WO2010105503A1 - 中继通信方法及其系统和装置 - Google Patents

中继通信方法及其系统和装置 Download PDF

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Publication number
WO2010105503A1
WO2010105503A1 PCT/CN2010/000316 CN2010000316W WO2010105503A1 WO 2010105503 A1 WO2010105503 A1 WO 2010105503A1 CN 2010000316 W CN2010000316 W CN 2010000316W WO 2010105503 A1 WO2010105503 A1 WO 2010105503A1
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WIPO (PCT)
Prior art keywords
mobile terminal
harq process
relay node
harq
base station
Prior art date
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PCT/CN2010/000316
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English (en)
French (fr)
Inventor
杨涛
Original Assignee
上海贝尔股份有限公司
阿尔卡特朗讯
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Publication date
Application filed by 上海贝尔股份有限公司, 阿尔卡特朗讯 filed Critical 上海贝尔股份有限公司
Priority to EP10753070A priority Critical patent/EP2410666A1/en
Priority to US13/257,170 priority patent/US20120008549A1/en
Priority to KR1020117024263A priority patent/KR101188649B1/ko
Priority to BRPI1009476A priority patent/BRPI1009476A2/pt
Priority to JP2012500042A priority patent/JP5335129B2/ja
Publication of WO2010105503A1 publication Critical patent/WO2010105503A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603Arrangements for wireless physical layer control
    • H04B7/2606Arrangements for base station coverage control, e.g. by using relays in tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/155Ground-based stations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1854Scheduling and prioritising arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092Error control systems characterised by the topology of the transmission link
    • H04L2001/0097Relays

Definitions

  • the present invention relates to the field of relay communications, and more particularly to a method for relaying communications and a system and apparatus therefor. Background technique
  • the RN performs the function of transmitting or receiving data in different subframes, that is, only transmitting or receiving only in the same subframe; for the second mode, the RN is in the different subframes with the base station ( The eNB) or the mobile terminal (UE) communicates, that is, only communicates with the eNB or only with the UE in the same subframe.
  • the eNB base station
  • UE mobile terminal
  • the UE Due to the HARQ mechanism used, for the second mode, when the RN communicates with the eNB, the UE performs an uplink transmission to the RN 'as shown in subframe 8 of the radio frame i of FIG. 9), and this This is not allowed in the second mode.
  • each radio frame subframe 8 is a reserved subframe, that is, except for the first two symbols used for communication with the UE, other symbols in the subframe 8 are only used between the RN and the eNB. Communication.
  • PUSCH physical uplink shared channel
  • a relay communication method for setting a relay node between a base station and a mobile terminal comprising: transmitting a hybrid automatic to a mobile terminal independently of a result of decoding a signal received by the relay node from the mobile terminal A retransmission request (HARQ) process acknowledgement message; the mobile terminal stops the HARQ process according to the HARQ process acknowledgement message.
  • HARQ retransmission request
  • a relay node configured to perform relay communication between the base station and the mobile terminal, comprising: a HARQ stop indication device, configured to instruct to send, independently of a result of decoding, by the relay node, the signal received from the mobile terminal a HARQ process acknowledgement message; the transmitting means, configured to send a HARQ process acknowledgement message to the mobile terminal according to the indication of the HARQ stop indication means, wherein the mobile terminal stops the HARQ process according to the HARQ process acknowledgement message.
  • a HARQ stop indication device configured to instruct to send, independently of a result of decoding, by the relay node, the signal received from the mobile terminal a HARQ process acknowledgement message
  • the transmitting means configured to send a HARQ process acknowledgement message to the mobile terminal according to the indication of the HARQ stop indication means, wherein the mobile terminal stops the HARQ process according to the HARQ process acknowledgement message.
  • a mobile terminal is further provided, configured to communicate with a base station by using a relay node, where the mobile terminal includes: receiving means, configured to receive a HARQ process acknowledgement message from the relay node, where the HARQ process acknowledges the sending of the message and the relay node Irrespective of the result of decoding the signal received from the mobile terminal; the HARQ stopping means is configured to stop the HARQ process according to the HARQ process acknowledgement message received by the receiving device.
  • a communication system comprising a base station, a relay node above, and a mobile terminal for performing relay communication of the mobile terminal with the base station via the relay node.
  • the foregoing solution sends the HARQ acknowledgment message to the mobile terminal, so that the mobile terminal does not perform the HARQ process at the location where the collision may occur, and avoids the communication between the mobile terminal and the relay node and the communication between the relay node and the base station.
  • the conflict thus provides a reliable relay communication system and relay communication method.
  • FIG. 1 is a block diagram showing the structure of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a block diagram showing the relay node in the system of Figure 1;
  • FIG. 3 is a block diagram showing the mobile terminal in the system of Figure 1;
  • FIG. 4 is a flow chart showing a relay communication method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a frame structure for a first mode in a system and method according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a frame structure for a second mode in a system and method according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram showing a frame structure of the prior art for the first mode
  • FIG. 9 shows a schematic diagram of a frame structure for the second mode in the prior art. detailed description
  • FIG. 1 shows a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the system includes a relay node (RN), a mobile terminal (UE), and a base station (eNB), and can perform relay communication of the mobile terminal to the base station via the relay node.
  • RN relay node
  • UE mobile terminal
  • eNB base station
  • Figure 2 is a block schematic diagram of a relay node in the system of Figure 1.
  • Fig. 3 is a block diagram showing the mobile terminal in the system shown in Fig. 1.
  • Figures 2 and 3 are not meant to include other components.
  • the relay node has at least a HARQ stop indication device 210 for instructing to transmit a HARQ process acknowledgement message regardless of a result of decoding the signal received by the relay node from the mobile terminal; the transmitting device 220 is further configured to: The HARQ process confirmation message is transmitted to the mobile terminal according to the indication of the HARQ stop indication device 210.
  • the relay node may further include a HARQ activation indication device 230, configured to: if the relay node does not communicate with the base station, instruct the transmitting device 220 to send an indication to the mobile terminal to reactivate the HARQ process; and the transmitting device 220, configured to activate the indication device according to the HARQ An indication of 230 sends an indication to the mobile terminal to reactivate HARQ process.
  • a HARQ activation indication device 230 configured to: if the relay node does not communicate with the base station, instruct the transmitting device 220 to send an indication to the mobile terminal to reactivate the HARQ process; and the transmitting device 220, configured to activate the indication device according to the HARQ An indication of 230 sends an indication to the mobile terminal to reactivate HARQ process.
  • the mobile terminal at least includes a receiving device 310, configured to receive a HARQ process acknowledgement message from the relay node, where the HARQ process acknowledgement message is transmitted and the relay node decodes the signal received from the mobile terminal.
  • the HARQ stopping device 320 is configured to stop the HARQ process after receiving the HARQ process acknowledgement message received by the receiving device 310.
  • the receiving device 310 is further configured to receive an indication of re-activating the HARQ process from the relay node, where the mobile terminal further includes a HARQ activation device 330, configured to re-activate the HARQ process according to the indication of the re-activation HARQ process received by the receiving device 310.
  • each of the components shown in FIGS. 2 and 3 can be implemented by a plurality of devices in practical applications, showing many The components can also be integrated in a single chip or a device in practical applications.
  • the technical flow of relay communication between the above relay node and mobile terminal is described in detail below.
  • FIG. 4 shows a flow chart of a relay communication method according to an embodiment of the present invention. As shown in FIG. 4: In step 410, the relay node sends a HARQ process acknowledgement message to the mobile terminal.
  • subframe 8 of each radio frame is a reserved subframe, except that the first two symbols are used for communication with the UE, and other symbols in subframe 8 are only used for RN and eNB. Communication between.
  • the reserved subframes can be anywhere in a frame and are not limited to subframe 8. Similarly, more or fewer symbols can be used to communicate with the UE in the reserved subframe.
  • LTE Long Term Evolution
  • the UE should stop its uplink HARQ process until it receives reactivation information from the base station side. Therefore, in the LTE-advanced system, if the RN sends an ACK message, the LTE UE must stop the corresponding uplink HARQ process, which means that if there is no further indication, the compact PUSCH transmission will not be performed after 4 ms.
  • the HARQ stop indication device 210 in the RN instructs the transmitting device 220 to send a HARQ ACK message to the UE, gp, whether the RN sends the HARQ ACK.
  • the information has nothing to do with the result of its decoding. After 4 ms, the HARQ stop device 320 on the UE side will not perform the PUSCH transmission on the HARQ process, as shown in FIG. 5, thereby eliminating the collision occurring in the first mode in the prior art.
  • the HARQ stop indication device 210 in the RN instructs the transmitting device 220 to send a HARQ ACK message to the UE on the reserved subframe.
  • the message may also be sent in other subframes prior to the reserved subframe.
  • the subframe of the selected downlink HARQ ACK message is an integer multiple of 4 ms from the reserved subframe. For example, taking FIG.
  • a HARQ ACK message may also be sent in subframe 0 of radio frame i or subframe 4 of radio frame i, such that 4 ms thereafter (subframe 4 or subframe 8 of radio frame i) Thereafter, the UE's HARQ stop device 320 no longer performs the PUSCH for the HARQ process.
  • the length of one subframe is lms, and 4 ms here corresponds to the length of four subframes.
  • the HARQ stop indication means 210 in the RN may instruct the transmitting device 220 to 4 ms before the reserved subframe (the radio frame i Subframe 4) sends a HARQ ACK message to the UE.
  • the UE's HARQ stop device 320 (on the reserved subframe) will no longer perform PUSCH transmission with respect to HARQ. As shown in Fig. 6, the collision occurring in the second mode in the prior art is thus eliminated.
  • the message may also be sent in other subframes before the subframe 4 of the radio frame i.
  • the subframe distance of the selected HARQ ACK message is reserved.
  • the frame is an integer multiple of 4ms.
  • the HARQ ACK message may also be sent in the 0th subframe, so that after 4 ms (subframe 4 of the radio frame i), the UE's HARQ stop device 320 no longer performs the HARQ process. PUSCH transmission.
  • step 420 after receiving the HARQ process acknowledgement message, the mobile terminal stops the HARQ process.
  • the HARQ stopping device 320 stops the HARQ process. At this time, the UE does not delete the data, but saves the data locally.
  • step 430 if the relay node does not communicate with the base station, an indication is sent to the mobile terminal to reactivate the HARQ process.
  • the HARQ activation instructing means 230 of the RN instructs the transmitting device 220 to send an instruction to the UE to reactivate the HARQ process.
  • the UE's HARQ activation device 330 reactivates the HARQ process according to the instruction received by the receiving device 310. If the decoding result is displayed as a failure, the UE will retransmit the locally corresponding saved data to the RN.
  • the frame length used in the above embodiment of the present invention is 10 ms, including 10 subframes, and each subframe has a length of 1 ms.
  • some embodiments also include a machine readable or computer readable program storage device (eg, a digital data storage medium) and encoding machine executable or computer executable program instructions, wherein the instructions perform the above method Some or all of the steps.
  • the program storage device can be a digital memory, a magnetic storage medium (such as a magnetic disk and magnetic tape), a hardware or an optically readable digital data storage medium.
  • Embodiments also include a programming computer that performs the steps of the above method.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)

Description

中继通信方法及其系统和装置 技术领域
本发明涉及中继通信领域, 特别涉及用于中继通信的方法及其系统和装置。 背景技术
根据当前 3GPP LTE-advanced标准的状态, 在将中继(relay)作为改进系统性 能的一种重要的候选上已达成共识, 其中通过使用中继节点 (RN)来实现中继。 很 多公司已提出带内时分复用 (in-band TDM ) 方案以对蜂窝系统中的中继进行操作。 总的来说, 在提议 R1-084136中提出了两种 TDM操作模式, 如图 7所示。
对于第一种模式, RN在不同的子帧执行数据的发送或接收功能, 即在相同的 子帧只进行发送或只进行接收;对于第二种模式, RN在不同的子帧中与基站(eNB ) 或移动终端 (UE) 进行通信, 即在相同的子帧中只与 eNB通信或只与 UE通信。
对 LTE用户的支持是 LTE-advanced系统非常重要的条件。对于 RN应用来说, 怎样使用 TDM下工作的 RN支持 LTE UE是非常关键的问题。 考虑到用于 LTE UE 操作的上行链路同步混合自动重传请求(HARQ)机制, 针对所提交的 TDM操作原 贝 |J, 存在以下冲突和挑战:
1 ) 由于所使用的 HARQ机制, 对于第一种模式必然存在这样的子帧 (如图 8 无线帧 i+1的子帧 2所示), 其中 RN执行对 eNB的上行链路传输的同时, UE也执 行向 RN的上行链路传输, 此时将导致 RN的自干扰。
2) 由于所使用的 HARQ机制, 对于第二种模式, 当 RN与 eNB进行通信时, UE执行对 RN的上行链路传输 '如图 9的无线帧 i的子帧 8所示) , 而这是第二种 模式所不允许的。
在图 8和图 9中, 每一个无线帧子帧 8为保留子帧, 即除了前两个符号用于与 UE进行通信之外, 子帧 8中的其它符号只用于 RN和 eNB之间的通信。
如图 8所示,对于第一种模式,当保留子帧用于指示 N执行上行链路传输时, 4ms后将执行从 RN到 eNB的物理上行共享信道 (PUSCH) 传输。 同时在 UE侧, 根据同步 HARQ机制,也执行 HARQ进程 0上从 UE到 RN的 PUSCH传输。这样, 对于 RN便产生了自干扰。 类似地, 对于图 9, 当将子帧 (无线帧 i的子帧 8) 用于 eNB和 RN通信时, 也执行 HARQ进程 4上的 PUSCH传输, 这就意味着不能实现第二种模式。
因此, 需要一种能够解决以上问题的方法, 同时不需要对 UE的操作进行任何 改变。 发明内容
本发明的目的在于提供用于中继通信的方法和系统,以消除现有技术出现的冲 突。
提供了用于设置在基站和移动终端之间的中继节点的中继通信方法,该方法包 括: 与中继节点对从移动终端接收到的信号进行解码的结果无关地向移动终端发送 混合自动重传请求 (HARQ) 进程确认消息; 移动终端根据 HARQ进程确认消息停 止 HARQ进程。
还提供了中继节点, 用于在基站和移动终端之间进行中继通信, 包括: HARQ 停止指示装置, 用于与中继节点对从移动终端接收到的信号进行解码的结果无关地 指示发送 HARQ进程确认消息;发送装置,用于根据 HARQ停止指示装置的指示向 移动终端发送 HARQ进程确认消息,其中,移动终端根据 HARQ进程确认消息停止 HARQ进程。
还提供了一种移动终端, 用于通过中继节点与基站进行通信, 移动终端包括: 接收装置, 用于从中继节点接收 HARQ进程确认消息, 其中, HARQ进程确认消息 的发送与中继结点对从移动终端接收到的信号进行解码的结果无关; HARQ停止装 置, 用于根据接收装置接收到的 HARQ进程确认消息, 停止 HARQ进程。
还提供了一种通信系统, 包括基站、 以上的中继节点以及移动终端, 以进行移 动终端经由中继节点与基站的中继通信。
由此可见, 上述技术方案通过向移动终端发送 HARQ确认消息, 使得移动终 端在可能发生冲突的位置不执行 HARQ进程, 避免移动终端和中继节点之间的通信 与中继节点和基站之间通信的冲突, 从而提供了可靠的中继通信系统和中继通信方 法。 ,
同时, 上述技术方案易于实现, 无需移动终端做出改变也无需对 LTE规范做 出修改。 附图说明
根据结合附图的以下描述, 本发明的优点将变得易于理解, 其中:
图 1示出了根据本发明的实施方式的通信系统结构示意图;
图 2示出了图 1所示系统中的中继节点的方框示意图;
图 3示出了图 1所示系统中的移动终端的方框示意图;
图 4示出了根据本发明的实施方式的中继通信方法的流程示意图;
图 5是根据本发明实施方式的系统和方法中针对第一种模式的帧结构示意图; 图 6是根据本发明实施方式的系统和方法中针对第二种模式的帧结构示意图; 图 7示出了现有技术中两种 TDM操作模式的帧结构示意图;
图 8示出了现有技术中针对第一种模式的帧结构示意图;
图 9示出了现有技术中针对第二种模式的帧结构示意图。 具体实施方式
下面参考附图对本发明进行详细描述。
图 1示出了根据本发明的实施方式的通信系统结构示意图。如图 1所示, 该系 统包括中继节点 (RN)、 移动终端(UE) 以及基站 (eNB), 可进行移动终端经由中 继节点到基站的中继通信。
图 2示出了图 1所示系统中的中继节点的方框示意图。图 3示出了图 1所示系 统中的移动终端的方框示意图。 为简洁起见, 图 2和图 3中都只示出了与本发明实 施例相关的组件, 但并不意味着不能包括其它组件。
图 2是根据本发明的实施方式的中继节点的结构示意图,中继节点用于在基站 和移动终端之间进行中继通信。 如图 2所示, 中继节点至少具备 HARQ停止指示装 置 210, 用于与中继节点对从移动终端接收到的信号进行解码的结果无关地指示发 送 HARQ进程确认消息;发送装置 220还用于根据 HARQ停止指示装置 210的指示 向移动终端发送 HARQ进程确认消息。
中继节点还可以包括 HARQ激活指示装置 230,用于如果中继节点没有和基站 进行通信, 指示发送装置 220向移动终端发送指示以重新激活 HARQ进程; 发送装 置 220, 用于根据 HARQ激活指示装置 230的指示向移动终端发送指示以重新激活 HARQ进程。
图 3是根据本发明的实施方式的移动终端的结构示意图,移动终端用于通过中 继节点与基站进行通信。 如图 3所示, 移动终端至少具备接收装置 310, 用于从中 继节点接收 HARQ进程确认消息, 其中, HARQ进程确认消息的发送与中继结点对 从移动终端接收到的信号进行解码的结果无关; HARQ停止装置 320, 用于收到接 收装置 310接收到的 HARQ进程确认消息后, 停止 HARQ进程。
其中接收装置 310还用于从中继节点接收重新激活 HARQ进程的指示, 移动 终端还包括 HARQ激活装置 330, 用于根据接收装置 310接收到的重新激活 HARQ 进程的指示, 重新激活 HARQ进程。
虽然上面以分离的功能模块的形式描述了该实施例的中继节点和移动终端,但 是图 2和图 3中示出的每一个组件在实际应用中可以用多个器件实现, 示出的多个 组件在实际应用中也可以集成在一块芯片或一个设备中。 下面对上述中继节点和移 动终端交互实现中继通信的技术流程做一个详细的阐述。
图 4示出了根据本发明的实施方式的中继通信方法的流程示意图。如图 4所示: 在步骤 410中, 中继节点向移动终端发送 HARQ进程确认消息。
图 5和图 6是本发明实施方式的系统和方法中分别针对第一种模式和第二种模 式的帧结构示意图。在图 5和图 6中, 同样假定每一个无线帧的子帧 8为保留子帧, 除了前两个符号用于与 UE进行通信之外, 子帧 8中的其它符号只用于 RN和 eNB 之间的通信。 当然, 本领域普通技术人员应该理解, 保留子帧可以在一帧中的任何 位置而不限于在子帧 8。同理,在保留子帧中也可以使用更多或更少的符号与 UE进 行通信。
在 LTE中, 定义如果接收到 ACK消息, UE应停止其上行链路 HARQ进程, 直到从基站侧接收到重新激活信息为止。 因此, 在 LTE-advanced系统中, 如果 RN 下发 ACK消息, LTE UE必须停止对应的上行链路 HARQ进程,这意味着如果没有 进一步的指示, 4ms后将不执行紧凑 (compacted) PUSCH传输。
在本发明的实施方式中,基于此 LTE UE操作原则,对于 TDM的第一种模式, 在用于 eNB和 RN通信的子帧(无线帧 i的子帧 8 )期间, 不管 RN对从 UE接收到 的信号进行解码的解码结果是成功还是失败, RN中的 HARQ停止指示装置 210都 指示发送装置 220向 UE下发 HARQ ACK消息, gp, RN是否下发 HARQ ACK消 息与其解码的结果无关。 4ms之后, UE侧的 HARQ停止装置 320将不再执行关于 HARQ进程的 PUSCH传输, 如图 5所示, 由此消除了现有技术中第一种模式下发 生的冲突。
在上述步骤中, RN中的 HARQ停止指示装置 210指示发送装置 220在保留子 帧上向 UE下发 HARQ ACK消息。然而在其它实施方式中, 也可以在保留子帧之前 的其它子帧发送该消息, 优选地, 所选下发 HARQ ACK消息的子帧距离保留子帧 4ms的整数倍。 例如, 以图 5为例, 也可以在无线帧 i的子帧 0或无线帧 i的子帧 4 下发 HARQ ACK消息, 这样在其后 4ms (无线帧 i的子帧 4或子帧 8) 后, UE的 HARQ停止装置 320不再执行关于 HARQ进程的 PUSCH。 根据本发明实施方式所 釆用的帧结构, 1个子帧的长度为 lms, 这里的 4ms对应 4个子帧的长度。
类似地, 对于第二种模式, 为了避免用于 eNB和 RN传输的保留子帧上的 PUSCH传输, RN中的 HARQ停止指示装置 210可以指示发送装置 220在保留子帧 之前 4ms (无线帧 i的子帧 4) 便向 UE下发 HARQ ACK消息, 4ms之后, UE的 HARQ停止装置 320 (在保留子帧上)将不再执行关于 HARQ进行的 PUSCH传输。 如图 6所示, 由此消除了现有技术中第二种模式下发生的冲突。
同理, 针对第二种模式, 在其它实施方式中, 也可以在无线帧 i的子帧 4之前 的其它子帧发送该消息, 优选地, 所选下发 HARQ ACK消息的子帧距离保留子帧 4ms的整数倍。 例如, 以图 5为例, 也可以在第 0个子帧下发 HARQ ACK消息, 这 样在其后 4ms (无线帧 i的子帧 4) 后, UE的 HARQ停止装置 320不再执行关于 HARQ进程的 PUSCH传输。
在步骤 420中, 收到 HARQ进程确认消息后, 移动终端停止 HARQ进程。 如上所述, 当 UE的接收装置 310接收到 HARQ ACK消息后, HARQ停止装 置 320停止 HARQ进程。 此时 UE不删除数据, 而是将数据在本地保存。
可选地, 在步骤 430中, 如果中继节点没有和基站进行通信, 向移动终端发送 指示以重新激活 HARQ进程。
如果在当前子帧中没有和 eNB进行通信, RN的 HARQ激活指示装置 230指 示发送装置 220向 UE发送重新激活 HARQ进程的指令。在步骤 440中,UE的 HARQ 激活装置 330根据接收装置 310接收到的指令重新激活 HARQ进程, 此时如果解码 结果显示为失败, UE会将本地对应保存的数据重发到 RN。 上述本发明的实施方式中使用的帧长度为 10ms, 包括 10个子帧, 每一子帧长 度为 lms。 但是, 本领域普通技术人员应该理解, 如果子帧数目、 帧或子帧的长度 发生变化, 本发明实施方式公幵的方法和系统仍可用于实现中继通信, 此时只需将 上述提到的 4ms按照新的帧结构要求相应变化即可。
本领域技术人员应该很容易认识到,可以通过编程计算机实现上述方法的不同 步骤。 在此, 一些实施方式同样包括机器可读或计算机可读的程序存储设备 (如, 数字数据存储介质) 以及编码机器可执行或计算机可执行的程序指令, 其中, 所述 指令执行所述上述方法的一些或全部步骤。例如, 程序存储设备可以是数字存储器、 磁存储介质 (如磁盘和磁带) 、 硬件或光可读数字数据存储介质。 实施方式同样包 括执行上述方法的所述步骤的编程计算机。
描述和附图仅示出本发明的原理。因此应该意识到, 本领域技术人员能够建议 不同的结构, 虽然这些不同的结构未在此处明确描述或示出, 但体现了本发明的原 理并包括在其精神和范围之内。 此外, 所有此处提到的示例明确地主要只用于教学 目的以帮助读者理解本发明的原理以及发明人所贡献的促进本领域的构思, 并应被 解释为不是对这些特定提到的示例和条件的限制。 此外, 此处所有提到本发明的原 贝 |J、 方面和实施方式的陈述及其特定的示例包含其等同物在内。
上面的描述仅用于实现本发明的实施方式, 本领域的技术人员应该理解, 在不 脱离本发明的范围的任何修改或局部替换, 均应该属于本发明的权利要求来限定的 范围, 因此, 本发明的保护范围应该以权利要求书的保护范围为准。

Claims

权 利 要 求
1、 一种用于设置在基站和移动终端之间的中继节点的中继通信方法, 包括- 与中继节点对从移动终端接收到的信号进行解码的结果无关地向所述移动终 端发送混合自动重传请求 (HARQ) 进程确认消息;
所述移动终端根据所述 HARQ进程确认消息停止 HARQ进程。
2、 根据权利要求 1所述的中继通信方法, 还包括:
如果所述中继节点没有和所述基站进行通信,向所述移动终端发送指示以重新 激活 HARQ进程;
所述移动终端根据所述指示重新激活所述 HARQ进程。
3、 根据权利要求 1或 2所述的方法, 其中, 所述中继节点和所述基站、 所述 移动终端之间通过通信帧进行通信, 并且所述通信帧包含保留子帧, 其中, 向所述 移动终端发送 HARQ进程确认消息的步骤包括在所述保留子帧或在所述保留子帧之 前第一预定时间的位置, 向所述移动终端发送 HARQ进程确认消息。
4、 根据权利要求 3所述的方法, 其中, 所述第一预定时间为 4个子帧长度的 整数倍。
5、 根据权利要求 4所述的方法, 其中, 所述移动终端根据 HARQ进程确认消 息停止 HARQ进程的步骤包括所述移动终端在收到所述 HARQ进程确认消息第二预 定时间后停止 HARQ进程。
6、 根据权利要求 5所述的方法, 其中, 所述第二预定时间为 4个子帧长度。
7、 一种中继节点, 用于在基站和移动终端之间进行中继通信, 包括: HARQ停止指示装置,用于与中继节点对从移动终端接收到的信号进行解码的 结果无关地指示发送 HARQ进程确认消息;
发送装置, 用于根据所述 HARQ 停止指示装置的指示向所述移动终端发送 HARQ进程确认消息,
其中, 所述移动终端根据所述 HARQ进程确认消息停止 HARQ进程。
8、 根据权利要求 7所述的中继节点, 还包括-
HARQ激活指示装置, 用于如果中继节点没有和所述基站进行通信, 指示所述 发送装置向所述移动终端发送指示以重新激活 HARQ进程。
9、 一种移动终端, 用于通过中继节点与基站进行通信, 所述移动终端包括: 接收装置,用于从所述中继节点接收 HARQ进程确认消息,其中,所述 HARQ 进程确认消息的发送与中继结点对从移动终端接收到的信号进行解码的结果无关;
HARQ停止装置, 用于根据所述接收装置接收到的 HARQ进程确认消息, 停 止 HARQ进程。
10、 根据权利要求 9所述的移动终端, 其中, 所述接收装置还用于从中继节点 接收重新激活 HARQ进程的指示,
所述移动终端还包括:
HARQ激活装置, 用于根据所述接收装置接收到的重新激活 HARQ进程的指 示, 重新激活 HARQ进程。
11、 一种通信系统, 包括基站、 根据权利要求 7或 8所述的中继节点以及根据权 利要求 9或 10所述的移动终端,以进行所述移动终端经由所述中继节点与所述基站的 中继通信。
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