CN101924609B

CN101924609B - Processing method of uplink data in coordinated multipoint transmission and related device

Info

Publication number: CN101924609B
Application number: CN 200910086988
Authority: CN
Inventors: 高有军; 姜大洁; 胡臻平; 崔春风
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2009-06-12
Filing date: 2009-06-12
Publication date: 2013-03-13
Anticipated expiration: 2029-06-12
Also published as: CN101924609A

Abstract

The invention discloses a processing method of uplink data in coordinated multipoint transmission and a related device, aiming to solve the problems of larger load of a transmission interface between a serving base station and a coordinating base station and longer time spent in processing uplink data by the serving base station in the prior art. The method comprises the following steps: receiving the uplink data sent from a mobile terminal by the serving base station, and sending feedback information used for confirming that the uplink data are received accurately to the mobile terminal when being capable of demodulating decodes for the received uplink data accurately; and otherwise, acquiring the related information of the uplink data which is sent by the mobile terminal and received by the coordinating base station by the serving base station from the coordinating base station when being incapable of demodulating decodes for the received uplink data accurately, and sending feedback information to the mobile terminal based on the received related information of the uplink data and the uplink data sent by the mobile terminal and received thereby.

Description

The processing method of uplink data in coordinated multipoint transmission and relevant apparatus

Technical field

The present invention relates to wireless communication technology field, relate in particular to a kind of processing method and relevant apparatus of uplink data in coordinated multipoint transmission.

Background technology

In existing mobile communication system, because the adjacent area disturbs, user's the communication quality that is in the cell edge position is relatively poor.In order to improve the communication quality of Cell Edge User, prior art has proposed cooperative multipoint transmission (CoMP, Coordinated multi-point transmission/reception) technology motion, the basic functional principle of this technology is to being in the relatively poor user of cell edge communication quality, the common transfer of data that participates in this user of this user's Serving cell and the neighbor cell of Serving cell, to improve the communication quality of Cell Edge User, wherein participate in the neighbor cell of the Serving cell of Cell Edge User transfer of data is called as cooperation cell.

Please refer to accompanying drawing 1, be the schematic diagram of upstream data handling principle in the CoMP technology.What participate in cooperative transmission can be the different districts that same base station covers, and also can be the residential quarter of different base station covering.When the residential quarter of different base station coverage participates in cooperative transmission, coverage is that the base station of Serving cell is called as serving BS, coverage is that the base station of cooperation cell is called as cooperative base station, the corresponding a plurality of cooperative base station of a common portable terminal, more simple and clear in order to describe, accompanying drawing 1 is 1 serving BS take eNB1 as subscriber terminal equipment UE, eNB2 is that the cooperative base station of UE1 is the processing procedure that example is introduced upstream data in the cooperative transmission, other cooperative base station are similar to eNB2 to the reciprocal process between the serving BS eNB1, here no longer describe in detail.Please refer to accompanying drawing 2, the groundwork flow process of the upstream data cooperative transmission that relates to for the CoMP motion:

Step 200, serving BS eNB1 and cooperative base station eNB2 receive the upstream data that UE1 sends;

Step 201, cooperative base station eNB2 sends to serving BS eNB1 with the upstream data that receives;

Step 202, the upstream data that the cooperative base station eNB2 that serving BS eNB1 will receive in upstream data that the UE1 that receives in step 200 sends and step 201 sends merges processing;

Step 203, when the upstream data of serving BS eNB1 after can merging processing to step 202 carries out correct demodulation coding, send ACK message to UE1, comprise the uplink transmission resource (UL grant) that HARQ process (Hybrid Automatic Repeat Request Process) identified and distributed to UE1 in this ACK message, wherein the HARQ process identification (PID) is used to indicate UE1 and sends data in the time slot of correspondence; When the upstream data after can not being combined processing carries out correct demodulation coding, send NACK message.

UE1 can be on the corresponding time slot of the interior HARQ process identification (PID) of next round trip cycle (RTT, Round Trip Time) after receiving ACK message, and the uplink transmission resource UL grant that uses eNB1 to distribute sends new upstream data to eNB1; If the feedback message that UE1 receives is NACK message, then next RTT in the cycle the corresponding time slot of HARQ process identification (PID) use original uplink transmission resource to resend the data that sent in the step 200.

Because generally, the common data collaborative transmission that participates in portable terminal of a plurality of cooperative base station is arranged, so the upstream data that sends of the UE1 that each cooperative base station sends and receives to serving BS in the step 201 will take the transfer resource between a large amount of base stations.

In addition, regulation according to LTE R8 standard, the RTT cycle is 8ms, serving BS need to send the ACL/NACK feedback message to UE in the 4ms after UE sends data, in existing CoMP scheme, before the step 202 of serving BS in carrying out accompanying drawing 2, can wait for the user uplink data that cooperative base station is sent, if owing to reasons such as the transmission of data time delay between the base station are larger, the serving BS receive data and to data merge process the time expend surpass 4s(namely can not the 4s UE sends data after in to UE transmission feedback message), will so that the data re-transmission time lengthening of UE, further affect user's communication quality.

Summary of the invention

The embodiment of the invention provides a kind of processing method of uplink data in coordinated multipoint transmission, processes the upstream data long problem that expends time in order to solve in the prior art between the serving BS and cooperative base station the large and serving BS of coffret load.

Accordingly, the embodiment of the invention also provides a kind for the treatment of system of uplink data in coordinated multipoint transmission, and a kind of base station that can realize the processing method of above-mentioned uplink data in coordinated multipoint transmission.

The technical scheme that the embodiment of the invention provides is as follows:

A kind of processing method of uplink data in coordinated multipoint transmission comprises: the upstream data that the serving BS mobile terminal receive is sent; And in the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; And in the time can not carrying out correct demodulation coding to the upstream data that receives, send the notification message that can not carry out to upstream data correct demodulation coding for the notification service base station to cooperative base station; Demodulation coding result corresponding to described upstream data that the cooperative base station that serving BS reception cooperative base station is sent according to described notification message receives; Serving BS sends to described portable terminal and to be used for the feedback message of confirming that upstream data has been correctly received after receiving cooperative base station and sending demodulation coding result corresponding to upstream data.

A kind of cooperative multicast system comprises the serving BS of portable terminal and participates in the cooperative base station of cooperative transmission that wherein: serving BS is used for the upstream data that mobile terminal receive is sent; In the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal, in the time can not carrying out correct demodulation coding to the upstream data that receives, send the notification message that can not carry out to upstream data correct demodulation coding for the notification service base station to cooperative base station; And receive demodulation coding result corresponding to described upstream data that cooperative base station is sent according to described notification message; After receiving cooperative base station and sending demodulation coding result corresponding to upstream data, send to described portable terminal and to be used for the feedback message of confirming that upstream data has been correctly received; Cooperative base station is used for the upstream data that mobile terminal receive is sent, and before receiving the notification message that serving BS sends, forbids sending described upstream data or demodulation coding result corresponding to upstream data to serving BS.

A kind of base station for cooperative multipoint transmission comprises: the first receiving element is used for the upstream data that mobile terminal receive is sent; The first feedback unit is used in the time can carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received; Notification unit is used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to cooperative base station to be used for the notification message that correct demodulation coding can not be carried out to upstream data in the notification service base station; The second receiving element is used for receiving demodulation coding result corresponding to described upstream data that cooperative base station is sent according to described notification message; The second feedback unit is used for after the second receiving element receives cooperative base station and sends demodulation coding result corresponding to upstream data, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received; Transmitting element was used for before being used for of receiving that serving BS sends, the notification service base station can not carry out the notification message of correct demodulation coding to upstream data, forbade sending to other base stations upstream data or demodulation coding result corresponding to upstream data; After receiving the notification message that serving BS sends, send demodulation coding result corresponding to upstream data to serving BS.

A kind of processing method of uplink data in coordinated multipoint transmission comprises: the upstream data that the serving BS mobile terminal receive is sent; And in the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; And in the time can not carrying out correct demodulation coding to the upstream data that receives, send the notification message that can not carry out to upstream data correct demodulation coding for the notification service base station to cooperative base station; The described upstream data that the described cooperative base station that serving BS reception cooperative base station is sent according to described notification message receives; And the upstream data that cooperative base station is sent and the upstream data that self receives merge processing, and the upstream data after can being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received; And the upstream data after can not being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data is not correctly received.

A kind of cooperative multicast system comprises the serving BS of portable terminal and participates in the cooperative base station of cooperative transmission that wherein: serving BS is used for the upstream data that mobile terminal receive is sent; In the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; In the time can not carrying out correct demodulation coding to the upstream data that receives, send the notification message that can not carry out to upstream data correct demodulation coding for the notification service base station to cooperative base station; And receive the described upstream data that cooperative base station is sent according to described notification message; And the upstream data that cooperative base station is sent and the upstream data that self receives merge processing, and the upstream data after can being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received; And the upstream data after can not being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data is not correctly received; Cooperative base station is used for the upstream data that mobile terminal receive is sent, and before receiving the notification message that serving BS sends, forbids sending described upstream data or demodulation coding result corresponding to upstream data to serving BS.

A kind of base station for cooperative multipoint transmission comprises: the first receiving element is used for the upstream data that mobile terminal receive is sent; The first feedback unit is used in the time can carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received; Notification unit is used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to cooperative base station to be used for the notification message that correct demodulation coding can not be carried out to upstream data in the notification service base station; The second receiving element is used for receiving the described upstream data that cooperative base station is sent according to described notification message; Merge processing unit, be used for the upstream data that upstream data that the second receiving element is received and the first receiving element receive and merge processing; The second feedback unit when carrying out correct demodulation coding for the upstream data after can being combined processing unit merging processing, sends the feedback message that has been correctly received for the affirmation upstream data to described portable terminal; The 3rd feedback unit when carrying out correct demodulation coding for the upstream data after can not being combined processing unit merging processing, sends the feedback message that is not correctly received for the affirmation upstream data to described portable terminal; Transmitting element was used for before being used for of receiving that serving BS sends, the notification service base station can not carry out the notification message of correct demodulation coding to upstream data, forbade sending to other base stations upstream data or demodulation coding result corresponding to upstream data; After receiving serving BS and sending described notification message, send upstream data to serving BS.

A kind of processing method of uplink data in coordinated multipoint transmission, comprise: the upstream data that the serving BS mobile terminal receive is sent, and in the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; And in the time can not carrying out correct demodulation coding to the upstream data that receives, be used for can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends message according to what cooperative base station was sent, can carry out to described upstream data the cooperative base station request demodulation coding result of correct demodulation coding at least one; Serving BS receives the demodulation coding result that cooperative base station is sent according to described request, and after receiving cooperative base station and sending the demodulation coding result, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received.

A kind of cooperative multicast system, the cooperative base station that comprises serving BS and the participation cooperative transmission of portable terminal, wherein: serving BS, be used for the upstream data that mobile terminal receive is sent, in the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; In the time can not carrying out correct demodulation coding to the upstream data that receives, be used for can the described cooperative base station in notification service base station carry out correct demodulation coding to described upstream data message according to what cooperative base station was sent, can carry out to described upstream data the cooperative base station request demodulation coding result of correct demodulation coding at least one; Receive the demodulation coding result that cooperative base station is sent according to described request; After receiving cooperative base station and sending the demodulation coding result, send to described portable terminal and to be used for the feedback message of confirming that upstream data has been correctly received; Cooperative base station, be used for the upstream data that mobile terminal receive is sent, and after to the upstream data demodulation coding that receives, send to serving BS and to be used for correct demodulation coding be carried out in notification service base station self can to the upstream data that described portable terminal sends message; Before the request that receives serving BS, forbid sending described upstream data or demodulation coding result corresponding to upstream data to serving BS.

A kind of base station for cooperative multipoint transmission comprises: the first receiving element is used for the upstream data that mobile terminal receive is sent; The first feedback unit is used in the time can carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received; The second receiving element be used for to receive can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends the message that is used for that other base stations send; Request unit, be used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element receives, according to the message that the second receiving element receives, can carry out to the upstream data that described portable terminal sends other base station requests demodulation codings result of correct demodulation coding at least one; The 3rd receiving element is used for receiving the demodulation coding result that send according to the request of request unit other base stations; The second feedback unit is used for after the 3rd receiving element receives the demodulation coding result, sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received; Can the first transmitting element be used for sending the message that carry out correct demodulation coding for notification service base station self to the upstream data that portable terminal sends to serving BS; The second transmitting element was used for before the request that receives serving BS, forbade sending upstream data or demodulation coding result corresponding to upstream data to serving BS; After the request that receives serving BS, send demodulation coding result corresponding to upstream data to serving BS.

A kind of processing method of uplink data in coordinated multipoint transmission, comprise: the upstream data that the serving BS mobile terminal receive is sent, and in the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; And in the time can not carrying out correct demodulation coding to the upstream data that receives, be used for can the described cooperative base station in notification service base station carry out correct demodulation coding to described upstream data message according to what cooperative base station was sent, when definite all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, the upstream data that receives to the described cooperative base station of cooperative base station request; Serving BS merges processing to cooperative base station according to the described request upstream data of sending and the upstream data that self receives, and the upstream data after can being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received; And the upstream data after can not being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data is not correctly received.

A kind of cooperative multicast system, the cooperative base station that comprises serving BS and the participation cooperative transmission of portable terminal, wherein: serving BS, be used for the upstream data that mobile terminal receive is sent, in the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; In the time can not carrying out correct demodulation coding to the upstream data that receives, be used for can the described cooperative base station in notification service base station carry out correct demodulation coding to described upstream data message according to what cooperative base station was sent, when definite all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, the upstream data that receives to the described cooperative base station of cooperative base station request; Cooperative base station is merged processing according to the described request upstream data of sending and the upstream data that self receives, and the upstream data after can being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received; And the upstream data after can not being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data is not correctly received; Cooperative base station, be used for the upstream data that mobile terminal receive is sent, and after to the upstream data demodulation coding that receives, send to serving BS and to be used for correct demodulation coding be carried out in notification service base station self can to the upstream data that described portable terminal sends message; Before the request that receives serving BS, forbid sending described upstream data or demodulation coding result corresponding to upstream data to serving BS.

A kind of base station for cooperative multipoint transmission comprises: the first receiving element is used for the upstream data that mobile terminal receive is sent; The first feedback unit is used in the time can carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received; The second receiving element be used for to receive can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends the message that is used for that cooperative base station sends; Request unit, be used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element receives, the message that receives according to the second receiving element, when definite all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, the upstream data that receives to the described cooperative base station of cooperative base station request; The 3rd receiving element is used for receiving the upstream data that cooperative base station is sent according to the request of request unit; Merge processing unit, be used for the upstream data that upstream data that the 3rd receiving element is received and the first receiving element receive and merge processing; The second feedback unit when carrying out correct demodulation coding for the upstream data after can being combined processing unit merging processing, sends the feedback message that has been correctly received for the affirmation upstream data to described portable terminal; The 3rd feedback unit when carrying out correct demodulation coding for the upstream data after can not being combined processing unit merging processing, sends the feedback message that is not correctly received for the affirmation upstream data to described portable terminal; Can the first transmitting element be used for sending the message that carry out correct demodulation coding for notification service base station self to the upstream data that portable terminal sends to serving BS; The second transmitting element was used for before the request that receives serving BS, forbade sending upstream data or demodulation coding result corresponding to upstream data to serving BS; After the request that receives serving BS, send upstream data to serving BS.

The embodiment of the invention, sends for the feedback message of confirming that upstream data is correctly received to portable terminal when the upstream data that can receive self carries out correct demodulation coding by serving BS; In the time can not carrying out correct demodulation coding to the upstream data that receives, obtain the relevant information of the upstream data that described portable terminal that described cooperative base station receives sends from cooperative base station, and according to the relevant information of the upstream data that acquires with self receive the upstream data that portable terminal sends, send feedback message to portable terminal, saved cooperative base station to the transfer resource between the base station that serving BS transmission upstream data takies, meanwhile, having saved the wait cooperative base station sends upstream data and is combined the time that processing takies.

Description of drawings

Fig. 1 is the schematic diagram of upstream data handling principle in the existing CoMP technology motion;

Fig. 2 is the groundwork flow chart of the upstream data cooperative transmission that relates to of CoMP motion;

Fig. 3 is the main realization principle flow chart of the embodiment of the invention;

Fig. 4 is the flow chart of the processing method of the uplink data in coordinated multipoint transmission that proposes of the embodiment of the invention;

Fig. 5 is the flow chart of the processing method of the another kind of uplink data in coordinated multipoint transmission that proposes of the embodiment of the invention;

The first that Fig. 6 provides for the embodiment of the invention is used for the structural representation of the base station of cooperative multipoint transmission;

The second that Fig. 7 provides for the embodiment of the invention is used for the structural representation of the base station of cooperative multipoint transmission;

The third structural representation for the base station of cooperative multipoint transmission that Fig. 8 provides for the embodiment of the invention;

The 4th kind of structural representation that is used for the base station of cooperative multipoint transmission that Fig. 9 provides for the embodiment of the invention.

Embodiment

Because in existing CoMP motion, at the communication quality of serving BS according to portable terminal, judge need to carry out cooperative transmission to portable terminal after, at predetermined cooperative transmission in the duration, the upstream data that the portable terminal no matter whether serving BS can receive self sends carries out correct demodulation coding to be processed, need all to wait for that cooperative base station sends the upstream data that this portable terminal of receiving sends, and the upstream data that cooperative base station is sent and the upstream data that self receives merge processing, and the upstream data after being combined again carries out demodulation coding.

When the upstream data that the embodiment of the invention sends by the portable terminal that can receive self at serving BS carries out correct demodulation coding processing, with carrying be send portable terminal being used for of distributing next time transmitting uplink data resource that upstream data uses be used for confirm that the feedback message that data are correctly received sends to portable terminal, and when the upstream data that the portable terminal that serving BS can not receive self sends carries out correct demodulation coding processing, from cooperative base station, obtain again upstream data, rather than cooperative base station is behind the upstream data that receives the portable terminal transmission, all need this upstream data is offered serving BS, to solve the more problem of transfer resource that takies in the existing scheme between serving BS and the cooperative base station.

Be explained in detail to the main realization principle of embodiment of the invention technical scheme, embodiment and to the beneficial effect that should be able to reach below in conjunction with each accompanying drawing.

When the upstream data that the different districts in same base station range sends portable terminal is processed, coverage is that the base station of Serving cell and cooperation cell merges processing to the upstream data that Serving cell and cooperation cell receive, and sends feedback message according to merging the result who processes to portable terminal.Do not need like this upstream data of transmission portable terminal between each base station, thereby do not have the problem that takies the transfer resource between the base station in the background technology.The application relates generally to Serving cell and cooperation cell is the situation of different base station coverage.

As shown in Figure 3, the main realization principle process of the embodiment of the invention is as follows:

Step 10, the upstream data that the serving BS mobile terminal receive is sent;

Step 20, serving BS send for the feedback message of confirming that upstream data is correctly received to described portable terminal in the time can carrying out correct demodulation coding to the upstream data that receives in the step 10;

Step 30, serving BS obtain the relevant information of the upstream data that described portable terminal that described cooperative base station receives sends again from cooperative base station in the time can not carrying out correct demodulation coding to the upstream data that receives in the step 10, enter step 40;

The relevant information of the upstream data that step 40, serving BS acquire according to step 30 and self receive the upstream data that portable terminal sends sends feedback message to described portable terminal.

The below will according to foregoing invention principle of the present invention, introduce an embodiment and come the main realization principle of the inventive method is explained in detail and illustrates in detail.

Embodiment one

Example in the background technology is as example, eNB1 is the serving BS of subscriber terminal equipment UE 1, and eNB2 is the cooperative base station of this subscriber terminal equipment UE 1, please refer to accompanying drawing 4, the flow chart of the processing method of the uplink data in coordinated multipoint transmission that proposes for present embodiment, its concrete processing procedure is as follows:

Step 400, serving BS eNB1 and cooperative base station eNB2 receive respectively the upstream data UL data1 that UE1 sends at time slot corresponding to HARQ process identification (PID) HARQ-ID1, and described upstream data is that portable terminal is sent according to the pre-assigned transmitting uplink data resource of eNB1;

Step 401, serving BS eNB1 judges whether that the upstream data UL data1 that can receive self carries out correct demodulation coding, when determining to carry out correct demodulation coding to this upstream data, no longer wait for the upstream data that UE1 that eNB2 that cooperative base station eNB2 sends receives sends, but enter step 402, in the time can not carrying out correct demodulation coding to this upstream data, enter step 403;

Step 402, serving BS eNB1 sends to UE1 and is used for the ACK message that the affirmation upstream data is correctly received, be included as being used for next time in the employed transmitting uplink data resource of time slot transmission upstream data UL Grant corresponding to HARQ-ID1, processing procedure end of UE1 distribution in the described ACK message;

Step 403, serving BS eNB1 sends to cooperative base station eNB2 and is used for the notification message that notification service base station eNB 1 can not be carried out to upstream data correct demodulation coding, the sign that comprises portable terminal in the described notification message, portable terminal sends HARQ process identification (PID) corresponding to time slot that described upstream data uses, participate in the cell ID (Cell ID) of cooperation, and other information such as redundancy versions (Redundancy version), described request message can be NACK message, behind the cooperative base station upstream data that portable terminal sends in receiving step 400, unless receive the above-mentioned notification message of serving BS, otherwise upstream data do not sent to serving BS;

Step 404, cooperative base station eNB2 is according to the sign of the portable terminal in the notification message that receives in the step 403, HARQ process identification (PID) and cell ID find and self receive and the relevant information of the upstream data that the mobile terminal UE 1 of storage sends at the time slot of HARQ process identification (PID), and the relevant information of the upstream data that finds sent to serving BS eNB1, after wherein cooperative base station eNB2 receives the upstream data of UE1 transmission in step 400, following 2 kinds of processing schemes can be arranged: (1) only keeps the original physical layer bit stream of upstream data itself, is left intact; (2) in the time can carrying out correct demodulation coding to the upstream data that receives, keep the result that demodulation coding obtains, the demodulation coding result can be medium access control layer protocol data cell (MAC PDU, Media Access Control Protocol Data Unit), also can be extended formatting; Otherwise the original physical layer bit stream that still keeps upstream data itself.

When cooperative base station eNB2 adopted the first processing scheme or adopt the second processing scheme demodulation coding incorrect, the upstream data relevant information was upstream data itself; Correctly during demodulation coding, the relevant information of upstream data is the MAC PDU that demodulation coding obtains in adopting first scheme.

Step 405, the upstream data that serving BS eNB1 sends according to the cooperative base station eNB2 that receives the upstream data relevant information of sending and the UE1 that self receives, send feedback message to UE1, be specially: serving BS eNB1 in the upstream data relevant information that receives when upstream data being carried out MAC PDU that demodulation coding obtains, be used for the feedback message ACK that the affirmation upstream data is correctly received to the UE1 transmission, be included as being used for next time at the employed transmitting uplink data resource of time slot transmission upstream data UL Grant corresponding to HARQ-ID1 of UE1 distribution among this feedback message ACK;

When serving BS eNB1 is the original physical layer bit stream of the upstream data that sends of UE1 that cooperative base station eNB2 receives itself in the relevant information of the upstream data of asking from cooperative base station eNB2, to request to upstream data and the upstream data sent of the portable terminal that self receives merge, and the upstream data after can being combined is when carrying out correct demodulation coding, send for the feedback message ACK that confirms that upstream data is correctly received to UE1, be included as being used for next time in the employed transmitting uplink data resource of time slot transmission upstream data UL Grant corresponding to HARQ-ID1, processing procedure end of UE1 distribution among this feedback message ACK; Otherwise, if serving BS eNB1 to request to upstream data and after the upstream data sent of the portable terminal that self receives merges, when the upstream data after can not being combined carries out correct demodulation coding, send for the feedback message NACK that confirms that upstream data is not correctly received to UE1, processing procedure finishes.

In the scheme that the embodiment of the invention proposes, when the upstream data that serving BS is sent at the portable terminal that can receive self carries out correct demodulation coding, need not the upstream data of waiting for that cooperative base station is sent, and need not the upstream data that upstream data that self is received and cooperative base station send and merge processing, just can send feedback message to portable terminal; Cooperative base station unless obtain the request of serving BS, otherwise does not send to serving BS with upstream data after receiving the upstream data that portable terminal sends.Adopt such scheme to save on the one hand cooperative base station to the transfer resource between the base station that serving BS transmission upstream data takies; On the other hand, saved and waited for that cooperative base station sends upstream data and is combined the time that processing takies, reduced because the overtime portable terminal that causes of serving BS processing retransmits the probability of upstream data.

Embodiment two

In order to reduce in embodiment one, when the upstream data UL data1 that serving BS eNB1 sends at time slot corresponding to HARQ-ID1 at the UE1 that can not receive self carries out correct demodulation coding, eNB2 sends a request message to cooperative base station, and the relevant information that receives the upstream data that cooperative base station eNB2 sends according to request message load pressure that the X2 interface between serving BS eNB1 and the cooperative base station eNB2 is caused, present embodiment has proposed another kind of serving BS when the upstream data of the portable terminal transmission that can not receive self carries out correct demodulation coding, obtain the scheme of upstream data relevant information from cooperative base station, detailed process please refer to accompanying drawing 5

Step 500, serving BS eNB1 and cooperative base station eNB2 receive respectively the upstream data UL data1 that UE1 sends at time slot corresponding to HARQ process identification (PID) HARQ-ID1, and described upstream data is that portable terminal is sent according to the pre-assigned transmitting uplink data resource of eNB1;

Step 501, serving BS eNB 1 judges whether that the upstream data UL data1 that can receive self carries out correct demodulation coding, when determining to carry out correct demodulation coding to this upstream data, no longer wait for the upstream data that UE1 that eNB2 that cooperative base station eNB2 sends receives sends, but enter step 502, in the time can not carrying out correct demodulation coding to this upstream data, enter step 503;

Step 502, serving BS eNB1 sends to UE1 and is used for the ACK message that the affirmation upstream data is correctly received, be included as being used for next time in the employed transmitting uplink data resource of time slot transmission upstream data UL Grant corresponding to HARQ-ID1, processing procedure end of UE1 distribution in the described ACK message;

Step 503, serving BS eNB1 is used for can notification service base station eNB 1 described cooperative base station eNB2 carry out correct demodulation coding to the upstream data that described portable terminal sends message according to what cooperative base station eNB2 sent, relevant information to cooperative base station eNB2 request upstream data, after wherein above-mentioned announcement information is the cooperative base station eNB2 upstream data that UE1 sends in receiving step 500, determine and self can carry out the upstream data that UE1 sends sending behind the correct demodulation coding, in the present embodiment, behind the cooperative base station upstream data that portable terminal sends in receiving step 500, need not needs upstream data is sent to serving BS as the technology in the existing motion.Be specially, the notification message that serving BS eNB1 sends according to cooperative base station eNB2, to the cooperative base station request demodulation coding result that can carry out to the upstream data that UE1 in the step 500 sends correct demodulation coding, and after asking to arrive the demodulation coding result, enter step 504; When the notification message of sending according to cooperative base station knows that all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, the upstream data that the UE1 that receives to the described cooperative base station of at least one cooperative base station request sends, the mode of request upstream data has multiple, for example, serving BS eNB1 sends to cooperative base station eNB2 and is used for obtaining UE1 at the request message of the relevant information of the upstream data of time slot transmission corresponding to HARQ-ID1, the sign UE1 that comprises portable terminal in the described request message, portable terminal sends HARQ process identification (PID) corresponding to time slot that described upstream data uses, and the cell ID that participates in cooperation, enter step 505;

Step 504, serving BS eNB1 sends to UE1 and is used for the ACK message that the affirmation upstream data is correctly received, be included as being used for next time in the employed transmitting uplink data resource of time slot transmission upstream data UL Grant corresponding to HARQ-ID1, handling process end of UE1 distribution in the described ACK message;

Step 505, the upstream data that the upstream data that the cooperative base station eNB2 that serving BS eNB1 will ask sends and the UE1 that self receives send merges, and the upstream data after can being combined is when carrying out correct demodulation coding, send for confirming that upstream data is correctly received feedback message ACK to portable terminal, be included as being used for that portable terminal distributes in this feedback message sends the employed transmitting uplink data resource of upstream data UL Grant next time, and handling process finishes; Otherwise, serving BS eNB1 is after the upstream data that the upstream data that the cooperative base station eNB2 that will ask sends and the UE1 that self receives send merges, when the upstream data after can not being combined carries out correct demodulation coding, send for the feedback message NACK that confirms that upstream data is not correctly received to portable terminal, handling process finishes.Present embodiment is only there to be a cooperative base station eNB2 to be introduced as example, the notification message that serving BS is sent according to cooperative base station in step 503 is known when all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, can be to a plurality of cooperative base station request upstream datas, and to from a plurality of cooperative base station requests to upstream data and the upstream data sent of the UE1 that self receives merge.

In the present embodiment, cooperative base station after receiving the up and down data that portable terminal sends, judge can carry out correct demodulation coding to upstream data after, the notification service base station; When the upstream data that serving BS is sent at the portable terminal that can not receive self carries out correct demodulation coding, can be from can the upstream data that identical time slot sends carries out the cooperative base station of correct demodulation coding, obtaining the demodulation coding result to this portable terminal, compare with the scheme among the embodiment one, when the upstream data that serving BS is sent at the portable terminal that can not receive self carries out correct demodulation coding, can be more purposive to cooperative base station request demodulation coding result, thereby saved port load pressure between serving BS and cooperative base station.

When the upstream data that serving BS is sent at the portable terminal that can not receive self carries out correct demodulation coding, the mode that in embodiment one and embodiment two, provides, can also adopt other modes to obtain the relevant information of upstream data from cooperative base station.

Correspondingly, the embodiment of the invention also provides a kind of base station for cooperative multipoint transmission, and as shown in Figure 6, this base station comprises the first receiving element 601, the first feedback unit 602, notification unit 603, the second receiving element 604, the second feedback unit 605 and transmitting element 606, wherein

The first receiving element 601 is used for the upstream data that mobile terminal receive is sent;

The first feedback unit 602 is used in the time can carrying out correct demodulation coding to the upstream data that receiving element 601 receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received;

Notification unit 603 is used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element 601 receives, and sends to cooperative base station to be used for the notification message that correct demodulation coding can not be carried out to upstream data in the notification service base station;

The second receiving element 604 is used for receiving demodulation coding result corresponding to described upstream data that cooperative base station is sent according to described notification message;

The second feedback unit 605 is used for after the second receiving element receives cooperative base station and sends demodulation coding result corresponding to upstream data, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received;

Transmitting element 606, when being used for described base station as cooperative base station, before being used for of receiving that serving BS sends, the notification service base station can not carry out the notification message of correct demodulation coding to upstream data, forbid sending to other base stations upstream data or demodulation coding result corresponding to upstream data; After receiving the notification message that serving BS sends, send demodulation coding result corresponding to upstream data to serving BS.

Wherein, above-mentioned base station should possess the function of the first receiving element 601, the first feedback unit 602, notification unit 603, the second receiving element 604, the second feedback unit 605 correspondences during as serving BS; During as cooperative base station, should possess the function of transmitting element 606.

Please refer to accompanying drawing 7, the second that provides for the embodiment of the invention is used for the structural representation of the base station of cooperative multipoint transmission, this base station comprises the first receiving element 701, the first feedback unit 702, notification unit 703, the second receiving element 704, merges processing unit 705, the second feedback unit 706, the 3rd feedback unit 707 and transmitting element 708, wherein

The first receiving element 701 is used for the upstream data that mobile terminal receive is sent;

The first feedback unit 702 is used in the time can carrying out correct demodulation coding to the upstream data that the first receiving element 701 receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data is correctly received;

Notification unit 703 is used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element 701 receives, and sends to cooperative base station to be used for the notification message that correct demodulation coding can not be carried out to upstream data in the notification service base station;

The second receiving element 704, the upstream data that the described cooperative base station of sending according to described notification message for the reception cooperative base station receives;

Merge processing unit 705, be used for the upstream data that upstream data that the second receiving element 704 is received and the first receiving element 701 receive and merge processing;

The second feedback unit 706 when carrying out correct demodulation coding for the upstream data after can being combined processing unit 705 merging processing, sends the feedback message that is correctly received for the affirmation upstream data to described portable terminal;

The 3rd feedback unit 707 when carrying out correct demodulation coding for the upstream data after can not being combined processing unit 705 merging processing, sends the feedback message that is not correctly received for the affirmation upstream data to described portable terminal;

Transmitting element 708 was used for before being used for of receiving that serving BS sends, the notification service base station can not carry out the notification message of correct demodulation coding to upstream data, forbade sending to other base stations upstream data or demodulation coding result corresponding to upstream data; After receiving serving BS and sending described notification message, send upstream data to serving BS.

Above-mentioned base station is during as serving BS, should possess the first receiving element 701, the first feedback unit 702, notification unit 703, the second receiving element 704, merge the function of processing unit 705, the second feedback unit 706, the 3rd feedback unit 707; During as cooperative base station, should possess the function of transmitting element 708.

Please refer to accompanying drawing 8, the third that provides for the embodiment of the invention is used for structural representation of the base station of cooperative multipoint transmission, this base station comprises the first receiving element 801, the first feedback unit 802, the second receiving element 803, request unit 804, the 3rd receiving element 805, the second feedback unit 806, the first transmitting element 807 and the second transmitting element 808, wherein

The first receiving element 801 is used for the upstream data that mobile terminal receive is sent;

The first feedback unit 802 is used in the time can carrying out correct demodulation coding to the upstream data that the first receiving element 801 receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received;

The second receiving element 803 be used for to receive can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends the message that is used for that other base stations send;

Request unit 804, be used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element 801 receives, according to the message that the second receiving element 803 receives, can carry out to the upstream data that described portable terminal sends other base station requests demodulation codings result of correct demodulation coding at least one;

The 3rd receiving element 805 is used for receiving the demodulation coding result that send according to the request of request unit other base stations;

The second feedback unit 806 is used for after the 3rd receiving element 805 receives the demodulation coding result, sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received;

Can the first transmitting element 807 be used for sending the message that carry out correct demodulation coding for notification service base station self to the upstream data that portable terminal sends to serving BS;

The second transmitting element 808 was used for before the request that receives serving BS, forbade sending upstream data or demodulation coding result corresponding to upstream data to serving BS; After the request that receives serving BS, send demodulation coding result corresponding to upstream data to serving BS.

Above-mentioned base station should possess the function of the first receiving element 801, the first feedback unit 802, the second receiving element 803, request unit 804, the 3rd receiving element 805, the second feedback unit 806 during as serving BS; During as cooperative base station, should possess the function of the first transmitting element 807 and the second transmitting element 808.

Please refer to accompanying drawing 9, the 4th kind of structural representation that is used for the base station of cooperative multipoint transmission that provides for the embodiment of the invention, this base station comprises the first receiving element 901, the first feedback unit 902, the second receiving element 903, request unit 904, the 3rd receiving element 905, merges processing unit 906, the second feedback unit 907, the 3rd feedback unit 908, the first transmitting element 909 and the second transmitting element 910, wherein

The first receiving element 901 is used for the upstream data that mobile terminal receive is sent;

The first feedback unit 902 is used in the time can carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received;

The second receiving element 903 be used for to receive can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends the message that is used for that cooperative base station sends;

Request unit 904, be used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element 901 receives, the message that receives according to the second receiving element 903, when definite all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, the upstream data that receives to the described cooperative base station of cooperative base station request;

The 3rd receiving element 905 is used for receiving the upstream data that cooperative base station is sent according to the request of request unit;

Merge processing unit 906, be used for the upstream data that upstream data that the 3rd receiving element 905 is received and the first receiving element 901 receive and merge processing;

The second feedback unit 907 when carrying out correct demodulation coding for the upstream data after can being combined processing unit 906 merging processing, sends the feedback message that has been correctly received for the affirmation upstream data to described portable terminal;

The 3rd feedback unit 908 when carrying out correct demodulation coding for the upstream data after can not being combined processing unit 906 merging processing, sends the feedback message that is not correctly received for the affirmation upstream data to described portable terminal;

Can the first transmitting element 909 be used for sending the message that carry out correct demodulation coding for notification service base station self to the upstream data that portable terminal sends to serving BS;

The second transmitting element 910 was used for before the request that receives serving BS, forbade sending upstream data or demodulation coding result corresponding to upstream data to serving BS; After the request that receives serving BS, send upstream data to serving BS.

Above-mentioned base station is during as serving BS, should possess the first receiving element 901, the first feedback unit 902, the second receiving element 903, request unit 904, the 3rd receiving element 905, merge the function of processing unit 906, the second feedback unit 907, the 3rd feedback unit 908; During as cooperative base station, should possess the function of the first transmitting element 909 and the second transmitting element 910.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. the processing method of a uplink data in coordinated multipoint transmission is characterized in that, comprising:

The upstream data that the serving BS mobile terminal receive is sent; And

In the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; And

In the time can not carrying out correct demodulation coding to the upstream data that receives, send the notification message that can not carry out to upstream data correct demodulation coding for the notification service base station to cooperative base station;

Demodulation coding result corresponding to described upstream data that the cooperative base station that serving BS reception cooperative base station is sent according to described notification message receives;

Serving BS sends to described portable terminal and to be used for the feedback message of confirming that upstream data has been correctly received after receiving cooperative base station and sending demodulation coding result corresponding to upstream data.

2. the method for claim 1 is characterized in that, serving BS sends described notification message by X2 interface to cooperative base station, and

Receive demodulation coding result corresponding to upstream data that cooperative base station is sent by X2 interface.

3. a cooperative multicast system is characterized in that, comprises the cooperative base station of serving BS and the participation cooperative transmission of portable terminal, wherein:

Serving BS is used for the upstream data that mobile terminal receive is sent; In the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal, in the time can not carrying out correct demodulation coding to the upstream data that receives, send the notification message that can not carry out to upstream data correct demodulation coding for the notification service base station to cooperative base station; And receive demodulation coding result corresponding to described upstream data that cooperative base station is sent according to described notification message; After receiving cooperative base station and sending demodulation coding result corresponding to upstream data, send to described portable terminal and to be used for the feedback message of confirming that upstream data has been correctly received;

Cooperative base station is used for the upstream data that mobile terminal receive is sent, and before receiving the notification message that serving BS sends, forbids sending described upstream data or demodulation coding result corresponding to upstream data to serving BS.

4. a base station that is used for cooperative multipoint transmission is characterized in that, comprising:

The first receiving element is used for the upstream data that mobile terminal receive is sent;

The first feedback unit is used in the time can carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received;

Notification unit is used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element receives, and sends to cooperative base station to be used for the notification message that correct demodulation coding can not be carried out to upstream data in the notification service base station;

The second receiving element is used for receiving demodulation coding result corresponding to described upstream data that cooperative base station is sent according to described notification message;

The second feedback unit is used for after the second receiving element receives cooperative base station and sends demodulation coding result corresponding to upstream data, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received;

Transmitting element was used for before being used for of receiving that serving BS sends, the notification service base station can not carry out the notification message of correct demodulation coding to upstream data, forbade sending to other base stations upstream data or demodulation coding result corresponding to upstream data; After receiving the notification message that serving BS sends, send demodulation coding result corresponding to upstream data to serving BS.

5. the processing method of a uplink data in coordinated multipoint transmission is characterized in that, comprising:

The upstream data that the serving BS mobile terminal receive is sent; And

The described upstream data that the described cooperative base station that serving BS reception cooperative base station is sent according to described notification message receives; And

The cooperative base station upstream data of sending and the upstream data that self receives are merged processing, and

When the upstream data after can being combined processing carries out correct demodulation coding, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; And

When the upstream data after can not being combined processing carries out correct demodulation coding, send for the feedback message of confirming that upstream data is not correctly received to described portable terminal.

6. method as claimed in claim 5 is characterized in that, serving BS sends described notification message by X2 interface to cooperative base station, and

Receive the upstream data that cooperative base station is sent by X2 interface.

7. a cooperative multicast system is characterized in that, comprises the cooperative base station of serving BS and the participation cooperative transmission of portable terminal, wherein:

Serving BS is used for the upstream data that mobile terminal receive is sent; In the time can carrying out correct demodulation coding to the upstream data that receives, send for the feedback message of confirming that upstream data has been correctly received to described portable terminal; In the time can not carrying out correct demodulation coding to the upstream data that receives, send the notification message that can not carry out to upstream data correct demodulation coding for the notification service base station to cooperative base station; And receive the described upstream data that cooperative base station is sent according to described notification message; And the upstream data that cooperative base station is sent and the upstream data that self receives merge processing, and the upstream data after can being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received; And the upstream data after can not being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data is not correctly received;

8. a base station that is used for cooperative multipoint transmission is characterized in that, comprising:

The second receiving element is used for receiving the described upstream data that cooperative base station is sent according to described notification message;

Merge processing unit, be used for the upstream data that upstream data that the second receiving element is received and the first receiving element receive and merge processing;

The second feedback unit when carrying out correct demodulation coding for the upstream data after can being combined processing unit merging processing, sends the feedback message that has been correctly received for the affirmation upstream data to described portable terminal;

The 3rd feedback unit when carrying out correct demodulation coding for the upstream data after can not being combined processing unit merging processing, sends the feedback message that is not correctly received for the affirmation upstream data to described portable terminal;

Transmitting element was used for before being used for of receiving that serving BS sends, the notification service base station can not carry out the notification message of correct demodulation coding to upstream data, forbade sending to other base stations upstream data or demodulation coding result corresponding to upstream data; After receiving serving BS and sending described notification message, send upstream data to serving BS.

9. the processing method of a uplink data in coordinated multipoint transmission is characterized in that, comprising:

The upstream data that the serving BS mobile terminal receive is sent, and

In the time can not carrying out correct demodulation coding to the upstream data that receives, be used for can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends message according to what cooperative base station was sent, can carry out to described upstream data the cooperative base station request demodulation coding result of correct demodulation coding at least one;

Serving BS receives the demodulation coding result that cooperative base station is sent according to described request; And

After receiving cooperative base station and sending the demodulation coding result, send to described portable terminal and to be used for the feedback message of confirming that upstream data has been correctly received.

10. method as claimed in claim 9 is characterized in that, cooperative base station sends to serving BS by X2 interface and is used for can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends message, and

Serving BS can carry out to the upstream data that described portable terminal sends the cooperative base station request demodulation coding result of correct demodulation coding by X2 interface at least one.

11. a cooperative multicast system is characterized in that, comprises the cooperative base station of serving BS and the participation cooperative transmission of portable terminal, wherein:

Serving BS is used for the upstream data that mobile terminal receive is sent, and in the time can carrying out correct demodulation coding to the upstream data that receives, sends for the feedback message of confirming that upstream data has been correctly received to described portable terminal; In the time can not carrying out correct demodulation coding to the upstream data that receives, be used for can the described cooperative base station in notification service base station carry out correct demodulation coding to described upstream data message according to what cooperative base station was sent, can carry out to described upstream data the cooperative base station request demodulation coding result of correct demodulation coding at least one; Receive the demodulation coding result that cooperative base station is sent according to described request; After receiving cooperative base station and sending the demodulation coding result, send to described portable terminal and to be used for the feedback message of confirming that upstream data has been correctly received;

Cooperative base station, be used for the upstream data that mobile terminal receive is sent, and after to the upstream data demodulation coding that receives, send to serving BS and to be used for correct demodulation coding be carried out in notification service base station self can to the upstream data that described portable terminal sends message; Before the request that receives serving BS, forbid sending described upstream data or demodulation coding result corresponding to upstream data to serving BS.

12. a base station that is used for cooperative multipoint transmission is characterized in that, comprising:

The second receiving element be used for to receive correct demodulation coding be carried out in notification service base station collaboration base station can to the upstream data that described portable terminal sends the message that is used for that other base stations send;

Request unit, be used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element receives, according to the message that the second receiving element receives, can carry out to the upstream data that described portable terminal sends other base station requests demodulation codings result of correct demodulation coding at least one;

The 3rd receiving element is used for receiving the demodulation coding result that send according to the request of request unit other base stations;

The second feedback unit is used for after the 3rd receiving element receives the demodulation coding result, sends to described portable terminal to be used for the feedback message that the affirmation upstream data has been correctly received;

Can the first transmitting element be used for sending the message that carry out correct demodulation coding for notification service base station self to the upstream data that portable terminal sends to serving BS;

The second transmitting element was used for before the request that receives serving BS, forbade sending upstream data or demodulation coding result corresponding to upstream data to serving BS; After the request that receives serving BS, send demodulation coding result corresponding to upstream data to serving BS.

13. the processing method of a uplink data in coordinated multipoint transmission is characterized in that, comprising:

The upstream data that the serving BS mobile terminal receive is sent, and

In the time can not carrying out correct demodulation coding to the upstream data that receives, be used for can the described cooperative base station in notification service base station carry out correct demodulation coding to described upstream data message according to what cooperative base station was sent, when definite all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, the upstream data that receives to the described cooperative base station of cooperative base station request;

Serving BS merges processing to cooperative base station according to the described request upstream data of sending and the upstream data that self receives; And

14. method as claimed in claim 13 is characterized in that, cooperative base station sends to serving BS by X2 interface and is used for can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends message, and

The upstream data that serving BS receives to the described cooperative base station of cooperative base station request by X2 interface.

15. a cooperative multicast system is characterized in that, comprises the cooperative base station of serving BS and the participation cooperative transmission of portable terminal, wherein:

Serving BS is used for the upstream data that mobile terminal receive is sent, and in the time can carrying out correct demodulation coding to the upstream data that receives, sends for the feedback message of confirming that upstream data has been correctly received to described portable terminal; In the time can not carrying out correct demodulation coding to the upstream data that receives, be used for can the described cooperative base station in notification service base station carry out correct demodulation coding to described upstream data message according to what cooperative base station was sent, when definite all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, the upstream data that receives to the described cooperative base station of cooperative base station request; Cooperative base station is merged processing according to the described request upstream data of sending and the upstream data that self receives, and the upstream data after can being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data has been correctly received; And the upstream data after can not being combined processing is when carrying out correct demodulation coding, sends to described portable terminal to be used for the feedback message of confirming that upstream data is not correctly received;

16. a base station that is used for cooperative multipoint transmission is characterized in that, comprising:

The second receiving element be used for to receive can the described cooperative base station in notification service base station carry out correct demodulation coding to the upstream data that described portable terminal sends the message that is used for that cooperative base station sends;

Request unit, be used in the time can not carrying out correct demodulation coding to the upstream data that the first receiving element receives, the message that receives according to the second receiving element, when definite all cooperative base station all can not be carried out correct demodulation coding to the upstream data that receives, the upstream data that receives to the described cooperative base station of cooperative base station request;

The 3rd receiving element is used for receiving the upstream data that cooperative base station is sent according to the request of request unit;

Merge processing unit, be used for the upstream data that upstream data that the 3rd receiving element is received and the first receiving element receive and merge processing;

The second transmitting element was used for before the request that receives serving BS, forbade sending upstream data or demodulation coding result corresponding to upstream data to serving BS; After the request that receives serving BS, send upstream data to serving BS.