CN101860900B - Downlink and uplink transmission method of synchronous data - Google Patents

Downlink and uplink transmission method of synchronous data Download PDF

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Publication number
CN101860900B
CN101860900B CN200910131820.3A CN200910131820A CN101860900B CN 101860900 B CN101860900 B CN 101860900B CN 200910131820 A CN200910131820 A CN 200910131820A CN 101860900 B CN101860900 B CN 101860900B
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relay station
resource
sends
information
node
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CN101860900A (en
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刘扬
曲红云
陈玉芹
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a downlink and uplink transmission method of synchronous data, wherein the downlink transmission method of synchronous data comprises the following steps: receiving a first resource allocation message from a first node by a reference relay station, and receiving downlink data sent by the first node according to the first resource allocation message; if the reference relay station wrongly receives the downlink data, a negative feedback is sent to the first node to enable the first node to send the downlink data again to the reference relay station on a first preset resource; and if the reference relay station exactly receives the downlink data, a second resource allocation message and the downlink data are sent to a second node.

Description

Descending and the ascending transmission method of synchrodata
Technical field
The present invention relates to the communications field, particularly relate to the descending of a kind of synchrodata and ascending transmission method.
Background technology
At present, wireless communication system mainly uses electromagnetic wave to communicate with wireless communication terminal (hereinafter referred to as terminal), wherein, this terminal can fixed terminal, also can be mobile terminal, in practice, terminal can be mobile phone or the notebook computer etc. with wireless communication card.
In the ordinary course of things, terminal is all positioned within the wireless coverage of system, and the wave frequency distributing to terminal is divided into multiple carrier frequency by system, using the plurality of carrier frequency as radio communication channel.Further, wireless communication system utilizes the radio communication channel of specifying to provide wireless coverage in certain geographic range by base station, and this geographic range is called community, and base station is generally all positioned on the centre position of community.
In wireless communication procedure, on the one hand, the coverage of wireless network can be subject to the impact of various factors.Such as, towering building may block the wireless signal of base station, causes the wireless signal in certain region seriously to weaken; In addition, cell edge signal weaken the reception error rate that can increase terminal.On the other hand, the capacity requirement of wireless communication system also can be subject to various factors impact.Such as, when user sharply increases (such as, when holding exhibition, a certain region number rolls up) or call quantity sharply increases (such as, when typhoon arrives, a lot of user can dial phone) time, then need to increase the capacity of wireless communication system; And in remote rural area or mountain area, the capacity of a base station often can not, with full in its coverage, now need the coverage expanding wireless communication system to utilize unnecessary power system capacity.
Based on foregoing description, can find out, in wireless communication procedure, sometimes need the coverage increasing power system capacity or expand system.At present, in order to increase the coverage of power system capacity or expansion system, can by one or more relay station (Relay Station, referred to as RS) be arranged on and support between the base station of multi-hop relay and terminal, relay station may be used for the signal of relay base station to terminal (down direction) or terminal to base station (up direction), wherein, the wireless communication system comprising relay station can be called relay system.
In relay system, terminal is called relay route by the communication path of relay station access base station, wherein, this relay station can be a jumping relay station, also can be multi-hop relay station, further, be called access relay station with the relay station that terminal is directly connected, the communication link between access relay station and terminal is called access link.In relay route, access relay station can be communicated with base station by other relay stations, and wherein, the liaison between relay station, the communication link between relay station and base station are all called repeated link.Relay station can be fixing, roaming, or movement.
After adopting relay station, effectively can improve the transmission quality of communications link signals, reach the object of expansion relays power system capacity or expansion relay system coverage, but correspondingly, mixing automatic repeat request (Hybrid Auto Repeat Request can be made, referred to as HARQ) design become complicated, ARQ (Auto Repeat Request) i.e. automatic repeat request.HARQ technology is a kind of link adaptation techniques, and forward error correction (ForwardError Correction Code, referred to as FEC) coding techniques and automatic repeat request technology combine by it.The operation principle of HARQ technology is: FEC coding techniques can improve the reliability of transmission, but when channel situation is better, because the quantity of correction bits is too much, can cause the reduction of throughput; ARQ technology can obtain desirable throughput when the error rate is not very high, but this technology can introduce time delay.Like this, FEC technology and ARQ technology is considered to combine, check bit all containing error correction and error detection in each packet that transmitting terminal sends to receiving terminal, if the faulty bit number in receiving package is within the error correcting capability of FEC technology, then mistake can be corrected voluntarily, if the faulty bit number in receiving package has exceeded the error correcting capability of FEC technology, then transmitting terminal has needed to retransmit this packet.Particularly, receiving terminal sends negative feedback (also referred to as error response message to transmitting terminal, NegativeAcknowledge, referred to as NACK or NAK), represent receiving terminal erroneous received data bag, transmitting terminal needs to retransmit this packet, receiving terminal sends positive feedback (also referred to as correct response message to transmitting terminal, Acknowledge, referred to as ACK), represent that receiving terminal proper reception of packet, transmitting terminal can send next packet, wherein, negative feedback and positive feedback are referred to as feedback.
When transmitting terminal carries out the re-transmission of packet, according to the moment of retransmission data packet may, HARQ technology can be divided into synchronous HARQ technology and asynchronous HARQ techniques.Wherein, synchronous HARQ technology is: retransmit and occur on the fixed resource of fixed intervals frame, this re-transmission does not need extra signaling consumption; Asynchronous HARQ techniques is: retransmit and can occur on any cost of arbitrary frame, this re-transmission needs extra signaling consumption, and compared to synchronous HARQ technology, the retransmission mechanism of asynchronous HARQ techniques is more flexible, and efficiency is also higher.
In addition, in relay system, scheduling of resource can be divided into centralized scheduling and distributed scheduling.In centralized scheduling mode, channel resource allocation must by the base station of multi-hop relay (Multi-hop Relay Base Station, referred to as MR-BS) complete, in distributed scheduling mode, relay station (Relay Station, referred to as RS) can distribution portion channel resource voluntarily.Like this, because all scheduling of resource of the relay system adopting centralized scheduling all need MR-BS to process, correspondingly, its HARQ designs can be more complicated.
In relay system, the HARQ scene of centralized scheduling and distributed scheduling has eight kinds of combinations, as shown in table 1, scene 6 is for will under HARQ is applied in synchronous Concentrated Control formula end to end, this scene 6 times, base station does not know which mistake can occur in and jump, and cannot arrange retransmission resource.If which is by the time reflected in jump negative feedback and pass to base station and arrange again, lose again the meaning of synchronous HARQ.In addition, under distributed scheduling scheme, trunking scheme is that often jumping feedback is comparatively suitable, because control station can Timeliness coverage error of transmission like this, feed back end to end without the need to waiting for, re-transmission can get started, based on this, the scene 1 in table 1 and scene 2 can be removed.
Table 1 comprises the HARQ scene composition of relaying
According to above-mentioned analysis, table 1 is as shown in table 2 after removing scene 1, scene 2 and scene 6.
Table 2 comprises the HARQ scene of relaying
As seen from Table 2, after removing scene 1, scene 2 and scene 6, the scene of remaining five kinds of relaying HARQ.Further, no matter be the scene only having synchronous HARQ relaying, or the scene of HARQ relaying that synchronous and asynchronous coexists, comprise synchronous relaying HARQ and often jump feedback.
In current technology, the synchronous HARQ processing procedure comprising relaying is not described.
Summary of the invention
Consider the problem be not described the processing procedure of synchronous HARQ relaying that exists in correlation technique and propose the present invention, for this reason, main purpose of the present invention is to provide the descending of a kind of synchrodata and uplink scheme, to solve the problem.
According to an aspect of the present invention, provide a kind of downlink transmission method of synchrodata, the method is applied to the wireless communication system comprising relay station.
Downlink transmission method according to synchrodata of the present invention comprises: reference relay station receives the first resource assignment messages from first node, and receives the downlink data of first node transmission according to first resource assignment messages; If reference relay station garbled-reception downlink data, then send negative feedback to first node, on the first predetermined resource, again send downlink data to reference relay station to make first node; If the correct downlink data receiving of reference relay station, then send Secondary resource assignment messages and downlink data to Section Point.
Wherein, first resource assignment messages carries one of following: first node sends resource information that downlink data uses, first node sends resource information that downlink data uses and reference relay station sends the resource information fed back and use; Secondary resource assignment messages carries one of following: reference relay station sends resource information that downlink data uses, reference relay station sends resource information that downlink data uses and Section Point sends the resource information fed back and use.
Wherein, the downlink data sent according to first resource assignment messages reception first node comprises: the downlink data sending the asset information receipt first node transmission that downlink data uses according to the first node carried in first resource assignment messages.
Preferably, after sending Secondary resource assignment messages and downlink data to Section Point, method also comprises: Section Point sends the downlink data of the asset information receipt reference relay station transmission that downlink data uses according to the reference relay station of carrying in Secondary resource assignment messages.
Preferably, if first resource assignment messages is not carried reference relay station and is sent the resource information fed back and use, then before reference relay station sends feedback, method also comprises: according to the first presupposed information, reference relay station determines that it sends the resource information fed back and use; If Secondary resource assignment messages is not carried Section Point and sent the resource information fed back and use, then, before Section Point sends feedback, method also comprises: according to the second presupposed information, Section Point determines that it sends the resource information fed back and use.
Wherein, the first presupposed information comprises one of following: very first time value, first frequency value and the first datum mark preset; First datum mark comprises one of following: first node sends resource information that first resource assignment messages uses, first node sends the resource information that downlink data uses; Wherein, very first time value and first frequency value are the fixed value pre-set, or, indicate interim very first time value and first frequency value by control message; Second presupposed information comprises one of following: the second time value, second frequency value and the second datum mark preset; Second datum mark comprises one of following: reference relay station sends resource that Secondary resource assignment messages uses, reference relay station sends the resource information that downlink data uses; Wherein, the second time value and second frequency value are the fixed value pre-set, or, indicate the second time value and second frequency value by control message temporarily.
Wherein, also carry the mark of synchronous HARQ pattern in first resource assignment messages and/or Secondary resource assignment messages, being used to indicate this data transfer is synchronous HARQ pattern.
Preferably, before first node resends downlink data, method also comprises: first node determines the first predetermined resource according to the first reference information preset.
Wherein, the first reference information preset comprises: the first reference time value, the first reference frequency value and the first reference point preset; First reference point comprises one of following: first node sends resource that first resource assignment messages uses, first node sends the resource that downlink data uses; Wherein, the first reference time value and the first reference frequency value are the fixed value pre-set, or, indicate the first reference time value and the first reference frequency value by control message temporarily.
Preferably, after first node resends downlink data, method also comprises: according to the 3rd information preset, reference relay station determines that it sends the resource of retransmission feedback.
Wherein, preset the 3rd information to comprise: the 3rd time value, the 3rd frequency values and the 3rd datum mark preset; 3rd datum mark comprises one of following: the resource that first node sends the resource of first resource assignment messages, first node sends downlink data, reference relay station send the resource information, the predetermined resource that feed back and use; Wherein, the 3rd time value and the 3rd frequency values are the fixed value pre-set, or, indicate the 3rd time value and the 3rd frequency values by control message temporarily; Reference relay station sends retransmission feedback in the resource sending retransmission feedback.
Wherein, first node comprises one of following: base station, relay station except reference relay station; Section Point comprises one of following: the relay station except reference relay station, terminal.
Preferably, if first node is the relay station of base station or distributed scheduling, if the then correct downlink data receiving of reference relay station, method also comprises: reference relay station sends positive feedback information to first node; First node distributes to reference relay station and sends new resource allocation message, and sends downlink data corresponding to new resource allocation message.
Preferably, if first node is the relay station of centralized scheduling, if then after the correct downlink data receiving of reference relay station, method also comprises: reference relay station sends positive feedback information or bandwidth request message to first node; First node directly sends or is sent by other relay station relays the positive feedback information after bandwidth request message or coding to base station, the resource allocation message that please look for novelty.
Preferably, if reference relay station is the relay station of distributed scheduling, then, after reference relay station sends downlink data, method also comprises: the correct downlink data receiving of Section Point, and sends positive feedback information to reference relay station; Reference relay station is that Section Point distributes and sends new resource allocation message, and sends downlink data corresponding to new resource allocation message.
Wherein, if reference relay station is the relay station of centralized scheduling, and the correct downlink data receiving of Section Point, then after reference relay station sends downlink data, method also comprises: the correct downlink data receiving of Section Point, and sends positive feedback information to reference relay station; Reference relay station directly sends or is sent by other relay station relays the positive feedback information after bandwidth request message or coding to base station, the resource allocation message that please look for novelty; Wherein, carry the mark of synchronous HARQ pattern in bandwidth request message, being used to indicate this data transfer is synchronous HARQ pattern.
Preferably, if reference relay station is the relay station of distributed scheduling or the relay station of centralized scheduling, then after reference relay station sends downlink data, method also comprises: Section Point garbled-reception downlink data, and sends negative-feedback information to reference relay station; Reference relay station repeats to send downlink data to Section Point in the second predetermined resource information, wherein, repeats to send downlink data and refers to: repeat to send the part or all of of downlink data.
Preferably, before reference relay station repeats to send downlink data, method also comprises: reference relay station determines the second predetermined resource according to the second reference information preset.
Wherein, the second reference information preset comprises: the second reference time value, the second reference frequency value and the second reference point preset; Second reference point comprises one of following: reference relay station sends resource that Secondary resource assignment messages uses, reference relay station sends the resource that downlink data uses; Wherein, the second reference time value and the second reference frequency value are the fixed value pre-set, or, indicate the second reference time value and the second reference frequency value by control message temporarily.
Preferably, reference relay station repeats to send after downlink data to Section Point, and method also comprises: Section Point determines the resource of its transmission retransmission feedback according to the 4th information preset.
Wherein, the 4th information comprises: the 4th time value, the 4th frequency values and the 4th datum mark; 4th datum mark comprises one of following: the resource that reference relay station sends the resource of Secondary resource assignment messages, reference relay station sends downlink data, Section Point send feed back use resource information, preset resource; Wherein, the 4th time value and the 4th frequency values are the fixed value pre-set, or, indicate the 4th time value and the 4th frequency values by control message temporarily; Section Point sends retransmission feedback to reference relay station.
According to an aspect of the present invention, provide a kind of ascending transmission method of synchrodata, this is applied to the wireless communication system comprising relay station.
Ascending transmission method according to synchrodata of the present invention comprises: reference relay station sends first resource assignment messages to first node, and receives the upstream data that first node sends according to the first Resources allocation information; If reference relay station garbled-reception upstream data, then send negative feedback to first node, on the first predetermined resource, resend upstream data to reference relay station to make first node; If reference relay station correctly receives upstream data, then reference relay station sends upstream data to Section Point.
Preferably, method also comprises: if reference relay station correctly receives upstream data, then send positive feedback to first node.
Preferably, before reference relay station sends upstream data to Section Point, method also comprises: reference relay station sends bandwidth request to Section Point, in response to bandwidth request, Section Point sends Secondary resource assignment messages to reference relay station, wherein, Secondary resource assignment messages is at least used to indicate the resource that reference relay station transmission upstream data uses.
Wherein, first resource assignment messages comprises one of following: first node sends resource information that upstream data uses, first node sends resource information that upstream data uses and first node receives the resource information fed back and use; Secondary resource assignment messages comprises one of following: the resource information that reference relay station sends resource information that upstream data uses, reference relay station sends upstream data and reference relay station receive the resource information fed back and use.
Wherein, if first resource assignment messages does not carry first node receive the resource information fed back and use, then, before first node receives feedback, method also comprises: according to the first presupposed information, first node determines that it receives the resource information fed back and use; If Secondary resource assignment messages is not carried reference relay station and received the resource information fed back and use, then, before reference relay station sends feedback, method also comprises: according to the second presupposed information, reference relay station determines that it receives the resource information fed back and use.
Wherein, the first presupposed information comprises: very first time value, first frequency value and the first datum mark preset; First datum mark comprises one of following: the resource that first node receives the resource of first resource assignment messages, first node sends upstream data; Wherein, very first time value and first frequency value are the fixed value pre-set, or, indicate very first time value and first frequency value by control message temporarily; Second presupposed information comprises: the second time value, second frequency value and the second datum mark preset; Second datum mark comprises one of following: the resource that reference relay station receives the resource of Secondary resource assignment messages, reference relay station sends upstream data; Wherein, the second time value and second frequency value are the fixed value pre-set, or, indicate the second time value and second frequency value by control message temporarily.
Preferably, before first node resends upstream data, method also comprises: first node determines the first predetermined resource according to the first reference information preset.
Wherein, the first reference information preset comprises: the first reference time value, the first reference frequency value and the first reference point preset; First reference point comprises one of following: the resource that first node receives the resource of first resource assignment messages, first node sends upstream data; Wherein, the first reference time value and the first reference frequency value are the fixed value pre-set, or, indicate the first reference time value and the first reference frequency value by control message temporarily.
Preferably, first node is after resending upstream data to reference relay station, and method also comprises: according to the 3rd information preset, reference relay station determines that it sends the resource of retransmission feedback.
Wherein, preset the 3rd information to comprise: the 3rd time value, the 3rd frequency values and the 3rd datum mark preset; 3rd datum mark comprises one of following: the resource that first node receives the resource of first resource assignment messages, first node sends upstream data, reference relay station send the resource information, the predetermined resource that feed back and use; Wherein, the 3rd time value and the 3rd frequency values are the fixed value pre-set, or, indicate the 3rd time value and the 3rd frequency values by control message temporarily; Reference relay station sends retransmission feedback in the resource sending retransmission feedback.
Preferably, if reference relay station is distributed scheduling relay station, before reference relay station sends first resource assignment messages to first node, method also comprises: first node sends the first bandwidth request to reference relay station, and request first node sends the resource that upstream data uses; Reference relay station, according to the first bandwidth request, is first node distribution first resource assignment messages.
Preferably, if reference relay station is centralized scheduling relay station, before reference relay station sends first resource assignment messages to first node, method also comprises: first node sends the first bandwidth request to reference relay station, and request first node sends the resource that upstream data uses; Reference relay station sends the first bandwidth request message directly to base station, and first resource assignment messages is sent to reference relay station by base station; Or reference relay station, by other relay station relays, sends the first bandwidth request message to base station, first resource assignment messages, by other relay station relays, is sent to reference relay station by base station.
Wherein, first node comprises one of following: the relay station except reference relay station, terminal; Section Point comprises one of following: base station, relay station except reference relay station.
Wherein, if Section Point is the relay station of base station or distributed scheduling, comprise in response to bandwidth request: Section Point, according to bandwidth request, is reference relay station distribution Secondary resource assignment messages.
Preferably, if Section Point is the relay station of centralized scheduling, comprise in response to bandwidth request: Section Point sends bandwidth request message directly to base station; Secondary resource assignment messages, according to bandwidth request message, is distributed and sends to Section Point by base station; Secondary resource assignment messages is sent to reference relay station by Section Point; Or Section Point, by other relay station relays, sends bandwidth request message to base station; Secondary resource assignment messages, according to the second bandwidth request message, is distributed in base station, and by other relay station relays, Secondary resource assignment messages is sent to Section Point; Secondary resource assignment messages is sent to reference relay station by Section Point.
Preferably, if reference relay station is the relay station of distributed scheduling or the relay station of centralized scheduling, then, after reference relay station sends upstream data, method also comprises: if Section Point garbled-reception upstream data; Section Point sends negative-feedback information to reference relay station; Reference relay station repeats to send upstream data to Section Point in the second predetermined resource information, wherein, repeats to send upstream data and refers to: repeat to send the part or all of of upstream data.
Wherein, if Section Point correctly receives upstream data, Section Point sends positive feedback information to reference relay station.
Preferably, before reference relay station repeats to send upstream data, method also comprises: reference relay station determines the second predetermined resource according to the second reference information preset.
Wherein, the second reference information preset comprises: the second reference time value, the second reference frequency value and the second reference point preset; Wherein, the second reference point comprises one of following: the resource that reference relay station receives the resource of first resource assignment messages, reference relay station sends upstream data; Wherein, the second reference time value and the second reference frequency value are the fixed value pre-set, or, indicate the second reference time value and the second reference frequency value by control message temporarily.
Preferably, reference relay station repeats to send after upstream data to Section Point, and method also comprises: Section Point determines the resource of its transmission retransmission feedback according to the 4th information preset.
Wherein, the 4th information comprises: the 4th time value, the 4th frequency values and the 4th datum mark; Wherein, the 4th datum mark comprises one of following: the resource that reference relay station receives the resource of Secondary resource assignment messages, reference relay station sends upstream data, Section Point send feed back use resource information, preset resource; Wherein, the 4th time value and the 4th frequency values are the fixed value pre-set, or, indicate the 4th time value and the 4th frequency values by control message temporarily; Section Point sends retransmission feedback to reference relay station in the resource sending retransmission feedback.
By at least one technical scheme above-mentioned of the present invention, the synchronous HARQ processing procedure comprising relaying is described, compensate for the blank of prior art.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the topological structure according to the embodiment of the present invention;
Fig. 2 is the flow chart of the processing method of synchrodata according to the inventive method embodiment one;
Fig. 3 is the flow chart of the example 1 of method according to Fig. 2;
Fig. 4 is the flow chart of the example 2 of method according to Fig. 2;
Fig. 5 is the flow chart of the example 3 of method according to Fig. 2;
Fig. 6 is the flow chart of the processing method of synchrodata according to the inventive method embodiment two;
Fig. 7 is the flow chart of the example 4 of method according to Fig. 6;
Fig. 8 is the flow chart of the example 5 of method according to Fig. 6;
Fig. 9 is the flow chart of the example 6 of method according to Fig. 6;
Figure 10 is the flow chart of the example 7 of method according to Fig. 6;
Figure 11 is the flow chart of the example 8 of method according to Fig. 6.
Embodiment
Functional overview
For the ease of understanding the embodiment of the present invention, before the explanation embodiment of the present invention, first 1 be described realizing network frame of the present invention by reference to the accompanying drawings, as shown in Figure 1, this network frame comprises base station, relay station, terminal, and this terminal can be mobile terminal, also can be fixed terminal, relay station can be the relay station of distributed scheduling, also can be the relay station of centralized scheduling.Wherein, the interacting message between terminal and base station, carries out relaying by relay station.
When not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiment of the method one
According to the embodiment of the present invention, provide a kind of downlink transmission method of synchrodata.
Fig. 2 is the flow chart of the downlink transmission method of synchrodata according to the embodiment of the present invention, the method is applied to the wireless communication system comprising relay station, it should be noted that, for convenience of description, illustrate and describe the technical scheme of embodiment of the method for the present invention in fig. 2 with the form of step, step shown in fig. 2 can perform in the computer system of such as one group of computer executable instructions.Although figure 2 illustrates logical order, in some cases, can be different from the step shown or described by order execution herein.As shown in Figure 2, the method comprises the following steps (step S202 is to step S206).
Step S202, reference relay station receives the first resource assignment messages from first node, and receives the downlink data of first node transmission according to first resource assignment messages;
Step S204, if reference relay station garbled-reception downlink data, then send negative feedback (NACK) to first node, on the first predetermined resource, again downlink data is sent to reference relay station to make first node, wherein, again send downlink data to reference relay station to refer to: again send the part or all of of this downlink data to reference relay station.
Step S206, if the correct downlink data receiving of reference relay station, then sends Secondary resource assignment messages and downlink data to Section Point.
Below above steps is described in detail.
(1) step S202
In specific implementation process, first node can send first resource assignment messages to reference relay station, wherein, this first resource assignment messages carries one of following: first node sends the resource information that downlink data uses, the resource information that first node transmission downlink data uses and reference relay station send the resource information fed back and use, wherein, first node sends in the resource information that uses of downlink data at first node and sends downlink data to reference relay station, if reference relay station correctly receives this downlink data, then reference relay station sends to feed back in the resource information that uses in reference relay station and sends positive feedback (ACK) to first node, first node receives this positive feedback (ACK) in this resource information, if this downlink data of reference relay station garbled-reception, then reference relay station sends to feed back in the resource information that uses in reference relay station and sends negative feedback (NACK) to first node, first node receives this negative feedback (NACK) in this resource information, Secondary resource assignment messages carries one of following: reference relay station sends the resource information that downlink data uses, the resource information that reference relay station transmission downlink data uses and Section Point send the resource information fed back and use, wherein, the resource information that reference relay station uses at reference relay station transmission downlink data sends downlink data to Section Point, if Section Point correctly receives this downlink data, then send at this Section Point in the resource information fed back and use and send positive feedback (ACK) to reference relay station, reference relay station receives this positive feedback (ACK) in this resource information, if this downlink data of Section Point garbled-reception, then send at Section Point in the resource information fed back and use and send negative feedback (NACK) to reference relay station, reference relay station receives this negative feedback (NACK) in this resource information.
If first resource assignment messages is not carried reference relay station and is sent the resource information fed back and use, then according to the first presupposed information, reference relay station can be determined that it sends and feeds back the resource information that uses, and this first presupposed information comprises one of following: very first time value, first frequency value and the first datum mark preset; Wherein, the first datum mark comprises one of following: first node sends resource information that first resource assignment messages uses, first node sends the resource information that downlink data uses; Very first time value and first frequency value are the fixed value pre-set, or, indicate interim very first time value and first frequency value by control message.Namely, this first presupposed information can be stored in advance in all nodes (now, very first time value and first frequency value are fixed value), also can eat dishes without rice or wine by using control message to propagate (now, very first time value and first frequency value are variable value) temporarily.
Such as, can arrange very first time t and first frequency n, and use any one datum mark (t1, n1), (t1+t, the n1+n) that obtain after adding predetermined time deviation t and frequency departure n is as sending the resource information fed back and use.Also can be calculated according to the first presupposed information by other mathematical formulaes, obtain sending the resource information fed back and use.
If Secondary resource assignment messages is not carried Section Point and sent the resource information fed back and use, then according to the second presupposed information, Section Point can determine that it sends the resource information fed back and use.Second presupposed information comprises one of following: the second time value, second frequency value and the second datum mark preset; Second datum mark comprises one of following: reference relay station sends resource that Secondary resource assignment messages uses, reference relay station sends the resource information that downlink data uses; Wherein, the second time value and second frequency value are the fixed value pre-set, or, indicate the second time value and second frequency value by control message temporarily.Wherein, the processing procedure of this second presupposed information and the processing procedure of the first presupposed information similar, repeat no more here.
In addition, also carry the mark of synchronous HARQ pattern in above-mentioned first resource assignment messages and/or Secondary resource assignment messages, being used to indicate this data transfer is synchronous HARQ pattern.
Reference relay station can send the downlink data of the asset information receipt first node transmission that downlink data uses according to the first node carried in first resource assignment messages.
(2) step S204
Before first node resends downlink data, first node can determine the first predetermined resource according to the first reference information preset.The first reference information preset comprises: the first reference time value, the first reference frequency value and the first reference point preset; First reference point comprises one of following: first node sends resource that first resource assignment messages uses, first node sends the resource that downlink data uses; Wherein, the first reference time value and the first reference frequency value are the fixed value pre-set, or, indicate the first reference time value and the first reference frequency value by control message temporarily.Wherein, the processing procedure of this first reference information and the processing procedure of the first presupposed information similar, repeat no more here.
After first node resends downlink data, reference relay station can determine that according to the 3rd information preset it sends the resource of retransmission feedback, and wherein, the 3rd information of presetting comprises: the 3rd time value, the 3rd frequency values and the 3rd datum mark preset; Wherein, the 3rd datum mark comprises one of following: the resource that first node sends the resource of first resource assignment messages, first node sends downlink data, reference relay station send the resource information, the predetermined resource that feed back and use; 3rd time value and the 3rd frequency values are the fixed value pre-set, or, indicate the 3rd time value and the 3rd frequency values by control message temporarily, wherein, the processing procedure of the 3rd information and the processing procedure of the first presupposed information similar, repeat no more here.Afterwards, reference relay station sends retransmission feedback in the resource sending retransmission feedback.
(3) step S206
If the correct downlink data receiving of reference relay station, Secondary resource assignment messages and downlink data can be sent to Section Point, afterwards, Section Point sends the downlink data of the asset information receipt reference relay station transmission that downlink data uses according to the reference relay station of carrying in Secondary resource assignment messages.
Before reference relay station resends downlink data, reference relay station can determine the second predetermined resource according to the second reference information preset, wherein, the second reference information preset comprises: the second reference time value, the second reference frequency value and the second reference point preset; Second reference point comprises one of following: reference relay station sends resource that Secondary resource assignment messages uses, reference relay station sends the resource that downlink data uses; Wherein, the second reference time value and the second reference frequency value are the fixed value pre-set, or, indicate the second reference time value and the second reference frequency value by control message temporarily.Wherein, the processing procedure of this second reference information and the processing procedure of the first presupposed information similar, repeat no more here.
In reference relay station to after Section Point resends downlink data, according to the 4th information preset, Section Point determines that it sends the resource of retransmission feedback, wherein, the 4th information comprises: the 4th time value, the 4th frequency values and the 4th datum mark; 4th datum mark comprises one of following: the resource that reference relay station sends the resource of Secondary resource assignment messages, reference relay station sends downlink data, Section Point send feed back use resource information, preset resource; Wherein, the 4th time value and the 4th frequency values are the fixed value pre-set, or, indicate the 4th time value and the 4th frequency values by control message temporarily; Described Section Point sends described retransmission feedback to described reference relay station.Wherein, the processing procedure of the 4th information and the processing procedure of the first presupposed information similar, repeat no more here.
Wherein, first node comprises one of following: base station, relay station except reference relay station; Section Point comprises one of following: the relay station except reference relay station, terminal.
If first node is the relay station of base station or distributed scheduling, after the correct downlink data receiving of reference relay station, reference relay station sends positive feedback (ACK) information to first node; First node distributes to reference relay station and sends new resource allocation message, and sends downlink data corresponding to new resource allocation message.
If first node is the relay station of centralized scheduling, after the correct downlink data receiving of reference relay station, reference relay station sends positive feedback (ACK) information or bandwidth request message to first node; First node directly sends or is sent by other relay station relays positive feedback (ACK) information after bandwidth request message or coding to base station, the resource allocation message that please look for novelty.
If reference relay station is the relay station of distributed scheduling, after reference relay station sends downlink data, the correct downlink data receiving of Section Point, and send positive feedback (ACK) information to reference relay station; Reference relay station is that Section Point distributes and sends new resource allocation message, and sends downlink data corresponding to new resource allocation message.
If reference relay station is the relay station of centralized scheduling, and the correct downlink data receiving of Section Point, then after reference relay station sends downlink data, the correct downlink data receiving of Section Point, and send positive feedback (ACK) information to reference relay station; Reference relay station directly sends or is sent by other relay station relays positive feedback (ACK) information after bandwidth request message or coding to base station, the resource allocation message that please look for novelty; Wherein, carry the mark of synchronous HARQ pattern in bandwidth request message, being used to indicate this data transfer is synchronous HARQ pattern.
If reference relay station is the relay station of distributed scheduling or the relay station of centralized scheduling, then after reference relay station sends downlink data, Section Point garbled-reception downlink data, and send negative feedback (NACK) information to reference relay station, reference relay station repeats to send downlink data to Section Point in the second predetermined resource information, this repeats transmission and refers to: repeat to send the part or all of of first biography data, and, for the repeatedly re-transmission of same downlink data, the re-transmission of this downlink data can be carried out on identical predetermined resource, particularly, because the first of downlink data passes unsuccessfully, then can resend this downlink data on above-mentioned second predetermined resource, if the first time of this downlink data retransmits unsuccessfully, this downlink data can be again sent on this second predetermined resource, the like, until retransmit successfully, or number of retransmissions exceedes the threshold value pre-set.In addition, for different downlink datas, can retransmit on identical predetermined resource, also can retransmit on different predetermined resources.
By the technical scheme that the embodiment of the present invention provides, the synchronous HARQ processing procedure comprising relaying is described, compensate for the blank of prior art.
Be described in detail below in conjunction with example 1, example 2 and example 3 pairs of embodiment of the present invention.
Example 1: feedback HARQ process is often jumped in the descending of distributed scheduling
Fig. 3 is the detailed process figure of the example 1 of method according to Fig. 2, wherein, this example 1 is applied to the relay system of double bounce, data carry out transmitting and feeding back by the relaying of RS between the bs and ms, RS is the relay station of distributed scheduling, as shown in Figure 3, following process (step S301 is to step S312) is comprised.
Step S301 is to step S302, support the base station active schedule of multi-hop relay, for with its relay station Resources allocation assignment information be directly connected, wherein, the resource information that this resource allocation information can use for this relay station downlink data receiving is (in order to clear description, this resource information is called resource information 1), and the resource information that this relay station transmission feedback uses is (in order to clear description, this resource information is called resource information 2), and by message related to resources 1, resource information 2, and downlink data (Data 0) sends to relay station, particularly, resource information 1 and resource information 2 can be carried in Resourse Distribute bitmap (MAP) and send to relay station, in addition, this resource allocation information business also can comprise resource information 1, does not comprise resource information 2, and like this, resource allocation information 1 and Data 0 can be sent to this relay station by BS,
If relay station receives message related to resources 1, resource information 2 and Data 0, Data 0 can be received according to the moment of message related to resources 1 and/or content in the resource of specifying;
If relay station receives message related to resources 1 and Data 0, resource information 2 can be determined according to resource information 1, the processing procedure of concrete defining method and the first presupposed information is similar, here repeat no more, afterwards, Data 0 can be received according to the moment of message related to resources 1 and/or content in the resource of specifying;
Further, if relay station receives Data 0 failure, enter into step S303, if relay station receives Data 0 success, enter into step S305.
Step S303, if relay station receives described Data 0 failure, then according to message related to resources 2 to base station feedback negative feedback (NACK) information, and enter into step S304.
Step S304, base station receives negative feedback (NACK) information, the predetermined resource of synchronous mode resends Data 0 to relay station, wherein, determine to determine that the method for the first predetermined resource is similar in the Methods and steps S204 of this predetermined resource, repeat no more here.
In addition, if relay station receives Data 0 failure in predetermined number of retransmissions, base station abandons sending Data 0 to relay station, and enters into step S306.
Step S305, if relay station receives Data 0 success, then according to resource information 2 to base station feedback ACK information, base station receives ACK information, this relay station of meeting driving arrangement receives the resource allocation information that new downlink data uses, repeated execution of steps S301 to step S303, and enters into step S306.
Step S306 is to step S307, when relay station correctly receives Data 0, for with its terminal distribution resource allocation information be directly connected, wherein, the resource information that this resource allocation information can use for this terminal reception Data 0 is (in order to clear description, this resource information is called resource information 3), and the resource information that this relay station transmission feedback uses is (in order to clear description, this resource information is called resource information 4), and by message related to resources 3, resource information 4, and Data 0 sends to terminal, particularly, resource information 3 and resource information 4 can be carried in Resourse Distribute bitmap (MAP) and send to terminal, in addition, this resource allocation information business also can comprise resource information 3, does not comprise resource information 4, and like this, resource allocation information 3 and Data 0 can be sent to terminal by RS.
In above-mentioned steps S306, if terminal receive message related to resources 3, resource information 4, Data 0 can be received according to moment of message related to resources 3 and/or content in the resource specified;
If terminal receives message related to resources 3 and Data 0, resource information 4 can be determined according to resource information 3, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here, and terminal can receive Data 0 according to the moment of message related to resources 3 and/or content in the resource of specifying;
Further, if terminal receives Data 0 failure, enter into step S309, if terminal receives Data 0 success, enter into step S310.
Step S308, if terminal receives Data 0 failure, then feeds back negative feedback (NACK) information according to message related to resources 4 to RS, and enters into step S309.
Step S309, RS receive negative feedback (NACK) information, the predetermined resource of synchronous mode repeat send Data 0 to terminal, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S310, if terminal receive Data 0 success, then according to message related to resources 4 to RS feeding back ACK information; RS receives ACK information, and this terminal of meeting driving arrangement receives the resource allocation information that new downlink data uses, and repeated execution of steps S306 is to step S308.
Step S311 is to step S312, and base station is that relay station distributes new resource allocation information and new downlink data (Data 1), implementation procedure and step S301 similar to step S302, repeat no more here.
Alternatively, step S311 can be performed to step S312 before step S307 and S308.
In above-mentioned steps, when relay station receives terminal transmission ACK information, namely indicate that the often jumping feeding back downlink HARQ procedure of whole distributed scheduling terminates.
Wherein, above-mentioned terminal also can be the relay station of distributed scheduling.
Example 2: centralized scheduling is descending often jumps feedback HARQ.
Fig. 4 is the detailed process figure of the example 1 of method according to Fig. 2, wherein, this example 1 is applied to the relay system of double bounce, data carry out transmitting and feeding back by the relaying of RS between the bs and ms, RS is the relay station of centralized scheduling, as shown in Figure 4, following process (step S401 is to step S413) is comprised.
Step S401 is to step S402, and the implementation procedure of the step S301 to step S302 of this step and example 1 is similar, repeats no more here.
Step S403, if relay station receives described Data 0 failure, then according to message related to resources 2 to base station feedback negative feedback (NACK) information, and enter into step S404.
Step S404, base station receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to relay station, wherein, in the processing method of this predetermined resource and example 1, the processing method of step S304 is similar, repeats no more here.
In addition, if relay station receives Data 0 failure in predetermined number of retransmissions, base station abandons sending Data 0 to relay station, and enters into step S407.
Step S405, if relay station receives Data 0 success, then according to resource information 2 to base station feedback ACK information, simultaneously, resource bid request is sent to base station, this resource bid request sends the resource information that Data 0 uses and the resource information receiving respective feedback for asking this relay station to terminal, and enters into step S406; In addition, base station receives ACK information, and this relay station of meeting driving arrangement receives the resource allocation information that new downlink data uses, and repeated execution of steps S401 is to step S403.
Step S406, base station is according to resource bid request, for relay station distributes corresponding resource allocation information, wherein, this resource allocation information comprises: relay station sends the resource information that uses of Data (in order to clear description to terminal, this resource information is called resource information 5), and the resource information that this relay station reception feedback uses is (in order to clear description, this resource information is called resource information 6), and resource information 5 and resource information 6 are sent to relay station, particularly, resource information 5 and resource information 6 can be carried at Resourse Distribute bitmap (MAP) (in order to clear description, this Resourse Distribute bitmap is called MAP1) in send to relay station, in addition, this resource allocation information business also can comprise resource information 5, does not comprise resource information 6, and like this, resource allocation information 5 can be sent to this relay station by BS, and enters into step S409.
Step S407 is to step S408, and base station is that relay station distributes new resource allocation information and new downlink data (Data 1), implementation procedure and step S401 similar to step S402, repeat no more here.
Step S409, relay station parses the resource information 5 and resource information 6 of carrying in MAP1, resource information 5 and resource information 6 are carried Resourse Distribute bitmap (MAP) (in order to clear description, this Resourse Distribute bitmap being called MAP2) and send to terminal;
Or,
Relay station parses the resource information 5 of carrying in MAP1, determines resource information 6 according to resource information 5, and the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here; And resource information 5 and resource information 6 are carried Resourse Distribute bitmap (MAP) (in order to clear description, this Resourse Distribute bitmap being called MAP2) and send to terminal;
Step S410, relay station sends Data 0 according to resource information 5 to terminal, and terminal receives Data 0 in corresponding resource;
Further, if terminal receives Data 0 failure, enter into step S411, if relay station receives Data 0 success, enter into step S413.
Step S411, if terminal receives described Data 0 failure, then according to message related to resources 6 to base station feedback negative feedback (NACK) information, and enter into step S412.
Step S412, relay station receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to relay station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S413, if terminal receive Data 0 success, then according to resource information 6 to base station feedback ACK information; Relay station receives ACK information, and repeated execution of steps S405 is to step S406 in meeting, and step S409 is to step S410.
The downlink data that relay station receives terminal transmission successfully receives feedback, indicates that whole centralized scheduling is often jumped feedback HARQ and terminated.
Wherein, above-mentioned terminal can be changed to the relay station of centralized scheduling, when the relay station for centralized scheduling, during the correct downlink data receiving of relay station, is sent request to base station by relay station, please downlink data and receive the resource bid of respective feedback.Base station respective resources application, corresponding resource allocation message is sent to the relay station being sent to centralized scheduling by relaying, relay station receives resource allocation message, the HARQ procedure of the relay station of repeat station and centralized scheduling.
Example 3
Fig. 5 is the detailed process figure of the example 1 of method according to Fig. 2, wherein, this example 1 is applied to the relay system of double bounce, data carry out transmitting and feeding back by the relaying of RS between the bs and ms, RS is the relay station of centralized scheduling, as shown in Figure 5, following process (step S501 is to step S513) is comprised.
Step S501 is to step S502, and the implementation procedure of the step S301 to step S302 of this step and example 1 is similar, repeats no more here.
Step S503, if relay station receives described Data 0 failure, then according to message related to resources 2 to base station feedback negative feedback (NACK) information, and enter into step S504.
Step S504 to 505, base station receives negative feedback (NACK) information, for relay station distributes corresponding resource allocation information, wherein, this resource allocation information comprises: base station repeats to send the resource information that uses of Data 0 (in order to clear description to relay station, this resource information is called resource information 5), and the resource information that this relay station transmission feedback uses is (in order to clear description, this resource information is called resource information 6), and resource information 5 and resource information 6 are sent to relay station, particularly, resource information 5 and resource information 6 can be carried at Resourse Distribute bitmap (MAP) (in order to clear description, this Resourse Distribute bitmap is called MAP1) in send to relay station, in addition, this resource allocation information business also can comprise resource information 5, does not comprise resource information 6, and like this, resource allocation information 5 can be sent to this relay station by BS, and repeats to send Data0 to relay station according to resource information 5,
In addition, if relay station receives Data 0 failure in predetermined number of retransmissions, base station abandons sending Data 0 to relay station, and enters into step S507.
Step S506, if relay station receives Data 0 success, then according to resource information 2 to base station feedback ACK information, base station receives ACK information, this relay station of meeting driving arrangement receives the resource allocation information that new downlink data uses, repeated execution of steps S501 to step S503, and enters into step S509.
Step S507 is to step S508, and base station is that relay station distributes new resource allocation information and new downlink data (Data 1), implementation procedure and step S501 similar to step S502, repeat no more here.
Step S509, when relay station correctly receives Data 0, for with its terminal distribution resource allocation information be directly connected, wherein, the resource information that this resource allocation information can use for this terminal reception Data0 is (in order to clear description, this resource information is called resource information 3), and the resource information that this relay station transmission feedback uses is (in order to clear description, this resource information is called resource information 4), and by message related to resources 3, resource information 4, and Data 0 sends to terminal, particularly, resource information 3 and resource information 4 can be carried in Resourse Distribute bitmap (MAP) and send to terminal, in addition, this resource allocation information business also can comprise resource information 3, does not comprise resource information 4, and like this, resource allocation information 3 and Data 0 can be sent to terminal by RS, and enter into step S510.
Step S510, relay station parses the resource information 3 and resource information 4 of carrying in MAP1, resource information 3 and resource information 4 is carried Resourse Distribute bitmap (MAP) and sends to terminal;
Or,
Relay station parses the resource information 5 of carrying in MAP 1, determines resource information 6 according to resource information 5, and the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here; And resource information 5 and resource information 6 are carried Resourse Distribute bitmap (MAP) send to terminal.
Step S511, relay station sends Data 0 according to resource information 5 to terminal, and terminal receives Data 0 in corresponding resource;
Further, if terminal receives Data 0 failure, enter into step S511, if relay station receives Data 0 success, enter into step S513.
Step S511, if terminal receives described Data 0 failure, then according to message related to resources 6 to base station feedback negative feedback (NACK) information, and enter into step S512.
Step S512, relay station receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to relay station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S513, if terminal receive Data 0 success, then according to resource information 6 to base station feedback ACK information.
Wherein, the difference of example 3 and example 2 is: the repeated link of example 2 have employed synchronous HARQ, and the repeated link of example 3 have employed asynchronous HARQ, therefore, when base station sends downlink data to relay station at every turn, all must specify the message related to resources that relay station downlink data receiving uses.
Embodiment of the method two
According to the embodiment of the present invention, provide a kind of ascending transmission method of synchrodata.
Fig. 6 is the flow chart of the ascending transmission method of synchrodata according to the embodiment of the present invention, the method is applied to the wireless communication system comprising relay station, it should be noted that, for convenience of description, illustrate and describe the technical scheme of embodiment of the method for the present invention in figure 6 with the form of step, step shown in figure 6 can perform in the computer system of such as one group of computer executable instructions.Although figure 6 illustrates logical order, in some cases, can be different from the step shown or described by order execution herein.As shown in Figure 6, the method comprises the following steps (step S602 is to step S606).
Step S602, reference relay station sends first resource assignment messages to first node, and receives the upstream data that first node sends according to the first Resources allocation information.
Step S604, if reference relay station garbled-reception upstream data, then send feedback to first node, on the first predetermined resource, upstream data is resend to reference relay station to make first node, wherein, resend upstream data to reference relay station to refer to: resend the part or all of of this upstream data to reference relay station.
Step S606, if reference relay station correctly receives described upstream data, then sends positive feedback to described first node; If reference relay station correctly receives upstream data, then reference relay station sends upstream data to Section Point, and, before reference relay station sends upstream data to Section Point, reference relay station can send bandwidth request to Section Point, and in response to bandwidth request, Section Point sends Secondary resource assignment messages to reference relay station, wherein, Secondary resource assignment messages is at least used to indicate the resource that reference relay station transmission upstream data uses.
Below above steps is described in detail.
(1) step S602
Wherein, first resource assignment messages comprises one of following: first node sends the resource information that upstream data uses, the resource information that first node transmission upstream data uses and first node receive the resource information fed back and use, wherein, first node sends in the resource information that uses of upstream data at first node and sends upstream data to reference relay station, if reference relay station correctly receives this upstream data, then reference relay station receives to feed back in the resource information that uses at this first node and sends positive feedback (ACK) to first node, first node receives this positive feedback (ACK) in this resource information, if this upstream data of reference relay station garbled-reception, then reference relay station receives to feed back in the resource information that uses at this first node and sends negative feedback (NACK) to first node, and first node receives this negative feedback (NACK) in this resource information, Secondary resource assignment messages comprises one of following: reference relay station sends the resource information that upstream data uses, resource information and the reference relay station of reference relay station transmission upstream data receive the resource information fed back and use, wherein, the resource information that reference relay station transmission upstream data uses sends upstream data to Section Point, if Section Point correctly receives this upstream data, then Section Point receives to feed back in the resource information that uses in this reference relay station and sends positive feedback (ACK) to reference relay station, reference relay station receives this positive feedback (ACK) in this resource information, if this upstream data of Section Point garbled-reception, then Section Point receives to feed back in the resource information that uses in this reference relay station and sends negative feedback (NACK) to reference relay station, and reference relay station receives this negative feedback (NACK) in this resource information.
If first resource assignment messages is not carried first node and received the resource information fed back and use, then before first node receives feedback, according to the first presupposed information, first node can determine that it receives the resource information fed back and use.Wherein, the first presupposed information comprises: very first time value, first frequency value and the first datum mark preset; First datum mark comprises one of following: the resource that first node receives the resource of first resource assignment messages, first node sends upstream data; Very first time value and first frequency value are the fixed value pre-set, or, indicate very first time value and first frequency value by control message temporarily.
If Secondary resource assignment messages is not carried reference relay station and received the resource information fed back and use, then before reference relay station sends feedback, according to the second presupposed information, reference relay station can determine that it receives the resource information fed back and use.Second presupposed information comprises: the second time value, second frequency value and the second datum mark preset; Second datum mark comprises one of following: the resource that reference relay station receives the resource of Secondary resource assignment messages, reference relay station sends upstream data; Wherein, the second time value and second frequency value are the fixed value pre-set, or, indicate the second time value and second frequency value by control message temporarily.
(2) step S604
Before first node resends upstream data, first node can determine the first predetermined resource according to the first reference information preset, and the first default reference information comprises: the first reference time value, the first reference frequency value and the first reference point preset; First reference point comprises one of following: the resource that first node receives the resource of first resource assignment messages, first node sends upstream data; Wherein, the first reference time value and the first reference frequency value are the fixed value pre-set, or, indicate the first reference time value and the first reference frequency value by control message temporarily.
First node is after resending upstream data to reference relay station, and reference relay station can determine that according to the 3rd information preset it sends the resource of retransmission feedback.3rd information of presetting comprises: the 3rd time value, the 3rd frequency values and the 3rd datum mark preset; Wherein, the 3rd datum mark comprises one of following: the resource that first node receives the resource of first resource assignment messages, first node sends upstream data, reference relay station send the resource information, the predetermined resource that feed back and use; 3rd time value and the 3rd frequency values are the fixed value pre-set, or indicate the 3rd time value and the 3rd frequency values by control message, afterwards, reference relay station sends retransmission feedback in the resource sending retransmission feedback temporarily.
(3) step S606
In reference relay station to before Section Point upstream data, reference relay station sends bandwidth request to Section Point, in response to this bandwidth request, Section Point sends Secondary resource assignment messages to reference relay station, and wherein, Secondary resource assignment messages is at least used to indicate the resource that reference relay station transmission upstream data uses, particularly, if Section Point is the relay station of base station or distributed scheduling, Section Point, according to bandwidth request, is reference relay station distribution Secondary resource assignment messages.If Section Point is the relay station of centralized scheduling, Section Point sends bandwidth request message directly to base station; Secondary resource assignment messages, according to bandwidth request message, is distributed and sends to Section Point by base station; Secondary resource assignment messages is sent to reference relay station by Section Point; Or Section Point, by other relay station relays, sends bandwidth request message to base station; Secondary resource assignment messages, according to the second bandwidth request message, is distributed in base station, and by other relay station relays, Secondary resource assignment messages is sent to Section Point; Secondary resource assignment messages is sent to reference relay station by Section Point.
If reference relay station is distributed scheduling relay station, before reference relay station sends first resource assignment messages to first node, first node can send the first bandwidth request to reference relay station, and request first node sends the resource that upstream data uses; Reference relay station, according to the first bandwidth request, is first node distribution first resource assignment messages.
If reference relay station is centralized scheduling relay station, before reference relay station sends first resource assignment messages to first node, first node can send the first bandwidth request to reference relay station, and request first node sends the resource that upstream data uses; Reference relay station sends the first bandwidth request message directly to base station, and first resource assignment messages is sent to reference relay station by base station; Or reference relay station, by other relay station relays, sends the first bandwidth request message to base station, first resource assignment messages, by other relay station relays, is sent to reference relay station by base station.
Wherein, first node comprises one of following: the relay station except reference relay station, terminal; Section Point comprises one of following: base station, relay station except reference relay station.
If reference relay station is the relay station of distributed scheduling or the relay station of centralized scheduling, then after reference relay station sends upstream data, if upstream data described in Section Point garbled-reception, Section Point sends positive feedback information to described reference relay station, if Section Point garbled-reception upstream data, Section Point sends negative feedback (NACK) information to reference relay station, reference relay station repeats to send upstream data to Section Point in the second predetermined resource information, this repeats transmission and refers to: repeat to send the part or all of of first biography data, and, for the repeatedly re-transmission of same upstream data, the re-transmission of this upstream data can be carried out on identical predetermined resource, particularly, because the first of upstream data passes unsuccessfully, this upstream data can be resend on above-mentioned second predetermined resource, if the first time of this upstream data retransmits unsuccessfully, then can again send this upstream data on this second predetermined resource, the like, until retransmit successfully, or number of retransmissions exceedes the threshold value pre-set.In addition, for different upstream datas, can retransmit on identical predetermined resource, also can retransmit on different predetermined resources.
And, before reference relay station resends upstream data, reference relay station determines the second predetermined resource according to the second reference information preset, and wherein, the second reference information preset comprises: the second reference time value, the second reference frequency value and the second reference point preset; Second reference point comprises one of following: the resource that reference relay station receives the resource of first resource assignment messages, reference relay station sends upstream data; Wherein, the second reference time value and the second reference frequency value are the fixed value pre-set, or, indicate the second reference time value and the second reference frequency value by control message temporarily.
Reference relay station is to after Section Point resends upstream data, according to the 4th information preset, Section Point determines that it sends the resource of retransmission feedback.Wherein, the 4th information comprises: the 4th time value, the 4th frequency values and the 4th datum mark; 4th datum mark comprises one of following: the resource that reference relay station receives the resource of Secondary resource assignment messages, reference relay station sends upstream data, Section Point send feed back use resource information, preset resource; Wherein, the 4th time value and the 4th frequency values are the fixed value pre-set, or, indicate the 4th time value and the 4th frequency values by control message temporarily; Section Point sends retransmission feedback to reference relay station in the resource sending retransmission feedback.
By the technical scheme that the embodiment of the present invention provides, the synchronous HARQ processing procedure comprising relaying is described, compensate for the blank of prior art.
Be described in detail below in conjunction with example 4, example 5, example 6, example 7 and example 8 pairs of embodiment of the present invention.
Example 4
Fig. 7 is the detailed process figure of the example 4 of method according to Fig. 6, wherein, this example 4 is applied to the relay system of double bounce, data carry out transmitting and feeding back by the relaying of RS between the bs and ms, RS is the relay station of distributed scheduling, as shown in Figure 7, following process (step S701 is to step S715) is comprised.
Step S701, terminal sends bandwidth application request (BR) to relay station.
Step S702, relay station produces resource allocation message, for with its terminal distribution resource allocation information be directly connected, wherein, the resource information that this resource allocation information can use for this terminal transmission upstream data is (in order to clear description, this resource information is called resource information 1), and the resource information that this relay station transmission feedback (being also that terminal receives feedback) uses is (in order to clear description, this resource information is called resource information 2), and by message related to resources 1, resource information 2, and upstream data (Data 0) sends to terminal, particularly, resource information 1 and resource information 2 can be carried in Resourse Distribute bitmap (MAP) and send to terminal, in addition, this resource allocation information business also can comprise resource information 1, does not comprise resource information 2, and like this, resource allocation information 1 can be sent to this terminal by relay station.
S703, if terminal receives message related to resources 1, resource information 2, can send upstream data (Data 0) according to the moment of message related to resources 1 and/or content in the resource of specifying;
If terminal receives message related to resources 1, can determine resource information 2 according to resource information 1, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Terminal sends Data 0 according to resource information 1 to relay station;
Further, if relay station receives Data 0 failure, enter into step S704, if relay station receives Data 0 success, enter into step S706 and step S707.
S704, if relay station receives Data 0 failure, then according to message related to resources 2 to terminal feedback negative feedback (NACK) information, and enter into step S705.
Step S705, terminal receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to relay station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
In addition, if relay station receives Data 0 failure in predetermined number of retransmissions, terminal is abandoned sending Data 0 to relay station, and enters into step S713.
Step S706 is to step S707, if relay station receives Data 0 success, then according to resource information 2 to terminal feedback ACK information, and send bandwidth application request (BR) to base station, and enter into step S708.
Step S708, base station is this relay station Resources allocation assignment information, wherein, the resource information that this resource allocation information can use for this relay station transmission upstream data is (in order to clear description, this resource information is called resource information 3), and the resource information that this base station transmission feedback (being also that fried reception of relaying is fed back) uses is (in order to clear description, this resource information is called resource information 4), and by message related to resources 3, resource information 4 sends to relay station, particularly, resource information 3 and resource information 4 can be carried in Resourse Distribute bitmap (MAP) and send to relay station, in addition, this resource allocation information business also can comprise resource information 3, does not comprise resource information 4, and like this, resource allocation information 3 can be sent to this relay station by base station.
Step S709, if relay station receives message related to resources 3, resource information 4, can send upstream data (Data0) according to the moment of message related to resources 3 and/or content in the resource of specifying;
If relay station receives message related to resources 3, can determine resource information 4 according to resource information 3, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Relay station sends Data 0 according to resource information 3 to base station;
Further, if base station receives Data 0 failure, enter into step S710, if base station receives Data 0 success, enter into step S712.
S710, if base station receives Data 0 failure, then feeds back negative feedback (NACK) information according to message related to resources 4 to relay station, and enters into step S711.
Step S711, relay station receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to base station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S712, if base station receive Data 0 success, then according to resource information 4 to relay station feeding back ACK information.
Step S713 is to step S714, relay station is the resource allocation information that terminal distribution is new, terminal sends new upstream data (Data) according to this new resource allocation information to relay station, implementation procedure and step S702 similar to step S703, repeat no more here.
Alternatively, step S713 can be performed before step S708, can before step S709 step S714.
This at this example, base station can be changed to the relay station of distributed scheduling.In general, the relay station scheduling method on a link should be the same.
Example 5
Fig. 8 is the detailed process figure of the example 5 of method according to Fig. 2, wherein, this example 5 is applied to the relay system of double bounce, data carry out transmitting and feeding back by the relaying of RS between the bs and ms, RS is the relay station of centralized scheduling, as shown in Figure 8, following process (step S801 is to step S813) is comprised.
Step S801, terminal sends bandwidth application request (BR) to relay station.
Step S802, relay station forwards above-mentioned bandwidth application request (BR) to base station.
Step S803, base station assigns resource allocation message is (in order to clear description, this resource information is called resource allocation message 1), wherein, the resource information that this resource allocation information can use for this terminal transmission upstream data is (in order to clear description, this resource information is called resource information 1), and the resource information that this relay station transmission feedback (being also that terminal receives feedback) uses is (in order to clear description, this resource information is called resource information 2), and by message related to resources 1, resource information 2, and upstream data (Data 0) sends to terminal, particularly, resource information 1 and resource information 2 can be carried in Resourse Distribute bitmap (MAP) and send to terminal, in addition, this resource allocation information business also can comprise resource information 1, does not comprise resource information 2, and like this, resource allocation information 1 can be sent to this relay station by base station.
Step S804, resource allocation message 1 is carried in the map by relay station, sends to terminal.
S805, if terminal receives message related to resources 1, resource information 2, can send upstream data (Data 0) according to the moment of message related to resources 1 and/or content in the resource of specifying;
If terminal receives message related to resources 1, can determine resource information 2 according to resource information 1, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Terminal sends Data 0 according to resource information 1 to relay station;
Further, if relay station receives Data 0 failure, enter into step S806, if relay station receives Data 0 success, enter into step S808.
Step S806, if relay station receives Data 0 failure, then according to message related to resources 2 to terminal feedback negative feedback (NACK) information, and enter into step S807.
Step S807, terminal receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to relay station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S808, if relay station receives Data 0 success, then according to resource information 2 to terminal feedback ACK information, and enter into step S809.
Step S809, base station is this relay station Resources allocation assignment information, wherein, the resource information that this resource allocation information can use for this relay station transmission upstream data is (in order to clear description, this resource information is called resource information 3), and the resource information that this base station transmission feedback (being also that fried reception of relaying is fed back) uses is (in order to clear description, this resource information is called resource information 4), and by message related to resources 3, resource information 4 sends to relay station, particularly, resource information 3 and resource information 4 can be carried in Resourse Distribute bitmap (MAP) and send to relay station, in addition, this resource allocation information business also can comprise resource information 3, does not comprise resource information 4, and like this, resource allocation information 3 can be sent to this relay station by base station.
Step S810, if relay station receives message related to resources 3, resource information 4, can send upstream data (Data0) according to the moment of message related to resources 3 and/or content in the resource of specifying;
If relay station receives message related to resources 3, can determine resource information 4 according to resource information 3, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Relay station sends Data 0 according to resource information 3 to base station;
Further, if base station receives Data 0 failure, enter into step S811, if base station receives Data 0 success, enter into step S813.
S811, if base station receives Data 0 failure, then feeds back negative feedback (NACK) information according to message related to resources 4 to relay station, and enters into step S812.
Step S811, relay station receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to base station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S813, if base station receive Data 0 success, then according to resource information 4 to relay station feeding back ACK information.
Example 6
Fig. 9 is the detailed process figure of the example 6 of method according to Fig. 1, wherein, this example 6 is applied to the relay system of double bounce, data carry out transmitting and feeding back by the relaying of RS between the bs and ms, RS is the relay station of distributed scheduling, as shown in Figure 9, following process (step S901 is to step S915) is comprised.
Step S901, terminal sends bandwidth application request (BR) to relay station.
Step S902, relay station produces resource allocation message, for with its terminal distribution resource allocation information be directly connected, wherein, the resource information that this resource allocation information can use for this terminal transmission upstream data is (in order to clear description, this resource information is called resource information 1), and the resource information that this relay station transmission feedback (being also that terminal receives feedback) uses is (in order to clear description, this resource information is called resource information 2), and by message related to resources 1, resource information 2, and upstream data (Data 0) sends to terminal, particularly, resource information 1 and resource information 2 can be carried in Resourse Distribute bitmap (MAP) and send to terminal, in addition, this resource allocation information business also can comprise resource information 1, does not comprise resource information 2, and like this, resource allocation information 1 can be sent to this terminal by relay station.
S903, if terminal receives message related to resources 1, resource information 2, can send upstream data (Data 0) according to the moment of message related to resources 1 and/or content in the resource of specifying;
If terminal receives message related to resources 1, can determine resource information 2 according to resource information 1, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Terminal sends Data 0 according to resource information 1 to relay station;
Further, if relay station receives Data 0 failure, enter into step S904, if relay station receives Data 0 success, enter into step S906 and step S907.
S904, if relay station receives Data 0 failure, then according to message related to resources 2 to terminal feedback negative feedback (NACK) information, and enter into step S905.
Step S905, terminal receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to relay station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
In addition, if relay station receives Data 0 failure in predetermined number of retransmissions, terminal is abandoned sending Data 0 to relay station, and enters into step S914.
Step S906 is to step S907, if relay station receives Data 0 success, then according to resource information 2 to terminal feedback ACK information, and send bandwidth application request (BR) to base station, and enter into step S908.
Step S908, base station is this relay station Resources allocation assignment information, wherein, the resource information that this resource allocation information can use for this relay station transmission upstream data is (in order to clear description, this resource information is called resource information 3), and the resource information that this base station transmission feedback (being also that fried reception of relaying is fed back) uses is (in order to clear description, this resource information is called resource information 4), and by message related to resources 3, resource information 4 sends to relay station, particularly, resource information 3 and resource information 4 can be carried in Resourse Distribute bitmap (MAP) and send to relay station, in addition, this resource allocation information business also can comprise resource information 3, does not comprise resource information 4, and like this, resource allocation information 3 can be sent to this relay station by base station.
Step S909, if relay station receives message related to resources 3, resource information 4, can send upstream data (Data0) according to the moment of message related to resources 3 and/or content in the resource of specifying;
If relay station receives message related to resources 3, can determine resource information 4 according to resource information 3, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Relay station sends Data 0 according to resource information 3 to base station;
Further, if base station receives Data 0 failure, enter into step S910, if base station receives Data 0 success, enter into step S913.
Step S910 is to step S911, if base station receives Data 0 failure, then feed back negative feedback (NACK) information according to message related to resources 4 to relay station, and repeat to send the resource allocation information (by this resource allocation information referred to as resource allocation information 1) of Data 0 for relay station distributes, concrete assigning process and step S908 similar, here repeat no more, and enter into step S912.
Step S912, relay station receiving resource allocation information 1, and repeat to send Data 0 to base station according to resource allocation information 1.
Step S913, if base station receive Data 0 success, then according to resource information 4 to relay station feeding back ACK information.
Step S914 is to step S915, relay station is the resource allocation information that terminal distribution is new, terminal sends new upstream data (Data1) according to this new resource allocation information to relay station, implementation procedure and step S902 similar to step S903, repeat no more here.
Wherein, example 6 is with the difference of example 4, example 5: the repeated link of example 4 and example 5 have employed synchronous HARQ, the repeated link of example 6 have employed asynchronous HARQ, therefore, when base station sends upstream data to relay station at every turn, all must specify the message related to resources that relay station reception upstream data uses.
Example 7
Figure 10 is the detailed process figure of the example 7 of method according to Fig. 6, wherein, this example 7 is applied to the relay system of double bounce, data carry out transmitting and feeding back by the relaying of RS between the bs and ms, RS is the relay station of distributed scheduling, as shown in Figure 10, following process (step S1001 is to step S1014) is comprised.
Step S1001, terminal sends bandwidth application request (BR) to relay station.
Step S1002, relay station produces resource allocation message, for with its terminal distribution resource allocation information be directly connected, wherein, the resource information that this resource allocation information can use for this terminal transmission upstream data is (in order to clear description, this resource information is called resource information 1), and the resource information that this relay station transmission feedback (being also that terminal receives feedback) uses is (in order to clear description, this resource information is called resource information 2), and by message related to resources 1, resource information 2, and upstream data (Data 0) sends to terminal, particularly, resource information 1 and resource information 2 can be carried in Resourse Distribute bitmap (MAP) and send to terminal, in addition, this resource allocation information business also can comprise resource information 1, does not comprise resource information 2, and like this, resource allocation information 1 can be sent to this terminal by relay station.
Step S1003, if terminal receives message related to resources 1, resource information 2, can send upstream data (Data 0) according to the moment of message related to resources 1 and/or content in the resource of specifying;
If terminal receives message related to resources 1, can determine resource information 2 according to resource information 1, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Terminal sends Data 0 according to resource information 1 to relay station;
Further, if relay station receives Data 0 failure, step S1004 is entered into.
Step S1004, if relay station receives Data 0 failure, then according to message related to resources 2 to terminal feedback negative feedback (NACK) information, and enter into step S1005.
Step S1005, terminal receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to relay station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S1006, if relay station receives Data 0 failure, then according to predetermined resource to terminal feedback negative feedback (NACK) information, and enter into step S1007, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S1007 is to step S1008, relay station is the resource allocation information that terminal distribution is new, terminal sends new upstream data (Data1) according to this new resource allocation information to relay station, implementation procedure and step S1002 similar to step S1003, repeat no more here.
Step S1009, relay station sends bandwidth application request (BR) to base station, and enters into step S1010.
Step S1010, base station is this relay station Resources allocation assignment information, wherein, the resource information that this resource allocation information can use for this relay station transmission upstream data is (in order to clear description, this resource information is called resource information 3), and the resource information that this base station transmission feedback (being also that fried reception of relaying is fed back) uses is (in order to clear description, this resource information is called resource information 4), and by message related to resources 3, resource information 4 sends to relay station, particularly, resource information 3 and resource information 4 can be carried in Resourse Distribute bitmap (MAP) and send to relay station, in addition, this resource allocation information business also can comprise resource information 3, does not comprise resource information 4, and like this, resource allocation information 3 can be sent to this relay station by base station.
Step S1011, if relay station receives message related to resources 3, resource information 4, can send upstream data (Data1) according to the moment of message related to resources 3 and/or content in the resource of specifying;
If relay station receives message related to resources 3, can determine resource information 4 according to resource information 3, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Relay station sends Data 1 according to resource information 3 to base station;
Further, if base station receives Data 1 failure, enter into step S1012, if base station receives Data 0 success, enter into step S1014.
S1012, if base station receives Data 1 failure, then feeds back negative feedback (NACK) information according to message related to resources 4 to relay station, and enters into step S1013.
Step S1013, relay station receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 1 to base station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S1014, if base station receive Data 1 success, then according to resource information 4 to relay station feeding back ACK information.
In this example, when the relay station reception retransmission data Data 0 of distributed scheduling exceedes pre-determined number (twice), this relay station can be dispatched voluntarily and send scheduling of resource message to terminal, terminal is abandoned sending failed data Data 0, and the resource that relay station is specified sends new upstream data Data 1.
Example 8
Figure 11 is the detailed process figure of the example 8 of method according to Fig. 6, wherein, this example 8 is applied to the relay system of double bounce, data carry out transmitting and feeding back by the relaying of RS between the bs and ms, RS is the relay station of centralized scheduling, as shown in figure 11, following process (step S1101 is to step S1115) is comprised.
Step S1101, terminal sends bandwidth application request (BR) to relay station.
Step S1102, relay station forwards above-mentioned bandwidth application request (BR) to base station.
Step S1103, base station assigns resource allocation message is (in order to clear description, this resource information is called resource allocation message 1), wherein, the resource information that this resource allocation information can use for this terminal transmission upstream data is (in order to clear description, this resource information is called resource information 1), and the resource information that this relay station transmission feedback (being also that terminal receives feedback) uses is (in order to clear description, this resource information is called resource information 2), and by message related to resources 1, resource information 2, and upstream data (Data 0) sends to terminal, particularly, resource information 1 and resource information 2 can be carried in Resourse Distribute bitmap (MAP) and send to terminal, in addition, this resource allocation information business also can comprise resource information 1, does not comprise resource information 2, and like this, resource allocation information 1 can be sent to this relay station by base station.
Step S1104, resource allocation message 1 is carried in the map by relay station, sends to terminal.
S1105, if terminal receives message related to resources 1, resource information 2, can send upstream data (Data 0) according to the moment of message related to resources 1 and/or content in the resource of specifying;
If terminal receives message related to resources 1, can determine resource information 2 according to resource information 1, the processing procedure of concrete defining method and the first presupposed information is similar, repeats no more here;
Terminal sends Data 0 according to resource information 1 to relay station;
Further, if relay station receives Data 0 failure, enter into step S1106, if relay station receives Data 0 success, enter into step S1108.
Step S1106, if relay station receives Data 0 failure, then according to message related to resources 2 to terminal feedback negative feedback (NACK) information, and enter into step S1107.
Step S1107, terminal receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 0 to relay station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S1108 is to step S1109, if relay station receives Data 0 failure, can to terminal feedback negative feedback (NACK) information, and abandon the reception of this Data 0, now, the relay station new upstream data (data 1) that can send to the bandwidth application request (BR) that base station requests is new with receiving terminal.
Step S1110 is to step S1111, base station can be distributed and send new resource allocation information (for convenience, this new resource allocation information is called resource information 1), concrete distribute and sending method and step S1103 similar to step S1104, repeat no more here.
Step S1112, terminal sends Data 1 according to new resource information 1 to relay station; If relay station receives Data 1 success, enter into step S1113 to step S1114.
Step S1113 is to step S1114, if relay station receives Data 1 success, then according to resource information 2 to terminal feedback ACK information, and send bandwidth application request (BR) to base station, and enter into step S1115.
Step S1115, standing-meeting distributes and sends new resource allocation information (for convenience, this new resource allocation information being called resource information 2), concrete distribute and sending method and step S1103 similar to step S1104, repeat no more here.
Step S1116, relay station receives resource information 2, can send upstream data (Data 1) according to the moment of message related to resources 2 and/or content in the resource of specifying;
Further, if base station receives Data 1 failure, enter into step S1117, if base station receives Data 1 success, enter into step S1119.
Step S1117, if base station receives Data 1 failure, then feeds back negative feedback (NACK) information according to message related to resources 2 to relay station, and enters into step S1118.
Step S1118, relay station receives negative feedback (NACK) information, the predetermined resource of synchronous mode repeats send Data 1 to base station, and wherein, the processing procedure of this predetermined resource and the first presupposed information is similar, repeats no more here.
Step S1119, if base station receive Data 1 success, then according to message related to resources 2 to relay station feeding back ACK information.
In this example, when the relay station reception retransmission data Data 0 of centralized scheduling exceedes pre-determined number, the relay station of centralized scheduling must be applied for respective resources and send scheduling of resource message to mobile terminal, mobile terminal is abandoned sending failed data Data 0, and allocated resource sends new Data 1.This application can be independently bandwidth solicitation message (BR, bandwidth request), also can be the negative feedback (coded NAK) of coding or simple negative feedback NAK.The negative feedback of this coding can be very useful when relaying jumping figure exceedes double bounce.In embodiment eight, simple negative feedback is also passable.
Concrete, mobile terminal sends bandwidth application to relay station, and relay station receives bandwidth application backward base station bandwidth application.The application of relay station can be an independently bandwidth application, also can be the negative feedback of a coding or directly negative feedback (negative feedback of coding is used to indicate the situation of multi-hop relay, now relay station can one-level one-level negative feedback coding to represent which jumping is the bandwidth of application be used in).The application that base station receives relay station utilizes afterwards and is included in Resourse Distribute bitmap in resource allocation message to relay station Resources allocation, and this resource comprises the resource between relay station and all terminals of subordinate.Relay station decodes resource bitmap after receiving the resource allocation message from base station, regenerates the resource allocation message of oneself, and transmission comprises the resource allocation message of Resourse Distribute bitmap to corresponding mobile terminal.Corresponding mobile terminal sends data and receives feedback in given resource.
In the present embodiment, retransmit once still not successful due to data 0 and reach predetermined number of retransmissions, mobile terminal abandons data 0 and starts to send data 1.The process sending data 1 is the same with the process sending data 0.
After the relay station successful data reception Data 1 of centralized scheduling, the relay station of centralized scheduling must apply for that respective resources sends described data Data 1 data 1.This application can be independently bandwidth solicitation message (BR, bandwidth request), also can be the positive feedback of coding or simple positive feedback ACK.(positive feedback of coding is used to indicate the situation of multi-hop relay, now relay station can one-level one-level positive feedback coding with represents application bandwidth be used in which jumping).
Obtain distributing after bandwidth, it is similar that concrete transfer of data and feedback procedure and mobile terminal send data to relay station process, is all synchronous HARQ.
From above embodiment, the present invention completely can realize various synchronous HARQ design of often jumping feedback, compensate for prior art blank.
It should be noted that; in the present invention; relaying can comprise two or more relay station; link between each node can adopt synchronous or asynchronous HARQ mode; the scheduling mode of each node also can be different; such as there is the node of centralized scheduling and distributed scheduling to be present in same link simultaneously, but as long as there is a link to contain synchronous HARQ, just should within protection scope of the present invention.In addition, in above-mentioned all embodiments, if the transmission frequency of failure of certain data exceedes pre-determined number (this pre-determined number can pre-set according to actual needs), then transmitting terminal can abandon these data, the new data (time now sending this data failure does not also exceed data life span) that also these data can be sent as next time.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.

Claims (42)

1. a downlink transmission method for synchrodata, is applied to the wireless communication system comprising synchronous HARQ processing procedure and relay station, it is characterized in that, described method comprises:
Reference relay station receives the first resource assignment messages from first node, and receives the downlink data of described first node transmission according to described first resource assignment messages;
If downlink data described in described reference relay station garbled-reception, then send negative feedback to described first node, on the first predetermined resource, again send described downlink data to described reference relay station to make described first node;
If described reference relay station correctly receives described downlink data, then send Secondary resource assignment messages and described downlink data to Section Point.
2. method according to claim 1, it is characterized in that, described first resource assignment messages carries one of following: described first node sends the resource information that described downlink data uses, described first node sends resource information that described downlink data uses and described reference relay station sends the resource information fed back and use; Described Secondary resource assignment messages carries one of following: described reference relay station sends the resource information that described downlink data uses, described reference relay station sends resource information that described downlink data uses and described Section Point sends the resource information fed back and use.
3. method according to claim 2, is characterized in that, described according to described first resource assignment messages receive described first node send downlink data comprise:
The described downlink data that described in asset information receipt that described downlink data uses, first node sends is sent according to the described first node carried in described first resource assignment messages.
4. method according to claim 2, is characterized in that, after sending Secondary resource assignment messages and described downlink data to Section Point, described method also comprises:
Described Section Point sends according to the described reference relay station of carrying in described Secondary resource assignment messages the described downlink data that described in the asset information receipt that described downlink data uses, reference relay station sends.
5. method according to claim 2, is characterized in that,
If described first resource assignment messages is not carried described reference relay station and sent the resource information fed back and use, then, before described reference relay station sends feedback, described method also comprises:
According to the first presupposed information, described reference relay station determines that it sends the resource information fed back and use;
If described Secondary resource assignment messages is not carried described Section Point and sent the resource information fed back and use, then, before described Section Point sends feedback, described method also comprises:
According to the second presupposed information, described Section Point determines that it sends the resource information fed back and use.
6. method according to claim 5, is characterized in that,
Described first presupposed information comprises one of following: very first time value, first frequency value and the first datum mark preset;
Described first datum mark comprises one of following: described first node sends the resource information that described first resource assignment messages uses, described first node sends the resource information that described downlink data uses;
Wherein, described very first time value and described first frequency value are the fixed value pre-set, or, indicate interim described very first time value and described first frequency value by control message;
Described second presupposed information comprises one of following: the second time value, second frequency value and the second datum mark preset;
Described second datum mark comprises one of following: described reference relay station sends the resource that described Secondary resource assignment messages uses, described reference relay station sends the resource information that described downlink data uses;
Wherein, described second time value and described second frequency value are the fixed value pre-set, or, indicate described second time value and described second frequency value by control message temporarily.
7. method according to claim 2, is characterized in that, also carry the mark of synchronous HARQ pattern in described first resource assignment messages and/or described Secondary resource assignment messages, being used to indicate this data transfer is synchronous HARQ pattern.
8. method according to claim 2, is characterized in that, before described first node resends described downlink data, described method also comprises:
Described first node determines described first predetermined resource according to the first reference information preset.
9. method according to claim 8, is characterized in that,
Described the first default reference information comprises: the first reference time value, the first reference frequency value and the first reference point preset;
Described first reference point comprises one of following: described first node sends the resource that described first resource assignment messages uses, described first node sends the resource that described downlink data uses;
Wherein, described first reference time value and described first reference frequency value are the fixed value pre-set, or, indicate described first reference time value and described first reference frequency value by control message temporarily.
10. method according to claim 2, is characterized in that, after described first node resends described downlink data, described method also comprises:
According to the 3rd information preset, described reference relay station determines that it sends the resource of retransmission feedback.
11. methods according to claim 10, is characterized in that,
Described the 3rd information of presetting comprises: the 3rd time value, the 3rd frequency values and the 3rd datum mark preset;
Described 3rd datum mark comprises one of following: the resource that described first node sends the resource of described first resource assignment messages, described first node sends described downlink data, described reference relay station send the resource information, the described predetermined resource that feed back and use;
Wherein, described 3rd time value and described 3rd frequency values are the fixed value pre-set, or, indicate described 3rd time value and described 3rd frequency values by control message temporarily;
Described reference relay station sends described retransmission feedback in the resource of described transmission retransmission feedback.
12. methods according to any one of claim 1 to 11, is characterized in that, described first node comprises one of following: base station, relay station except described reference relay station; Described Section Point comprises one of following: the relay station except described reference relay station, terminal.
13. methods according to claim 12, is characterized in that, if described first node is the relay station of base station or distributed scheduling, if then described reference relay station correctly receives described downlink data, described method also comprises:
Described reference relay station sends positive feedback information to described first node;
Described first node distributes to described reference relay station and sends new resource allocation message, and sends downlink data corresponding to described new resource allocation message.
14. methods according to claim 12, is characterized in that, if first node is the relay station of centralized scheduling, if after then described reference relay station correctly receives described downlink data, described method also comprises:
Described reference relay station sends positive feedback information or bandwidth request message to described first node;
Described first node directly sends or is sent by other relay station relays the positive feedback information after described bandwidth request message or coding to base station, the resource allocation message that please look for novelty.
15. methods according to claim 12, is characterized in that, if reference relay station is the relay station of distributed scheduling, then, after described reference relay station sends described downlink data, described method also comprises:
Described Section Point correctly receives described downlink data, and sends positive feedback information to described reference relay station;
Described reference relay station is that described Section Point distributes and sends new resource allocation message, and sends downlink data corresponding to described new resource allocation message.
16. methods according to claim 12, it is characterized in that, if reference relay station is the relay station of centralized scheduling, and described Section Point correctly receives described downlink data, then after described reference relay station sends described downlink data, described method also comprises:
Described Section Point correctly receives described downlink data, and sends positive feedback information to described reference relay station;
Described reference relay station directly sends or is sent by other relay station relays the positive feedback information after bandwidth request message or coding to base station, the resource allocation message that please look for novelty;
Wherein, carry the mark of synchronous HARQ pattern in described bandwidth request message, being used to indicate this data transfer is synchronous HARQ pattern.
17. methods according to claim 12, is characterized in that, if reference relay station is the relay station of distributed scheduling or the relay station of centralized scheduling, then, after described reference relay station sends described downlink data, described method also comprises:
Downlink data described in described Section Point garbled-reception, and send negative-feedback information to described reference relay station;
Described reference relay station repeats to send described downlink data to described Section Point in the second predetermined resource information, wherein, describedly repeats to send described downlink data and refers to: repeat to send the part or all of of described downlink data.
18. methods according to claim 17, is characterized in that, before described reference relay station repeats to send described downlink data, described method also comprises:
Described reference relay station determines described second predetermined resource according to the second reference information preset.
19. methods according to claim 18, is characterized in that,
Described the second default reference information comprises: the second reference time value, the second reference frequency value and the second reference point preset;
Described second reference point comprises one of following: described reference relay station sends the resource that described Secondary resource assignment messages uses, described reference relay station sends the resource that described downlink data uses;
Wherein, described second reference time value and described second reference frequency value are the fixed value pre-set, or, indicate described second reference time value and described second reference frequency value by control message temporarily.
20. methods according to claim 18, is characterized in that, described reference relay station is to after described Section Point repeats to send described downlink data, and described method also comprises:
According to the 4th information preset, described Section Point determines that it sends the resource of retransmission feedback.
21. methods according to claim 20, is characterized in that,
Described 4th information comprises: the 4th time value, the 4th frequency values and the 4th datum mark;
Described 4th datum mark comprises one of following: the resource that described reference relay station sends the resource of described Secondary resource assignment messages, described reference relay station sends described downlink data, described Section Point send resource information, the described default resource feeding back and use;
Wherein, described 4th time value and described 4th frequency values are the fixed value pre-set, or, indicate described 4th time value and described 4th frequency values by control message temporarily;
Described Section Point sends described retransmission feedback to described reference relay station.
The ascending transmission method of 22. 1 kinds of synchrodatas, is applied to the wireless communication system comprising synchronous HARQ processing procedure and relay station, it is characterized in that, described method comprises:
Reference relay station sends first resource assignment messages to first node, and receives the upstream data that described first node sends according to described first resource assignment information;
If upstream data described in described reference relay station garbled-reception, then send negative feedback to described first node, on the first predetermined resource, resend described upstream data to described reference relay station to make described first node;
If described reference relay station correctly receives described upstream data, then described reference relay station sends described upstream data to described Section Point.
23. methods according to claim 22, is characterized in that, described method also comprises:
If described reference relay station correctly receives described upstream data, then send positive feedback to described first node.
24. methods according to claim 22, is characterized in that, before described reference relay station sends described upstream data to described Section Point, described method also comprises:
Described reference relay station sends bandwidth request to described Section Point, in response to described bandwidth request, described Section Point sends Secondary resource assignment messages to described reference relay station, wherein, described Secondary resource assignment messages is at least used to indicate described reference relay station and sends the resource that described upstream data uses.
25. methods according to claim 24, it is characterized in that, described first resource assignment messages comprises one of following: described first node sends the resource information that described upstream data uses, described first node sends resource information that described upstream data uses and described first node receives the resource information fed back and use; Described Secondary resource assignment messages comprises one of following: the resource information that described reference relay station sends the resource information that described upstream data uses, described reference relay station sends described upstream data and described reference relay station receive the resource information fed back and use.
26. methods according to claim 24, is characterized in that,
If described first resource assignment messages is not carried described first node and received the resource information fed back and use, then, before described first node receives feedback, described method also comprises:
According to the first presupposed information, described first node determines that it receives the resource information fed back and use;
If described Secondary resource assignment messages is not carried described reference relay station and received the resource information fed back and use, then, before described reference relay station sends feedback, described method also comprises:
According to the second presupposed information, described reference relay station determines that it receives the resource information fed back and use.
27. methods according to claim 26, is characterized in that,
Described first presupposed information comprises: very first time value, first frequency value and the first datum mark preset;
Described first datum mark comprises one of following: the resource that described first node receives the resource of described first resource assignment messages, described first node sends described upstream data;
Wherein, described very first time value and described first frequency value are the fixed value pre-set, or, indicate described very first time value and described first frequency value by control message temporarily;
Described second presupposed information comprises: the second time value, second frequency value and the second datum mark preset;
Described second datum mark comprises one of following: the resource that described reference relay station receives the resource of described Secondary resource assignment messages, described reference relay station sends described upstream data;
Wherein, described second time value and described second frequency value are the fixed value pre-set, or, indicate described second time value and described second frequency value by control message temporarily.
28. methods according to claim 24, is characterized in that, before described first node resends described upstream data, described method also comprises:
Described first node determines described first predetermined resource according to the first reference information preset.
29. methods according to claim 28, is characterized in that,
Described the first default reference information comprises: the first reference time value, the first reference frequency value and the first reference point preset;
Described first reference point comprises one of following: the resource that described first node receives the resource of described first resource assignment messages, described first node sends described upstream data;
Wherein, described first reference time value and described first reference frequency value are the fixed value pre-set, or, indicate described first reference time value and described first reference frequency value by control message temporarily.
30. methods according to claim 28, is characterized in that, described first node is after resending described upstream data to described reference relay station, and described method also comprises:
According to the 3rd information preset, described reference relay station determines that it sends the resource of retransmission feedback.
31. methods according to claim 30, is characterized in that,
Described the 3rd information of presetting comprises: the 3rd time value, the 3rd frequency values and the 3rd datum mark preset;
Described 3rd datum mark comprises one of following: the resource that described first node receives the resource of described first resource assignment messages, described first node sends described upstream data, described reference relay station send the resource information, the described predetermined resource that feed back and use;
Wherein, described 3rd time value and described 3rd frequency values are the fixed value pre-set, or, indicate described 3rd time value and described 3rd frequency values by control message temporarily;
Described reference relay station sends described retransmission feedback in the resource of described transmission retransmission feedback.
32. methods according to claim 22, is characterized in that, if described reference relay station is distributed scheduling relay station, before described reference relay station sends first resource assignment messages to first node, described method also comprises:
Described first node sends the first bandwidth request to described reference relay station, the resource of asking described first node to send described upstream data to use;
Described reference relay station, according to described first bandwidth request, is described first node distribution first resource assignment messages.
33. methods according to claim 22, is characterized in that, if described reference relay station is centralized scheduling relay station, before described reference relay station sends first resource assignment messages to first node, described method also comprises:
Described first node sends the first bandwidth request to described reference relay station, the resource of asking described first node to send described upstream data to use;
Described reference relay station sends described first bandwidth request message directly to base station, and described first resource assignment messages is sent to described reference relay station by described base station; Or described reference relay station is by other relay station relays, and send described first bandwidth request message to base station, described first resource assignment messages, by other relay station relays described, is sent to described reference relay station by described base station.
34. methods according to any one of claim 24 to 33, is characterized in that, described first node comprises one of following: the relay station except described reference relay station, terminal; Described Section Point comprises one of following: base station, relay station except described reference relay station.
35. methods according to claim 34, is characterized in that, if described Section Point is the relay station of base station or distributed scheduling, describedly to comprise in response to described bandwidth request:
Described Section Point, according to described bandwidth request, is described reference relay station distribution Secondary resource assignment messages.
36. methods according to claim 34, is characterized in that, if described Section Point is the relay station of centralized scheduling, describedly to comprise in response to described bandwidth request:
Described Section Point sends described bandwidth request message directly to base station;
Described Secondary resource assignment messages, according to described bandwidth request message, is distributed and sends to described Section Point by described base station;
Described Secondary resource assignment messages is sent to described reference relay station by described Section Point;
Or,
Described Section Point, by other relay station relays, sends described bandwidth request message to base station;
Described Secondary resource assignment messages, according to the second bandwidth request message, is distributed in described base station, and by other relay station relays described, described Secondary resource assignment messages is sent to described Section Point;
Described Secondary resource assignment messages is sent to described reference relay station by described Section Point.
37. methods according to claim 34, is characterized in that, if reference relay station is the relay station of distributed scheduling or the relay station of centralized scheduling, then, after described reference relay station sends described upstream data, described method also comprises:
If upstream data described in described Section Point garbled-reception;
Described Section Point sends negative-feedback information to described reference relay station;
Described reference relay station repeats to send described upstream data to described Section Point in the second predetermined resource information, wherein, describedly repeats to send described upstream data and refers to: repeat to send the part or all of of described upstream data.
38. methods according to claim 34, is characterized in that, if described Section Point correctly receives described upstream data, described Section Point sends positive feedback information to described reference relay station.
39., according to method according to claim 37, is characterized in that, before described reference relay station repeats to send described upstream data, described method also comprises:
Described reference relay station determines described second predetermined resource according to the second reference information preset.
40., according to method according to claim 39, is characterized in that,
Described the second default reference information comprises: the second reference time value, the second reference frequency value and the second reference point preset;
Wherein, described second reference point comprises one of following: the resource that described reference relay station receives the resource of described first resource assignment messages, described reference relay station sends described upstream data;
Wherein, described second reference time value and described second reference frequency value are the fixed value pre-set, or, indicate described second reference time value and described second reference frequency value by control message temporarily.
41., according to method according to claim 39, is characterized in that, described reference relay station is to after described Section Point repeats to send described upstream data, and described method also comprises:
According to the 4th information preset, described Section Point determines that it sends the resource of retransmission feedback.
42. methods according to claim 41, is characterized in that,
Described 4th information comprises: the 4th time value, the 4th frequency values and the 4th datum mark;
Wherein, described 4th datum mark comprises one of following: the resource that described reference relay station receives the resource of described Secondary resource assignment messages, described reference relay station sends described upstream data, described Section Point send resource information, the described default resource feeding back and use;
Wherein, described 4th time value and described 4th frequency values are the fixed value pre-set, or, indicate described 4th time value and described 4th frequency values by control message temporarily;
Described Section Point sends described retransmission feedback to described reference relay station in the resource of described transmission retransmission feedback.
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