CN104333902B

CN104333902B - Method of data synchronization, synchronization system, the equipment and terminal with base station functions

Info

Publication number: CN104333902B
Application number: CN201410625988.0A
Authority: CN
Inventors: 李明菊; 朱亚军; 雷艺学; 张云飞
Original assignee: Dongguan Yulong Telecommunication Technology Co Ltd
Current assignee: Dongguan Yulong Telecommunication Technology Co Ltd
Priority date: 2014-11-06
Filing date: 2014-11-06
Publication date: 2018-05-15
Anticipated expiration: 2034-11-06
Also published as: CN104333902A

Abstract

The present invention proposes a kind of a kind of a kind of a kind of method of data synchronization, LTE system data synchronous system, equipment with base station functions and terminal when unauthorized frequency range using TDD mode work of LTE system when unauthorized frequency range is using TDD mode work, method of data synchronization of the LTE system when unauthorized frequency range is worked using TDD mode, including：When the down channel for being used to be periodically detected unauthorized frequency range being arranged in the frame structure of TDD mode, whether idle down channel detects subframe, when detecting that down channel is busy in any detection cycle, the first reference signal is sent, so that the equipment with base station functions keeps data synchronous with the terminal in current area where the equipment with base station functions.Pass through technical scheme so that LTE system is using on the premise of LBT testing mechanisms, it can be ensured that the equipment with base station functions is synchronous with terminal holding data, makes there is the equipment of base station functions to avoid with terminal out of touch.

Description

Method of data synchronization, synchronization system, the equipment and terminal with base station functions

Technical field

It is double using the time-division in unauthorized frequency range in particular to a kind of LTE system the present invention relates to field of communication technology The number of method of data synchronization, a kind of LTE system when unauthorized frequency range is worked using TDD mode when work pattern works According to synchronization system, a kind of equipment with base station functions and a kind of terminal.

Background technology

With the sharp increase of message volume, the network that the mandate frequency spectrum of 3GPP is increasingly not enough to provide higher holds Amount.In order to further improve the utilization rate of frequency spectrum resource, 3GPP just discusses how unauthorized is used with the help of frequency spectrum is authorized Frequency spectrum, such as 2.4GHz and 5GHz frequency ranges.These unlicensed spectrums are presently mainly that the systems such as Wi-Fi, bluetooth, radar, medical treatment exist Use.

Under normal conditions, for authorized frequency range design access technology, as LTE (Long Term Evolution, for a long time Evolution) be not suitable for using in unauthorized frequency range, because this kind of access technologies of LTE want spectrum efficiency and user experience optimization Ask very high.However, carrier aggregation (Carrier Aggregation, CA) function allows and LTE is deployed in unauthorized frequency range is changed into May.3GPP proposes the concept of LAA (access of LTE Assisted Access, LTE auxiliary), and the side of frequency spectrum is authorized by LTE Help to use unlicensed spectrum.And unlicensed spectrum can have two kinds of working methods, one kind be supplement downlink (SDL, Supplemental Downlink), i.e. only downlink transfer subframe；Another kind is tdd mode, both comprising downlink subframe, uplink Subframe.It can only be used (as shown in Figure 1) by carrier aggregation technology to supplement downlink such case.And tdd mode is except can be with By carrier aggregation technology outside, it can also be used by DC (Dual Connectivity, doubly-linked lead to), can also be independent Use.

Compared to Wi-Fi systems, the LTE system for being operated in unauthorized frequency range has the ability to provide the spectrum efficiency of higher and more Big coverage effect, while allow data traffic authorizing between frequency range and unauthorized frequency range without seaming and cutting based on same core net Change.For user, it means that more preferable broadband experience, the speed of higher, more preferable stability and mobile facility.

The existing access technology used in unlicensed spectrum, such as Wi-Fi, has weaker antijamming capability.In order to Avoid disturbing, many interference of Wi-Fi system designs avoid rule, such as CSMA/CD (Carrier Sense Multiple Access/Collision Detection, csma/collision detection method), the basic principle of this method It is that either terminal, first Monitor detection week before signaling or data are sent by the AP (Access Point, access point) of Wi-Fi Whether have other APs or other-end in transmission/reception signaling or data, if so, then continuing to monitor, until listening to not if enclosing Untill having；If a random number no, is generated as back off time, in this back off time, if not detected letter Order or data transfer, then after back off time terminates, AP or terminal can start to send signaling or data.The process is as schemed Shown in 2.

But due to there is good orthogonality to ensure that interference level in LTE network, so the equipment with base station functions Do not have to consider whether surrounding has other equipment or other users with base station functions in transmission number with the downstream transmission of user According to.If whether LTE also has other equipment using unauthorized frequency range when being used in unauthorized frequency range without considering around, then Great interference will be brought to Wi-Fi equipment.Because as long as LTE has business to be just transmitted, without any monitoring rule, then Wi-Fi equipment cannot be transmitted when LTE has business transmission, can only be transmitted when LTE business, can just detect channel sky Not busy state is to carry out data transmission.

As it can be seen that LTE network, when using unauthorized frequency range, one of most important key point is to ensure that LAA can be in justice Coexisted on the basis of close friend with existing access technology (such as Wi-Fi).And in order to solve the problems, such as this, can be in LTE system The mechanism for introducing a kind of LBT (Listen Before Talk, listem-before-talk) carrys out collision free, and, LBT is only with WiFi similarly Have and detecting that idle could send data, detecting channel busy, do not sending data, as shown in figure 3, being for detection cycle For the LBT subframes of 10ms, when LBT subframes detect channel busy, ensuing 9ms will not send any signal.And work as When LBT subframes detect channel idle, ensuing 9ms can send signaling or transmission data.This is resulted in, if a use The equipment with base station functions in the LTEcell (cell) of unlicensed spectrum, within a period of time, its downlink LBT is detected Down channel hurries, then will not send any signal, and terminal can not detect this equipment or nothing with base station functions at this time Method is synchronous with this equipment holding with base station functions, causes this equipment with base station functions finally can not be by reasonable profit With or and have built up the terminal of contact and can not realize that data are synchronous and cause disconnecting；Similarly, if a use The terminal of unlicensed spectrum, within a period of time, its uplink LBT detects that up channel does, then terminal does not send any signal, So that the equipment with base station functions can not also obtain the synchronous regime of terminal, the Timing Advance of terminal cannot be adjusted (Timing Advance), and lost with terminal synchronous.

Therefore, on the premise of LTE system uses LBT testing mechanisms, how to ensure that there is the equipment of base station functions Keep data synchronous with terminal, make there is the equipment of base station functions to avoid with terminal out of touch, become technology urgently to be resolved hurrily Problem.

The content of the invention

The present invention is based on the above problem, it is proposed that a kind of new technical solution, it is proposed that a kind of new LTE system exists Data synchronization scenario when unauthorized frequency range is worked using TDD mode so that LTE system is using LBT testing mechanisms Under the premise of, it can be ensured that there is the equipment of base station functions and terminal to keep data synchronous, make equipment and the end with base station functions End avoids out of touch.

In view of this, an aspect of of the present present invention proposes a kind of LTE system and uses TDD mode in unauthorized frequency range Method of data synchronization during work, for the equipment with base station functions, including：When the frame for being arranged on the TDD mode Whether idle down channel detects subframe to the down channel for being used to be periodically detected the unauthorized frequency range in structure, in office When detecting that the down channel is busy in one detection cycle, the first reference signal is sent, so that described with base station functions Equipment keeps data synchronous with the terminal in current area where the equipment with base station functions.

In the technical scheme, when downlink Channel Detection subframe detects that down channel is busy in any detection cycle When, by sending the first reference signal to terminal, terminal can be made to detect the equipment with base station functions in real time, it is ensured that tool The equipment for having base station functions is kept in touch in real time with terminal, and the equipment for making to have base station functions avoids and have built up connection Terminal is out of touch, and keeps data synchronous with terminal, while also ensures that the equipment with base station functions can be by terminal Fully utilize.Wherein, the equipment with base station functions includes base station, by the micro- of communication equipment (such as smart mobile phone) realization Cell base station etc..

In above-mentioned technical proposal, it is preferable that first reference signal includes at least one of signals below signal：It is main Synchronizing signal, auxiliary synchronous signals, cell reference signals, channel state information reference signals, broadcast channel, physical down control letter Road.

In the technical scheme, when down channel detection subframe detects that down channel is busy, by periodically sending out The one or more stated in signal are served, terminal can be made to detect the equipment with base station functions in real time, make terminal and tool The equipment for having base station functions keeps data synchronous, wherein, Physical Downlink Control Channel is PDCCH (Physical Downlink Control Channel), for sending UL grant (Uplink grant, uplink scheduling authorization).

In above-mentioned technical proposal, it is preferable that in the course of work of the LTE system, detect the LTE system in real time The load condition of the other systems of the unauthorized frequency range is used around load condition and the LTE system, and according to real-time inspection The load condition of the LTE system measured and/or the load condition of the other systems, dynamic or the semi-static setting master The sending cycle of synchronizing signal, the auxiliary synchronous signals and the cell reference signals, wherein, the master sync signal and/or The sending cycle of the auxiliary synchronous signals is N1 × 20ms, and N1 is 1 or positive even numbers, and the sending cycle of the cell reference signals is N2 × 5ms, N2 are 1 or positive even numbers, and the sending cycle of the cell reference signals be less than or equal to the master sync signal and The sending cycle of the auxiliary synchronous signals.

In the technical scheme, the negative of the load condition according to LTE system and/or other systems (such as WIFI systems) is passed through Load state, can accurately, reasonably determine PSS (Primary Synchronization Signal, master sync signal), SSS (Secondary Synchronization Signal, auxiliary synchronous signals) and CRS (Cell Specific Reference Signal, cell reference signals) sending cycle；In addition, at present, the sending cycle of PSS/SSS is usually 10ms, the hair of CRS It is usually 1ms to send the cycle, thus by controlling the sending cycle of PSS/SSS is N1 × 20ms, the sending cycle of CRS for N2 × 5ms so that when down channel is busy, the sending cycle of PSS/SSS is more than the common sending cycles of PSS/SSS, the transmission week of CRS Phase is more than the common sending cycles of CRS, so both may insure all ends for having in the equipment and coverage of base station functions End keeps data synchronous, and can reduce the interference to LTE system and other systems.

Certainly, by controlling the sending cycle of cell reference signals to be less than or equal to master sync signal and auxiliary synchronous signals Sending cycle, then may insure that terminal can also detect CRS within the cycle for detect PSS/SSS, easy to examine in real time The equipment with base station functions in cell is measured, and keeps data synchronous with the equipment with base station functions.

In above-mentioned technical proposal, it is preferable that the load condition of the LTE system and the master sync signal, described auxiliary same Walk the inversely proportional relation of sending cycle of signal and the cell reference signals；The load condition of the other systems and the master The sending cycle direct proportionality of synchronizing signal, the auxiliary synchronous signals and the cell reference signals.

In the technical scheme, when the load capacity of LTE system is big, illustrate in the equipment coverage with base station functions Terminal number it is more, by shortening master sync signal, auxiliary synchronous signals and the sending cycle of cell reference signals, tool can be made The equipment for having base station functions continually issues master sync signal, auxiliary synchronous signals and cell reference signals, and then realizes as far as possible Ground keeps data synchronous with all terminals in coverage；When the load capacity of LTE system is small, illustrate with base station functions Terminal number in equipment coverage is less, then moderately increases master sync signal, auxiliary synchronous signals and cell reference signals Sending cycle, can not only reduce the interference to other systems, at the same remain able to ensure the equipment with base station functions with Terminal keeps data synchronous；Similarly, when the load capacity of other systems is big, illustrate to have in other systems and sent out compared with multiple terminals Data are sent, thus by increasing master sync signal, auxiliary synchronous signals and the sending cycle of cell reference signals, can effectively be subtracted Few interference to other systems；When the load capacity of other systems is small, by shortening master sync signal, auxiliary synchronous signals and cell The sending cycle of reference signal can make to have the equipment of base station functions to be kept as much as possible with all terminals in coverage Data are synchronous.

In above-mentioned technical proposal, it is preferable that antenna port used in the cell reference signals is zero port, and is worked as The Physical Cell Identifier of the equipment with the base station functions adjacent cell adjacent with the current area with base station functions Equipment Physical Cell Identifier it is identical when, sending the channel state information reference signals to identify described has base station functions Equipment.

In the technical scheme, when the same Physical Cell Identifier of the collaborative share with base station functions in multiple cells During PCI (Physical Cell ID), if downlink LBT detection down channels hurry, the equipment with base station functions needs to send CSI-RS (Channel State Information Reference Signal, channel state information reference signals) is identified The equipment that Transmit Point ID (sending port ID) have base station functions, so that terminal avoids None- identified first from joining Equipment of the transmitting with base station functions of signal is examined, and keeps data synchronous with other equipment with base station functions by mistake.

In above-mentioned technical proposal, it is preferable that the sending cycle of the broadcast channel is more than 40ms.

In the technical scheme, at present, the transmitting week of PBCH (Physical Broadcast Channel, broadcast channel) Phase is usually 40ms, thus is more than 40ms by controlling the sending cycle of PBCH so that when down channel is busy, the transmission of PBCH Cycle is more than the common sending cycles of PBCH, so both may insure to have all in the equipment and coverage of base station functions Terminal keeps data synchronous, and can reduce the interference to LTE system and other systems.

In above-mentioned technical proposal, it is preferable that when first reference signal includes the master sync signal, the auxiliary synchronization Signal, the cell reference signals, the channel state information reference signals, the broadcast channel and physical down control During at least two signal in channel, the sending cycle of the signal of sending cycle maximum at least two signal is controlled to be equal to The positive integer times of the sending cycle of other signals at least two signal.

In the technical scheme, when the first reference signal includes at least two signal in above-mentioned signal, control is passed through The sending cycle of the signal of sending cycle maximum is equal to the positive integer times of the sending cycle of other signals at least two signal, It can make to have the equipment of base station functions regularly to launch at least two signal, to reduce to LTE system and other systems Interference.

In above-mentioned technical proposal, it is preferable that when sending the either signal in first reference signal, obtain described appoint The real-time sending cycle of one signal, and send sending cycle in first reference signal and be less than or equal to the transmission week in real time Other either signals of phase, and other described either signals are located at the same subframe in the frame structure with the either signal It is interior.

In the technical scheme, when the equipment with base station functions sends the either signal in the first reference signal, tool Have base station functions equipment will sending cycle be less than the either signal sending cycle other either signals, and by this other Either signal is set with the either signal in same subframe in the frame structure, so detects tool in same subframe easy to terminal All signals that the equipment for having base station functions issues, and it is easy to the energy saving interference that can also be reduced to other subframes.

In above-mentioned technical proposal, it is preferable that setting position of control first reference signal in the frame structure with Setting position of the up channel detection subframe in the frame structure is different.

In the technical scheme, by controlling the setting position of the first reference signal in the frame structure and up channel to detect The setting position of subframe in the frame structure is different, can detect the testing result of subframe to up channel to avoid the first reference signal Produce interference, it can be ensured that the accuracy of the testing result of up channel detection subframe.

A kind of LTE system is proposed according to another aspect of the present invention to work using TDD mode in unauthorized frequency range When data synchronous system, for the equipment with base station functions, including：Transmitting element, when being arranged on the time division duplex mould Whether idle down channel detects son to the down channel for being used to be periodically detected the unauthorized frequency range in the frame structure of formula Frame, when detecting that the down channel is busy in any detection cycle, sends the first reference signal, so that described have base station The equipment of function keeps data synchronous with the terminal in current area where the equipment with base station functions.

In above-mentioned technical proposal, it is preferable that further include：Detection unit, in the course of work of the LTE system, in real time Detect the load of the other systems around the load condition and the LTE system of the LTE system using the unauthorized frequency range State；Setting unit, according to the load condition of the LTE system detected in real time and/or the load shape of the other systems State, dynamic or the semi-static sending cycle that the master sync signal, the auxiliary synchronous signals and the cell reference signals are set, Wherein, the sending cycle of the master sync signal and/or the auxiliary synchronous signals is N1 × 20ms, and N1 is 1 or positive even numbers, described The sending cycle of cell reference signals is N2 × 5ms, and N2 is 1 or positive even numbers, and the sending cycle of the cell reference signals is small In or equal to the master sync signal and the auxiliary synchronous signals sending cycle.

In above-mentioned technical proposal, it is preferable that antenna port used in the cell reference signals is zero port, Yi Jisuo Transmitting element is stated to be additionally operable to：As the Physical Cell Identifier of the equipment with the base station functions neighbour adjacent with the current area When the Physical Cell Identifier of the equipment with base station functions of cell is identical, the channel state information reference signals are sent to mark Know the equipment with base station functions.

In above-mentioned technical proposal, it is preferable that further include：First control unit, when first reference signal is including described Master sync signal, the auxiliary synchronous signals, the cell reference signals, the channel state information reference signals, the broadcast During at least two signal in channel and the Physical Downlink Control Channel, sending cycle is controlled at least two signal most The sending cycle of big signal is equal to the positive integer times of the sending cycle of other signals at least two signal.

In above-mentioned technical proposal, it is preferable that further include：Acquiring unit, any in transmission first reference signal During signal, the real-time sending cycle of the either signal is obtained；The transmitting element is additionally operable to：Send first reference signal Middle sending cycle is less than or equal to other either signals of the sending cycle in real time, and other described either signals and described One signal is located in the same subframe in the frame structure.

In above-mentioned technical proposal, it is preferable that further include：Second control unit, controls first reference signal described Set setting position of the position from up channel detection subframe in the frame structure different in frame structure.

A kind of equipment with base station functions is proposed according to another aspect of the invention, including：Such as above-mentioned technical proposal Any one of LTE system unauthorized frequency range using TDD mode work when data synchronous system.

In the technical scheme, by setting LTE system to be used in unauthorized frequency range in the equipment with base station functions Data synchronous system when TDD mode works, can make terminal detect the equipment with base station functions in real time, really Protect the equipment with base station functions to keep in touch in real time with terminal, the equipment for making to have base station functions avoids and the company of having built up The terminal connect is out of touch, and keeps data synchronous with terminal, while also ensures that the equipment with base station functions can be by Terminal fully utilizes.

A kind of LTE system is proposed in accordance with a further aspect of the present invention to work using TDD mode in unauthorized frequency range When method of data synchronization, for terminal, which is connected with the equipment with base station functions described in above-mentioned technical proposal Connect, the described method includes：When described unauthorized for being periodically detected in the frame structure for being arranged on the TDD mode The whether idle up channel detection subframe of the up channel of frequency range, detects that the up channel is numerous in any detection cycle Busy, sends the second reference signal, so that the terminal in current area where the terminal with having setting for base station functions It is standby to keep data synchronous.

In the technical scheme, when up channel detection subframe detects that up channel is busy in any detection cycle When, by sending the second reference signal to the equipment with base station functions, it can make that there is the equipment of base station functions to examine in real time Measure terminal, it is ensured that the equipment with base station functions is kept in touch in real time with terminal, terminal is avoided and have built up connection The equipment with base station functions it is out of touch, and with base station functions equipment keep data it is synchronous.

In above-mentioned technical proposal, it is preferable that second reference signal includes at least one of signals below signal：Visit Survey reference signal, Physical Random Access Channel, Physical Uplink Control Channel.

In the technical scheme, when up channel detection subframe detects that up channel is busy, by periodically sending out The one or more stated in signal are served, can make that there is the equipment of base station functions to detect terminal in real time, make with base station The equipment of function keeps data synchronous with terminal.

In above-mentioned technical proposal, it is preferable that the detection reference signal issued according to the equipment with base station functions Configuration order, configures the sending cycle of the detection reference signal, and the sending cycle of the detection reference signal for N3 × 5ms, N3 are 1 or positive even numbers；The configuration order of the Physical Random Access Channel issued according to the equipment with base station functions, The sending cycle of the Physical Random Access Channel is configured, and the sending cycle of the Physical Random Access Channel is N4 × 5ms, N4 is 1 or positive even numbers；And the configuration order of the Physical Uplink Control Channel issued according to the equipment with base station functions, The sending cycle of the Physical Uplink Control Channel is configured, and the sending cycle of the Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.

In the technical scheme, at present, the minimum of SRS (Sounding Reference Signal, detection reference signal) Sending cycle is 2ms, and the minimum of PRACH (Physical Random Access Channel, Physical Random Access Channel) is sent out It is 1ms to send the cycle, PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) common transmission Cycle is 1ms, thus, it is N3 × 5ms by controlling the sending cycle of detection reference signal, the transmission of Physical Random Access Channel Cycle is N4 × 5ms, and the sending cycle of Physical Uplink Control Channel is N5 × 5ms so that when up channel is busy, detection reference The sending cycle of signal is more than the common sending cycle of detection reference signal, and the sending cycle of Physical Random Access Channel is more than thing The common sending cycle of random access channel is managed, the sending cycle of Physical Uplink Control Channel is led to more than Physical Uplink Control Channel Normal sending cycle, so not only may insure that terminal and the equipment with base station functions kept data synchronous, but also can reduce pair The interference of LTE system and other systems.

Wherein, PRACH is used to send random access code；PUCCH is used to send HARQ (Hybrid Auto Repeat Request, hybrid automatic repeat-request) feed back, CQI (Channel Quality Indicator, channel quality instruction) is reported Deng, and the Scheduling request (uplink scheduling request) of uplink.

In above-mentioned technical proposal, it is preferable that when second reference signal includes the detection reference signal, the physics During at least two signal in random access channel, the Physical Uplink Control Channel, control and sent out at least two signal The sending cycle of the signal of cycle maximum is sent to be equal to the positive integer times of the sending cycle of other signals at least two signal.

In the technical scheme, when the second reference signal includes at least two signal in above-mentioned signal, control is passed through The sending cycle of the signal of sending cycle maximum is equal to the positive integer times of the sending cycle of other signals at least two signal, Terminal can be made regularly to launch at least two signal, to reduce the interference to LTE system and other systems.

In above-mentioned technical proposal, it is preferable that when sending the either signal in second reference signal, obtain described appoint The real-time sending cycle of one signal, and send sending cycle in second reference signal and be less than or equal to the transmission week in real time Other either signals of phase, and other described either signals are located at the same subframe in the frame structure with the either signal It is interior.

In the technical scheme, when terminal sends the either signal in the second reference signal, terminal will sending cycle Frame is arranged on less than other either signals of the sending cycle of the either signal, and by other either signals and the either signal In same subframe in structure, so it is easy to the equipment with base station functions to detect all letters of terminal transmission in same subframe Number, and it is easy to the power consumption for saving the equipment with base station functions to reduce the interference to other subframes.

In above-mentioned technical proposal, it is preferable that obtain down channel detection that the equipment with base station functions issues The configuration mode of frame, the configuration mode that subframe is detected according to the down channel control second reference signal in the frame knot Set setting position of the position from down channel detection subframe in the frame structure different in structure.

In the technical scheme, by controlling the setting position of the second reference signal in the frame structure and down channel to detect The setting position of subframe in the frame structure is different, can detect the testing result of subframe to down channel to avoid the second reference signal Produce interference, it can be ensured that the accuracy of the testing result of down channel detection subframe.

A kind of LTE system is proposed in accordance with a further aspect of the present invention to work using TDD mode in unauthorized frequency range When data synchronous system, including：Transmitting element, when being used for periodically in the frame structure for being arranged on the TDD mode The whether idle up channel detection subframe of the up channel of the unauthorized frequency range is detected, is detected in any detection cycle When the up channel is busy, the second reference signal is sent, so that the terminal and the tool in current area where the terminal The equipment for having base station functions keeps data synchronous.

In above-mentioned technical proposal, it is preferable that further include：First dispensing unit, according to the equipment with base station functions The configuration order of the detection reference signal issued, configures the sending cycle of the detection reference signal, and the detection is with reference to letter Number sending cycle be N3 × 5ms, N3 is 1 or positive even numbers；Second dispensing unit, according under the equipment with base station functions The configuration order of the Physical Random Access Channel of hair, configures the sending cycle of the Physical Random Access Channel, and the physics The sending cycle of random access channel is N4 × 5ms, and N4 is 1 or positive even numbers；And the 3rd dispensing unit, there is base according to described The configuration order for the Physical Uplink Control Channel that the equipment for function of standing issues, configures the transmission week of the Physical Uplink Control Channel Phase, and the sending cycle of the Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.

In above-mentioned technical proposal, it is preferable that further include：First control unit, when second reference signal is including described During at least two signal in detection reference signal, the Physical Random Access Channel, the Physical Uplink Control Channel, control The sending cycle of the signal of sending cycle maximum is equal to other signals at least two signal at least two signal Sending cycle positive integer times.

In above-mentioned technical proposal, it is preferable that further include：First acquisition unit, when in transmission second reference signal During either signal, the real-time sending cycle of the either signal is obtained；The transmitting element is additionally operable to：Send second reference Sending cycle is less than or equal to other either signals of the sending cycle in real time, and other described either signals and institute in signal State in the same subframe that either signal is located in the frame structure.

In above-mentioned technical proposal, it is preferable that further include：Second acquisition unit, obtains the equipment with base station functions The configuration mode of the down channel detection subframe issued；Second control unit, the configuration of subframe is detected according to the down channel Mode controls setting position of second reference signal in the frame structure to detect subframe described with the down channel Setting position in frame structure is different.

A kind of terminal is proposed in accordance with a further aspect of the present invention, including：As any one of above-mentioned technical proposal Data synchronous system of the LTE system when unauthorized frequency range is worked using TDD mode.

In the technical scheme, by setting LTE system to use TDD mode work in unauthorized frequency range in terminal Data synchronous system when making, can make that there is the equipment of base station functions to detect terminal in real time, it is ensured that have base station functions Equipment keep in touch in real time with terminal, the equipment with base station functions that terminal avoided and had built up connection is lost connection System, and keep data synchronous with the equipment with base station functions.

Pass through technical scheme so that LTE system is on the premise of using LBT testing mechanisms, it can be ensured that tool There are the equipment of base station functions and terminal to keep data synchronous, make there is the equipment of base station functions to avoid with terminal out of touch.

Brief description of the drawings

Fig. 1 shows the schematic diagram of two kinds of working methods of unlicensed spectrum；

Fig. 2 shows that the interference of Wi-Fi systems avoids the schematic diagram of rule；

Fig. 3 shows the schematic diagram of LBT testing mechanisms；

Fig. 4 A and Fig. 4 B show the configuration schematic diagram of PSS/SSS；

Fig. 5 shows that LTE system according to an embodiment of the invention uses TDD mode in unauthorized frequency range The flow diagram of method of data synchronization during work；

Fig. 6 shows that LTE system according to an embodiment of the invention uses TDD mode in unauthorized frequency range The structure diagram of data synchronous system during work；

Fig. 7 shows the structure diagram of the equipment according to an embodiment of the invention with base station functions；

Fig. 8 shows that LTE system according to another embodiment of the invention uses time division duplex mould in unauthorized frequency range The flow diagram of method of data synchronization when formula works；

Fig. 9 shows that LTE system according to another embodiment of the invention uses time division duplex mould in unauthorized frequency range The structure diagram of data synchronous system when formula works；

Figure 10 shows the structure diagram of terminal according to an embodiment of the invention.

Embodiment

It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Mode is applied the present invention is further described in detail.It should be noted that in the case where there is no conflict, the implementation of the application Feature in example and embodiment can be mutually combined.

Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also To be implemented using other different from other modes described here, therefore, protection scope of the present invention and from described below Specific embodiment limitation.

Fig. 4 A and Fig. 4 B show the schematic diagram of the configuration mode of PSS/SSS.

As shown in Figure 4 A and 4 B shown in FIG., the configuration mode of PSS/SSS in 10ms subframes is shown, can from Fig. 4 A and Fig. 4 B See, TDD (Time Division Duplxing, time division duplex) frame structures and FDD (Frequency Division Duplxing, frequency division duplex) there are two PSS and two SSS in frame structure, wherein, the set-up mode all same of two PSS, And two SSS use different pseudo-random sequences, therefore, can tell which be 0ms which be 5ms, in the present embodiment, The cycle of PSS/SSS is 10ms, namely the cycle of the SSS of same pseudo-random sequence is 10ms.

Fig. 5 shows that LTE system according to an embodiment of the invention uses TDD mode in unauthorized frequency range The flow diagram of method of data synchronization during work.

As shown in figure 5, show that the LTE system of one embodiment of the present of invention uses time division duplex mould in unauthorized frequency range Method of data synchronization when formula works, including：Step 502, it is used for when in the frame structure for being arranged on the TDD mode The whether idle down channel detection subframe of the down channel of the unauthorized frequency range is periodically detected, in any detection cycle When detecting that the down channel is busy, the first reference signal is sent, so that the equipment with base station functions and the tool Terminal in current area where having the equipment of base station functions keeps data synchronous.

Certainly, by controlling the sending cycle of cell reference signals to be less than or equal to master sync signal and auxiliary synchronous signals Sending cycle, then may insure that terminal can detect CRS within the cycle for detect PSS/SSS, easy to examine in real time The equipment with base station functions in cell is measured, and keeps data synchronous with the equipment with base station functions.

Fig. 6 shows that LTE system according to an embodiment of the invention uses TDD mode in unauthorized frequency range The structure diagram of data synchronous system during work.

As shown in fig. 6, show that the LTE system of one embodiment of the present of invention uses time division duplex mould in unauthorized frequency range Data synchronous system 600 when formula works, including：Transmitting element 602, when in the frame structure for being arranged on the TDD mode The whether idle down channel detection subframe of down channel for being used to be periodically detected the unauthorized frequency range, in any detection When detecting that the down channel is busy in the cycle, send the first reference signal so that the equipment with base station functions and Terminal in current area where the equipment with base station functions keeps data synchronous.

In above-mentioned technical proposal, it is preferable that further include：Detection unit 604, it is real in the course of work of the LTE system When detect the negative of other systems around the load condition and the LTE system of the LTE system using the unauthorized frequency range Load state；Setting unit 606, according to the negative of the load condition of the LTE system detected in real time and/or the other systems Load state, dynamic or the semi-static transmission that the master sync signal, the auxiliary synchronous signals and the cell reference signals are set Cycle, wherein, the sending cycle of the master sync signal and/or the auxiliary synchronous signals is N1 × 20ms, and N1 is even for 1 or positive Number, the sending cycles of the cell reference signals are N2 × 5ms, and N2 is 1 or positive even numbers, and the transmission of the cell reference signals Cycle is less than or equal to the sending cycle of the master sync signal and the auxiliary synchronous signals.

In above-mentioned technical proposal, it is preferable that antenna port used in the cell reference signals is zero port, Yi Jisuo Transmitting element 602 is stated to be additionally operable to：When the Physical Cell Identifier of the equipment with base station functions is adjacent with the current area Adjacent cell the equipment with base station functions Physical Cell Identifier it is identical when, send the channel state information reference signals To identify the equipment with base station functions.

In above-mentioned technical proposal, it is preferable that further include：First control unit 608, when first reference signal includes institute State the master sync signal, auxiliary synchronous signals, the cell reference signals, the channel state information reference signals, described wide When broadcasting at least two signal in channel and the Physical Downlink Control Channel, sending cycle at least two signal is controlled The sending cycle of maximum signal is equal to the positive integer times of the sending cycle of other signals at least two signal.

In above-mentioned technical proposal, it is preferable that further include：Acquiring unit 610, when appointing in transmission first reference signal During one signal, the real-time sending cycle of the either signal is obtained；The transmitting element 602 is additionally operable to：Send first ginseng Examine other either signals that sending cycle in signal is less than or equal to the sending cycle in real time, and other described either signals with The either signal is located in the same subframe in the frame structure.

In above-mentioned technical proposal, it is preferable that further include：Second control unit 612, controls first reference signal in institute Stating in frame structure sets setting position of the position from up channel detection subframe in the frame structure different.

Fig. 7 shows the structure diagram of the equipment according to an embodiment of the invention with base station functions.

As shown in fig. 7, show the equipment 700 with base station functions of the embodiment of the present invention, including：Such as above-mentioned technology Data synchronous system 600 of the LTE system when unauthorized frequency range is worked using TDD mode any one of scheme.

In the technical scheme, by setting LTE system to be adopted in unauthorized frequency range in the equipment 700 with base station functions Data synchronous system 600 when being worked with TDD mode, can make terminal detect setting with base station functions in real time Standby 700, it is ensured that the equipment 700 with base station functions is kept in touch in real time with terminal, makes to have the equipment 700 of base station functions to be kept away The terminal exempted from and have built up connection is out of touch, and keeps data synchronous with terminal, while also ensures that with base station work( The equipment 700 of energy can fully be utilized by terminal.

Fig. 8 shows that LTE system according to another embodiment of the invention uses time division duplex mould in unauthorized frequency range The flow diagram of method of data synchronization when formula works.

As shown in figure 8, show that the LTE system of an alternative embodiment of the invention uses time division duplex in unauthorized frequency range Method of data synchronization when pattern works, including：Step 802, when the use in the frame structure for being arranged on the TDD mode In the whether idle up channel detection subframe of the up channel for being periodically detected the unauthorized frequency range, in any detection cycle When inside detecting that the up channel is busy, the second reference signal is sent, so that the terminal is current small with terminal place The equipment with base station functions in area keeps data synchronous.

Fig. 9 shows that LTE system according to another embodiment of the invention uses time division duplex mould in unauthorized frequency range The structure diagram of data synchronous system when formula works.

As shown in figure 9, show that the LTE system of an alternative embodiment of the invention uses time division duplex in unauthorized frequency range Data synchronous system 900 when pattern works, including：Transmitting element 902, when the frame structure for being arranged on the TDD mode In the whether idle up channel detection subframe of up channel for being used to be periodically detected the unauthorized frequency range, in any inspection When detecting that the up channel is busy in the survey cycle, the second reference signal is sent, so that the terminal and terminal place The equipment with base station functions in current area keeps data synchronous.

In above-mentioned technical proposal, it is preferable that further include：First dispensing unit 904, according to the setting with base station functions The configuration order of the standby detection reference signal issued, configures the sending cycle of the detection reference signal, and the detection reference The sending cycle of signal is N3 × 5ms, and N3 is 1 or positive even numbers；Second dispensing unit 906, according to described with base station functions The configuration order for the Physical Random Access Channel that equipment issues, configures the sending cycle of the Physical Random Access Channel, and institute The sending cycle for stating Physical Random Access Channel is N4 × 5ms, and N4 is 1 or positive even numbers；And the 3rd dispensing unit 908, according to The configuration order for the Physical Uplink Control Channel that the equipment with base station functions issues, configures the physical uplink control letter The sending cycle in road, and the sending cycle of the Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.

In above-mentioned technical proposal, it is preferable that further include：First control unit 910, when second reference signal includes institute When stating at least two signal in detection reference signal, the Physical Random Access Channel, the Physical Uplink Control Channel, control The sending cycle for making the signal of sending cycle maximum at least two signal is equal to other letters at least two signal Number sending cycle positive integer times.

In above-mentioned technical proposal, it is preferable that further include：First acquisition unit 914, when in transmission second reference signal Either signal when, obtain the real-time sending cycle of the either signal；The transmitting element 902 is additionally operable to：Send described Sending cycle is less than or equal to other either signals of the sending cycle in real time, and other described any letters in two reference signals Number it is located at the either signal in the same subframe in the frame structure.

In above-mentioned technical proposal, it is preferable that further include：Second acquisition unit 916, obtains the setting with base station functions The configuration mode of the standby down channel detection subframe issued；Second control unit 916, subframe is detected according to the down channel Configuration mode controls setting position of second reference signal in the frame structure to exist with down channel detection subframe Setting position in the frame structure is different.

As shown in Figure 10, the terminal 1000 of the embodiment of the present invention is shown, including：Such as any one of above-mentioned technical proposal Data synchronous system 900 of the LTE system when unauthorized frequency range is worked using TDD mode.

In the technical scheme, by setting LTE system to use time division duplex mould in unauthorized frequency range in terminal 1000 Data synchronous system 900 when formula works, can make that there is the equipment of base station functions to detect terminal in real time, it is ensured that have base The equipment for function of standing is kept in touch in real time with terminal 1000, makes what terminal 1000 avoided and had built up connection to have base station work( The equipment of energy is out of touch, and keeps data synchronous with the equipment with base station functions.

Technical scheme is described in detail above in association with attached drawing, passes through technical scheme LTE systems System is on the premise of using LBT testing mechanisms, it can be ensured that there is the equipment of base station functions and terminal to keep data synchronous, make tool Have the equipment of base station functions and terminal avoid it is out of touch.

The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.

Claims

A kind of 1. method of data synchronization of LTE system when unauthorized frequency range is worked using TDD mode, for base The equipment for function of standing, it is characterised in that including：

When the downlink letter for being used to be periodically detected the unauthorized frequency range in the frame structure for being arranged on the TDD mode The whether idle down channel detection subframe in road, when detecting that the down channel is busy in any detection cycle, sends the One reference signal, so that in current area where the equipment with base station functions and the equipment with base station functions Terminal keeps data synchronous.
2. data of the LTE system according to claim 1 when unauthorized frequency range is worked using TDD mode are synchronous Method, it is characterised in that

First reference signal includes at least one of signals below signal：

Master sync signal, auxiliary synchronous signals, cell reference signals, channel state information reference signals, broadcast channel, physical down Control channel.
3. data of the LTE system according to claim 2 when unauthorized frequency range is worked using TDD mode are synchronous Method, it is characterised in that

In the course of work of the LTE system, detect in real time around the load condition and the LTE system of the LTE system Using the load condition of the other systems of the unauthorized frequency range, and according to the load shape of the LTE system detected in real time The load condition of state and/or the other systems, dynamic or it is semi-static set the master sync signal, the auxiliary synchronous signals and The sending cycle of the cell reference signals, wherein, the sending cycle of the master sync signal and/or the auxiliary synchronous signals is N1 × 20ms, N1 are 1 or positive even numbers, and the sending cycles of the cell reference signals is N2 × 5ms, and N2 is 1 or positive even numbers, and institute The sending cycle for stating cell reference signals is less than or equal to the sending cycle of the master sync signal and the auxiliary synchronous signals.
4. data of the LTE system according to claim 3 when unauthorized frequency range is worked using TDD mode are synchronous Method, it is characterised in that

The load condition of the LTE system and the master sync signal, the auxiliary synchronous signals and the cell reference signals The inversely proportional relation of sending cycle；

The load condition of the other systems and the master sync signal, the auxiliary synchronous signals and the cell reference signals Sending cycle direct proportionality.
5. data of the LTE system according to claim 2 when unauthorized frequency range is worked using TDD mode are synchronous Method, it is characterised in that

Antenna port used in the cell reference signals is zero port, and

When the Physical Cell Identifier of the equipment with the base station functions adjacent cell adjacent with the current area is with base When the Physical Cell Identifier of the equipment for function of standing is identical, sending the channel state information reference signals to identify described has base The equipment for function of standing.
6. data of the LTE system according to claim 2 when unauthorized frequency range is worked using TDD mode are synchronous Method, it is characterised in that

The sending cycle of the broadcast channel is more than 40ms.
7. the LTE system according to any one of claim 2 to 6 is when unauthorized frequency range is worked using TDD mode Method of data synchronization, it is characterised in that

When first reference signal includes the master sync signal, auxiliary synchronous signals, the cell reference signals, described During at least two signal in channel state information reference signals, the broadcast channel and the Physical Downlink Control Channel, control The sending cycle for making the signal of sending cycle maximum at least two signal is equal to other letters at least two signal Number sending cycle positive integer times.
8. the LTE system according to any one of claim 2 to 6 is when unauthorized frequency range is worked using TDD mode Method of data synchronization, it is characterised in that

When sending the either signal in first reference signal, the real-time sending cycle of the either signal is obtained, concurrently Send sending cycle in first reference signal to be less than or equal to other either signals of the sending cycle in real time, and it is described its He is located in the same subframe in the frame structure either signal with the either signal.
9. LTE system according to any one of claim 1 to 6 is when unauthorized frequency range is worked using TDD mode Method of data synchronization, it is characterised in that

Setting position of first reference signal in the frame structure is controlled to detect subframe in the frame knot with up channel Setting position in structure is different.
A kind of 10. data synchronous system of LTE system when unauthorized frequency range is worked using TDD mode, for base The equipment for function of standing, it is characterised in that including：

Transmitting element, when in the frame structure for being arranged on the TDD mode be used for be periodically detected the unauthorized frequency range The whether idle down channel detection subframe of down channel, detect that the down channel is busy in any detection cycle When, the first reference signal is sent, so that the equipment with base station functions where the equipment with base station functions with working as Terminal in preceding cell keeps data synchronous.
11. data of the LTE system according to claim 10 when unauthorized frequency range is worked using TDD mode are same Step system, it is characterised in that

First reference signal includes at least one of signals below signal：

Master sync signal, auxiliary synchronous signals, cell reference signals, channel state information reference signals, broadcast channel, physical down Control channel.
12. data of the LTE system according to claim 11 when unauthorized frequency range is worked using TDD mode are same Step system, it is characterised in that further include：

Detection unit, in the course of work of the LTE system, detects the load condition of the LTE system and the LTE in real time The load condition of the other systems of the unauthorized frequency range is used around system；

Setting unit, according to the load condition of the LTE system detected in real time and/or the load shape of the other systems State, dynamic or the semi-static sending cycle that the master sync signal, the auxiliary synchronous signals and the cell reference signals are set, Wherein, the sending cycle of the master sync signal and/or the auxiliary synchronous signals is N1 × 20ms, and N1 is 1 or positive even numbers, described The sending cycle of cell reference signals is N2 × 5ms, and N2 is 1 or positive even numbers, and the sending cycle of the cell reference signals is small In or equal to the master sync signal and the auxiliary synchronous signals sending cycle.
13. data of the LTE system according to claim 12 when unauthorized frequency range is worked using TDD mode are same Step system, it is characterised in that

The load condition of the LTE system and the master sync signal, the auxiliary synchronous signals and the cell reference signals The inversely proportional relation of sending cycle；

The load condition of the other systems and the master sync signal, the auxiliary synchronous signals and the cell reference signals Sending cycle direct proportionality.
14. data of the LTE system according to claim 11 when unauthorized frequency range is worked using TDD mode are same Step system, it is characterised in that

Antenna port used in the cell reference signals is zero port, and

The transmitting element is additionally operable to：

When the Physical Cell Identifier of the equipment with the base station functions adjacent cell adjacent with the current area is with base When the Physical Cell Identifier of the equipment for function of standing is identical, sending the channel state information reference signals to identify described has base The equipment for function of standing.
15. data of the LTE system according to claim 11 when unauthorized frequency range is worked using TDD mode are same Step system, it is characterised in that

The sending cycle of the broadcast channel is more than 40ms.
16. the LTE system according to any one of claim 11 to 15 uses TDD mode work in unauthorized frequency range Data synchronous system when making, it is characterised in that further include：

First control unit, when first reference signal includes the master sync signal, the auxiliary synchronous signals, the cell In reference signal, the channel state information reference signals, the broadcast channel and the Physical Downlink Control Channel at least During two kinds of signals, the sending cycle of the signal of sending cycle maximum at least two signal is controlled to be equal to described at least two The positive integer times of the sending cycle of other signals in signal.
17. the LTE system according to any one of claim 11 to 15 uses TDD mode work in unauthorized frequency range Data synchronous system when making, it is characterised in that further include：

Acquiring unit, when sending the either signal in first reference signal, obtains the real-time transmission of the either signal Cycle；

The transmitting element is additionally operable to：Send sending cycle in first reference signal and be less than or equal to the transmission week in real time Other either signals of phase, and other described either signals are located at the same subframe in the frame structure with the either signal It is interior.
18. the LTE system according to any one of claim 10 to 15 uses TDD mode work in unauthorized frequency range Data synchronous system when making, it is characterised in that further include：

Second control unit, controls setting position of first reference signal in the frame structure and up channel detection Setting position of the frame in the frame structure is different.
A kind of 19. equipment with base station functions, it is characterised in that including：As any one of claim 10 to 18 Data synchronous system of the LTE system when unauthorized frequency range is worked using TDD mode.
20. a kind of method of data synchronization of LTE system when unauthorized frequency range is worked using TDD mode, for terminal, It is characterized in that, the terminal is connected with the equipment with base station functions described in claim 19, the described method includes：

When the uplink letter for being used to be periodically detected the unauthorized frequency range in the frame structure for being arranged on the TDD mode The whether idle up channel detection subframe in road, when detecting that the up channel is busy in any detection cycle, sends the Two reference signals, so that the terminal keeps data same with the equipment with base station functions in current area where the terminal Step.
21. data of the LTE system according to claim 20 when unauthorized frequency range is worked using TDD mode are same One step process, it is characterised in that

Second reference signal includes at least one of signals below signal：

Detection reference signal, Physical Random Access Channel, Physical Uplink Control Channel.
22. data of the LTE system according to claim 21 when unauthorized frequency range is worked using TDD mode are same One step process, it is characterised in that

The configuration order of the detection reference signal issued according to the equipment with base station functions, configures the detection with reference to letter Number sending cycle, and the sending cycle of the detection reference signal is N3 × 5ms, and N3 is 1 or positive even numbers；

The configuration order of the Physical Random Access Channel issued according to the equipment with base station functions, configure the physics with Machine accesses the sending cycle of channel, and the sending cycle of the Physical Random Access Channel is N4 × 5ms, and N4 is 1 or positive even numbers； And

The configuration order of the Physical Uplink Control Channel issued according to the equipment with base station functions, configuration described in physically The sending cycle of row control channel, and the sending cycle of the Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.
23. number of the LTE system when unauthorized frequency range is worked using TDD mode according to claim 21 or 22 According to synchronous method, it is characterised in that

When second reference signal includes the detection reference signal, the Physical Random Access Channel, the physical uplink During at least two signal in control channel, the sending cycle of the signal of sending cycle maximum at least two signal is controlled Equal to the positive integer times of the sending cycle of other signals at least two signal.
24. number of the LTE system when unauthorized frequency range is worked using TDD mode according to claim 21 or 22 According to synchronous method, it is characterised in that

When sending the either signal in second reference signal, the real-time sending cycle of the either signal is obtained, concurrently Send sending cycle in second reference signal to be less than or equal to other either signals of the sending cycle in real time, and it is described its He is located in the same subframe in the frame structure either signal with the either signal.
25. the LTE system according to any one of claim 20 to 22 uses TDD mode work in unauthorized frequency range Method of data synchronization when making, it is characterised in that

The configuration mode for the down channel detection subframe that the equipment with base station functions issues is obtained, is believed according to the downlink The configuration mode of road detection subframe controls setting position of second reference signal in the frame structure to believe with the downlink It is different that road detects setting position of the subframe in the frame structure.
26. a kind of data synchronous system of LTE system when unauthorized frequency range is worked using TDD mode, for terminal, It is characterized in that, the terminal is connected with the equipment with base station functions described in claim 19, the system comprises：

Transmitting element, when in the frame structure for being arranged on the TDD mode be used for be periodically detected the unauthorized frequency range The whether idle up channel detection subframe of up channel, detect that the up channel is busy in any detection cycle When, the second reference signal is sent, so that the terminal and the equipment with base station functions in current area where the terminal Keep data synchronous.
27. data of the LTE system according to claim 26 when unauthorized frequency range is worked using TDD mode are same Step system, it is characterised in that

Second reference signal includes at least one of signals below signal：

Detection reference signal, Physical Random Access Channel, Physical Uplink Control Channel.
28. data of the LTE system according to claim 27 when unauthorized frequency range is worked using TDD mode are same Step system, it is characterised in that further include：

First dispensing unit, the configuration order of the detection reference signal issued according to the equipment with base station functions, configuration The sending cycle of the detection reference signal, and the sending cycle of the detection reference signal is N3 × 5ms, N3 is even for 1 or positive Number；

Second dispensing unit, the configuration order of the Physical Random Access Channel issued according to the equipment with base station functions, The sending cycle of the Physical Random Access Channel is configured, and the sending cycle of the Physical Random Access Channel is N4 × 5ms, N4 is 1 or positive even numbers；And

3rd dispensing unit, the configuration order of the Physical Uplink Control Channel issued according to the equipment with base station functions, The sending cycle of the Physical Uplink Control Channel is configured, and the sending cycle of the Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.
29. number of the LTE system when unauthorized frequency range is worked using TDD mode according to claim 27 or 28 According to synchronization system, it is characterised in that further include：

First control unit, when second reference signal include the detection reference signal, the Physical Random Access Channel, During at least two signal in the Physical Uplink Control Channel, the letter of sending cycle maximum at least two signal is controlled Number sending cycle be equal at least two signal in other signals sending cycle positive integer times.
30. number of the LTE system when unauthorized frequency range is worked using TDD mode according to claim 27 or 28 According to synchronization system, it is characterised in that further include：

First acquisition unit, when sending the either signal in second reference signal, obtains the real-time of the either signal Sending cycle；

The transmitting element is additionally operable to：Send sending cycle in second reference signal and be less than or equal to the transmission week in real time Other either signals of phase, and other described either signals are located at the same subframe in the frame structure with the either signal It is interior.
31. the LTE system according to any one of claim 26 to 28 uses TDD mode work in unauthorized frequency range Data synchronous system when making, it is characterised in that further include：

Second acquisition unit, obtains the configuration mode for the down channel detection subframe that the equipment with base station functions issues；

Second control unit, the configuration mode that subframe is detected according to the down channel control second reference signal described Set setting position of the position from down channel detection subframe in the frame structure different in frame structure.
A kind of 32. terminal, it is characterised in that including：LTE system as any one of claim 26 to 31 is unauthorized Data synchronous system when frequency range is worked using TDD mode.