CN106487472A - The processing method and processing device of up-downgoing interference coordination - Google Patents

The processing method and processing device of up-downgoing interference coordination Download PDF

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Publication number
CN106487472A
CN106487472A CN201510557089.6A CN201510557089A CN106487472A CN 106487472 A CN106487472 A CN 106487472A CN 201510557089 A CN201510557089 A CN 201510557089A CN 106487472 A CN106487472 A CN 106487472A
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network side
base station
sub
frame
subframe
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任敏
赵亚军
左志松
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2016/095727 priority patent/WO2017036306A1/en
Publication of CN106487472A publication Critical patent/CN106487472A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a kind of processing method and processing device of up-downgoing interference coordination, wherein, the method includes：The sub-frame of uplink of transmission and descending sub frame form proportioning between first network side and the second network side, wherein, this second network side is adjacent frequency band or the adjacent networks with frequency band of this first network side, this first network is collateral to hold full downlink sub-frame transmission, this first network side is according to this second network side sub-frame of uplink and descending sub frame form proportioning, determine whether to open descending to uplink interference avoidance mechanism, solve the problems, such as adjacent frequency band and the support full downlink sub-frame Format network side with frequency band and the network side how interference coordination only supporting existing TDD sub-frame formats, effectively achieve different network sides descending to up interference coordination.

Description

The processing method and processing device of up-downgoing interference coordination
Technical field
The present invention relates to the communications field, in particular to a kind of processing method and processing device of up-downgoing interference coordination.
Background technology
Time division duplex (Time Division Duplex, referred to as TDD) network side be divided in time domain up (by with Family terminal (User Equipment, UE) issues base station (Evolved Node Base station, eNB)) and descending (by base station Issue user terminal) resource, and in units of time slot or subframe, generally carry out the distribution of up-downgoing resource.Ordinary circumstance Under, base station utilizes broadcast network side information (System Information, referred to as SI) upper and lower in the way of semi-static The distribution condition of row resource notifies to all user terminals (User Equipment, referred to as UE) in cell.
The uplink-downlink configuration mode of Long Term Evolution (Long Term Evolution, referred to as LTE) network side tdd mode is such as Shown in table 1.Wherein, D represents the descending sub frame for transmission of downlink signal, and U represents for transmitting upward signal Row subframe, S represents special subframe and comprises three special time slots, that is, descending pilot frequency time slot (Downlink Pilot Time Slot, Referred to as DwPTS, for downlink transfer), protection interval (Guard Period, referred to as GP) and during ascending pilot frequency Gap (Uplink Pilot Time Slot, referred to as UpPTS, for uplink).
Table 1
According to table 1, in LTE-TDD network side, can produce when different districts are using different TDD uplink-downlink configuration mode Life up to descending interference, up to uplink interference, descending to uplink interference and descending to descending interference.Wherein, on Row refers to terminal and can receive the transmission of its base station of adjacent cell terminal-pair in this base station of reception transmission downstream signal simultaneously to descending interference Upward signal, that is, UE-to-UE interference；Up base station that uplink interference is referred to is receiving this cell terminal up letter of transmission Number can receive the upward signal of its base station of adjacent cell terminal-pair transmission, i.e. UE-to-eNB interference simultaneously；Descending to up dry Disturb that to refer to base station descending receive that this cell terminal sends that upward signal can receive that adjacent cell base station sends to its terminal simultaneously Signal, i.e. eNB-to-eNB interference；Descending terminal that descending interference is referred to can in this base station of reception transmission downstream signal simultaneously Receive the downstream signal that adjacent cell base station sends to its terminal, i.e. eNB-to-UE interference.
Wherein, up to descending interference and up to uplink interference, compare descending to descending interference and descending to up For interference, because uplink power control Mechanism Primary is relatively low because making terminal transmission power compare base station transmitting power, It is big that the network side hydraulic performance decline that uplink interference leads to is far from that descending interference brings.Meanwhile, descending to descending interference phase Than descending for up interference, because if this cell base station transmission power is higher and the side channel of adjacent cell base station Noise power ratio mechanism works, and the network side hydraulic performance decline that the interference of eNB-to-UE leads to also can be made to be far from It is big that eNB-to-eNB interference brings.
And discuss with communicating to 5G in recent years, Future Data business will be mainly distributed on interior and hot zones, Under this background, the concept of super-intensive network (ultra dense network, referred to as UDN) is arisen at the historic moment.UDN Realize the growth of network capacity by the deployment density increasing low power nodes (Low Power Node, referred to as LPN). But increase with low power nodes density, Distance Shortened between node, up-downgoing interference in LTE-TDD network side is asked Topic is more serious, the especially interference to uplink node for the downlink transfer node, and that is, eNB-to-eNB disturbs with section Point between the great shortening of distance, make adjacent base station terminal uplink Signal to Interference plus Noise Ratio (Signal to Interference and Noise Ratio, Abbreviation SINR) substantially deteriorate, lead to the penalty of node uplink terminal.
Comprehensive above analysis, because base station transmitting power is higher, cell carries out the descending interference of downlink transfer generation relatively Higher, the performance severe exacerbation of other cell uplink transmission terminals can be led to, and increase with base station transmitting power and save Distance Shortened between point, or even cause to cannot be carried out uplink communication.So descending is in above-mentioned four kinds of interference to uplink interference Need most interference coordination technique to adjust the situation of network side performance it is necessary to disturb this interference for eNB-to-eNB The feature of type carries out interference coordination enhancing.
In the related, brought using different TDD ascending-descending subframes forms between for different base station in consolidated network side The coordination technique of up-downgoing interference is mainly：Interaction uplink-downlink configuration information, interference overload indication information etc. between base station, from And uplink-downlink configuration can be coordinated in base station, such as it is adjusted to identical sub-frame formats, it is to avoid by serious eNB-to-eNB Interference；Or, eNB can also adjust its downlink data transmission power, reduces the interference producing in some subframes；Or Person's interfered cell base station to overcome the descending interference of interference source cell base station using higher uplink transmission power.
But the up-downgoing interference problem under coexist for adjacent frequency band and with the heterogeneous networks side of frequency band, correlation technique considers Seldom.Particularly with the R13 stage, in order to fully utilize the TDD frequency spectrum of less use, also for solution frequency Divide duplexing (Frequency Division Duplex, referred to as FDD) frequency spectrum day by day nervous situation, third generation cooperation partner Propose to introduce in TDD with plan (The 3rd Generation Partnership Project, referred to as 3GPP) tissue A kind of new sub-frame formats as shown in table 2, are entirely the sub-frame formats of descending sub frame in radio frames, similar under Row FDD.So introduce that the network side after this brand-new sub-frame formats brings to the network side of existing TDD sub-frame formats is descending To uplink interference, how to coordinate, and when to support the network side of full downlink sub-frame form be macro base station, transmission power be larger, May result in adjacent network side upstream terminal handling capacity to fall sharply to zero, then descending to uplink interference be even more urgent need solve Problem.But in addition it is also necessary to consider how to know other side's sub-frame formats between heterogeneous networks side before solving interference coordination, What knowing how other side's sub-frame formats, for when adjacent base station is sub-frame of uplink, and to be made using interference coordination technique Adjacent frequency band and the support full downlink sub-frame Format network side with frequency band and the network side only supporting existing TDD sub-frame formats Coexist.In the related, there is not preferable settlement mechanism to problem above.
Table 2
For in correlation technique, adjacent frequency band and the support full downlink sub-frame Format network side with frequency band and only support existing The problem of the network side of TDD sub-frame formats how interference coordination, does not also have effective solution.
Content of the invention
The invention provides a kind of processing method and processing device of up-downgoing interference coordination, at least to solve adjacent frequency in correlation technique The network side of band and the support full downlink sub-frame Format network side with frequency band and only support existing TDD sub-frame formats is how The problem of interference coordination.
According to an aspect of the invention, it is provided a kind of processing method of up-downgoing interference coordination, including：
The sub-frame of uplink of transmission and descending sub frame form proportioning between first network side and the second network side, wherein, described the Two network sides are adjacent frequency band or the adjacent networks with frequency band of described first network side, described first network is collateral hold complete under Row sub-frame transmission；
Described first network side is according to the sub-frame of uplink of described second network side and descending sub frame form proportioning, it is determined whether open Open descending to uplink interference avoidance mechanism.
Further, between first network side and the second network side, transmission sub-frame of uplink and descending sub frame form proportioning include：
The user terminal of described first network side scans the different subframes of described second network side base station, described first network side The second network side base station described in user terminal measurement described difference subframes cell reference signals (Cell Reference Signal, referred to as CRS) reception signal intensity (Received Signal Strength Indication, referred to as RSSI), the sub-frame formats of described difference subframe are judged according to described RSSI, or, the user of described first network side is eventually When end decodes Physical Broadcast Channel (Physical Broadcast Channel, the referred to as PBCH) of described second network side Divide duplexing TDD configuration information, judge the sub-frame formats of described difference subframe according to described PBCH TDD configuration information, Described sub-frame formats include：Sub-frame of uplink, and descending sub frame；
The user terminal of described first network side records described second network side to the base station feedback belonging to described user terminal Described difference subframes form.
Further, described according to described RSSI judge described difference subframe sub-frame formats include：
The user terminal of described first network side is according to master sync signal (Primary Synchronization Signal, letter Referred to as PSS) and/or auxiliary synchronous signals (Secondary Synchronization Signal, referred to as SSS) obtain with Synchronization in frequency and symbol for the base station of described second network side, and obtain the physical-layer cell mark of the second network side base station Know (Physical-layer Cell Identity, referred to as PCI)；
Obtain the time-frequency location of the cell reference signals CRS of described second network side base station according to described PCI, wherein, Described CRS pattern time-frequency location and described PCI are to correspond；
The user terminal of described first network side measures the reception of described CRS of described second network side in current time Signal intensity RSSI；
Carry out related operation according to described RSSI and described CRS and obtain signal intensity peak value；
In the case that described signal intensity peak value is more than predetermined threshold value, judge the current son of described second network side base station Frame is descending sub frame；
In the case that described signal intensity peak value is less than predetermined threshold value, judge the current son of described second network side base station Frame is sub-frame of uplink；
Wherein, described predetermined threshold value is configured by high level, is sent to described user by the base station belonging to described user terminal Terminal.
Further, before the user terminal of described first network side scans the different subframes of described second network side base station, Methods described also includes：
Described user terminal receives the high-rise network side announcement information sending, and described network side announcement information is used for indicating described The user terminal of first network side scans the different subframes of described second network side base station.
Further, between first network side and the second network side, transmission sub-frame of uplink and descending sub frame form proportioning include：
The different subframes of the second network side base station described in the base station scans of described first network side, the base of described first network side Stand measure described second network side base station described difference subframes the reception of cell reference signals CRS signal intensity RSSI, judges the sub-frame formats of described difference subframe according to described RSSI, or, the base station solution of described first network side The Physical Broadcast Channel PBCH TDD configuration information of described second network side of code, according to described PBCH TDD Configuration information judges the sub-frame formats of described difference subframe, and described sub-frame formats include：Sub-frame of uplink, and descending sub frame.
Further, before the different subframes of the second network side base station described in the base station scans of described first network side, described Method includes：
The base station of described first network side configures the measurement protection interval of user terminal in described base station, between described measurement protection Every the time period indicating that described user terminal indicates in described measurement protection interval, the base station scans institute of described first network side State the different subframes of the second network side base station.
Further, between first network side and the second network side, transmission sub-frame of uplink and descending sub frame form proportioning include：
Described second network side base is together scanned in the base station of the user terminal of described first network side and described first network side The different subframes stood, the base station of the user terminal of described first network side and described first network side together measures described second Cell reference signals (Cell Reference Signal, the referred to as CRS) of described difference subframe of network side base station connects The signal intensity (Received Signal Strength Indication, referred to as RSSI) received, judges according to described RSSI The sub-frame formats of described difference subframe；
The user terminal of described first network side records described second network side to the base station feedback belonging to described user terminal Described difference subframes form.
Further, the described different subframes scanning described second network side base station include one below：
Scan the corresponding base station of all carrier frequency of described second network side；
Scan the corresponding base station of carrier frequency of described second network side predetermined number, wherein, the carrier frequency of described predetermined number is by height Layer configuration, is sent to described user terminal by the base station belonging to described user terminal.
Further, described first network side determines whether to open and descending uplink interference avoidance mechanism is included：
After the base station of described first network side obtains the sub-frame formats of described second network side, the base station of described first network side Obtain up overload interference instruction (Interference Overload Indicator, the letter that the base station of described second operation sends Referred to as OI), described OI is the interference level of reflection network side frequency domain dimension, and described second network side is to current up The different resource block of subframe records described OI, and the value of described OI includes one below：Strong jamming, common interference, weak Interference；
Adjust the base station transmitting power of described first network side according to described OI.
Further, the up overload interference that the base station of described second operation of the base station acquisition of described first network side sends refers to Show that OI includes：
When described OI universal time coordinated is carved into and reaches, the base station of described second network side of base station acquisition of described first network side is anti- The described OI of feedback.
Further, the described Base Transmitter adjusting described first network side includes：
Adjust the cell reference signals CRS power of the base station of described first network side, wherein,
The sub-frame formats of described first network side are identical with the sub-frame formats of described second network side, continue to use current CRS Transmission power；
The sub-frame formats of described first network side are different with the sub-frame formats of described second network side, at the subframe that do not cross, Continue to use current CRS transmission power；The sub-frame formats of described first network side and the sub-frame formats of described second network side Difference, have described in cross at subframe, the cell reference signals CRS transmission power that the base station of described first network side reduces；
Wherein, the described subframe that crosses refers to that the sub-frame formats of described first network side are descending sub frame and described second network side Sub-frame formats be sub-frame of uplink subframe at.
Further, while adjusting the cell reference signals CRS transmission power of base station of described first network side, Methods described also includes：
At the described subframe that crosses, the cell reference signals CRS transmission power of the base station reduction of described first network side, Meanwhile, during measuring reference signals receiving power (Reference Signal Receiving Power, referred to as RSRP), Cell reference signals CRS transmission power is constant；
At the described subframe that crosses, the cell reference signals CRS transmission power of the base station reduction of described first network side, When the user terminal selecting of described first network side accesses cell, the Reference Signal Received Power RSRP value of measurement is added Deviant, described deviant is to notify described user terminal by high level；
At the described subframe that crosses, during the cell reference signals CRS transmission power of base station reduction of described first network side, The user terminal of described first network side does not carry out accessing the process of cell, and does not measure RSRP.
Further, included according to the base station transmitting power that described OI adjusts described first network side：
In the case that described OI is designated as weak jamming or common interference, the base station reduction of described first network side is described CRS transmission power；
Described OI be designated as strongly disturbing in the case of, described first network side base station be not turned on support full downlink sub-frame lattice Formula is transmitted, and/or, change sub-frame formats.
Further, described modification sub-frame formats include one below：
It is revised as the sub-frame formats of the downlink transfer containing predetermined number；
The sub-frame formats of modification first network side are identical with the sub-frame formats of described second network side.
Further, after the base station modification sub-frame formats of described first network side, methods described includes one below：
The information of described modification sub-frame formats is sent to Centroid, wherein, described Centroid is based on amended son Frame format and former up UL (uplink)/descending DL (downlink) transport load information, determine described first network Up in side-descending UL-DL configuration, the result of described configuration is sent to described first network side by described Centroid Other each nodes；
Described new up-descending UL-DL configuration is sent to each node of described first network side, wherein, described Each node configures and new sub-frame configuration according to up-descending UL-DL of itself, it is determined whether modification sub-frame formats.
According to a further aspect in the invention, a kind of processing meanss of up-downgoing interference coordination are additionally provided, including：
Transport module, for the sub-frame of uplink of transmission and descending sub frame form proportioning between first network side and the second network side, Wherein, described second network side is the adjacent frequency band of described first network side or with frequency band adjacent networks, described first network Collateral full downlink sub-frame of holding transmits；
Opening module, joins according to the sub-frame of uplink of described second network side and descending sub frame form for described first network side Than, it is determined whether open descending to uplink interference avoidance mechanism.
Further, described transport module includes：
First scanning element, the user terminal for described first network side scans the different sub of described second network side base station Frame, the cell reference letter of the described difference subframe of the second network side base station described in the user terminal measurement of described first network side The signal intensity RSSI of the reception of number CRS, judges the sub-frame formats of described difference subframe according to described RSSI, or, The user terminal of described first network side decodes the Physical Broadcast Channel PBCH TDD of described second network side Configuration information, judges the sub-frame formats of described difference subframe, described subframe lattice according to described PBCH TDD configuration information Formula includes：Sub-frame of uplink, and descending sub frame；
Described first scanning element, the user terminal being additionally operable to described first network side is to the base station belonging to described user terminal Feedback records the form of the described difference subframe of described second network side.
Further, described transport module includes：
Second scanning element, for the different subframes of the second network side base station described in the base station scans of described first network side, The cell reference signals CRS of the described difference subframe of the second network side base station described in the base station measurement of described first network side Reception signal intensity RSSI, judge the sub-frame formats of described difference subframe according to described RSSI, or, described the The base station of one network side decodes the Physical Broadcast Channel PBCH TDD configuration information of described second network side, Judge the sub-frame formats of described difference subframe according to described PBCH TDD configuration information, described sub-frame formats include：On Row subframe, and descending sub frame.
Further, described transport module includes：
3rd scanning element, the base station of the user terminal for described first network side and described first network side is together scanned The different subframes of described second network side base station, the base station of the user terminal of described first network side and described first network side Together measure the signal intensity of the reception of cell reference signals CRS of described difference subframe of described second network side base station RSSI, judges the sub-frame formats of described difference subframe according to described RSSI；
Described 3rd scanning element, the user terminal being additionally operable to described first network side is to the base station belonging to described user terminal Feedback records the form of the described difference subframe of described second network side.
Further, described opening module includes：
Adjustment unit, the base station for described first network side obtains after the sub-frame formats of described second network side, and described the The base station of one network side obtains the up overload interference instruction OI that the base station of described second operation sends, and described OI is reflection The interference level of network side frequency domain dimension, described second network side records described to the different resource block of current sub-frame of uplink OI, the value of described OI includes one below：Strong jamming, common interference, weak jamming；According to described OI adjustment The base station transmitting power of first network side.
Further, described adjustment unit includes：
Power adjusts sub-cell, in the case of being designated as weak jamming or common interference in described OI, described first net The base station of network side reduces described CRS transmission power；
Format adjusting sub-cell, for described OI be designated as strongly disturbing in the case of, described first network side base station is not Open and support full downlink sub-frame format transmission, and/or, change sub-frame formats.
By the present invention, the sub-frame of uplink of transmission and descending sub frame form proportioning between first network side and the second network side, Wherein, this second network side is adjacent frequency band or the adjacent networks of this first network side, this first network is collateral hold entirely descending Sub-frame transmission, this first network side is according to this second network side sub-frame of uplink and descending sub frame form proportioning, it is determined whether open Open descending to uplink interference avoidance mechanism, solve adjacent frequency band and the support full downlink sub-frame Format network side with frequency band and Only support the problem of the network side of existing TDD sub-frame formats how interference coordination, effectively achieve under heterogeneous networks side Row is to up interference coordination.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention Schematic description and description be used for explaining the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of flow chart of the processing method of up-downgoing interference coordination according to embodiments of the present invention；
Fig. 2 is a kind of structured flowchart of the processing meanss of up-downgoing interference coordination according to embodiments of the present invention；
Fig. 3 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 1；
Fig. 4 is OI instruction form schematic diagram in correlation technique according to the preferred embodiment of the invention；
Fig. 5 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 2；
Fig. 6 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 3；
Fig. 7 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 4；
Fig. 8 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 5；
Fig. 9 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 6；
Figure 10 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 7；
Figure 11 is the schematic diagram of the centralized coordination different base station sub-frame formats being preferable to carry out example 10 according to the present invention；
Figure 12 is the schematic diagram of the distributed coordination different base station sub-frame formats being preferable to carry out example 11 according to the present invention.
Specific embodiment
To describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings do not conflicted Under condition, the embodiment in the application and the feature in embodiment can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second " Etc. being for distinguishing similar object, without for describing specific order or precedence.
Provide a kind of processing method of up-downgoing interference coordination in the present embodiment, Fig. 1 is according to embodiments of the present invention A kind of flow chart of the processing method of up-downgoing interference coordination, as shown in figure 1, this flow process comprises the steps：
Step S102, the sub-frame of uplink of transmission and descending sub frame form proportioning between first network side and the second network side, Wherein, this second network side is adjacent frequency band or the adjacent networks with frequency band of this first network side, and this first network is collateral Hold full downlink sub-frame transmission；
Step S104, this first network side according to the sub-frame of uplink of this second network side and descending sub frame form proportioning, really Fixed whether open descending to uplink interference avoidance mechanism.
By above-mentioned steps, the sub-frame of uplink of transmission and descending sub frame form proportioning between first network side and the second network side, Wherein, this second network side be this first network side adjacent frequency band or adjacent networks, this first network is collateral hold complete under Row sub-frame transmission, this first network side is according to this sub-frame of uplink and descending sub frame form proportioning, it is determined whether it is descending right to open Uplink interference avoidance mechanism, solves adjacent frequency band and the support full downlink sub-frame Format network side with frequency band and only supports existing Have the problem of the network side of TDD sub-frame formats how interference coordination, effectively achieve different network sides descending to upper The interference coordination of row.
In an embodiment of the present invention, this first network side can be the network side of the first operator, and the second network side is permissible It is the network side of the second operator, and, this first network side and the second network side can include：Operator (Operator), Evolved base station (eNB), cell cooperative entity (Multi-cell/Multicast Coordination Entity, referred to as MCE), Gateway, Evolved UTRAN (Evolved Universal Terrestrial Radio Access Network, Referred to as EUTRAN), operation management and safeguard (Operation Administration and Maintenance, referred to as OAM) manager.
In the present embodiment, transmission sub-frame of uplink and descending sub frame form proportioning bag between first network side and the second network side Include：
The user terminal of this first network side scans the different subframes of this second network side base station, the user of this first network side Terminal measures the signal intensity RSSI of the reception of cell reference signals CRS of this different subframe of this second network side base station, Judge the sub-frame formats of this different subframe according to this RSSI, or, the user terminal of this first network side decode this second The Physical Broadcast Channel PBCH TDD configuration information of network side, sentences according to this PBCH TDD configuration information The sub-frame formats of this different subframe of breaking, this sub-frame formats includes：Sub-frame of uplink, and descending sub frame；
The user terminal of this first network side give this user terminal belonging to base station feedback record this second network side this not Form with subframe.
In the present embodiment, include according to the sub-frame formats that this RSSI judges this different subframe：
The user terminal of this first network side according to master sync signal PSS and/or auxiliary synchronous signals SSS obtain with this second Synchronization in frequency and symbol for the base station of network side, and obtain the physical-layer cell identifier PCI of the second network side base station；
Obtain the time-frequency location of the cell reference signals CRS of this second network side base station, wherein, this CRS according to this PCI Pattern time-frequency location and this PCI are to correspond；
The user terminal of this first network side measures the received signal strength of this CRS of this second network side in current time RSSI；
Carry out related operation according to this RSSI and this CRS and obtain signal intensity peak value；
In the case that this signal intensity peak value is more than predetermined threshold value, judge the present sub-frame of this second network side base station as Descending sub frame；
In the case that this signal intensity peak value is less than predetermined threshold value, judge the present sub-frame of this second network side base station as Sub-frame of uplink；
Wherein, this predetermined threshold value is configured by high level, is sent to this user terminal by the base station belonging to this user terminal.
In the present embodiment, before the user terminal of this first network side scans the different subframes of this second network side base station, This user terminal receives the high-rise network side announcement information sending, and this network side announcement information is used for indicating this first network side User terminal scan the different subframes of this second network side base station.
In the present embodiment, transmission sub-frame of uplink and descending sub frame form proportioning bag between first network side and the second network side Include：
The different subframes of this second network side base station of the base station scans of this first network side, the base station measurement of this first network side The signal intensity RSSI of the reception of cell reference signals CRS of this different subframe of this second network side base station, foundation should RSSI judges the sub-frame formats of this different subframe, or, the base station of this first network side decodes the thing of this second network side Reason broadcast channel PBCH TDD configuration information, judges this difference according to this PBCH TDD configuration information The sub-frame formats of frame, this sub-frame formats includes：Sub-frame of uplink, and descending sub frame.
In the present embodiment, before the different subframes of this second network side base station of the base station scans of this first network side, this The base station of one network side configures the measurement protection interval of user terminal in this base station, and this measurement protection interval indicates this user eventually End is in the time period of this measurement protection interval instruction, the difference of this second network side base station of the base station scans of this first network side Subframe.
In the present embodiment, transmission sub-frame of uplink and descending sub frame form proportioning bag between first network side and the second network side Include：
This second network side base station is together scanned not in the base station of the user terminal of this first network side and this first network side The base station of same subframe, the user terminal of this first network side and this first network side together measures this second network side base station The signal intensity RSSI of the reception of cell reference signals CRS of this different subframe, judges this difference according to this RSSI The sub-frame formats of frame；
The user terminal of this first network side give this user terminal belonging to base station feedback record this second network side this not Form with subframe.
In the present embodiment, the different subframes of this second network side base station of this scanning include one below：
Scan this corresponding base station of all carrier frequency of the second network side；
Scan the corresponding base station of carrier frequency of this second network side predetermined number, wherein, the carrier frequency of this predetermined number is joined by high level Put, this user terminal is sent to by the base station belonging to this user terminal.
In the present embodiment, this first network side determines whether to open and descending uplink interference avoidance mechanism is included：
After the base station of this first network side obtains the sub-frame formats of this second network side, the base station of this first network side obtains should The up overload interference instruction OI that the base station of the second operation sends, this OI is the interference level of reflection network side frequency domain dimension, This second network side records this OI to the different resource block of current sub-frame of uplink, and the value of this OI includes one below： Strong jamming, common interference, weak jamming；
Adjust the base station transmitting power of this first network side according to this OI.
In the present embodiment, the base station of this first network side obtains the up overload interference that base station of this second operation sends and refers to Show that OI includes：
When this OI universal time coordinated is carved into and reaches, the base station of this first network side obtains being somebody's turn to do of the base station feedback of this second network side OI.
In the present embodiment, the base station transmitting power of this first network side of this adjustment includes：Adjust the base of this first network side The cell reference signals CRS power stood
Wherein, the sub-frame formats of this first network side are identical with the sub-frame formats of this second network side, continue to use current CRS Transmission power；
The sub-frame formats of this first network side are different with the sub-frame formats of this second network side, at the subframe that do not cross, continue to use Current CRS transmission power；
The sub-frame formats of this first network side are different with the sub-frame formats of this second network side, have at this subframe that crosses, and this The cell reference signals CRS transmission power that the base station of one network side reduces；
Wherein, this subframe that crosses refers to that the sub-frame formats of this first network side are the subframe of descending sub frame and this second network side Form is at the subframe of sub-frame of uplink.
In the present embodiment, while adjusting the cell reference signals CRS transmission power of base station of this first network side, The method also includes：
At this crosses subframe, the cell reference signals CRS transmission power of the base station reduction of this first network side, meanwhile, During measuring reference signals receiving power RSRP, cell reference signals CRS transmission power is constant；
At this crosses subframe, the cell reference signals CRS transmission power of the base station reduction of this first network side, it is somebody's turn to do When the user terminal selecting of first network side accesses cell, skew is added to the Reference Signal Received Power RSRP value of measurement Value, this deviant is to notify this user terminal by high level；
At this crosses subframe, during the cell reference signals CRS transmission power of base station reduction of this first network side, should The user terminal of first network side does not carry out accessing the process of cell, and does not measure RSRP.
In the present embodiment, included according to the base station transmitting power that this OI adjusts this first network side：
In the case that this OI is designated as weak jamming or common interference, the base station of this first network side reduces this CRS transmitting Power；
This OI be designated as strongly disturbing in the case of, this first network side base station be not turned on support full downlink sub-frame form pass Defeated, and/or, change sub-frame formats.
This modification sub-frame formats includes one below：
It is revised as the sub-frame formats of the downlink transfer containing predetermined number；
The sub-frame formats of modification first network side are identical with the sub-frame formats of this second network side.
In the present embodiment, after the base station modification sub-frame formats of this first network side, the method includes one below：
The information of this modification sub-frame formats is sent to Centroid, wherein, this Centroid is based on amended subframe lattice Formula and the descending DL transport load information of former up UL/, determine up in this first network side-descending UL-DL configuration, This result configuring is sent to other each nodes of this first network side by this Centroid；
This new up-descending UL-DL configuration is sent to each node of this first network side, wherein, this each Node configures and new sub-frame configuration according to up-descending UL-DL of itself, it is determined whether modification sub-frame formats.
Additionally provide a kind of processing meanss of up-downgoing interference coordination in the present embodiment, this device is used for realizing above-mentioned enforcement Example and preferred implementation, had carried out repeating no more of explanation.As used below, term " module " is permissible Realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples is preferably come with software Realize, but hardware, or the realization of the combination of software and hardware is also may and to be contemplated.
Fig. 2 is a kind of structured flowchart of the processing meanss of up-downgoing interference coordination according to embodiments of the present invention, as Fig. 2 institute Show, this device includes：
Transport module 22, joins for the sub-frame of uplink of transmission and descending sub frame form between first network side and the second network side Wherein, this second network side is adjacent frequency band or the adjacent networks with frequency band of this first network side to ratio, this first network Collateral full downlink sub-frame of holding transmits；
Opening module 24, is connected with this transport module 22, up according to this second network side for this first network side Subframe and descending sub frame form proportioning, it is determined whether open descending to uplink interference avoidance mechanism.
By said apparatus, the sub-frame of uplink of transmission and descending sub frame form proportioning between first network side and the second network side, Wherein, this second network side be this first network side adjacent frequency band or adjacent networks, this first network is collateral hold complete under Row sub-frame transmission, this first network side is according to this sub-frame of uplink and descending sub frame form proportioning, it is determined whether it is descending right to open Uplink interference avoidance mechanism, solves adjacent frequency band and the support full downlink sub-frame Format network side with frequency band and only supports existing Have the problem of the network side of TDD sub-frame formats how interference coordination, effectively achieve different network sides descending to upper The interference coordination of row.
In the present embodiment, this transport module 22 includes：
First scanning element, the user terminal for this first network side scans the different subframes of this second network side base station, The cell reference signals CRS's of this different subframe of this second network side base station of the user terminal measurement of this first network side The signal intensity RSSI receiving, judges the sub-frame formats of this different subframe according to this RSSI, or, this first network side User terminal decode the Physical Broadcast Channel PBCH TDD configuration information of this second network side, according to should PBCH TDD configuration information judges the sub-frame formats of this different subframe, and this sub-frame formats includes：Sub-frame of uplink, and under Row subframe；
First scanning element, the user terminal being additionally operable to this first network side records to the base station feedback belonging to this user terminal The form of this different subframe of this second network side.
In the present embodiment, this transport module 22 includes：
Second scanning element, for the different subframes of this second network side base station of base station scans of this first network side, this The letter of the reception of cell reference signals CRS of this different subframe of this second network side base station of the base station measurement of one network side Number intensity RSSI, judges the sub-frame formats of this different subframe according to this RSSI, or, the base station solution of this first network side The Physical Broadcast Channel PBCH TDD configuration information of this second network side of code, joins according to this PBCH TDD Confidence breath judges the sub-frame formats of this different subframe, and this sub-frame formats includes：Sub-frame of uplink, and descending sub frame.
In the present embodiment, this transport module 22 includes：
3rd scanning element, for the user terminal of this first network side and the base station of this first network side together scan this The base station of the different subframes of two network side base stations, the user terminal of this first network side and this first network side together measures this The signal intensity RSSI of the reception of cell reference signals CRS of this different subframe of the second network side base station, foundation should RSSI judges the sub-frame formats of this different subframe；
3rd scanning element, the user terminal being additionally operable to this first network side is surveyed to the base station feedback belonging to this user terminal Obtain the form of this different subframe of this second network side.
In the present embodiment, this opening module 24 includes：
Adjustment unit, the base station for this first network side obtains after the sub-frame formats of this second network side, this first network The base station of side obtains the up overload interference instruction OI that the base station of this second operation sends, and this OI is reflection network side frequency domain The interference level of dimension, this second network side records this OI to the different resource block of current sub-frame of uplink, and this OI takes Value includes one below：Strong jamming, common interference, weak jamming；Sent out according to the base station that this OI adjusts this first network side Penetrate power.
In the present embodiment, this adjustment unit includes：
Power adjusts sub-cell, in the case of being designated as weak jamming or common interference in this OI, this first network side Base station reduce this CRS transmission power；
Format adjusting sub-cell, for this OI be designated as strongly disturbing in the case of, this first network side base station is not turned on Support full downlink sub-frame format transmission, and/or, change sub-frame formats.
With reference to preferred embodiment and embodiment, the present invention is described in detail.
This preferred embodiment solve technical problem be provide a kind of heterogeneous networks side for same frequency band and adjacent frequency band it Between up-downgoing interference coordination processing method and processing device, particularly with introducing different sub-frame formats nets after full downlink sub-frame form Network side coexistence problems are effective.
A kind of descending method to uplink interference coordination that the preferred embodiments of the present invention provide, including：
Ascending-descending subframes form proportioning is transmitted between network side；
Support full downlink sub-frame transmission network side open descending to uplink interference avoidance mechanism.
Further, transmit ascending-descending subframes form proportioning between described network side, including：Network side (1) user is eventually Subframe type, by measuring the RSSI of CRS in different subframes, to be known with received signal strength in end.When present sub-frame work( Rate value is big, and energy is big, then just for descending sub frame, conversely, because UL subframe does not send CRS, present sub-frame Performance number is little, and energy is little, then for sub-frame of uplink.
Refer specifically to：According to existing LTE cell search process, scan the sub-frame formats of adjacent frequency cell.According to PSS (Primary Synchronization Signal, master sync signal) and/or SSS (Secondary Synchronization Signal, auxiliary Synchronizing signal) obtain the synchronization in frequency and symbol with the base station of adjacent frequency network side (2), and know described network The PCI (Physical-layer Cell Identity) of side (2) base station.Because CRS pattern time-frequency location and PCI are one by one Corresponding, therefore also it has been known that the CRS time-frequency location of the interior base station of described network side (2).
Network side (1) user terminal current time measure described network side (2) CRS RSSI, by RSSI value with Known dawn network side (2) base station CRS sequence carries out related operation, if signal intensity peak value is more than door after related operation Limit value, then explanation common-frequency network side (2) base station present sub-frame is DL subframe；If receipt signal is strong after related operation Degree peak value is less than threshold value, then explanation common-frequency network side (2) base station present sub-frame is UL subframe.Described threshold value is High-rise configuration, notifies user terminal by base station.
Further, transmit ascending-descending subframes form proportioning between described network side, can also include：Network side (1) User terminal decodes the PBCH TDD configuration information of adjacent frequency network side (2), thus knowing ascending-descending subframes form, and Report network side.
Wherein, subframe type method, the sub-frame formats of scanning adjacent frequency base station are measured for above two, scanning particle degree can To be to scan be possible to carrier frequency respective cell it is also possible to only a number of carrier frequency respective base station on scan band.Specifically Refer to：
Scan be possible to carrier frequency respective base station, refer to scan on intra-band (band interior) all carrier frequency in addition to this cell Point respective base station.Duplex mode is determined to this all base station, so processes, increase the workload at present networks side base station and answer Miscellaneous degree, but up-downgoing interference problem can be eliminated comprehensively.
A number of carrier frequency respective base station on scanning intra-band, refers to notify according to high-rise, only scans several neighbouring Carrier frequency map network side ascending-descending subframes configuration, this process, largely reduce present networks side base station workload and Complexity, but can only effectively eliminate a certain degree of up-downgoing interference problem and ask it is impossible to solve all coexisting of adjacent frequency base station Topic.
The interior user terminal of described network side (1) can know the sub-frame formats of adjacent frequency base station by two methods, and this Described a little frame format reports this base station.User reports according to existing sub-frame formats indexed mode and records network side (2) Sub-frame formats index to this base station.
Alternatively, described user terminal is notified to go to measure adjacent frequency cell sub-frame formats by the high-rise network side information that sends.
Further, transmit ascending-descending subframes form proportioning between described network side, support full downlink sub-frame Format network side Base station itself can also record adjacent frequency cell sub-frame formats by RSSI mode or decoding PBCH mode, and that is, actuating station is Base station itself.So maximum difference is processing mode with user terminal measurement adjacent frequency cell sub-frame formats：Omit reporting of user Base station process, reduces signaling consumption and feedback delay.But shortcoming is user terminal lose actively judge whether to access complete under The base station ability of row sub-frame formats.
Wherein, user terminal active judges whether that the base station ability accessing full downlink sub-frame form refers specifically to：When base station mistake Judge adjacent frequency base station sub-frame formats, such as UL subframe is judged as DL subframe, or TDD is judged as FDD, from And open support full downlink sub-frame configuration, and if user terminal pass through measurement judge current open full downlink sub-frame configuration, Then adjacent frequency base station can be brought descending to up strong jamming, thus actively refusal accesses the network side of full downlink sub-frame form. I.e. this ability is Additional Protection measure.
Further, when network side base station itself measures the sub-frame formats of adjacent frequency cell, need for user in this base station eventually End configuration measurement protection interval (measurement gap), thus prevent base station end measurement adjacent frequency base within the gap time period During subframe type of standing, user terminal measurement occurs link down possible less than eNB signal intensity.Further, because The cell supporting full downlink sub-frame form, when measuring adjacent frequency base station sub-frame formats, supports the cell of full downlink sub-frame form not Up-downgoing transmitting-receiving can be carried out simultaneously, that is, receiving adjacent frequency base station down transmission PSS/SSS/CRS signal measurement subframe type Downlink data can not be sent to this intra-cell users terminal, consequently, it is possible to occurring this intra-cell users terminal to reselect simultaneously Access cell.
Further, transmit ascending-descending subframes form proportioning between network side, can also be in present networks side user terminal and Base station itself all measures adjacent frequency cell sub-frame formats.Measuring method is constant, is also RSSI and PSS/SSS/CRS mode. This mode, advantage is：When base station side measurement adjacent frequency cell sub-frame formats are wrong, erroneous trigger opens full downlink sub-frame lattice During formula, user terminal can also be after itself measurement adjacent frequency base station sub-frame formats, and the instruction carrying out automatic decision base station side is No mistake, when finding that adjacent frequency base station is DL subframe or interference is very big, then refusal accesses full downlink sub-frame form, plays double Protect again.But shortcoming is also apparent it is simply that increasing signaling consumption and the feedback delay of user feedback.
When support full downlink sub-frame network side have learned that adjacent frequency base station sub-frame formats after it is considered to whether open descending right Uplink interference avoidance mechanism.
Further, interference avoidance mechanism can be, transships instruction (UL Interference Overload according to uplink interference Indicator, referred to as OI), the transmission power of adjustment full downlink sub-frame Format network side.LTE existing protocol (3GPP TS36.423 the OI in) indicates the interference level for reflecting network side frequency domain dimension, first interfered cell be can use Resource is divided into N number of Resource Block (Resource Block, referred to as RB), indexes as RB 0, RB1 ..., RB N-1； Then it is corresponding frequency domain position for RB index, generate OI instruction.Wherein, the value of OI instruction can be " capable and experienced Disturb (high interference) ", " common interference (medium interference) " or " weak jamming (low interference) ", The interference interference that is moderate or being subject to represent that the interference being subject to is larger respectively, being subject to is less；The OI instruction generating is passed through X2 interface notifies to interference base station so that interference base station can implement interference coordination operation for eNB-to-eNB interference.
Further, indicated according to OI, support that the network side base station adjustment transmission power of full downlink sub-frame transmission includes：
The uplink interference level of frequency domain dimension is fed back to interfered cell by adjacent frequency or the disturbed network side base station of same frequency, that is, support The cell of full downlink sub-frame type.
Wherein, adjacent frequency or the disturbed network side base station feedback OI instruction of same frequency are semi-static modes, that is, in uplink interference mistake When carrying the arrival of instruction interference coordination moment, interfered base station is indicated to interference base station by feeding back OI.
Alternatively, pass through to eat dishes without rice or wine an OI indication feedback to interference base station in disturbed network side base station.
Interference base station, that is, after supporting that full downlink sub-frame type of base station receives OI feedback, adjust its transmission power.
Further, adjustment transmission power refer in particular to adjust interference base station CRS (Cell Reference Siganal, specifically Refer to cell reference signals) power, and do not adjust the data transmission power of this base station.By adjusting CRS power, protect Demonstrate,prove this base station data transmission power, thus reduce the downlink transfer that the descending interference to interference base station ensures this base station simultaneously Performance.
Further, described adjustment transmitting CRS power can include two kinds of situations：
Situation one：For different subframes, different capacity is had to arrange.When the network side of different sub-frame formats is in the son that do not cross At frame, continue to use former CRS transmission power, do not adjust the CRS transmission power of interference base station；
Further, the subframe that do not cross refers to, and in current time, heterogeneous networks side subframe type is identical, is all DL Subframe or be all UL subframe, thus not produce up-downgoing interference problem.
Situation two：Having at the subframe that crosses, interference base station reduces this cell CRS transmission power, to be reduced descending with this To uplink interference level.
Further, the subframe that crosses refers to, and in current time, heterogeneous networks side subframe type is different, i.e. interfered base station Frame type be UL subframe, thus can produce descending to uplink interference.
Interference base station because some moment reduce CRS transmission power, thus lead to different districts coverage so that This community user terminal selects Serving cell to produce cell contraction problem when accessing according to the RSRP reducing, in order to avoid upper State problem, interference base station carries out RSRP metering system based on CRS can be had:Three kinds of modes, these three modes refer specifically to：
Mode 1：At the subframe that crosses, this base station CRS reduces transmission power, carries out downlink transfer；But measurement RSRP Still continue to use former CRS transmission power.Thus not producing cell to shrink problem.
Mode 2：At the subframe that crosses, user terminal calculates RSRP according to the CRS that this base station reduces transmission power, but When this user terminal selection cell is accessed, offset bias is added on this RSRP value.Described offset bias by High-rise notice user terminal.
Mode 3：At the subframe that crosses, this base station does not carry out carrying out RSRP based on CRS being measured as user terminal selecting connecing Enter cell process.
After described interference base station receives OI feedback, adjust its transmission power, including：
When interfered base station feedback OI is designated as " low-medium interference ", interference base station reduces CRS transmitting Power, thus reduce descending to uplink interference.
When interfered base station feedback OI is designated as " high interference ", then interference base station is not turned on supporting descending son entirely Frame format is transmitted, and/or modification sub-frame formats.
Further, modification sub-frame formats can be revised as the sub-frame formats of less DL transmission, but can make this base station Downlink transfer performance is drastically descending and can not thoroughly eliminate up-downgoing interference.
Further, modification sub-frame formats can be revised as and same frequency or the identical sub-frame formats of adjacent frequency interfered base station. This mode is more less to existing standard change than self adaptation reduction transmission power, and interference can be completely eliminated.
After supporting the interference base station modification ascending-descending subframes Format Type of full downlink sub-frame type in described network side (2), Impact can be produced on the base station of other TDD sub-frame formats in present networks side, because after modification sub-frame formats, present networks side Oneself subframe type also will be coordinated after being directed to described base station modification subframe type in other base stations interior.For different in present networks side How base station coordinates TDD up-downgoing reconfigures, and can include centralized and distributed two classes：
Centralized refer to：The base station supporting full downlink sub-frame form is sent to Centroid by changing sub-frame formats information, by Centroid is based on amended sub-frame formats and former UL/DL traffic load information, determines UL-DL in present networks side Configuration, and configuration result is sent to each cell Node.Which, it needs to be determined that Centroid, to be assisted by Centroid Adjust or determine UL-DL configuration, and feed back to other each nodes.
Distributed refer to：In present networks side, the cell Node of full downlink sub-frame form passes through to eat dishes without rice or wine to notify other cells, tendency Using new UL-DL configuration, then, other cell Node configure according to the UL-DL of itself former employing and receive The new sub-frame configuration holding the transmission of full downlink sub-frame cell comprehensively to determine whether to change subframe type.
Preferred embodiment below is to launch for two heterogeneous networks side up-downgoing coexistence problems, wherein base station in network side 1 It is to support that the new subframe type that TDD network side sub-frame formats are entirely descending also supports existing tradition sub-frame formats；Network In side 2, base station refers to only support TDD network side existing tradition sub-frame formats.Assume that network side 2 is deployed good Or have prioritized deployment power TDD DL/UL type, network side 1 be operated in the TDD that will dispose with frequency for the network side 2 Full downlink sub-frame type.
Preferred embodiment 1
Fig. 3 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 1, as shown in figure 3, Including：
In step S301, network side 1, user terminal is according to PSS (Primary Synchronization Signal, main synchronization Signal) and/or SSS (Secondary Synchronization Signal, auxiliary synchronous signals) acquirement and adjacent frequency network side 2 Synchronization in frequency and symbol for the base station.
Detailed process is：The base station of described user terminal foundation PSS and/or SSS acquirement and adjacent frequency network side 2 is in frequency With the synchronization on symbol, and know PCI (Physical-layer Cell Identity, the physical layer of described network side 2 base station Cell ID).
In step S302, network side 1, user terminal knows the TDD subframe of network side 2 according to RSSI performance number size Form.
Detailed process is：Because CRS pattern time-frequency location and PCI are one-to-one, therefore know that PCI also just knows The CRS time-frequency location of base station in the described network side 2 in road.
Described network side 1 user terminal measures the CRS RSSI of described network side 2 in current time, by RSSI value and Aware networks side 2 base station CRS sequence carries out related operation, if signal intensity peak value is more than threshold value after related operation, Then explanation common-frequency network side 2 base station present sub-frame is DL subframe；If receipt signal intensity peak is less than after related operation Threshold value, then explanation common-frequency network side 2 base station present sub-frame is UL subframe.
Described threshold value is high-rise configuration, notifies user terminal by base station.
The TDD sub-frame formats that step S303, described network side 1 user terminal feedback record network side 2 index to base station.
According to the description of above-mentioned S301～S303 concrete steps, described network side 1 base station obtains common-frequency network side 2TDD After frame format, corresponding interference coordination mechanism can be opened according to interference strength size.
Step S304, described network side 2 record OI instruction in current UL subframe difference RB, and Fig. 4 is according to this OI instruction form schematic diagram in the correlation technique of bright preferred embodiment, as shown in figure 4, be directed to RB 0, RB 1 ..., RB N-1 index generates OI instruction.The value of wherein OI instruction can be " strong jamming ", " common interference " or " weak jamming ".
Step S305, when uplink interference transship instruction the interference coordination moment reach when, described network side 1 base station has been obtained Take the OI instruction that described network side 2 base station sends, and according to the interference strength obtaining, open the disturbance coordination system.
It is assumed that the OI that described network side 2 base station notifies is designated as " low-medium interference ", then interference base station I.e. network side 1 base station reduce CRS transmission power, thus reduce descending to uplink interference.
Step S306, at the subframe that crosses, that is, network side 1 be DL subframe, network side 2 be UL subframe；Network side 1 is reduced CRS transmission power when sending downlink data.But still continue to use former CRS transmission power when measuring RSRP, Thus not affecting user terminal selecting in this base station to access cell process.
Preferred embodiment 2
Fig. 5 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 2, as shown in figure 5, Including step S501～S506.Compared with preferred embodiment 1, step S502, S506 is different from step S302, S306, Its difference is, in step S502, in network side 1, user terminal, according to decoding network side 2PBCH, obtains with frequency net The TDD subframe type of network side 2 base station.
Detailed process is：The PBCH of user terminal decoding network side 2 in network side 1, obtains network side information SIB1 This base station TDD uplink-downlink configuration form that (System Information Blocks) carries.Wherein, the transmission of SIB1 Cycle is 80ms, and in order to ensure being properly received of Cell Edge User, can be repeated 3 times in a transmission cycle Identical is transmitted.
In step S506, at the subframe that crosses, that is, network side 1 is DL subframe, and network side 2 is UL subframe；Ben Ji Reduction CRS transmission power of standing carries out downlink transfer simultaneously, calculates RSRP also based on this performance number, but user terminal receives Offset bias can be added to RSRP value, thus to judge accessed which cell according to RSRP+offset.Described offset Bias is high-rise configuration, notifies user terminal by base station.
Preferred embodiment 3
Fig. 6 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 3, as shown in fig. 6, Including step S601～S606.Compared with preferred embodiment, step S601～S605 is identical with step S301～S305, Its difference is, in step S606, at the subframe that crosses, that is, network side 1 is DL subframe, and network side 2 is UL Subframe；Network side 1 reduces CRS transmission power and carries out downlink transfer, can reduce the UL transmission interference to network side 2, But for user terminal in present networks side 1 when CRS reduces transmission power, do not carry out RSRP measurement, do not enter Row cell selection procedure.Thus avoiding this community user terminal to select Serving cell to produce when accessing according to the RSRP reducing Cell shrink problem.
Preferred embodiment 4
Fig. 7 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 4, as shown in fig. 7, Including step S701～S706.Step S701～S704 method is identical with preferred embodiment 1～3, and its difference is, step In rapid S705, when uplink interference is transshipped the instruction interference coordination moment and reached, described network side 1 base station has obtained institute The OI stating the transmission of network side 2 base station indicates it is assumed that OI is designated as " high interference ", then interference base station is Network side 1 base station will be not turned on full downlink sub-frame format transmission, can be according to actually downlink business ratio and interfered base station Subframe type, considers using which kind of ascending-descending subframes configuration.
Step S706, when current downlink business proportion is higher, configures 1 or 2 using sub-frame formats, descending sub frame accounts for one Wireless sub-frame half, that is, meet downlink traffic demand it is also possible to effective reduction disturbs to adjacent frequency.But this method is not Up-downgoing interference can thoroughly be eliminated.
Preferred embodiment 5
Fig. 8 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 5, as shown in figure 8, Including step S801～S806.Step S801～S805 method is identical with preferred embodiment 4, and its difference is, step In S806, in network side 1, base station is very serious to network side 2 base station uplink interference, already leads to uplink and handles up Amount falls sharply to zero, thus disturbing in weight it is intended to reduce in this base station up-downgoing business proportion of measurement with to same frequency base station Interference.I.e. modification sub-frame formats are identical sub-frame formats with common-frequency network side 2 base station.This mode is compared adaptive Should reduce CRS transmission power to 3GPP existing standard change less, and can be completely eliminated descending to uplink interference.
Preferred embodiment 6
In preferred embodiment 6, Measurement Network side 2 sub-frame formats subject of implementation and above preferred embodiment in network side 1 In 1～5, maximum difference is, in network side 1, Measurement Network side 2 sub-frame formats are gone in base station, rather than user terminal.
Fig. 9 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 6, as shown in figure 9, Step S901～S902 is identical with the step S301～S302 measuring method of preferred embodiment respectively, but subject of implementation by with Family terminal becomes base station itself.And omit user terminal in step S303 and report the sub-frame formats of adjacent frequency base station to this base Stand.Because network side 1 base station has measured knows adjacent frequency base station sub-frame formats.
Increase step S903, when network side base station itself measures the sub-frame formats of adjacent frequency cell, need in this base station User terminal configures measurement gap.In this gap stage, base station measurement adjacent frequency base station sub-frame formats simultaneously, Ben Ji In standing, user terminal will not occur again to access other cells possibility.Described measurement gap is configured by high level.
Other disturbance coordination methods are identical with above-mentioned enforcement example.
Preferred embodiment 7
In preferred embodiment 7, Measurement Network side 2 sub-frame formats subject of implementation and above preferred embodiment in network side 1 In 1～7, maximum difference is, in network side 1, base station and user terminal all go Measurement Network side 2 sub-frame formats, rather than User terminal or the independent side in base station go to measure.
Figure 10 is the descending schematic flow sheet to uplink interference coordination according to the preferred embodiment of the present invention 7, as Figure 10 institute Show, including step S1001～S1005, user terminal and base station all measure adjacent frequency base station sub-frame formats.Thus ensureing to work as base Standing, side measurement adjacent frequency cell sub-frame formats are wrong, and when erroneous trigger opens full downlink sub-frame form, user terminal can also lead to After crossing itself measurement adjacent frequency base station sub-frame formats, carry out the instruction whether mistake of automatic decision base station side, when finding adjacent frequency base station It is DL subframe or interference is very big, then refusal accesses full downlink sub-frame form, plays duplicate protection.But shortcoming is also aobvious And be clear to it is simply that increasing signaling consumption and the feedback delay of user feedback.
Preferred embodiment 8
Preferred embodiment 8 is directed to above preferred embodiment 1～7, supports full downlink sub-frame Formats User terminal in network side 1 And/or in base station measurement intra-band during the sub-frame formats of base station, how on earth scan base station number in intra-band, Consider scanning particle degree size.
It is assumed that 100MHz intra-band size, have 10 with frequency base station including this base station, each base station is 10MHz Bandwidth.The corresponding base of be possible to carrier frequency on user terminal and/or intra-band described in base station scans so in network side 1 Stand sub-frame formats；Scan 9 carrier frequency respective base station (in addition to this base station).
This scanning particle degree can eliminate up-downgoing interference problem comprehensively, but can increase present networks side workload and complexity.
Preferred embodiment 9
The scanning intra-band base station granularity method of preferred embodiment 9 and the difference of preferred embodiment 8 are：Only sweep Retouch a number of carrier frequency respective base station on intra-band.In network side 1, user terminal and/or base station notify according to high-rise, Only scan the ascending-descending subframes configuration of for example adjacent 3 carrier frequency respective base station.This process, largely reduces Home Network Network side workload and complexity, but can only effectively eliminate a certain degree of up-downgoing interference problem it is impossible to solve all adjacent frequency The coexistence problems of base station.
Preferred embodiment 10
After supporting the interference base station eNB1 modification ascending-descending subframes Format Type of full downlink sub-frame form in network side 1, Figure 11 is the schematic diagram of the centralized coordination different base station sub-frame formats being preferable to carry out example 10 according to the present invention, such as Figure 11 Shown, other base station sub-frame formats in present networks side are coordinated by centralized fashion and is reconfigured.After eNB1 will change Sub-frame formats information is sent to Centroid, is based on the amended sub-frame formats of eNB1 and UL/DL by Centroid Traffic load information, determines the UL-DL configuration of eNB1, eNB2 and eNB3 in present networks side, and by configuration result It is sent to each cell Node.Which, it needs to be determined that Centroid, to be coordinated by Centroid or to determine that UL-DL joins Put, and feed back to other each nodes.This implements in example, by node centered on eNB2.
Preferred embodiment 11
After supporting the interference base station eNB1 modification ascending-descending subframes Format Type of full downlink sub-frame form in network side 1, Figure 12 is the schematic diagram of the distributed coordination different base station sub-frame formats being preferable to carry out example 11 according to the present invention, such as Figure 12 Shown, other base station sub-frame formats in present networks side are coordinated by distributed way and is reconfigured.After eNB1 will change Sub-frame formats information is notified to eNB2 and eNB3 by X2 interface.And in the front interactive moment, eNB1 has learned that ENB2 and eNB3 currently uses sub-frame formats.ENB2 and eNB3 according to the UL-DL configuration itself adopting and receives The UL-DL configuration that eNB3 tendency adopts carrys out the comprehensive UL-DL configuration determining final employing.
Preferred embodiment 12
In above-mentioned enforcement example, adjacent frequency base station can also be the base station supporting full downlink sub-frame type, be not limited to simply make With traditional TDD subframe type.Network side 1 is except according to above-mentioned PSS/SSS+RSSI or PSS/SSS+PBCH two Plant outside the base station subframe type of method Measurement Network side 2, alternatively, in a wireless sub-frame of a Measurement Network side 2 The subframe type of subframe numbers #1, as shown in table 1, if recording #1 work song frame is D subframe, then be exactly under support entirely The base station of row subframe type, then between network side 1 and network side 2, base station does not need to coordinate inter base station interference, if recorded #1 work song frame is S subframe, then be exactly the base station of traditional subframe type, then need to open different dry according to interference size Disturb coordination approach.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-described embodiment Method can realize by the mode of software plus necessary general hardware platform naturally it is also possible to pass through hardware, but a lot In the case of the former is more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing Have what technology contributed partly can embody in the form of software product, this computer software product is stored in one In storage medium (as ROM/RAM, magnetic disc, CD), including some instructions with so that a station terminal equipment (can To be mobile phone, computer, server, or the network equipment etc.) method described in execution each embodiment of the present invention.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can To be arranged to store the program code of the method and step for executing above-described embodiment：
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), portable hard drive, Magnetic disc or CD etc. are various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor executes above-described embodiment according to the program code of storage in storage medium Method and step.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general Realizing, they can concentrate on single computing device computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to by they Storage to be executed by computing device in the storage device, and in some cases, can be to hold different from order herein The shown or described step of row, or they are fabricated to respectively each integrated circuit modules, or will be many in them Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware Combine with software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the technology of this area For personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any Modification, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (21)

1. a kind of processing method of up-downgoing interference coordination is it is characterised in that include：
The sub-frame of uplink of transmission and descending sub frame form proportioning between first network side and the second network side, wherein, institute State the adjacent frequency band that the second network side is described first network side or the adjacent networks with frequency band, described first network side Support full downlink sub-frame transmission；
Described first network side according to the sub-frame of uplink of described second network side and descending sub frame form proportioning, determination is No open descending to uplink interference avoidance mechanism.
2. method according to claim 1 is it is characterised in that transmit up between first network side and the second network side Subframe and descending sub frame form proportioning include：
The user terminal of described first network side scans the different subframes of described second network side base station, described first net The cell reference signals CRS's of described difference subframe of the second network side base station described in the user terminal measurement of network side The signal intensity RSSI receiving, judges the sub-frame formats of described different subframe according to described RSSI, or, described the The user terminal of one network side decodes the Physical Broadcast Channel PBCH TDD configuration of described second network side Information, judges the sub-frame formats of described difference subframe, described sub-frame formats according to described PBCH TDD configuration information Including：Sub-frame of uplink, and descending sub frame；
The user terminal of described first network side records described second net to the base station feedback belonging to described user terminal The form of the described difference subframe of network side.
3. method according to claim 2 is it is characterised in that described judge described difference subframe according to described RSSI Sub-frame formats include：
The user terminal of described first network side according to master sync signal PSS and/or auxiliary synchronous signals SSS obtain with Synchronization in frequency and symbol for the base station of described second network side, and it is little to obtain the physical layer of the second network side base station Area identifies PCI；
Obtain the time-frequency location of the cell reference signals CRS of described second network side base station according to described PCI, wherein, Described CRS pattern time-frequency location and described PCI are to correspond；
The user terminal of described first network side measures connecing of the described CRS of described second network side in current time The signal intensity RSSI receiving；
Carry out related operation according to described RSSI and described CRS and obtain signal intensity peak value；
In the case that described signal intensity peak value is more than predetermined threshold value, judge working as of described second network side base station Front subframe is descending sub frame；
In the case that described signal intensity peak value is less than predetermined threshold value, judge working as of described second network side base station Front subframe is sub-frame of uplink；
Wherein, described predetermined threshold value is configured by high level, is sent to described by the base station belonging to described user terminal User terminal.
4. method according to claim 2 is it is characterised in that the user terminal scanning described the of described first network side Before the different subframes of two network side base stations, methods described also includes：
Described user terminal receives the high-rise network side announcement information sending, and described network side announcement information is used for indicating The user terminal of described first network side scans the different subframes of described second network side base station.
5. method according to claim 1 is it is characterised in that transmit up between first network side and the second network side Subframe and descending sub frame form proportioning include：
The different subframes of the second network side base station described in the base station scans of described first network side, described first network side The second network side base station described in base station measurement described difference subframes the reception of cell reference signals CRS letter Number intensity RSSI, judges the sub-frame formats of described difference subframe according to described RSSI, or, described first network side Base station decode the Physical Broadcast Channel PBCH TDD configuration information of described second network side, according to institute State the sub-frame formats that PBCH TDD configuration information judges described difference subframe, described sub-frame formats include：Up son Frame, and descending sub frame.
6. method according to claim 5 is it is characterised in that the second net described in the base station scans of described first network side Before the different subframes at network side base station, methods described includes：
The base station of described first network side configures the measurement protection interval of user terminal in described base station, and described measurement is protected Shield interval indicates the time period in described measurement protection interval instruction for the described user terminal, the base of described first network side Stand and scan the different subframes of described second network side base station.
7. method according to claim 1 is it is characterised in that transmit up between first network side and the second network side Subframe and descending sub frame form proportioning include：
Described second network is together scanned in the base station of the user terminal of described first network side and described first network side The different subframes at side base station, the base station of the user terminal of described first network side and described first network side together measures The signal intensity RSSI of the reception of cell reference signals CRS of described difference subframe of described second network side base station, Judge the sub-frame formats of described difference subframe according to described RSSI；
The user terminal of described first network side records described second net to the base station feedback belonging to described user terminal The form of the described difference subframe of network side.
8. the method according to claim 2 is to any one of claim 7 is it is characterised in that described scanning described second The different subframes of network side base station include one below：
Scan the corresponding base station of all carrier frequency of described second network side；
Scan the corresponding base station of carrier frequency of described second network side predetermined number, wherein, the carrier frequency of described predetermined number Configured by high level, described user terminal is sent to by the base station belonging to described user terminal.
9. method according to claim 1 it is characterised in that described first network side determine whether to open descending to upper Row interference avoidance mechanism includes：
After the base station of described first network side obtains the sub-frame formats of described second network side, described first network side Base station obtains the up overload interference instruction OI that the base station of described second operation sends, and described OI is reflection network side The interference level of frequency domain dimension, described second network side records described to the different resource block of current sub-frame of uplink OI, the value of described OI includes one below：Strong jamming, common interference, weak jamming；
Adjust the base station transmitting power of described first network side according to described OI.
10. method according to claim 9 is it is characterised in that the base station of described first network side obtains described second net The up overload interference instruction OI that the base station of network side sends includes：
When described OI universal time coordinated is carved into and reaches, the base station of described first network side obtains the base of described second network side The described OI of feedback of standing.
11. methods according to claim 9 are it is characterised in that the Base Transmitter work(of described adjustment described first network side Rate includes：
Adjust the cell reference signals CRS power of the base station of described first network side,
Wherein, the sub-frame formats of described first network side are identical with the sub-frame formats of described second network side, continue to use and work as Front CRS transmission power；
The sub-frame formats of described first network side are different with the sub-frame formats of described second network side, and do not cross subframe Place, continues to use current CRS transmission power；The sub-frame formats of described first network side and the son of described second network side Frame format is different, have described in cross at subframe, the base station of described first network side reduces cell reference signals CRS and sends out Penetrate power；
Wherein, the described subframe that crosses refers to that the sub-frame formats of described first network side are descending sub frame and described second net The sub-frame formats of network side are at the subframe of sub-frame of uplink.
12. methods according to claim 11 it is characterised in that adjust described first network side base station cell While reference signal CRS transmission power, methods described also includes：
At the described subframe that crosses, the base station of described first network side reduces cell reference signals CRS transmission power, Meanwhile, during measuring reference signals receiving power RSRP, cell reference signals CRS transmission power is constant；
At the described subframe that crosses, the cell reference signals CRS transmission power of the base station reduction of described first network side, Reference Signal Received Power RSRP value when the user terminal selecting of described first network side accesses cell, to measurement Plus deviant, described deviant is to notify described user terminal by high level；
At the described subframe that crosses, when the base station of described first network side reduces cell reference signals CRS transmission power, The user terminal of described first network side does not carry out accessing the process of cell, and does not measure RSRP.
13. methods according to claim 9 it is characterised in that adjust the base of described first network side according to described OI Transmission power of standing includes：
In the case that described OI is designated as weak jamming or common interference, the base station of described first network side reduces institute State CRS transmission power；
Described OI be designated as strongly disturbing in the case of, described first network side base station is not turned on supporting descending son entirely Frame format is transmitted, and/or, change sub-frame formats.
14. methods according to claim 13 are it is characterised in that described modification sub-frame formats include one below：
It is revised as the sub-frame formats of the downlink transfer containing predetermined number；
The sub-frame formats of modification first network side are identical with the sub-frame formats of described second network side.
15. methods according to claim 14 are it is characterised in that sub-frame formats are changed in the base station of described first network side Afterwards, methods described includes one below：
The information of described modification sub-frame formats is sent to Centroid, wherein, after described Centroid is based on modification Sub-frame formats and the descending DL transport load information of former up UL/, determine up-descending in described first network side UL-DL configures, and the result of described configuration is sent to other each sections of described first network side by described Centroid Point；
Described new up-descending UL-DL configuration is sent to each node of described first network side, wherein, Each node described configures and new sub-frame configuration according to up-descending UL-DL of itself, it is determined whether modification Frame format.
A kind of 16. processing meanss of up-downgoing interference coordination are it is characterised in that include：
Transport module, for the sub-frame of uplink of transmission and descending sub frame form between first network side and the second network side Proportioning, wherein, described second network side is adjacent frequency band or the adjacent networks with frequency band of described first network side, Described first network is collateral to hold full downlink sub-frame transmission；
Opening module, for described first network side according to the sub-frame of uplink of described second network side and descending sub frame lattice Formula proportioning, it is determined whether open descending to uplink interference avoidance mechanism.
17. devices according to claim 16 are it is characterised in that described transport module includes：
First scanning element, the user terminal for described first network side scans described second network side base station not Same subframe, the second network side base station described in the user terminal measurement of described first network side described difference subframes little The signal intensity RSSI of the reception of area's reference signal CRS, judges the subframe lattice of described difference subframe according to described RSSI Formula, or, the user terminal of described first network side decodes the Physical Broadcast Channel PBCH of described second network side TDD configuration information, judges the subframe lattice of described difference subframe according to described PBCH TDD configuration information Formula, described sub-frame formats include：Sub-frame of uplink, and descending sub frame；
Described first scanning element, the user terminal being additionally operable to described first network side is to belonging to described user terminal Base station feedback records the form of the described difference subframe of described second network side.
18. devices according to claim 16 are it is characterised in that described transport module includes：
Second scanning element, for the different sons of the second network side base station described in the base station scans of described first network side Frame, the cell reference letter of the described difference subframe of the second network side base station described in the base station measurement of described first network side The signal intensity RSSI of the reception of number CRS, judges the sub-frame formats of described difference subframe according to described RSSI, or, The Physical Broadcast Channel PBCH TDD that the base station of described first network side decodes described second network side is joined Confidence ceases, and judges the sub-frame formats of described difference subframe, described subframe lattice according to described PBCH TDD configuration information Formula includes：Sub-frame of uplink, and descending sub frame.
19. devices according to claim 16 are it is characterised in that described transport module includes：
3rd scanning element, the base station of the user terminal for described first network side and described first network side is together Scan the different subframes of described second network side base station, the user terminal of described first network side and described first network The base station of side together measures connecing of the cell reference signals CRS of described difference subframe of described second network side base station The signal intensity RSSI receiving, judges the sub-frame formats of described difference subframe according to described RSSI；
Described 3rd scanning element, the user terminal being additionally operable to described first network side is to belonging to described user terminal Base station feedback records the form of the described difference subframe of described second network side.
20. devices according to claim 16 are it is characterised in that described opening module includes：
Adjustment unit, the base station for described first network side obtains after the sub-frame formats of described second network side, institute The base station stating first network side obtains the up overload interference instruction OI that the base station of described second operation sends, described OI is the interference level of reflection network side frequency domain dimension, the difference money to current sub-frame of uplink for described second network side Source block records described OI, and the value of described OI includes one below：Strong jamming, common interference, weak jamming；Root Adjust the base station transmitting power of described first network side according to described OI.
21. devices according to claim 20 are it is characterised in that described adjustment unit includes：
Power adjusts sub-cell, for described OI be designated as weak jamming or common disturb in the case of, described the The base station of one network side reduces described CRS transmission power；
Format adjusting sub-cell, for described OI be designated as strongly disturbing in the case of, described first network side base Station is not turned on supporting full downlink sub-frame format transmission, and/or, change sub-frame formats.
CN201510557089.6A 2015-09-02 2015-09-02 The processing method and processing device of up-downgoing interference coordination Withdrawn CN106487472A (en)

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