CN101388742A - Data transmission method, system and device in relay system - Google Patents
Data transmission method, system and device in relay system Download PDFInfo
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Abstract
The invention discloses a method for transferring data in a relay system, which comprises the following steps: allocating more than one bound resource on a data-transmission path and indicating the allocated resource as primary transmission, transmitting data to a current receiving entity on the allocated resource, and enabling the current receiving entity to transfer the data to a subsequent bound receiving entity on the allocated resource after the current receiving entity accurately receives the data. The invention further discloses a system for transmitting data in the relaying system, the relay system, and an entity for allocating and transmitting resources and a resource allocating entity. With the method, the transmission time delay of the data is reduced, and the problem of the subsequent bound receiving entity that the decoding accuracy is low which is caused by receiving misdate is further avoided.
Description
Technical field
The present invention relates to communication technical field, be specifically related to the method, system and device of transfer of data in a kind of relay system.
Background technology
In the wireless communication system, become and multipath fading when having, therefore higher bit error rate is arranged owing to wireless mobile channel.In order to ensure service quality, generally can adopt error control method in data link layer.It is a kind of feedback retransmission mechanism of bottom that mixing wherein retransmits (HARQ, Hybrid Automatic Repeat Request) technology automatically, and HARQ can retransmit in physical layer.Its basic functional principle comprises: transmitting terminal adds cyclic redundancy check (CRC) (CRC with the data block that needs send, CyclicRedundancy Check) data, through after the Channel Transmission, receiving terminal is decoded to data block, and data block is carried out CRC calculate, can whether correctly be received by the judgment data piece according to result of calculation.Then, receiving terminal can feed back accepting state to transmitting terminal, and transmitting terminal determines whether data block is retransmitted according to the state information of receiving terminal feedback, if the receiving terminal feedback is to receive correct (ACK), then transmitting terminal begins to send new data; If the receiving terminal feedback is to receive wrong (NACK), then transmitting terminal retransmits data block.The first transmission that receiving terminal will receive and the frame of re-transmission merge decoding, in conjunction with the signal of twice transmission, can be correctly decoded easilier, thereby reduce transmission error rates.HARQ is a kind of stop-and-wait protocol (SAW, Stop and Wait), and before the incorrect reception of current data block, transmitting terminal can not send new data.
Because the superior function of HARQ technology, adopted by present numerous standards, comprise that the 3GPP high-speed packet inserts (HSPA, High Speed Packet Access), standards such as 3GPP Long Term Evolution (LTE, LongTerm Evolution), international IEEE (IEEE) 802.16 and 802.16j.
In traditional cellular network, base station (BS, Base Station) (MS, MobileStation) wireless connections between are direct wireless connections, just adopt the notion of " single-hop " with travelling carriage.Yet the planning stage that covers in the base station is difficult to avoid landform, ground object may cause shadow fading (shadow fading) effect of signal in the subregion usually, therefore need utilize relay system to improve the covering of signal.In this system, relay station (RS, Relay Station) at first receives the physical frame that sends from base station/user side, decodes, and again data is repackaged into physical frame after decoding is correct, is transmitted to user side/base station.Suitable placement RS can improve the covering of signal, can realize the regeneration of signal simultaneously when the relaying forward signal, and working along both lines to make the received signal quality of user side significantly improve.
From the angle of resource allocation, existing trunking scheme is divided into the centralized scheduling mode, and promptly BS concentrates and carries out resource allocation and scheduling, and the distributed scheduling mode, and promptly BS and RS dispatch one's own resource respectively.Before transfer of data, distribute different resources (comprising up-downgoing) need for different MS, for example in 802.16, can the assignation information of resource be notified to MS by the descending mapping in the physical frame (DL MAP).When adopting the HARQ technology, except needs notice resource information, also needing to notify the frame of this transmitted over resources is first transmission, and still to the re-transmission of transmission last time, the recipient can carry out correct decoding according to these information like this.If first transmission, then the recipient only decodes to the current frame that receives, the data that obtain transmitting; If retransmit, the frame that receives when frame that will receive when then the recipient will be transmitted for the first time and current the re-transmission merges decoding, the data that obtain transmitting.
Double bounce system with 802.16j is an example, and when adopting the HARQ technology, at centralized scheduling, BS distributes a resource of jumping at every turn, and the receiving terminal of this jump by the time receives correct, after BS receives the ACK of feedback, just begins to carry out the resource allocation of next jumping.Fig. 1 is the method flow diagram of transfer of data in the existing relay system, and as shown in Figure 1, this method may further comprise the steps:
Step 100～step 101:BS Resources allocation is to first RS that jumps, and is designated as first transmission, sends data to RS then on the resource of being distributed.For example, in 802.16j, BS becomes physical channel burst (burst) to send on physical channel data configuration; And in 3GPP HSPA/LTE etc., with the form transmission of frame (frame).Frame and burst are identical at root, and only are the different nouns that uses in different standards.
Step 102～step 105:RS receives and decoded frame or burst, and check errors is preserved this frame or burst; And to BS feedback NACK response message; After BS receives this response, redistribute first and jump resource, and be designated as re-transmission; BS retransmits the form of burst of data configuration one-tenth or frame to give RS then.
Step 106～step 107:RS is the frame or the burst that receive in the step 102 and preserve, merges decoding with the frame or the burst of this re-transmission, and verification is correct, obtains data; And to BS feeding back ACK response message.
After step 108:BS receives the ACK of RS feedback, distribute second resource of jumping from RS to MS, and be designated as first transmission.
Step 109:RS transmits the data (for example, in 802.16j, the form that RS re-constructs into burst sends to MS) that receive from BS to MS.
Step 110～step 113:MS receives and decoded frame or burst, and check errors is preserved this frame or burst; And feedback NACK response message is given BS; After BS receives the NACK of MS feedback, redistribute second resource of jumping from RS to MS, and be designated as re-transmission; RS retransmits the data that receive from BS to MS.
The frame or the burst of preserving when step 114～step 115:MS will transmit for the first time merge decoding with the frame or the burst of this re-transmission, after verification is correct, give BS feeding back ACK response message.
By foregoing description as can be known, existing relay system mixes in the re-transmission automatically, regardless of being first transmission or retransmitting that BS is the hop-by-hop Resources allocation.Like this, after BS need wait until that the ACK of RS arrives, just can distribute the resource of next jumping, RS just can transmit, thereby causes the increasing of propagation delay time.For real time business, will cause professional service quality (QoS, Quality of Service) to reduce, thereby reduce user's business experience.
In like manner, in multihop system and other system, resource allocation entity is first resource of jumping on the distribute data transmission path at first, after receiving the correct response message of expression Data Receiving that current receiving entity returns, just can distribute next to jump resource, then, current receiving entity just can be received entity to follow-up jumper connection and transmit data, thereby causes propagation delay time to strengthen.For real time business, will cause professional service quality to reduce, thereby reduce user's business experience.
Summary of the invention
The embodiment of the invention provides the method for transfer of data in a kind of relay system, reduces the propagation delay time of data.
The embodiment of the invention also provides system and a kind of relay system of transfer of data in a kind of relay system, reduces the propagation delay time of data.
The embodiment of the invention also provides a kind of resource allocation and sending entity, reduces the propagation delay time of data.
The embodiment of the invention also provides a kind of resource allocation entity, reduces the propagation delay time of data, and increases the accuracy that merges decoding among the HARQ.
For achieving the above object, the technical scheme of the embodiment of the invention is achieved in that
The method of transfer of data in a kind of relay system comprises:
More than a resource of jumping, and the resource of described distribution is designated as first transmission on the distribute data transmission path;
On the resource of described distribution, send data, after making that current receiving entity is correct and receiving described data, on the resource of described distribution, receive entity and transmit described data to follow-up jumper connection to current receiving entity.
The system of transfer of data in a kind of relay system comprises resource allocation entity, sending entity, current receiving entity and follow-up jumper connection receipts entity,
Described resource allocation entity is used on the distribute data transmission path more than a resource of jumping; The resource of described distribution is designated as first transmission;
Described sending entity is used for sending data to current receiving entity on the resource that described resource allocation entity distributes;
Described current receiving entity is used to receive the data that described sending entity sends on the resource of distributing, correctly receive described data after, on the resource of described distribution, receive entity to follow-up jumper connection and transmit described data;
Described follow-up jumper connection is received entity, is used to receive the data that current receiving entity sends on the resource that described resource allocation entity distributes.
A kind of relay system comprises base station BS and relay station RS,
Described BS is used on the distribute data transmission path resource of jumping more than, and the resource of described distribution is designated as first transmission; And on the resource of described distribution, send data to RS;
Described RS is used to receive the data that described BS sends on the resource of distributing, correctly receive described data after, on the resource of described distribution, receive entity to follow-up jumper connection and transmit described data.
A kind of resource allocation and sending entity comprise resource distribution module and data transmission blocks,
Described resource distribution module is used on the distribute data transmission path more than a resource of jumping;
Described data transmission blocks is used on the resource that described resource distribution module distributes data being sent to current receiving entity.
A kind of resource allocation entity comprises distribution module and receiver module,
Described distribution module is used on the distribute data transmission path more than a resource of jumping; Receiving from receiver module after expression that current receiving entity returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping, and with in the resource more than a jumping on the described data transfer path of redistributing, the resource of redistributing to follow-up jumper connection receipts entity is designated as first transmission;
Described receiver module is used to receive the wrong response message of expression reception that current receiving entity returns, and is forwarded to described distribution module.
Compared with prior art, the technical scheme that the embodiment of the invention provided, on the distribute data transmission path more than a resource of jumping, on the resource of distributing, send data to current receiving entity, after making that current receiving entity correctly receives data, can directly receive entity and transmit described data to follow-up jumper connection, and needn't wait for that receiving expression from current receiving entity receives correct response, distribute next to jump after the resource, transmit again, thereby reduced propagation delay time, avoided the problem that QoS reduces and customer service experience reduces that causes greatly owing to propagation delay time.
Description of drawings
Fig. 1 is the method flow diagram of transfer of data in the existing relay system;
Fig. 2 is the method flow diagram of transfer of data when the reception data are correct in the embodiment of the invention relay system;
Fig. 3 is the method flow diagram of transfer of data when receiving error in data in the embodiment of the invention relay system;
Fig. 4 is the another kind of method flow diagram of transfer of data when receiving error in data in the embodiment of the invention relay system;
The system construction drawing of transfer of data in Fig. 5 embodiment of the invention relay system.
Embodiment
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
The method of transfer of data in the relay system that the embodiment of the invention provides, more than a resource of jumping, and the resource that will distribute is designated as first transmission on the distribute data transmission path, on the resource of distribution to current receiving entity transmission data; After making current receiving entity correctly receive data, on the resource of described distribution, receive entity and transmit described data to follow-up jumper connection.
This method further comprises: receiving after expression that current receiving entity returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping, and on deallocated resources, pass through current receiving entity, receive entity to follow-up jumper connection and retransmit described data; Follow-up jumper connection is received entity and only the data that receive on deallocated resources is decoded.
Below be transmitted as example with the 802.16j system descending, the technical scheme of transfer of data is described in detail in the relay system that the embodiment of the invention is provided.In the centralized scheduling mode of double bounce 802.16j system, the function of resource allocation and transmission all realizes that by BS current receiving entity is RS, and it is MS that follow-up jumper connection is received entity.
Following the embodiment of the invention is described in detail after, those skilled in the art understand easily: for the system more than double bounce, method of the present invention can similarly be used, this moment, resource allocation entity may be BS or the RS with resource allocation function, and sending entity may be the RS of resource allocation entity or subordinate, for example first jump RS, current receiving entity for example is second RS that jumps, and follow-up jumper connection receipts entity can be the RS of subordinate of current receiving entity.For uplink, method of the present invention also can similarly be used, this moment, resource allocation entity may be BS or the RS with resource allocation function, and sending entity may be RS or MS on the transmission path, current receiving entity is the RS that receives the sending entity data, and follow-up jumper connection is received RS or BS that entity is reception data that current receiving entity is transmitted.
Fig. 2 is the method flow diagram of transfer of data when the reception data are correct in the embodiment of the invention relay system.As shown in Figure 2, this method may further comprise the steps:
Step 200～step 201:BS distributes the resource of entire path, comprises that first jumps and second resource of jumping, and is designated as first transmission; And to RS transmission data.
BS becomes the physical channel burst form when RS sends data with this data configuration.And in standards such as other 3GPP HSPA/LTE, with the form transmission of data configuration framing, the difference that the two does not have essence only is to describe difference.
In this step, when Resources allocation, can utilize HARQ identifier number (AI_SN, HARQID Sequence Number) indication is first transmission or retransmits in the data of the transmitted over resources of this distribution, when AI_SN was identical with last value, the data that are illustrated in this transmitted over resources were last re-transmissions; When AI_SN and last value not simultaneously, the data that are illustrated in this resource transmission are first transmission.
Step 202～step 203:RS receives and the decoding burst, and verification is correct, obtains data; On the second jumping resource of distributing, transmit data then to MS.
The form that RS will decode and the correct data of verification re-construct into physical channel burst is transmitted to MS.
Step 204:MS receives and the decoding burst, after verification is correct, obtains the data that BS is transferred to MS.
Step 205:RS feeding back ACK is given BS.
Step 206:MS feeding back ACK is given BS or RS.
In this method flow, do not limit sequencing for the execution of step 204 and step 205, step 205 can be before step 204, afterwards, or carries out simultaneously with step 204.Wherein the ACK of MS feedback also can give RS can for BS in the step 206, does not influence method of the present invention.
As seen, method flow shown in Figure 2 by the resource of BS distribution entire path, just can needn't be waited until after BS receives ACK and distribute next jumping resource just to transmit, thereby reduce the propagation delay time of data so that RS after correct reception data, directly is transmitted to MS.
But this for the entire path Resources allocation scheme of (comprising that first jumps and second jumping) in, if the incorrect data that receive of first RS that jumps, RS just can't send data on the resource of next jumping, but MS does not also know, still can on the resource of distributing, receive data, because the burst on the corresponding resource is empty, therefore decoding error can occur.Because in the HARQ technology, receive when wrong in first transmission, the misdata that receives is preserved, be used for merging decoding with the data of the re-transmission of back.Receive the data of re-transmission as MS after, when the sky burst that utilizes first transmission to obtain merges decoding with the re-transmission burst that receives later, because empty burst does not comprise any data message, therefore be a kind of interference, reduce the back on the contrary and merged the accuracy of decoding, reduced systematic function.
Fig. 3 is the method flow diagram of transfer of data when receiving error in data in the embodiment of the invention relay system.As shown in Figure 3, this method may further comprise the steps:
Step 300～step 301:BS distributes the resource of entire path, comprises that first jumps and second resource of jumping, and is designated as first transmission; And to RS transmission data.
Step 302:RS receives and the decoding burst, when determining that reception is wrong, preserves current burst, is used for follow-up merging decoding.
Step 303:MS receives, decodes and preserve in the resource of BS indication and happens suddenly.
In this step,, do not carry out data forwarding because RS receives mistake, therefore what MS received on the resource of indication is an empty burst, but MS and do not know that this is an empty burst, decodes, and preserve this burst, wait until with follow-up re-transmission burst and merge decoding.
Step 304～step 306:RS is to BS feedback NACK response message; After BS receives the NACK of RS, for carrying out data re-transmission, redistribute the resource of entire path, and in the resource of redistributing to RS, be designated as re-transmission, but in the resource of redistributing to MS, be designated as first transmission; Then to RS data retransmission (with the form of physical channel burst).
At the indication deallocated resources is to retransmit or when transmitting for the first time, also the resource of redistributing to RS also can be designated as first transmission.
The burst of preserving when step 307～step 308:RS just passes data merges decoding with the burst of current reception, and decoding is correct; The data that obtain after will decoding then are to send to MS on the data re-transmission deallocated resources at BS.
If at the indication deallocated resources is to retransmit or when transmitting for the first time, the resource of redistributing to RS is designated as first transmission, when then RS receives the burst of this transmission, handle as new burst.
The burst that step 309:MS receives and decoding receives, owing to when BS redistributes resource, the resource of redistributing to MS is designated as first transmission, so MS thinks that current burst is first transmission, current burst is decoded separately, and decode this burst and verification are correct.
In this step, MS decodes separately to the burst of current reception, and not with step 303 in the burst of preserving merge decoding, further, can also be with the burst erasure of preserving in the step 303.
Step 310:RS feeding back ACK response message is given BS.
Step 311:MS feeding back ACK response message is given BS or RS.
In the method flow described above, for the execution of step 303 and step 304, and the execution of step 309 and step 310 does not limit sequencing.MS feeding back ACK response message is given BS or RS in the step 311, does not influence method of the present invention.
As seen, BS is designated as re-transmission with the resource of redistributing to RS in this flow process when redistributing the resource of entire path, merges decoding thereby make RS will retransmit with the data that just pass, and has improved the accuracy rate of decoding; And the resource that will redistribute to MS is designated as first transmission, thereby makes MS after receiving the data of re-transmission, and therefore the data of preserving when deletion just passes have been avoided owing to preserve the problem of the decoding error rate rising that the sky burst when just passing causes.
Fig. 4 is the other method flow chart of transfer of data when receiving error in data in the embodiment of the invention relay system.As shown in Figure 4, this method may further comprise the steps:
Step 400～step 402 is identical with step 300～step 302, is not described in detail in this.
Step 403:RS returns to BS and receives wrong response message.
Step 404～these data of step 405:RS notice MS are misdatas; MS is not received in the burst of BS for the transmitted over resources of its distribution after receiving notice, perhaps receive but do not preserve this burst.
Step 406:BS distributes the resource of whole data transfer path, and is designated as re-transmission.
Step 407～step 409 is identical with step 406～step 408, is not described in detail in this.
Step 410:MS only decodes to current burst, after verification is correct, obtains data.
In this step, MS only decodes to current burst, do not receive mistake with RS after, merge in the second sky burst of jumping transmitted over resources, thereby avoided merging the problem that the decoding accuracy that causes descends with the sky burst.
Step 411～step 412:RS and MS return to BS respectively and receive correct response message, and perhaps MS returns to RS and receives correct response message, and RS returns to BS and receives correct response message.
In the flow process described above, step 404 also can be to send the announcement information that these data are misdatas by BS to MS.Step 403 does not limit sequencing with the execution of step 404 and step 405.
As seen, receive the data of BS transmission in the RS mistake after, not received or receive but be not kept at BS by RS or BS notice MS is the data that receive on the resource of MS distribution, thereby make MS after receiving the data of re-transmission, when decoding, the misdata that receives in the time of can not merging first the biography, the problem that the misdata when therefore having avoided owing to the first biography of preservation causes the decoding error rate to raise.
Fig. 5 is the system construction drawing of transfer of data in the embodiment of the invention relay system.As shown in Figure 5, this system comprises resource allocation entity, sending entity, current receiving entity and follow-up jumper connection receipts entity.
Wherein, more than a resource of jumping, the resource of this distribution is designated as first transmission on the resource allocation entity distribute data transmission path; Sending entity sends data to current receiving entity on the resource that resource allocation entity distributes; Current receiving entity is used to receive the data that sending entity sends on the resource of distributing, correctly receive data after, on the resource of distributing, receive entity to follow-up jumper connection and transmit data; Follow-up jumper connection is received entity, is used to receive the data that current receiving entity sends on the resource that resource allocation entity distributes.
Resource allocation entity is redistributed on the data transfer path more than a resource of jumping receiving after expression that current receiving entity returns receives wrong response message; Sending entity sends data to current receiving entity on the resource allocation entity deallocated resources; Current receiving entity after determining to receive error in data, returns expression to resource allocation entity and receives wrong response message; On the resource allocation entity deallocated resources, correctly receive data after, receive entity to follow-up jumper connection and send data; Follow-up jumper connection is received entity and only the data that receive on the resource allocation entity deallocated resources is decoded.
The resource that resource allocation entity will be distributed to follow-up jumper connection receipts entity is designated as first transmission; Follow-up jumper connection is received entity according to this resource indication, only the data that receive on deallocated resources is decoded; Perhaps, when resource allocation entity or sending entity or current receiving entity receive error in data at current receiving entity, receive the notice of entity transmitting and receiving data mistake to follow-up jumper connection; Follow-up jumper connection is received entity after receiving this notice, only the data that receive on deallocated resources is decoded.
Specifically, resource allocation entity comprises distribution module and receiver module, more than a resource of jumping, the resource of this distribution is designated as first transmission on the module assigns data transfer path; Receiving from receiver module after expression that current receiving entity returns receives wrong response message, redistributing on the data transfer path, and will redistribute the resource of receiving entity to follow-up jumper connection and be designated as first transmission more than a resource of jumping; Receiver module receives the wrong response message of expression reception that current receiving entity returns, and is forwarded to distribution module.
During downlink transfer, resource allocation entity and/or sending entity can be the enode b (eNode B) in the Node B in the 3GPP HSPA network (Node B), the 3GPP LTE network or BS among the IEEE802.16/802.16j or the RS with resource allocation function; Current receiving entity can be RS; Follow-up jumper connection is received entity can be MS or subscriber equipment (UE, User Equipment), or is in the RS or the BS of follow-up jumping on the transmission path.During downlink transfer, resource allocation entity is BS or RS with resource allocation function, sending entity is MS or UE or RS, current receiving entity is next the jumping RS that is in sending entity on the data transfer path, and it is RS or the BS that is in current next jumping of receiving entity on the data transfer path that follow-up jumper connection is received entity.
When resource allocation entity and sending entity are synthesized to a network equipment, for example, synthesize in BS or RS, this network equipment comprises resource distribution module and data transmission blocks.Wherein, resource distribution module is used on the distribute data transmission path resource of jumping more than, and the resource of this distribution is designated as first transmission; Data transmission blocks is used for the resource in the resource distribution module distribution, and current receiving entity sends data.
Resource distribution module is receiving after expression that current receiving entity returns receives wrong response message, redistributes on the data transfer path more than a resource of jumping, and is designated as first transmission with redistributing the resource of receiving entity to follow-up jumper connection; Data transmission blocks is used at the resource distribution module deallocated resources, to current receiving entity data retransmission.
Resource distribution module also can be redistributed on the data transfer path more than a resource of jumping receiving after expression that current receiving entity returns receives wrong response message; And receive the notice that entity sends error in data to follow-up jumper connection.
Corresponding to the centralized scheduling mode, the data transmission system in the relay system can comprise BS and RS.Wherein, more than a resource of jumping, the resource of distributing is designated as first transmission on the BS distribute data transmission path; And on the resource of distributing, send data to RS; RS receives the data that BS sends on the resource of distributing, correctly receive data after, on the resource that BS distributes, receive entity to follow-up jumper connection and transmit data.
Specifically, BS comprises resource distribution module and data transmission blocks.More than a resource of jumping, the resource of distributing is designated as first transmission on the resource distribution module distribute data transmission path; Receiving after expression that RS returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping, in the resource more than a jumping on this data transfer path of redistributing, the resource of redistributing to follow-up jumper connection receipts entity is designated as first transmission; Data transmission blocks is used on the resource that resource distribution module distributes data being sent to RS.
Perhaps, more than a resource of jumping, the resource of distributing is designated as first transmission on the resource distribution module distribute data transmission path of BS; Receiving after expression that RS returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping; Receiving after expression that RS returns receives wrong response message, receive the notice that entity sends error in data to follow-up jumper connection; Data transmission blocks is sent to described RS with data on the resource that resource distribution module distributes.
The order of embodiment manner of execution do not represented in " step " speech that the invention described above embodiment describes yet.
In distributed scheduling, the BS that is similar among the top embodiment of RS with scheduling authority carries out scheduling of resource, this RS may be connected with the RS of subordinate of multi-hop down, this RS also can carry out on whole data transfer path or the data transfer path more than a resource allocation of jumping like this, and after receiving the NACK response message of the RS of subordinate, redistribute on entire path or the data transfer path more than a resource of jumping.At this moment, resource allocation entity is RS.In three jumping systems, sending entity can be RS, and current receiving entity can be the RS of subordinate of this RS, and it can be MS that follow-up jumper connection is received entity; In more than three systems of jumping, sending entity also can be the RS of this RS subordinate, and it also can be the RS of this RS subordinate that follow-up jumper connection is received entity.
By the above as can be seen, the technical scheme that the embodiment of the invention provided, on the resource allocation entity distribute data transmission path more than a resource of jumping, on the resource of distributing, data are sent to current receiving entity by sending entity, thereby make current receiving entity when the described data of correct reception, can on the resource of distributing, directly forward the data to follow-up jumper connection and receive entity.Thereby make current receiving entity after correct reception data, just data directly can be forwarded to follow-up jumper connection and receive entity, and needn't wait for that resource allocation and sending entity receive expression and receive correct response, distribute second to jump after the resource, transmit again, thereby reduced propagation delay time, avoided the QoS that causes greatly owing to propagation delay time to reduce and reduce the problem that customer service is experienced.
Simultaneously, after current receiving entity receives error in data, when resource allocation entity distributes the resource of data retransmission, the resource of distributing to follow-up jumper connection receipts entity is designated as first transmission; Perhaps notifying follow-up jumper connection to receive entity by resource allocation entity or sending entity or current receiving entity is misdata in the data of the transmitted over resources of distributing.Therefore, after follow-up jumper connection receipts entity receives the data of re-transmission, when decoding, can not be incorporated in resource allocation and sending entity misdata, thereby avoid owing to merge the problem of the decoding error rate rising that misdata causes for the first transmission that receives on the resource of its distribution.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1, the method for transfer of data in a kind of relay system is characterized in that this method comprises:
More than a resource of jumping, and the resource of described distribution is designated as first transmission on the distribute data transmission path;
On the resource of described distribution, send data, after making that current receiving entity is correct and receiving described data, on the resource of described distribution, receive entity and transmit described data to follow-up jumper connection to current receiving entity.
2, the method for claim 1 is characterized in that, described on the resource of distributing after current receiving entity sends data, this method further comprises:
Receiving after expression that current receiving entity returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping, and on deallocated resources by current receiving entity, receive entity to follow-up jumper connection and retransmit described data, make follow-up jumper connection receive entity and only the data that receive on deallocated resources are decoded.
3, method as claimed in claim 2 is characterized in that, after the described resource of redistributing on the data transfer path more than a jumping, this method further comprises:
In the resource more than a jumping on the described data transfer path of redistributing, the resource of redistributing to follow-up jumper connection receipts entity is designated as first transmission, make follow-up jumper connection receive entity, only the data that receive on deallocated resources are decoded according to this resource indication.
4, method as claimed in claim 3 is characterized in that, utilizes to mix to retransmit HARQ identifier AI_SN automatically, and the described resource of redistributing to follow-up jumper connection receipts entity is designated as first transmission.
5, method as claimed in claim 4, it is characterized in that, when redistributing resource for follow-up jumper connection receipts entity, use and the different AI_SN value of AI_SN value that last time, Resources allocation was used are designated as first transmission with the described resource of redistributing to follow-up jumper connection receipts entity.
6, method as claimed in claim 2, it is characterized in that, when current receiving entity receives described error in data, this method further comprises: receive the notice that entity sends this Data Receiving mistake to follow-up jumper connection, making follow-up jumper connection receive entity receives and according to this notice, only the data that receive on deallocated resources is decoded.
7, the system of transfer of data in a kind of relay system is characterized in that, this system comprises resource allocation entity, sending entity, current receiving entity and follow-up jumper connection receipts entity,
Described resource allocation entity is used on the distribute data transmission path more than a resource of jumping; The resource of described distribution is designated as first transmission;
Described sending entity is used for sending data to current receiving entity on the resource that described resource allocation entity distributes;
Described current receiving entity is used to receive the data that described sending entity sends on the resource of distributing, correctly receive described data after, on the resource of described distribution, receive entity to follow-up jumper connection and transmit described data;
Described follow-up jumper connection is received entity, is used to receive the data that current receiving entity sends on the resource that described resource allocation entity distributes.
8, system as claimed in claim 7 is characterized in that,
Described resource allocation entity is redistributed on the data transfer path more than a resource of jumping receiving after expression that current receiving entity returns receives wrong response message;
Described sending entity sends described data to current receiving entity on the resource that described resource allocation entity distributes;
Described current receiving entity returns expression to described resource allocation entity and receives wrong response message after determining to receive described error in data; On described resource allocation entity deallocated resources, correctly receive data after, receive entity to follow-up jumper connection and transmit described data;
Described follow-up jumper connection is received entity and only the data that receive on described resource allocation entity deallocated resources is decoded.
9, system as claimed in claim 8 is characterized in that, described resource allocation entity is with in the described resource of redistributing more than a jumping, and the resource of redistributing to follow-up jumper connection receipts entity is designated as first transmission;
Follow-up jumper connection is received entity according to this resource indication, only the data that receive on deallocated resources is decoded.
10, system as claimed in claim 8 is characterized in that, when described resource allocation entity or sending entity or described current receiving entity receive error in data at described current receiving entity, receives the notice of entity transmitting and receiving data mistake to follow-up jumper connection;
Described follow-up jumper connection is received entity after receiving described notice, only the data that receive on deallocated resources is decoded.
11, a kind of relay system is characterized in that, this system comprises base station BS and relay station RS,
Described BS is used on the distribute data transmission path resource of jumping more than, and the resource of described distribution is designated as first transmission; And on the resource of described distribution, send data to RS;
Described RS is used to receive the data that described BS sends on the resource of distributing, correctly receive described data after, on the resource of described distribution, receive entity to follow-up jumper connection and transmit described data.
12, system as claimed in claim 11 is characterized in that, described BS comprises resource distribution module and data transmission blocks,
Described resource distribution module is used on the distribute data transmission path resource of jumping more than, and the resource of described distribution is designated as first transmission; Receiving after expression that described RS returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping, in the resource more than a jumping on this data transfer path of redistributing, the resource of redistributing to follow-up jumper connection receipts entity is designated as first transmission;
Described data transmission blocks is used on the resource that described resource distribution module distributes data being sent to described RS.
13, system as claimed in claim 11 is characterized in that, described BS comprises resource distribution module and data transmission blocks,
Described resource distribution module is used on the distribute data transmission path resource of jumping more than, and the resource of described distribution is designated as first transmission; Receiving after expression that described RS returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping; Receiving after expression that described RS returns receives wrong response message, receive the notice that entity sends error in data to follow-up jumper connection;
Described data transmission blocks is used on the resource that described resource distribution module distributes data being sent to described RS.
14, a kind of resource allocation and sending entity is characterized in that, this resource allocation and sending entity comprise resource distribution module and data transmission blocks,
Described resource distribution module is used on the distribute data transmission path more than a resource of jumping;
Described data transmission blocks is used on the resource that described resource distribution module distributes data being sent to current receiving entity.
15, resource allocation as claimed in claim 14 and data sending entity, it is characterized in that, described resource distribution module is receiving after expression that current receiving entity returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping, in the resource more than a jumping on the described data transfer path of redistributing, the resource of redistributing to follow-up jumper connection receipts entity is designated as first transmission.
16, resource allocation as claimed in claim 14 and data sending entity is characterized in that, described resource distribution module is received the notice that entity sends error in data receiving after expression that current receiving entity returns receives wrong response message to follow-up jumper connection.
17, a kind of resource allocation entity is characterized in that, this resource allocation entity comprises distribution module and receiver module,
Described distribution module is used on the distribute data transmission path more than a resource of jumping; Receiving from receiver module after expression that current receiving entity returns receives wrong response message, redistribute on the data transfer path more than a resource of jumping, and with in the resource more than a jumping on the described data transfer path of redistributing, the resource of redistributing to follow-up jumper connection receipts entity is designated as first transmission;
Described receiver module is used to receive the wrong response message of expression reception that current receiving entity returns, and is forwarded to described distribution module.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101521754A CN101388742A (en) | 2007-09-14 | 2007-09-14 | Data transmission method, system and device in relay system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101521754A CN101388742A (en) | 2007-09-14 | 2007-09-14 | Data transmission method, system and device in relay system |
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| CN101388742A true CN101388742A (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101521754A Pending CN101388742A (en) | 2007-09-14 | 2007-09-14 | Data transmission method, system and device in relay system |
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| CN101707808A (en) * | 2009-11-30 | 2010-05-12 | 中兴通讯股份有限公司 | Scheduling method and device in long-term evolution system |
| CN101882982A (en) * | 2009-05-04 | 2010-11-10 | 大唐移动通信设备有限公司 | Method and equipment for feeding back and processing ACK/NACK information |
| CN101895379A (en) * | 2009-05-21 | 2010-11-24 | 中兴通讯股份有限公司 | Method and system for realizing uplink retransmission of access link |
| WO2011097829A1 (en) * | 2010-02-12 | 2011-08-18 | 上海贝尔股份有限公司 | Method and device for handling uplink/downlink hybrid automatic repeat request (harq) process in wireless relay network |
| CN102377544A (en) * | 2010-08-10 | 2012-03-14 | 普天信息技术研究院有限公司 | Retransmission method in communication system |
| CN108809480A (en) * | 2017-04-28 | 2018-11-13 | 大唐移动通信设备有限公司 | A kind of data receiver method and device |
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| CN101882982A (en) * | 2009-05-04 | 2010-11-10 | 大唐移动通信设备有限公司 | Method and equipment for feeding back and processing ACK/NACK information |
| CN101882982B (en) * | 2009-05-04 | 2014-07-23 | 电信科学技术研究院 | Method and equipment for feeding back and processing ACK/NACK information |
| CN101895379A (en) * | 2009-05-21 | 2010-11-24 | 中兴通讯股份有限公司 | Method and system for realizing uplink retransmission of access link |
| CN101895379B (en) * | 2009-05-21 | 2014-09-10 | 中兴通讯股份有限公司 | Method and system for realizing uplink retransmission of access link |
| CN101707808A (en) * | 2009-11-30 | 2010-05-12 | 中兴通讯股份有限公司 | Scheduling method and device in long-term evolution system |
| WO2011097829A1 (en) * | 2010-02-12 | 2011-08-18 | 上海贝尔股份有限公司 | Method and device for handling uplink/downlink hybrid automatic repeat request (harq) process in wireless relay network |
| CN102652443A (en) * | 2010-02-12 | 2012-08-29 | 上海贝尔股份有限公司 | Method and device for handling uplink/downlink hybrid automatic repeat request (HARQ) process in wireless relay network |
| CN102377544A (en) * | 2010-08-10 | 2012-03-14 | 普天信息技术研究院有限公司 | Retransmission method in communication system |
| CN108809480A (en) * | 2017-04-28 | 2018-11-13 | 大唐移动通信设备有限公司 | A kind of data receiver method and device |
| WO2020134258A1 (en) * | 2018-12-27 | 2020-07-02 | 中兴通讯股份有限公司 | Data retransmission decoding method, apparatus and system, and communication device |
| US12015486B2 (en) | 2018-12-27 | 2024-06-18 | Zte Corporation | Data retransmission decoding method, apparatus and system, and communication device |
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