CN102577276B

CN102577276B - Relay transmission method and apparatus thereof

Info

Publication number: CN102577276B
Application number: CN201080045968.6A
Authority: CN
Inventors: 冷晓冰; 王栋耀; 沈钢; 刘继民
Original assignee: Alcatel Lucent Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2010-01-13
Filing date: 2010-01-13
Publication date: 2014-12-31
Anticipated expiration: 2030-01-13
Also published as: WO2011085515A1; CN102577276A

Abstract

A relay transmission method and apparatus thereof are disclosed. The method comprises the following steps: dividing services into time sensitive services and time insensitive services; and allocating different time-frequency resources to different services, in order to perform, according to the allocated time-frequency resources, a Buffering-Forwarding (BF) relay on the time sensitive services and perform a Decoding-Forwarding (DF) relay on the time insensitive services. Through the above technical solution, a delay request on the time sensitive services can be satisfied, and the problem that a conventional Amplifying-Forwarding (AF) relay is unstable can be overcome.

Description

Relay transmission method and equipment thereof

Technical field

Embodiments of the invention relate to wireless communication field, particularly a kind of relay transmission method and equipment thereof.

Background technology

As everyone knows, relaying technique will be introduced in the next generation mobile communication network of senior IMT (IMT-Advanced), to expand covering to eliminate coverage hole.Further, due to the investment cost of relaying technique and working cost low, can by arranging that multiple relay strengthens the throughput of cell edge.

Traditional trunking is also referred to as analogue repeater or radio-frequency (RF) repeater, and it is widely applicable in 2G and 3G system, works in amplification-forwarding (AF) pattern.The problem of AF trunking is also exaggerated interference while of being and amplifying useful signal.Further, AF trunking does not have signal controlling and Intelligent treatment function, therefore due to its fixing gain, has unstable danger, thus limits its application.In order to avoid concussion, between base station (BS) area of coverage and the relaying area of coverage, need better isolation.

In recent years, for 4G system, the interest of decoding-forwarding (DF) relaying technique is increased fast.DF relaying is easy to realize the control of intelligence and scheduling of resource to overcome the problem in AF relaying, as amplified interference and unstable.Although DF relaying has the advantage being better than AF relaying, but it also has obvious inferior position, that is, compared with AF relaying, traffic delay is very large.Because the delay of decoding/encoding and modulating/demodulating process, data business volume has to wait for long time at relay station.Especially in hop relay network (3 jump and more than), traffic delay increases along with the number of jumping and increases.

Except relaying, another fact is, mobile operator communicates more and more interested to multicarrier with multi-channel wireless with manufacturer.Next generation mobile networks will need very wide bandwidth to support high transmission rate, but " good " frequency (lower than 1GHz) is very short and be difficult to obtain enough Continuous Bands.Operator has to ask the frequency spectrum resource at higher frequency (e.g., 2.1,2.3,2.5 and 3.5GHz) place.Therefore, multicarrier communicates with multiband and will be introduced in next generation mobile networks.Current IMT-Advanced normal structure (e.g., LTE-Advanced with 802.16m) has determined that introducing multicarrier communicates with multiband.

Figure 12 and Figure 13 shows and proposes two kinds of DF solutions for standard 802.16m.Each subframe is divided into two parts by the technical scheme 1 in Figure 12, and a part for subframe receives the signal from upper level in a frame, and in another frame, this signal is sent to next stage by a part for subframe.And in the technical scheme 2 of Figure 13, equally each subframe is divided into two parts, be with the difference of Figure 12, the half resource of each subframe is used for communicating with mobile terminal (MS) by trunking, and another resource be used for or carry out two-way reception, or carry out two-way transmission.

After RS receives traffic carrying capacity, must wait for that next frame could be sent, the technical scheme shown in Figure 12 and Figure 13 has the defect part of its inherence, and namely very large traffic carrying capacity postpones.In 802.16m, the length of physical frame is 5ms, and therefore the delay of DF relaying is Millisecond, and can increase along with the increase of relaying jumping figure, and for such as speech business etc. concerning the business of time-sensitive, this is very disadvantageous.

Summary of the invention

Embodiments of the present invention propose a kind of relay transmission method and equipment thereof.

According to an aspect of the present invention, propose a kind of relay transmission method, comprise and business divided the business of paired time-sensitive and to time insensitive business; For the running time-frequency resource that different traffic assignments is different, to make according to distributed running time-frequency resource, can buffer memory-forwarding BF relaying be carried out to the described business to time-sensitive and to described, time insensitive business be decoded-forward DF relaying.

According to a further aspect in the invention, propose a kind of relay transmission method, comprise DF relaying of decoding to time insensitive business-forward; Buffer memory-forwarding BF relaying is carried out to the business of time-sensitive, wherein, described to being be that the resource that these two kinds of business are distributed respectively is carried out according to base station to time insensitive business with to the relaying of the business of time-sensitive.

According to another aspect of the invention, propose a kind of base station, comprise traffic differentiation unit, for business being divided the business of paired time-sensitive and to time insensitive business; Resource allocation unit, for for the different running time-frequency resource of different traffic assignments, to make according to distributed running time-frequency resource, can buffer memory-forwarding BF relaying be carried out to the described business to time-sensitive and to described, time insensitive business be decoded-forward DF relaying.

In accordance with a further aspect of the present invention, propose a kind of trunking, comprising: DF TU Trunk Unit, for carrying out DF relaying to time insensitive business; BF TU Trunk Unit, for carrying out BF relaying to the business of time-sensitive, wherein, described to being be that the resource that these two kinds of business are distributed respectively is carried out according to base station to time insensitive business with to the relaying of the business of time-sensitive.

In accordance with a further aspect of the present invention, propose a kind of relay system, comprise above-described base station, one or more above-described trunking and one or more mobile terminal.

In accordance with a further aspect of the present invention, propose a kind of relay system, comprise above-described base station, one or more trunking and one or more mobile terminal, wherein, BF TU Trunk Unit in described trunking is configured to amplify-forward (AF) pattern, and on BF carrier wave, directly send control signal by described base station, to form DF and the AF forward relay system of mixing.

In above technical scheme, by business being divided the business of paired time-sensitive and to time insensitive business, and adopt DF relaying and BF relaying respectively for different business, the delay requirement to time-sensitive business can either be met, also overcome the problem of traditional AF relaying instability.

Accompanying drawing explanation

According to following description by reference to the accompanying drawings, advantage of the present invention will become easy to understand, wherein:

Fig. 1 shows the schematic diagram of the relay system according to embodiment of the present invention;

Fig. 2 shows the structured flowchart of the base station equipment according to embodiment of the present invention;

Fig. 3 shows the structured flowchart of the trunking according to embodiment of the present invention;

Fig. 4 shows the general introduction schematic diagram of the relay transmission method according to embodiment of the present invention;

Fig. 5 shows the flow chart of the relay transmission method according to embodiment of the present invention;

Fig. 6 shows the flow chart set up according to system initialization and the BF carrier wave of embodiment of the present invention;

Fig. 7 shows the example of a kind of frame structure according to embodiment of the present invention;

Fig. 8 shows the example of the another kind of frame structure according to embodiment of the present invention;

Fig. 9 shows and distributes pattern according to the BF block of embodiment of the present invention;

Figure 10 shows according to the overlapping frame structure example of the BF of embodiment of the present invention;

Figure 11 shows another the frame structure example according to embodiment of the present invention;

Figure 12 shows the frame structure example of a kind of relay transmission method in prior art;

Figure 13 shows the frame structure example of another kind of relay transmission method in prior art.

Embodiment

With reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail, eliminating in the course of the description is unnecessary details and function for the present invention, causes obscure to prevent the understanding of the present invention.

In embodiments of the present invention, propose a kind of relay system, as shown in Figure 1, this system comprises the base station (BS) of the following stated, one or more trunking (RS) and one or more mobile terminal (MS).Although for simplicity, two RS are merely illustrated in Fig. 1, and show two MS only to communicate with trunking 2, but the example of Fig. 1 also can comprise more trunking, and base station and/or any one trunking also can communicate with any one UE.

Also proposed a kind of base station, as shown in Figure 2, this base station comprises delineation of activities unit 210, for by the business of paired for delineation of activities time-sensitive with to time insensitive business, such as, some the periodically urgent signallings between speech business and BS and MS can be comprised to the business of time-sensitive, as 802.16m the unsolicited frequency range distribution service (UGS) that defines; Resource allocation unit 220, for for the different running time-frequency resource of different traffic assignments, to make according to distributed running time-frequency resource, can to the business of time-sensitive being carried out to buffer memory-forwarding (BF) relaying and carrying out DF relaying to time insensitive business.

This base station also comprises transmission unit 230, sends different business respectively, and the message comprising the information relevant with Resourse Distribute is sent to trunking and MS for basis to the distribution of resource.This transmission unit 230 includes conventional base band signal process parts and radio frequency (RF) Signal Processing Element.

Also proposed a kind of trunking.As shown in Figure 3, this trunking comprises DF TU Trunk Unit 310, for carrying out DF relaying to time insensitive business; BF TU Trunk Unit 340, for carrying out BF relaying to the business of time-sensitive, wherein, to being be that the resource that these two kinds of business are distributed respectively is carried out according to base station to time insensitive business with to the relaying of the business of time-sensitive.

Wherein, DF TU Trunk Unit 310 comprises medium education (MAC) module 316, for obtaining the BF relay and control signaling of control BF relaying from the signal after Base-Band Processing; Forwarding module 317, for controlling the forwarding to time insensitive business.

DF TU Trunk Unit 310 also comprises RF front end 312 that classical relay equipment has, low-converter 313 and ADC 314, for converting the analog signal received to digital signal; Base band processor module 315, for carrying out the convention baseband process in DF trunking, as demodulation code, with the control signal making MAC modular unit 316 therefrom can extract control BF relaying; MAC module 318 for carrying out scheduling of resource and service adaptation process, as produce resource scheduling information; Base band processor module 319, for carrying out the convention baseband process in DF trunking, as coding and modulation; DAC 320, upconverter 321 and RF front end 322, can in the analog signal of space propagation for digital signal being converted to.

If under this DF TU Trunk Unit 310 works in time division duplex (TDD) pattern, then can also comprise duplexer 311, for the signal received from the transmission of sky alignment radio-frequency front-end 312 and from radio-frequency front-end 322 to the signal that antenna transmission will send between carry out duplex switch.

BF TU Trunk Unit 330 comprises buffer 335, for the data of the business to time-sensitive that buffer memory in a BF block receives, BF controller 336, for according to BF relay and control signaling, in another BF block by institute's buffer memory, to the data retransmission of the business of time-sensitive to the next node on repeated link, as down hop trunking.By configuration, BF TU Trunk Unit can be operated in AF pattern, and signal is transmitted directly to send RF front end and exports through amplifying from the RF front end received.

BF TU Trunk Unit also can comprise RF front end 332, low-converter 333, ADC 334, DAC 337, upconverter 338 and RF front end 339, and its effect and the RF front end 312 in DF TU Trunk Unit, low-converter 313, ADC 314, DAC 320, upconverter 321 are identical with RF front end 322.

If under this BF TU Trunk Unit 330 works in time division duplex (TDD) pattern, then can also comprise duplexer 331, for the signal received from the transmission of sky alignment radio-frequency front-end 332 and from radio-frequency front-end 339 to the signal that antenna transmission will send between carry out duplex switch.

Although above with the base station of the formal description embodiment of the present invention of the functional module be separated and trunking, but each assembly shown in Fig. 2 and Fig. 3 can realize with multiple device in actual applications, the multiple assemblies illustrated also can be integrated in chip piece or an equipment in actual applications.Such as, the function of RF front end 312 in DF TU Trunk Unit 310, low-converter 313, ADC 314, DAC 320, upconverter 321 and RF front end 322 can use RF front end 332 in BF TU Trunk Unit 330, low-converter 333, ADC 334, DAC 337, upconverter 338 and RF front end 339 to realize respectively.This base station and trunking also can comprise any unit for other object and device.

Below respectively with reference to the relay transmission method shown in figure 4 to Figure 11, above-described base station and trunking are described in detail.

Fig. 4 is the general introduction of the relay transmission method to embodiment of the present invention.As can be seen from Figure 4, delineation of activities is become two classes by embodiments of the present invention: to the business of time-sensitive with to time insensitive business.No matter at BS, RS, or in MS, all these two kinds different business are transmitted respectively.In addition, in embodiments of the present invention, BF to be controlled and dispatch is placed in DF carrier wave and sends.Each entity in system can obtain from DF carrier wave BF control and dispatch for BF relay transmission.

Fig. 5 shows the detail flowchart of relay transmission method described in Fig. 4.

In step 510, the business of the paired time-sensitive of delineation of activities that first the delineation of activities unit 210 of BS will send and to time insensitive business, the former is as the business of speech business or such as UGS and so on, and the latter is as control signal or data service.

In step 520, be respectively the business of time-sensitive and the running time-frequency resource needed for sending time insensitive traffic assignments.

After step 520, alternatively, the initialization of relay system is carried out in step 530.This step can before step 510 or step 520.Fig. 6 shows the detailed process of relay system initialization and the foundation of BF carrier wave.

As shown in Figure 6, in step 610, MS and each RS enters network via DF carrier wave successively.

Then, in step 620, between BS and RS, set up between RS and MS control signal transmission connect.The number that the resource allocation unit 220 of BS can be jumped based on relaying and qos requirement limit BF block, BF district and are that repeated link (link between BS and RS, RS and MS) and access link (link between BS and MS) distribute DF block.

After this, in act 630, BS sends BF carrier wave configuration signal via DF carrier wave to each trunking, and with the BF relaying of initialization RS, this BF carrier wave configuration signal contains the BF Kuai He BF district that distributes in step 520 for information about.

Next, answer the request of setting up the connection of BF carrier wave that MS in step 640 initiates, the resource allocation unit 220 in BS based on the carrier resource of the requirement distribution BF block of QoS, and produces or upgrades the distribution pattern of DF block.In distribution pattern, the connection of setting up can have some frames, or has multipair transmission and reception opportunity in a frame.Anyway, BS should distribute pattern to the BF block of correspondence and define.

Via DF carrier wave, BF block distribution diagram case is sent to each RS in step 650.Meanwhile, BS will inform that the start-up time of the new pattern of each RS is synchronous to ensure, that is, DL-MAP and UL-MAP that the traffic carrying capacity in RS and BF carrier wave is synchronous produced.

In step 660, each RS is switched to new pattern in given start-up time, and produces the access control signaling of MS and this signaling be inserted in DL-MAP and UL-MAP of DF carrier wave.

In step 670, RS sends DL-MAP and UL-MAP of DF carrier wave to its MS.

In step 680, set up the BF carrier wave connection of MS to RS, RS to BS, make the access control signaling according to MS, MS can receive and dispatch via BF carrier wave.

Be more than the detailed process that system initialization and BF carrier wave are set up, next get back to the flow chart shown in Fig. 5.In step 540, according to distributed resource respectively to the business to time-sensitive with carry out relaying to time insensitive business.

Such a example has been shown in Fig. 7.Only has double bounce (that is, only carrying out a relaying) in the figure 7.As can be seen from Figure 7, for DF carrier wave, no matter be BS frame or RS frame, be all frame structure conventionally (as, the nontransparent frame structure of 802.16j, 802.16m frame structure option one or 2) send time insensitive business, its difference part is only that the beginning (DL-MAP and UL-MAP of DF carrier wave) of the downlink subframe of Fig. 7 inserts BF relay and control signaling.

And for BF carrier wave, use one or more BF block (BF block) to carry out the transmission of the business to time-sensitive.Each BF block comprises one or more continuous print OFDM symbol.One or more BF block composition BF district (BF zone).In the example in figure 7, first BF block is distributed to RS and receive (BS → RS), the 2nd BF is distributed to RS and send (RS → MS).Visible, different from AF trunking, BF trunking can not carry out sending and receiving simultaneously, thus can not repeat to amplify to interference signal.This method overcomes the concussion of BF trunking, and does not require there is isolation between the antenna to alms giver BS and the antenna to coverage.Therefore, the technology shown in Fig. 7 is used only can to use an antenna.Meanwhile, because BF block is very little scheduling unit, the delay of BF relaying is very little.Such as, in 802.16m, the length of an OFDM symbol is 102.857 microseconds.BF in each jumping postpones approximately to be only 100 microseconds.Clearly, DF retardation ratio BF postpones large more than 10 times.When multi-hop (being more than or equal to 3 jumpings), BF relaying realizes the transmission between BS and MS easily within the time of a frame.

In the solution shown in Fig. 7, the delay of DF relaying is greater than the delay of BF relaying.BF control signal via DF carrier transmission may be later than BF traffic transmission and arrive.Synchronous fast in order to realize, as mentioned above, BS distributes running time-frequency resource to the connection of the business of time-sensitive, and informs in advance RS.

In the example in figure 7, at first BF block, the BF data from BS received by antenna are via duplexer 341, by the process of RF front end 342, low-converter 343 and ADC344 obtain data from the sample survey (as, digital baseband i/q signal), and this data from the sample survey is stored in buffer 345.In next BF block, this data from the sample survey is taken out, by the process of ADC347, low-converter 348 and RF front end 349, form the radiofrequency signal being suitable for transmitting, be sent to antenna via duplexer 341 and launch.

When Fig. 8 shows four jumpings (that is, carrying out No. three relayings), example according to the embodiment of the present invention.In fig. 8, DF carrier wave carries out to time insensitive data according to DF Relay Option in 802.16m 2 transmission.And each downlink subframe start carry BF relay and control signaling.For BF carrier wave, in order to BF data being relayed to MS from BS within the time of a frame, first BF block is distributed to BS → the first and jump (1hop) RS link, second BF block is distributed to the first jumping RS → the second and jump (2hop) RS link, 3rd BS block is distributed to the second jumping RS → three and jump (3hop) RS link, the 4th BS block is distributed to the 3rd and jump RS → MS.In order to BF data being relayed to MS from BS within the time of a frame, first BF block is distributed to MS → three and jump RS link, second BF block is distributed to the 3rd and jump RS → the second jumping RS link, 3rd BS block is distributed to the second jumping RS → the first and jump RS link, the 4th BS block is distributed to first jumping RS → BS.

Continuous BF block for whole relay route constitutes BF district.In fig. 8, this BF district comprises four BS blocks.In the system initialisation phase as above described in step 530, the resource allocation unit 220 in BS is according to RS numbering, maximum relaying jumping figure and postpone to require configuration BF block size and be relay distribution BF block each time.Such as, in the example depicted in fig. 8, owing to there being No. three relayings, and require to complete the relaying of BF data in a subframe, therefore minimumly in a subframe require four BS blocks, and be that hop in turn ground distributes the BF block of correspondence each time as mentioned above.The delay of jumping due to each is a BF block, and therefore the large I of BF block requires to be configured according to the delay in embody rule.And in the figure 7, due to for once relaying, therefore minimumly in a subframe require two BS blocks.The transmission unit 230 of RS the signaling comprising above BF block size and BF block assignment information is included in DF carrier wave (as, DL-MAP and UL-MAP in the beginning of each down link) on send to trunking, trunking will be known and sample to BF carrier signal at which BF block, which BF block forward this BF carrier signal at.

BS can reconfigure the distribution of BF block size and BF block, but considers from the angle of system loading, preferably, should carry out the operation that reconfigures with the frequency of speed.

All BF blocks in each BF district forward identical signal successively, and carry identical traffic carrying capacity.In each is jumped, in turn to repeat the time of delay of a BF block to send identical BF carrier signal.Therefore, each BF district only needs a BF block to distribute pattern.Fig. 9 shows such a BF block and distributes pattern.Distribute in pattern at the BF block shown in Fig. 9, define the size of MS traffic bursts.Assuming that each BF block comprises two OFDM symbol.In Fig. 9 the first positional representation of jumping RS MS1 by subframe 0 to first allocation of symbols of subframe 2 to the MS1 of the first jumping RS, to other BF block distribution can the rest may be inferred.Can find out to only have the MS of RS (that is, the MS communicated with a certain trunking) to use BF relaying, the MS (that is, the MS directly communicated with BS) of BS does not need to use BF carrier wave.Therefore Fig. 9 is not to the MS Resources allocation of BS.At each frame, can for the MS of RS distributes multiple traffic carrying capacity opportunity in different BF districts.The MS group that BF district also can be in different jumping figure provides service.The BF block pattern definition in each BF district be with other BF district independently.Different BF districts can provide service for different MS groups.Such as, a BF district provides service for some MS, and the 2nd BF district provides service for other MS.

Based on the BF block pattern that BS produces, RS will produce indication information to inform the size of MS sending/receiving burst and the position in BF carrier wave.This indication information is embedded in DL-MAP and UL-MAP of DF carrier wave, and MS can obtain this indication information from DF carrier wave.Consider that the delay of BF postpones lower than DF, BS should inform in advance this distribution pattern of RS.The DF traffic carrying capacity of such as UGS does not need Resources allocation in each frame, only has and just can upgrade BF block pattern when new connection establishment or release, therefore, distributes pattern in advance and informs that RS is feasible.

As can be seen from Figures 7 and 8, at each trunking place, in a BF district, only employ a BF block, and other BF block in Jiang Gai BF district is vacant.In order to improve the utilance of frequency resource, embodiments of the present invention propose carries out overlapping scheme by two adjacent BF districts.Figure 10 shows such scheme.As shown in Figure 10, first BF block in last BF Kuai He BF district 2 in BF district 1 there occurs overlapping.In this overlapping frame structure, interference problem must be considered.Such as in Fig. 10, owing to being separated by double bounce repeated link, BS and the 3rd jumps not interference between RS.Therefore BS and the 3rd jumping RS can concurrent working.In this case, the overlapping to carry out channeling in space of BF district can be carried out as illustrated in fig. 10.And to the whether enough problems of isolation, can consider according to concrete network topology structure.

Also overlappingly can to use this together with other DF trunking plan.Figure 11 shows another exemplary construction of embodiment of the present invention.Compare with Fig. 7 with Fig. 8, in fig. 11, DL-MAP and UL-MAP of DF carrier wave (such as, the second DL-MAP and UL-MAP jumping DF carrier wave in RS) may than DL subframe a little later BF block occur.In this case, the second MS jumping RS can obtain the distribution instruction of running time-frequency resource from the DL-MAP of most former frame.

Compared with simple DF relaying technique, the technical scheme that embodiment of the present invention provides can for providing good delay performance to the business of time-sensitive, and a frame multi-hop (being more than or equal to three jumpings) relaying technique can be realized, namely in a frame via multi-hop relay transmission of signal between the bs and ms.And compared with traditional AF relaying, the technical scheme that embodiment of the present invention provides achieves the controlled transmission of time insensitive business and overcomes unstable problem.

Be illustrated for time division duplex (TDD) system although above, but above technical scheme is changed a little, the technical scheme that embodiment of the present invention proposes can be implemented in other systems.Such as, for Frequency Division Duplexing (FDD) (FDD) system, only need remove duplexer 311 and 341 in the RS structure shown in Fig. 3, different antennas is respectively used to the transmitting-receiving of signal, the technical scheme that embodiment of the present invention proposes can be implemented.Similarly, for Half-Frequency Division Duplex (HFDD) system, it is changed part and is also only duplexer place, and these changes are that those skilled in the art can expect easily, no longer repeat at this.

In some applications, if having good isolation between base station (BS) area of coverage and the relaying area of coverage, BF relaying can be configured to AF relay function.Now, these AF relaying carrier waves are transparent to BS, and BS will be the same with common BS-MS direct communication to the process of these carrier waves.Thus form DF and the AF relay function of mixing.

Those skilled in the art should be easy to recognize, can be realized the different step of said method by programmed computer.At this, some execution modes comprise equally machine readable or computer-readable program storage device (as, digital data storage medium) and encoding machine can perform or the executable program command of computer, wherein, this instruction performs some or all steps of said method.Such as, program storage device can be digital storage, magnetic storage medium (as Disk and tape), hardware or the readable digital data storage medium of light.Execution mode comprises the programmed computer of the described step performing said method equally.

Description and accompanying drawing only illustrate principle of the present invention.Therefore it should be appreciated that those skilled in the art can advise different structures, although these different structures clearly do not describe herein or illustrate, embody principle of the present invention and be included within its spirit and scope.In addition, all examples herein mentioned clearly main only for teaching purpose with the design of the promotion this area helping reader understanding's principle of the present invention and inventor and contribute, and should be interpreted as not being the restriction to these specific examples of mentioning and condition.In addition, herein all mention principle of the present invention, aspect and execution mode statement and specific example comprise its equivalent.

Description is above only for realizing embodiments of the present invention; it should be appreciated by those skilled in the art; the any modification or partial replacement do not departed from the scope of the present invention; the scope that all should belong to claim of the present invention to limit; therefore, protection scope of the present invention should be as the criterion with the protection range of claims.

Claims

1. a relay transmission method, comprising:

Business is divided the business of paired time-sensitive and to time insensitive business;

For the running time-frequency resource that different traffic assignments is different, to make according to distributed running time-frequency resource, can buffer memory-forwarding BF relaying be carried out to the described business to time-sensitive and to described, time insensitive business be decoded-forward DF relaying.

2. method according to claim 1, wherein, the described running time-frequency resource different for different traffic assignments comprises:

Require according to the numbering of the relaying each time in repeated link, maximum relaying number and delay the size configuring BF block, and be the described block of relay distribution BF each time, wherein, described BF block is one or more continuous print orthogonal frequency division multiplex OFDM symbols.

3. method according to claim 1, also comprises:

Via DF carrier wave, mobile terminal is connected enter the internet with trunking;

Based on jumping figure and the operation quality requirement of relaying, to BF block with comprise BF Kuai BF district described in multiple continuous print and define, and be repeated link and access link distribution BF block.

4. method according to claim 3, also comprises:

Send the BF carrier wave configuration signal comprising the information relevant with described BF Kuai He BF district to each trunking in described repeated link via DF carrier wave;

The request of setting up the connection of BF carrier wave of answering mobile terminal to initiate, distributes the carrier resource of BF block based on quality of service requirement, produce or upgrade the distribution pattern of BF block;

Via DF carrier wave by the distribution pattern of described BF block and be sent to each trunking described start-up time, the distribution pattern of described BF block can be switched in described start-up time to make each trunking described.

5. method according to claim 1, wherein, BF carrier wave and DF carrier wave are distributed by base station, and BF carrier wave and DF carrier wave are continuous carrier in identical frequency band or discontinuous carrier, or the carrier wave in different frequency bands.

6. a relay transmission method, comprising:

To DF relaying of decoding to time insensitive business-forward;

Buffer memory-forwarding BF relaying is carried out to the business of time-sensitive,

Wherein, described to being be that the resource that these two kinds of business are distributed respectively is carried out according to base station to time insensitive business with to the relaying of the business of time-sensitive.

7. method according to claim 6, also comprises:

In the DF carrier wave of described DF relaying, carry the BF control signal for control BF relaying, described BF control signal comprises the size of described BF block and on which BF block, carries out the information of relaying;

Extract the described BF control signal in DF carrier wave, specified BF carries out BF relaying.

8. method according to claim 7, wherein, described BF relaying comprises:

In a BF block, the data received are transformed into digital sampling signal, row cache of going forward side by side;

The digital sampling signal of institute's buffer memory is forwarded to the next node on repeated link in another BF block.

9. method according to claim 8, also comprises:

Produce the mobile terminal MS access control signaling being used for mobile terminal access, and be sent to corresponding mobile terminal via DF carrier wave, to make can set up the mobile terminal of described correspondence to its trunking according to described MS access control signaling, trunking connects to the BF carrier wave of base station.

10. method according to claim 6, also comprises:

When there is multiple BF district, the rear one or more BF block in previous BF district and the previous of a rear BF district or more BF block is overlapped mutually, to make the multiple nodes in repeated link can concurrent working.

11. methods according to claim 6, also comprise:

If in same subframe, described BF control signal is later than described BF district and occurs, then use the BF control signal carried in most former frame to carry out BF relaying.

12. 1 kinds of base stations, comprising:

Traffic differentiation unit, for dividing the business of paired time-sensitive and to time insensitive business by business;

Resource allocation unit, for for the different running time-frequency resource of different traffic assignments, to make according to distributed running time-frequency resource, can buffer memory-forwarding BF relaying be carried out to the described business to time-sensitive and to described, time insensitive business be decoded-forward DF relaying.

13. base stations according to claim 12, also comprise:

Transmission unit, sends different business for basis respectively to the distribution of resource, and the message comprising the information relevant with Resourse Distribute is sent to trunking and mobile terminal MS.

14. 1 kinds of trunkings, comprising:

Decoding-forward DF TU Trunk Unit, for carrying out DF relaying to time insensitive business;

Buffer memory-forwarding BF TU Trunk Unit, for carrying out BF relaying to the business of time-sensitive,

15. trunkings according to claim 14, wherein,

Described DF TU Trunk Unit comprises media access control MAC module, for obtaining the BF relay and control signaling of control BF relaying;

Described BF TU Trunk Unit comprises:

Buffer, for the data of the business to time-sensitive that buffer memory in a BF block receives;

BF controller, for according to described BF relay and control signaling, in another BF block by institute's buffer memory, to the data retransmission of the business of time-sensitive to the next node on repeated link.

16. 1 kinds of relay systems, comprise the base station according to claim 12 or 13, one or more trunking according to claims 14 or 15 and one or more mobile terminal.

17. 1 kinds of relay systems, comprise the base station according to claim 12 or 13, one or more trunking and one or more mobile terminal, wherein, described trunking is configured to amplify-forward (AF) pattern, and on BF carrier wave, directly send control signal by described base station, to form DF and the AF forward relay system of mixing.