CN101667902B - Data transmission and feedback method - Google Patents
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- CN101667902B CN101667902B CN 200810213729 CN200810213729A CN101667902B CN 101667902 B CN101667902 B CN 101667902B CN 200810213729 CN200810213729 CN 200810213729 CN 200810213729 A CN200810213729 A CN 200810213729A CN 101667902 B CN101667902 B CN 101667902B
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Abstract
The invention provides a data transmission and feedback method, which comprises that: in response to data transmitted by a transmission terminal, a relay node transmits a feedback to the transmission terminal and a control node respectively, and transmits the received data to a receiving terminal; and under the condition of receiving the feedback from the receiving terminal, the relay node transmits the feedback to the control node. The data transmission and feedback method can solve the problem that a base station is compulsory for data transmission in the prior art, effectively shorten a transmission path and reduce the time delay of the data transmission.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method of data transmission and feedback.
Background technology
Wireless communication system uses electromagnetic wave and fixing or mobile wireless communication terminal (for example, mobile phone or with the notebook computer of wireless communication card etc. all can be referred to as terminal) to communicate.Within terminal all is positioned at the wireless coverage of system, and system assignment is divided into a plurality of carrier frequencies as radio communication channel for the wave frequency of these terminals.Wireless communication system utilizes the specific radio communication channel to provide wireless coverage in certain geographic range by the base station, and this geographic range is called the residential quarter, and the base station generally all is positioned at the central authorities of residential quarter.
The coverage of wireless network is subject to the impact of various factors: for example, towering building may block the wireless signal of base station, thereby causes the signal in certain zone seriously to weaken, and the signal of cell edge also can weaken and causes terminal to receive error rate to increase.The capacity requirement of wireless communication system is subject to the various factors impact: for example working as the user (for example sharply increases, a certain regional number rolls up when holding exhibition) or call volume (for example sharply increase, when typhoon arrives, a lot of users dial phone) time, require to increase power system capacity, and in remote rural area or mountain area, the capacity of a base station often can not with full in coverage, just need to enlarge system ovelay range to utilize unnecessary power system capacity this moment.
For expanding system capacity or expansion system ovelay range, one or more relay station (Relay Station is referred to as RS) can be arranged between the base station and terminal of supporting multi-hop relay (the following wireless communication system of relay station that will comprise is referred to as system).Relay station can be used for relay base station to the signal of terminal (descending) or terminal to base station (up).After adopting relay station, can effectively improve the transmission quality of communications link signals, thereby reach the purpose of expanding system capacity or expansion system ovelay range.
Terminal is jumped by one or the communication path of multi-hop relay station access base station is called relay route, is called the access relay station with the relay station that terminal directly is connected, and the communication link that accesses relay station and terminal is called access link.On relay route, the access relay station can communicate by other relay station and base station.On relay route, between relay station and the communication link between relay station and base station be called repeated link.Relay station can be fixing, and roaming is perhaps moved.
But due to the introducing of relay station, mixing automatic repeat request (Hybrid AutoRepeat Request is referred to as HARQ) design also can corresponding complexity.The HARQ technology is a kind of link adaptation techniques, and ARQ is automatic repeat request, and the HARQ technology is the technology with forward error correction (Forward Error Correction Code is referred to as FEC) is encoded and HARQ combines.The forward error correction coding technology has improved the reliability of transmission, but when channel situation is better, due to too much correction bits, has reduced on the contrary throughput.The ARQ technology is not in the situation that the error rate is very highly can obtain desirable throughput, but can introduce time delay, considers FEC technology and ARQ technology are combined just to have formed mixing automatic repeat request technology.The check bit that contains error correction and error detection in each packet that sends.If receive and to make mistakes bit number within error correcting capability in bag, wrongly corrected voluntarily, when mistake has exceeded the error correcting capability of FEC technology, allow the repeating transmission of making a start.
According to the definite method that retransmits delivery time, the HARQ technology can be divided into the synchronous and asynchronous mode.The definition of synchronous HARQ technology retransmits and occurs on the fixed resource of fixed intervals frame, and therefore retransmitting does not need extra signaling consumption.And asynchronous HARQ technology definition re-transmission can occur on any cost of arbitrary frame, and therefore retransmitting needs extra signaling consumption.
The scheduling of resource of relay system can be divided into centralized control and distributed control.Channel resource allocation in integrated system must be completed by the base station (Multi-hop RelayBase Station is referred to as MR-BS) of multi-hop relay, and the RS in distributed system is the distribution portion resource voluntarily.Because all will concentrating on MR-BS, all scheduling of resource of the relay system that adopts centralized control process, so corresponding mixed automatic retransfer request design is more complicated.
The HARQ scheme that comprises at present repeater in technology is all simple upstream or downstream, the terminal point of transfer of data or feedback and starting point must be all base station or terminal, if namely two terminals carry out transfer of data must be via the base station, such design has been in the situation that transmitting terminal and transmission ends close together have obviously extended data transfer path, thereby correspondingly increased the transfer of data time-delay.
Summary of the invention
The present invention aims to provide that a kind of data send and the method for feedback, and two terminals are carried out transfer of data or feedback must be via the problem of base station to solve in prior art, and the obvious like this path that extends transfer of data has increased the transfer of data time-delay.
According to an aspect of the present invention, provide a kind of data to send and feedback method, be applied to centralized every jumping feedback wireless communication system, also comprise at least one via node, transmitting terminal, receiving terminal in this wireless communication system and control node, said method comprises:
In response to the data that transmitting terminal sends, via node feeds back respectively to transmitting terminal and control node, and the data that receive are sent to receiving terminal;
In the situation that via node receives feedback from receiving terminal, via node feeds back to controlling node.
According to another aspect of the invention, provide a kind of data to send and feedback method, be applied to centralized end-to-end feedback wireless communication system, this wireless communication system comprises at least one via node, transmitting terminal, receiving terminal and controls node, and said method comprises:
Via node will send to receiving terminal by the data that transmitting terminal sends;
Via node receives the feedback of receiving terminal, feeds back to controlling node and transmitting terminal respectively.
According to another aspect of the invention, provide a kind of data to send and feedback method, be used for centralized end-to-end feedback wireless communication system, wherein, wireless communication system comprises at least one via node, transmitting terminal, receiving terminal and control node, and said method comprises:
Via node will send to receiving terminal by the data that transmitting terminal sends, and feed back to controlling node;
Via node receives the feedback of receiving terminal and feeds back to controlling node and transmitting terminal respectively.
In accordance with a further aspect of the present invention, provide a kind of data to send and feedback method, be used for the every jumping feedback of distributed scheduling wireless communication system, wherein, wireless communication system comprises at least one via node, transmitting terminal, receiving terminal and controls node, said method:
Via node will send to receiving terminal by the data that transmitting terminal sends, and feed back to transmitting terminal;
Via node receives the feedback of receiving terminal.
By one of technique scheme, the present invention is by directly forwarding the data of transmitting terminal to receiving terminal at relay station, and correspondingly feed back to transmitting terminal, base station, receiving terminal, operate accordingly according to feedback information, overcome that in prior art, the transmission of data must be through the problem of base station, effectively shorten transmission path, reduced the transfer of data time-delay.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the system schematic of correlation technique;
Fig. 2 is according to the data transmission of the inventive method embodiment one and the flow chart of feedback method;
Fig. 3 is the flow chart of the every jumping feedback HARQ when being centralized scheduling of the via node according to the inventive method embodiment one;
Fig. 4 is according to the flow chart of transmitting terminal data retransmission under the synchronous HARQ situation in the inventive method embodiment one;
Fig. 5 is according to the flow chart of transmitting terminal data retransmission under asynchronous HARQ situation in the inventive method embodiment one;
Fig. 6 is according to the data transmission of the inventive method embodiment two and the flow chart of feedback method;
Fig. 7 is the flow chart of the end-to-end feedback HARQ when being centralized scheduling of the via node according to the inventive method embodiment two;
Fig. 8 is that the transmitting terminal according to the inventive method embodiment two sends successfully but relay station sends failed flow chart;
Fig. 9 is according to the data transmission of the inventive method embodiment three and the flow chart of feedback method;
Figure 10 is the flow chart of the end-to-end feedback HARQ when being centralized scheduling of the via node according to the inventive method embodiment three;
But Figure 11 sends the data success the flow chart of relay station transmission data failure according to transmitting terminal in the inventive method embodiment three;
Figure 12 is according to the data transmission of the inventive method embodiment four and the flow chart of feedback method;
Figure 13 is the flow chart of the every jumping feedback HARQ when being distributed scheduling of the via node according to the inventive method embodiment four;
Figure 14 is the flow chart according to data re-transmission in the inventive method embodiment four;
Figure 15 is according to the data transmission of the inventive method embodiment four and another flow chart of feedback method.
Embodiment
Functional overview
The present invention is directed in prior art the defective of data transfer path improves, the transmission of data in prior art must be improved to data through the base station directly to be forwarded by relay station, need not through forwarding again behind the base station, in the present invention, the base station only needs to carry out corresponding resource distribution according to the feedback of relay station, so just shorten the path of transfer of data, shortened the propagation delay time of data.
Fig. 1 is system schematic related to the present invention, as shown in Figure 1, mobile terminal 1 carries out data interaction with mobile terminal 2 in the prior art, the transmission path of these data is mobile terminal 1, relay station, base station, relay station, mobile terminal 2, obviously in the situation that mobile terminal 1 is nearer with mobile terminal 2, such transmission means has extended data transfer path, has increased the transfer of data time-delay.Propose the present invention based on this, take system environments shown in Figure 1 as the basis, the below describes the present invention in detail, and following via node can be relay station, and controlling node can be the base station.
Embodiment of the method one
In the present embodiment, a kind of method that provides data to send and feed back is applied to centralized every jumping feedback wireless communication system.
At first, control node and send resource allocation message to via node, via node is resolved from this resource allocation message and is obtained interface-free resources and relay resource, via node notifies the interface-free resources of resolving to transmitting terminal and receiving terminal, wherein, interface-free resources is used for the information interaction (comprising transfer of data and feedback) between via node and transmitting terminal or via node and transmitting terminal, and relay resource is used for the information interaction between via node and control node.
Then, as shown in Figure 2, the method comprises:
Step S202, in response to the data that transmitting terminal sends, via node feeds back respectively to transmitting terminal and control node, and the data that receive are sent to receiving terminal;
Step S204, in the situation that via node receives feedback from receiving terminal, via node feeds back to controlling node.
Below in conjunction with Fig. 3, the method is described in detail.
Fig. 3 is the flow chart of every jumping feedback HARQ when in the present embodiment, via node is centralized scheduling,
Step 301, transmitting terminal sends data to relay station on the interface-free resources of relay station notice;
Step 302, relay station receive the backward transmitting terminal of transmitting terminal data and send feedback;
Step 303, relay station send feedback after receiving the transmitting terminal data to the base station on relay resource;
Step 304, relay station receive the backward receiving terminal notice interface-free resources of transmitting terminal data success and send data on this interface-free resources;
Step 305, the backward relay station of receiving terminal receive data sends feedback;
Step 306, relay station receive the backward base station transmission of receiving terminal feedback feedback.
In above-mentioned flow process, comprise that also relay station receives the situation of the data failure of transmitting terminal, the first transmitting and receiving data of relay station unsuccessfully feeds back to transmitting terminal and base station, then the situation according to synchronous HARQ and asynchronous HARQ proceeds as follows respectively, is described in detail respectively below in conjunction with Fig. 4, Fig. 5.
As shown in Figure 4, be under the synchronous HARQ situation at the present embodiment, the transmitting terminal retransmission data need not relay station and reinforms idle message, and transmitting terminal receives that the failed feedback of relay station directly resends data afterwards on the interface-free resources of synchronous HARQ definition.
If retransmit still not success on the interface-free resources of synchronous HARQ definition, relay station unsuccessfully feeds back to the base station with transmitting and receiving data, request is for retransmit arranging the synchronous HARQ process, otherwise relay station will send to receive and successfully feed back to the new synchronous HARQ process of base station requests arrangement.
As shown in Figure 5, under the present embodiment was situation at asynchronous HARQ, the relay station transmitting and receiving data unsuccessfully fed back to the base station.The base station receives that the relay station receive data unsuccessfully feeds back rear Resources allocation and sends this resource allocation message to relay station, and relay station is resolved from the resource allocation message of its reception and obtained interface-free resources, and interface-free resources is notified to transmitting terminal.Transmitting terminal receive the relay station receive data unsuccessfully feed back and retransmit the notice interface-free resources after resend data on this interface-free resources.
Successfully receive the data of transmitting terminal at relay station after, relay station successfully feeds back (certainly also successfully feeding back to the transmitting terminal transmitting and receiving data) to the base station transmitting and receiving data, the expression transmitting terminal is completed to the HARQ process of relay station, request arranges new HARQ process, in response to this feedback information, the base station sends to relay station with corresponding resource allocation message.
Subsequently, relay station resolving resource assignment messages obtains interface-free resources and relay resource, and relay station notifies a part of interface-free resources to transmitting terminal, is used for transmitting terminal and sends new data, another part interface-free resources is notified to receiving terminal, be used for receiving terminal and receive the data that relay station sends.
After relay station receives the data success of transmitting terminal, send data to receiving terminal on above-mentioned another part interface-free resources, and to the regulation of not free sequencing between these two actions of base station feedback, the priority that namely has no time between step 303 and step 304.
In the situation that at first the failure of receiving terminal receive data unsuccessfully feeds back to the relay station transmitting and receiving data, then the situation according to synchronous HARQ and asynchronous HARQ proceeds as follows respectively.
Under the synchronous HARQ situation, the relay station retransmission data need not to reinform interface-free resources to receiving terminal, and relay station directly resends data on the interface-free resources of synchronous HARQ definition.
If retransmit also not success on the interface-free resources of predefined, relay station will send the receiving terminal receive data and unsuccessfully feed back to base station requests for retransmitting the synchronous HARQ process that arranges.
Under asynchronous HARQ situation, relay station unsuccessfully feeds back receive data and sends to base station, base station to receive after this feedback to distribute and send this resource allocation message to relay station for data re-transmitting arrangement respective resources.Relay station is resolved from the resource allocation message of its reception and is obtained interface-free resources and relay resource, and interface-free resources is notified to receiving terminal; Relay station resends data to receiving terminal on the interface-free resources of notice.
And after receiving terminal success receive data, transmitting and receiving data successfully feeds back to relay station, and relay station successfully feeds back the receiving terminal receive data and sends to the new HARQ process of base station requests arrangement, and two feedback signals can be identical or different.
Embodiment of the method two
In the present embodiment, a kind of method that provides data to send and feed back is applied to centralized end-to-end feedback wireless communication system, and the method is fit to asynchronous HARQ.
At first, control node and send resource allocation message to via node, via node is resolved from this resource allocation message and is obtained interface-free resources and relay resource, via node notifies the interface-free resources of resolving to transmitting terminal and receiving terminal, wherein, interface-free resources is used for the information interaction (comprising transfer of data and feedback) between via node and transmitting terminal or via node and transmitting terminal, and relay resource is used for the information interaction between via node and control node.
Then, as shown in Figure 6, the method comprises:
Step S602, via node will send to receiving terminal by the data that transmitting terminal sends;
Step S604, via node receives the feedback of receiving terminal, feeds back to controlling node and transmitting terminal respectively.
Below in conjunction with Fig. 7, said method is described in detail, the flow chart of end-to-end feedback HARQ when Fig. 7 is centralized scheduling comprises:
Step 701, transmitting terminal sends data to relay station on the interface-free resources of relay station notice;
Step 702, relay station receive the backward receiving terminal of transmitting terminal data success and send this data;
Step 703, the backward relay station of receiving terminal receive data sends feedback;
Step 704, relay station receives the backward base station feedback of feedback of receiving terminal;
Step 705, relay station receive the backward transmitting terminal feedback of feedback of receiving terminal.
In above-mentioned flow process, comprise that also relay station receives the situation of the data failure of transmitting terminal, relay station does not send any data or sends empty data to receiving terminal on the interface-free resources to the receiving terminal notice, the sky data received by receiving terminal or when in setting time was not received any data, transmitting and receiving data unsuccessfully fed back to relay station.
After relay station receives above-mentioned receive data and unsuccessfully feeds back, on relay resource, the transfer of data situation is fed back to the base station, the transfer of data situation comprises, transmitting terminal data transmission fails, or relay station data transmission fails, or receiving terminal success receive data.Feedback can realize with coding.
The base station is received the rear Resources allocation of relay station transfer of data situation feedback and is sent this resource allocation message to relay station, relay station is resolved from the resource allocation message of its reception and is obtained interface-free resources, and arranges transmitting terminal the transmission of data or relay station the transmission of data or new transfer of data again again according to relay station transfer of data situation.
For example, if relay station is the transmitting terminal data transmission fails to the transfer of data situation of base station feedback, the base station sends resource allocation message to relay station, the interface-free resources that relay station obtains the resolving resource assignment messages is notified to transmitting terminal and with the transfer of data situation and is sent to transmitting terminal, and transmitting terminal resends data according to the transfer of data situation that receives on interface-free resources.
If relay station is the relay station data transmission fails to the transfer of data situation of base station feedback, the base station sends resource allocation message to relay station, relay station notifies a part of interface-free resources that the resolving resource assignment messages obtains to transmitting terminal, be used for transmitting terminal and send new data, another part interface-free resources is notified to receiving terminal, be used for receiving terminal and again receive the failed data of relay station transmission.As shown in Figure 8, relay station sends failed flow chart for transmitting terminal sends successfully still.
If relay station is receiving terminal success receive data to the transfer of data situation of base station feedback, the base station sends resource allocation message to relay station, relay station notifies a part of interface-free resources that the resolving resource assignment messages obtains to transmitting terminal, be used for transmitting terminal and send new data, another part interface-free resources is notified to receiving terminal, be used for receiving terminal and receive the new data that relay station will receive.
In foregoing description, relay station is to base station feedback and regulation from not free sequencing to transmitting terminal that feed back between these two actions.
Embodiment of the method three
In the present embodiment, a kind of method that provides data to send and feed back is applied to centralized end-to-end feedback wireless communication system, and the method is fit to asynchronous HARQ.
At first, control node and send resource allocation message to via node, via node is resolved from this resource allocation message and is obtained interface-free resources and relay resource, via node notifies the interface-free resources of resolving to transmitting terminal and receiving terminal, wherein, interface-free resources is used for the information interaction (comprising transfer of data and feedback) between via node and transmitting terminal or via node and transmitting terminal, and relay resource is used for the information interaction between via node and control node.
Then, as shown in Figure 9, the method comprises:
Step S902, via node will send to receiving terminal by the data that transmitting terminal sends, and feed back to controlling node;
Step S904, via node receive the feedback of receiving terminal and feed back to controlling node and transmitting terminal respectively.
Be described in detail below in conjunction with 10 pairs of said methods of accompanying drawing, another flow chart of end-to-end feedback HARQ when Figure 10 is centralized scheduling comprises:
Step 1001, transmitting terminal sends data to relay station on the interface-free resources of relay station notice;
Step 1002, relay station receive the backward relay station of transmitting terminal data success and send feedback;
Step 1003, relay station receive the backward receiving terminal of transmitting terminal data success and send this data;
Step 1004, relay station receives the feedback of receiving terminal;
Step 1005, relay station is to base station feedback;
Step 1006, relay station feeds back to transmitting terminal.
Said method comprises that also relay station receives the situation of the data failure of transmitting terminal, 11 describes this situation in detail by reference to the accompanying drawings, and Figure 11 is that in the present embodiment, transmitting terminal sends the flow chart that the successful still relay station of data sends data failure.
After relay station receives the data failure of transmitting terminal, relay station does not send any data or sends empty data to receiving terminal on the interface-free resources to the receiving terminal notice, the sky data received by receiving terminal or when in setting time was not received any data, transmitting and receiving data unsuccessfully fed back to relay station.
After relay station receives above-mentioned receive data and unsuccessfully feeds back, on relay resource, the transfer of data situation is fed back to the base station, the transfer of data situation comprises the relay station data transmission fails, or the success of relay station transfer of data.Feedback can realize with coding.
After two data transfer situation feedbacks of relay station are received in the base station, Resources allocation also sends this resource allocation message to relay station, relay station is resolved from the resource allocation message of its reception and is obtained interface-free resources, and arrange transmitting terminal the transmission of data or relay station the transmission of data or new transfer of data again again according to relay station transfer of data situation, described in above-mentioned handling process such as embodiment of the method two.
Embodiment of the method four
In the present embodiment, a kind of method that provides data to send and feed back, be applied to the every jumping feedback of distributed scheduling wireless communication system, wherein distributed scheduling refers to control node and arranges resource to via node in advance, scheduling resource voluntarily as via node, use for via node subordinate node, no matter via node and its subordinate's node have or not transfer of data, and this resource all belongs to via node.The below describes the method in detail.
At first, control node and send resource allocation message to via node, via node is resolved this resource allocation message and is obtained and preserve scheduling resource voluntarily, wherein, a part voluntarily scheduling resource as interface-free resources, another part voluntarily scheduling resource as relay resource, via node notifies interface-free resources to transmitting terminal and receiving terminal, wherein, interface-free resources is used for the information interaction between via node and transmitting terminal or via node and transmitting terminal, and relay resource is used for the information interaction between via node and control node.
Then, as shown in figure 12, the method comprises:
Step S1202, via node will send to receiving terminal by the data that transmitting terminal sends, and feed back to transmitting terminal;
Step S1204, via node receives the feedback of receiving terminal.
Be described in detail below in conjunction with 13 pairs of said methods of accompanying drawing, the flow chart of every jumping feedback HARQ when Figure 13 is distributed scheduling comprises:
Step 1301, transmitting terminal sends data to relay station on the interface-free resources of relay station notice;
Step 1302, relay station feeds back to transmitting terminal;
Step 1303, relay station send the data that receive to receiving terminal;
Step 1304, receiving terminal feeds back to relay station.
Said method also comprises the situation that relay station receives the data failure of transmitting terminal, describes the flow process of data re-transmission in detail below in conjunction with accompanying drawing 14.
Relay station receives the data failure of transmitting terminal, relay station is dispatched the scheduling resource voluntarily of preserving, interface-free resources is notified again to transmitting terminal, and the transmitting terminal receive data that receives relay station resends data after unsuccessfully feeding back on this interface-free resources.
After relay station successfully receives the data of transmitting terminal, relay station is dispatched scheduling resource voluntarily, and relay station notifies a part of interface-free resources to transmitting terminal, is used for sending new data, another part interface-free resources is notified to receiving terminal, be used for receiving the data that relay station sends.
After receiving terminal receive data failure, transmitting and receiving data unsuccessfully feeds back to relay station, relay station reschedule after scheduling resource voluntarily with this voluntarily the interface-free resources in scheduling resource notify to receiving terminal; Relay station resends data to receiving terminal on the interface-free resources of notice.
And send to receive after receiving terminal success receive data and successfully feed back to relay station, relay station is received the new transfer of data (from the relay station to the receiving terminal) of arrangement after feedback.
By the present invention, the transfer of data between terminal can only need just can forward through relay station through the base station, compared with prior art, has shortened the path of transfer of data, has reduced data transmission delay.
Certainly, in embodiment of the method one to four, the relay station in wireless communication system can be one, can be also two, and the handling process of two relay stations is identical on principle with the handling process of a relay station, and this paper no longer repeats; And in embodiment of the method one to four, relay station can be carried at the data receiver feedback information on the interface-free resources message of notifying to transmitting terminal, namely can carry feedback information on interface-free resources or relay resource message, and the present invention does not limit this.For example, as shown in figure 15, in embodiment of the method four, relay station can contain the resource allocation message that data receiver feeds back by notification package to transmitting terminal.
obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and 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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (20)
1. data send and feedback method, are applied to centralized every jumping feedback wireless communication system, also comprise at least one via node, transmitting terminal, receiving terminal in described wireless communication system and control node, it is characterized in that, described method comprises:
In response to the data that described transmitting terminal sends, described via node feeds back respectively to described transmitting terminal and described control node, and the described data that will receive send to described receiving terminal;
In the situation that described via node receives feedback from described receiving terminal, described via node feeds back to described control node.
2. method according to claim 1, is characterized in that, further comprises:
Send resource allocation message by described control node to described via node, carry out the data transmission and feed back required resource to distribute described via node and described transmitting terminal.
3. method according to claim 2, is characterized in that, after described via node receives described resource allocation message, further comprises:
Described via node is resolved from described resource allocation message and is obtained interface-free resources and relay resource, the described interface-free resources that described via node will be resolved is notified to described transmitting terminal and described receiving terminal, wherein, described interface-free resources is used for the information interaction between described via node and described transmitting terminal or described via node and described receiving terminal, and described relay resource is used for the information interaction between described via node and described control node.
4. method according to claim 2, is characterized in that, in the situation that described via node receives the data failure from described transmitting terminal, further comprises:
After the feedback of described transmitting terminal reception from described via node, resend described data to described via node on the interface-free resources of synchronous hybrid automatic repeat request definition; Or
After the feedback of described control node reception from described via node, described via node is redistributed resource; Described via node notifies deallocated resources to described transmitting terminal; Described transmitting terminal resends described data according to deallocated resources.
5. method according to claim 2, is characterized in that, in the situation that the failure of described receiving terminal receive data, described via node further comprises after receiving the feedback that sends from described receiving terminal:
Described via node sends described data to described receiving terminal again on the interface-free resources of synchronous hybrid automatic repeat request definition; Or
Receive the feedback of described via node transmission at described control node after, described via node is redistributed resource, the described resource that described via node utilization is redistributed resends described data to described receiving terminal.
6. data send and feedback method, are applied to centralized end-to-end feedback wireless communication system, and described wireless communication system comprises at least one via node, transmitting terminal, receiving terminal and controls node, it is characterized in that, described method comprises:
Described via node will send to described receiving terminal by the data that described transmitting terminal sends;
Described via node receives the feedback of described receiving terminal, feeds back to described control node and described transmitting terminal respectively.
7. method according to claim 6, is characterized in that, further comprises:
Send resource allocation message by described control node to described via node, carry out the data transmission and feed back required resource to distribute described via node and described transmitting terminal.
8. method according to claim 7, is characterized in that, after described via node receives described resource allocation message, further comprises:
Described via node is resolved from described resource allocation message and is obtained interface-free resources and relay resource, the described interface-free resources that described via node will be resolved is notified to described transmitting terminal and described receiving terminal, wherein, described interface-free resources is used for the information interaction between described via node and described transmitting terminal or described via node and described receiving terminal, and described relay resource is used for the information interaction between described via node and described control node.
9. method according to claim 7, is characterized in that, in the situation that described via node receives the described data failure that sends from described transmitting terminal, further comprises:
Described via node sends empty data or does not send data to described receiving terminal;
Described via node receives the feedback of described receiving terminal;
Described via node feeds back to described control node, and receives the resource that described control node distributes;
The described resource notification that described via node will distribute is given described transmitting terminal, resends described data for described transmitting terminal.
10. method according to claim 7, is characterized in that, in the situation that described receiving terminal receives described data failure, further comprises:
Described via node feeds back to described control node;
Described via node receives the resource that described control node distributes;
The described resource notification that described via node will distribute is given described receiving terminal, again receives described data for described receiving terminal.
11. data send and feedback method, be used for centralized end-to-end feedback wireless communication system, wherein, described wireless communication system comprises at least one via node, transmitting terminal, receiving terminal and controls node, it is characterized in that, described method comprises:
Described via node will send to described receiving terminal by the data that described transmitting terminal sends, and feed back to described control node;
Described via node receives the feedback of described receiving terminal and feeds back to described control node and described transmitting terminal respectively.
12. method according to claim 11 is characterized in that, further comprises:
Send resource allocation message by described control node to described via node, carry out the data transmission and feed back required resource to distribute described via node and described transmitting terminal.
13. method according to claim 12 is characterized in that, after described via node receives described resource allocation message, further comprises:
Described via node is resolved from described resource allocation message and is obtained interface-free resources and relay resource, the described interface-free resources that described via node will be resolved is notified to described transmitting terminal and described receiving terminal, wherein, described interface-free resources is used for the information interaction between described via node and described transmitting terminal or described via node and described receiving terminal, and described relay resource is used for the information interaction between described via node and described control node.
14. method according to claim 11 is characterized in that, in the situation that described via node receives the described data failure that sends from described transmitting terminal, further comprises:
Described via node sends empty data or does not send data to described receiving terminal;
Described via node receives the feedback of described receiving terminal;
Described via node feeds back to described control node, and receives the resource that described control node distributes;
The described resource notification that described via node will distribute is given described transmitting terminal, resends described data for described transmitting terminal.
15. method according to claim 11 is characterized in that, in the situation that described receiving terminal receives described data failure, further comprises:
Described via node feeds back to described control node;
Described via node receives the resource that described control node distributes;
The described resource notification that described via node will distribute is given described receiving terminal, again receives described data for described receiving terminal.
16. data send and feedback method, be used for the every jumping feedback of distributed scheduling wireless communication system, wherein, described wireless communication system comprises at least one via node, transmitting terminal, receiving terminal and controls node, it is characterized in that, said method comprising the steps of:
Described via node will send to described receiving terminal by the data that described transmitting terminal sends, and feed back to described transmitting terminal;
Described via node receives the feedback of described receiving terminal.
17. method according to claim 16 is characterized in that, further comprises:
Send resource allocation message by described control node to described via node, send and feed back required resource to distribute described via node and described transmitting terminal to carry out data, described via node is preserved and is resolved the scheduling resource voluntarily that described resource allocation information obtains.
18. method according to claim 17 is characterized in that, after described via node receives described resource allocation message, further comprises:
Described via node obtains interface-free resources and relay resource from described scheduling resource voluntarily, described via node notifies described interface-free resources to described transmitting terminal and described receiving terminal, wherein, described interface-free resources is used for the information interaction between described via node and described transmitting terminal or described via node and described receiving terminal, and described relay resource is used for the information interaction between described via node and described control node.
19. method according to claim 17 is characterized in that, in the situation that described via node receives the described data failure from described transmitting terminal, described method further comprises:
Described via node feeds back to described transmitting terminal, and the interface-free resources in described scheduling resource is voluntarily notified to described transmitting terminal, resends described data for described transmitting terminal.
20. method according to claim 17 is characterized in that, in the situation that described receiving terminal receives described data failure, further comprises:
Described via node receives the feedback of described receiving terminal;
Described via node notifies the interface-free resources in described scheduling resource voluntarily to described receiving terminal, again receives described data for described receiving terminal.
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| CN108347310B (en) * | 2017-01-25 | 2020-04-14 | 中国移动通信有限公司研究院 | A real-time retransmission method, real-time retransmission system and related device of packet data |
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| Title |
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| the Relay Task Group.Multihop Relay Specification.《IEEE P802.16j：Draft Amendment to IEEE Standard for Local and metropolitan area networks Part 16:Air Interface for Fixed and Mobile Broadband Wireless Access Systems》.IEEE,2008,第6节. * |
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