol above corresponds to the 4th OFDM Symbol, second OFDM symbol corresponds to the 7th OFDM symbol, and the 3rd OFDM symbol corresponds to the 10th OFDM symbol, the Four OFDM symbol correspond to the 13rd OFDM symbol, as shown in Figure 7b, process including following：

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 7th OFDM symbol, subcarrier #6, subcarrier #10, the subcarrier #2 of the 13rd OFDM symbol, sub- load Ripple #6, subcarrier #10；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 7th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier #0 of the 13rd OFDM symbol, subcarrier # 4th, subcarrier #8；

With reference to Fig. 7 c to reference signal #0, reference signal #1, reference signal #2, reference signal #3 Physical Resource Block Mapping illustrates, and this reference signal #0, reference signal #1, reference signal #2, reference signal #3 are mapped to Physical Resource Block 14 OFDM symbol in different carrier in the 4th OFDM symbol and the 14th OFDM symbol, as shown in Figure 7 c, including with Lower process：

Reference signal described in the first via (that is, reference signal #0) is mapped to the son load of above-mentioned Physical Resource Block (A=0) Ripple #0, subcarrier #4, subcarrier #8；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the subcarrier #2 of above-mentioned Physical Resource Block, son Carrier wave #6, subcarrier #10；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the subcarrier #1 of above-mentioned Physical Resource Block, son Carrier wave #5, subcarrier #9；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the subcarrier #3 of above-mentioned Physical Resource Block, son Carrier wave #7, subcarrier #11；

With reference to Fig. 7 d to reference signal #0, reference signal #1, reference signal #2, reference signal #3 Physical Resource Block Mapping illustrates, and reference signal #0, reference signal #1, reference signal #2, reference signal #3 are mapped to the 14 of Physical Resource Block In 4th, 7,10,13 OFDM symbol in individual OFDM symbol, i.e. first OFDM symbol above corresponds to the 4th OFDM Symbol, second OFDM symbol corresponds to the 7th OFDM symbol, and the 3rd OFDM symbol corresponds to the 10th OFDM symbol, the Four OFDM symbol correspond to the 13rd OFDM symbol, as shown in figure 7d, process including following：

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #1 of the 4th OFDM symbol, subcarrier #7, the subcarrier #1 of the 10th OFDM symbol, subcarrier #7；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #3 of the 7th OFDM symbol, subcarrier #9, the subcarrier #3 of the 13rd OFDM symbol, subcarrier #9；

When Fig. 7 e to Fig. 7 h is that subframe adopts extended cyclic prefix, situation in Physical Resource Block for the reference signal shows It is intended to, as shown in Fig. 7 e to Fig. 7 h, including reference signal #0 of layer 1, reference signal #1 of layer 2, reference signal #2 of layer 3, layer 4 Reference signal #3, and this Physical Resource Block comprises 12 subcarriers in frequency domain, comprises 12 OFDM symbol in time domain.

With reference to Fig. 7 e to reference signal #0, reference signal #1, reference signal #2, reference signal #3 Physical Resource Block Mapping illustrates, and as shown in figure 7e, processes including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #0 of the 5th OFDM symbol, subcarrier #6, the subcarrier #2 of the 8th OFDM symbol, subcarrier #8, the The subcarrier #0 of 11 OFDM symbol, subcarrier #6；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #3 of the 5th OFDM symbol, subcarrier #9, the subcarrier #5 of the 8th OFDM symbol, subcarrier #11, the 11st The subcarrier #3 of OFDM symbol, subcarrier #9；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #1 of the 5th OFDM symbol, subcarrier #7, the subcarrier #3 of the 8th OFDM symbol, subcarrier #9, the 11st The subcarrier #1 of individual OFDM symbol, subcarrier #7；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #4 of the 5th OFDM symbol, subcarrier #10, the subcarrier #1 of the 8th OFDM symbol, subcarrier #6, the 11st The subcarrier #4 of OFDM symbol, subcarrier #10；

With reference to Fig. 7 f to reference signal #0, reference signal #1, reference signal #2, reference signal #3 Physical Resource Block Mapping illustrates, and as depicted in fig. 7f, processes including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #0 of the 5th OFDM symbol, subcarrier #6, the subcarrier #5 of the 8th OFDM symbol, subcarrier #11, the The subcarrier #3 of 11 OFDM symbol, subcarrier #9；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #3 of the 5th OFDM symbol, subcarrier #9, the subcarrier #2 of the 8th OFDM symbol, subcarrier #8, the 11st The subcarrier #0 of OFDM symbol, subcarrier #6；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #1 of the 5th OFDM symbol, subcarrier #7, the subcarrier #1 of the 8th OFDM symbol, subcarrier #6, the The subcarrier #4 of 11 OFDM symbol, subcarrier #10；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #4 of the 5th OFDM symbol, subcarrier #10, the subcarrier #3 of the 8th OFDM symbol, subcarrier #9, the 11st The subcarrier #1 of OFDM symbol, subcarrier #7；

With reference to Fig. 7 g to reference signal #0, reference signal #1, reference signal #2, reference signal #3 Physical Resource Block Mapping illustrates, and as shown in figure 7g, processes including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #0 of the 5th OFDM symbol, subcarrier #9, the subcarrier #5 of the 8th OFDM symbol, subcarrier #8, the 11st The subcarrier #0 of individual OFDM symbol, subcarrier #9；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #1 of the 5th OFDM symbol, subcarrier #10, the subcarrier #4 of the 8th OFDM symbol, subcarrier #7, the The subcarrier #1 of 11 OFDM symbol, subcarrier #10；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #4 of the 5th OFDM symbol, subcarrier #7, the subcarrier #2 of the 8th OFDM symbol, subcarrier #10, the 11st The subcarrier #4 of OFDM symbol, subcarrier #7；

With reference to Fig. 7 h to reference signal #0, reference signal #1, reference signal #2, reference signal #3 Physical Resource Block Mapping illustrates, and as shown in Fig. 7 h, processes including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #0 of the 5th OFDM symbol, subcarrier #4, subcarrier #8, the subcarrier #0 of the 11st OFDM symbol, son Carrier wave #4, subcarrier #8；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #1 of the 5th OFDM symbol, subcarrier #5, subcarrier #9, the subcarrier #1 of the 11st OFDM symbol, son Carrier wave #5, subcarrier #9；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #3 of the 5th OFDM symbol, subcarrier #7, subcarrier #11, the subcarrier #3 of the 11st OFDM symbol, sub- load Ripple #7, subcarrier #11；

Example 4

This example describes to transmit the mapping of the Physical Resource Block of eight layers of reference signal in a subframe.

When Fig. 8 a and Fig. 8 b is that subframe adopts conventional cyclic prefix, situation in Physical Resource Block for the reference signal shows It is intended to, as figures 8 a and 8 b show, including reference signal #0 of layer 1, reference signal #1 of layer 2, reference signal #2 of layer 3, layer 4 Reference signal #3, reference signal #4 of layer 5, reference signal #5 of layer 6, reference signal #6 of layer 7, reference signal #7 of layer 8, And this Physical Resource Block comprises 12 subcarriers in frequency domain, comprise 14 OFDM symbol in time domain.

With reference to Fig. 8 a to reference signal #0, reference signal #1, reference signal #2, reference signal #3, reference signal #4, Reference signal #5, reference signal #6, the Physical Resource Block mapping of reference signal #7 illustrate, reference signal #0, reference signal # 1st, reference signal #2, reference signal #3, reference signal #4, reference signal #5, reference signal #6, reference signal #7 are mapped to thing In 4th, 7,10,13 OFDM symbol in 14 OFDM symbol of reason Resource Block, i.e. first OFDM symbol above corresponds to In the 4th OFDM symbol, second OFDM symbol corresponds to the 7th OFDM symbol, and the 3rd OFDM symbol corresponds to the 10th OFDM symbol, the 4th OFDM symbol corresponds to the 13rd OFDM symbol, as shown in Figure 8 a, processes including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #0 of the 4th OFDM symbol, subcarrier #4, subcarrier #8；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 7th OFDM symbol, subcarrier #4, subcarrier #8；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 10th OFDM symbol, subcarrier #6, subcarrier #10；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 13rd OFDM symbol, subcarrier #6, subcarrier #10；

5th tunnel reference signal (that is, reference signal #4) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：The The subcarrier #2 of four OFDM symbol, subcarrier #6, subcarrier #10；

6th tunnel reference signal (that is, reference signal #5) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：7th The subcarrier #2 of individual OFDM symbol, subcarrier #6, subcarrier #10；

7th tunnel reference signal (that is, reference signal #6) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：The The subcarrier #0 of 10 OFDM symbol, subcarrier #4, subcarrier #8；

8th tunnel reference signal (that is, reference signal #7) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：The The subcarrier #0 of 13 OFDM symbol, subcarrier #4, subcarrier #8；

With reference to Fig. 8 b to reference signal #0, reference signal #1, reference signal #2, reference signal #3, reference signal #4, Reference signal #5, reference signal #6, the Physical Resource Block mapping of reference signal #7 illustrate, reference signal #0, reference signal # 1st, reference signal #2, reference signal #3, reference signal #4, reference signal #5, reference signal #6, reference signal #7 are mapped to physics In 4th, 7,10,13 OFDM symbol in 14 OFDM symbol of Resource Block, i.e. first OFDM symbol above corresponds to 4th OFDM symbol, second OFDM symbol corresponds to the 7th OFDM symbol, and the 3rd OFDM symbol corresponds to the 10th OFDM symbol, the 4th OFDM symbol corresponds to the 13rd OFDM symbol, as shown in Figure 8 b, processes including following：

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 7th OFDM symbol, subcarrier #6, subcarrier #10；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 13rd OFDM symbol, subcarrier #4, subcarrier #8；

6th tunnel reference signal (that is, reference signal #5) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：7th The subcarrier #0 of individual OFDM symbol, subcarrier #4, subcarrier #8；

8th tunnel reference signal (that is, reference signal #7) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：The The subcarrier #2 of 13 OFDM symbol, subcarrier #6, subcarrier #10；

When Fig. 8 c and Fig. 8 d is that subframe adopts extended cyclic prefix, situation in Physical Resource Block for the reference signal shows It is intended to, as shown in Fig. 8 c and Fig. 8 d, including reference signal #0 of layer 1, reference signal #1 of layer 2, reference signal #2 of layer 3, layer 4 Reference signal #3, reference signal #4 of layer 5, reference signal #5 of layer 6, reference signal #6 of layer 7, reference signal #7 of layer 8, And this Physical Resource Block comprises 12 subcarriers in frequency domain, comprise 12 OFDM symbol in time domain.

With reference to Fig. 8 c to reference signal #0, reference signal #1, reference signal #2, reference signal #3, reference signal #4, Reference signal #5, reference signal #6, the Physical Resource Block mapping of reference signal #7 illustrate, reference signal #0, reference signal # 1st, reference signal #2, reference signal #3, reference signal #4, reference signal #5, reference signal #6, reference signal #7 are mapped to physics In 5th, 6,11,12 OFDM symbol in 12 OFDM symbol of Resource Block, i.e. first OFDM symbol above corresponds to 5th OFDM symbol, second OFDM symbol corresponds to the 6th OFDM symbol, and the 3rd OFDM symbol corresponds to the 11st OFDM symbol, the 4th OFDM symbol corresponds to the 12nd OFDM symbol, as shown in Figure 8 c, processes including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to the following time-frequency location of above-mentioned Physical Resource Block (A=0)：The subcarrier #0 of the 5th OFDM symbol, subcarrier #3, subcarrier #6, subcarrier #9；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #0 of the 6th OFDM symbol, subcarrier #3, subcarrier #6, subcarrier #9；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 11st OFDM symbol, subcarrier #5, subcarrier #8, subcarrier #11；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the following time-frequency position of above-mentioned Physical Resource Block Put：The subcarrier #2 of the 12nd OFDM symbol, subcarrier #5, subcarrier #8, subcarrier #11；

5th tunnel reference signal (that is, reference signal #4) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：5th The subcarrier #2 of individual OFDM symbol, subcarrier #5, subcarrier #8, subcarrier #11；

6th tunnel reference signal (that is, reference signal #5) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：6th The subcarrier #2 of individual OFDM symbol, subcarrier #5, subcarrier #8, subcarrier #11；

7th tunnel reference signal (that is, reference signal #6) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：The The subcarrier #0 of 11 OFDM symbol, subcarrier #3, subcarrier #6, subcarrier #9；

8th tunnel reference signal (that is, reference signal #7) is mapped to the following time-frequency location of above-mentioned Physical Resource Block：The The subcarrier #0 of 12 OFDM symbol, subcarrier #3, subcarrier #6, subcarrier #9；

With reference to Fig. 8 d to reference signal #0, reference signal #1, reference signal #2, reference signal #3, reference signal #4, Reference signal #5, reference signal #6, the Physical Resource Block mapping of reference signal #7 illustrate, by this reference signal #0, reference Signal #1, reference signal #2, reference signal #3, reference signal #4, reference signal #5, reference signal #6, the mapping of reference signal #7 Different carrier in the 5th OFDM symbol or the 12nd OFDM symbol in 12 OFDM symbol of Physical Resource Block, such as Fig. 8 d Shown, process including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to above-mentioned Physical Resource Block (A=0) the 5th The subcarrier #0 of OFDM symbol, subcarrier #4, subcarrier #8；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the 12nd OFDM symbol of above-mentioned Physical Resource Block Subcarrier #2, subcarrier #6, subcarrier #10；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the 5th OFDM symbol of above-mentioned Physical Resource Block Subcarrier #1, subcarrier #5, subcarrier #9；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the 12nd OFDM symbol of above-mentioned Physical Resource Block Subcarrier #3, subcarrier #7, subcarrier #11；

5th tunnel reference signal (that is, reference signal #4) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #2, subcarrier #6, subcarrier #10；

6th tunnel reference signal (that is, reference signal #5) is mapped to the son of the 12nd OFDM symbol of above-mentioned Physical Resource Block Carrier wave #0, subcarrier #4, subcarrier #8；

7th tunnel reference signal (that is, reference signal #6) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #3, subcarrier #7, subcarrier #11；

8th tunnel reference signal (that is, reference signal #7) is mapped to the son of the 12nd OFDM symbol of above-mentioned Physical Resource Block Carrier wave #1, subcarrier #5, subcarrier #9；

With reference to Fig. 8 e to reference signal #0, reference signal #1, reference signal #2, reference signal #3, reference signal #4, Reference signal #5, reference signal #6, the Physical Resource Block mapping of reference signal #7 illustrate, by this reference signal #0, reference Signal #1, reference signal #2, reference signal #3, reference signal #4, reference signal #5, reference signal #6, the mapping of reference signal #7 Different carrier in the 5th OFDM symbol or the 12nd OFDM symbol in 12 OFDM symbol of Physical Resource Block, such as Fig. 8 e Shown, process including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to above-mentioned Physical Resource Block (A=0) the 5th The subcarrier #0 of OFDM symbol, the subcarrier #5 of the 8th OFDM symbol, the subcarrier #9 of the 11st OFDM symbol；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the 5th OFDM symbol of above-mentioned Physical Resource Block Subcarrier #3, the subcarrier #8 of the 8th OFDM symbol, the subcarrier #0 of the 11st OFDM symbol；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the 5th OFDM symbol of above-mentioned Physical Resource Block Subcarrier #1, the subcarrier #6 of the 8th OFDM symbol, the subcarrier #10 of the 11st OFDM symbol；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the 5th OFDM symbol of above-mentioned Physical Resource Block Subcarrier #4, the subcarrier #10 of the 8th OFDM symbol, the subcarrier #1 of the 11st OFDM symbol；

5th tunnel reference signal (that is, reference signal #4) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #6, the subcarrier #11 of the 8th OFDM symbol, the subcarrier #3 of the 11st OFDM symbol；

6th tunnel reference signal (that is, reference signal #5) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #10, the subcarrier #2 of the 8th OFDM symbol, the subcarrier #6 of the 11st OFDM symbol；

7th tunnel reference signal (that is, reference signal #6) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #7, the subcarrier #0 of the 8th OFDM symbol, the subcarrier #4 of the 11st OFDM symbol；

8th tunnel reference signal (that is, reference signal #7) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #10, the subcarrier #3 of the 8th OFDM symbol, the subcarrier #7 of the 11st OFDM symbol；

With reference to Fig. 8 f to reference signal #0, reference signal #1, reference signal #2, reference signal #3, reference signal #4, Reference signal #5, reference signal #6, the Physical Resource Block mapping of reference signal #7 illustrate, by this reference signal #0, reference Signal #1, reference signal #2, reference signal #3, reference signal #4, reference signal #5, reference signal #6, the mapping of reference signal #7 Different carrier in the 5th OFDM symbol or the 12nd OFDM symbol in 12 OFDM symbol of Physical Resource Block, such as Fig. 8 f Shown, process including following：

Reference signal described in the first via (that is, reference signal #0) is mapped to above-mentioned Physical Resource Block (A=0) the 5th The subcarrier #0 of OFDM symbol, the subcarrier #2 of the 8th OFDM symbol, the subcarrier #6 of the 11st OFDM symbol；

Reference signal described in second tunnel (that is, reference signal #1) is mapped to the 5th OFDM symbol of above-mentioned Physical Resource Block Subcarrier #3, the subcarrier #5 of the 8th OFDM symbol, the subcarrier #9 of the 11st OFDM symbol；

Reference signal (that is, reference signal #2) described in 3rd tunnel is mapped to the 5th OFDM symbol of above-mentioned Physical Resource Block Subcarrier #1, the subcarrier #3 of the 8th OFDM symbol, the subcarrier #7 of the 11st OFDM symbol；

Reference signal (that is, reference signal #3) described in 4th tunnel is mapped to the 5th OFDM symbol of above-mentioned Physical Resource Block Subcarrier #4, the subcarrier #6 of the 8th OFDM symbol, the subcarrier #10 of the 11st OFDM symbol；

5th tunnel reference signal (that is, reference signal #4) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #6, the subcarrier #8 of the 8th OFDM symbol, the subcarrier #0 of the 11st OFDM symbol；

6th tunnel reference signal (that is, reference signal #5) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #9, the subcarrier #11 of the 8th OFDM symbol, the subcarrier #3 of the 11st OFDM symbol；

7th tunnel reference signal (that is, reference signal #6) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #7, the subcarrier #9 of the 8th OFDM symbol, the subcarrier #1 of the 11st OFDM symbol；

8th tunnel reference signal (that is, reference signal #7) is mapped to the son of the 5th OFDM symbol of above-mentioned Physical Resource Block Carrier wave #10, the subcarrier #0 of the 8th OFDM symbol, the subcarrier #4 of the 11st OFDM symbol；

Example 2, example 3 and embodiment 4 sets forth the reference signal pattern schematic diagram of two-layer, four layers and eight layers, fill out The blank of prior art, and, the mapping method of the reference signal based on this pattern are mended, it is possible to increase the globality of system Energy.

As described above, by means of the present invention provide reference signal and Physical Resource Block mapping method, by clear and definite base In the position in Physical Resource Block for each reference signal of layer, fill up the blank of prior art, by reference signal of the present invention Resource block mapping scheme, it is possible to increase the overall performance of system.

It should be noted that the present invention illustrates technical scheme only taking examples detailed above as a example, but it is not limited to This, using inventive concept reference signal mapping scheme all within protection scope of the present invention.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims

1. the mapping method of a kind of reference signal and Physical Resource Block, drills for a long time for being mapped to one or more reference signal Enter on the Physical Resource Block of system, wherein, described Physical Resource Block comprises 12 subcarriers, described Physical Resource Block on frequency domain Including two equal continuous slots of time domain length, and every road reference signal all includes multiple reference signals, described reference letter Number for high-order MIMO reference signal it is characterised in that include：

One or more described reference signal is mapped on N number of orthogonal frequency division multiplex OFDM symbol of described Physical Resource Block, Wherein, the value of N is one below：2、4；

Reference signal described in each road is mapped on M subcarrier in described OFDM symbol, wherein, the value of M is following One of：1,2,3,4；

Described long evolving system adopts conventional cyclic prefix, wherein, when described Physical Resource Block comprises 14 OFDM in time domain Symbol, one or more described reference signal is mapped on 4 orthogonal frequency division multiplex OFDM symbols of described Physical Resource Block, Described be mapped with reference signal 4 OFDM symbol be：6th, 7,13,14 OFDM symbol in described 14 OFDM symbol；Or 5th, 8,9,12 OFDM symbol in 14 OFDM symbol described in person；Or the 4th, 7,10,13 in described 14 OFDM symbol OFDM symbol；Or the 4th, 7,11,14 OFDM symbol in described 14 OFDM symbol；Or in described 14 OFDM symbol 4th, 7,10,14 OFDM symbol；Or the 4th, 6,13,14 OFDM symbol in described 14 OFDM symbol；

When described Physical Resource Block comprises 12 OFDM symbol in time domain, one or more described reference signal is mapped to described On 4 orthogonal frequency division multiplex OFDM symbols of Physical Resource Block, described be mapped with reference signal 4 OFDM symbol be：Described 5th, 6,9,11 OFDM symbol in 12 OFDM symbol；Or the 5th, 6,11,12 OFDM symbols in described 12 OFDM symbol Number；Or the 4th, 7,8,10 OFDM symbol in described 12 OFDM symbol；Or the 5th, 6,8,9 in described 12 OFDM symbol Individual OFDM symbol；

When described Physical Resource Block comprises 14 OFDM symbol in time domain, one or more described reference signal is mapped to described On 2 orthogonal frequency division multiplex OFDM symbols of Physical Resource Block, described be mapped with reference signal 2 OFDM symbol be：Described 4th OFDM symbol and the 14th OFDM symbol in 14 OFDM symbol；Or the 4th OFDM symbol in described 14 OFDM symbol Number and the 13rd OFDM symbol；Or the 6th OFDM symbol and the 14th OFDM symbol in described 14 OFDM symbol；Or institute State the 6th OFDM symbol and the 13rd OFDM symbol in 14 OFDM symbol；Or the 6th OFDM in described 14 OFDM symbol Symbol and the 11st OFDM symbol；Or the 10th OFDM symbol and the 11st OFDM symbol in described 14 OFDM symbol；

When described Physical Resource Block comprises 12 OFDM symbol in time domain, one or more described reference signal is mapped to described On 2 orthogonal frequency division multiplex OFDM symbols of Physical Resource Block, described be mapped with reference signal 2 OFDM symbol be：Described 5th OFDM symbol and the 12nd OFDM symbol in 12 OFDM symbol；Or the 5th OFDM symbol in described 12 OFDM symbol Number and the 9th OFDM symbol；Or the 5th OFDM symbol and the 11st OFDM symbol in described 12 OFDM symbol；Or institute State the 8th OFDM symbol and the 9th OFDM symbol in 12 OFDM symbol.

2. method according to claim 1 is it is characterised in that described long evolving system adopts conventional cyclic prefix, institute State Physical Resource Block and comprise 14 OFDM symbol in time domain, described multichannel reference signal is 2 tunnels, and described 2 tunnel reference signals are reflected It is mapped in 4 OFDM symbol of described Physical Resource Block, and reference signal described in each road is mapped to described OFDM symbol On M subcarrier on specifically include following at least one method：

Method one：

Multiple reference signals in reference signal described in 1st tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 1 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12, the 3rd OFDM symbol of described 4 OFDM symbol Number subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 2 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12, the 4th OFDM symbol of described 4 OFDM symbol Number subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12；

Wherein, A=0,1,2,3；

Method two：

Multiple reference signals in reference signal described in 1st tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 1 OFDM symbol, subcarrier (A+8) mod 12, the subcarrier of the 2nd OFDM symbol of described 4 OFDM symbol A+6, the subcarrier A of the 3rd OFDM symbol of described 4 OFDM symbol, subcarrier (A+8) mod 12, described 4 OFDM symbol The 4th OFDM symbol subcarrier A+6；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+6 of 1 OFDM symbol, the subcarrier A of the 2nd OFDM symbol of described 4 OFDM symbol, subcarrier (A+8) mod 12, the subcarrier A+6 of the 3rd OFDM symbol of described 4 OFDM symbol, the 4th OFDM symbol of described 4 OFDM symbol Subcarrier A, subcarrier (A+8) mod 12；

Wherein, A=0,1,2,3.

3. method according to claim 1 is it is characterised in that described long evolving system adopts extended cyclic prefix, institute State Physical Resource Block and comprise 12 OFDM symbol in time domain, described multichannel reference signal is 2 tunnels, and by reference described in each road Following at least one method is specifically included on the M subcarrier that signal is mapped in described OFDM symbol：

Multiple reference signals in reference signal described in 1st tunnel are mapped to following time-frequency location：The 1st of 2 OFDM symbol The subcarrier A of OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12, the 2nd of described 2 OFDM symbol the The subcarrier A of individual OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；By reference signal described in the 2nd tunnel In multiple reference signals be mapped to following time-frequency location：The subcarrier A+B of the 1st OFDM symbol of described 2 OFDM symbol, Subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12, the 2nd OFDM symbol of described 2 OFDM symbol Subcarrier A+B, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod 12；Wherein, A=0,1,2；B=1,2；

Multiple reference signals in reference signal described in 1st tunnel are mapped to following time-frequency location：The 1st of 2 OFDM symbol The subcarrier A of OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12, the 2nd OFDM symbol of described 2 OFDM symbol Subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12；By the multiple reference signal mappings in reference signal described in the 2nd tunnel To following time-frequency location：The subcarrier A+B of the 1st OFDM symbol of described 2 OFDM symbol, subcarrier A+4+B, subcarrier (A + 8+B) mod 12, the subcarrier A+B of the 2nd OFDM symbol of described 2 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+ B)mod 12；Wherein, A=0,1,2；B=1,2.

4. method according to claim 1 is it is characterised in that described multichannel reference signal is 4 tunnels, by described 4 tunnel references Signal is mapped in 2 OFDM symbol of described Physical Resource Block, and reference signal described in each road is mapped to described Following at least one method is specifically included on M subcarrier in OFDM symbol：

Method one：

Multiple reference signals in reference signal described in 1st tunnel are mapped to the son of the 1st OFDM symbol of two OFDM symbol Carrier wave A, subcarrier A+4, subcarrier (A+8) mod 12, the subcarrier A of the 2nd OFDM symbol of described two OFDM symbol, son Carrier wave A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12, the son of the 2nd OFDM symbol of described two OFDM symbol Carrier wave A+2, subcarrier A+6, subcarrier (A+10) mod 12；

Multiple reference signals in reference signal described in 3rd tunnel are mapped the 1st OFDM symbol of described two OFDM symbol Subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12, the subcarrier of the 2nd OFDM symbol of described two OFDM symbol A+1, subcarrier A+5, subcarrier (A+9) mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12, the son of the 2nd OFDM symbol of described two OFDM symbol Carrier wave A+3, subcarrier A+7, subcarrier (A+11) mod 12；

Wherein, A=0,1,2,3；

Method two：

Multiple reference signals in reference signal described in 1st tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12, the subcarrier of the 2nd OFDM symbol of described two OFDM symbol A, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12, the 2nd OFDM symbol of described two OFDM symbol son load Ripple A+1, subcarrier A+5, subcarrier (A+9) mod 12；

Multiple reference signals in reference signal described in 3rd tunnel are mapped the 1st OFDM symbol of described two OFDM symbol Subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12, the son load of the 2nd OFDM symbol of described two OFDM symbol Ripple A+2, subcarrier A+6, subcarrier (A+10) mod 12；

Wherein, A=0,1,2,3；

Method three：

Multiple reference signals in reference signal described in 3rd tunnel are mapped the 1st OFDM symbol of described two OFDM symbol Subcarrier A+1, subcarrier A+7, the subcarrier A+1 of the 2nd OFDM symbol of described two OFDM symbol, subcarrier A+7；

Multiple reference signals in reference signal described in 4th tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+3, subcarrier A+9, the subcarrier A+3 of the 2nd OFDM symbol of described two OFDM symbol, subcarrier A+9；

Wherein, A=0,1,2,3；

Method four：

Multiple reference signals in reference signal described in 1st tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A, subcarrier A+6, the A of the 2nd OFDM symbol of described two OFDM symbol, subcarrier A+6；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+3, subcarrier (A+9) mod 12, the subcarrier A+3 of second OFDM symbol of described two OFDM symbol, son Carrier wave (A+9) mod 12；

Multiple reference signals in reference signal described in 3rd tunnel are mapped the 1st OFDM symbol of described two OFDM symbol Subcarrier A+2, subcarrier (A+8) mod 12, the subcarrier A+2 of the 2nd OFDM symbol of described two OFDM symbol, subcarrier (A+8)mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+4, subcarrier (A+10) mod 12, the subcarrier A+4 of the 2nd OFDM symbol of described two OFDM symbol, son Carrier wave (A+10) mod 12；

Wherein, A=0,1,2,3,4,5；

Method five：

Multiple reference signals in reference signal described in 3rd tunnel are mapped the 1st OFDM symbol of described two OFDM symbol Subcarrier A+1, subcarrier (A+7) mod 12, the subcarrier A+1 of the 2nd OFDM symbol of described two OFDM symbol, subcarrier (A+7)mod 12；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+2, subcarrier (A+8) mod 12, the subcarrier A+2 of the 2nd OFDM symbol of described two OFDM symbol, sub- load Ripple (A+8) mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+3, subcarrier (A+9) mod 12, the subcarrier A+3 of the 2nd OFDM symbol of described two OFDM symbol, sub- load Ripple (A+9) mod 12；

Wherein, A=0,1,2,3,4,5.

5. method according to claim 1 is it is characterised in that described multichannel reference signal is 4 tunnels, by described 4 tunnel references Signal is mapped in 4 OFDM symbol of described Physical Resource Block, and reference signal described in each road is mapped to described Following at least one method is specifically included on M subcarrier in OFDM symbol：

Method one：

Multiple reference signals in reference signal described in 3rd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 1 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12, the 3rd of described 4 OFDM symbol The subcarrier A+B of OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 2 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12, the 4th of described 4 OFDM symbol The subcarrier A+B of OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Wherein, A=0,1,2,3；B=1,2；

Method two：

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 2 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12, the 4th of described 4 OFDM symbol The subcarrier A+B of OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 2 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12, the 4th OFDM symbol of described 4 OFDM symbol Number subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12；

Wherein, A=0,1,2,3；B=1,2；

Method three：

Multiple reference signals in reference signal described in 3rd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+1 of 1 OFDM symbol, subcarrier A+7, the subcarrier A+1 of the 3rd OFDM symbol of described 4 OFDM symbol, son Carrier wave A+7；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+1 of 2 OFDM symbol, subcarrier A+7, the subcarrier A+1 of the 4th OFDM symbol of described 4 OFDM symbol, son Carrier wave A+7；

Wherein, A=0,1,2,3；

Method four：

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+2 of 2 OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12, the 4th of described 4 OFDM symbol The subcarrier A+2 of OFDM symbol, subcarrier A+6, subcarrier (A+10) mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+3 of 2 OFDM symbol, subcarrier A+9, the subcarrier A+3 of the 4th OFDM symbol of described 4 OFDM symbol, son Carrier wave A+9；

Wherein, A=0,1,2；

Method five：

Multiple reference signals in reference signal described in 1st tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 1 OFDM symbol, subcarrier A+6, the subcarrier A of the 3rd OFDM symbol of described 4 OFDM symbol, subcarrier A+6；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 2 OFDM symbol, subcarrier A+6, the subcarrier A of the 4th OFDM symbol of described 4 OFDM symbol, subcarrier A+6；

Multiple reference signals in reference signal described in 3rd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+3 of 1 OFDM symbol, subcarrier A+9, the subcarrier A+3 of the 3rd OFDM symbol of described 4 OFDM symbol, son Carrier wave A+9；

Wherein, A=0,1,2；

Method six：

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+3 of 2 OFDM symbol, subcarrier A+9, the subcarrier A+3 of the 4th OFDM symbol of described 4 OFDM symbol, son Carrier wave A+9；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 2 OFDM symbol, subcarrier A+6, the subcarrier A of the 4th OFDM symbol of described 4 OFDM symbol, subcarrier A+6；

Wherein, A=0,1,2.

6. the method according to any one of claim 4 to 5, will it is characterised in that needing the reference signal of mapping to be 3 tunnels On the time-frequency location of arbitrary road reference signal in the described 4 tunnel reference signals of mapping, the reference signal of mapping replaces with data.

7. method according to claim 1 is it is characterised in that described multichannel reference signal is 8 tunnels, by described 8 tunnel references Signal is mapped in 4 OFDM symbol of described Physical Resource Block, and reference signal described in each road is mapped to described Following at least one method is specifically included on M subcarrier in OFDM symbol：

Method one：

Multiple reference signals in reference signal described in 1st tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 1 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 2 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 3rd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 3 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 4 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Multiple reference signals in reference signal described in 5th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 1 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Multiple reference signals in reference signal described in 6th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 2 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Multiple reference signals in reference signal described in 77th tunnel are mapped to following time-frequency location：Described 4 OFDM symbol The subcarrier A of the 3rd OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 8th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 4 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；

Wherein, A=0；B=1,2；

Method two：

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 2 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 4 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 6th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 2 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 7th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 3 OFDM symbol, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 8th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 4 OFDM symbol, subcarrier A+4+B, subcarrier (A+8+B) mod 12；

Wherein, A=0；B=1,2；

Method three：

Multiple reference signals in reference signal described in 1st tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 1 OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 2 OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；

Multiple reference signals in reference signal described in 3rd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 3 OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 4 OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12；

Multiple reference signals in reference signal described in 5th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 1 OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12；

Multiple reference signals in reference signal described in 6th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 2 OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12；

Multiple reference signals in reference signal described in 7th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 3 OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；

Multiple reference signals in reference signal described in 8th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 4 OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；

Wherein, A=0；B=1,2；

Method four：

Multiple reference signals in reference signal described in 2nd tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 2 OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12；

Multiple reference signals in reference signal described in 4th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 4 OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；

Multiple reference signals in reference signal described in 6th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A of 2 OFDM symbol, subcarrier A+3, subcarrier A+6, subcarrier (A+9) mod 12；

Multiple reference signals in reference signal described in 8th tunnel are mapped to following time-frequency location：The of described 4 OFDM symbol The subcarrier A+B of 4 OFDM symbol, subcarrier A+3+B, subcarrier A+6+B, subcarrier (A+9+B) mod12；

Wherein, A=0；B=1,2.

8. method according to claim 1 is it is characterised in that described multichannel reference signal is 8 tunnels, by described 8 tunnel references Signal is mapped in 2 OFDM symbol of described Physical Resource Block, and reference signal described in each road is mapped to described Specifically include on M subcarrier in OFDM symbol：

Multiple reference signals in reference signal described in 1st tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 2nd tunnel are mapped to the 2nd OFDM symbol of described two OFDM symbol Subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12；

Multiple reference signals in reference signal described in 3rd tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12；

Multiple reference signals in reference signal described in 4th tunnel are mapped the 2nd OFDM symbol of described two OFDM symbol To subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12；

Multiple reference signals in reference signal described in 5th tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+2, subcarrier A+6, subcarrier (A+10) mod 12；

Multiple reference signals in reference signal described in 6th tunnel are mapped to the 2nd OFDM symbol of described two OFDM symbol Subcarrier A, subcarrier A+4, subcarrier (A+8) mod 12；

Multiple reference signals in reference signal described in 7th tunnel are mapped to the 1st OFDM symbol of described two OFDM symbol Subcarrier A+3, subcarrier A+7, subcarrier (A+11) mod 12；

Multiple reference signals in reference signal described in 8th tunnel are mapped the 2nd OFDM symbol of described two OFDM symbol To subcarrier A+1, subcarrier A+5, subcarrier (A+9) mod 12；

Wherein, A=0.

9. method according to claim 1 is it is characterised in that described long evolving system adopts extended cyclic prefix, institute State Physical Resource Block and comprise 12 OFDM symbol in time domain, described multichannel reference signal is 8 tunnels, and by reference described in each road Following at least one method is specifically included on the M subcarrier that signal is mapped in described OFDM symbol：

Method one：

Reference signal described in 1st tunnel is mapped to the subcarrier 0 of the 5th OFDM symbol, subcarrier 4, subcarrier 8；

Reference signal described in 2nd tunnel is mapped to the subcarrier 2 of the 12nd OFDM symbol, subcarrier 6, subcarrier 10；

Reference signal described in 3rd tunnel is mapped to the subcarrier 1 of the 5th OFDM symbol, subcarrier 5, subcarrier 9；

Reference signal described in 4th tunnel is mapped to the subcarrier 3 of the 12nd OFDM symbol, subcarrier 7, subcarrier 11；

Reference signal described in 5th tunnel is mapped to the subcarrier 2 of the 5th OFDM symbol, subcarrier 6, subcarrier 10；

Reference signal described in 6th tunnel is mapped to the subcarrier 0 of the 12nd OFDM symbol, subcarrier 4, subcarrier 8；

Reference signal described in 7th tunnel is mapped to the subcarrier 3 of the 5th OFDM symbol, subcarrier 7, subcarrier 11；

Reference signal described in 8th tunnel is mapped to the subcarrier 1 of the 12nd OFDM symbol, subcarrier 5, subcarrier 9；

Method two：

By reference signal described in the 1st tunnel be mapped to the subcarrier 0 of the 5th OFDM symbol, the subcarrier 5 of the 8th OFDM symbol, The subcarrier 9 of 11 OFDM symbol；

By reference signal described in the 2nd tunnel be mapped to the subcarrier 3 of the 5th OFDM symbol, the subcarrier 8 of the 8th OFDM symbol, The subcarrier 0 of 11 OFDM symbol；

By reference signal described in the 3rd tunnel be mapped to the subcarrier 1 of the 5th OFDM symbol, the subcarrier 6 of the 8th OFDM symbol, The subcarrier 10 of 11 OFDM symbol；

By reference signal described in the 4th tunnel be mapped to the subcarrier 4 of the 5th OFDM symbol, the subcarrier 10 of the 8th OFDM symbol, The subcarrier 1 of the 11st OFDM symbol；

By reference signal described in the 5th tunnel be mapped to the subcarrier 6 of the 5th OFDM symbol, the subcarrier 11 of the 8th OFDM symbol, The subcarrier 3 of the 11st OFDM symbol；

By reference signal described in the 6th tunnel be mapped to the subcarrier 10 of the 5th OFDM symbol, the subcarrier 2 of the 8th OFDM symbol, The subcarrier 6 of the 11st OFDM symbol；

By reference signal described in the 7th tunnel be mapped to the subcarrier 7 of the 5th OFDM symbol, the subcarrier 0 of the 8th OFDM symbol, The subcarrier 4 of 11 OFDM symbol；

By reference signal described in the 8th tunnel be mapped to the subcarrier 11 of the 5th OFDM symbol, the subcarrier 3 of the 8th OFDM symbol, The subcarrier 7 of the 11st OFDM symbol.

10. the method according to any one of claim 7 to 9 it is characterised in that

Reference signal if necessary to mapping is 5 tunnels, then by any 3 tunnel reference signals in the described 8 tunnel reference signals of mapping Time-frequency location on mapping reference signal replace with data；

Reference signal if necessary to mapping is 6 tunnels, then by any 2 tunnel reference signals in the described 8 tunnel reference signals of mapping Time-frequency location on mapping reference signal replace with data；

Reference signal if necessary to mapping is 7 tunnels, then by the arbitrary road reference signal in the described 8 tunnel reference signals of mapping On time-frequency location, the reference signal of mapping replaces with data.

11. methods according to any one of claim 7 to 9 it is characterised in that

Reference signal if necessary to mapping is 5 tunnels, then by any 3 tunnel reference signals in the described 8 tunnel reference signals of mapping Time-frequency location on reference signal replace with the reference signal on the 1st road any 3 tunnels in the 4th tunnel；

Reference signal if necessary to mapping is 6 tunnels, then by any 2 tunnel reference signals in the described 8 tunnel reference signals of mapping Time-frequency location on reference signal replace with any 3 kinds in described 8 tunnel reference signals in any 2 tunnels reference signal；

Reference signal if necessary to mapping is 7 tunnels, then by any 1 tunnel reference signal in the described 8 tunnel reference signals of mapping Time-frequency location on reference signal replace with any two kinds in described 8 tunnel reference signals in any 1 tunnel reference signal.

12. methods according to claim 1 it is characterised in that the 1st OFDM symbol, the 2nd OFDM symbol, the 3rd The ascending arrangement of time-domain position coordinate of OFDM symbol and described 4th OFDM symbol or descending arrangement.

13. according to claim 1-5,7-9, and the method any one of 12 is it is characterised in that described reference signal refers to base Reference signal in layer.

14. methods according to claim 6 are it is characterised in that described reference signal refers to the reference signal based on layer.

15. methods according to claim 10 are it is characterised in that described reference signal refers to the reference signal based on layer.

16. methods according to claim 11 are it is characterised in that described reference signal refers to the reference signal based on layer.