WO2010111840A1 - 一种确定重传数据的方法、中继及用户设备 - Google Patents

一种确定重传数据的方法、中继及用户设备 Download PDF

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Publication number
WO2010111840A1
WO2010111840A1 PCT/CN2009/071159 CN2009071159W WO2010111840A1 WO 2010111840 A1 WO2010111840 A1 WO 2010111840A1 CN 2009071159 W CN2009071159 W CN 2009071159W WO 2010111840 A1 WO2010111840 A1 WO 2010111840A1
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WIPO (PCT)
Prior art keywords
subframe
relay
data
subframes
base station
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PCT/CN2009/071159
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English (en)
French (fr)
Inventor
郑娟
白伟
万蕾
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2009/071159 priority Critical patent/WO2010111840A1/zh
Publication of WO2010111840A1 publication Critical patent/WO2010111840A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0097—Relays

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method, a relay, and a user equipment for determining retransmission data.
  • the wireless connection between the base station and the mobile station is a direct wireless connection.
  • one or more relays are added between the base station and the mobile station, and the relay performs amplification, decoding, and the like on the received source signal, and then forwards it to the UE (User Equipment, user). Equipment) to improve the signal reception performance of the UE.
  • UE User Equipment, user
  • the Broadcast Single Frequency Network (CDMA) sub-frame is used to solve the problem, that is, in the MBSFN subframe, the base station communicates with the relay, and in other subframes, the relay communicates with the UE.
  • CDMA Broadcast Single Frequency Network
  • subframes #1, #17, and #33 are configured as MBSFN subframes, and the relays feed back ACKs (Acknowledgment)/NACK (Negative Acknowledgment) to the base stations in subframes #5, #21, and #37. Negative response), on subframes #1, #17, and #33, the relay stops transmitting downlink data to the UE, but only transmits control signaling, etc.; subframes #5, #21, and #37 are used for relay and base station. Communication, so the relay does not receive the uplink data from the UE, so that the self-interference problem of the relay can be solved.
  • the uplink HARQ Hybrid Auto Repeat Request
  • the UE uploads data in the subframe #13
  • the relay feeds back NACK in the subframe #17, UE
  • the UE needs to retransmit data on subframe #21, but subframe #21 is used for communication between the base station and the relay. Therefore, although the UE retransmits the uplink data by using the subframe, the relay is Subframe #21 does not receive the uplink data of the UE, so the relay of subframe #25 does not perform ACK/NACK feedback on the uplink data of the UE, so that the UE will receive the received noise or interference signal in subframe #25.
  • the UE will consider that the data retransmitted in subframe # 21 has been correctly received by the relay, so that the UE will not retransmit the subframe.
  • the data to be retransmitted thereby destroying the timing relationship of the uplink synchronization HARQ of the UE, affecting the uplink HARQ process of the UE.
  • the embodiment of the present invention provides a determination. Method of retransmitting data, relay, and user equipment. The technical solution is as follows:
  • An embodiment of the present invention provides a method for determining retransmission data, where the method includes:
  • the UE When the UE retransmits the data in the subframe in which the relay communicates with the base station, the UE receives the negative acknowledgement NACK from the UE after receiving the negative acknowledgement NACK to the UE in the preset number of subframes after the subframe, in the preset number. The data is retransmitted to the relay on the subframe.
  • An embodiment of the present invention provides a method for determining retransmission data, where the method includes:
  • the relay feeds back a negative acknowledgement NACK to the UE in a preset number of subframes after the subframe, so that the UE is in the preset number.
  • the data is retransmitted to the relay on the subframe.
  • An embodiment of the present invention provides a method for determining retransmission data, where the method includes:
  • the UE When the UE retransmits the data in the subframe in which the relay communicates with the base station, the message to be transmitted is punched in the subframe, and the data is retransmitted to the relay in a preset number of subframes.
  • An embodiment of the present invention provides a user equipment, where the user equipment includes: a receiving module and a retransmission module, where the receiving module is configured to receive the relay when the UE retransmits data in a subframe in which the relay communicates with the base station. a negative acknowledgement NACK fed back to the UE in a preset number of subframes after the subframe;
  • the retransmission module is configured to: after the receiving module receives the NACK, retransmit data to the relay in the preset number of subframes.
  • An embodiment of the present invention provides a relay, where the relay includes: a feedback module;
  • the feedback module is configured to: when the UE retransmits the data in the subframe in which the relay communicates with the base station, the relay feeds back a negative acknowledgement NACK to the UE in a preset number of subframes after the subframe, so that the UE Data is retransmitted to the relay on the preset number of subframes.
  • An embodiment of the present invention provides a user equipment, where the user equipment includes: a puncturing module and a retransmission module; the puncturing module is configured to: when the UE retransmits data in a subframe in which the relay communicates with the base station, Punching a message to be sent on the frame;
  • the retransmission module is configured to retransmit data to the relay on a preset number of subframes after the punching module punches the message to be sent.
  • the technical solution provided by the embodiment of the present invention has the beneficial effects that: when the UE needs to retransmit data in a subframe in which the relay communicates with the base station, the relay automatically feeds back the NACK to the UE in a preset number of subframes after the subframe. And causing the UE to not retransmit data on the subframe in which the relay communicates with the base station, and retransmit the data to the relay on the preset number of subframes; or punch holes in the subframes of the base station and the relay communication
  • the message to be sent is not uploaded on the subframe of the base station and the relay communication, and the data is retransmitted to the relay on the preset number of subframes after the subframe, and the MBSFN is solved.
  • the impact of the configuration on the uplink HARQ of the UE ensures the timing relationship of the uplink synchronization HARQ of the UE.
  • FIG. 1 is a schematic diagram of the impact of the frame structure and the configuration of the MBSFN subframe on the UE uplink HARQ in the prior art
  • FIG. 2 is a schematic diagram of the MBSFN subframe configuration provided in the first embodiment of the present invention having no impact on the uplink HARQ of the UE
  • FIG. 4 is a schematic structural diagram of a user equipment according to Embodiment 4 of the present invention
  • FIG. 4 is a schematic diagram of a structure of a user equipment according to Embodiment 4 of the present invention
  • FIG. 5 is a schematic diagram of a relay structure according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic structural diagram of a user equipment according to Embodiment 6 of the present invention. detailed description
  • An embodiment of the present invention provides a method for determining retransmission data, where the method includes:
  • the UE When the UE retransmits the data in the subframe in which the relay communicates with the base station, the UE receives the subframe, and after receiving the negative acknowledgement NACK to the UE in the preset subframe, the subframe is in the preset number of subframes. Retransmit data to the upstream trunk.
  • the subframe numbers in this embodiment are incremented by lms, but are not limited to incrementing the subframe numbers at other time intervals.
  • the first radio frame is subframe #0 to #9
  • the subframes #0 to #9 in the second radio frame may be referred to as subframe #10 to #19
  • 3 Subframes #0 to #9 in the radio frames may be referred to as subframes #20 to #29
  • subframes #0 to #9 in the fourth radio frame may be referred to as subframes #30 to #39
  • the example also takes a period of 40 ms, that is, the next subframe of subframe #39 is subframe #0.
  • the embodiment of the present invention is described by taking an example of an MBSFN subframe configuration period of 8 ms, but is applicable to any MBSFN subframe configuration. If subframe #1 is configured as an MBSFN subframe, with a period of 8 ms, the next MBSFN subframe of subframe #1 should be subframe #9, but since the subframe in each radio frame is specified in the FDD system #0, subframe #4, subframe #5 and subframe #9 cannot be configured as MBSFN subframes, so after an interval of 8 ms after subframe #9, the next MBSFN subframe of subframe #1 is a subframe.
  • Subframe #17 (Subframe #7 in the second radio frame), after an interval of 8 ms after subframe #17, the next MBSFN subframe of subframe #17 should be subframe #25 (3rd wireless)
  • Subframe #5 in the frame since the specified subframe #5 cannot be configured as an MBSFN subframe, an additional 8 ms period is required after the subframe #25, that is, the next MBSFN subframe of the subframe #17 is a sub-frame.
  • Frame #33 (subframe #3 in the fourth radio frame), so in the present embodiment, the configured MBSFN subframes are subframes #1, #17, and #33.
  • subframes #1, #17, and #33 are configured as MBSFN subframes, and the base station communicates with the relay on subframes #1, #17, and #33, and relay reception.
  • Downlink data transmitted by the base station but if the relay simultaneously receives data transmitted by the base station to the relay and transmits data to the UE at the same frequency, the data transmitted by the relay to the UE may interfere with the data received by the relay from the base station, so
  • the relay stops lh transmitting downlink data to the UE, transmitting only control signaling, and considering the backward compatibility of the UE, relaying in subframes #5, #21 and #37 feeds back ACK/NACK to the base station.
  • subframe #5, #21, and #37 the UE can send uplink data to the relay, but because subframes #5, #21, and #37 are used for relay and base station. Communication between the relays does not receive uplink data of the UE.
  • the UE uploads the data to the relay in the subframe #13 the NACK feedback of the relay is received in the subframe #17.
  • the data needs to be retransmitted on the subframe #21, because the subframe #5, #21 ⁇ #37 are configured to relay the uplink subframe to which the ACK/NACK is fed back to the base station, that is, the subframe #21 is a subframe in which the relay communicates with the base station, and the relay does not receive the UE retransmission on the subframe #21.
  • the uplink data is forwarded to the UE in the preset number of subframes after the subframe #21, and the number of presets is 4, but not limited to 4, subframe #21.
  • the NACK is automatically fed back to the UE on the subframe #25.
  • the UE can be on the preset number of subframes after the subframe #25.
  • Retransmitting the uplink data to the relay taking the preset number 4 as an example, and the fourth subframe after the subframe #25 is the subframe #29, and retransmitting the uplink data to the relay on the subframe #29, if The data uploaded by the UE in subframe #29 needs to be retransmitted on subframe #37, but since subframe #37 has been set as an uplink subframe for relaying ACK/NAK to the base station, that is, subframe #37 is a subframe in which a relay communicates with a base station, relaying If the uplink data of the retransmission by the UE is not received on the subframe #37, the relay automatically feeds back the NACK to the UE in the fourth subframe after the subframe #37, that is, after the UE receives the NACK.
  • the fourth subframe after subframe #1 retransmits the uplink data, but since subframe #5 has been set to relay the uplink subframe for feeding back ACK/NAK to the base station, the relay is in the subframe. If the uplink data of the retransmission by the UE is not received on the frame #5, the fourth subframe after the subframe #5 is relayed, that is, the NACK is automatically fed back to the UE on the subframe #9, and after receiving the NACK, the UE receives the NACK.
  • the uplink data may be retransmitted to the relay on the fourth subframe after the subframe #9, that is, the subframe #13, and so on, until the UE successfully retransmits the uplink data to the relay.
  • the first row indicates the subframe configured as MBSFN in the first radio frame with a period of 40 ms; the second row indicates the subframe number of the MBSFN configuration in 40 ms; the third row indicates the relay in 40 ms.
  • the ACK/NACK is fed back to the base station on the subframes; the fourth line mn indicates that if the data that the UE uploads to the relay in the subframe m needs to be retransmitted, the relay automatically feeds back the NACK to the UE on the subframe n;
  • the third column in Table 1 is when the MBSFN subframe in the first radio frame is set to 2, and the configured MBSFN subframes are subframes #2, #18, and #26, and the relay feeds back to the base station.
  • the subframes are subframes #6, #22, and #30.
  • subframe #14 If the data uploaded by the UE to the relay in subframe #14 needs to be retransmitted in subframe #22, but since subframe #22 has been configured to relay to the base station Subsequent feedback, so the UE receives the NACK of the relay feedback on subframe #26, and then the UE retransmits to the relay on subframe #30 The data, but since subframe #30 is also configured to relay the subframes fed back to the base station, the UE receives the NACK of the relay feedback on subframe #34, and then the UE needs to retransmit to the relay in subframe #38.
  • the beneficial effects of the embodiment of the present invention are: when the UE retransmits data in a subframe in which the relay communicates with the base station, the receiving relay sends a negative acknowledgement NACK to the UE in a preset number of subframes after the subframe, and then the UE The data is not retransmitted on the subframe in which the relay communicates with the base station, and the data is retransmitted to the relay in the preset number of subframes. Therefore, the impact of the configuration of the MBSFN on the uplink HARQ of the UE is solved, and the UE is guaranteed.
  • An embodiment of the present invention provides a method for determining retransmission data, where the method includes:
  • the relay feeds back a negative acknowledgement NACK to the UE in a predetermined number of subframes after the subframe, so that the UE is in the preset number of subframes. Retransmit data to the upstream trunk.
  • the beneficial effects of the embodiment of the present invention are: when the UE needs to retransmit data in a subframe in which the relay communicates with the base station, the relay automatically feeds back the NACK to the UE in a preset number of subframes after the subframe, so that the UE is in the UE.
  • the data is not retransmitted on the subframe in which the relay communicates with the base station, and the data is retransmitted to the relay in the preset number of subframes. Therefore, the impact of the configuration of the MBSFN on the uplink HARQ of the UE is solved, and the uplink of the UE is ensured. Synchronize the timing relationship of HARQ.
  • An embodiment of the present invention provides a method for determining retransmission data, where the method includes:
  • the UE When the UE retransmits the data in the subframe in which the relay communicates with the base station, the UE punctured the message to be sent on the subframe, and retransmits the data to the relay on the preset number of subframes after the subframe.
  • the message to be sent includes but is not limited to: retransmitted data, reported CQI (Channel
  • Quality Indicator Channel Quality Indicator
  • SRS Sounding Reference Signal
  • RACH Random Access Channel
  • the subframe numbers in this embodiment are incremented by lms, but are not limited to incrementing the subframe numbers at other time intervals.
  • the first radio frame is subframe #0 to #9
  • the subframes #0 to #9 in the second radio frame may be referred to as subframe #10 to #19
  • Subframes #0 to #9 in the radio frames may be referred to as subframes #20 to #29
  • subframes #0 to #9 in the fourth radio frame may be referred to as subframes #30 to #39
  • the example also takes a period of 40 ms, that is, the next subframe of subframe #39 is subframe #0.
  • the configuration period of the MBSFN subframe is 8 ms as an example, but it is applicable to the subframe configuration of any MBSFN. If subframe #2 is configured as an MBSFN subframe, with a period of 8 ms, the next MBSFN subframe of subframe #2 should be subframe #10 (subframe #0 in the second radio frame), subframe # 10 is the subframe #0 in the second radio frame, but since in the FDD system, it is specified that subframe #0, subframe #4, subframe #5, and subframe #9 in each radio frame cannot be configured as The MBSFN subframe is therefore separated by an 8 ms period after the subframe #10, and the next MBSFN subframe of the subframe #10 is the subframe #18 (subframe #8 in the second radio frame), the subframe # After 18 and then an interval of 8 ms, the next MBSFN subframe of subframe #18 is subframe #26 (subframe #6 in the third radio frame), and after an interval of 8 ms
  • subframes #2, #18, and #26 are configured as MBSFN subframes, and the base station communicates with the relay on subframes #2, #18, and #26, and receives the relay.
  • Downlink data transmitted by the base station but if the relay simultaneously receives data of the base station and transmits data to the UE at the same frequency, the data transmitted by the relay to the UE may interfere with the data received by the relay from the base station, and therefore in the subframe # 2, on #18 and #26, the relay stops transmitting downlink data to the UE, but only transmits control signaling, and in consideration of backward compatibility of the UE, relays to subframes #6, #22, and #30 to the base station.
  • the relay feeds back ACK/NACK to the base station on the subframe #22,
  • the UE does not receive the retransmitted uplink data, and the UE puncturing the message to be transmitted on the subframe #22, and then the UE retransmits the uplink data to the relay on the preset number of subframes after the subframe #22.
  • the number of preset subframes is 8.
  • the eighth subframe after subframe #22 is #30, and the data is retransmitted to the relay on subframe #30, but Since subframe #30 is also used for relaying ACK/NACK to the base station, that is, subframe #30 is a subframe in which the relay communicates with the base station, and the relay does not receive the uplink data retransmitted by the UE on the subframe #30. Then, the UE punctured the message to be sent on the subframe #30, and then the UE retransmits the uplink data to the relay on the preset number of subframes after the subframe #30, that is, the UE is in the subframe #30. After the 8th subframe, the uplink data is retransmitted to the relay on subframe #38; and so on, until the UE successfully retransmits the uplink data to the relay.
  • subframe #30 is a subframe in which the relay communicates with the base station, and the relay does not receive the uplink data retransmitted by the
  • the first row indicates the subframe configured as MBSFN in the first radio frame with a period of 40 ms; the second row indicates the subframe number of the MBSFN configuration in 40 ms; the third row indicates the relay in 40 ms.
  • the subframe number fed back to the base station; the fourth line mn indicates that if the data that the UE uploads to the relay in the subframe m needs to be retransmitted, the UE punches the message to be transmitted on the subframe n.
  • the second column in Table 2 is when the MBSFN subframe in the first radio frame is set to 1, and the configured MBSFN subframes are subframes #1, #17, and #33, and the relay feeds back to the base station.
  • the subframes are subframes #5, #21, and #37.
  • the case where the MBSFN subframe is set to other values is similar.
  • Table 2 m indicates that the UE punches a message to be transmitted on the subframe m, and n indicates that the UE needs to retransmit the data on the subframe n.
  • an embodiment of the present invention provides a user equipment, where the user equipment includes: a receiving module 401 and a retransmission module 402;
  • the receiving module 401 is configured to: when the UE retransmits the data in the subframe in which the relay communicates with the base station, receive a negative acknowledgement NACK that is relayed to the UE in a subframe that is preset after the subframe;
  • the retransmission module 402 is configured to: after the receiving module 401 receives the NACK, retransmit the data to the relay on the preset number of subframes.
  • the beneficial effects of the embodiment of the present invention are: when the UE retransmits data in a subframe in which the relay communicates with the base station, the receiving relay sends a negative acknowledgement NACK to the UE in a preset number of subframes after the subframe, and then the UE The data is not retransmitted on the subframe in which the relay communicates with the base station, and the data is retransmitted to the relay in the preset number of subframes. Therefore, the impact of the configuration of the MBSFN on the uplink HARQ of the UE is solved, and the UE is guaranteed.
  • an embodiment of the present invention provides a relay, where the relay includes: a feedback module 501;
  • the feedback module 501 is configured to: when the UE retransmits the data in the subframe that the UE communicates with the base station, the relay sends a negative acknowledgement NACK to the UE in a preset number of subframes after the subframe, so that the UE is in the pre- Set a number of sub-frames to retransmit data to the relay.
  • the beneficial effects of the embodiment of the present invention are: when the UE needs to retransmit data in a subframe in which the relay communicates with the base station, the relay automatically feeds back the NACK to the UE in a preset number of subframes after the subframe, so that the UE is in the UE.
  • the data is not retransmitted on the subframe in which the relay communicates with the base station, and the data is retransmitted to the relay in the preset number of subframes. Therefore, the impact of the configuration of the MBSFN on the uplink HARQ of the UE is solved, and the uplink of the UE is ensured. Synchronize the timing relationship of HARQ.
  • the embodiment of the present invention provides a user equipment, where the user equipment includes: a punching module 601 and a retransmission module 602;
  • the puncturing module 601 is configured to: when the UE retransmits data in a subframe in which the relay communicates with the base station, punching a hole to be sent in the subframe News
  • the punching represents no transmission.
  • the message to be sent includes but is not limited to: retransmitted data information, reported CQI information, sent SRS and RACH information.
  • the retransmission module 602 is configured to: after the punching module 601 punches the message to be sent, retransmit the data to the relay on the preset number of subframes after the foregoing subframe.
  • the beneficial effects of the embodiment of the present invention are: by punching a message to be sent on a subframe of the base station and the relay communication, so that the message to be sent is not uploaded on the base station and the subframe of the relay communication, and The subframes are retransmitted to the relays in a preset number of subframes, which solves the impact of the configuration of the MBSFN on the uplink HARQ of the UE, and ensures the timing relationship of the uplink synchronization HARQ of the UE.
  • Embodiments of the invention may be implemented in software, and the corresponding software program may be stored in a readable storage medium, such as a hard disk, a cache, or an optical disk of a computer.
  • a readable storage medium such as a hard disk, a cache, or an optical disk of a computer.

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Description

种确定重传数据的方法、 中继及用户设备 技术领域
本发明涉及无线通信领域， 特别涉及一种确定重传数据的方法、 中继及用户设备。
背景技术
在传统的峰窝网络中， 基站与移说动台之间的无线连接是直接的无线连接。 随着移动通信 技术的发展， 在基站与移动台之间增加了一个或多个中继， 中继对接收到的信源信号进行放 大、译码等处理， 然后转发给 UE (User Equipment, 用户设备）， 以提高 UE的信号接收性能。
但是如果中继同时以相同的频率接收基站的数据和向 UE发送数据， 则中继向 UE发送 的数据会对中继从基站接收的数据造成干扰， 现有技书术可以通过配置 MBSFN (Multicast Broadcast Single Frequency Network, 多播广播单频网络）子帧来解决， 即在 MBSFN子帧上， 基站与中继通信， 而在其他子帧， 中继与 UE通信。 参见图 1， 子帧 #1、 #17和 #33 配置为 MBSFN子帧， 则中继在子帧 #5、 #21和 #37向基站反馈 ACK (Acknowledgment, 确认应答） /NACK (Negative Acknowledgment, 否定应答）， 在子帧 #1、 #17和 #33上， 中继停止向 UE 发送下行数据， 而只发送控制信令等； 子帧 #5, #21和 #37用于中继与基站通信， 因此中继不 接收来在 UE的上行数据， 这样就可以解决中继的自干扰问题。
在对上述现有技术进行分析后， 发明人发现：
由于 UE的上行 HARQ (Hybrid Auto Repeat Request,混合自动重传请求）必须是同歩的， 如图 1所示， 如果 UE在子帧 #13上传数据， 若中继在子帧 #17反馈 NACK给 UE， 则该 UE 需要在子帧 #21上重传数据， 但子帧 #21用于基站与中继之间的通信， 因此， UE虽利用该子 帧重传上行数据， 但中继由于在子帧 # 21没有接收 UE的上行数据， 因此在子帧 # 25中继就 不会对 UE的上行数据进行 ACK/NACK的反馈，这样 UE在子帧 # 25会从收到的噪声或者干 扰信号中检测出 ACK/NACK, 若此时 UE错误地检测出 ACK信号， 则 UE会认为在子帧 # 21重传的数据已被中继正确接收， 这样 UE就不会再重传在子帧 #21待重传的数据， 从而破 坏了 UE上行同步 HARQ的时序关系， 影响了 UE的上行 HARQ过程。 发明内容
为了解决由于 MBSFN的配置对 UE上行 HARQ的影响， 本发明实施例提供了一种确定 重传数据的方法、 中继及用户设备。 所述技术方案如下：
本发明实施例提供了一种确定重传数据的方法， 该方法包括：
UE在中继与基站通信的子帧上重传数据时，该 UE接收该中继在该子帧后预设个数的子 帧上向该 UE反馈否定应答 NACK后， 在该预设个数的子帧上向该中继重传数据。
本发明实施例提供了一种确定重传数据的方法， 该方法包括：
UE在中继与基站通信的子帧上重传数据时， 该中继在该子帧后预设个数的子帧上向该 UE反馈否定应答 NACK, 以使得该 UE在该预设个数的子帧上向该中继重传数据。
本发明实施例提供了一种确定重传数据的方法， 该方法包括：
UE在中继与基站通信的子帧上重传数据时，在该子帧上打孔待发送的消息， 并在预设个 数的子帧上向该中继重传数据。
本发明实施例提供了一种用户设备， 该用户设备包括： 接收模块和重传模块； 该接收模块， 用于 UE在中继与基站通信的子帧上重传数据时， 接收该中继在该子帧后 预设个数的子帧上向该 UE反馈的否定应答 NACK;
该重传模块， 用于该接收模块接收到该 NACK后， 在该预设个数的子帧上向该中继重传 数据。
本发明实施例提供了一种中继， 该中继包括： 反馈模块；
该反馈模块， 用于 UE在中继与基站通信的子帧上重传数据时， 该中继在该子帧后预设 个数的子帧上向该 UE反馈否定应答 NACK, 以使得该 UE在该预设个数的子帧上向该中继 重传数据。
本发明实施例提供了一种用户设备， 该用户设备包括： 打孔模块和重传模块； 该打孔模块， 用于 UE在中继与基站通信的子帧上重传数据时， 在该子帧上打孔待发送 的消息；
该重传模块， 用于该打孔模块打孔完待发送的消息后， 在预设个数的子帧上向该中继重 传数据。
本发明实施例提供的技术方案的有益效果是: UE需要在中继与基站通信的子帧上重传数 据时， 中继在该子帧后预设个数的子帧上向 UE 自动反馈 NACK, 使 UE在中继与基站通信 的子帧上不重传数据， 而在该预设个数的子帧上向中继重传数据； 或者通过在基站和中继通 信的子帧上打孔待发送的消息， 使该待发送的消息在基站和中继通信的子帧上不进行上传， 而在该子帧后预设个数的子帧上向中继重传数据， 解决了由于 MBSFN 的配置对 UE 上行 HARQ的影响， 保证了 UE上行同步 HARQ的时序关系。 附图说明
图 1是现有技术中帧结构及 MBSFN子帧的配置对 UE上行 HARQ的影响示意图； 图 2是本发明实施例 1提供的 MBSFN子帧配置后对 UE上行 HARQ不影响的示意图； 图 3是本发明实施例 3提供的 MBSFN子帧配置后对 UE上行 HARQ不影响的示意图； 图 4是本发明实施例 4提供的一种用户设备结构示意图；
图 5是本发明实施例 5提供的一种中继结构示意图；
图 6是本发明实施例 6提供的一种用户设备结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚， 下面将结合附图对本发明实施方式作进 一步地详细描述。
实施例 1
本发明实施例提供了一种确定重传数据的方法， 该方法包括：
UE在中继与基站通信的子帧上重传数据时， UE接收中继在该子帧后预设个数的子帧上 向 UE反馈否定应答 NACK后， 在该预设个数的子帧上向中继重传数据。
参见图 2， 本实施例中的子帧编号以 lms间隔递增， 但不限于以其它时间间隔递增子帧 编号。 图 2中有 4个无线帧， 第 1个无线帧为子帧 #0到 #9， 第 2个无线帧中的子帧 #0到 #9 可以称为子帧 #10到 #19， 第 3个无线帧中的子帧 #0到 #9可以称为子帧 #20到 #29， 第 4个无 线帧中的子帧 #0到 #9可以称为子帧 #30到 #39， 本实施例也以 40ms为周期， 即子帧 #39的下 一子帧为子帧 #0。
本发明实施例以 MBSFN子帧的配置周期为 8ms为例进行说明， 但适用于任何 MBSFN 的子帧配置情况。如果将子帧 #1配置为 MBSFN子帧，以 8ms为周期，子帧 #1的下一个 MBSFN 子帧应该是子帧 #9， 但由于在 FDD系统中， 规定每个无线帧中的子帧 # 0， 子帧 #4， 子帧 #5 和子帧 #9不能配置为 MBSFN子帧， 因此在子帧 #9后再间隔一个 8ms周期， 则子帧 #1的下 一个 MBSFN子帧为子帧 #17 (第 2个无线帧中的子帧 # 7)， 在子帧 #17后再间隔一个 8ms周 期时， 子帧 #17的下一个 MBSFN子帧应该是子帧 #25 (第 3个无线帧中的子帧 #5 )， 由于规定 子帧 #5不能配置为 MBSFN子帧， 所以在子帧 #25后还得再间隔一个 8ms周期， 即子帧 #17 的下一个 MBSFN子帧为子帧 #33 (第 4个无线帧中的子帧 # 3 )， 所以在本实施例中， 配置的 MBSFN子帧为子帧 #1、 #17和 #33。 依上所述，在本实施例中， 子帧 #1、 #17和 #33被配置为 MBSFN子帧， 则基站在子帧 #1、 #17和 #33上与中继通信， 中继接收基站发送的下行数据， 但是如果中继同时以相同的频率接 收基站发送给中继的数据和向 UE发送数据， 则中继向 UE发送的数据会对中继从基站接收 的数据造成干扰， 所以在子帧 #1, #17和 #33上， 中继停 lh向 UE发送下行数据， 只发送控制 信令， 并且考虑到 UE的后向兼容性， 中继在子帧 #5、 #21和 #37向基站反馈 ACK/NACK, 在子帧 #5、 #21 和 #37上， UE虽然可以向中继发送上行数据， 但是由于子帧 #5、 #21 和 #37 用于中继与基站之间通信，中继不接收 UE的上行数据。当 UE在子帧 #13上传给中继的数据， 在子帧 # 17接收到中继的 NACK反馈， 此时， 需要将该数据在子帧 #21上进行重传， 由于子 帧 #5、 #21和 #37已配置为中继向基站反馈 ACK/NACK的上行子帧， 即子帧 #21为中继与基 站通信的子帧， 中继在该子帧 #21上不接收 UE重传的上行数据， 则中继在该子帧 #21后的预 设个数的子帧上向 UE自动反馈 NACK,本发明实施例中预设个数为 4，但不限于 4，子帧 #21 后的第 4个子帧为子帧 #25，则在子帧 #25上向 UE自动反馈 NACK,该 UE在收到 NACK后， 就可以在子帧 #25后的预设个数的子帧上向中继重传上行数据， 仍以预设个数 4为例， 子帧 #25后的第 4个子帧为子帧 #29，则在子帧 #29上向中继重传上行数据，若 UE在子帧 #29上传 的数据需要在子帧 #37上进行重传， 但由于子帧 #37已设置为用于中继向基站反馈 ACK/NAK 的上行子帧， 即子帧 #37为中继与基站通信的子帧， 中继在该子帧 #37上不接收 UE重传的上 行数据， 则中继在该子帧 #37后的第 4个子帧即子帧 #1上向 UE自动反馈 NACK, UE收到该 NACK后， 应该在子帧 #1后的第 4个子帧即子帧 #5上重传上行数据， 但由于子帧 #5已设置 为用于中继向基站反馈 ACK/NAK的上行子帧， 中继在该子帧 #5上不接收 UE重传的上行数 据， 则中继在该子帧 #5后的第 4个子帧， 即在子帧 #9上向 UE自动反馈 NACK, UE收到该 NACK后， 就可在子帧 #9后的第 4个子帧即子帧 #13上向中继重传上行数据， 以此类推， 直 到 UE向中继成功重传了上行数据。
参见表 1， 第一行表示以 40ms为周期的第一个无线帧中的配置为 MBSFN的子帧； 第二 行表示在 40ms内 MBSFN配置的子帧编号； 第三行表示在 40ms内中继在这些子帧上向基站 反馈 ACK/NACK; 第四行 m n表示若 UE在子帧 m上传给中继的数据需要重传， 则中继在 子帧 n上向 UE自动反馈 NACK;
例如， 表 1 中第三列为当第一个无线帧里的 MBSFN子帧设置为 2 时的情况， 配置的 MBSFN子帧为子帧 #2、 #18和 #26， 中继向基站反馈的子帧为子帧 #6、 #22和 #30， 若 UE在 子帧 #14上传给中继的数据需要在子帧 #22重传， 但是由于子帧 #22已被配置为中继向基站反 馈的子帧， 因此 UE在子帧 #26上接收中继反馈的 NACK, 然后 UE在子帧 #30上向中继重传 该数据， 但是由于子帧 #30也被配置为中继向基站反馈的子帧， 因此 UE在子帧 #34上接收中 继反馈的 NACK, 然后 UE需要在子帧 #38向中继重传数据； 如果 UE在子帧 #38上传给中继 的数据需要在子帧 #6上重传， 但是由于子帧 #6已被配置为中继向基站反馈的子帧， 则中继需 要在子帧 #10上向 UE自动反馈 NACK;第一个无线帧里的 MBSFN子帧设置为其它值的情况 类似， 表 1中， m表示 UE在子帧 m上传给中继的数据需要重传， n表示在子帧 n上接收中 继向 UE自动反馈的 NACK。
Figure imgf000007_0001
表 1 : MBSFN子帧配置不同时的各种情况
本发明实施例的有益效果是： UE在中继与基站通信的子帧上重传数据时，接收中继在该 子帧后预设个数的子帧上向 UE反馈否定应答 NACK, 然后 UE在中继与基站通信的子帧上 不重传数据， 而在该预设个数的子帧上向中继重传数据， 因此解决了由于 MBSFN的配置对 UE上行 HARQ的影响， 保证了 UE上行同步 HARQ的时序关系。 实施例 2
本发明实施例提供了一种确定重传数据的方法， 该方法包括：
UE在中继与基站通信的子帧上重传数据时， 中继在该子帧后预设个数的子帧上向 UE反 馈否定应答 NACK, 以使得 UE在该预设个数的子帧上向中继重传数据。
本发明实施例的有益效果是： UE需要在中继与基站通信的子帧上重传数据时， 中继在该 子帧后预设个数的子帧上向 UE 自动反馈 NACK, 使 UE在中继与基站通信的子帧上不重传 数据， 而在该预设个数的子帧上向中继重传数据， 因此解决了由于 MBSFN的配置对 UE上 行 HARQ的影响， 保证了 UE上行同步 HARQ的时序关系。 实施例 3
本发明实施例提供了一种确定重传数据的方法， 该方法包括：
UE在中继与基站通信的子帧上重传数据时，在该子帧上打孔待发送的消息， 并在该子帧 后预设个数的子帧上向中继重传数据。
其中，打孔代表不传送。待发送的消息包括但不限于：重传的数据、上报的 CQI (Channel
Quality Indicator, 信道质量指示） 信息， 发送的 SRS ( Sounding Reference Signal, 探测参考 信号） 和 RACH (Random Access Channel, 随机接入信道） 信息。
参见图 3， 本实施例中的子帧编号以 lms间隔递增， 但不限于以其它时间间隔递增子帧 编号。 图 3中有 4个无线帧， 第 1个无线帧为子帧 #0到 #9， 第 2个无线帧中的子帧 #0到 #9 可以称为子帧 #10到 #19， 第 3个无线帧中的子帧 #0到 #9可以称为子帧 #20到 #29， 第 4个无 线帧中的子帧 #0到 #9可以称为子帧 #30到 #39， 本实施例也以 40ms为周期， 即子帧 #39的下 一子帧为子帧 #0。
本发明实施例以 MBSFN子帧的配置周期为 8ms为例进行说明， 但适用于任何 MBSFN 的子帧配置情况。如果将子帧 #2配置为 MBSFN子帧，以 8ms为周期，子帧 #2的下一个 MBSFN 子帧应该是子帧 #10 (第 2个无线帧中的子帧 # 0)，子帧 #10也就是第 2个无线帧中的子帧 #0， 但由于在 FDD系统中， 规定每个无线帧中的子帧 # 0， 子帧 #4， 子帧 #5和子帧 #9不能配置为 MBSFN子帧， 因此在子帧 #10后再间隔一个 8ms周期， 则子帧 #10的下一个 MBSFN子帧为 子帧 #18 (第 2个无线帧中的子帧 # 8)， 子帧 #18后再间隔一个 8ms周期， 则子帧 #18的下一 个 MBSFN子帧是子帧 #26 (第 3个无线帧中的子帧 # 6)， 在子帧 #26后再间隔一个 8ms周期 时， 子帧 #26的下一个 MBSFN子帧为子帧 #34 (第 4个无线帧中的子帧 # 4)， 子帧 #34也就 是第 4个无线帧中的子帧 #4， 由于规定子帧 #4不能配置为 MBSFN子帧，所以在本实施例中， 配置的 MBSFN子帧为子帧 #2、 #18和 #26。
依上所述，在本实施例中， 子帧 #2、 #18和 #26被配置为 MBSFN子帧， 则基站在子帧 #2、 #18和 #26上与中继通信， 中继接收基站发送的下行数据， 但是如果中继同时以相同的频率接 收基站的数据和向 UE发送数据， 则中继向 UE发送的数据会对中继从基站接收的数据造成 干扰， 因此在子帧 #2, #18和 #26上， 中继停止向 UE发送下行数据， 而只发送控制信令， 并 且考虑到 UE的后向兼容性， 中继在子帧 #6、 #22和 #30向基站反馈 ACK/NAK, 在子帧 #6、 #22和 #30上， UE虽然可以向中继发送上行数据， 但是由于子帧 #6、 #22和 #30用于中继与基 站之间通信， 中继不接收 UE的上行数据。
当 UE在子帧 #14上传给中继的数据， 在子帧 # 18接收到中继的 NACK反馈， 此时， 需 要在子帧 #22上进行重传， 由于子帧 #6、 #22和 #30已配置为中继向基站反馈的子帧， 中继在 该子帧 #22上向基站反馈 ACK/NACK, 不接收重传的上行数据， 则 UE在该子帧 #22上打孔 待发送的消息，然后 UE在子帧 #22后的预设个数的子帧上向中继重传上行数据。本实施例中 以预设子帧个数为 8进行说明， 但不限于 8， 子帧 #22后的第 8个子帧为 #30， 则在子帧 #30 上向中继重传数据， 但由于子帧 #30也用于中继向基站反馈 ACK/NACK, 即子帧 #30为中继 与基站通信的子帧， 中继在该子帧 #30上也不接收 UE重传的上行数据， 则 UE在该子帧 #30 上打孔上待发送的消息，然后 UE在子帧 #30后的预设个数的子帧上向中继重传上行数据， 即 UE在子帧 #30后第 8个子帧即在子帧 #38上向中继重传上行数据； 以此类推， 直到 UE向中 继成功重传了上行数据。
参见表 2， 第一行表示以 40ms为周期的第一个无线帧中的配置为 MBSFN的子帧； 第二 行表示在 40ms内 MBSFN配置的子帧编号； 第三行表示在 40ms内中继向基站反馈的子帧编 号； 第四行 m n表示若 UE在子帧 m上传给中继的数据需要重传， 则该 UE在子帧 n上打 孔待发送的消息。
例如， 表 2 中第二列为当第一个无线帧里的 MBSFN子帧设置为 1 时的情况， 配置的 MBSFN子帧为子帧 #1、 #17和 #33， 中继向基站反馈的子帧为子帧 #5、 #21和 #37， UE在子 帧 #13上传给中继的数据需要重传， 则 UE在该子帧 #13上打孔待发送的消息， 然后 UE需要 在子帧 #21上向中继重传上行数据； 若 UE在子帧 #29上传给中继的数据需要重传， 则 UE在 该子帧 #29上打孔待发送的消息，然后 UE需要在子帧 #37上向中继重传数据，但由于子帧 #37 为基站与中继通信的子帧， 因此 UE 需要在子帧 #5 上向中继重传数据； 第一个无线帧里的 MBSFN子帧设置为其它值的情况类似， 表 2中， m表示 UE在子帧 m上打孔待发送的消息， n表示 UE需要在子帧 n上重传数据。
Figure imgf000009_0001
表 2: MBSFN子帧配置不同时的各种情况 本发明实施例的有益效果是： 通过在基站和中继通信的子帧上打孔待发送的消息， 使该 待发送的消息在基站和中继通信的子帧上不进行上传， 而在该子帧后预设个数的子帧上向中 继重传， 解决了由于 MBSFN的配置对 UE上行 HARQ的影响， 保证了 UE上行同步 HARQ 的时序关系。 实施例 4
参见图 4， 本发明实施例提供了一种用户设备， 该用户设备包括： 接收模块 401和重传 模块 402;
接收模块 401，用于 UE在中继与基站通信的子帧上重传数据时，接收中继在该子帧后预 设个数的子帧上向 UE反馈的否定应答 NACK;
重传模块 402， 用于接收模块 401接收到 NACK后， 在上述预设个数的子帧上向中继重 传数据。
本发明实施例的有益效果是： UE在中继与基站通信的子帧上重传数据时，接收中继在该 子帧后预设个数的子帧上向 UE反馈否定应答 NACK, 然后 UE在中继与基站通信的子帧上 不重传数据， 而在该预设个数的子帧上向中继重传数据， 因此解决了由于 MBSFN的配置对 UE上行 HARQ的影响， 保证了 UE上行同步 HARQ的时序关系。 实施例 5
参见图 5， 本发明实施例提供了一种中继， 该中继包括： 反馈模块 501 ;
反馈模块 501，用于 UE在中继与基站通信的子帧上重传数据时， 中继在该子帧后预设个 数的子帧上向 UE反馈否定应答 NACK, 以使得 UE在该预设个数的子帧上向中继重传数据。
本发明实施例的有益效果是： UE需要在中继与基站通信的子帧上重传数据时， 中继在 该子帧后预设个数的子帧上向 UE 自动反馈 NACK, 使 UE在中继与基站通信的子帧上不重 传数据， 而在该预设个数的子帧上向中继重传数据， 因此解决了由于 MBSFN 的配置对 UE 上行 HARQ的影响， 保证了 UE上行同步 HARQ的时序关系。 实施例 6
参见图 6， 本发明实施例提供了一种用户设备， 该用户设备包括： 打孔模块 601和重传 模块 602;
打孔模块 601，用于 UE在中继与基站通信的子帧上重传数据时，在该子帧上打孔待发送 的消息；
其中， 打孔代表不传送。 待发送的消息包括但不限于： 重传的数据信息、 上报的 CQI信 息， 发送的 SRS和 RACH信息。
重传模块 602， 用于打孔模块 601打孔完待发送的消息后， 在上述子帧后预设个数的子 帧上向中继重传数据。
本发明实施例的有益效果是： 通过在基站和中继通信的子帧上打孔待发送的消息， 使该 待发送的消息在基站和中继通信的子帧上不进行上传， 而在该子帧后预设个数的子帧上向中 继重传， 解决了由于 MBSFN的配置对 UE上行 HARQ的影响， 保证了 UE上行同步 HARQ 的时序关系。
本发明实施例可以利用软件实现， 相应的软件程序可以存储在可读取的存储介质中， 例 如， 计算机的硬盘、 缓存或光盘中。
以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明的精神和原则之 内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种确定重传数据的方法， 其特征在于， 所述方法包括：
UE在中继与基站通信的子帧上重传数据时，所述 UE接收所述中继在所述子帧后预设个 数的子帧上向所述 UE反馈否定应答 NACK后， 在所述预设个数的子帧上向所述中继重传数 据。
2、 一种确定重传数据的方法， 其特征在于， 所述方法包括：
UE在中继与基站通信的子帧上重传数据时，所述中继在所述子帧后预设个数的子帧上向 所述 UE反馈否定应答 NACK, 以使得所述 UE在所述预设个数的子帧上向所述中继重传数 据。
3、 一种确定重传数据的方法， 其特征在于， 所述方法包括：
UE在中继与基站通信的子帧上重传数据时，在所述子帧上打孔待发送的消息， 并在所述 子帧后预设个数的子帧上向所述中继重传数据。
4. 根据权利要求 3所述的方法， 其特征在于， 所述待发送的消息包括但不限于： 重传的 数据、 上报的信道质量指示 CQI信息， 发送的探测参考信号 SRS和随机接入信道 RACH信 息。
5. 一种用户设备， 其特征在于， 所述用户设备包括： 接收模块 401和重传模块 402; 所述接收模块 401，用于 UE在中继与基站通信的子帧上重传数据时，接收所述中继在所 述子帧后预设个数的子帧上向所述 UE反馈的否定应答 NACK;
所述重传模块 402， 用于所述接收模块 401接收到所述 NACK后， 在所述预设个数的子 帧上向所述中继重传数据。
6. 一种中继， 其特征在于， 所述中继包括： 反馈模块 501 ;
所述反馈模块 501，用于 UE在中继与基站通信的子帧上重传数据时，所述中继在所述子 帧 ]5预设个数的子帧上向所述 UE反馈否定应答 NACK, 以使得所述 UE在所述预设个数的 子帧上向所述中继重传数据。
7. 一种用户设备， 其特征在于， 所述用户设备包括： 打孔模块 601和重传模块 602; 所述打孔模块 601，用于 UE在中继与基站通信的子帧上重传数据时，在所述子帧上打孔 待发送的消息；
所述重传模块 602， 用于所述打孔模块 601打孔完待发送的消息后， 在所述子帧后预设 个数的子帧上向所述中继重传数据。
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