CN104333902A

CN104333902A - Data synchronization method, synchronization system, equipment having base station functions and terminal

Info

Publication number: CN104333902A
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: 2015-02-04
Anticipated expiration: 2034-11-06
Also published as: CN104333902B

Abstract

The invention provides a data synchronization method for an LTE (Long Term Evolution) system working under a time division duplex mode at an unlicensed frequency band, a data synchronization system for the LTE system working under the time division duplex mode at the unlicensed frequency band, equipment having base station functions and a terminal. The data synchronization method for the LTE system working under the time division duplex mode at the unlicensed frequency band comprises that a downlink channel detection subframe which is arranged inside a time division duplex mode frame structure and used for periodically detecting whether the downlink channel at the unlicensed frequency band is free or not sends a first reference signal when detects that the downlink channel is busy at any detection period to enable the equipment having the base station functions and the terminal of a current community in which the equipment having the base station functions is arranged to keep data synchronization. According to the technical scheme, the data synchronization between the equipment having the base station function and the terminal is guaranteed and the equipment having the base station function and the terminal are avoided from losing touch under the premise that the LTE system utilizes an LBT (Listen Before Talk) detection mechanism.

Description

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

Technical field

The present invention relates to communication technical field, in particular to the method for data synchronization of a kind of LTE system when unauthorized frequency range adopts TDD mode work, the data synchronous system of a kind of LTE system when unauthorized frequency range adopts TDD mode work, a kind of there is the equipment of base station functions and a kind of terminal.

Background technology

Along with the sharply increase of message volume, the mandate frequency spectrum of 3GPP is more and more not enough to provide higher network capacity.In order to improve the utilance of frequency spectrum resource further, 3GPP is just discussing how under the help of authorizing frequency spectrum, to use unlicensed spectrum, as 2.4GHz and 5GHz frequency range.The systems such as these unlicensed spectrums current mainly Wi-Fi, bluetooth, radar, medical treatment are in use.

Under normal circumstances, the access technology designed for authorizing frequency range, as LTE (Long Term Evolution, Long Term Evolution) is not suitable for using in unauthorized frequency range, because the requirement that this kind of access technology of LTE is optimized spectrum efficiency and Consumer's Experience is very high.But carrier aggregation (Carrier Aggregation, CA) function allows and LTE is deployed in unauthorized frequency range becomes possibility.3GPP proposes the concept of LAA (the auxiliary access of LTE Assisted Access, LTE), authorizes the help of frequency spectrum to use unlicensed spectrum by LTE.And unlicensed spectrum can have two kinds of working methods, one is supplementary descending (SDL, Supplemental Downlink), namely only has downlink transfer subframe; Another kind is tdd mode, has both comprised descending sub frame, sub-frame of uplink.Supplementing descending this situation can only be use (as shown in Figure 1) by carrier aggregation technology.And tdd mode is except can using by carrier aggregation technology, can also uses by DC (Dual Connectivity, doubly-linked leads to), also can independently use.

Compared to Wi-Fi system, the LTE system being operated in unauthorized frequency range has the ability to provide higher spectrum efficiency and larger coverage effect, allows data traffic authorize seamless switching between frequency range and unauthorized frequency range based on same core net simultaneously.Concerning user, this means better broadband experience, higher speed, better stability and mobile facility.

The existing access technology used in unlicensed spectrum, as Wi-Fi, has more weak antijamming capability.In order to avoid interference, rule is avoided in a lot of interference of Wi-Fi system, as CSMA/CD (Carrier Sense Multiple Access/Collision Detection, csma/collision detection method), the general principle of this method is AP (the Access Point of Wi-Fi, access point) or terminal transmission signaling or data before, want whether have other AP or other-end around first Monitor detection in sending/receiving signaling or data, if have, then continue to monitor, do not have until listen to; If no, then generate a random number as back off time, in this back off time, if signaling or transfer of data do not detected, so after back off time terminates, AP or terminal can start to send signaling or data.This process as shown in Figure 2.

But, owing to there being good orthogonality to ensure that interference level in LTE network, so the downstream transmission of the equipment and user with base station functions need not consider whether have other equipment with base station functions or other users transmitting data around.If whether have other equipment around also not considering when LTE uses in unauthorized frequency range in the unauthorized frequency range of use, so great interference will be brought to Wi-Fi equipment.As long as because LTE has business just to transmit, without any monitoring rule, so Wi-Fi equipment just can not be transmitted when LTE has business to transmit, can only wait until that LTE business is transmitted, just can detect that channel clear is to carry out transfer of data.

Visible, LTE network is when using unauthorized frequency range, and one of topmost key point guarantees that LAA can coexist with existing access technology (such as Wi-Fi) on fair friendly basis.And in order to head it off, a kind of LBT (Listen Before Talk can be introduced in LTE system, listem-before-talk) mechanism carry out collision free, similar with WiFi, LBT is only detecting that idle could send data, channel busy detected, do not send data, as shown in Figure 3, for the LBT subframe that sense cycle is 10ms, when LBT subframe detects channel busy, ensuing 9ms can not send any signal.And when LBT subframe detects channel idle, ensuing 9ms can send signaling or transmission data.This just causes, if one uses the equipment with base station functions in the LTEcell (community) of unlicensed spectrum, within a period of time, its descending LBT detects that down channel does, then can not send any signal, now terminal cannot detect this equipment with base station functions or cannot keep synchronous with the equipment that this has base station functions, causes this equipment with base station functions finally cannot be used appropriately or cannot realize data syn-chronization with the terminal having set up contact and cause disconnecting; Similarly, if the terminal of a use unlicensed spectrum, within a period of time, its up LBT detects that up channel does, then terminal does not send any signal, make the equipment with base station functions also cannot obtain the synchronous regime of terminal, the Timing Advance (Timing Advance) of terminal cannot be adjusted, and lose synchronous with terminal.

Therefore, use the prerequisite of LBT testing mechanism in LTE system under, equipment and the terminal that how can guarantee to have base station functions keep data syn-chronization, and the equipment and the terminal that make to have base station functions are avoided out of touch, become technical problem urgently to be resolved hurrily.

Summary of the invention

The present invention is just based on the problems referred to above, propose a kind of new technical scheme, propose the data syn-chronization scheme of a kind of new LTE system when unauthorized frequency range adopts TDD mode work, make LTE system under the prerequisite using LBT testing mechanism, equipment and the terminal that can guarantee to have base station functions keep data syn-chronization, and the equipment and the terminal that make to have base station functions are avoided out of touch.

In view of this, an aspect of of the present present invention proposes the method for data synchronization of a kind of LTE system when unauthorized frequency range adopts TDD mode work, for having the equipment of base station functions, comprise: when the down channel whether idle for the down channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described down channel is busy in arbitrary sense cycle, send the first reference signal, data syn-chronization is kept with the equipment and the described terminal had in the current area, equipment place of base station functions described in making with base station functions.

In this technical scheme, when descending Channel Detection subframe detects that down channel is busy in arbitrary sense cycle, by sending the first reference signal to terminal, terminal can be made the equipment with base station functions to be detected in real time, equipment and the terminal of guaranteeing to have base station functions are kept in touch in real time, the equipment with base station functions is avoided with the terminal connected out of touch, and keep data syn-chronization with terminal, also can guarantee that the equipment with base station functions can be utilized fully by terminal simultaneously.Wherein, the microcell base station etc. that the equipment with base station functions is comprised base station, realized by communication equipment (as smart mobile phone etc.).

In technique scheme, preferably, described first reference signal comprises at least one signal in following signal: master sync signal, auxiliary synchronous signals, cell reference signals, channel state information reference signals, broadcast channel, Physical Downlink Control Channel.

In this technical scheme, when down channel detection subframe detects that down channel is busy, one or more by periodically sending in above-mentioned signal, terminal can be made the equipment with base station functions to be detected in real time, terminal is made to keep data syn-chronization with the equipment with base station functions, wherein, Physical Downlink Control Channel is PDCCH (Physical Downlink Control Channel), for sending UL grant (Uplink grant, uplink scheduling authorization).

In technique scheme, preferably, in the course of work of described LTE system, the load condition of the other system of described unauthorized frequency range is used around the load condition of the described LTE system of real-time detection and described LTE system, and according to the load condition of the described LTE system detected in real time and/or the load condition of described other system, dynamic or semi-static described master sync signal is set, the transmission cycle of described auxiliary synchronous signals and described cell reference signals, wherein, the transmission cycle of described master sync signal and/or described auxiliary synchronous signals is N1 × 20ms, N1 is 1 or positive even numbers, the transmission cycle of described cell reference signals is N2 × 5ms, N2 is 1 or positive even numbers, and the transmission cycle of described cell reference signals is less than or equal to the transmission cycle of described master sync signal and described auxiliary synchronous signals.

In this technical scheme, by according to the load condition of LTE system and/or the load condition of other system (as WIFI system), accurately, reasonably can determine PSS (Primary Synchronization Signal, master sync signal), SSS (Secondary Synchronization Signal, auxiliary synchronous signals) and transmission cycle of CRS (Cell Specific Reference Signal, cell reference signals); In addition, at present, the transmission cycle of PSS/SSS is generally 10ms, the transmission cycle of CRS is generally 1ms, thus be N1 × 20ms by the transmission cycle of control PSS/SSS, the transmission cycle of CRS is N2 × 5ms, when making down channel busy, the transmission cycle of PSS/SSS is greater than the PSS/SSS common transmission cycle, the transmission cycle of CRS is greater than the CRS common transmission cycle, the all terminals so both can having guaranteed to have in the equipment of base station functions and coverage keep data syn-chronization, can reduce again the interference to LTE system and other system.

Certainly, the transmission cycle of master sync signal and auxiliary synchronous signals is less than or equal to by the transmission cycle controlling cell reference signals, then can guarantee that terminal also can detect CRS within cycle PSS/SSS being detected, be convenient to the equipment with base station functions detected in real time in community, and keep data syn-chronization with the equipment with base station functions.

In technique scheme, preferably, the load condition of described LTE system and the transmission cycle inversely proportional relation of described master sync signal, described auxiliary synchronous signals and described cell reference signals; The transmission cycle direct proportionality of the load condition of described other system and described master sync signal, described auxiliary synchronous signals and described cell reference signals.

In this technical scheme, when the load capacity of LTE system is large, illustrate that the terminal number had in the equipment coverage of base station functions is more, by shortening the transmission cycle of master sync signal, auxiliary synchronous signals and cell reference signals, the equipment with base station functions can be made to issue master sync signal, auxiliary synchronous signals and cell reference signals continually, and then realize keeping data syn-chronization with all terminals in coverage as much as possible; When the load capacity hour of LTE system, illustrate that the terminal number had in the equipment coverage of base station functions is less, then moderately increase the transmission cycle of master sync signal, auxiliary synchronous signals and cell reference signals, not only can reduce the interference to other system, equipment and the terminal that still can guarantee to have base station functions keep data syn-chronization simultaneously; Similarly, when the load capacity of other system is large, illustrates in other system and have comparatively multiple terminals to send data, thus by increasing the transmission cycle of master sync signal, auxiliary synchronous signals and cell reference signals, effectively can reduce the interference to other system; When the load capacity hour of other system, the equipment with base station functions can be made to keep data syn-chronization with all terminals in coverage as much as possible by the transmission cycle shortening master sync signal, auxiliary synchronous signals and cell reference signals.

In technique scheme, preferably, the antenna port that described cell reference signals uses is zero port, and when described in have the Physical Cell Identifier with the equipment of base station functions of the Physical Cell Identifier of the equipment of the base station functions adjacent cell adjacent with described current area identical time, send described channel state information reference signals to have the equipment of base station functions described in identifying.

In this technical scheme, as the same Physical Cell Identifier PCI of the collaborative share with base station functions in multiple community (Physical Cell ID), hurry if descending LBT detects down channel, the equipment then with base station functions need send CSI-RS (Channel State Information Reference Signal, channel state information reference signals) identify the equipment that Transmit Point ID (transmit port ID) namely has base station functions, the transmitting of None-identified first reference signal is avoided to have the equipment of base station functions to make terminal, and keep data syn-chronization with other equipment with base station functions by mistake.

In technique scheme, preferably, the transmission cycle of described broadcast channel is greater than 40ms.

In this technical scheme, at present, PBCH (Physical Broadcast Channel, broadcast channel) the transmitting cycle be generally 40ms, thus be greater than 40ms by the transmission cycle of control PBCH, when making down channel busy, the transmission cycle of PBCH is greater than the PBCH common transmission cycle, the all terminals so both can having guaranteed to have in the equipment of base station functions and coverage keep data syn-chronization, can reduce again the interference to LTE system and other system.

In technique scheme, preferably, when described first reference signal comprises at least two kinds of signals in described master sync signal, described auxiliary synchronous signals, described cell reference signals, described channel state information reference signals, described broadcast channel and described Physical Downlink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

In this technical scheme, when the first reference signal comprises at least two kinds of signals in above-mentioned signal, the positive integer in the transmission cycle of other signals in these at least two kinds of signals is equaled doubly by the transmission cycle controlling transmission cycle maximum signal, the equipment with base station functions can be made to launch this at least two kinds of signals regularly, to reduce the interference to LTE system and other system.

In technique scheme, preferably, when sending the arbitrary signal in described first reference signal, obtain the real-time transmission cycle of described arbitrary signal, and send other arbitrary signals that the transmission cycle in described first reference signal is less than or equal to the described real-time transmission cycle, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

In this technical scheme, when the equipment with base station functions sends the arbitrary signal in the first reference signal, the equipment with base station functions will send other arbitrary signals that the cycle is less than the transmission cycle of this arbitrary signal, and by this other arbitrary signal and this arbitrary signal setting same subframe in the frame structure, be convenient to terminal like this and detect in same subframe all signals that the equipment with base station functions issues, and be convenient to the energy-conservation interference that also can reduce other subframes.

In technique scheme, preferably, controlling the setting position of described first reference signal in described frame structure and described up channel, to detect the setting position of subframe in described frame structure different.

In this technical scheme, by controlling the first reference signal setting position in the frame structure and up channel, to detect subframe setting position in the frame structure different, the first reference signal can be avoided to produce interference to the testing result that up channel detects subframe, can guarantee that up channel detects the accuracy of the testing result of subframe.

Propose the data synchronous system of a kind of LTE system when unauthorized frequency range adopts TDD mode work according to a further aspect in the invention, for having the equipment of base station functions, comprise: transmitting element, when the down channel whether idle for the down channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described down channel is busy in arbitrary sense cycle, send the first reference signal, data syn-chronization is kept with the equipment and the described terminal had in the current area, equipment place of base station functions described in making with base station functions.

In technique scheme, preferably, also comprise: detecting unit, in the course of work of described LTE system, detect in real time the load condition using the other system of described unauthorized frequency range around the load condition of described LTE system and described LTE system, setting unit, according to the load condition of the described LTE system detected in real time and/or the load condition of described other system, dynamic or semi-static described master sync signal is set, the transmission cycle of described auxiliary synchronous signals and described cell reference signals, wherein, the transmission cycle of described master sync signal and/or described auxiliary synchronous signals is N1 × 20ms, N1 is 1 or positive even numbers, the transmission cycle of described cell reference signals is N2 × 5ms, N2 is 1 or positive even numbers, and the transmission cycle of described cell reference signals is less than or equal to the transmission cycle of described master sync signal and described auxiliary synchronous signals.

In technique scheme, preferably, the antenna port that described cell reference signals uses is zero port, and described transmitting element also for: when the Physical Cell Identifier with the equipment of base station functions of the described Physical Cell Identifier with the equipment of the base station functions adjacent cell adjacent with described current area is identical, send described channel state information reference signals to have the equipment of base station functions described in identifying.

In technique scheme, preferably, also comprise: the first control unit, when described first reference signal comprises at least two kinds of signals in described master sync signal, described auxiliary synchronous signals, described cell reference signals, described channel state information reference signals, described broadcast channel and described Physical Downlink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

In technique scheme, preferably, also comprising: acquiring unit, when sending the arbitrary signal in described first reference signal, obtaining the real-time transmission cycle of described arbitrary signal; Described transmitting element is also less than or equal to other arbitrary signals in described real-time transmission cycle for: transmission cycle in described first reference signal that sends, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

In technique scheme, preferably, also comprise: the second control unit, controlling the setting position of described first reference signal in described frame structure and described up channel, to detect the setting position of subframe in described frame structure different.

Propose a kind of equipment with base station functions according to another aspect of the invention, comprising: the data synchronous system of the LTE system according to any one of technique scheme when unauthorized frequency range adopts TDD mode work.

In this technical scheme, by arranging the data synchronous system of LTE system when unauthorized frequency range adopts TDD mode work on the equipment with base station functions, terminal can be made the equipment with base station functions to be detected in real time, equipment and the terminal of guaranteeing to have base station functions are kept in touch in real time, the equipment with base station functions is avoided with the terminal connected out of touch, and keep data syn-chronization with terminal, also can guarantee that the equipment with base station functions can be utilized fully by terminal simultaneously.

Propose the method for data synchronization of a kind of LTE system when unauthorized frequency range adopts TDD mode work in accordance with a further aspect of the present invention, for terminal, this terminal is connected with the equipment with base station functions described in technique scheme, described method comprises: when the up channel whether idle for the up channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described up channel is busy in arbitrary sense cycle, send the second reference signal, data syn-chronization is kept to make the equipment with base station functions in described terminal and current area, described terminal place.

In this technical scheme, when up channel detection subframe detects that up channel is busy in arbitrary sense cycle, by sending the second reference signal to the equipment with base station functions, the equipment with base station functions can be made terminal to be detected in real time, equipment and the terminal of guaranteeing to have base station functions are kept in touch in real time, terminal is avoided with the equipment with base station functions connected out of touch, and keep data syn-chronization with the equipment with base station functions.

In technique scheme, preferably, described second reference signal comprises at least one signal in following signal: detection reference signal, Physical Random Access Channel, Physical Uplink Control Channel.

In this technical scheme, when up channel detection subframe detects that up channel is busy, one or more by periodically sending in above-mentioned signal, can make the equipment with base station functions terminal be detected in real time, and the equipment and the terminal that make to have base station functions keep data syn-chronization.

In technique scheme, preferably, according to the configuration order of the detection reference signal that the described equipment with base station functions issues, the transmission cycle of described detection reference signal is configured, and the transmission cycle of described detection reference signal is N3 × 5ms, N3 is 1 or positive even numbers; According to the configuration order of the Physical Random Access Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Random Access Channel, and the transmission cycle of described Physical Random Access Channel is N4 × 5ms, N4 is 1 or positive even numbers; And the configuration order of the Physical Uplink Control Channel to issue according to the described equipment with base station functions, configure the transmission cycle of described Physical Uplink Control Channel, and the transmission cycle of described Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.

In this technical scheme, at present, SRS (Sounding Reference Signal, detection reference signal) the minimum transmission cycle be 2ms, PRACH (Physical Random Access Channel, Physical Random Access Channel) the minimum transmission cycle be 1ms, PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) the common transmission cycle is 1ms, thus, be N3 × 5ms by controlling transmission cycle of detection reference signal, the transmission cycle of Physical Random Access Channel is N4 × 5ms, the transmission cycle of Physical Uplink Control Channel is N5 × 5ms, when making up channel busy, the transmission cycle of detection reference signal is greater than the detection reference signal common transmission cycle, the transmission cycle of Physical Random Access Channel is greater than the Physical Random Access Channel common transmission cycle, the transmission cycle of Physical Uplink Control Channel is greater than the Physical Uplink Control Channel common transmission cycle, so both can guarantee that terminal kept data syn-chronization with the equipment with base station functions, the interference to LTE system and other system can be reduced again.

Wherein, PRACH is for sending random access code; PUCCH is for sending HARQ (Hybrid Auto Repeat Request, hybrid automatic repeat-request) feedback, CQI (Channel Quality Indicator, channel quality indicates) report, and up Scheduling request (uplink scheduling request).

In technique scheme, preferably, when described second reference signal comprises at least two kinds of signals in described detection reference signal, described Physical Random Access Channel, described Physical Uplink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

In this technical scheme, when the second reference signal comprises at least two kinds of signals in above-mentioned signal, the positive integer in the transmission cycle of other signals in these at least two kinds of signals is equaled doubly by the transmission cycle controlling transmission cycle maximum signal, terminal can be made to launch this at least two kinds of signals regularly, to reduce the interference to LTE system and other system.

In technique scheme, preferably, when sending the arbitrary signal in described second reference signal, obtain the real-time transmission cycle of described arbitrary signal, and send other arbitrary signals that the transmission cycle in described second reference signal is less than or equal to the described real-time transmission cycle, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

In this technical scheme, when terminal sends the arbitrary signal in the second reference signal, terminal will send other arbitrary signals that the cycle is less than the transmission cycle of this arbitrary signal, and by this other arbitrary signal and this arbitrary signal setting same subframe in the frame structure, the equipment being convenient to have base station functions like this detects in same subframe all signals that terminal sends, and the power consumption of being convenient to save the equipment with base station functions also can reduce the interference to other subframes.

In technique scheme, preferably, down channel that the equipment described in acquisition with base station functions issues detects the configuration mode of subframe, and the configuration mode detecting subframe according to described down channel controls the setting position of described second reference signal in described frame structure and described down channel, and to detect the setting position of subframe in described frame structure different.

In this technical scheme, by controlling the second reference signal setting position in the frame structure and down channel, to detect subframe setting position in the frame structure different, the second reference signal can be avoided to produce interference to the testing result that down channel detects subframe, can guarantee that down channel detects the accuracy of the testing result of subframe.

Propose the data synchronous system of a kind of LTE system when unauthorized frequency range adopts TDD mode work in accordance with a further aspect of the present invention, comprise: transmitting element, when the up channel whether idle for the up channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described up channel is busy in arbitrary sense cycle, send the second reference signal, keep data syn-chronization to make the equipment with base station functions in described terminal and current area, described terminal place.

In technique scheme, preferably, also comprise: the first dispensing unit, according to the configuration order of the detection reference signal that the described equipment with base station functions issues, configure the transmission cycle of described detection reference signal, and the transmission cycle of described detection reference signal is N3 × 5ms, N3 is 1 or positive even numbers; Second dispensing unit, according to the configuration order of the Physical Random Access Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Random Access Channel, and the transmission cycle of described Physical Random Access Channel is N4 × 5ms, N4 is 1 or positive even numbers; And the 3rd dispensing unit, according to the configuration order of the Physical Uplink Control Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Uplink Control Channel, and the transmission cycle of described Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.

In technique scheme, preferably, also comprise: the first control unit, when described second reference signal comprises at least two kinds of signals in described detection reference signal, described Physical Random Access Channel, described Physical Uplink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

In technique scheme, preferably, also comprising: the first acquiring unit, when sending the arbitrary signal in described second reference signal, obtaining the real-time transmission cycle of described arbitrary signal; Described transmitting element is also less than or equal to other arbitrary signals in described real-time transmission cycle for: transmission cycle in described second reference signal that sends, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

In technique scheme, preferably, also comprise: second acquisition unit, the down channel that the equipment described in acquisition with base station functions issues detects the configuration mode of subframe; Second control unit, the configuration mode detecting subframe according to described down channel controls the setting position of described second reference signal in described frame structure and described down channel, and to detect the setting position of subframe in described frame structure different.

Propose a kind of terminal in accordance with a further aspect of the present invention, comprising: the data synchronous system of the LTE system according to any one of technique scheme when unauthorized frequency range adopts TDD mode work.

In this technical scheme, by arranging the data synchronous system of LTE system when unauthorized frequency range adopts TDD mode work in terminal, the equipment with base station functions can be made terminal to be detected in real time, equipment and the terminal of guaranteeing to have base station functions are kept in touch in real time, terminal is avoided with the equipment with base station functions connected out of touch, and keep data syn-chronization with the equipment with base station functions.

By technical scheme of the present invention, make LTE system under the prerequisite using LBT testing mechanism, equipment and the terminal that can guarantee to have base station functions keep data syn-chronization, and the equipment and the terminal that make to have base station functions are avoided out of touch.

Accompanying drawing explanation

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

Regular schematic diagram is avoided in the interference that Fig. 2 shows Wi-Fi system;

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

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

Fig. 5 shows the schematic flow sheet of the method for data synchronization of LTE system according to an embodiment of the invention when unauthorized frequency range adopts TDD mode work;

Fig. 6 shows the structural representation of the data synchronous system of LTE system according to an embodiment of the invention when unauthorized frequency range adopts TDD mode work;

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

Fig. 8 shows the schematic flow sheet of the method for data synchronization of LTE system when unauthorized frequency range adopts TDD mode work according to another embodiment of the invention;

Fig. 9 shows the structural representation of the data synchronous system of LTE system when unauthorized frequency range adopts TDD mode work according to another embodiment of the invention;

Figure 10 shows the structural representation of terminal according to an embodiment of the invention.

Embodiment

In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.

Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.

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

As shown in Figure 4 A and 4 B shown in FIG., show the configuration mode of PSS/SSS in 10ms subframe, from Fig. 4 A and Fig. 4 B, TDD (Time Division Duplxing, time division duplex) frame structure and FDD (Frequency Division Duplxing, Frequency Division Duplexing (FDD)) all there are two PSS and two SSS in frame structure, wherein, the set-up mode of two PSS is all identical, 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, also namely the cycle of the SSS of same pseudo-random sequence is 10ms.

Fig. 5 shows the schematic flow sheet of the method for data synchronization of LTE system according to an embodiment of the invention when unauthorized frequency range adopts TDD mode work.

As shown in Figure 5, show the method for data synchronization of LTE system when unauthorized frequency range adopts TDD mode work of one embodiment of the present of invention, comprise: step 502, when the down channel whether idle for the down channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described down channel is busy in arbitrary sense cycle, send the first reference signal, data syn-chronization is kept with the equipment and the described terminal had in the current area, equipment place of base station functions described in making with base station functions.

Certainly, the transmission cycle of master sync signal and auxiliary synchronous signals is less than or equal to by the transmission cycle controlling cell reference signals, then can guarantee that terminal can detect CRS within cycle PSS/SSS being detected, be convenient to the equipment with base station functions in community to be detected in real time, and keep data syn-chronization with the equipment with base station functions.

Fig. 6 shows the structural representation of the data synchronous system of LTE system according to an embodiment of the invention when unauthorized frequency range adopts TDD mode work.

As shown in Figure 6, show the data synchronous system 600 of LTE system when unauthorized frequency range adopts TDD mode work of one embodiment of the present of invention, comprise: transmitting element 602, when the down channel whether idle for the down channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described down channel is busy in arbitrary sense cycle, send the first reference signal, data syn-chronization is kept with the equipment and the described terminal had in the current area, equipment place of base station functions described in making with base station functions.

In technique scheme, preferably, also comprise: detecting unit 604, in the course of work of described LTE system, detect in real time the load condition using the other system of described unauthorized frequency range around the load condition of described LTE system and described LTE system, setting unit 606, according to the load condition of the described LTE system detected in real time and/or the load condition of described other system, dynamic or semi-static described master sync signal is set, the transmission cycle of described auxiliary synchronous signals and described cell reference signals, wherein, the transmission cycle of described master sync signal and/or described auxiliary synchronous signals is N1 × 20ms, N1 is 1 or positive even numbers, the transmission cycle of described cell reference signals is N2 × 5ms, N2 is 1 or positive even numbers, and the transmission cycle of described cell reference signals is less than or equal to the transmission cycle of described master sync signal and described auxiliary synchronous signals.

In technique scheme, preferably, the antenna port that described cell reference signals uses is zero port, and described transmitting element 602 also for: when the Physical Cell Identifier with the equipment of base station functions of the described Physical Cell Identifier with the equipment of the base station functions adjacent cell adjacent with described current area is identical, send described channel state information reference signals to have the equipment of base station functions described in identifying.

In technique scheme, preferably, also comprise: the first control unit 608, when described first reference signal comprises at least two kinds of signals in described master sync signal, described auxiliary synchronous signals, described cell reference signals, described channel state information reference signals, described broadcast channel and described Physical Downlink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

In technique scheme, preferably, also comprising: acquiring unit 610, when sending the arbitrary signal in described first reference signal, obtaining the real-time transmission cycle of described arbitrary signal; Described transmitting element 602 is also less than or equal to other arbitrary signals in described real-time transmission cycle for: transmission cycle in described first reference signal that sends, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

In technique scheme, preferably, also comprise: the second control unit 612, controlling the setting position of described first reference signal in described frame structure and described up channel, to detect the setting position of subframe in described frame structure different.

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

As shown in Figure 7, show the equipment 700 with base station functions of embodiments of the invention, comprising: the data synchronous system 600 of the LTE system according to any one of technique scheme when unauthorized frequency range adopts TDD mode work.

In this technical scheme, by arranging the data synchronous system 600 of LTE system when unauthorized frequency range adopts TDD mode work on the equipment 700 with base station functions, terminal can be made to detect in real time have the equipment 700 of base station functions, guarantee that the equipment 700 with base station functions is kept in touch in real time with terminal, the equipment 700 with base station functions is made to avoid with the terminal connected out of touch, and keep data syn-chronization with terminal, also can guarantee that the equipment 700 with base station functions can be utilized fully by terminal simultaneously.

Fig. 8 shows the schematic flow sheet of the method for data synchronization of LTE system when unauthorized frequency range adopts TDD mode work according to another embodiment of the invention.

As shown in Figure 8, show the method for data synchronization of LTE system when unauthorized frequency range adopts TDD mode work of an alternative embodiment of the invention, comprise: step 802, when the up channel whether idle for the up channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described up channel is busy in arbitrary sense cycle, send the second reference signal, keep data syn-chronization to make the equipment with base station functions in described terminal and current area, described terminal place.

Fig. 9 shows the structural representation of the data synchronous system of LTE system when unauthorized frequency range adopts TDD mode work according to another embodiment of the invention.

As shown in Figure 9, show the data synchronous system 900 of LTE system when unauthorized frequency range adopts TDD mode work of an alternative embodiment of the invention, comprise: transmitting element 902, when the up channel whether idle for the up channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described up channel is busy in arbitrary sense cycle, send the second reference signal, data syn-chronization is kept to make the equipment with base station functions in described terminal and current area, described terminal place.

In technique scheme, preferably, also comprise: the first dispensing unit 904, according to the configuration order of the detection reference signal that the described equipment with base station functions issues, configure the transmission cycle of described detection reference signal, and the transmission cycle of described detection reference signal is N3 × 5ms, N3 is 1 or positive even numbers; Second dispensing unit 906, according to the configuration order of the Physical Random Access Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Random Access Channel, and the transmission cycle of described Physical Random Access Channel is N4 × 5ms, N4 is 1 or positive even numbers; And the 3rd dispensing unit 908, according to the configuration order of the Physical Uplink Control Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Uplink Control Channel, and the transmission cycle of described Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.

In technique scheme, preferably, also comprise: the first control unit 910, when described second reference signal comprises at least two kinds of signals in described detection reference signal, described Physical Random Access Channel, described Physical Uplink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

In technique scheme, preferably, also comprising: the first acquiring unit 914, when sending the arbitrary signal in described second reference signal, obtaining the real-time transmission cycle of described arbitrary signal; Described transmitting element 902 is also less than or equal to other arbitrary signals in described real-time transmission cycle for: transmission cycle in described second reference signal that sends, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

In technique scheme, preferably, also comprise: second acquisition unit 916, the down channel that the equipment described in acquisition with base station functions issues detects the configuration mode of subframe; Second control unit 916, the configuration mode detecting subframe according to described down channel controls the setting position of described second reference signal in described frame structure and described down channel, and to detect the setting position of subframe in described frame structure different.

As shown in Figure 10, show the terminal 1000 of embodiments of the invention, comprising: the data synchronous system 900 of the LTE system according to any one of technique scheme when unauthorized frequency range adopts TDD mode work.

In this technical scheme, by arranging the data synchronous system 900 of LTE system when unauthorized frequency range adopts TDD mode work in terminal 1000, the equipment with base station functions can be made terminal to be detected in real time, equipment and the terminal 1000 of guaranteeing to have base station functions are kept in touch in real time, terminal 1000 is avoided with the equipment with base station functions connected out of touch, and keep data syn-chronization with the equipment with base station functions.

More than be described with reference to the accompanying drawings technical scheme of the present invention, make LTE system under the prerequisite using LBT testing mechanism by technical scheme of the present invention, equipment and the terminal that can guarantee to have base station functions keep data syn-chronization, and the equipment and the terminal that make to have base station functions are avoided out of touch.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. the method for data synchronization of LTE system when unauthorized frequency range adopts TDD mode work, for having the equipment of base station functions, is characterized in that, comprising:

When the down channel whether idle for the down channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described down channel is busy in arbitrary sense cycle, send the first reference signal, keep data syn-chronization with the equipment and the described terminal had in the current area, equipment place of base station functions described in making with base station functions.

2. the method for data synchronization of LTE system according to claim 1 when unauthorized frequency range adopts TDD mode work, is characterized in that,

Described first reference signal comprises at least one signal in following signal:

Master sync signal, auxiliary synchronous signals, cell reference signals, channel state information reference signals, broadcast channel, Physical Downlink Control Channel.

3. the method for data synchronization of LTE system according to claim 2 when unauthorized frequency range adopts TDD mode work, is characterized in that,

In the course of work of described LTE system, the load condition of the other system of described unauthorized frequency range is used around the load condition of the described LTE system of real-time detection and described LTE system, and according to the load condition of the described LTE system detected in real time and/or the load condition of described other system, dynamic or semi-static described master sync signal is set, the transmission cycle of described auxiliary synchronous signals and described cell reference signals, wherein, the transmission cycle of described master sync signal and/or described auxiliary synchronous signals is N1 × 20ms, N1 is 1 or positive even numbers, the transmission cycle of described cell reference signals is N2 × 5ms, N2 is 1 or positive even numbers, and the transmission cycle of described cell reference signals is less than or equal to the transmission cycle of described master sync signal and described auxiliary synchronous signals.

4. the method for data synchronization of LTE system according to claim 3 when unauthorized frequency range adopts TDD mode work, is characterized in that,

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

The transmission cycle direct proportionality of the load condition of described other system and described master sync signal, described auxiliary synchronous signals and described cell reference signals.

5. the method for data synchronization of LTE system according to claim 2 when unauthorized frequency range adopts TDD mode work, is characterized in that,

The antenna port that described cell reference signals uses is zero port, and

When the Physical Cell Identifier with the equipment of base station functions of the described Physical Cell Identifier with the equipment of the base station functions adjacent cell adjacent with described current area is identical, send described channel state information reference signals to have the equipment of base station functions described in identifying.

6. the method for data synchronization of LTE system according to claim 2 when unauthorized frequency range adopts TDD mode work, is characterized in that,

The transmission cycle of described broadcast channel is greater than 40ms.

7. the method for data synchronization of the LTE system according to any one of claim 2 to 6 when unauthorized frequency range adopts TDD mode work, is characterized in that,

When described first reference signal comprises at least two kinds of signals in described master sync signal, described auxiliary synchronous signals, described cell reference signals, described channel state information reference signals, described broadcast channel and described Physical Downlink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

8. the method for data synchronization of the LTE system according to any one of claim 2 to 6 when unauthorized frequency range adopts TDD mode work, is characterized in that,

When sending the arbitrary signal in described first reference signal, obtain the real-time transmission cycle of described arbitrary signal, and send other arbitrary signals that the transmission cycle in described first reference signal is less than or equal to the described real-time transmission cycle, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

9. the method for data synchronization of LTE system according to any one of claim 1 to 6 when unauthorized frequency range adopts TDD mode work, is characterized in that,

Controlling the setting position of described first reference signal in described frame structure and described up channel, to detect the setting position of subframe in described frame structure different.

10. the data synchronous system of LTE system when unauthorized frequency range adopts TDD mode work, for having the equipment of base station functions, is characterized in that, comprising:

Transmitting element, when the down channel whether idle for the down channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described down channel is busy in arbitrary sense cycle, send the first reference signal, keep data syn-chronization with the equipment and the described terminal had in the current area, equipment place of base station functions described in making with base station functions.

The data synchronous system of 11. LTE system according to claim 10 when unauthorized frequency range adopts TDD mode work, is characterized in that,

The data synchronous system of 12. LTE system according to claim 11 when unauthorized frequency range adopts TDD mode work, is characterized in that, also comprise:

Detecting unit, in the course of work of described LTE system, detects in real time the load condition using the other system of described unauthorized frequency range around the load condition of described LTE system and described LTE system;

Setting unit, according to the load condition of the described LTE system detected in real time and/or the load condition of described other system, dynamic or semi-static described master sync signal is set, the transmission cycle of described auxiliary synchronous signals and described cell reference signals, wherein, the transmission cycle of described master sync signal and/or described auxiliary synchronous signals is N1 × 20ms, N1 is 1 or positive even numbers, the transmission cycle of described cell reference signals is N2 × 5ms, N2 is 1 or positive even numbers, and the transmission cycle of described cell reference signals is less than or equal to the transmission cycle of described master sync signal and described auxiliary synchronous signals.

The data synchronous system of 13. LTE system according to claim 12 when unauthorized frequency range adopts TDD mode work, is characterized in that,

The data synchronous system of 14. LTE system according to claim 11 when unauthorized frequency range adopts TDD mode work, is characterized in that,

The antenna port that described cell reference signals uses is zero port, and

Described transmitting element also for:

The data synchronous system of 15. LTE system according to claim 11 when unauthorized frequency range adopts TDD mode work, is characterized in that,

The transmission cycle of described broadcast channel is greater than 40ms.

16., according to claim 11 to the data synchronous system of the LTE system according to any one of 15 when unauthorized frequency range adopts TDD mode work, is characterized in that, also comprise:

First control unit, when described first reference signal comprises at least two kinds of signals in described master sync signal, described auxiliary synchronous signals, described cell reference signals, described channel state information reference signals, described broadcast channel and described Physical Downlink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

17., according to claim 11 to the data synchronous system of the LTE system according to any one of 15 when unauthorized frequency range adopts TDD mode work, is characterized in that, also comprise:

Acquiring unit, when sending the arbitrary signal in described first reference signal, obtains the real-time transmission cycle of described arbitrary signal;

Described transmitting element is also less than or equal to other arbitrary signals in described real-time transmission cycle for: transmission cycle in described first reference signal that sends, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

18., according to claim 10 to the data synchronous system of the LTE system according to any one of 15 when unauthorized frequency range adopts TDD mode work, is characterized in that, also comprise:

Second control unit, controlling the setting position of described first reference signal in described frame structure and described up channel, to detect the setting position of subframe in described frame structure different.

19. 1 kinds of equipment with base station functions, is characterized in that, comprising: the data synchronous system of the LTE system according to any one of claim 10 to 18 when unauthorized frequency range adopts TDD mode work.

The method of data synchronization of 20. 1 kinds of LTE system when unauthorized frequency range adopts TDD mode work, for terminal, it is characterized in that, described terminal is connected with the equipment with base station functions according to claim 19, and described method comprises:

When the up channel whether idle for the up channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described up channel is busy in arbitrary sense cycle, send the second reference signal, keep data syn-chronization to make the equipment with base station functions in described terminal and current area, described terminal place.

The method of data synchronization of 21. LTE system according to claim 20 when unauthorized frequency range adopts TDD mode work, is characterized in that,

Described second reference signal comprises at least one signal in following signal:

Detection reference signal, Physical Random Access Channel, Physical Uplink Control Channel.

The method of data synchronization of 22. LTE system according to claim 21 when unauthorized frequency range adopts TDD mode work, is characterized in that,

According to the configuration order of the detection reference signal that the described equipment with base station functions issues, configure the transmission cycle of described detection reference signal, and the transmission cycle of described detection reference signal is N3 × 5ms, N3 is 1 or positive even numbers;

According to the configuration order of the Physical Random Access Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Random Access Channel, and the transmission cycle of described Physical Random Access Channel is N4 × 5ms, N4 is 1 or positive even numbers; And

According to the configuration order of the Physical Uplink Control Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Uplink Control Channel, and the transmission cycle of described Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.

The method of data synchronization of 23. LTE system according to claim 21 or 22 when unauthorized frequency range adopts TDD mode work, is characterized in that,

When described second reference signal comprises at least two kinds of signals in described detection reference signal, described Physical Random Access Channel, described Physical Uplink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

The method of data synchronization of 24. LTE system according to claim 21 or 22 when unauthorized frequency range adopts TDD mode work, is characterized in that,

When sending the arbitrary signal in described second reference signal, obtain the real-time transmission cycle of described arbitrary signal, and send other arbitrary signals that the transmission cycle in described second reference signal is less than or equal to the described real-time transmission cycle, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

The method of data synchronization of 25. LTE system according to any one of claim 20 to 22 when unauthorized frequency range adopts TDD mode work, is characterized in that,

Down channel that the equipment described in acquisition with base station functions issues detects the configuration mode of subframe, and the configuration mode detecting subframe according to described down channel controls the setting position of described second reference signal in described frame structure and described down channel, and to detect the setting position of subframe in described frame structure different.

The data synchronous system of 26. 1 kinds of LTE system when unauthorized frequency range adopts TDD mode work, for terminal, it is characterized in that, described terminal is connected with the equipment with base station functions according to claim 19, and described system comprises:

Transmitting element, when the up channel whether idle for the up channel periodically detecting described unauthorized frequency range in the frame structure being arranged on described TDD mode detects subframe, when detecting that described up channel is busy in arbitrary sense cycle, send the second reference signal, keep data syn-chronization to make the equipment with base station functions in described terminal and current area, described terminal place.

The data synchronous system of 27. LTE system according to claim 26 when unauthorized frequency range adopts TDD mode work, is characterized in that,

The data synchronous system of 28. LTE system according to claim 27 when unauthorized frequency range adopts TDD mode work, is characterized in that, also comprise:

First dispensing unit, according to the configuration order of the detection reference signal that the described equipment with base station functions issues, configures the transmission cycle of described detection reference signal, and the transmission cycle of described detection reference signal is N3 × 5ms, N3 is 1 or positive even numbers;

Second dispensing unit, according to the configuration order of the Physical Random Access Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Random Access Channel, and the transmission cycle of described Physical Random Access Channel is N4 × 5ms, N4 is 1 or positive even numbers; And

3rd dispensing unit, according to the configuration order of the Physical Uplink Control Channel that the described equipment with base station functions issues, configure the transmission cycle of described Physical Uplink Control Channel, and the transmission cycle of described Physical Uplink Control Channel is N5 × 5ms, N5 is 1 or positive even numbers.

The data synchronous system of 29. LTE system according to claim 27 or 28 when unauthorized frequency range adopts TDD mode work, is characterized in that, also comprise:

First control unit, when described second reference signal comprises at least two kinds of signals in described detection reference signal, described Physical Random Access Channel, described Physical Uplink Control Channel, at least two kinds of signals described in transmission cycle of the signal that at least two kinds of signals described in control, the transmission cycle is maximum equals, the positive integer in the transmission cycle of other signals doubly.

The data synchronous system of 30. LTE system according to claim 27 or 28 when unauthorized frequency range adopts TDD mode work, is characterized in that, also comprise:

First acquiring unit, when sending the arbitrary signal in described second reference signal, obtains the real-time transmission cycle of described arbitrary signal;

Described transmitting element is also less than or equal to other arbitrary signals in described real-time transmission cycle for: transmission cycle in described second reference signal that sends, and other arbitrary signals described and described arbitrary signal are arranged in the same subframe of described frame structure.

The data synchronous system of 31. LTE system according to any one of claim 26 to 28 when unauthorized frequency range adopts TDD mode work, is characterized in that, also comprise:

Second acquisition unit, the down channel that the equipment described in acquisition with base station functions issues detects the configuration mode of subframe;

Second control unit, the configuration mode detecting subframe according to described down channel controls the setting position of described second reference signal in described frame structure and described down channel, and to detect the setting position of subframe in described frame structure different.

32. 1 kinds of terminals, is characterized in that, comprising: the data synchronous system of the LTE system according to any one of claim 26 to 31 when unauthorized frequency range adopts TDD mode work.