CN106488540B

CN106488540B - A kind of communication means, device and the system of the M2M system based on TDD

Info

Publication number: CN106488540B
Application number: CN201510557512.2A
Authority: CN
Inventors: 杨浔; 姜艳平; 余西西
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-01
Filing date: 2015-09-01
Publication date: 2019-11-29
Anticipated expiration: 2035-09-01
Also published as: CN106488540A; WO2017036236A1; WO2017036236A9

Abstract

Communication means, user equipment, base station and the communication system for the M2M system based on TDD that the invention discloses a kind of.The communication means includes: primary synchronization signal PSS, secondary synchronization signal SSS and the frame number FID for receiving base station and sending；First time interval and the second time interval are obtained, which is to be properly received the PSS to the time interval for being properly received the SSS, which is to be properly received the SSS to the time interval for being properly received the FID；The ratio of uplink subframe to downlink subframe of the system is determined according to the first time interval and second time interval.Communication means, user equipment, base station and the communication system of the M2M system based on TDD of the embodiment of the present invention, first time interval and the second time interval can be passed through, the ratio of uplink subframe to downlink subframe of the system is determined in advance, and then takes corresponding dormancy strategy to reduce power consumption.

Description

A kind of communication means, device and the system of the M2M system based on TDD

Technical field

The present invention relates to the communications fields, and more particularly, to a kind of communication means of M2M system based on TDD, use Family equipment, base station and communication system.

Background technique

There is provided Machine To Machine (Machine To Machine, M2M) communication service using cellular network is that current M2M is led The hot spot of domain research.M2M network and existing cellular network colocation site, frequency range, which becomes, altogether reduces operator and maintenance cost Primary demand.In order to make full use of limited Cellular Networks frequency spectrum, third generation partner program (3rd Generation Partnership Project, 3GPP) consider to utilize global system for mobile communications (Global System of Mobile Communication, GSM) or long term evolution (Long Term Evolution, LTE) system guard band realize machine pair Machine (Machine To Machine, M2M) systematic difference is based on frequency division duplex (Frequency Division Duplex, FDD) M2M system development and utilization it is more abundant, and based on time division duplex (Time Division Duplex, TDD M2M system) is not fully developed, and how to provide M2M application using these TDD frequency spectrum resources is to need asking for consideration Topic.

Summary of the invention

The embodiment of the present invention provides communication means, user equipment, base station and the communication system of a kind of M2M system based on TDD System can realize that M2M is applied using TDD frequency spectrum resource, also, user equipment can determine that in advance the ascending-descending subframes of system are matched Than taking corresponding dormancy strategy to reduce power consumption according to the ratio of uplink subframe to downlink subframe of the system.

In a first aspect, providing a kind of communication means of M2M system based on TDD, which includes:

User equipment receives primary synchronization signal PSS, secondary synchronization signal SSS and the frame number FID that base station is sent；

The user equipment obtains first time interval and the second time interval, which is to be properly received to be somebody's turn to do PSS to be properly received the SSS time interval, second time interval be properly received the SSS to successful reception the FID when Between be spaced；

The user equipment determines that the ascending-descending subframes of the system are matched according to the first time interval and second time interval Than.

With reference to first aspect, in the first implementation of first aspect, the user equipment is according between the first time Every the ratio of uplink subframe to downlink subframe for determining the system with second time interval, comprising:

Obtain the duration T of the first time interval_PSFor subframe duration T_sfMultiple A；

Obtain the duration T of second time interval_FSFor subframe duration T_sfMultiple B；

The A and B is substituted into pre-set ratio of uplink subframe to downlink subframe relationship, determines that the ascending-descending subframes of the system are matched Than；

The pre-set ratio of uplink subframe to downlink subframe relationship includes: A_i, B_i, the ratio of uplink subframe to downlink subframe of correspondence system is C_i: D_i；Wherein, the A_i, the B_i, the C_i, the D_iAnd the i is positive integer, which is the A_iAn occurrence, the B be the B_iOne A occurrence.

The first implementation with reference to first aspect, in second of implementation of first aspect, the acquisition this The duration T of two time intervals_FSFor subframe duration T_sfMultiple B include:

If the T_FSNo more than the time span of the superframe of the systemic presupposition, then by the T_FSWith the T_sfRatio be determined as this B。

The first implementation with reference to first aspect, in the third implementation of first aspect, the acquisition this The duration T of two time intervals_FSFor subframe duration T_sfMultiple B include:

If the T_FSGreater than the time span of the superframe of the systemic presupposition, then by the T_FSTo the time span modulus of the superframe Obtain T '_FS, by the T '_FSWith the T_sfRatio be determined as the B.

Any implementation of with reference to first aspect the first into the third implementation, the of first aspect In four kinds of implementations, the A_i, B_i, the ratio of uplink subframe to downlink subframe of correspondence system is C_i:D_iInclude:

A₁=5, B₁=4, the ratio of uplink subframe to downlink subframe of correspondence system is C₁:D₁=2:3；

A₂=4, B₂=4, the ratio of uplink subframe to downlink subframe of correspondence system is C₂:D₂=3:2；

A₃=3, B₃=4, the ratio of uplink subframe to downlink subframe of correspondence system is C₃:D₃=4:1；

A₄=5, B₄=3, the ratio of uplink subframe to downlink subframe of correspondence system is C₄:D₄=5:5；

A₅=5, B₅=1, the ratio of uplink subframe to downlink subframe of correspondence system is C₅:D₅=7:3；

A₆=4, B₆=1, the ratio of uplink subframe to downlink subframe of correspondence system is C₆:D₆=8:2；

A₇=3, B₇=1, the ratio of uplink subframe to downlink subframe of correspondence system is C₇:D₇=9:1.

With reference to first aspect and its above-mentioned implementation, in the 5th kind of implementation of first aspect, the communication means Further include:

The user equipment determines sub-frame of uplink after determining the ratio of uplink subframe to downlink subframe of the system, in the sub-frame of uplink In do not send information subframe carry out suspend mode.

Second aspect provides a kind of communication means of machine to machine M2M system based on Time Division Duplex TDD, this is logical Letter method includes:

Base station determines primary synchronization signal PSS, secondary synchronization signal SSS and frame number FID according to the frame structure of the systemic presupposition Send position of the subframe in frame；

It is sent out respectively to user equipment (UE) in the transmission subframe position in the frame of the PSS, the SSS and the FID base station The PSS, the SSS and the FID are given, in order to which the UE determines the upper and lower of the system according to first time interval and the second time interval Row subframe proportion, the first time interval determine by the transmission subframe position in the frame of the PSS and the SSS, this second when Between interval determined by the transmission subframe position in the frame of the SSS and the FID.

In conjunction with second aspect, in the first implementation of second aspect, the base station is according to the frame knot of the systemic presupposition Structure determines primary synchronization signal PSS, position of the transmission subframe of secondary synchronization signal SSS and FID in frame, comprising:

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 2:3, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 5 work song frames of the frame and 6 work song frames, and sending in 0 work song frame of next frame of the frame should FID, wherein the frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 3:2, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 9 work song frames of the frame, wherein should Frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 4:1, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 3 work song frames of the frame and 4 work song frames, sends the FID in 8 work song frames of the frame, wherein should Frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 5:5, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 5 work song frames of the frame and 6 work song frames, sends the FID in 9 work song frames of the frame, wherein should Frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 7:3, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 5 work song frames of the frame and 6 work song frames, sends the FID in 7 work song frames of the frame, wherein should Frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 8:2, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 6 work song frames of the frame, wherein should Frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 9:1, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 3 work song frames of the frame and 4 work song frames, sends the FID in 5 work song frames of the frame, wherein should Frame includes 10 subframes.

The third aspect provides a kind of user equipment, comprising:

Receiving module, for receiving primary synchronization signal PSS, secondary synchronization signal SSS and the frame number FID of base station transmission；

Module is obtained, for obtaining first time interval and the second time interval, which is the reception mould Block is properly received the PSS to the time interval for being properly received the SSS, which is that receiving module successful reception should Time interval of the SSS to the successful reception FID；

Determining module, the first time interval and second time interval for being obtained according to the acquisition module determine should The ratio of uplink subframe to downlink subframe of system.

In conjunction with the third aspect, in the first implementation of the third aspect, which includes:

First acquisition unit, for obtaining the duration T of the first time interval_PSFor subframe duration T_sfMultiple A；

Second acquisition unit, for obtaining the duration T of second time interval_FSFor subframe duration T_sfMultiple B；

First determination unit, the B that A and the second acquisition unit for obtaining the first acquisition unit are obtained substitute into pre- In the ratio of uplink subframe to downlink subframe relationship being first arranged, the ratio of uplink subframe to downlink subframe of the system is determined；

In conjunction with the first implementation of the third aspect, in second of implementation of the third aspect, second acquisition Unit is specifically used for:

In conjunction with the first implementation of the third aspect, in the third implementation of the third aspect, second acquisition Unit is also used to:

In conjunction with the first any implementation into the third implementation of the third aspect, the of the third aspect In four kinds of implementations, the A_i, B_i, the ratio of uplink subframe to downlink subframe of correspondence system is C_i:D_iInclude:

In conjunction with the third aspect and its above-mentioned implementation, in the 5th kind of implementation of the third aspect, further includes:

Sleep block, for determining sub-frame of uplink after the determining module determines the ratio of uplink subframe to downlink subframe of the system, So that the subframe that the user equipment does not send information in the sub-frame of uplink carries out suspend mode.

Fourth aspect provides a kind of base station, comprising:

Determining module determines primary synchronization signal PSS for the frame structure according to the systemic presupposition, secondary synchronization signal SSS and Position of the transmission subframe of frame number FID in frame；

Sending module, in the transmission subframe position in the frame of the PSS, the SSS and the FID, respectively to user Equipment UE sends the PSS, the SSS and the FID, in order to which the UE determines that this is according to first time interval and the second time interval The ratio of uplink subframe to downlink subframe of system, the first time interval determine by the transmission subframe position in the frame of the PSS and the SSS, Second time interval is determined by the transmission subframe position in the frame of the SSS and the FID.

In conjunction with fourth aspect, in the first implementation of fourth aspect, which is specifically used for:

5th aspect, provides a kind of communication system, including above-mentioned user equipment and base station.

Based on the above-mentioned technical proposal, communication means, user equipment, the base of the M2M system based on TDD of the embodiment of the present invention It stands and communication system, can realize that M2M is applied using TDD frequency spectrum resource, also, UE can be according to first time interval and second Time interval determines the ratio of uplink subframe to downlink subframe of the system in advance, without determining the system by system information block SIB information Ratio of uplink subframe to downlink subframe, and then corresponding dormancy strategy can be taken to reduce according to the ratio of uplink subframe to downlink subframe of the system Power consumption.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 is the frame structure schematic diagram of the M2M system according to an embodiment of the present invention based on TDD.

Fig. 2 is the schematic flow chart of the communication means of the M2M system according to an embodiment of the present invention based on TDD.

Fig. 3 is another schematic flow chart of the communication means of the M2M system according to an embodiment of the present invention based on TDD.

Fig. 4 is another schematic flow chart of the communication means of the M2M system according to an embodiment of the present invention based on TDD.

Fig. 5 is the schematic flow chart of the communication means of the M2M system according to another embodiment of the present invention based on TDD.

Fig. 6 is another schematic flow of the communication means of the M2M system according to another embodiment of the present invention based on TDD Figure.

Fig. 7 is the schematic flow chart of the communication means of the M2M system based on TDD according to yet another embodiment of the invention.

Fig. 8 is the schematic block diagram of user equipment according to an embodiment of the present invention.

Fig. 9 is the schematic block diagram of base station according to an embodiment of the present invention.

Figure 10 is the schematic block diagram of communication system according to an embodiment of the present invention.

Figure 11 is the schematic block diagram of user equipment according to another embodiment of the present invention.

Figure 12 is the schematic block diagram of base station according to another embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall within the protection scope of the present invention.

Technical solution of the present invention can be applied to various communication systems, such as: global system for mobile communications (GSM, Global System of Mobile communication), CDMA (CDMA, Code Division Multiple Access) system, wideband code division multiple access (WCDMA, Wideband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS, General Packet Radio Service), long term evolution (LTE, Long Term Evolution), M2M system based on TDD/FDD etc..

User equipment (UE, User Equipment), also referred to as mobile terminal (Mobile Terminal), movement User equipment etc., can be through wireless access network (for example, RAN, Radio Access Network) and one or more core nets It is communicated, or the terminal device based on TDD/FDD LTE-M system, user equipment can be mobile terminal, it is such as mobile Phone (or be " honeycomb " phone) and computer with mobile terminal, for example, it may be portable, pocket, hand-held, Built-in computer or vehicle-mounted mobile device, they exchange language and/or data with wireless access network.

Base station can be the base station (BTS, Base Transceiver Station) in GSM or CDMA, be also possible to Base station (NodeB) in WCDMA can also be evolved base station (eNB or e-NodeB, evolutional Node in LTE B), or the base station based on TDD/FDD M2M system, the present invention do not limit.

M2M system based on FDD, a resource block (Resource Block, RB) is 180KHz on frequency domain, is divided into 12 physical channels, channel spacing 15KHz, signal bandwidth 12KHz, UE access network need first to carry out system and synchronize, so After receiving system information block (System Information Block, SIB) and the instruction of uplink and downlink channel afterwards, just it can be carried out up and down Row data information sends and receives.For example, within the system, physical broadcast synchronizing channel (Physical Broadcast Synchronization Channel, PBSCH) for UE progress frame number (Frame Identification, FID) detection, symbol Frame index detection and system information is sent in number Timing Synchronization and carrier spectrum estimation, superframe, due to broadcast synchronization channel Signal bandwidth is 12KHz, therefore 80 milliseconds of (ms) frame lengths include 960 symbols altogether.It wherein, is the master of 256 symbols comprising length Synchronization signal (Primary Synchronization Signal, PSS), the secondary synchronization signal that length is 257 symbols (Secondary Synchronization Signal, SSS) and length are that frame index indicates sequence in the superframe of 127 symbols Column, remaining 320 symbol are used for transmission system information.Broadcast synchronization channel is carried out continuously primary and secondary synchronization signals, frame number and system Information is broadcasted to help UE access network.

In embodiments of the present invention, it in order to make full use of limited Cellular Networks frequency spectrum, and realizes total with frequency with TDD system The needs of site consider the design that the M2M system based on TDD is realized using the guard band of TDD, consider to continue to use base on frequency domain In the design of the downlink sub-channels of the M2M system of FDD, for example, a RB can be 180KHz, it is divided into 15 sub-channels, one A downlink sub-channels can be 12KHz, the design of the M2M system based on FDD also be continued to use in the time domain, for example, can define super Frame (super-frame) is 80ms, and 8 frames (frame) are divided into superframe, and each frame is 10ms.10 are divided into each frame A subframe (sub-frame), each subframe are 1ms.

It should be understood that the embodiment of the present invention is only described so that a RB is 180KHz as an example, but the present invention is not limited thereto, One RB may be 360KHz, be divided into 30 sub-channels etc..It should also be understood that the embodiment of the present invention is only that 80ms is with superframe Example is described, but the present invention is not limited thereto, and superframe may be 120ms, 160ms etc..

In addition, the M2M system based on TDD is considered as and TDD system to guarantee not interfereing with each other with existing TDD system It unites identical ratio of uplink subframe to downlink subframe, for example, ratio of uplink subframe to downlink subframe identical with LTE TDD system can be used, then base Can be as shown in table 1 in the ratio of uplink subframe to downlink subframe of the M2M system of TDD, wherein D indicates that downlink subframe, S indicate special subframe, U Indicate sub-frame of uplink.In this case, the synchronization signal of the M2M system based on TDD and frame number were just needed in the shorter time It inside distributes to guarantee that UE can be synchronized successfully and be detected with frame number, illustrates by taking ratio of uplink subframe to downlink subframe 5:5 as an example, in frame It is interior, allow the subframe of transmission downlink data for respectively 0 work song frame, 1 work song frame, 5 work song frames, 6 work song frames and 9 work song frames, by It not can be carried out fragment in primary and secondary synchronization signals and frame number to send, so a feasible sending method is in 0 work song frame and 1 work song Frame sends primary synchronization signal, sends secondary synchronization signal in 5 work song frames and 6 work song frames, sends frame number, such case in 9 work song frames The lower frame structure for designing the system can be with as shown in Figure 1, in Fig. 1, X# represents X work song frame, and 0#~9# represents 0 work song frame~9 Work song frame.

The ratio of uplink subframe to downlink subframe that table 1 is supported based on the M2M system of TDD

The downlink control management information of M2M system based on TDD mainly includes primary synchronization signal, secondary synchronization signal, frame number, System information block etc..Wherein, PSS, SSS, FID sequence design continue to use the design of the M2M system based on FDD.In superframes, first Frame is used to hero of biography secondary synchronization signal and frame number, and the primary and secondary synchronization signals and frame are transmitted in consideration using one or several subchannels Number, merge for example, can use 15 sub-channels using the primary and secondary synchronization signals and frame number is transmitted, so that system is major-minor Synchronization signal and frame number can be completed to send in one or several continuous downlink subframes, to guarantee that user equipment can Carry out system is synchronous and frame number detects.

As can be seen from the above description, the M2M communication system based on TDD, base station periodically passes through superframe and is communicated with UE, First frame in the superframe is for sending PSS, SSS and FID, and after having sent PSS, SSS and the FID, base station continues to send SIB Information, UE can determine the ratio of uplink subframe to downlink subframe of the system according to the SIB information, due to send time of the SIB information compared with Long, UE needs receive SIB information just after being properly received PSS, SSS and FID again and can determine that the ratio of uplink subframe to downlink subframe of the system, And the time span that these operations at least need a superframe is completed, therefore, this is for there is the user equipment of low-power consumption demand It says and is highly detrimental to power saving, so if UE can determine that the ratio of uplink subframe to downlink subframe of the system, UE can choose not as early as possible The sub-frame of uplink for sending uplink information carries out suspend mode, provided in an embodiment of the present invention based on TDD's to achieve the purpose that power saving The communication means of M2M system can using TDD frequency spectrum resource realize M2M apply, and base station can by control PSS, SSS and Position of the transmission subframe of FID in frame, enables UE to determine the ratio of uplink subframe to downlink subframe of the system in advance, and then according to this The ratio of uplink subframe to downlink subframe of system takes corresponding dormancy strategy to reduce power consumption.

The schematic flow of the communication means 1000 for the M2M system based on TDD that Fig. 2 shows according to an embodiment of the present invention Figure, which can be executed by user equipment, as shown in Fig. 2, this method 1000 includes:

S1100, user equipment receive primary synchronization signal PSS, secondary synchronization signal SSS and the frame number FID that base station is sent；

S1200, which obtains first time interval and the second time interval, the first time interval are successfully to connect The PSS is received to the time interval for being properly received the SSS, which is to be properly received the SSS to the successful reception FID Time interval；

S1300, the user equipment determine the uplink and downlink of the system according to the first time interval and second time interval Subframe proportion.

Specifically, UE successively receives primary synchronization signal PSS, secondary synchronization signal SSS and the frame number FID of base station transmission, obtain Take first time interval and the second time interval, the first time interval be properly received the PSS to successful reception the SSS when Between be spaced, second time interval be properly received the SSS to be properly received the FID time interval, then the UE according to this First time interval and second time interval determine the ratio of uplink subframe to downlink subframe of the system.Optionally, the UE can according at The second moment that function receives the first moment of the PSS, is properly received the SSS obtains the first time interval, according to successful reception The second moment of the SSS and the third moment for being properly received the FID obtain second time interval.Optionally, which can root According to first time interval and the second time interval and preconfigured ratio of uplink subframe to downlink subframe relationship, the uplink and downlink of the system is determined Subframe proportion.

Therefore, the communication means of the M2M system based on TDD of the embodiment of the present invention can be realized using TDD frequency spectrum resource M2M application, also, UE can determine in advance the ascending-descending subframes of the system according to first time interval and the second time interval Proportion, without determining the ratio of uplink subframe to downlink subframe of the system by SIB information, and then can be according to uplink and downlink of the system Frame proportion, takes corresponding dormancy strategy to reduce power consumption.

It should be understood that in embodiments of the present invention, which can also be according to successful reception PSS to the successful reception FID Third time interval and the first time interval determine the ratio of uplink subframe to downlink subframe of the system；Alternatively, the UE can be with root The ratio of uplink subframe to downlink subframe that the system is determined according to second time interval and the third time interval, in other words, as long as the UE It can be matched according to the ascending-descending subframes that the relationship at first moment, second moment and the third moment can uniquely determine the system Than.

Optionally, in embodiments of the present invention, which receives the primary synchronization signal that base station is sent, reception failure, then should UE receives the primary synchronization signal of base station transmission again in next superframe；Similarly, which receives the auxiliary of base station transmission Synchronization signal, reception failure receive the primary synchronization signal of base station transmission again in next superframe, reacquire and are properly received PSS and the first time interval for being properly received the SSS；When frame number detects failure, which no longer needs to re-start major-minor It is synchronous, the frame number of base station transmission need to be only received again in next superframe, carries out frame number detection again, therefore, at After function receives the SSS, it is possible to which the time span that interval is greater than superframe is just properly received the frame number.

Optionally, in embodiments of the present invention, as shown in figure 3, the user equipment according to the first time interval and this Two time intervals determine the ratio of uplink subframe to downlink subframe of the system, comprising:

S1310 obtains the duration T of the first time interval_PSFor subframe duration T_sfMultiple A；

S1320 obtains the duration T of second time interval_FSFor subframe duration T_sfMultiple B；

The A and B is substituted into pre-set ratio of uplink subframe to downlink subframe relationship, determines the uplink and downlink of the system by S1330 Subframe proportion；

Specifically, after the UE obtains the first time interval and second time interval, the UE obtain this first when Between the duration T that is spaced_PSFor subframe duration T_sfMultiple A, obtain the duration T of second time interval_FSFor subframe duration T_sf Multiple B, then the A and the B are substituted into pre-set ratio of uplink subframe to downlink subframe relationship, so that it is determined that the system up and down Row subframe proportion.The pre-set ratio of uplink subframe to downlink subframe relationship may include: A_i, B_i, the ascending-descending subframes of correspondence system match Than for C_i:D_i；Wherein, the A_i, the B_i, the C_i, the D_iAnd the i is positive integer, which is the A_iAn occurrence, the B be should B_iAn occurrence.That is, comparing the preconfigured ratio of uplink subframe to downlink subframe after the UE gets parameter A and B A in relationship_iAnd B_i, if there is one group of A_i=A and B_i=B, then it is determined that this group of A_i, B_iCorresponding C_i:D_iFor the upper of the system Downlink subframe proportion.

If the first time interval is not the duration of the subframe of integral multiple, that is, the MT_sf< T_PS< (M+ 0.5)·T_sfOr (M+0.5) T_sf≤T_PS< (M+1) T_sf, wherein M is positive integer, optionally, in the T_PSMeet MT_sf< T_PS< (M+0.5) T_sfWhen, it can be by the T_PSBe converted to MT_sf, in the T_PSMeet (M+0.5) T_sf≤T_PS< (M+1) T_sfWhen, it can be by first time interval T_PSBe converted to (M+1) T_sf, then again with the T after conversion_PSTo subframe duration T_sfIt asks Ratio obtains A, for example, T_sf=1ms, T_PSWhen=4.6ms, the 4.5T_sf<T_PS<5T_sf, by the T_PSBe converted to 5T_sf, then right The T_sfRatio is sought, can determine A=5.It similarly, can also if second time interval is not the subframe duration of integral multiple yet To obtain B using similar processing method, which is not described herein again.

In embodiments of the present invention, the duration T of the acquisition second time interval_FSFor subframe duration T_sfMultiple B packet It includes:

Due to after being properly received the SSS, it is possible to which the time span that interval is greater than superframe is just properly received the FID, In In this case, the duration T of the acquisition second time interval_FSFor subframe duration T_sfMultiple B include:

For example, when superframe when a length of 80ms, at this point, the duration T of the subframe_sfFor 1ms, if second time interval T_FS=4ms, less than the duration of superframe, then parameter B is the T_FSWith the T_sfRatio be 4；If second time interval is 84ms, greater than the duration of superframe, at this point, by the T_FSTo 80ms modulus, that is, by the T_FSIt is determined divided by the remainder that 80ms is obtained For T '_FS, i.e. the T '_FS=4ms, then by the T '_FSWith T_sfRatio be determined as B, that is, B is equal to 4.

Optionally, the A_i, B_i, the ratio of uplink subframe to downlink subframe of correspondence system is C_i:D_iInclude:

The namely A_i, B_iWith the ratio of uplink subframe to downlink subframe C of the system_i:D_iCorresponding relationship can be as shown in table 2.

2 (A of table_i、B_iWith ratio of uplink subframe to downlink subframe C_i:D_iCorresponding relationship)

i	A_i	B_i	C_i:D_i
				1	5	4	2:3
2	4	4	3:2
				3	3	4	4:1
4	5	3	5:5
				5	5	1	7:3
6	4	1	8:2
				7	3	1	9:1

For example, if the UE is after obtaining the first time interval and the second time interval, at the first time according to this Interval and the second time interval, after determining A=5, B=4, then substitute into the corresponding relationship in the table 2 for the A and B, can be true Determine A₁=5=A, B₁=4=B may thereby determine that the ratio of uplink subframe to downlink subframe of the system is C₁:D₁=2:3；For another example at this UE is according to the first time interval and the second time interval, when determining A=4, B=1, substitutes into the corresponding relationship in the table 2, can be with Determine A₆=4=A, B₆=1=B may thereby determine that the ratio of uplink subframe to downlink subframe of the system is C₆:D₆=8:2.

It should be understood that the A_i, B_iWith the ratio of uplink subframe to downlink subframe C of the system_i:D_iCorresponding relationship be not unique, if It, can be according to the A in the corresponding relationship_i, B_iThe ratio of uplink subframe to downlink subframe of system is uniquely determined, the embodiment of the present invention is only with table 2 In corresponding relationship for be described, the embodiment of the present invention can also have other corresponding relationships.For example, on this is preconfigured Downlink subframe proportion relation can also be as shown in table 3.

3 (A of table_i、B_iWith ratio of uplink subframe to downlink subframe C_i:D_iCorresponding relationship)

i	A_i	B_i	C_i:D_i
				1	5	4	2:3
2	4	1	3:2
				3	3	2	4:1
4	5	3	5:5
				5	5	1	7:3
6	4	2	8:2
				7	3	1	9:1

Due to same one group of A_i, B_iValue may correspond to different ratio of uplink subframe to downlink subframe C_i:D_i, for example, in table 2, The A₆=4, B₆The ratio of uplink subframe to downlink subframe C of=1 corresponding system₆:D₆For 8:2, and in table 3, the A₂=4, B₂=1 is corresponding The ratio of uplink subframe to downlink subframe C of system₂:D₂For 3:2, therefore, this just needs UE to obtain the preconfigured ascending-descending subframes in advance to match Than relationship, in order to be pre-configured with according to this after the UE determines A and B according to the first time interval and the second time interval Ratio of uplink subframe to downlink subframe relationship determine the ratio of uplink subframe to downlink subframe of the system.

Fig. 4 is the schematic flow of the communication means 4000 of the M2M system according to another embodiment of the present invention based on TDD Figure.The logical of the M2M system according to an embodiment of the present invention based on TDD will be described in detail by taking flow chart shown in Fig. 4 as an example below Letter method 4000.

In S4100, UE receives the PSS that base station is sent, and after receiving successfully, process proceeds to S4200, otherwise, receives and loses It loses, re-executes S4100, that is, the UE receives the PSS of base station transmission in the first frame of next superframe again.

In S4200, which receives the SSS of base station transmission, receives successfully, process proceeds to S4300, otherwise process weight S4100 newly is returned to, which receives the PSS of base station transmission again in next superframe.

In S4300, first time interval T is obtained in the UE_PS, which is to be properly received SSS to success Receive the time interval of the SSS.

In S4400, which receives the FID of base station transmission, receives successfully, and process proceeds to S4500, otherwise, Again the FID signal that base station is sent is received, without carrying out the major-minor synchronization of system, that is to say, that re-execute in next superframe S4400 no longer needs to execute the operation in S4100~S4300, therefore, after being properly received the SSS, may be spaced and be greater than one The time span of superframe is just properly received the frame number.

In S4500, which obtains the second time interval T_FS, which is to be properly received the SSS to success Receive the time interval of the FID.

In S4600, the duration T of the first time interval is obtained_PSFor subframe duration T_sfMultiple A.

If the T_PSFor the subframe duration of integral multiple, then A is T_PSWith subframe duration T_sfRatio；If the T_PSIt is not The subframe duration of integral multiple, then first by the T_PSThe subframe duration of integral multiple is converted to, then again to subframe duration T_sfSeek ratio Value, conversion method is with described above, and which is not described herein again.

In S4700, judge whether second time interval is greater than the time span of the superframe of the systemic presupposition, if not Greater than the time span of the superframe of the systemic presupposition, process proceeds to S4800, and otherwise, process proceeds to S4900.

In S4800, the T_FSNo more than the time span of the superframe of the systemic presupposition, determine that the B is the T_FSWith the T_sf's Ratio.

With the T_PSIt is similar, if the T_FSIt is not the subframe duration of integral multiple, it is also desirable to first by the T_FSBe converted to integral multiple Subframe duration, conversion method and T_PSConversion method it is similar, which is not described herein again.

In S4900, the T_FSGreater than the time span of the superframe of the systemic presupposition, then by the T_FSTo the time of the superframe Length modulus obtains T '_FS, determine that the B is the T '_FSWith T_sfRatio.

A length of 80ms when with superframe, subframe duration T_sfFor 1ms, if second time interval is 84ms, it is greater than superframe Duration, at this point, by the T_FSTo 80ms modulus, that is, by the T_FSIt is determined as T ' divided by the remainder that 80ms is obtained_FS, i.e. the T '_FS =4ms, then by the T '_FSWith T_sfRatio be determined as B, that is, B is equal to 4.

In S5000, the uplink and downlink of the system is determined according to the A and B and preconfigured ratio of uplink subframe to downlink subframe relationship Subframe proportion.

Specifically, the A and B is substituted into preconfigured ratio of uplink subframe to downlink subframe relationship, determine that there are one group of A_i= A, B_iWhen=B, then this group of A_i, B_iCorresponding C_i:D_iThe as ratio of uplink subframe to downlink subframe of the system.

For example, the preconfigured ratio of uplink subframe to downlink subframe relationship can determine the A=5, B=in the UE for shown in table 2 When 1, substituted into the table 2 in preconfigured ratio of uplink subframe to downlink subframe relationship, it can be found that A₅=5=A and B₅=1=B, The ratio of uplink subframe to downlink subframe that may thereby determine that the system is C₅:D₅=7:3.

Optionally, in embodiments of the present invention, the communication means 1000 further include:

Specifically, which, can be according to uplink and downlink of the system after determining the ratio of uplink subframe to downlink subframe of the system Frame proportion determines which subframe is sub-frame of uplink, so as to formulate corresponding dormancy strategy, to reach the mesh for reducing power consumption , optionally, which can choose the subframe for not sending uplink information in the sub-frame of uplink and carries out suspend mode, for example, being used for The UE of remote meter reading determines No. 2, No. 3, No. 4, No. 7 and 8 work songs after the ratio of uplink subframe to downlink subframe for obtaining the system is 5:5 Frame is sub-frame of uplink, can choose and carries out suspend mode without the subframe of reported data in above-mentioned sub-frame of uplink, to reach reduction function The purpose of consumption.

Above in association with Fig. 2 to Fig. 4, from the angle of UE, to the logical of the M2M system according to an embodiment of the present invention based on TDD Letter method is described, below with reference to Fig. 5 and Fig. 6, angle from base station, to according to an embodiment of the present invention based on TDD's The communication means of M2M system is described.

Fig. 5 shows the schematic flow of the communication means 5000 of the M2M system according to an embodiment of the present invention based on TDD Figure, this method 5000 can be executed by base station, which includes:

S5100, base station determine primary synchronization signal PSS, secondary synchronization signal SSS and frame according to the frame structure of the systemic presupposition Position of the transmission subframe of number FID in frame；

S5200, the base station are set to user respectively in the transmission subframe position in the frame of the PSS, the SSS and the FID Standby UE sends the PSS, the SSS and the FID, in order to which the UE determines the system according to first time interval and the second time interval Ratio of uplink subframe to downlink subframe, which is determined by the transmissions subframe position in the frame of the PSS and the SSS, this Second time interval is determined by the transmission subframe position in the frame of the SSS and the FID.

Specifically, frame structure of the base station according to systemic presupposition, determines the hair of primary synchronization signal, secondary synchronization signal and frame number Position of the subframe in frame is sent, then in the transmission subframe position in the frame of the PSS, the SSS and the FID, respectively to UE The PSS, the SSS and the FID are sent, is somebody's turn to do in order to which the UE is determined according to position of the transmission subframe of the PSS and SSS in frame First time interval determines second time interval according to position of the transmission subframe of the SSS and FID in frame, then root The ratio of uplink subframe to downlink subframe of the system is determined according to the first time interval and second time interval.Namely the base station passes through control Position of the transmission subframe of the PSS, the SSS and the FID in frame is made, enables to the UE according to the first time interval of acquisition The ratio of uplink subframe to downlink subframe of the system is determined with the second time interval.By taking ratio of uplink subframe to downlink subframe 3:2 as an example, which can be The 0 work song frame and 1 work song frame of first frame of superframe send the PSS, send the SSS in 4 work song frames of the frame and 5 work song frames, The FID is sent in 9 work song frames of the frame, then it is in 1 work song frame that the UE, which is properly received the PSS, being properly received the SSS is 5 Work song frame, the UE are properly received the PSS to the first time interval namely 5 work song frames and 1 work song frame for being properly received the SSS Time interval is 4T_sf, similarly, being properly received the FID is in 9 work song frames, then being properly received the SSS to successful reception The second time interval of the FID namely time interval of 9 work song frames and 5 work song frames is 4T_sf, optionally, which can be with The corresponding relationship of the ratio of uplink subframe to downlink subframe of first time interval and second time interval and the system is pre-configured with to UE. It may include in first time interval in the preconfigured ratio of uplink subframe to downlink subframe relationship is 4T_sf, the second time interval be 4T_sfWhen, the ratio of uplink subframe to downlink subframe of corresponding system is 3:2, then the UE can be 4T obtaining first time interval_sf, Two time intervals are 4T_sfWhen, according to the preconfigured ratio of uplink subframe to downlink subframe relationship, determine that the ascending-descending subframes of the system are matched Than for 3:2.As long as the base station is by controlling position of the transmission subframe of PSS, the SSS and the FID in frame, so that in others Under ratio of uplink subframe to downlink subframe, the first time interval and second time interval and above-mentioned two value are not all the same.

Therefore, the communication means of the M2M system based on TDD of the embodiment of the present invention can be realized using TDD frequency spectrum resource M2M application, also, base station can enable UE to mention by controlling position of the transmission subframe of PSS, SSS and FID in frame The ratio of uplink subframe to downlink subframe of the preceding determination system, without determining the ratio of uplink subframe to downlink subframe of the system by SIB information, in turn Corresponding dormancy strategy can be taken to reduce power consumption according to the ratio of uplink subframe to downlink subframe of the system.

Optionally, in embodiments of the present invention, as shown in fig. 6, the base station is determined according to the ratio of uplink subframe to downlink subframe of system Primary synchronization signal PSS, the sending instant of secondary synchronization signal SSS and frame number FID, comprising:

S5110, if the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition be 2:3, it is determined that frame 0 work song frame and 1 work song frame sends the PSS, the SSS is sent in 5 work song frames of the frame and 6 work song frames, in 0 work song frame of next frame of the frame The FID is sent, wherein the frame includes 10 subframes；Alternatively,

S5120, if the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition be 3:2, it is determined that frame 0 work song frame and 1 work song frame sends the PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 9 work song frames of the frame, Wherein the frame includes 10 subframes；Alternatively,

S5130, if the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition be 4:1, it is determined that frame 0 work song frame and 1 work song frame sends the PSS, sends the SSS in 3 work song frames of the frame and 4 work song frames, sends the FID in 8 work song frames of the frame, Wherein the frame includes 10 subframes；Alternatively,

S5140, if the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition be 5:5, it is determined that frame 0 work song frame and 1 work song frame sends the PSS, sends the SSS in 5 work song frames of the frame and 6 work song frames, sends the FID in 9 work song frames of the frame, Wherein the frame includes 10 subframes；Alternatively,

S5150, if the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition be 7:3, it is determined that frame 0 work song frame and 1 work song frame sends the PSS, sends the SSS in 5 work song frames of the frame and 6 work song frames, sends the FID in 7 work song frames of the frame, Wherein the frame includes 10 subframes；Alternatively,

S5160, if the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition be 8:2, it is determined that frame 0 work song frame and 1 work song frame sends the PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 6 work song frames of the frame, Wherein the frame includes 10 subframes；Alternatively,

S5170, if the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition be 9:1, it is determined that frame 0 work song frame and 1 work song frame sends the PSS, sends the SSS in 3 work song frames of the frame and 4 work song frames, sends the FID in 5 work song frames of the frame, Wherein the frame includes 10 subframes.

Specifically, if the base station can control in 0 work song frame of frame and 1 when the ratio of uplink subframe to downlink subframe of system is 2:3 Work song frame sends the PSS, sends the SSS in 5 work song frames of the frame and 6 work song frames, in the 0 work song frame hair of next frame of the frame The FID is given, then it is in 1 work song frame that the UE, which is properly received the PSS, being properly received the SSS is in 6 work song frames, this is at the first time Between be divided into the time interval 5T of 6 work song frames and 1 work song frame_sf, similarly, be properly received the SSS to be properly received the FID second Time interval is 4T_sf；

If the ratio of uplink subframe to downlink subframe of system is 3:2, which be can control in 0 work song frame of frame and the transmission of 1 work song frame The PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 9 work song frames of the frame, then UE success Receiving the PSS is in 1 work song frame, and being properly received the SSS is in 5 work song frames, which is 5 work song frames and 1 work song The time interval 4T of frame_sf, similarly, be properly received the SSS to be properly received the FID the second time interval be 4T_sf；

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 4:1, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 3 work song frames of the frame and 4 work song frames, sends the FID in 8 work song frames of the frame, then should UE be properly received the PSS be in 1 work song frame, be properly received the SSS be in 4 work song frames, the first time interval be 4 work song frames and The time interval 3T of 1 work song frame_sf, similarly, be properly received the SSS to be properly received the FID the second time interval be 4T_sf；

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 5:5, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 5 work song frames of the frame and 6 work song frames, sends the FID in 9 work song frames of the frame, then should UE be properly received the PSS be in 1 work song frame, be properly received the SSS be in 6 work song frames, the first time interval be 6 work song frames and The time interval 5T of 1 work song frame_sf, similarly, be properly received the SSS to be properly received the FID the second time interval be 3T_sf；

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 7:3, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 5 work song frames of the frame and 6 work song frames, sends the FID in 7 work song frames of the frame, then should UE be properly received the PSS be in 1 work song frame, be properly received the SSS be in 6 work song frames, the first time interval be 6 work song frames and The time interval 5T of 1 work song frame_sf, similarly, be properly received the SSS to be properly received the FID the second time interval be 1T_sf；

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 8:2, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 6 work song frames of the frame, then should UE be properly received the PSS be in 1 work song frame, be properly received the SSS be in 5 work song frames, the first time interval be 5 work song frames and The time interval 4T of 1 work song frame_sf, similarly, be properly received the SSS to be properly received the FID the second time interval be 1T_sf；

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 9:1, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 3 work song frames of the frame and 4 work song frames, sends the FID in 5 work song frames of the frame, then should UE be properly received the PSS be in 1 work song frame, be properly received the SSS be in 4 work song frames, the first time interval be 4 work song frames and The time interval 3T of 1 work song frame_sf, similarly, be properly received the SSS to be properly received the FID the second time interval be 1T_sf；

Generally speaking, the base station is by controlling position of the transmission subframe in frame of PSS, SSS and the FID, enables UE Enough ratio of uplink subframe to downlink subframe that the system is determined according to first time interval, the second time interval of acquisition, optionally, the base station The ratio of uplink subframe to downlink subframe relationship of the system can be pre-configured with to UE, then the UE can be between obtaining the first time Every with after the second time interval, according to the first time interval and second time interval and preconfigured uplink and downlink Frame proportion relation determines the ratio of uplink subframe to downlink subframe of the system.

Optionally, in embodiments of the present invention, which determines primary synchronization signal according to the ratio of uplink subframe to downlink subframe of system PSS, the sending instant of secondary synchronization signal SSS and frame number FID, further includes:

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 3:2, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 6 work song frames of the frame, wherein should Frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 4:1, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 3 work song frames of the frame and 4 work song frames, sends the FID in 6 work song frames of the frame, wherein should Frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 8:2, it is determined that in 0 work song frame of frame and 1 work song Frame sends the PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 7 work song frames of the frame, wherein should Frame includes 10 subframes；Alternatively,

It should be understood that position of the transmission subframe of PSS, SSS and the FID in frame is not uniquely, as long as the UE being capable of root It, can after position acquisition first time interval and second time interval of the transmission subframe of PSS, SSS and the FID in frame According to this at the first time every the ratio of uplink subframe to downlink subframe for uniquely determining the system with second time interval.

Therefore, the communication means of the M2M system based on TDD of the embodiment of the present invention can be realized using TDD frequency spectrum resource M2M communication, also, base station can enable UE to mention by controlling position of the transmission subframe of PSS, SSS and FID in frame The ratio of uplink subframe to downlink subframe of the preceding determination system, without determining the ratio of uplink subframe to downlink subframe of the system by SIB information, in turn Corresponding dormancy strategy can be taken to reduce power consumption according to the ratio of uplink subframe to downlink subframe of the system.

Above in association with Fig. 2 to Fig. 6, it is based on respectively from the angle of user equipment and base station to according to an embodiment of the present invention The communication means of the M2M system of TDD is described in detail；Below in conjunction with Fig. 7, the angle of equipment interaction from communication system The communication means of M2M system according to an embodiment of the present invention based on TDD is introduced, which includes user equipment The base station and.

Fig. 7 shows the schematic flow chart of the communication means of the M2M system according to an embodiment of the present invention based on TDD.

In S210, base station determines primary synchronization signal PSS according to the frame structure of the systemic presupposition, secondary synchronization signal SSS and Position of the transmission subframe of frame number FID in frame.

Optionally, in embodiments of the present invention, which determines primary synchronization signal according to the frame structure of the systemic presupposition Position of the transmission subframe of PSS, secondary synchronization signal SSS and frame number FID in frame, comprising:

It should be understood that position of the transmission subframe of PSS, SSS and the FID in frame is not uniquely, as long as the base station passes through Position of the transmission subframe of PSS, SSS and the FID in frame is controlled, enables the UE according to successful reception PSS to success Receive the first time interval of the SSS, and be properly received the SSS to be properly received the FID the second time interval it is uniquely true The ratio of uplink subframe to downlink subframe of the fixed system.

In S220, the base station in the transmission subframe position in the frame of the PSS, the SSS and the FID, respectively to User equipment (UE) sends the PSS, the SSS and the FID.

PSS, SSS and FID of base station transmission are received in S230, the UE, obtains first time interval and between the second time Every, the first time interval be to be properly received the PSS to the time interval for being properly received the SSS, second time interval at Function receives the SSS to the time interval for being properly received the FID.

Determine that the ascending-descending subframes of the system are matched according to the first time interval and the second time interval in S240, the UE Than.

Optionally, which determines that the ascending-descending subframes of the system are matched according to the first time interval and second time interval Than, comprising:

Specifically, after the UE obtains the first time interval and second time interval, the UE obtain this first when Between the duration T that is spaced_PSFor subframe duration T_sfMultiple A, obtain the duration T of second time interval_FSFor subframe duration T_sf Multiple B, then the A and the B are substituted into pre-set ratio of uplink subframe to downlink subframe relationship, so that it is determined that the system up and down Row subframe proportion.In other words, after the UE gets parameter A and B, the preconfigured ratio of uplink subframe to downlink subframe relationship is compared In A_iAnd B_i, if there is one group of A_i=A and B_i=B, then it is determined that this group of A_i, B_iCorresponding C_i:D_iFor the uplink and downlink of the system Subframe proportion.

It is carried out above in association with communication means of the Fig. 2 to Fig. 7 to the M2M system according to an embodiment of the present invention based on TDD Detailed introduction is situated between below in conjunction with device of the Fig. 8 to Figure 12 to the M2M system according to an embodiment of the present invention based on TDD It continues.

Fig. 8 shows the schematic block diagram of user equipment 500 according to an embodiment of the present invention, which includes:

Receiving module 510, for receiving primary synchronization signal PSS, secondary synchronization signal SSS and the frame number FID of base station transmission；

Module 520 is obtained, for obtaining first time interval and the second time interval, which is the reception Module 510 be properly received the PSS to be properly received the SSS time interval, second time interval for the receiving module 510 at Function receives the SSS to the time interval for being properly received the FID；

Determining module 530, the first time interval and second time interval for being obtained according to the acquisition module 520 Determine the ratio of uplink subframe to downlink subframe of the system.

Specifically, receiving module 510 receives primary synchronization signal PSS, secondary synchronization signal SSS and the frame number that base station is sent FID obtains module 520 and obtains first time interval and the second time interval, which is to be properly received the PSS to arrive It is properly received the time interval of the SSS, which is to be properly received between the time of the SSS to the successful reception FID Every the first time interval and second time interval that then the determining module 530 is obtained according to the acquisition module 520 determine should The ratio of uplink subframe to downlink subframe of system.Optionally, which can be according to the first moment, successfully for being properly received the PSS The second moment for receiving the SSS obtains the first time interval, should according to the second moment and successful reception that are properly received the SSS The third moment of FID obtains second time interval.Optionally, which can be according to first time interval and Two time intervals and preconfigured ratio of uplink subframe to downlink subframe relationship, determine the ratio of uplink subframe to downlink subframe of the system.

Therefore, the user equipment of the embodiment of the present invention, can be according to first time interval and the second time interval, in advance really The ratio of uplink subframe to downlink subframe of the fixed system, without determining the ratio of uplink subframe to downlink subframe of the system by SIB information, and then can be with According to the ratio of uplink subframe to downlink subframe of the system, take corresponding dormancy strategy to reduce power consumption.

Optionally, in embodiments of the present invention, which receives the primary synchronization signal that base station is sent, and receives and loses After losing, the primary synchronization signal of base station transmission is received again in next superframe；Similarly, which, which receives, is somebody's turn to do The secondary synchronization signal that base station is sent after reception failure, receives the primary synchronization signal of base station transmission again in next superframe；In When frame number detection failure, which no longer needs to carry out major-minor synchronization, only need to receive again base station in next superframe The frame number of transmission, again carry out frame number detection, therefore, after being properly received the SSS, it is possible to be spaced greater than superframe when Between length be just properly received the frame number.

Optionally, in embodiments of the present invention, which includes:

Specifically, after the acquisition module 520 obtains the first time interval and second time interval, this first is obtained Unit is taken to obtain the duration T of the first time interval_PSFor subframe duration T_sfMultiple A, second acquisition unit obtain this second The duration T of time interval_FSFor subframe duration T_sfMultiple B, then the first determination unit by the A and the B substitution preset Ratio of uplink subframe to downlink subframe relationship in, so that it is determined that the ratio of uplink subframe to downlink subframe of the system, the pre-set ascending-descending subframes Proportion relation may include: A_i, B_i, the ratio of uplink subframe to downlink subframe of correspondence system is C_i:D_i；Wherein, the A_i, the B_i, the C_i, the D_i And the i is positive integer, which is the A_iAn occurrence, the B be the B_iAn occurrence.That is, getting After parameter A and B, which compares the A in the preconfigured ratio of uplink subframe to downlink subframe relationship_iAnd B_i, if there is One group of A_i=A and B_i=B, then it is determined that this group of A_i, B_iCorresponding C_i:D_iThe as ratio of uplink subframe to downlink subframe of the system.

In embodiments of the present invention, which is specifically used for:

Due to after being properly received the SSS, it is possible to which the time span that interval is greater than superframe is just properly received the FID, In In this case, which is also used to:

That is, after the value that the first acquisition unit and second acquisition unit get A and B, the first determining list Member substitutes into ratio of uplink subframe to downlink subframe relationship above, if there is one group of A_i=A, B_i=B, then first determination unit is true Fixed this group of A_i, B_iCorresponding ratio of uplink subframe to downlink subframe C_i:D_iThe as ratio of uplink subframe to downlink subframe of the system.

Optionally, in embodiments of the present invention, the user equipment 500 further include:

Sleep block, for determining sub-frame of uplink after determining the ratio of uplink subframe to downlink subframe of the system, so that the user The subframe that equipment does not send information in the sub-frame of uplink carries out suspend mode.

Specifically, after the ratio of uplink subframe to downlink subframe that the determining module 530 determines the system, which can root According to the ratio of uplink subframe to downlink subframe of the system, determine which subframe is sub-frame of uplink, so as to formulate corresponding dormancy strategy, To achieve the purpose that reduce power consumption, optionally, which, which can choose, does not send uplink information in the sub-frame of uplink Subframe carry out suspend mode.

User equipment 500 according to an embodiment of the present invention can correspond to the M2M system according to an embodiment of the present invention based on TDD UE in the communication means 1000 of system, and above and other operation and/or function of the modules in user equipment 500 point Not for the corresponding process for realizing aforementioned each method, for sake of simplicity, details are not described herein.

Fig. 9 shows the schematic block diagram of base station 600 according to an embodiment of the present invention, which includes:

Determining module 610 determines primary synchronization signal PSS, secondary synchronization signal for the frame structure according to the systemic presupposition Position of the transmission subframe of SSS and frame number FID in frame；

Sending module 620, in the transmission subframe position in the frame of the PSS, the SSS and the FID, respectively to Family equipment UE sends the PSS, the SSS and the FID, is somebody's turn to do in order to which the UE is determined according to first time interval and the second time interval The ratio of uplink subframe to downlink subframe of system, the first time interval are true by the transmission subframe position in the frame of the PSS and the SSS Fixed, which is determined by the transmission subframe position in the frame of the SSS and FID.

Specifically, frame structure of the determining module 610 according to systemic presupposition, determine primary synchronization signal, secondary synchronization signal and Position of the transmission subframe of frame number in frame, then sending module 620 is in the transmission subframe of the PSS, the SSS and the FID at this Position in frame sends the PSS, the SSS and the FID to UE respectively, in order to which the UE is according to transmission of the PSS and the SSS Position of the frame in frame determines the first time interval, and being determined according to position of the transmission subframe of the SSS and FID in frame should Then second time interval determines that the ascending-descending subframes of the system are matched according to the first time interval and second time interval Than.Namely the determining module 610 can be made by controlling position of the transmission subframe of the PSS, the SSS and the FID in frame Obtain the ratio of uplink subframe to downlink subframe that the UE determines the system according to the first time interval and the second time interval of acquisition.With uplink and downlink For subframe matches 3:2, which can determine to send in 0 work song frame of first frame of superframe and 1 work song frame and be somebody's turn to do PSS, sends the SSS in 4 work song frames of the frame and 5 work song frames, sends the FID in 9 work song frames of the frame, a length of when superframe When 80ms, then it is in 1 work song frame that the UE, which is properly received the PSS, being properly received the SSS is in 5 work song frames, then UE success The PSS, which is received, to the first time interval namely time interval of 5 work song frames and 1 work song frame for being properly received the SSS is 4T_sf, similarly, be properly received the FID be in 9 work song frames, then be properly received the SSS to be properly received the FID second The time interval namely time interval of 9 work song frames and 5 work song frames is 4T_sf, optionally, the first time interval and this second The corresponding relationship of the ratio of uplink subframe to downlink subframe of time interval and the system can be pre-configured with to UE.It is preconfigured up and down at this May include in row subframe proportion relation first time interval be 4T_sf, the second time interval be 4T_sfWhen, corresponding system Ratio of uplink subframe to downlink subframe is 3:2, then the UE can be 4T obtaining first time interval_sf, the second time interval be 4T_sfWhen, According to the preconfigured ratio of uplink subframe to downlink subframe relationship, determine that the ratio of uplink subframe to downlink subframe of the system is 3:2.The determining module As long as 610 by controlling position of the transmission subframe of PSS, the SSS and the FID in frame, so that in other ascending-descending subframes Under proportion, the first time interval and second time interval and above-mentioned two value are not all the same.

Therefore, the base station of the embodiment of the present invention, can be by controlling position of the transmission subframe of PSS, SSS and FID in frame It sets, UE is enabled to determine the ratio of uplink subframe to downlink subframe of the system in advance, without determining the upper and lower of the system by SIB information Row subframe proportion, and then corresponding dormancy strategy can be taken to reduce power consumption according to the ratio of uplink subframe to downlink subframe of the system.

Optionally, in embodiments of the present invention, which is specifically used for:

The determining module 610 enables the UE by controlling position of the transmission subframe in frame of PSS, SSS and the FID Enough ratio of uplink subframe to downlink subframe that the system is determined according to the first time interval, the second time interval of acquisition, optionally, at this After UE obtains the first time interval and the second time interval, the first time interval and the second time interval can be converted to To the ratio A and B of subframe duration, under above-mentioned different ratio of uplink subframe to downlink subframe, then first time of the UE according to acquisition There are the corresponding relationship in table 2, citing comes by interval and the second time interval A, B for determining and the ratio of uplink subframe to downlink subframe of the system It says, if the first time interval that the UE is obtained is 4T_sf, second time interval be 4T_sf, by the first time interval and After second time interval seeks ratio to subframe duration, A=4 is obtained, B=4, the corresponding relationship in substitution table 2 is known that A₂ =4, B₂=4, then the ratio of uplink subframe to downlink subframe of the system is this group of A₂, B₂Corresponding C₂:D₂=3:2.

Base station 600 according to an embodiment of the present invention can correspond to the M2D system according to an embodiment of the present invention based on TDD Base station in communication means 5000, and above and other operation and/or function of the modules in base station 600 respectively in order to The corresponding process for realizing aforementioned each method, for sake of simplicity, details are not described herein.

In addition, as shown in Figure 10, the embodiment of the invention also provides a kind of communication system 700, which includes User equipment 500 according to an embodiment of the present invention and base station according to an embodiment of the present invention 600.Wherein, implement according to the present invention The user equipment 500 of example can correspond in the communication means 1000 of the M2M system according to an embodiment of the present invention based on TDD UE, and above and other operation and/or function of the modules in user equipment 500 is respectively in order to realize aforementioned each side The corresponding process of method, for sake of simplicity, details are not described herein；Base station 600 according to an embodiment of the present invention can correspond to according to this hair Base station in the communication means 5000 of the M2D system based on TDD of bright embodiment, and the modules in base station 600 is upper It states with other operation and/or functions respectively in order to realize the corresponding process of aforementioned each method, for sake of simplicity, no longer going to live in the household of one's in-laws on getting married herein It states.

As shown in figure 11, the embodiment of the invention also provides a kind of user equipment 800, which includes processing Device 810, memory 820, bus system 830 and transceiver 840.Wherein, processor 810, memory 820 and transceiver 840 are logical It crosses bus system 830 to be connected, for storing instruction, the processor 810 is for executing the memory 820 storage for the memory 820 Instruction, with control transceiver 840 receive signal or send signal.Wherein, which is used to receive the master of base station transmission Synchronization signal PSS, secondary synchronization signal SSS and frame number FID；The processor 810 is for obtaining first time interval and the second time Interval, the first time interval are to be properly received the PSS to the time interval for being properly received the SSS, which is The SSS is properly received to the time interval for being properly received the FID；The processor 810 be also used to according to the first time interval and Second time interval determines the ratio of uplink subframe to downlink subframe of the system.

It should be understood that in embodiments of the present invention, which can be central processing unit (Central Processing Unit, referred to as " CPU "), which can also be other general processors, digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) or other programmable logic device, discrete gate Or transistor logic, discrete hardware components etc..General processor can be microprocessor or the processor can also be with It is any conventional processor etc..

The memory 820 may include read-only memory and random access memory, and to processor 810 provide instruction and Data.The a part of of memory 820 can also include nonvolatile RAM.For example, memory 820 can also be deposited Store up the information of device type.

The bus system 830 can also include power bus, control bus and status signal in addition to including data/address bus Bus etc..But for the sake of clear explanation, various buses are all designated as bus system 830 in figure.

During realization, each step of the above method can pass through the integrated logic circuit of the hardware in processor 810 Or the instruction of software form is completed.The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly at hardware Reason device executes completion, or in processor hardware and software module combine and execute completion.Software module can be located at random Memory, flash memory, read-only memory, the abilities such as programmable read only memory or electrically erasable programmable memory, register In the storage medium of domain maturation.The storage medium is located at memory 820, and processor 810 reads the information in memory 820, knot Close the step of its hardware completes the above method.To avoid repeating, it is not detailed herein.

Optionally, in embodiments of the present invention, which is also used to:

If the T_FSNo more than the time span of the superframe of the systemic presupposition, then by the T_FSWith the T_sfRatio be determined as this B；

Optionally, in embodiments of the present invention, which is also used to:

After determining the ratio of uplink subframe to downlink subframe of the system, sub-frame of uplink is determined, so that the user equipment is in the uplink The subframe for not sending information in subframe carries out suspend mode.

As shown in figure 12, the embodiment of the invention also provides a kind of base station 900, which includes processor 910, deposits Reservoir 920, bus system 930 and transceiver 940.Wherein, processor 910, memory 920 and transceiver 940 pass through total linear system System 930 is connected, and for storing instruction, which is used to execute the instruction of the memory 920 storage to the memory 920, with Transceiver 940 is controlled to receive signal or send signal.Wherein, which is used for the frame structure according to the systemic presupposition, really Determine position of the transmission subframe of primary synchronization signal PSS, secondary synchronization signal SSS and frame number FID in frame；The transceiver 940 is used for In the transmission subframe position in the frame of the PSS, the SSS and the FID, the PSS, the SSS are sent to user equipment (UE) respectively It should in order to which the UE determines according to first time interval and the second time interval the ratio of uplink subframe to downlink subframe of the system with the FID First time interval determines that second time interval is by the SSS by the transmission subframe position in the frame of the PSS and the SSS It is determined with the position of the transmission subframe of the FID in the frame.

The memory 920 may include read-only memory and random access memory, and to processor 910 provide instruction and Data.The a part of of memory 920 can also include nonvolatile RAM.For example, memory 920 can also be deposited Store up the information of device type.

The bus system 930 can also include power bus, control bus and status signal in addition to including data/address bus Bus etc..But for the sake of clear explanation, various buses are all designated as bus system 930 in figure.

During realization, each step of the above method can pass through the integrated logic circuit of the hardware in processor 910 Or the instruction of software form is completed.The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly at hardware Reason device executes completion, or in processor hardware and software module combine and execute completion.Software module can be located at random Memory, flash memory, read-only memory, the abilities such as programmable read only memory or electrically erasable programmable memory, register In the storage medium of domain maturation.The storage medium is located at memory 920, and processor 910 reads the information in memory 920, knot Close the step of its hardware completes the above method.To avoid repeating, it is not detailed herein.

It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, expression can deposit In three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B. In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".

It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention Process constitutes any restriction.

Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed The scope of the present invention.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.

It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention. And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims

1. a kind of communication means of the machine to machine M2M system based on Time Division Duplex TDD, which is characterized in that the communication party Method includes:

The user equipment obtains first time interval and the second time interval, and the first time interval is described in successful reception For PSS to the time interval for being properly received the SSS, second time interval is the successful reception SSS to successful reception institute State the time interval of FID；

The user equipment determines uplink and downlink of the system according to the first time interval and second time interval Frame proportion.

2. communication means according to claim 1, which is characterized in that the user equipment is according to the first time interval The ratio of uplink subframe to downlink subframe of the system is determined with second time interval, comprising:

Obtain the duration T of second time interval_FSFor the subframe duration T_sfMultiple B；

The A and B is substituted into pre-set ratio of uplink subframe to downlink subframe relationship, determines the ascending-descending subframes of the system Proportion；

The pre-set ratio of uplink subframe to downlink subframe relationship includes: A_i, B_i, the ratio of uplink subframe to downlink subframe of correspondence system is C_i:D_i； Wherein, the A_i, the B_i, the C_i, the D_iAnd the i is positive integer, the A is the A_iAn occurrence, institute Stating B is the B_iAn occurrence.

3. communication means according to claim 2, which is characterized in that the duration T for obtaining second time interval_FS For subframe duration T_sfMultiple B include:

If the T_FSNo more than the time span of the superframe of the systemic presupposition, then by the T_FSWith the T_sfRatio determine For the B.

4. communication means according to claim 2, which is characterized in that the duration T for obtaining second time interval_FS For subframe duration T_sfMultiple B include:

If the T_FSGreater than the time span of the superframe of the systemic presupposition, then by the T_FSThe time span of the superframe is taken Mould obtains T '_FS, by the T '_FSWith the T_sfRatio be determined as the B.

5. communication means according to any one of claim 2 to 4, the A_i, B_i, the ascending-descending subframes of correspondence system match Than for C_i:D_iInclude:

6. communication means according to any one of claim 1 to 4, which is characterized in that the communication means further include:

The user equipment determines sub-frame of uplink after the ratio of uplink subframe to downlink subframe for determining the system, in uplink The subframe for not sending information in frame carries out suspend mode.

7. a kind of communication means of the machine to machine M2M system based on Time Division Duplex TDD, which is characterized in that the communication party Method includes:

Base station determines primary synchronization signal PSS, the hair of secondary synchronization signal SSS and frame number FID according to the frame structure of the systemic presupposition Send position of the subframe in frame；

The base station is set to user respectively in position of the transmission subframe in the frame of the PSS, the SSS and the FID Standby UE sends the PSS, the SSS and the FID, in order to which the UE is true according to first time interval and the second time interval The ratio of uplink subframe to downlink subframe of the fixed system, the first time interval is by the transmission subframe of the PSS and SSS described Position in frame determines that second time interval is true by position of the transmission subframe of the SSS and FID in the frame It is fixed.

8. communication means according to claim 7, which is characterized in that the base station is according to the frame knot of the systemic presupposition Structure determines primary synchronization signal PSS, position of the transmission subframe of secondary synchronization signal SSS and FID in frame, comprising:

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 2:3, it is determined that in the 0 work song frame and 1 work song frame of frame The PSS is sent, the SSS is sent in 5 work song frames of the frame and 6 work song frames, in 0 work song frame of next frame of the frame The FID is sent, wherein the frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 3:2, it is determined that in the 0 work song frame and 1 work song frame of frame The PSS is sent, the SSS is sent in 4 work song frames of the frame and 5 work song frames, described in the 9 work song frames transmission of the frame FID, wherein the frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 4:1, it is determined that in the 0 work song frame and 1 work song frame of frame The PSS is sent, the SSS is sent in 3 work song frames of the frame and 4 work song frames, described in the 8 work song frames transmission of the frame FID, wherein the frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 5:5, it is determined that in the 0 work song frame and 1 work song frame of frame The PSS is sent, the SSS is sent in 5 work song frames of the frame and 6 work song frames, described in the 9 work song frames transmission of the frame FID, wherein the frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 7:3, it is determined that in the 0 work song frame and 1 work song frame of frame The PSS is sent, the SSS is sent in 5 work song frames of the frame and 6 work song frames, described in the 7 work song frames transmission of the frame FID, wherein the frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 8:2, it is determined that in the 0 work song frame and 1 work song frame of frame The PSS is sent, the SSS is sent in 4 work song frames of the frame and 5 work song frames, described in the 6 work song frames transmission of the frame FID, wherein the frame includes 10 subframes；Alternatively,

If the ratio of uplink subframe to downlink subframe of the frame structure of the systemic presupposition is 9:1, it is determined that in the 0 work song frame and 1 work song frame of frame The PSS is sent, the SSS is sent in 3 work song frames of the frame and 4 work song frames, described in the 5 work song frames transmission of the frame FID, wherein the frame includes 10 subframes.

9. a kind of user equipment characterized by comprising

Module is obtained, for obtaining first time interval and the second time interval, the first time interval is the reception mould Block is properly received the PSS to the time interval for being properly received the SSS, second time interval be the receiving module at Function receives the SSS to the time interval for being properly received the FID；

Determining module, the first time interval and second time interval for being obtained according to the acquisition module determine The ratio of uplink subframe to downlink subframe of machine to machine M2M system based on Time Division Duplex TDD.

10. user equipment according to claim 9, which is characterized in that the determining module includes:

Second acquisition unit, for obtaining the duration T of second time interval_FSFor the subframe duration T_sfMultiple B；

11. user equipment according to claim 10, which is characterized in that the second acquisition unit is specifically used for:

12. user equipment according to claim 10, which is characterized in that the second acquisition unit is also used to:

13. user equipment according to any one of claims 10 to 12, the A_i, B_i, the ascending-descending subframes of correspondence system Proportion is C_i:D_iInclude:

14. the user equipment according to any one of claim 9 to 12, which is characterized in that further include:

Sleep block, for determining sub-frame of uplink after the ratio of uplink subframe to downlink subframe that the determining module determines the system, So that the subframe that the user equipment does not send information in the sub-frame of uplink carries out suspend mode.

15. a kind of base station characterized by comprising

Determining module determines main same for the frame structure according to the machine to machine M2M systemic presupposition based on Time Division Duplex TDD Walk position of the transmission subframe of signal PSS, secondary synchronization signal SSS and frame number FID in frame；

Sending module, in position of the transmission subframe in the frame of the PSS, the SSS and the FID, respectively to User equipment (UE) sends the PSS, the SSS and the FID, in order to which the UE is according to first time interval and the second time Interval determines the ratio of uplink subframe to downlink subframe of the system, the first time interval by the PSS and SSS transmission subframe Position in the frame determines that second time interval is by the transmission subframe of the SSS and FID in the frame Position determines.

16. base station according to claim 15, which is characterized in that the determining module is specifically used for:

17. a kind of communication system, which is characterized in that including the user equipment according to any one of claim 9 to 14 and Base station according to claim 15 or 16.