WO2013113272A1 - Procédé, système et dispositif d'envoi et de réception d'informations de rétroaction - Google Patents

Procédé, système et dispositif d'envoi et de réception d'informations de rétroaction Download PDF

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Publication number
WO2013113272A1
WO2013113272A1 PCT/CN2013/071094 CN2013071094W WO2013113272A1 WO 2013113272 A1 WO2013113272 A1 WO 2013113272A1 CN 2013071094 W CN2013071094 W CN 2013071094W WO 2013113272 A1 WO2013113272 A1 WO 2013113272A1
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WIPO (PCT)
Prior art keywords
subframe
radio frame
downlink
harq timing
reconfiguration
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PCT/CN2013/071094
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English (en)
Chinese (zh)
Inventor
林亚男
沈祖康
司倩倩
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电信科学技术研究院
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Publication of WO2013113272A1 publication Critical patent/WO2013113272A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0087—Timing of allocation when data requirements change

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, system, and apparatus for transmitting and receiving feedback information. Background technique
  • LTE Long Term Evolution
  • the peak rate of the LTE-A system is greatly improved compared with the LTE system.
  • the LTE-A system requires downlink lGbps and uplink 500 Mbps. Obviously, the bandwidth of 20Mhz is no longer sufficient for this demand.
  • a Carrier Aggregation (CA) technology is introduced, that is, a plurality of carriers that are consecutive or discontinuous are grouped together in the same cell, and simultaneously serve the user equipment when needed, to provide The required rate, therefore, the LTE-A system is a multi-carrier system.
  • CA technology of LTE-A is shown in Figure IB.
  • the base station can perform data transmission with the user equipment on four carriers at the same time to improve system throughput.
  • the UE User Equipment
  • ACK/NACK Acknowledge/ Negative Acknowledge
  • the base station/7 After demodulating and decoding the data on the downlink subframe n_k, the base station/7 is fed back to the base station whether the data on the downlink subframe needs to be retransmitted signaling (ie, ACK/NACK).
  • K the value of the set K is related to the uplink and downlink configuration of the system and the specific subframe number. For details, see Table 1. Uplink and downlink subframe number
  • radio frames are sequentially arranged, that is, if the last subframe in the radio frame is A, the first subframe in the radio frame + 1 is A + Table 1 Only one radio frame is given as an example. The case corresponding to the frame, where n - k ⁇ 0 represents the downlink subframe in the previous radio frame.
  • LTE cells located in different Bands may use different TDDs.
  • the downlink subframe configuration is as shown in Figure 1C.
  • Carrier 1 and carrier 2 are located in Band A
  • carrier 3 is located in Band B
  • cell 1 cell 2, and cell 3 are cells on carrier 1, carrier 2, and carrier 3, respectively.
  • the TDD uplink and downlink configurations of the cell 1 and the cell 2 are the same, both of which are configured 1.
  • the TDD uplink and downlink subframe configuration of the cell 3 is different from that of the cell 1 and the cell 2, and is configured as 2. If the UE wants to use the three cells for carrier aggregation, a plurality of TDD uplink and downlink configurations may occur in all the aggregated cells of the UE.
  • the Physical Uplink Control Channel (PUCCH) is transmitted only in the uplink primary carrier, that is, it needs to support the use of the uplink primary carrier feedback on all frequency bands.
  • ACK/NACK corresponding to the Physical Downlink Shared Channel (PDSCH).
  • the UE transmits ACK/NACK according to Hybrid Automatic Repeat reQuest timing (HARQ timing) corresponding to a reference configuration, and the reference configuration is in the seven configurations of Table 1.
  • HARQ timing Hybrid Automatic Repeat reQuest timing
  • One type may be the same as the uplink and downlink configuration on a certain band aggregated by the UE, or may be different from the uplink and downlink configuration on each band aggregated by the UE.
  • the selection of the reference configuration may be related to an uplink and downlink configuration on multiple bands aggregated by the UE, or an uplink and downlink configuration on multiple activated bands. Therefore, when the base station reconfigures the band aggregated by the UE or activates/deactivates the reconfiguration, the reference configuration may change.
  • a dynamic uplink-downlink subframe configuration scheme is proposed, that is, the uplink-downlink subframe ratio is adjusted according to real-time service requirements and channel conditions (that is, the TDD uplink and downlink configuration is changed).
  • the upstream and downstream configurations are usually adjusted in a certain period.
  • the TDD uplink and downlink configurations are reconfigured according to service requirements in a period of 640 ms.
  • PDSCH HARQ timing is bound to the uplink and downlink configuration. When the uplink and downlink configurations in the system are reconfigured, the PDSCH HARQ timing will change accordingly.
  • the reconfiguration is notified by higher layer signaling, such as Radio Resource Control (RRC) signaling or Media Access Control (MAC; Control Element, CE) signaling.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the maximum delay requirement for RRC reconfiguration in the LTE system is 15 ms
  • the maximum delay requirement for MAC CE reconfiguration is 8 ms. but Different UEs have different processing capabilities, and the actual processing delays required are different.
  • reconfiguration can be completed before n+k (k ⁇ 8 or k ⁇ 15), and the base station cannot know the difference.
  • the UE starts to work according to the new configuration it also causes the base station and the UE to directly understand the configuration inconsistency.
  • a method, a system, and a device for transmitting and receiving feedback information provided by the embodiments of the present invention are used to solve the inconsistency between the base station and the UE in the fuzzy time period of the reconfiguration in the prior art.
  • the user equipment determines that the reconfiguration command from the network side is correctly received on the downlink subframe k, and the reconfiguration will change the physical downlink shared channel PDSCH hybrid automatic repeat request feedback timing relationship HARQ timing;
  • the user equipment feeds back the downlink subframe in the subframe m and the subsequent subframe according to the reconfigured PDSCH HARQ timing, and the downlink subframe in the subframe before the subframe h, according to the pre-reconfiguration PDSCH HARQ timing for feedback;
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • the network side device determines that the user equipment correctly receives the reconfiguration command from the network side on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH;
  • the network side device receives the feedback information according to the reconfigured PDSCH HARQ timing and the downlink subframe in the subframe before the subframe h according to the reconfiguration of the downlink subframe in the subframe m and the subsequent subframe.
  • the previous PDSCH HARQ timing receives feedback information;
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • a first determining module configured to determine that the reconfiguration command from the network side is correctly received on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH;
  • a feedback module configured to perform feedback on the reconfigured PDSCH HARQ timing for the downlink subframe in the subframe m and the subsequent subframe, and the downlink subframe in the subframe before the subframe h, according to the reconfiguration PDSCH HARQ Timing for feedback;
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • the network side device that receives the feedback information provided by the embodiment of the present invention is characterized in that: the network side device includes:
  • a second determining module configured to determine that the user equipment correctly receives the reconfiguration command from the network side on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH;
  • a receiving module configured to receive, according to the reconfigured PDSCH HARQ timing, the downlink subframe in the subframe m and the subsequent subframe, and the downlink subframe in the subframe before the subframe h, according to the reconfiguration
  • the previous PDSCH HARQ timing receives feedback information
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • the user equipment is configured to determine that the reconfiguration command from the network side is correctly received on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH, and the downlink subframe in the subframe m and subsequent subframes
  • the configured PDSCH HARQ timing is fed back, and the downlink subframe in the subframe before the subframe h is fed back according to the PDSCH HARQ timing before reconfiguration;
  • the network side device is configured to determine that the user equipment correctly receives the reconfiguration command from the network side on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH, and the downlink subframe in the subframe m and subsequent subframes Receiving feedback information according to the reconfigured PDSCH HARQ timing, and receiving the feedback information according to the PDSCH HARQ timing before the reconfiguration, for the downlink subframe in the subframe before the subframe h;
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • the base station and the UE work at the same time, so that the understanding of the configuration between the base station and the UE in the fuzzy time period of the reconfiguration can be ensured. Consistently, the base station can correctly receive feedback information of the UE; further improving system performance and transmission efficiency.
  • 1A is a schematic diagram of a single spectrum system in the background art
  • 1B is a schematic diagram of a spectrum aggregation system in the background art
  • 1C is a schematic diagram of different TDD uplink/downlink subframe configurations in different bands in the background art
  • FIG. 2 is a schematic structural diagram of a system for receiving feedback information according to an embodiment of the present invention
  • 3 is a schematic diagram of a frame h and a subframe m do not overlap according to an embodiment of the present invention
  • 4 is a schematic diagram of a frame h and a subframe m coincident according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of user equipment in a system for receiving feedback information according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a network side device in a system for receiving feedback information according to an embodiment of the present invention
  • FIG. 7 is a schematic flowchart of a method for sending feedback information according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a method for receiving feedback information according to an embodiment of the present invention. detailed description
  • the user equipment and the network side device feed back the downlink subframe in the subframe m and the subsequent subframe according to the reconfigured PDSCH HARQ timing, and the downlink subframe in the subframe before the subframe h And performing feedback according to the PDSCH HARQ timing before reconfiguration; wherein the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is sent The uplink subframe of the feedback information corresponding to the reconfiguration command.
  • the base station and the UE work at the same time, so that the understanding of the configuration between the base station and the UE in the fuzzy time period of the reconfiguration can be ensured. Consistently, the base station can correctly receive feedback information of the UE.
  • the system for receiving feedback information in the embodiment of the present invention includes: a user equipment 10 and a network side device 20.
  • the user equipment 10 is configured to determine that the reconfiguration command from the network side is correctly received on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH, and the downlink subframe in the subframe m and subsequent subframes, according to The PDSCH HARQ timing after the reconfiguration is fed back, and the downlink subframe in the subframe before the subframe h is fed back according to the PDSCH HARQ timing before the reconfiguration;
  • the network side device 20 is configured to determine that the user equipment correctly receives the reconfiguration command from the network side on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH, and the downlink subframe in the subframe m and subsequent subframes.
  • the frame receives the feedback information according to the reconfigured PDSCH HARQ timing, and receives the feedback information according to the PDSCH HARQ timing before the reconfiguration of the downlink subframe in the subframe before the subframe h;
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • the user equipment 10 and the network side device 20 may determine whether the reconfiguration is changed by the following process.
  • the HARQ The timing has changed.
  • TDD uplink and downlink configuration of the carrier itself For example, changing the TDD uplink and downlink configuration of the carrier itself, or changing the PDSCH HARQ timing reference TDD uplink and downlink configuration in the inter-band CA system.
  • subframe h is before subframe m, see Figure 3; if subframe h is subframe m, see Figure 4.
  • the user equipment 20 does not feed back the subframe h, and the downlink subframe between the subframe h and the subframe m; or the user equipment 20 does not detect the subframe h, and the child A downlink subframe between the frame h and the subframe m.
  • the user equipment 10 and the network side device 20 can determine the subframe m in one of the following manners: Mode 1, m 2 k + T , where T is not less than the maximum reconfiguration delay specified by the system.
  • the ⁇ in the above manner may be specified in the protocol; the user equipment may be notified after being determined by the network side; or may be determined by the network side and the user equipment after negotiation. If the reconfiguration is RRC reconfiguration, the maximum reconfiguration delay specified by the system is 15ms; if the reconfiguration is MAC reconfiguration, the maximum reconfiguration delay specified by the system is 8ms.
  • the user equipment 10 and the network side device 20 may also perform reconfiguration based on the pre-PDSCH.
  • the TDD uplink and downlink configuration corresponding to the HARQ timing determines the subframe m.
  • Case 1 The TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 0. If the subframe k is the subframe 0 or the subframe 1 in the radio frame a, the subframe m is a sub-frame in the radio frame a+1. Frame 5, if the subframe k is the subframe 5 or the subframe 6 in the radio frame a, the subframe m is the subframe 0 in the radio frame a+2;
  • Case 2 The TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 1. If the subframe k is the subframe 0 or the subframe 1 in the radio frame a, the subframe m is a sub-frame in the radio frame a+1.
  • the subframe m is the subframe 9 in the radio frame a+1, and if the subframe k is the subframe 5 or the subframe 6 in the radio frame a, The subframe m is the subframe 0 in the radio frame a+2, and if the subframe k is the subframe 9 in the radio frame a, the subframe m is the subframe 4 in the radio frame a+2;
  • Case 3 The TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 2. If the subframe k is the subframe 0 or 1 or 3 or 4 in the radio frame a, the subframe m is the radio frame a+1. Subframe 9; if subframe k is Subframe 5 or subframe 6 or subframe 8 or subframe 9 in radio frame a, then subframe m is subframe 4 in radio frame a+2; Case 4, TDD corresponding to PDSCH HARQ timing before reconfiguration The uplink and downlink are configured as configuration 3.
  • the subframe m is the subframe 1 in the radio frame a+1, and if the subframe k is the subframe 1 in the radio frame a, The subframe m is the subframe 5 in the radio frame a+1. If the subframe k is the subframe 5 or the subframe 6 or the subframe 7 or the subframe 8 or the subframe 9 in the radio frame a, the subframe m is wireless. Subframe 1 in frame a+2;
  • Case 5 The configuration of the TDD uplink and downlink corresponding to the PDSCH HARQ timing before reconfiguration is configuration 3. If the subframe k is the subframe 0 or the subframe 1 in the radio frame a, the subframe m is a sub-frame in the radio frame a+1.
  • subframe m is subframe 1 in radio frame a+2;
  • the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing of the reconfiguration is configured as 4, if the subframe k is the subframe 0 or the subframe 1 or the subframe 4 or the subframe 5 or the subframe 6 or the subframe 7 in the radio frame a Or subframe 8 or subframe 9, then subframe m is subframe 0 in radio frame a+2;
  • Case 7 The TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configuration 5, if the subframe k is the subframe 0 or the subframe 1 or the subframe 3 or the subframe 4 or the subframe 5 or the subframe in the radio frame a Frame 6 or subframe 7 or subframe 8 or subframe 9, then subframe m is subframe 9 in radio frame a+1;
  • Case 8 The configuration of the TDD uplink and downlink corresponding to the PDSCH HARQ timing before reconfiguration is configuration 6. If the subframe k is the subframe 0 or the subframe 1 in the radio frame a, the subframe m is a sub-frame in the radio frame a+1. Frame 5, if the subframe k is the subframe 5 or the subframe 6 or the subframe 9 in the radio frame a, the subframe m is the subframe 5 in the radio frame a+2.
  • the determining of the subframe m is specifically determined by using the above method in the protocol; the user equipment may be determined after the network side determines; or may be determined by the network side and the user equipment after negotiation.
  • the user equipment 10 and the network side device 20 can determine the frame h in the following manner.
  • the corresponding feedback subframe is after the subframe m.
  • the corresponding feedback subframe is after the subframe m, and the feedback subframe is configured as a downlink subframe or a subframe m according to the TDD uplink and downlink corresponding to the PDSCH HARQ timing after the reconfiguration.
  • the feedback information corresponding to the other downlink subframes is transmitted in the feedback subframe.
  • the user equipment 10 and the network side device 20 may further determine the subframe h according to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing.
  • Case 1 The TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 0. If the subframe k is the subframe 0 or the subframe 1 in the radio frame a, the subframe h is a sub-frame in the radio frame a+1. Frame 1, if the subframe k is the subframe 5 or the subframe 6 in the radio frame a, the subframe h is equal to the subframe m; Case 2: The TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 1. If the subframe k is the subframe 0 or the subframe 1 in the radio frame a, the subframe h is a sub-frame in the radio frame a+1.
  • the subframe h is equal to the subframe m, and if the subframe k is the subframe 5 or the subframe 6 in the radio frame a, the subframe h is the radio frame a Sub-frame 9 in +1, if sub-frame k is sub-frame 9 in radio frame a, sub-frame h is sub-zero in radio frame a+2;
  • Case 3 The configuration of the TDD uplink and downlink corresponding to the PDSCH HARQ timing before reconfiguration is configuration 2. If the subframe k is the subframe 0 or the subframe 1 or the subframe 3 or the subframe 4 in the radio frame a, the subframe h is equal to Subframe m, if the subframe k is the subframe 5 or the subframe 6 or the subframe 8 or the subframe 9 in the radio frame a, the subframe h is the subframe 9 in the radio frame a+1;
  • Case 4 The TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 3. If the subframe k is the subframe 0 in the radio frame a, the subframe h is equal to the subframe m, and if the subframe k is in the radio frame a Subframe 1, then subframe h is subframe 1 in radio frame a+1, if subframe k is subframe 5 or subframe 6 or subframe 7 or subframe 8 or subframe 9 in radio frame a, Then the subframe h is the subframe 7 in the radio frame a+1;
  • Case 5 The configuration of the TDD uplink and downlink corresponding to the PDSCH HARQ timing before reconfiguration is configuration 3. If the subframe k is the subframe 0 or the subframe 1 in the radio frame a, the subframe h is a sub-frame in the radio frame a+1.
  • the subframe h is the subframe 7 in the radio frame a+1;
  • the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing of the reconfiguration is configured as 4, if the subframe k is the subframe 0 or the subframe 1 or the subframe 4 or the subframe 5 or the subframe 6 or the subframe 7 in the radio frame a Or subframe 8 or subframe 9, then subframe m is subframe 6 in radio frame a+1;
  • Case 7 The TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configuration 5, if the subframe k is the subframe 0 or the subframe 1 or the subframe 3 or the subframe 4 or the subframe 5 or the subframe in the radio frame a Frame 6 or subframe 7 or subframe 8 or subframe 9, then subframe h is equal to subframe m;
  • Case 8 The configuration of the TDD uplink and downlink corresponding to the PDSCH HARQ timing before reconfiguration is configuration 6. If the subframe k is the subframe 0 or the subframe 1 in the radio frame a, the subframe m is a sub-frame in the radio frame a+1. Frame 0; If the subframe k is the subframe 5 or the subframe 6 or the subframe 9 in the radio frame a, the subframe m is the subframe 0 in the radio frame a+2.
  • the user equipment 10 and the network side device 20 may also perform reconfiguration based on the pre-PDSCH.
  • the uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the TDD uplink and downlink configuration and the reconfiguration of the PDQ HARQ timing corresponding to the HARQ timing determines the subframe h.
  • determining the subframe h manner may use the following Some or all of the circumstances:
  • Case 1 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after the reconfiguration is 10 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 0, if the subframe k is in the radio frame a Subframe 0 or subframe 1, then subframe h is subframe 1 in radio frame a+1, if subframe k is radio frame a In subframe 5 or subframe 6, then subframe h is equal to subframe m;
  • Case 2 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after the reconfiguration is 10 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 1, if the subframe k is in the radio frame a Subframe 0 or subframe 1, then subframe h is subframe 0 in radio frame a+1, if subframe k is subframe 4 in radio frame a, subframe h is equal to subframe m, if subframe k For the subframe 5 or the subframe 6 in the radio frame a, the subframe h is the subframe 9 in the radio frame a+1, and if the subframe k is the subframe 9 in the radio frame a, the subframe h is the radio frame. Subframe 0 in a+2;
  • the uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing is 10 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing is configured as configuration 2, if the subframe k is in the radio frame a. Subframe 0 or subframe 1 or subframe 3 or subframe 4, then subframe h is equal to subframe m, if subframe k is subframe 5 or subframe 6 or subframe 8 or subframe 9 in radio frame a , the subframe h is the subframe 9 in the radio frame a+1;
  • Case 4 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing is 10 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 3, if the subframe k is in the radio frame a Subframe 0, then subframe h is equal to subframe m. If subframe k is subframe 1 in radio frame a, subframe h is subframe 1 in radio frame a+1, if subframe k is radio frame a Subframe 5 or subframe 6 or subframe 7 or subframe 8 or subframe 9, then subframe h is subframe 7 in radio frame a+1;
  • Case 5 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after the reconfiguration is 10 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 3, if the subframe k is in the radio frame a Subframe 0 or subframe 1, then subframe h is subframe 1 in radio frame a+1, if subframe k is subframe 5 or subframe 6 or subframe 7 or subframe 8 in radio frame a or Subframe 9, then the subframe h is the subframe 7 in the radio frame a+1;
  • Case 6 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after reconfiguration is 10 ms, and the PDSCH HARQ before reconfiguration The TDD uplink and downlink configuration corresponding to the timing is configured as 4, if the subframe k is the subframe 0 or the subframe 1 or the subframe 4 or the sub
  • Case 7 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after reconfiguration is 10 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 5, if the subframe k is in the radio frame a Subframe 0 or subframe 1 or subframe 3 or subframe 4 or subframe 5 or subframe 6 or subframe 7 or subframe 8 or subframe 9, then subframe h is equal to subframe m;
  • Case 8 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after the reconfiguration is 10 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 6, if the subframe k is in the radio frame a Subframe 0 or subframe 1, then subframe m is subframe 0 in radio frame a+1; if subframe k is subframe 5 or subframe 6 or subframe 9 in radio frame a, then subframe m Is the subframe 0 in the radio frame a+2;
  • the uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing is 5 ms
  • the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 1, if the subframe k is in the radio frame a.
  • Subframe 0 or subframe 1 or subframe 4 or subframe 9 then subframe h is equal to subframe m, and if subframe k is subframe 5 or subframe 6 in radio frame a, subframe h is a radio frame Subframe 9 in a+1;
  • the uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing is 5 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before reconfiguration is configured as 2, if the subframe k is the radio frame a Subframe 0 or subframe 1 or subframe 3 or subframe 4 or subframe 5 or subframe 6 or subframe 8 or subframe 9, then subframe h is equal to subframe m;
  • Case 12 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after the reconfiguration is 5 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 3, if the subframe k is the radio frame a In the subframe 0, the subframe h is equal to the subframe m; if the subframe k is the subframe 1 in the radio frame a, the subframe h is the subframe 1 in the radio frame a+1, and if the subframe k is the radio frame Subframe 5 or subframe 6 or subframe ⁇ or subframe 8 or subframe 9 in a, then subframe h is subframe 7 in radio frame a+1;
  • the uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing is 5 ms
  • the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 3, if the subframe k is the radio frame a In the subframe 0 or the subframe 1, the subframe h is the subframe 1 in the radio frame a+1, if the subframe k is the subframe 5 or the subframe 6 or the subframe 7 or the subframe 8 in the radio frame a Or subframe 9, the subframe h is the subframe 7 in the radio frame a+1;
  • Case 14 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after the reconfiguration is 5 ms, and before the reconfiguration
  • the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing is configured as 4, if the subframe k is the subframe 0 or the
  • Case 15 The uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after the reconfiguration is 5 ms, and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 5, if the subframe k is the radio frame a Subframe 0 or subframe 1 or subframe 3 or subframe 4 or subframe 5 or subframe 6 or subframe 7 or subframe 8 or subframe 9, then subframe h is equal to subframe m;
  • the uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing is 5 ms
  • the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing before the reconfiguration is configured as 6 if the subframe k is the radio frame a.
  • the subframe m is the subframe 1 in the radio frame a+1
  • the subframe k is the subframe 5 or the subframe 6 or the subframe 9 in the radio frame a
  • the subframe m is subframe 1 in radio frame a+2.
  • the subframe h is specifically used in the above-mentioned manner, and may be specified in the protocol; or may be notified by the network side to the user equipment; or may be determined by the network side and the user equipment after negotiation.
  • the network side device in the embodiment of the present invention may be a base station (such as a macro base station, a home base station, etc.), or an RN (relay) device, or other network side devices.
  • the user equipment in the system for receiving feedback information in the embodiment of the present invention includes: a first determining module 500 and a feedback module 510.
  • the first determining module 500 is configured to determine that the reconfiguration command from the network side is correctly received on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH, triggering the feedback module 510;
  • the feedback module 510 is configured to perform, according to the reconfigured PDSCH HARQ timing, the downlink subframe in the subframe m and the subsequent subframe, and the downlink subframe in the subframe before the subframe h, according to the reconfiguration Pre-PDSCH HARQ timing for feedback;
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • the feedback module 510 does not feed back the subframe h, and the downlink subframe between the subframe h and the subframe m; or does not detect the subframe h, and the subframe h and the child The downlink subframe between frames m.
  • the feedback module 510 determines the subframe m according to the following steps:
  • the feedback module 510 may further determine the subframe m according to the TDD uplink and downlink configuration corresponding to the pre-configuration PDSCH HARQ timing.
  • the specific process refer to the corresponding process of the system in Figure 2, which will not be repeated here.
  • the feedback module 510 determines, as the subframe h, the first downlink subframe in the subframe n and the subframe m that the corresponding feedback subframe satisfies the following conditions:
  • the corresponding feedback subframe is after the subframe m.
  • the feedback module 510 determines, as the subframe h, the first downlink subframe in the subframe n and the subframe m that the corresponding feedback subframe satisfies the following conditions:
  • the corresponding feedback subframe is after the subframe m, and the feedback subframe is configured according to the reconfigured PDSCH HARQ timing, and the TDD uplink and downlink is configured as a downlink subframe or a subframe m and thereafter.
  • the feedback information corresponding to the downlink subframe is transmitted in the feedback subframe.
  • the feedback module 510 can also perform pre-configuration based on PDSCH HARQ timing.
  • the corresponding TDD uplink and downlink configuration determines the subframe h.
  • the feedback module 510 may further determine the subframe according to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing and the uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing. h.
  • the specific process refer to the corresponding process of the system in Figure 2, and details are not described herein.
  • the network side device in the system for receiving feedback information in the embodiment of the present invention includes:
  • the second determining module 600 is configured to determine that the user equipment correctly receives the reconfiguration command from the network side on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH, and trigger the receiving module 610;
  • the receiving module 610 is configured to receive, according to the reconfigured PDSCH HARQ timing, the downlink subframe in the subframe m and the subsequent subframe, and the downlink subframe in the subframe before the subframe h, according to the weight Receiving feedback information of PDSCH HARQ timing before configuration;
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • the receiving module 610 determines the subframe m according to the following steps:
  • the receiving module 610 may further determine the subframe m according to the TDD uplink and downlink configuration corresponding to the pre-configuration PDSCH HARQ timing.
  • the specific process refer to the corresponding process of the system in Figure 2, which will not be repeated here.
  • the receiving module 610 determines, as the subframe h, the first downlink subframe in the subframe n and the subframe m that the corresponding feedback subframe satisfies the following conditions:
  • the corresponding feedback subframe is after the subframe m.
  • the receiving module 610 determines, as the subframe h, the first downlink subframe in the subframe n and the subframe m that the corresponding feedback subframe satisfies the following conditions:
  • the corresponding feedback subframe is after the subframe m, and the feedback subframe is configured according to the reconfigured PDSCH HARQ timing, and the TDD uplink and downlink is configured as a downlink subframe or a subframe m and thereafter.
  • the feedback information corresponding to the downlink subframe is transmitted in the feedback subframe.
  • the receiving module 610 may further perform pre-configuration based on PDSCH HARQ timing.
  • the corresponding TDD uplink and downlink configuration determines the subframe h.
  • the receiving module 610 may further determine the subframe according to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing and the uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing. h.
  • the specific process refer to the corresponding process of the system in Figure 2, and details are not described herein.
  • a method for transmitting feedback information is also provided in the embodiment of the present invention. Since the principle of the solution is similar to the user equipment in the system for receiving feedback information in the embodiment of the present invention, the implementation of the method may be referred to. The implementation of the system, the repetition will not be repeated.
  • the method for sending feedback information in the embodiment of the present invention includes the following steps:
  • Step 701 The user equipment determines that the reconfiguration command from the network side is correctly received on the downlink subframe k, and the reconfiguration will change the HARQ timing of the PDSCH.
  • Step 702 The user equipment feeds back the downlink subframe in the subframe m and the subsequent subframe according to the reconfigured PDSCH HARQ timing, and the downlink subframe in the subframe before the subframe h, according to the reconfiguration. Feedback of PDSCH HARQ timing;
  • the subframe h and the subframe m are after the uplink subframe n, and the subframe h is before the subframe m or the subframe h is the subframe m, and the uplink subframe n is the uplink subframe that sends the feedback information corresponding to the reconfiguration command. .
  • subframe h is before subframe m, see Figure 3; if subframe h is subframe m, see Figure 4.
  • the user equipment does not feed back the subframe h, and the downlink subframe between the subframe h and the subframe m; or the user equipment does not detect the subframe h, and the subframe h And a downlink subframe between the subframe m and the subframe m.
  • the user equipment may determine the subframe m by using one of the following methods:
  • Manner 3 According to the PDSCH HARQ timing before the reconfiguration, the last downlink subframe before the subframe A+ and the first q downlink subframes after the subframe ⁇ + and the subframe ⁇ + ⁇ are performed in the same uplink subframe. Feedback, the subframe ⁇ is the subframe ⁇ + ⁇ and the qth downlink subframe after the subframe ⁇ + ,, where q is not less than 1;
  • the T in the above manner may be specified in the protocol; the user equipment may be notified after being determined by the network side; or may be determined by the network side and the user equipment after negotiation. If the reconfiguration is RRC reconfiguration, the maximum reconfiguration delay specified by the system is 15ms; if the reconfiguration is MAC reconfiguration, the maximum reconfiguration delay specified by the system is 8ms.
  • the user equipment may further determine the subframe m according to the TDD uplink and downlink configuration corresponding to the pre-configuration PDSCH HARQ timing.
  • the specific process refer to the corresponding process of the system in Figure 2. Said.
  • the determining of the subframe m is specifically determined by using the above method in the protocol; the user equipment may be determined after the network side determines; or may be determined by the network side and the user equipment after negotiation.
  • the user equipment can determine the frame h in the following manner.
  • the corresponding feedback subframe is after the subframe m.
  • the corresponding feedback subframe is after the subframe m, and the feedback subframe is configured as a downlink subframe or a subframe m according to the TDD uplink and downlink corresponding to the PDSCH HARQ timing after the reconfiguration.
  • the feedback information corresponding to the other downlink subframes is transmitted in the feedback subframe.
  • the user equipment may further determine the subframe h according to the TDD uplink and downlink configuration corresponding to the pre-configuration PDSCH HARQ timing.
  • the specific process refer to the corresponding process of the system in Figure 2, and details are not described here.
  • the user equipment may further perform an uplink and downlink conversion period of the TDD uplink and downlink configuration corresponding to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing and the PDSCH HARQ timing corresponding to the reconfiguration.
  • the determining of the subframe h is specifically determined by using the above method in the protocol; the user equipment may be notified after the network side determines; or may be determined by the network side and the user equipment after negotiation.
  • the embodiment of the present invention further provides a method for receiving feedback information.
  • the principle of the solution is similar to the network side device in the system for receiving feedback information in the embodiment of the present invention. See the implementation of the system, and the repetitions are not repeated here.
  • the method for receiving feedback information in the embodiment of the present invention includes the following steps:
  • Step 801 The network side device determines that the user equipment correctly receives the reconfiguration command from the network side on the downlink subframe k, and the reconfiguration changes the HARQ timing of the PDSCH.
  • Step 802 The network side device selects a downlink subframe in the subframe m and the subsequent subframe according to the reconfigured PDSCH.
  • the HARQ timing receives the feedback information, and receives the feedback information according to the PDSCH HARQ timing before the reconfiguration, for the downlink subframe in the subframe before the subframe h.
  • the network side device may determine the subframe m by using one of the following methods:
  • the T in the above manner may be specified in the protocol; the user equipment may be notified after being determined by the network side; or may be determined by the network side and the user equipment after negotiation. If the reconfiguration is RRC reconfiguration, the maximum reconfiguration delay specified by the system is 15ms; if the reconfiguration is MAC reconfiguration, the maximum reconfiguration delay specified by the system is 8ms.
  • the network side device may further determine the subframe m according to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing.
  • the network side device may further determine the subframe m according to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing.
  • the determining of the subframe m is specifically determined by using the above method in the protocol; the user equipment may be determined after the network side determines; or may be determined by the network side and the user equipment after negotiation.
  • the network side device can determine the frame h in the following manner.
  • the corresponding feedback subframe is after the subframe m.
  • the corresponding feedback subframe is after the subframe m, and the feedback subframe is configured as a downlink subframe or a subframe m according to the TDD uplink and downlink corresponding to the PDSCH HARQ timing after the reconfiguration.
  • the feedback information corresponding to the other downlink subframes is transmitted in the feedback subframe.
  • the network side device may further determine the subframe h according to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing.
  • the network side device may further determine the subframe h according to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing.
  • the network side device may further perform uplink and downlink conversion according to the TDD uplink and downlink configuration corresponding to the reconfiguration PDSCH HARQ timing and the TDD uplink and downlink configuration corresponding to the PDSCH HARQ timing after the reconfiguration.
  • the period determines the subframe h.
  • the determining of the subframe h is specifically determined by using the above method in the protocol; the user equipment may be notified after the network side determines; or may be determined by the network side and the user equipment after negotiation.
  • step 701 and step 702 may be combined to form a process for transmitting feedback information, that is, step 701 and step 702 are performed first, and then step 802 is performed, where step 801 and step 701 and step 702 have no necessary timing relationship. It is only necessary to ensure that step 801 is before step 802.
  • Example 1 For a UE configured with TDD inter-band carrier aggregation and different TDD uplink and downlink configurations on different bands, if the base station reconfigures its carrier aggregation carrier (RRC reconfiguration), and the reconfiguration will change the PDSCH HARQ timing, but does not change the uplink and downlink configuration on the Pcell (Primary Cell). Base After the carrier reconfiguration signaling is sent in the subframe k, the value of the subframe m is as shown in Table 2.
  • the subframe m overlaps with the subframe h, that is, the subframe m (including the subframe m)
  • the subsequent downlink subframe works according to the reconfigured HARQ timing, and the downlink subframe before the subframe m operates according to the HARQ timing before reconfiguration.
  • the subframe m is a subframe # ⁇ ' or a subframe # ⁇ "; the current radio frame number is a, the subframe # ⁇ ' is a subframe X in the radio frame a+1, and the subframe #x" is a radio frame. Subframe x in a+2.
  • the pre-reconfiguration and re-configuration of the PDSCH HARQ timing reference TDD uplink and downlink configuration is not necessarily a specific TDD uplink and downlink configuration on a member carrier.
  • the reference to the Uplink (UL) subframe in the TDD uplink and downlink configuration is definitely the UL subframe on the uplink primary carrier.
  • Example 2 For a UE configured with TDD inter-band carrier aggregation and using different TDD uplink and downlink configurations on different bands, if the base station reconfigures the carrier for carrier aggregation (RRC reconfiguration), and the reconfiguration will change the PDSCH. HARQ timing. After the base station sends the carrier reconfiguration signaling in the subframe k, the value of the subframe m is as shown in Table 3. The value of the subframe h is as shown in Table 4, that is, the subframe m (including the subframe m).
  • the subsequent downlink subframe works according to the reconfigured HARQ timing, and the downlink subframe before the subframe h (excluding the subframe h) operates according to the HARQ timing before reconfiguration, and the subframe h (including the subframe h) to the subframe
  • the downlink subframe between m does not feed back ACK/NACK, or the UE does not detect the downlink subframe between subframe h and subframe m,
  • the subframe m is a subframe # ⁇ ' or a subframe # ⁇ "; the current radio frame number is a, the subframe # ⁇ ' is a subframe X in the radio frame a+1, and the subframe #x" is a radio frame. Subframe x in a+2.
  • the subframe h is a subframe # ⁇ ' or a subframe # ⁇ "; the current radio frame number is a, the subframe # ⁇ ' is a subframe X in the radio frame a+1, and the subframe #x" is a radio frame.
  • Subframe X in a+2; X indicates that subframe m is subframe h.
  • the base station reconfigures the TDD uplink and downlink configuration (RRC reconfiguration). After the base station sends the reconfiguration signaling in the subframe k, the value of the subframe m is as shown in Table 3.
  • the value of the subframe h is as shown in Table 4, that is, the downlink subframe after the subframe m (including the subframe m) operates according to the reconfigured HARQ timing, and the downlink subframe before the subframe h (excluding the subframe h)
  • the frame operates according to the HARQ timing before reconfiguration, and the downlink subframe between the subframe h (including the subframe h) and the subframe m (excluding the subframe m) does not feed back ACK/NACK, or the UE does not detect the subframe h to A downlink subframe between subframes m.
  • the base station reconfigures the TDD uplink and downlink configuration (RRC reconfiguration).
  • RRC reconfiguration the TDD uplink and downlink configuration
  • the value of the subframe m is as shown in Table 3.
  • the value of the subframe h is determined according to the configuration before reconfiguration and the uplink and downlink conversion period lookup table 5 after reconfiguration.
  • the subframe h is a subframe # ⁇ ' or a subframe # ⁇ "; the current radio frame number is a, the subframe # ⁇ ' is a subframe X in the radio frame a+1, and the subframe #x" is a radio frame.
  • Subframe X in a+2; X indicates that the downlink subframe m is the downlink subframe h.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

La présente demande concerne le domaine technique des communications sans fil et, plus particulièrement, un procédé, un système et un dispositif pour envoyer et recevoir des informations de rétroaction, qui sont utilisées pour résoudre le problème consistant en ce qu'une station de base ne peut pas recevoir correctement les informations de rétroaction concernant l'UE parce que la station de base et l'UE ont différentes compréhensions des configurations dans une période de temps floue de reconfiguration dans l'art antérieur. Le procédé pour envoyer des informations de rétroaction dans la présente demande consiste en ce que : un équipement d'utilisateur détermine qu'une commande de reconfiguration provenant d'un côté réseau est correctement reçue dans une sous-trame de liaison descendante k, et après une reconfiguration pour modifier une synchronisation PDSCH HARQ, fournit en retour une sous-trame m et une sous-trame de liaison descendante ensuite selon la synchronisation PDSCH HARQ après reconfiguration, et fournit en retour une sous-trame de liaison descendante avant une sous-trame h selon la synchronisation PDSCH HARQ avant reconfiguration. La solution de la présente demande peut garantir une compréhension cohérente des configurations d'une station de base et de l'UE dans une période de temps floue de reconfiguration.
PCT/CN2013/071094 2012-02-02 2013-01-29 Procédé, système et dispositif d'envoi et de réception d'informations de rétroaction WO2013113272A1 (fr)

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