CN102594532A - Method and apparatus for handling impact of delayed HARQ and backhaul - Google Patents

Abstract

Method and apparatus for handling the impact of delayed HARQ and feedback for a network in a wireless communication system, the mobile device supporting a coordinated multi-point transmission/reception operation, the method comprising determining a modified HARQ operation for the coordinated multi-point transmission/reception operation, wherein the modified HARQ operation is a derived HARQ operation or a change in the HARQ operation; setting the modified h-arq operation to a mobile device in the wireless communication system when the mobile device is engaged in the comp transmission/reception operation; and performing a transmission or a reception of a HARQ process according to the modified HARQ operation.

Description

Method and apparatus for dealing with effects of delayed mixed automatic repeat request and feedback

technical field

The present invention relates to a method for a wireless communication system and a communication device thereof, in particular to a method for dealing with the effect of delay on HARQ and backhaul operations of CoMP transmission/reception and communication thereof device.

Background technique

In order to improve the Universal Mobile Telecommunications System (UMTS), the 3rd Generation Partnership Project (the 3rd Generation Partnership Project, 3GPP) has developed a long-term evolution (Long Term Evolution, LTE) system with better performance, which supports The 3rd Generation Partnership Project Release 8 (3GPP Rel-8) standard and/or the 3rd Generation Partnership Project Release 9 (3GPP Rel-9) standard to meet the increasing needs of users. The LTE system is regarded as a new wireless interface and wireless network architecture that provides high data transmission rate, low latency, packet optimization, and improved system capacity and coverage. It consists of multiple evolved base stations (evolved Node- The Evolved Universal Terrestrial Radio Access Network (E-UTRAN) composed of Bs, eNBs) communicates with the user end on the one hand, and communicates with the non-access stratum (Non Access Stratum) on the other hand. The core network controlled by Stratum (NAS) communicates, and the core network includes entities such as a serving gateway (serving gateway) and a mobility management unit (Mobility Management Entity, MME).

The LTE-advanced (LTE-A) system is an advanced version of the LTE system, which includes carrier aggregation (carrier aggregation), coordinated multipoint transmission/reception (CoMP) and multiple input multiple Output (multi-inputmulti-output, MIMO) and other advanced technologies to extend bandwidth, provide fast switching power state and improve cell edge performance. In order to enable the UE and eNB in the LTE-Advanced system to communicate with each other, the UE and the eNB must support the standards formulated for the LTE-Advanced system, such as the 10th release of the 3rd Generation Partnership Project (3GPP Rel- 10) Standard or newer version of the standard.

When CoMP transmission/reception is configured for the UE and multiple cells (such as cooperating points), the UE can communicate with multiple cells at the same time, that is, access services through some or all of the cells. In more detail, an eNB can manage a single cell or multiple cells (eg via remote radio head (RRH)). That is to say, the cell IDs (cell IDs) of the multiple cells may be different or the same. Therefore, the signals transmitted between the UE and multiple cells can have better quality. In detail, the cells participating in the CoMP transmission/reception can be regarded as cooperating cells, which have a serving cell. Generally speaking, the signal quality between the serving cell and the UE is better than the signal quality between other cooperative cells and the UE. The control information required for the CoMP/RX operation is usually sent from the UE to the serving cell first, and then the serving cell exchanges the control information with other cooperating cells to enable the CoMP/RX to operate normally. Further, CoMP transmission/reception can be divided into two main categories: Joint Processing (JP) and Coordinated Scheduling/Beamforming (CS/CB). The main difference between joint processing and coordinated scheduling/beamforming is that when joint processing is used (i.e., enabled), all cooperating cells have the data required by the UE; while when coordinated scheduling/beamforming is used, only the serving cell has user data. data required by the terminal. Joint processing can be further classified into joint transmission and dynamic cell selection. When joint transmission is used, data at the UE can be transmitted to the UE through multiple cooperating cells (eg, in a synchronous or asynchronous manner) to improve signal quality and/or eliminate interference; when dynamic cell selection is used, data at the UE It will only be transmitted to the UE through one of the cooperative cells (eg, according to the suggestion or selection of the UE) to improve signal quality and/or avoid interference. On the other hand, when coordinated scheduling/beamforming is used, UE data will only be transmitted to the UE through the serving cell, and other cooperating cells will stop transmitting data or adjust beamforming to mitigate interference.

The hybrid automatic repeat request (HARQ) procedure is used in the LTE system and the LTE-Advanced system to provide high-efficiency and reliable data transmission. Different from ARQ, error correction code (ECC) will be used in HARQ. For example, if the receiving end (such as the UE) can correctly decode the packet, the receiving end will return an acknowledgment (ACK) to the transmitting end (such as the cell) to notify that the packet has been correctly received. On the contrary, if the receiving end (such as the UE) cannot correctly decode the packet, the receiving end will return a negative acknowledgment (NACK) to the transmitting end (such as the cell) to inform that the packet was not received correctly. In this case, the receiving end will store part or all of the packets in the soft buffer of the receiving end. After the receiving end receives the retransmitted packets, the receiving end can combine the retransmitted packets and the stored packets. to perform joint decoding. The receiving end will continue to mix the ARR procedure until the packet is decoded correctly or the number of retransmissions exceeds a preset upper limit. Since packets with a few errors can be correctly decoded by using error correction codes without returning non-received errors (that is, requiring retransmission), the output rate of the communication system can be improved while the number of retransmissions is reduced.

However, when performing HARQ procedures, CoMP/RX may not work due to coordination latency. In detail, after the serving cell receives the control information from the UE, the serving cell and other cooperating cells will exchange necessary information (such as UE data, coordination control information, scheduling and/or resource allocation) to enable CoMP/ Reception works normally. However, the HARQ procedure (such as transmission or reception) operates according to the round-trip time (RTT) defined by the 3rd Generation Partnership Project standard, and the serving cell and other cooperating cells may not be able to meet the round-trip time Complete the exchange of necessary information. In other words, the cooperating cells may need to perform the HARQ procedure before completing the necessary information exchange. That is, CoMP/RX may operate with wrong, outdated or incomplete control information, reducing the performance of CoMP/RX. Therefore, how to solve the problems caused by the coordination delay is an important issue.

Contents of the invention

Therefore, the main purpose of the present invention is to provide a method and its communication device for dealing with the effect of delay on HARQ and backhaul operation of CoMP/RX, so as to solve the above problems.

The invention discloses a method for processing a hybrid automatic repeat request (HARQ) operation, which is used for a network end of a wireless communication system, and the mobile device supports a coordinated multipoint transmission/reception (coordinated multipoint transmission/reception) reception (CoMP) operation, the method includes determining a modified HARQ operation (modified HARQ operation) for the coordinated multipoint transmission/reception operation, wherein the modified HARQ operation is a derivative The hybrid automatic repeat request operation (derived HARQ operation) or a change of the hybrid automatic repeat request operation; when a mobile device in the wireless communication system participates in the coordinated multi-point transmission/reception operation, the modified hybrid is set an HARQ operation to the mobile device; and performing a transmission or a reception of a HARQ process according to the modified HARQ operation.

The present invention also discloses a method for processing a hybrid automatic repeat request (HARQ) operation, which is used for a mobile device in a wireless communication system, and the mobile device supports a coordinated multipoint transmission/reception (coordinated multipoint transmission) /reception, CoMP) operation, the method includes when the mobile device participates in the coordinated multi-point transmission/reception operation, a network end of the wireless communication system sets the modified HARQ operation to the mobile device, Wherein the modified HARQ operation is a derived HARQ operation (derived HARQ operation) or a variation of the HARQ operation; and according to the modified HARQ operation, performing A transmission or a reception of a HARQ process.

The present invention also discloses a method for processing a coordinated multipoint transmission/reception (CoMP) operation, which is used for a network end of a wireless communication system, and the network end supports the coordinated multipoint transmission/reception operation, The method includes determining at least one of a transmission mode and a modulation and coding scheme (MCS) of the coordinated multipoint transmission/reception operation for successive transmissions corresponding to the HARQ operation or receiving; and performing the transmitting or the receiving corresponding to the HARQ operation at a mobile device in the wireless communication system according to at least one of the at least one transmission mode and modulation and coding scheme.

Description of drawings

FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a communication device according to Embodiment 1 of the present invention.

FIG. 3 is a schematic diagram of communication protocol layers used in a wireless communication system according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of a process in Embodiment 1 of the present invention.

FIG. 5 is a schematic diagram of a process in Embodiment 1 of the present invention.

[Description of main component symbols]

10 Wireless communication system

20 Communication device

200 processing device

210 storage units

214 Program code

220 Communication interface unit

300 radio resource control layer

302 Packet Data Convergence Protocol Layer

304 Radio Link Control Layer

306 Media Access Control Layer

308 Physical layer

40, 50 Process

400, 402, 404, 406, 408, steps

500, 502, 504, 506

Detailed ways

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a wireless communication system 10 according to an embodiment of the present invention. Point transmission/reception (coordinated multipoint transmission/reception, CoMP). In FIG. 1 , the network end and the user end are used to illustrate the architecture of the wireless communication system 10 . In the LTE-Advanced system, the network end can be an evolved universal terrestrial radio access network (evolved universal terrestrial radio access network, E-UTRAN), which can include multiple evolved base stations (evolved NBs, eNBs) and Relays. Further, each eNB can manage one or more cells (such as cooperating cells), and the relay station can also serve as a cell. The client end can be devices such as mobile phones, notebook computers, tablet computers, e-books, and portable computer systems. In addition, according to the transmission direction, the network end and the user end can be regarded as the transmitting end or the receiving end respectively. For example, for an uplink (UL), the UE is the transmitter and the network is the receiver; for a downlink (DL), the network is the transmitter and the UE is the receiver.

Please refer to FIG. 2 , which is a schematic diagram of a communication device 20 according to an embodiment of the present invention. The communication device 20 can be the client terminal or the network terminal in FIG. 1 , and includes a processing device 200 , a storage unit 210 and a communication interface unit 220 . The processing device 200 can be a microprocessor or an application-specific integrated circuit (ASIC). The storage unit 210 can be any data storage device for storing a program code 214 , and the program code 214 can be read and executed by the processing device 200 . For example, the storage unit 210 may be a subscriber identity module (subscriber identity module, SIM), a read-only memory (read-only memory, ROM), a random-access memory (random-access memory, RAM), an optical disc read-only memory ( CD-ROM/DVD-ROM), magnetic tape (magnetic tape), hard disk (hard disk) and optical data storage device (optical data storage device), etc., but not limited thereto. The control communication interface unit 220 can be a wireless transceiver, which is used to transmit and receive wireless signals according to the processing results of the processing device 200 .

Please refer to FIG. 3 , which is a schematic diagram of communication protocol layers used in the wireless communication system 10 according to an embodiment of the present invention. Behaviors of some protocol layers can be defined in the program code 214 and executed by the processing device 200 . The protocol layers from top to bottom are radio resource control (radio resource control, RRC) layer 300, packet data convergence protocol (packet data convergence protocol, PDCP) layer 302, radio link control (radio link control, RLC) layer 304, A medium access control (medium access control, MAC) layer 306 and a physical (physical, PHY) layer 308 . The RRC layer 300 is used for broadcasting, paging, RRC connection management, measurement feedback and control, and radio bearer control for generating and releasing radio bearers. The packet data convergence protocol layer 302 is used to handle transmission encryption and integrity protection (integrity protection), and maintain the delivery sequence of packets when handover occurs. The RLC layer 304 is used to segment (segment)/concatenate (concatenate) packets, and maintain the delivery sequence of packets when packets are lost. The medium access control layer 306 is used for hybrid automatic repeat request (HARQ) procedure, compound logical channel, random access channel (random access channel (RACH) procedure and maintaining uplink timing alignment. In the HARQ procedure, when the UE successfully receives and decodes the data/control packet of the media access control layer, it returns an acknowledgment (acknowledgment, ACK) to the network; if not, it returns an acknowledgment. Not received error (negative acknowledgment, NACK) to the network side. The physical layer 308 is used to provide physical channels. It should be noted that Fig. 3 is used to briefly illustrate the behavior of the protocol layer, in fact, according to the protocol layer used in different versions of the LTE-Advanced system, its behavior is different.

Please refer to FIG. 4 , which is a flowchart of a process 40 according to Embodiment 1 of the present invention. The process 40 is used in the network in FIG. 1 to handle HARQ operations. Process 40 can be compiled into program code 214, which includes the following steps:

Step 400: start.

Step 402: Determine a modified HARQ operation (modified HARQ operation) for coordinated multipoint transmission/reception operation, wherein the modified HARQ operation is a derived HARQ operation ( derived HARQ operation) or a variation of hybrid automatic repeat request operation.

Step 404: Set the modified HARQ operation to a UE when participating in CoMP/RX operation.

Step 406: Perform a transmission or a reception of a HARQ procedure according to the modified HARQ operation.

Step 408: end.

According to the process 40, the network end (such as the serving cell of the UE) will first determine a modified HARQ operation for the coordinated multipoint transmission/reception operation, wherein the modified HARQ operation is A derivative HARQ operation or a variation of HARQ operation. When the UE participates in the coordinated multicast/reception operation configured by the network for the UE, the network configures the modified HARQ operation for the UE. Then, according to the modified HARQ operation, the network or the UE performs a transmission or a reception of a HARQ procedure (eg, in uplink or downlink). In addition, the UE also performs the transmission or reception of the HARQ procedure accordingly. That is to say, the network side modifies the HARQ operation for the network side and the UE side, so that the cooperating cells at the network side have enough time to exchange necessary information required for coordinating the multicast/reception operation. In other words, the CoMP operation can use complete information to operate. Therefore, CoMP operation may function normally to improve signal quality and/or mitigate interference.

It should be noted that the spirit of the process 40 is that the network (eg, the serving cell of the UE) modifies a HARQ operation to accommodate the coordination delay caused by exchanging the necessary information required for the coordinated multicast/reception operation. The implementation of the process 40 is not limited. The UE also executes a corresponding process, which corresponds to the process 40 . The modified HARQ operation may indicate a configurable round-trip time (RTT) of the HARQ procedure for coordinated multicast/receive operation, wherein the round-trip time is configurable by Modify to a configured round-trip time (configured RTT), extend from a preset round-trip time (predefined RTT) to an extended round-trip time (extended RTT), or modify to a multiple of the preset round-trip time. Further, the UE or the network determines an overtime of the HARQ procedure (such as in the uplink or downlink) according to the set round-trip time, the extended round-trip time or the multiple of the preset round-trip time. Timeout is used to perform the transmission or reception of the HARQ procedure. Furthermore, the modified HARQ operation indicates multiple parallel HARQ processes (as per the currently defined hybrid automatic repeat request procedure) can be set. Further, the modified HARQ operation indicates that a number M of parallel HARQ procedures for multiple consecutive transmissions or receptions is configurable. Therefore, when the number M of multiple parallel HARQ procedures for multiple consecutive transmissions or receptions is set, the UE or the network executes HARQ transmissions or receptions once, and the number of times is greater than A number of round-trip times. For example, taking the HARQ procedures H1-H8 as an example, each HARQ procedure can be further divided into N (eg, 3) parallel HARQ procedures. For example, a HARQ procedure HX can be divided into parallel HARQ procedures HXa, HXb, and HXc, wherein the parallel HARQ procedure can be a new transmission or a retransmission. Taking the HARQ procedure H5 as an example, the HARQ procedure H5 is divided into parallel HARQ procedures H5a, H5b and H5c. If the parallel HARQ procedure H5a cannot be properly processed (such as being sent back according to the acknowledgment/non-receipt error or performing decoding when receiving), the UE or the network will continue to process the HARQ procedure H5b ( That is, the HARQ procedure H5a) is skipped first. In addition, a number of transmissions or receptions corresponding to a number of parallel HARQ procedures are accumulated until the information exchange for coordinating multicast/reception operations is completed. For example, if the exchange of information between cooperative cells takes 3 round trips to complete, the UE or the network needs to be able to handle (eg, synchronize) multiple parallel HARQ procedures accumulated in the 3 round trips.

On the other hand, the network can exchange necessary coordination information based on a delay, transmission or reception mode, resource allocation or scheduling, a backhaul mechanism and cooperative stations (such as intra- At least one of the deployments of the /outer eNB) determines the operation of the modified HARQ. The UE is configured according to at least one of a configuration of CoMP/RX operation, a configuration of transmit or receive mode, backhaul configuration, a scheduling grant, and a downlink assignment. There must be a modified HARQ operation.

In short, the spirit of the present invention is to change the existing HARQ operation (such as extending the round trip time or using parallel HARQ procedures) to accommodate the coordination delay. That is to say, when implementing HARQ in CoMP/RX, it should be allowed to change or configure the HARQ operation through the network side. Based on the selected CoMP/RX transmission mode and participating stations, the network can determine the corresponding HARQ operation (e.g. multiple round-trip times for successive transmissions or parallel HARQ procedures) , and inform the client of the determined configuration, which may be determined based on delay, system output rate, coordination method, complexity, and/or message exchange.

Therefore, according to the above description and the process 40, when the CoMP/RX is configured for the UE and the network including multiple cooperating cells, the cooperating cells can have enough time to exchange the CoMP/RX operation required information. In this way, CoMP can function normally to improve signal quality and/or mitigate interference.

Please refer to FIG. 5 , which is a flowchart of a process 50 according to Embodiment 1 of the present invention. The process 50 is used in the network in FIG. 1 to process the CoMP operation. Process 50 can be compiled into program code 214, which includes the following steps:

Step 500: start.

Step 502: Determine at least one of at least one transmission mode and modulation and coding scheme (MCS) for the CoMP operation for subsequent transmission or reception corresponding to the HARQ operation.

Step 504: According to at least one of the at least one transmission mode and modulation and coding scheme, perform transmission or reception corresponding to HARQ operation at a UE in the wireless communication system.

Step 506: end.

According to the process 50, the network end will first determine at least one transmission mode and modulation and coding scheme (MCS) for coordinated multipoint transmission/reception operation, such as joint processing (Joint Processing, JP) and coordinated scheduling/beamforming ( At least one of Coordinated Scheduling/Beamforming (CS/CB), etc., is used for sequential transmission or reception corresponding to HARQ operations. That is, use one transmission mode for some of the sequential transmissions, and use another transmission mode for the other sequential transmissions. Then, according to at least one of the transmission mode and at least one of the modulation and coding schemes, the network side makes the user end perform transmission or reception corresponding to HARQ operation in a user end of the wireless communication system. That is to say, the network side can adjust, select or switch at least one transmission mode and modulation and coding scheme for coordinated multipoint transmission/reception operation. In other words, the transmission modes and modulation and coding schemes used for successive transmissions may be different. Therefore, even if coordination delay occurs when cooperating cells exchange necessary information, CoMP transmission/reception can operate normally without being affected by the coordination delay.

It should be noted that the spirit of the process 50 is that coordination delays will occur when the cooperative cells exchange necessary information, and the network can adjust at least one transmission mode and at least one of the modulation and coding schemes, so that the coordinated multipoint transmission/reception is not affected. Normal operation under the influence of coordination delay. The implementation of the process 50 is not limited. For example, the network side may determine at least one transmission mode and at least one of modulation and coding schemes of the CoMP transmission/reception operation that will generate a small delay for early transmission or reception of the HARQ operation; the determination generates At least one of the transmission mode and at least one of the modulation and coding schemes of the larger-delay CoMP/RX operation is used for post-transmission or reception of the HARQ operation. That is, at least one of the transmission mode and at least one of the modulation and coding schemes of the CoMP transmission/reception operation that causes less delay can be used for early transmission or reception because only part of the information exchange is completed at the early stage, so as to Comply with the requirements of HARQ operation. Because more complete information has been exchanged later, at least one of the transmission mode and the modulation and coding method of the CoMP operation that causes a larger delay can be used for later transmission or reception. Alternatively, determine at least one of the transmission mode and at least one of the modulation and coding schemes for the CoMP transmission/reception operation that requires less signaling for early transmission or reception of the HARQ operation; determine that more signaling is required At least one of the transmission mode and the modulation and coding scheme of the CoMP transmission/reception operation is used for post-transmission or reception of the HARQ operation. That is, at least one of the transmission mode and the modulation and coding scheme for the CoMP operation that requires less signaling can be used for early transmission or reception because only a portion of the information is exchanged initially, To meet the requirements of HARQ operation. Since more complete information has been exchanged later, at least one of the transmission mode and the modulation and coding method of the CoMP operation requiring more signaling can be used for later transmission or reception. In another aspect, determining at least one transmission mode and at least one of modulation and coding schemes involving the CoMP transmission/reception operation of fewer base stations in the network side for early transmission or reception of the HARQ operation; the determination involves At least one transmission mode and at least one of modulation and coding schemes of the CoMP transmission/reception operation of more base stations in the network are used for post-transmission or reception of the HARQ operation. That is, at least one of the transmission mode and at least one of the modulation and coding schemes involving the CoMP transmission/reception operation of fewer base stations in the network can be used for early transmission or Received to meet the requirements of HARQ operation. Because more complete information has been exchanged later, at least one transmission mode and at least one of modulation and coding schemes involved in the CoMP transmission/reception operation of more base stations in the network can be used for later transmission or reception.

Therefore, according to the above description and the process 50, CoMP/RX can dynamically operate to meet the requirements of HARQ operation without using stale or wrong information to operate. In this way, CoMP can function normally to improve signal quality and/or mitigate interference.

The steps of all the aforementioned processes (including the suggested steps) can be realized by devices, which can be hardware, firmware (a combination of hardware devices and computer instructions and data, and computer instructions and data belong to read-only software on hardware devices) or electronic system. The hardware can be an analog microcomputer circuit, a digital microcomputer circuit, a hybrid microcomputer circuit, a microcomputer chip, or a silicon chip. The electronic system can be a system on chip (SOC), a system in package (SiP), an embedded computer (computer on module, COM) and a communication device 20 .

To sum up, the present invention provides a method for modifying HARQ operation and adjusting CoMP/RX operation, so that CoMP/RX can operate normally without violating HARQ operation. That is, the original coordination delay is lower than the modified round-trip time of the HARQ operation, or a short coordination delay is lower than the original round-trip time of the HARQ operation, so that the coordinated multicast/reception can Normal operation to improve signal quality and/or mitigate interference.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (24)

1. A method for processing hybrid automatic repeat request (HARQ) operation, used for a network end of a wireless communication system, the mobile device supports coordinated multipoint transmission/reception (coordinated multipoint transmission/reception, CoMP) operation, the method includes: Determine a modified HARQ operation for coordinated multipoint transmission/reception operation, wherein the modified HARQ operation is a derived HARQ operation ) or a variation of HARQ operation; When a mobile device in the wireless communication system participates in CoMP transmission/reception operation, setting the modified HARQ operation to the mobile device; and According to the modified HARQ operation, a HARQ process (HARQ process) is transmitted or received. 2. The method as claimed in claim 1, wherein the modified HARQ operation indicates a round-trip time (round-trip time, RTT) of HARQ procedure for coordinated multicast transmission/reception operation Can be set (configurable). 3. The method of claim 2, wherein the round trip time is modified to a configured round trip time (configured RTT), extended from a preset round trip time (predefined RTT) to an extended round trip time (extended RTT) or be modified to a multiple of the preset round-trip time. 4. The method according to claim 3, wherein the network determines a HARQ procedure according to the set round-trip time, the extended round-trip time or the multiple of the preset round-trip time Timeout (timeout), used to execute the transmission or reception of the HARQ procedure. 5. The method of claim 1, wherein the modified HARQ operation indicates that multiple parallel HARQ processes (parallel HARQ processes) for multiple consecutive transmissions or receptions are configurable. 6. The method of claim 5, wherein the modified HARQ operation indicates that a number of parallel HARQ procedures for the plurality of consecutive transmissions or receptions is configurable. 7. The method as claimed in claim 6, wherein when the number of parallel HARQ procedures for the multiple consecutive transmissions or receptions is set, the network executes the HARQ procedure The number of times the requestor has transmitted or received a number greater than a number of round-trip times. 8. The method of claim 7, wherein a feedback corresponding to the number of transmissions or receptions of the plurality of parallel HARQ procedures is accumulated up to information for coordinating multicast/reception operations until the exchange is completed. 9. The method as claimed in claim 1, wherein the network side is based on a delay, transmission or reception mode, resource allocation or scheduling, a backhaul generated by exchanging necessary coordination information in order to support CoMP/Rx operation At least one of the configuration of the mechanism and the cooperative station determines the operation of the modified HARQ. 10. The method of claim 1 , wherein based on a configuration of CoMP transmission/reception operation, a configuration of transmit or receive mode, backhaul configuration, a scheduling grant and a downlink allocation (downlink assignment), the mobile device is configured to operate with the modified HARQ. 11. A method for processing hybrid automatic repeat request (HARQ) operation, used for a mobile device in a wireless communication system, the mobile device supports coordinated multipoint transmission/reception (coordinated multipoint transmission/reception, CoMP) operation, the method includes: When the mobile device participates in CoMP transmission/reception operation, a network of the wireless communication system sets a modified HARQ operation to the mobile device, wherein the modified HARQ operation is a derived HARQ operation or a variation of HARQ operation; and According to the modified HARQ operation, a transmission or a reception of a HARQ process is performed. 12. The method of claim 11, wherein the modified HARQ operation indicates a round-trip time (RTT) of the HARQ procedure for coordinated multicast/reception operation ) can be set (configurable). 13. The method of claim 12, wherein the round trip time is modified to a set round trip time (configured RTT), extended from a preset round trip time (predefined RTT) to an extended round trip time (extended RTT) or be modified to a multiple of the preset round-trip time. 14. The method of claim 13, wherein the mobile device determines a HARQ procedure according to the set round trip time, the extended round trip time or the multiple of the preset round trip time Timeout (timeout), used to execute the transmission or reception of the HARQ procedure. 15. The method of claim 11, wherein the modified HARQ operation indicates that multiple parallel HARQ processes (parallel HARQ processes) for multiple consecutive transmissions or receptions are configurable. 16. The method of claim 15, wherein the modified HARQ operation indicates that a number of parallel HARQ procedures for the plurality of consecutive transmissions or receptions is configurable. 17. The method of claim 16, wherein the mobile device executes the HARQ when the number of parallel HARQ procedures for the multiple consecutive transmissions or receptions is set The requestor's transmission or reception count that is greater than a number of round-trip times. 18. The method of claim 17, wherein a return of the number of the transmission or the reception corresponding to the plurality of parallel HARQ procedures is accumulated until used for coordinated multicast/reception operation information exchange is completed. 19. The method as claimed in claim 11, wherein the network is based on a delay, transmission or reception mode, resource allocation or scheduling, a backhaul generated by exchanging necessary coordination information in order to support CoMP operation At least one of the configuration of the mechanism and the cooperative station determines the operation of the modified HARQ. 20. The method of claim 11 , wherein based on a configuration of CoMP transmission/reception operation, a configuration of transmit or receive mode, backhaul configuration, a scheduling grant, and a downlink allocation (downlink assignment), the mobile device is configured to operate with the modified HARQ. 21. A method for processing coordinated multipoint transmission/reception (CoMP) operation, used for a network end of a wireless communication system, the network end supporting coordinated multipoint transmission/reception operation, the method comprising have: Determining at least one of a transmission mode and a modulation and coding scheme (MCS) for coordinated multipoint transmission/reception operation for successive transmission or reception corresponding to a hybrid automatic repeat request operation (HARQ operation) ;as well as According to at least one of the at least one transmission mode and the modulation and coding method, a mobile device in the wireless communication system performs transmission corresponding to a HARQ operation or reception in the wireless communication system. 22. The method of claim 21, wherein at least one of the at least one transmission mode and modulation and coding scheme for CoMP transmission/reception operation is determined for the subsequent transmissions corresponding to HARQ operation or receiving steps include: determining at least one of the at least one transmission mode and modulation and coding scheme of the CoMP transmission/reception operation that causes less delay for early transmission or reception of HARQ operation; and At least one of the at least one transmission mode and modulation and coding scheme of the CoMP transmission/reception operation that generates a relatively large delay is determined for post-transmission or reception of the HARQ operation. 23. The method of claim 21, wherein determining at least one of the at least one transmission mode and modulation and coding scheme for CoMP transmission/reception operation is used for the subsequent transmissions corresponding to HARQ operation or receiving steps include: determining at least one of the at least one transmission mode and modulation and coding scheme for the CoMP transmission/reception operation requiring less signaling for early transmission or reception of HARQ operation; and At least one of the at least one transmission mode and modulation and coding scheme of the CoMP transmission/reception operation requiring more signaling is determined for later transmission or reception of HARQ operation. 24. The method of claim 21, wherein at least one of the at least one transmission mode and modulation and coding scheme for CoMP transmission/reception operation is determined for the successive transmissions corresponding to HARQ operation or receiving steps include: determining at least one of the at least one transmission mode and modulation and coding scheme involving a CoMP transmission/reception operation involving fewer base stations in the network for early transmission or reception of HARQ operation; as well as At least one of the at least one transmission mode and modulation and coding scheme involving the CoMP transmission/reception operation of more base stations in the network is determined for post-transmission or reception of the HARQ operation.

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