CN101286780B

CN101286780B - System and method for implementing relay transmission

Info

Publication number: CN101286780B
Application number: CN200710091173A
Authority: CN
Inventors: 唐臻飞; 尚政; 李江
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-04-12
Filing date: 2007-04-12
Publication date: 2012-10-03
Anticipated expiration: 2027-04-12
Also published as: CN101286780A

Abstract

The invention provides a method for realizing relay transmission. The method comprises the steps that when a (2k)th hopping and a (2k plus 1)th hopping are determined to be not the last hopping, in m1 DLs in a sub-frame, the operations of a (2k)th relay station (RS) and a (2k plus 1)th RS are executed synchronously and signals are sent to the (2k plus 1)th RS; and in n1 ULs, the operations of the (2k plus 1)th RS and a (2k plus 2)th RS are executed synchronously and signals are sent to the (2k plus 2)th RS. Thereby, the transmission with two times of hopping in one sub-frame is realized. Only the time delay of N/2 TD-SCDMA sub-frames is required to realize N-time hopping of the relay transmission if the N is an even number; only the time delay of (N+1)/2 TD-SCDMA sub-frames is required to reach the last hopping if the N is an odd number. The invention also provides a communication system. By adopting the technical proposal of the invention, the time delay of reaching the last hopping in the N-time relay transmission is greatly shortened.

Description

A kind of system and method for realizing relay transmission

Technical field

The present invention relates to wireless communication technology, particularly a kind of system and method for realizing relay transmission.

Background technology

Along with express network technology and development of multimedia technology; 3-G (Generation Three mobile communication system) (3G), local multipoint distributed serice (LMDS), multiple spot multichannel distributed system technology (MMDS) and WiMax system wireless networks such as (WiMAX) undergo an unusual development rapidly; Wireless network evolves to packet-switch technology from circuit-switched technology just gradually, and various WiMAX access technologies also emerge in an endless stream.

Fig. 1 is the structural representation of legacy wireless communication system in the prior art.As shown in Figure 1, this system comprises: base station controller, base station (BS) and terminal (MS).

Wherein, under the control of base station controller, realize the communication between MS and the BS.In practical application, general wire transmission network through special use communicates between base station controller and the BS.

The 3G system can commence business based on the wireless communication system shown in above-mentioned Fig. 1; TD SDMA (TD-SCDMA) is time division duplex (TDD) technology of main flow among the 3G, and the system of future generation of TD-SCDMA is back 3-G (Generation Three mobile communication system)/the 4th third-generation mobile communication system (B3G/4G).If TD-SCDMA is dropped into commercial operation; Need on the frequency of national regulation, arrange the base station equipment of TD-SCDMA; Can let the adjacent colocation site frequently of TD-SCDMA and B3G/4G in order to save resource; Base station equipment is laid in same place by two systems, be operated in adjacent frequency, also just formed the adjacent colocation site frequently of two systems.

Fig. 1 a is the sketch map of the frame structure of TD-SCDMA in the prior art.Shown in Fig. 1 a,

In time, the signal of TD-SCDMA is divided into periodic time quantum.A basic time quantum is called radio frames, and the length of each radio frames is 10ms.Each radio frames is divided into the subframe of two equal in length, and the length of each subframe is 5ms.

The method of BS and MS transmission signals in a sub-frame is: in first descending time slot (DL), BS sends to MS with signal.Idle in protection time slot (GP), idle in descending pilot frequency time slot (DwPTS) and uplink pilot time slot (UpPTS), or carry out simultaneous operation.MS sends to BS with signal in ensuing three ascending time slots (UL).After the time span of idle second switching point, in ensuing three DL, BS sends to MS with signal.In addition, for each time slot and next time slot dividing are come, the free time goes out a period of time and forms protection at interval from time slot, and between DL and the DL, between DL and the UL, and the protection between UL and the UL at interval, and length is 12.5 μ s.MS and BS are in idle condition in these protections at interval.

Wherein, first switching point is the GP between DwPTS and UpPTS; Second switching point is to be positioned at the protection interval that the last length of UL is 12.5 μ s between UL and DL.The time span of DwPTS, GP and UpPTS is respectively: 75 μ s, 75 μ s and 125 μ s.Each DL and UL equal 675 μ s and deduct 12.5 μ s, equal 662.5 μ s.

To the frame structure shown in Fig. 1 a, if reduce between DL and the DL, between DL and the UL and the protection between UL and the UL at interval, perhaps remove these protections at interval, thereby formed the frame structure shown in Fig. 1 b.

Fig. 1 b is the sketch map of the frame structure of third generation affiliate (3GPP) Long Term Evolution (LTE) in the prior art.Frame structure shown in Fig. 1 b is the same with the frame structure of the TD-SCDMA shown in Fig. 1 a, difference only is to have reduced between DL and the DL, between DL and the UL and the protection between UL and the UL at interval.

Specific practice is: will protect at interval and be reduced to 9.375 μ s, DL and UL are 675 μ s-9.376 μ s=665.625 μ s so.Between DwPTS and UpPTS, the time span of first switching point still equals 75 μ s to first switching point equally; Between UL and DL and after UL, the time span of this second switching point equals 9.375 μ s to second switching point equally.Because reduced protection at interval, so reduced the reduction amplitude of system spectral efficiency.

Relaying technique is one of key technology of B3G/4G, can improve cell throughout through RS, increases the coverage of sub-district, reduces cost and operation cost that operator builds wireless network.Provide the system that supports relaying technique below:

Fig. 2 is a structural representation of supporting the wireless communication system of relaying in the prior art.As shown in Figure 2, this system comprises: base station controller, BS, relay station (RS) and MS.Wherein, RS comprises: RS1, RS2 and RS3, MS comprises: MS1, MS2, MS3 and MS4.

Wherein, MS1 within the coverage of BS, so BS can be directly and MS1 communicate.The residing position of MS2, MS3 and MS4 maybe be outside the direct coverage of BS, so BS sends signal through RS1 to MS2, or receives signal through RS1 from MS2.BS communicates through RS2 and MS3, communicates through RS3 and MS4.

In this system, the communication link between BS and the RS is called as repeated link; Communication link between BS and the MS, and the communication link between RS and the MS is called as access link.If BS directly sends to MS with signal, this communication mode is called as a jumping.BS is called as two jumpings through the mode that communicates between a RS and the MS, and for example, BS communicates through RS1 and MS2.RS is called as three jumpings through the mode that two RS and MS communicate, and the rest may be inferred, also has four jumpings, five jumpings etc., will become multi-hop greater than the communication mode of three jumpings, supports the system of two jumpings to be called as two jumping systems, and the system of support multi-hop is called as multihop system.

IEEE802.16j working group has carried out relatively comprehensively and the discussion of system relaying technique, and a lot of companies have also all proposed to support the structure of the frame of multi-hop relay, and these frames are called as the IEEE802.16j frame.Wherein more representational is the structure of the frame of Korea S Samsung proposition, can be referring to Fig. 3.Fig. 3 is a structural representation of supporting the frame of multi-hop in the prior art.

Figure shown in Fig. 3 comprises two frames: j frame and j+1 frame, the length of each frame is 5ms.Comprise in each frame: descending time slot (DL) subframe and ascending time slot (UL) subframe.DL is to receive to transmit to send transfer point (TTG) at interval to the switching point of UL, and UL is to send switching to receive transfer point (RTG) at interval to the switching point of DL.The system of whole support multi-hop comprises: can comprise a plurality of MS again under BS, a plurality of RS, base station and each RS.BS-＞MS representes that BS sends signal and gives MS, and RS1-＞RS2 representes that R1 sends signal and gives RS2.The RS that even number is jumped representes that RS is an even number, for example, and RS2, RS4, RS6 etc.; The RS of odd number of hops representes that RS is an odd number, for example, and RS1, RS3, RS5 etc.In DL subframe and UL subframe, subframe is divided into two parts: a part is as access link, that is, BS or RS send to MS with signal; Another part is as repeated link, that is, BS sends to RS with signal in this time slot, and perhaps RS sends to another RS with signal.

In j frame, in DL, the RS (2k) that even number is jumped sends to signal the RS (2k+1) of odd number of hops; In UL, the RS of odd number of hops (2k+1) sends to the RS (2k) that even number is jumped with signal.In the j+1 frame, in DL, the RS of odd number of hops (2k+1) sends to the RS (2k+2) that even number is jumped with signal; In UL, the RS (2k+2) that even number is jumped sends to the RS (2k+1) of odd number of hops with signal, so on down direction or up direction, in each frame, can only accomplish the transmission of a jumping.For example, in BS j frame, BS sends to RS1 with signal, and RS1 receives the signal that BS sends in the j frame of RS1, and we can regard BS as RS0 here.In the j+1 frame of RS1, RS1 could send to RS2 with the signal that receives.

For the system that a N jumps, BS will send to the MS that N jumps with signal, will postpone the length of N frame at least, that is, the signal that BS sends will postpone N*5ms could arrive the MS that N jumps.Be example with N=3 below, introduce the process that signal that BS sends arrives RS2 MS2 down, reach the delay that produces in this transmission course.BS sends to RS1 with signal in j frame, RS1 receives the signal that BS sends in this frame, and this process is called as the 0th and jumps.RS1 sends to RS2 with the signal that receives in j+1 frame, RS2 receives the signal that RS1 sends in this frame, and this process is called as the 1st and jumps.RS2 can will receive signal and send to MS2 in an ensuing j+2 frame, MS2 receives the signal that RS2 sends, and this process is called as the 2nd and jumps.The delay that the signal that BS sends has experienced 3 frames just arrives MS2,, arrives the delay that MS2 has passed through 15ms that is.Equally,, experience the delay of 2 frames, that is, postpone 10ms if BS will send to signal the MS of double bounce.

Fig. 4 be in the prior art with two jumping systems of TD-SCDMA system common station address and coexistence of adjacent frequency in the structural representation of frame.It is as shown in Figure 4,

At first BS or RS send to MS with signal, and BS sends to RS with signal more then.

Wherein, the length of synchronizing channel (SCH), relaying time slot and access slot, and the length of up commentaries on classics down conversion point (UDSP) is respectively 83.203125 μ s, 665.625 μ s and 9.375 μ s.The length of the up transfer point of descending commentaries on classics (DUSP) equals the descending protection of 248.046875 μ s-(T at interval _RGP1)-up protection is (T at interval _RGP2).To guarantee that simultaneously the moment that UDSP finishes will overlap with the moment that second switching point in the TD-SCDMA subframe finishes.Based on the structure of frame shown in Figure 4, be presented in below in the 3G that the supports relaying evolution system of future generation, communicate the structure of formed frame between BS, RS and the MS.

Fig. 4 a is a frame structure sketch map of between BS, RS1 and MS1, realizing communication based on frame structure shown in Figure 4.

The structure of the shown frame of Fig. 4 a is based on the structure of frame shown in Figure 4.The structure of the frame of the first behavior BS, the structure of the frame of the second behavior RS, the third line is the structure of the frame of MS.MS is the MS under the RS, and BS sends to MS through RS with signal.

In inserting ↓ 0～access ↓ 2, BS sends to MS with signal.

In relaying ↓ 3, BS sends to RS with signal, and the terminal is in idle condition.

In relaying ↓ 3, BS also can send to MS with signal, and the multiplexing of BS and RS running time-frequency resource can be quadrature, also can be non-orthogonal.

If the signal that BS sends will pass through double bounce and arrive MS, to promptly, postpone 10ms and arrive MS through the delay of two sub-frame in the middle of this.The time of delay of double bounce is identical with the time of delay in the frame structure shown in Figure 3 in this frame; In addition; With the multihop system of the 3G evolution system of future generation of TD-SCDMA system common station address and coexistence of adjacent frequency in, for example in the multihop system of B3G/4G, the time delay that arrives final jump is bigger equally.

It is thus clear that, in the prior art, in the TD-SCDMA system, and with the 3G of TD-SCDMA system common station address and coexistence of adjacent frequency evolution system of future generation in, the time delay of carrying out relay transmission is bigger.

Summary of the invention

Embodiments of the invention provide a kind of method that realizes relay transmission, can reduce the time delay of relay transmission through this method.

Embodiments of the invention provide a kind of communication system, can reduce the time delay of relay transmission through this system.

In order to reach above-mentioned first purpose; Embodiments of the invention provide a kind of method that realizes relay transmission; This method may further comprise the steps: jump when all being not final jump transmission signals in m-m1 descending time slot DL, or free time when definite 2k jumps with 2k+1; Idle in descending protection interval T RGP1; In m1 DL, 2k relay station RS and 2k+1 RS carry out simultaneous operation, and signal is sent to said 2k+1 RS; Idle in any terminal synchronizes channel SCH before the said m DL, or in the time span of said terminal SCH, carry out simultaneous operation;

Idle in the time span of the up transfer point DUSP of descending commentaries on classics;

Transmission signals in n-n1 ascending time slot UL, or idle; In up protection interval T _RGP2Middle idle; In n1 UL, 2k+1 RS and 2k+2 RS carry out simultaneous operation, and signal is sent to said 2k+2 RS; Idle in the time span of up commentaries on classics down conversion point UDSP;

Wherein, said m is the number of DL, and n is the number of UL; M1 is the number of downlink relay time slot, and m-m1 is the number of descending access slot, and n1 is the number of uplink relay time slot; N-n1 is the number of up access slot, and m1, n1 are the positive integer more than or equal to 1, and m and n are the positive integer more than or equal to 2; And m＞m1, n＞n1; K is the positive integer more than or equal to 0, and said 2k jumps the expression even number and jumps, and 2k+1 jumps next jumping that the said even number of expression is jumped; Said the 0th RS is base station BS, and 2k RS representes even number RS, and said 2k+1 RS representes the next RS of said 2k RS, and said 2k+2 RS representes the next RS of said 2k+1 RS;

A said m DL, a n UL, the time span of terminal SCH, T _RGP1, T _RGP2, DUSP the time span sum of time span and UDSP equal the time span of the sub-frame of TD SDMA TD-SCDMA.

In order to reach above-mentioned second purpose, embodiments of the invention provide a kind of communication system, and this system comprises: at least three RS, one or more MS;

Wherein a RS, the 2nd RS and the 3rd RS are that three adjacent RS, a said RS and the 2nd RS all are not last RS;

A said RS is used to judge whether oneself is final jump, when judgement is not final jump, in m-m1 DL, signal is sent to the MS under the RS covering, or be in idle condition; In m1 DL, carry out simultaneous operation with the 2nd RS, and signal is sent to said the 2nd RS; At T _RGP1In be in idle condition; Carry out simultaneous operation in the time span of any terminal SCH before m DL, or be in idle condition; In the time span of DUSP, be in idle condition; At T _RGP2In be in idle condition; In the time span of UDSP, be in idle condition;

Said the 2nd RS is used for receiving the signal that a RS sends at m1 DL; At T _RGP1In be in idle condition; Carry out simultaneous operation in the time span of any terminal SCH before m DL, or be in idle condition; In the time span of DUSP, be in idle condition; At T _RGP2In be in idle condition; In the time span of UDSP, be in idle condition; Judge whether oneself is final jump, when judgement is not final jump, in n1 ascending time slot UL, signal is sent to the 3rd RS; In n-n1 UL, receive the signal that the MS under the 2nd RS covering sends;

The 3rd RS is used for receiving the signal that said the 2nd RS sends at n1 UL;

MS under the one RS covers is used for receiving the signal that a RS sends at m-m1 DL;

MS under the 2nd RS covers is used at n-n1 UL signal being sent to the 2nd RS;

Wherein, said m is the number of DL, and n is the number of UL; M1 is the number of downlink relay time slot, and m-m1 is the number of descending access slot, and n1 is the number of uplink relay time slot; N-n1 is the number of up access slot, and m1, n1 are the positive integer more than or equal to 1, and m and n are the positive integer more than or equal to 2; And m＞m1, n＞n1;

A said m DL, a n UL, the time span of terminal SCH, T _RGP1, T _RGP2, DUSP and UDSP sum equal the time span of the sub-frame of TD-SCDMA.

Technical scheme through the embodiment of the invention can be found out, in a sub-frame, has realized the transmission of double bounce.Realize that N jumps relay transmission; If N is the time delay that even number only needs the subframe of N/2 TD-SCDMA; If N is an odd number, arrive the time delay that final jump only needs the subframe of (N+1)/2 TD-SCDMA, therefore significantly reduced the time delay that arrives final jump in the relay transmission.

Description of drawings

Fig. 1 is the structural representation of legacy wireless communication system in the prior art;

Fig. 1 a is the sketch map of the frame structure of TD-SCDMA in the prior art;

Fig. 1 b is the sketch map of the frame structure of third generation affiliate (3GPP) Long Term Evolution (LTE) in the prior art;

Fig. 2 is a structural representation of supporting the wireless communication system of relaying in the prior art;

Fig. 3 is a structural representation of supporting the frame of multi-hop in the prior art;

Fig. 4 be in the prior art with two jumping systems of TD-SCDMA system common station address and coexistence of adjacent frequency in the structural representation of frame;

Fig. 4 a is a frame structure sketch map of between BS, RS1 and MS1, realizing communication based on frame structure shown in Figure 4;

Fig. 5 is the schematic flow sheet of first preferred embodiment of method of the realization relay transmission of the embodiment of the invention;

Fig. 6 is the schematic flow sheet of second preferred embodiment of method of the realization relay transmission of the embodiment of the invention;

Fig. 6 a is first sketch map of frame structure of the realization multi-hop relay transmission of the embodiment of the invention;

Fig. 6 b is second sketch map of frame structure of the realization multi-hop relay transmission of the embodiment of the invention;

Fig. 6 c is the 3rd sketch map of frame structure of the realization multi-hop relay transmission of the embodiment of the invention;

Fig. 7 is the structural representation of the 3rd preferred embodiment of system of the realization relay transmission of the embodiment of the invention;

Fig. 8 is the structural representation of the 4th preferred embodiment of system of the realization relay transmission of the embodiment of the invention.

Embodiment

For making the object of the invention, technical scheme and advantage clearer, the present invention is made further detailed description below in conjunction with accompanying drawing.

Fig. 5 is the schematic flow sheet of first preferred embodiment of method of the realization relay transmission of the embodiment of the invention.As shown in Figure 5, comprise the steps:

It is to be noted that at first DL comprises: downlink relay time slot and descending access slot, UL comprises: uplink relay time slot and up access slot.M1 is the number of downlink relay time slot, and n1 is the number of uplink relay time slot, and m-m1 is the number of descending access slot, and n-n1 is the number of up access slot.

Step 510: in m-m1 descending access slot, BS sends to MS with signal, or idle, m1＜m.

In this step, in m-m1 descending access slot, BS sends to MS with signal, or idle method comprises following several kinds:

In m-m1 DL before m1 the downlink relay time slot, BS sends to MS with signal, or idle;

Or among the DL of the m-m1 after m1 downlink relay time slot, BS sends to MS with signal, or idle;

Or among the DL of the m-m1 between m1 downlink relay time slot, BS sends to MS with signal, or idle.

Wherein, m is the number of DL, and m1 is the number of downlink relay time slot, and m-m1 is the number of descending access slot, and m is the positive integer more than or equal to 2, and m1 is the positive integer more than or equal to 1, and m＞m1.Downlink relay time slot and descending access slot all belong to DL, and BS also can be the 0th RS.

Step 511: idle in any terminal SCH before m the DL, or in the time span of this terminal SCH, carry out the terminal synchronizes operation.

In this step, the method for carrying out terminal SCH can be:

When this subframe was the i sub-frame, in the time span of terminal SCH, terminal SCH was synchronized in the cell set.

When this subframe was the i+1 sub-frame, in the time span of this terminal SCH, terminal SCH was synchronized to a sub-district in the cell set, wherein, and i >=1, and be odd number.

Step 512: in the 0th jumping, BS is synchronized to RS1 in the time span of relaying SCH in m1 downlink relay time slot, signal is sent to RS1, and wherein, m1＜m, m are the number of DL.

In this step, m1 generally equals 1, and m1 also can get greater than 1 integer less than m certainly.

It is pointed out that relaying SCH be RS for next jumping be provided to this RS or BS synchronously, in this step, BS is synchronized to RS1.The method of relaying SCH can adopt major-minor synchronous mode, also can adopt the mode of once time synchronization.

Here related major-minor synchronous method is identical with the method for terminal SCH, and in the i sub-frame, in the time span of relaying SCH, relaying SCH is synchronized in the cell set.In the i+1 sub-frame, in the time span of this relaying SCH, relaying SCH is synchronized to a sub-district in the cell set, wherein, and i >=1, and be odd number.

The mode of so-called once time synchronization is meant that the RS of next jumping receives the BS of a jumping or the synchronizing signal that RS sends, and promptly can be synchronized to this BS or RS.

Step 513: idle in the time span of DUSP.

Step 514: in n-n1 up access slot, RS1 receives the signal that MS sends, or idle.

In this step, n-n1 up access slot is the part of UL, can be called as UL.In n-n1 access slot, signal or idle method that RS1 receives the MS transmission comprise following several kinds:

In n-n1 UL before n1 the uplink relay time slot, RS1 receives the signal that MS sends, or idle;

Or it is among the UL of the n-n1 after n1 uplink relay time slot, RS1 receives the signal that MS sends, or idle;

Or it is among the UL of the n-n1 between n1 uplink relay time slot, RS1 receives the signal that MS sends, or idle.MS in this step can be the MS under the RS1 covering.

Wherein, n is the number of UL, and n1 is the number of uplink relay time slot, and n-n1 is the number of up access slot, and n is the positive integer more than or equal to 2, and n1 is the positive integer more than or equal to 1, and n＞n1.Uplink relay time slot and up access slot all belong to UL, and RS1 is first RS.

Step 515: in the 1st jumping, in n1 uplink relay time slot, in the time span of relaying SCH, RS1 is synchronized to RS2, and signal is sent to RS2, and wherein, n1＜n, n are the number of UL.

In this step, the uplink relay time slot is the part of UL, therefore also can be called as UL.This method for synchronous is identical with method for synchronous in the step 512.

In addition, BS, RS1 and RS2 are at m1 downlink relay time slot and m-m1 the T that descending access slot is middle _RGP1Time span in idle, at the T of n1 uplink relay time slot with the individual up access slot of n-n1 centre _RGP2Time span in idle, the free time in the time span of the UDSP after n1 uplink relay time slot.

Step 520: judge that 2k jumps and the 2k+1 jumping is final jump, when being not final jump, execution in step 530; Deny the person, execution in step 540 when the 2k jumping is final jump, execution in step 550 when the 2k+1 jumping is final jump; Wherein, k is the positive integer more than or equal to 1.

2k representes the even number jumping, and 2k+1 representes next jumping that 2k jumps, i.e. odd number of hops.

Step 530: in m-m1 descending access slot, RS (2k) sends to MS with signal, or idle.

Wherein, m is the number of DL, and m1 is the number of downlink relay time slot, and m-m1 is the number of descending access slot, and m is the positive integer more than or equal to 2, and m1 is the positive integer more than or equal to 1, and m＞m1, and downlink relay time slot and descending access slot all belong to DL.MS is generally the MS under RS (2k) covering, and RS (2k) representes 2k RS.

Step 531: idle in any terminal SCH before m the DL, or in the time span of this terminal SCH, carry out simultaneous operation.

In this step, it is identical with step 511 to carry out synchronous method.

Step 532: in 2k jumped, in m1 downlink relay time slot, RS in the time span of relaying SCH (2k) was synchronized to RS (2k+1), and signal is sent to RS (2k+1).

The next RS of RS (2k+1) expression 2k, i.e. 2k+1 RS.

Step 533: idle in the time span of DUSP.

Step 534: in the up access slot of n-n1, receive the signal that MS sends, or idle.

Among n-n1 the UL before n1 up access slot, receive the signal that MS sends, or idle;

Or it is among n-n1 the UL after n1 up access slot, receive the signal that MS sends, or idle;

Or it is among n-n1 the UL between n1 up access slot, receive the signal that MS sends, or idle.

Wherein, n is the number of UL, and n1 is the number of uplink relay time slot, and n-n1 is the number of up access slot, and n is the positive integer more than or equal to 2, and n1 is the positive integer more than or equal to 1, and n＞n1.Uplink relay time slot and up access slot all belong to UL.

Step 535: in 2k+1 jumped, in n1 uplink relay time slot, RS (2k+1) was synchronized to RS (2k+2) in the time span of relaying SCH, and the signal that will in step 532, receive sends RS (2k+2).

The next RS of 2k+1 RS of RS (2k+2) expression, i.e. 2k+2 RS.

RS (2k), RS (2k+1) and RS (2k+2) are at m1 downlink relay time slot and m-m1 the T that descending access slot is middle _RGP1Time span in idle, at the T of n1 uplink relay time slot with the individual up access slot of n-n1 centre _RGP2Time span in idle, the free time in the time span of the UDSP after n1 uplink relay time slot.

Step 540:RS (2k) sends to MS or free time with signal in m DL.

Step 541: idle in the time span of DUSP.

Step 542: in n1 UL, RS (2k) receives the signal that RS (2k-1) sends.

Step 543: idle in n-n1 UL, or receive the signal that MS sends.

RS (2k) is at T _RGP1Time span in idle, at T _RGP2Time span in idle, idle in the time span of UDSP.

Step 550: in m1 downlink relay time slot, RS (2k+1) receives the signal that RS (2k) sends.

Step 551: idle in any terminal SCH before m the DL, or in the time span of this SCH, carry out simultaneous operation.

In this step, the method for carrying out simultaneous operation is identical with the method for execution simultaneous operation in the step 511.

Step 552: in m-m1 descending access slot, RS (2k+1) sends to MS with signal, or idle.

The MS here generally is the MS in RS (2k+1) coverage.

Step 553: idle in the time span of DUSP.

Step 554: in n up access slot, RS (2k+1) receives the signal that MS sends.

RS (2k+1) is at T _RGP1Time span in idle, at T _RGP2Time span in idle, idle in the time span of UDSP.

Can find out that from present embodiment execution in step 510～step 515 promptly forms the sub-frame in the relay transmission; Same execution in step 530～step 535 also forms the sub-frame in the relay transmission, and these can equal the time span of the subframe of a TD-SCDMA from the length of frame.Compare with the frame shown in Fig. 3, in the present embodiment, in each subframe, accomplish the transmission of double bounce in (5ms).Therefore, realize the relay transmission that N jumps,, promptly postpone (N/2) * 5ms,, arrive the delay that final jump only needs (N+1)/2 sub-frame, promptly postpone [(N+1)/2] * 5ms if N is an odd number if N is the delay that even number only needs the N/2 sub-frame.It is thus clear that, use the technical scheme of present embodiment can significantly reduce the time delay in the relay transmission, especially can reduce the time delay of multi-hop relay transmission greatly.

So far, end is to the introduction of first preferred embodiment shown in Figure 5.

In the embodiment shown in fig. 5, in DL, the number of downlink relay time slot is m1, and the number of descending access slot is m-m1; In UL, the number of uplink relay time slot is n1, and the number of up access slot is n-n1.In practical application, also have following situation, in DL, the number of downlink relay time slot can be m1+m2, and the number of so descending access slot is m-m1-m2; In UL, if the number of uplink relay time slot is n1+n2, the number of so up access slot is n-n1-n2.Wherein, m2 and n2 are the positive integer more than or equal to 1, and m1+m2＜m, n1+n2＜n.

In the present embodiment, the downlink relay time slot is respectively m1 and m2 is individual, and descending access slot is m-m1-m2.The uplink relay time slot is that n1 and n2 are individual, and up access slot is n-n1-n2.

Fig. 6 is the schematic flow sheet of second preferred embodiment of method of the realization relay transmission of the embodiment of the invention.As shown in Figure 6, comprise the steps:

Step 610: in the 0th jumping, in m-m1-m2 descending access slot, BS sends to MS with signal, or idle, m1+m2＜m.

In this step, in m-m1-m2 descending access slot, BS sends to MS with signal, or idle method comprises following several kinds:

In m-m1-m2 before m1 and m2 the downlink relay time slot descending access slot, BS sends to MS with signal, or idle;

Or in the descending access slot of the m-m1-m2 after m1 and m2 downlink relay time slot, BS sends to MS with signal, or idle;

Or in the descending access slot of the m-m1-m2 between m1 and m2 downlink relay time slot, BS sends to MS with signal, or idle.

Wherein, m is the number of DL, and m1 and m2 are the number of downlink relay time slot, and m-m1-m2 is the number of descending access slot, and m is the positive integer more than or equal to 2, and m1 and m2 are the positive integer more than or equal to 1, and m1+m2＜m.Downlink relay time slot and descending access slot all belong to DL, and BS also can be called as the 0th RS.

Step 611: idle in any SCH before m the DL, or in the time span of this SCH, carry out the terminal synchronizes operation.

It is identical with step 511 to carry out the terminal synchronizes method of operating in this step.

Step 612: in the 0th jumping, BS is synchronized to RS1 in the time span of relaying SCH in m1 downlink relay time slot, signal is sent to RS1.In m2 downlink relay time slot, RS1 receives the signal that RS2 sends, and wherein, m1+m2＜m, m are the number of DL.

In this step, the method for the relaying SCH in the method for relaying SCH and the step 512 is identical.

Step 613: idle in the time span of DUSP.

Step 614: in n-n1-n2 up access slot, RS1 receives the signal that MS sends, or idle.

In this step, in n-n1-n2 up access slot, RS1 receives the signal that MS sends, or idle method comprises following several kinds:

In n-n1-n2 before n1 and n2 the uplink relay time slot up access slot, RS1 receives the signal that MS sends, or idle;

Or in the up access slot of the n-n1-n2 after n1 and n2 uplink relay time slot, RS1 receives the signal that MS sends, or idle;

Or in the up access slot of the n-n1-n2 between n1 and n2 uplink relay time slot, RS1 receives the signal that MS sends, or idle.

Wherein, n is the number of UL, and n1 is the number of uplink relay time slot, and n-n1-n2 is the number of up access slot, and n is the positive integer more than or equal to 2, and n1 and n2 are the positive integer more than or equal to 1, and n1+n2＜n.Uplink relay time slot and up access slot all belong to UL, and RS1 is first RS.

Step 615: in the 1st jumping, in n1 uplink relay time slot, RS1 is synchronized to RS2 in the time span of SCH, and signal is sent to RS2; In n2 uplink relay time slot, signal is sent to BS, wherein, n1+n2＜n, n are the number of UL.

In addition, BS, RS1 and RS2 are at m1 and m2 downlink relay time slot and m-m1-m2 the T that descending access slot is middle _RGP1Time span in idle, at the T of n1 with n2 uplink relay time slot and the individual up access slot of n-n1-n2 centre _RGP2Time span in idle, n1 with n2 uplink relay time slot after the time span of UDSP in the free time.

Step 620: judge that 2k jumps and the 2k+1 jumping is final jump, when being not final jump, execution in step 630; Deny the person, execution in step 640 when the 2k jumping is final jump, execution in step 650 when the 2k+1 jumping is final jump; Wherein, k is the integer more than or equal to 1.

Wherein, 2k representes the even number jumping, and 2k+1 representes next jumping that 2k jumps, i.e. odd number of hops.

Step 630: in 2k jumped, in m-m1-m2 descending access slot, RS (2k) sent to MS with signal, or idle.

Step 631: idle in any terminal SCH before m the DL, or in the time span of this SCH, carry out simultaneous operation.

Step 632: in m1 downlink relay time slot, RS in the time span of relaying SCH (2k) is synchronized to RS (2k+1), and signal is sent to RS (2k+1); In m2 downlink relay time slot, signal is sent to RS (2k-1).

Step 633: idle in the time span of DUSP.

Step 634: in 2k+1 jumped, in n-n1-n2 up access slot, RS (2k) and RS (2k+1) received signal or the free time that MS sends.

Step 635: in n1 uplink relay time slot, RS (2k+1) is synchronized to RS (2k+2) in the time span of relaying SCH, and the signal that will in step 632, receive sends to RS (2k+2); In n2 uplink relay time slot, signal is sent to RS (2k).

In addition, RS (2k), RS (2k+1) and RS (2k+2) are at m1 and m2 downlink relay time slot and m-m1-m2 the T that descending access slot is middle _RGP1Time span in idle, at the T of n1 with n2 uplink relay time slot and the individual up access slot of n-n1-n2 centre _RGP2Time span in idle, n1 with n2 uplink relay time slot after the time span of UDSP in the free time.

Step 640:RS (2k) sends to MS with signal in m1 DL, or idle, in m2 downlink relay time slot, signal is sent to RS (2k-1), in m-m1-m2 descending access slot, signal is sent to MS, or idle.

Step 641: idle in the time span of DUSP.

Step 642: in n1 uplink relay time slot, receive the signal that RS (2k-1) sends.

Step 643: in n-n1 up access slot, RS (2k) free time, or receive the signal that MS sends.

Step 650: in m1 downlink relay time slot, RS (2k+1) receives the signal that RS (2k) sends, and is idle in m2 downlink relay time slot.

Step 651: idle in any terminal SCH before m the DL, or in the time span of this SCH, carry out simultaneous operation.

Step 652: in m-m1-m2 descending access slot, signal is sent to MS, or idle.

Step 653: idle in the time span of DUSP.

Step 654: in n1 uplink relay time slot, RS (2k+1) receives the signal that MS sends, or idle; In n2 uplink relay time slot, signal is sent to RS (2k), in n-n1-n2 up access slot; RS (2k+2) receives the signal that MS sends, or idle.

So far, end is to the introduction of second preferred embodiment shown in Figure 6.

Step 610～step 654 of carrying out present embodiment can be formed in the TD-SCDMA system, or a sub-frame of 3G evolution system of future generation, and two sub-frame are formed a radio frames.In Fig. 6, the time sequencing of relay transmission is come out with the formal description of structure chart, is formed frame structure in relay transmission.

Introduce the embodiment of frame structure of the realization multi-hop relay transmission of the embodiment of the invention below:

Fig. 6 a is first sketch map of frame structure of the realization multi-hop relay transmission of the embodiment of the invention.Shown in Fig. 6 a,

The frame of the first behavior BS, second is respectively the frame of RS1 and RS2 with the third line, is followed successively by below that even number is jumped and the frame of odd number of hops, and last column possibly be that the frame of even number jumping also possibly be the frame of odd number of hops.

The frame of above-mentioned each row all comprises: subframe N and subframe N+1; The structure of subframe N and subframe N+1 is identical, and a kind of mode of this yes embodiment of the invention is for other subframes N frame structure different with subframe N+1; Also within protection scope of the present invention; For example, the number of the relaying time slot in subframe N and subframe N+1 can be different, and perhaps the order of the relaying time slot among subframe N and the subframe N+1 can be inequality etc.

Terminal SCH has been shown among Fig. 6 a has been positioned at the top situation of subframe N, this terminal SCH can be before any DL certainly, and it is preferred implementation that terminal SCH is positioned at the top mode of subframe N.

Can find out that in the present embodiment, the number of DL is 4, the number of UL is 3, and m1 equals 1, and m2 equals 1, and the number of n1 equals 1, and the number of n2 equals 1, but the number of DL is not limited only to four the situation that present embodiment provides.

First with second descending access slot in, BS and RS1, RS2 send to MS with signal, the employed running time-frequency resource of transmission signal can be a quadrature, also can be multiplexing.

The time span of SCH, T at the terminal _RGP1Time span, T _RGP2The time span of time span and UDSP of time span, DUSP in, BS, RS1 and RS2 are idle.If DL and the protection between the DL that the length of this DUSP equals the TD-SCDMA subframe are at interval, the time span and uplink pilot time slot (UpPTS) sum of first switching point deduct T _RGP1The value of gained, DL and the protection between the DL that perhaps equals the 3GPPLTE subframe are at interval, the summation of time span, descending pilot frequency time slot (DwPTS) and the UpPTS of first switching point deducts time span and the T of terminal SCH _RGP1The value of gained.For example, DUSp equals 248.046875 μ s-T _RGP1-2*9.375us=229.296875-T _RGP1, wherein, the time span of UDSP equals 9.375*3us-T _RGP2=28.125us-T _RGP2, and the moment that UDSP finishes overlap with the moment that second switching point finishes, so based on the multi-hop relay transmission system of this frame be can with the system of TD-SCDMA system common station address and coexistence of adjacent frequency.

Relaying SCH is arranged in the 3rd downlink relay time slot, and this relaying SCH takies the part bandwidth, and BS BS in this relaying SCH is synchronized on the RS1, and RS2 is synchronized on the RS3 in this relaying SCH.

In the 3rd relaying descending time slot, BS sends to RS1 with signal, and RS2 sends to RS3 with signal, and this signal is generally data-signal.It can be quadrature that even number such as BS, RS2 is jumped the shared running time-frequency resource of node transmission signal, also can be multiplexing.

In the 4th downlink relay time slot, BS can send signal and give MS, also can be idle.If in operation before, accomplished synchronous operation between RS1 and the RS2, RS2 sends to RS1 with signal so.

In first up access slot, MS sends to BS, RS1 and RS2 with signal.The running time-frequency resource that uses can be a quadrature, also can be multiplexing.

In second uplink relay time slot, because it is synchronous to have carried out SCH before BS and the RS1, this moment, RS1 sent to BS with signal.Carried out simultaneous operation before RS2 and the RS3, RS3 sends to RS2 with signal in this time slot.It can be quadrature that the node of odd number of hops such as RS1 and RS3 sends the shared running time-frequency resource of signal, and it is multiplexing also can discussing.

In the 3rd uplink relay time slot; RS1 sends relaying SCH signal to RS2, is synchronized on the RS2, and in this time slot, sends signal to RS2; BS can be idle in this time slot; Also can receive the signal that MS sends, because the downstream signal of odd number RS is bigger to the upward signal interference of MS, so BS generally is in idle condition in this time slot.

More than be to communicating the introduction of formed frame between BS, RS1 and the RS2, transmitting basic identical for jump transmitting-receiving transmission and the transmitting-receiving between BS, RS1 and the RS2 carried out between relaying and the odd number of hops relaying at even number.In the 3rd downlink relay time slot, RS (2k) sends to RS (2k+1) with signal; In the 4th downlink relay time slot, RS (2k) sends to RS (2k-1) with signal.In second uplink relay time slot, RS (2k+1) sends to RS (2k) with signal, and in the 3rd uplink relay time slot, RS (2k+1) sends to RS (2k+2) with signal.

In embodiments of the present invention, each time slot can adopt time division multiplexing mode, frequency division multiplexing mode or space division multiplexing mode, and it is fixed specifically to adopt which kind of multiplex mode to come according to concrete application scenarios.

Can find out that from Fig. 6 a final jump is divided into two kinds of situation: possibly be that even number is jumped, also possibly be odd number of hops.

First kind, when final jump is an even number when jumping, in first DL, RS (2k) sends to MS with signal, second with the 3rd DL in, RS (2k) sends to MS with signal, perhaps the free time, RS (2k) sends to RS (2k-1) with signal in the 4th DL.Idle in the time span of DUSP, first with second UL in, RS (2k) sends to MS with signal, or idle, in the 3rd UL, RS (2k) receives the signal that RS (2k-1) sends.

Second kind, when final jump is odd number of hops, first with second DL in, RS (2k+1) sends to MS with signal, in the 3rd DL, receives the signal that RS (2k) sends, and in the 4th DL, signal is sent to MS or free time.Idle in the time span of DUSP; In second UL, signal is sent to RS (2k), first with the 3rd UL in, signal is sent to MS.

Can find out that from present embodiment in subframe N, the number of DL is 4, the number of UL is 3, and m1 equals 1, and m2 equals 1, and the number of n1 equals 1, and the number of n2 equals 1.If guarantee in a sub-frame, to carry out under the situation of double bounce transmission, situation about changing for the number of DL, UL, downlink relay time slot and uplink relay time slot is also within protection scope of the present invention.And the structure of subframe N+1 can be identical with the structure of subframe N, also can be different, as long as can guarantee in a sub-frame, to carry out the transmission of double bounce, just can significantly reduce the time delay that arrives final jump.Be how the example analysis can reduce the required time delay of arrival final jump with this frame below.

If BS will send to the MS2 under the RS2 through RS1 and RS2 with signal, the centre will be jumped through three.At first in first subframe, BS sends to RS1 with signal in the 3rd downlink relay time slot, and in second uplink relay time slot in first subframe, RS1 sends to RS2 with signal.In second sub-frame, RS2 sends to MS2 with signal, has passed through the time delay of two sub-frame in the middle of this,, has postponed 10ms that is.Need the delay of 15ms, the technical scheme of the embodiment of the invention can reduce the time delay that arrives final jump than the arrival MS2 shown in Fig. 3,, can more significantly reduce time delay especially for the many situation of jumping figure.Realize the relay transmission that N jumps,, only need the delay of N/2 sub-frame, promptly postpone (N/2) * 5ms,, arrive the delay that final jump only needs (N+1)/2 sub-frame, promptly postpone [(N+1)/2] * 5ms if N is an odd number if N is an even number.

About coexistence; If in this frame among the number of DL and UL and the TD-SCDMA DL of frame and the number of UL equate respectively, and if the length of the DUSP in this frame equal the TD-SCDMA subframe DL and the protection between the DL at interval, the time span and the UpPTS sum of first switching point deduct T _RGP1The value of gained, DL and the protection between the DL that perhaps equals 3GPP LTE subframe are at interval, the summation of time span, DwPTS and the UpPTS of first switching point deducts time span and the T of terminal SCH _RGP1The value of gained, and the moment that UDSP finishes overlaps with the moment that second switching point finishes, so based on the 3G next generation evolution system of the transmission means of this frame can with TD-SCDMA system common station address and coexistence of adjacent frequency.

So far, end is to the description of the embodiment one shown in Fig. 6 a.

If the 3rd downlink relay time slot and the 4th downlink relay time slot among the subframe N shown in Fig. 6 a are exchanged, and the 3rd downlink relay time slot and second uplink relay time slot after will exchanging are used separately as descending access slot and up access slot.The 3rd downlink relay time slot and second uplink relay time slot among the subframe N+1 are used separately as descending and up access slot, get final product second kind of structure of the frame of accomplished multi-hop relay transmission.It is to be noted and transmit the time delay that can not reduce the arrival final jump based on the multi-hop relay of this frame structure, the embodiment of the invention is only made brief account.

Fig. 6 b is second sketch map of frame structure of the realization multi-hop relay transmission of the embodiment of the invention.Shown in Fig. 6 b,

In subframe N, in the 4th downlink relay time slot, RS (2k) sends to RS (2k+1) with signal, and we regard BS as RS (0) here.In the 3rd uplink relay time slot, RS (2k+1) sends to RS (2k) with signal.

In subframe N+1, in the 4th downlink relay time slot, RS (2k) sends to RS (2k-1) with signal; In the 3rd uplink relay time slot, RS (2k+1) sends to RS (2k+2) with signal.

This shows; If BS jumps through three signal is sent to the MS2 under the RS2; BS will send to RS1 with signal in first subframe, RS1 sends to RS2 with signal in second sub-frame, and RS2 sends to MS3 with signal in the 3rd sub-frame; To promptly postpone 15ms through the delay of three sub-frame in the middle of this.The N sub-frame of time delay will pass through to(for) the relay transmission of N jumping could arrive destination device, promptly postpones N*5ms.If this frame structure can be identical with the frame structure of TD-SCDMA, and if the length of the DUSP in this frame equal the TD-SCDMA subframe DL and the protection between the DL at interval, the time span and the UpPTS sum of first switching point deduct T _RGP1The value of gained, DL and the protection between the DL that perhaps equals 3GPP LTE subframe are at interval, the summation of time span, DwPTS and the UpPTS of first switching point deducts time span and the T of terminal SCH _RGP1The value of gained, so based on the 3G of the transmission means of this frame evolution system of future generation can with TD-SCDMA system common station address and coexistence of adjacent frequency.

So far, end is to the description of the embodiment two shown in Fig. 6 b.

Fig. 6 c is the 3rd sketch map of frame structure of the realization multi-hop relay transmission of the embodiment of the invention.Shown in Fig. 6 c,

The structure of the frame shown in this embodiment is identical with the structure of the frame of Fig. 6 a, comprising: four DL and three UL.Wherein, comprise among the DL: two descending access slots and two downlink relay time slots, UL comprises: a up access slot and two uplink relay time slots.

In the present embodiment, the length of DUSP equal 3GPP LTE subframe DL and the protection between the DL at interval, the summation of time span, DwPTS and the UpPTS of first switching point deducts time span and the T of terminal SCH _RGP1The value of gained promptly equals 229.296875-T _RGP1The length of UDSP equals 9.375*3us-T _RGP2=28.125us-T _RGP2

So far, end is to the description of the embodiment shown in Fig. 6 c.

More than be introduction, in ensuing embodiment, introduce and realize the multi-hop relay system for transmitting the method for the realization multi-hop relay of embodiment of the invention transmission.

Fig. 7 is the structural representation of the 3rd preferred embodiment of system of the realization relay transmission of the embodiment of the invention.As shown in Figure 7, this system comprises: at least three RS, one or more MS;

Wherein a RS, the 2nd RS and the 3rd RS are that three adjacent RS, a said RS and the 2nd RS all are not last RS.

For the ease of describing; Represent respectively with RS (2k), RS (2k+1), RS (2k+2), MS (2k) and MS (2k+1): the MS under MS under a RS, the 2nd RS, the 3rd RS, a RS cover and the 2nd RS cover, a said RS and the 2nd RS all are not last RS.

Wherein, RS (2k), RS (2k+1), RS (2k+2), MS (2k) and MS (2k+1) represent respectively: 2k RS, a 2k+1 RS, a 2k+2 RS, a 2k MS and 2k+1 MS.

Said RS (2k) is used to judge whether oneself is final jump, when judgement is not final jump, in m-m1 DL, signal is sent to MS (2k), in m1 DL, carries out simultaneous operation with RS (2k+1), and signal is sent to RS (2k+1).At T _RGP1In be in idle condition, carry out simultaneous operation in the time span of any terminal SCH before m the DL, or be in idle condition, in the time span of DUSP, be in idle condition, at T _RGP2In be in idle condition, in the time span of UDSP, be in idle condition.

Said RS (2k+1) is used for receiving the signal that RS (2k) sends at m1 DL.At T _RGP1In be in idle condition, carry out simultaneous operation in the time span of any terminal SCH before m the DL, or be in idle condition.In the time span of DUSP, be in idle condition, at T _RGP2In be in idle condition, in the time span of UDSP, be in idle condition.Judge whether oneself is final jump, when judgement is not final jump, in n1 ascending time slot UL, signal is sent to RS (2k+2), in n-n1 UL, receive the signal that MS (2k+1) sends.

RS (2k+2) is used for receiving the signal that said RS (2k+1) sends at n1 UL.

MS (2k) is used for receiving the signal that RS (2k) sends at m-m1 DL;

MS (2k+1) is used at n-n1 UL signal being sent to RS (2k+1);

Wherein, said m is the number of DL, and n is the number of UL; M1 is the number of downlink relay time slot, and m-m1 is the number of descending access slot, and n1 is the number of uplink relay time slot; N-n1 is the number of up access slot, and m1, n1 are the positive integer more than or equal to 1, and m and n are the positive integer more than or equal to 2; And m＞m1, n＞n1.K is the positive integer more than or equal to 0, RS (2k) expression even number RS, the next RS of RS (2k+1) expression RS (2k), the next RS of RS (2k+2) expression RS (2k+1).MS under MS (2k) the expression RS (2k), the MS under MS (2k+1) the expression RS (2k+1).

M DL, a n UL, the time span of terminal SCH, T _RGP1, T _RGP2, DUSP and UDSP sum equal the time span of the sub-frame of TD-SCDMA.

When k=0, RS (2k) is BS, and RS (2k+1) is RS1, and RS (2k+2) is RS2.

BS judges at first whether oneself is final jump, when judgement is not final jump, in m1 DL, carries out simultaneous operation with RS1, and signal is sent to RS1.At T _RGP1In be in idle condition, in the time span of terminal SCH, carry out simultaneous operation, or be in idle condition, in the time span of DUSP, be in idle condition, at T _RGP2In be in idle condition, in the time span of UDSP, be in idle condition.

RS1 receives the signal that BS sends in m1 DL.At T _RGP1In be in idle condition, in the time span of terminal SCH, carry out simultaneous operation, or be in idle condition, in the time span of DUSP, be in idle condition, at T _RGP2In be in idle condition, in the time span of UDSP, be in idle condition.Judge whether oneself is final jump, when judgement is not final jump, in n1 ascending time slot UL, signal is sent to BS.

RS2 receives the signal that said RS 1 sends in n1 UL.

So far, end is to the introduction of the 3rd preferred embodiment of the system of realization relay transmission shown in Figure 7.

Fig. 8 is the structural representation of the 4th preferred embodiment of system of the realization relay transmission of the embodiment of the invention.As the RS among Fig. 7 (2k) when being not BS, this system also further comprises RS (2k-1), and this RS (2k-1) is the previous RS of RS (2k).

Compare with Fig. 7, in the present embodiment:

RS (2k) also is further used in m2 DL, signal being sent to RS (2k-1), in m-m1-m2 DL, signal is sent to MS (2k), or be in idle condition.RS (2k) also is further used in n1 UL, receives the signal that RS (2k-1) sends, and in n-n1 UL, receives the signal that MS (2k) sends, or in n2 UL, receives the signal that RS (2k+1) sends, and in n-n1-n2 UL, receives the signal that MS (2k) sends.Wherein n2 is the positive integer more than or equal to 1, and n1+n2＜n, and m2 is the positive integer more than or equal to 1, and m1+m2＜m.

Said RS (2k+1) also is further used in m-m1 DL, signal being sent to MS (2k+1); Or in m2 DL, receive the signal that RS (2k+2) sends, in m-m1-m2 DL, signal is sent to MS (2k+1), or be in idle condition; In n2 UL, signal is sent to RS (2k), in n-n1-n2 UL, receive the signal that MS (2k+1) sends.

Said RS (2k+2) is further used in m2 DL, signal being sent to RS (2k+1).

Said RS (2k-1) is used at n1 UL signal being sent to RS (2k), in m2 DL, receives the signal that RS (2k) sends.

MS (2k) is used at m-m1-m2 DL, receives RS (2k), and in n-n1-n2 UL, or in n-n1 UL, signal is sent to RS (2k).

MS (2k+1) is used at m-m1-m2 DL, or in m-m1 DL, receives the signal that RS (2k+1) sends, and in n-n1-n2 UL, signal is sent to RS (2k+1).

If RS (2k) is BS, so just there is not RS (2k-1).MS (2k), MS (2k+1), RS (2k+1) and RS (2k+2) are respectively MS0, MS1, RS1 and RS2.Wherein MS0 is meant the MS that is positioned under the BS, and RS1 is the first jumping RS that links to each other with BS, and MS1 is the MS that is positioned under the RS1, and RS2 is the second jumping RS, and MS2 is the MS that is positioned under the RS2.

Said RS1 also is further used in m-m1 DL, signal being sent to MS1, or in m2 DL, receives the signal that RS2 sends, and in m-m1-m2 DL, signal is sent to MS1, or is in idle condition.In n-n1 UL, receive the signal that MS1 sends, or in n2 UL, signal is sent to BS, in n-n1-n2 UL, receive the signal that MS1 sends.

Said RS2 is further used in m2 DL, signal being sent to RS1.

In the present embodiment, BS is further used in m-m1 DL, signal being sent to MS0, or is in idle condition and in n1 UL, is in idle condition, in n-n1 UL, receives the signal that MS0 sends, or is in idle condition.

MS0 is used at m-m1-m2 DL, or is receiving the signal that BS sends among m-m1 DL, and in n-n1 UL, or in n-n1-n2 UL, signal is sent to BS.

MS1 is used at m-m1-m2 DL, or is receiving the signal that RS1 sends among m-m1 DL, and in n-n1 UL, or in n-n1-n2 UL, signal is sent to RS1.So far, end is to the introduction of the 4th preferred embodiment of the system of realization relay transmission shown in Figure 8.

It is pointed out that if DL and the protection between the DL that the time span of idle DUSP equals the TD-SCDMA subframe in Fig. 7 and embodiment shown in Figure 8 at interval, the time span and the UpPTS sum of first switching point deduct T _RGP1The value of gained, DL and the protection between the DL that perhaps equals 3GPP LTE subframe are at interval, the summation of time span, DwPTS and the UpPTS of first switching point deducts time span and the T of terminal SCH _RGP1The value of gained, and the moment that second switching point finishes in the subframe of moment of finishing of UDSP and TD-SCDMA overlap, so the system of this realization relay transmission be can with the system of TD-SCDMA common station address and coexistence of adjacent frequency.

In sum, more than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a method that realizes relay transmission is characterized in that, this method may further comprise the steps:

When jumping with 2k+1, definite 2k jumps when all being not final jump transmission signals in m-m1 descending time slot DL, or free time; In descending protection interval T _RGP1Middle idle; In m1 DL, 2k relay station RS and 2k+1 RS carry out simultaneous operation, and signal is sent to said 2k+1 RS; Idle in any terminal synchronizes channel SCH before the said m DL, or in the time span of said terminal SCH, carry out simultaneous operation;

Wherein, said m is the number of DL, and n is the number of UL; M1 is the number of downlink relay time slot, and m-m1 is the number of descending access slot, and n1 is the number of uplink relay time slot; N-n1 is the number of up access slot, and m1, n1 are the positive integer more than or equal to 1, and m and n are the positive integer more than or equal to 2; And m＞m1, n＞n1; K is the positive integer more than or equal to 0, and said 2k jumps the expression even number and jumps, and 2k+1 jumps next jumping that the said even number of expression is jumped; When k=0, said RS is a base station BS, and 2k RS representes even number RS, and said 2k+1 RS representes the next RS of said 2k RS, and said 2k+2 RS representes the next RS of said 2k+1 RS;

2. method according to claim 1 is characterized in that, this method further comprises: when confirming that said 2k jumps to final jump, in a said m1 DL, 2k RS sends to terminal MS with signal, or idle.

3. method according to claim 1 is characterized in that, this method further comprises: when confirming that said 2k+1 jumps to final jump, in a said n1 UL, 2k+1 RS sends to MS with signal, or idle.

4. method according to claim 1 is characterized in that, and is said in m1 DL, and the method for carrying out simultaneous operation between 2k RS and 2k+1 the RS comprises:

Among the relaying SCH among first DL in a said m1 DL, 2k RS employing is major-minor synchronously, or the mode of once time synchronization is synchronized on 2k+1 the RS.

5. method according to claim 1 is characterized in that, and is said in m-m1 DL, transmission signals, or idle method comprises:

In m-m1 DL, signal is sent to MS, or idle;

Or in m2 DL, 2k RS sends to 2k-1 RS with signal; In m-m1-m2 DL, signal is sent to MS, or idle, wherein m2 is the number of downlink relay time slot, m2 is the positive integer more than or equal to 1, and m1+m2＜m.

6. method according to claim 5 is characterized in that, saidly in m-m1 DL, signal is sent to MS, or idle method comprises:

In m-m1 DL before m1 the DL, signal is sent to MS, or idle;

Or, among the DL of the m-m1 after m1 DL, signal is sent to MS, or idle;

Or, among the DL of the m-m1 between m1 DL, signal is sent to MS, or idle.

7. method according to claim 5 is characterized in that, saidly in m-m1-m2 DL, signal is sent to MS, or idle method comprises:

In m-m1-m2 DL before m1+m2 the DL, signal is sent to MS, or idle;

Or, among the DL of the m-m1-m2 after m1+m2 DL, signal is sent to MS, or idle;

Or, among the DL of the m-m1-m2 between m1+m2 DL, signal is sent to MS, or idle.

8. method according to claim 1 is characterized in that, the said method of in the time span of said terminal SCH, carrying out simultaneous operation comprises:

In the time span of the terminal of subframe N SCH, terminal SCH is synchronized in the cell set;

In the time span of the terminal of subframe N+1 SCH, terminal SCH is synchronized to a sub-district in the said cell set, wherein, and N >=1, and be odd number.

9. according to claim 1 or 5 described methods, it is characterized in that, said in n-n1 UL transmission signals, or idle method comprises:

In n-n1 UL, receive the signal that MS sends, or idle;

Or in n2 UL, 2k+1 RS sends to 2k RS with signal, in n-n1-n2 UL, receives the signal that MS sends, or idle, and wherein n2 is the number of uplink relay time slot, and n2 is the positive integer more than or equal to 1, and n1+n2＜n.

10. method according to claim 9 is characterized in that, and is said in n-n1 UL, receives the signal that MS sends, or idle method comprises:

In n-n1 UL before n1 the UL, receive the signal that MS sends, or idle;

Or, among the UL of the n-n1 after n1 UL, receive the signal that MS sends, or idle;

Or, among the UL of the n-n1 between n1 UL, receive the signal that MS sends, or idle.

11. method according to claim 9 is characterized in that, and is said in n-n1-n2 UL, receives the signal that MS sends, or idle method comprises:

In n-n1-n2 UL before n1+n2 the UL, receive the signal that MS sends, or idle;

Or, among the UL of the n-n1-n2 after n1+n2 UL, receive the signal that MS sends, or idle;

Or, among the UL of the n-n1-n2 between n1+n2 UL, receive the signal that MS sends, or idle.

12. method according to claim 1 is characterized in that, the time span of said DUSP equals:

The time span and the uplink pilot time slot UpPTS sum of the DL of TD-SCDMA subframe and the interval of the protection between the DL, first switching point deduct T _RGP1The value of gained;

Or the summation of time span, descending pilot frequency time slot DwPTS and the UpPTS of the DL of third generation affiliate 3GPP Long Term Evolution LTE subframe and the interval of the protection between the DL, first switching point deducts time span and the T of terminal SCH _RGP1The value of gained;

And the moment that said UDSP finishes overlapped with the moment that second switching point finishes.

13. a communication system is characterized in that, this system comprises: at least three RS, one or more MS;

A said RS is used to judge whether oneself is final jump, when judgement is not final jump, in m-m1 descending time slot DL, signal is sent to the MS under the RS covering, or be in idle condition; In m1 DL, carry out simultaneous operation with the 2nd RS, and signal is sent to said the 2nd RS; In descending protection interval T _RGP1In be in idle condition; Carry out simultaneous operation in the time span of any terminal synchronizes channel SCH before m DL, or be in idle condition; In the time span of DUSP, be in idle condition; In up protection interval T _RGP2In be in idle condition; In the time span of up commentaries on classics down conversion point UDSP, be in idle condition;

Said the 2nd RS is used for receiving the signal that a RS sends at m1 DL; At T _RGP1In be in idle condition; Carry out simultaneous operation in the time span of any terminal SCH before m DL, or be in idle condition; In the time span of the up transfer point DUSP of descending commentaries on classics, be in idle condition; At T _RGP2In be in idle condition; In the time span of UDSP, be in idle condition; Judge whether oneself is final jump, when judgement is not final jump, in n1 ascending time slot UL, signal is sent to the 3rd RS; In n-n1 UL, receive the signal that the MS under the 2nd RS covering sends;

MS under the 2nd RS covers is used at n-n1 UL signal being sent to the 2nd RS;

14. system according to claim 13 is characterized in that, if a said RS is not BS, this system also further comprises the previous RS of a said RS,

A said RS is further used in m2 DL, signal being sent to its previous RS, in m-m1-m2 DL, signal is sent to the MS under the RS covering, or be in idle condition; Also be further used in n1 UL, receive the signal that its previous RS sends, in n-n1 UL, receive the signal that the MS under the RS covering sends; Or in n2 UL, receive the signal that the 2nd RS sends, and in n-n1-n2 UL, receive the signal that the MS under the RS covering sends, wherein n2 is the positive integer more than or equal to 1; And n1+n2＜n; M2 is the number of downlink relay time slot, and m2 is the positive integer more than or equal to 1, and m1+m2＜m;

Said the 2nd RS is further used in m-m1 DL, and signal is sent to the MS under the 2nd RS covering, or in m2 DL, receives the signal that the 3rd RS sends, and in m-m1-m2 DL, signal is sent to the MS under the 2nd RS covering, or be in idle condition; In n2 UL, signal is sent to a RS, in n-n1-n2 UL, receive the signal that the MS under the 2nd RS covering sends;

Said the 3rd RS is further used in m2 DL, signal being sent to the 2nd RS;

The previous RS of a said RS is used at n1 UL signal being sent to a RS; In m2 DL, receive the signal that a RS sends;

MS under the one RS covers is further used in m-m1-m2 DL, receives the signal that a RS sends; And in n-n1-n2 UL, or in n-n1 UL, signal is sent to a RS;

MS under the 2nd RS covers is used at m-m1-m2 DL, or in m-m1 DL, receives the signal that the 2nd RS sends; And in n-n1-n2 UL, signal is sent to the 2nd RS.