WO2013159597A1 - Procédé pour la transmission de données, équipement d'utilisateur et station de base - Google Patents

Procédé pour la transmission de données, équipement d'utilisateur et station de base Download PDF

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Publication number
WO2013159597A1
WO2013159597A1 PCT/CN2013/072121 CN2013072121W WO2013159597A1 WO 2013159597 A1 WO2013159597 A1 WO 2013159597A1 CN 2013072121 W CN2013072121 W CN 2013072121W WO 2013159597 A1 WO2013159597 A1 WO 2013159597A1
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Prior art keywords
data
group
user equipment
subframes
subframe
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PCT/CN2013/072121
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English (en)
Chinese (zh)
Inventor
张兴炜
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华为技术有限公司
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Publication of WO2013159597A1 publication Critical patent/WO2013159597A1/fr

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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
    • H04L1/1829—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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements

Definitions

  • the present invention relates to communications technologies, and in particular relates to a data transmission method, user equipment and a base station Background t
  • the basic unit of physical layer scheduling is subframe (1ms), so that a small time interval can make the application time delay in LTE smaller.
  • the UE User Equipment
  • the BLER Block Error Rate
  • block error rate Block Error Rate
  • the concept of Transmission (Transmission Time Interval) Bundling is proposed in LTE. The principle is to bind multiple consecutive uplink TTIs to the same UE and send pairs in these uplink TTIs.
  • the eNodeB (Evolved Node B) only feeds back the HARQ (Hybrid Automatic Repeat reQuest) ACK/NACK (positive/negative acknowledgement) after receiving all the bound uplink frames. In this way, the number of ACK/NACKs of the required HARQ can be reduced.
  • the uplink resource is allocated once and applied to all the bound uplink frames, so that the overhead of uplink resource allocation is also reduced.
  • TTI Bundle_Size the number of consecutively transmitted TTIs (TTI Bundle_Size) in TTI Bundling is defined as 4.
  • the eNodeB sends a UL grant (uplink scheduling permission command) to the UE in subframe n, the UE transmits the same transmission coding block in 4 consecutive uplink subframes of n + 4 to n + 7 respectively.
  • the different redundancy versions RV0, RV1, RV2, RV3, and 4 uplink subframes are bound together and transmitted through HARQ Process 0 (that is, the HARQ process with process number 0).
  • the eNodeB has a processing time of 4 ms (including the transmission delay).
  • the eNodeB feeds back an ACK or a NACK to the UE through a PHICH (Physical Hybrid ARQ Indicator Channel). 4
  • the eNodeB feedback NACK then the TTI Bundling corresponding to the HARQ Process 0 will be retransmitted from the subframe n+20.
  • the time interval for TTI Bundling retransmission in LTE is 16 TTIs, that is, 16 1 ms subframes.
  • the uplink HARQ retransmission of the TTI Bundling is adaptive, and the indicated parameter is used for transmission on the indicated resource band, otherwise it is non- Adaptive, using the same uplink resources and the same parameters for the initial transmission.
  • the UL grant includes DCI (Downlink Control Information) format 0 and DCI format 4, and is carried in a PDCCH (Physical Downlink Control Channel).
  • DCI Downlink Control Information
  • PDCCH Physical Downlink Control Channel
  • NDI New Data Indication
  • the UL grant is an initial transmission scheduling permission command
  • the NDI field is 0, the UL grant is a retransmission scheduling permission command.
  • the field composition of DCI format 0 is as shown in Table 1, including various scheduling parameters:
  • Frequency domain frequency hopping indicator (FH flag) 1 Resource Allocation (RA) [log 2 (N ⁇ (N ⁇ + l) / 2)] (Note 1)
  • DAI Downlink Assignment Indication
  • Redundancy Check 16 Note 1: "*] means round up, and N means UL system bandwidth, specifically the number of resource blocks (RBs) included.
  • the uplink coverage can be enhanced by modifying the TTI Bundle-Size. As shown in Figure 2, the original 4 uplink subframes are bound together and extended to 8 uplink subframes for transmission. At the same time, the retransmission interval is kept unchanged for 16 subframes. Although the existing method of extending the TTI Bundle-Size can enhance the uplink coverage to a certain extent, in some scenarios with limited coverage, the uplink coverage is still insufficient and needs to be further enhanced. Summary of the invention
  • the embodiment of the invention provides a data transmission method, a user equipment and a base station, which can enhance uplink coverage in communication.
  • the embodiment of the invention provides a data transmission method, including:
  • the plurality of subframes are divided into M non-contiguous groups, which are in order from the first group to the Mth group, M > 2, and each group includes one subframe or Multiple consecutive subframes;
  • An embodiment of the present invention further provides another data transmission method, including:
  • the initial transmission scheduling permission command is used to indicate that the user equipment sends the same data in multiple subframes and the scheduling parameter indicating the same data;
  • the multiple subframes are divided into M discontinuous a group, in order from the first group to the M group, M > 2, wherein each group includes one subframe or a plurality of consecutive subframes;
  • An embodiment of the present invention provides a base station, including:
  • An initial transmission scheduling sending module configured to send an initial transmission scheduling permission command to the user equipment, instructing the user equipment to send the same data in multiple subframes and a scheduling parameter indicating the same data;
  • the multiple subframes are divided into M a non-contiguous group, which is a first group to an Mth group, respectively, M > 2, and each of the groups includes one subframe or a plurality of consecutive subframes;
  • a data processing module configured to receive the same data sent by the user equipment in the multiple subframes, and feed back, to the user equipment, a response message that correctly receives the same data, where the user equipment is in one subframe of each group
  • the same data transmitted in one or more consecutive subframes corresponds to each set of data.
  • An embodiment of the present invention provides a user equipment, including:
  • An initial transmission scheduling receiving module configured to receive an initial transmission scheduling permission command of the base station, where the initial transmission scheduling permission command is used to indicate that the user equipment sends the same data in multiple subframes and the scheduling parameter indicating the same data;
  • the sub-frames are divided into M non-contiguous groups, which are in order from the first group to the M-th group, M > 2, and each of the groups includes one subframe or a plurality of consecutive subframes;
  • a data transceiver module configured to send the same data in the multiple subframes, and receive a response message that is correctly received by the base station to receive the same data, where the user equipment is in one subframe or multiple consecutive subframes of each group
  • the same data sent in is corresponding to each set of data.
  • the data transmission method, the user equipment, and the base station provided by the embodiments of the present invention have the following beneficial effects: dividing a plurality of subframes that perform TTI bundling into at least two non-contiguous groups, and the user equipment sends the same in multiple subframes of the group.
  • Different redundancy versions of the data can avoid deep fading on successive subframes and fail to reach the channel quality target, and at the same time obtain a certain time diversity gain, which can enhance the uplink coverage in communication.
  • FIG. 3 is a schematic flow chart of an embodiment of a data transmission method provided by the present invention.
  • FIG. 4 is a schematic flow chart of another embodiment of a data transmission method provided by the present invention.
  • FIG. 5 is a timing relationship diagram of a data transmission method provided by the present invention.
  • FIG. 6 is another timing relationship diagram of a data transmission method provided by the present invention.
  • 7 is still another timing relationship diagram of the data transmission method provided by the present invention.
  • 8 is a schematic structural diagram of an embodiment of a base station provided by the present invention.
  • FIG. 9 is a schematic structural diagram of an embodiment of a data processing module of a base station according to the present invention.
  • FIG. 10 is a schematic structural diagram of an embodiment of a user equipment provided by the present invention.
  • FIG. 11 is a schematic structural diagram of an embodiment of a data transceiver module of a user equipment provided by the present invention.
  • FIG. 3 it is a schematic flowchart of an embodiment of a data transmission method provided by the present invention.
  • the data transmission method provided in this embodiment includes the following steps:
  • the multiple subframes are divided into M non-contiguous groups. For the first group to the Mth group, M>2, the each group includes one subframe or multiple consecutive subframes; the subframes in each group are subframes for performing TTI bundling;
  • the first group includes consecutive sub-frames
  • the second group comprising K 2 consecutive sub-frames, ...
  • the first K0 [mu] [mu] group comprises consecutive subframes.
  • the total number of subframes in the M non-contiguous groups is greater than four. That is 4.
  • Each group of data corresponds to each hybrid automatic request retransmission process number (HARQ process number for short); each hybrid automatic request retransmission process number is used to identify scheduling and feedback during data initial transmission or retransmission. Is each of the sets of data.
  • HARQ process number for short
  • each hybrid automatic request retransmission process number is used to identify scheduling and feedback during data initial transmission or retransmission. Is each of the sets of data.
  • a redundancy version of the same data sent on every two adjacent subframes is different. If the number of subframes in the Xth group is K x >4, the redundancy version used in the previous subframe can be reused or the existing 4 redundancy versions (ie, RV0, RV1, RV2, RV3) can be extended to More, of which, 1 XM.
  • step S11 includes:
  • each initial transmission scheduling permission command corresponds to one subframe or a plurality of consecutive subframes of the group, and is used to indicate that the user equipment is in one subframe of the group Or each set of scheduling parameters of the same data sent in multiple consecutive subframes.
  • step S12 includes:
  • the user equipment If the data sent by the user equipment in any subframe of the Xth group is correctly received, the user equipment is fed back an acknowledgement message that correctly receives the Xth group of data; if the user equipment is not correctly received in the Xth group The data sent by all of the one or more consecutive subframes feeds back to the user equipment a negative acknowledgement message that does not correctly receive the Xth group of data; wherein, 1 XM.
  • the data transmission method provided in this embodiment further includes: receiving, when the Xth data retransmission time comes, receiving the Xth group of data retransmitted by the user equipment.
  • the retransmission time of the Xth group of data is the mth subframe after the first subframe in the Xth group; where m>8.
  • the data transmission method provided in this embodiment before the retransmission time of the Xth group of data arrives, further includes: sending a retransmission scheduling permission command to the user equipment, indicating retransmission of the Xth group of data
  • the scheduling parameters are updated, ie adaptive retransmission.
  • the base station receives an initial transmission permission permission command of the base station, where the initial transmission permission permission command is used to instruct the user equipment to send the same data in multiple subframes and a scheduling parameter indicating the same data;
  • the multiple subframes are divided into M a non-contiguous group, which is a first group to an Mth group, respectively, M > 2, and each of the groups includes one subframe or a plurality of consecutive subframes;
  • the first group includes consecutive sub-frames
  • the second group comprising K 2 consecutive sub-frames, ...
  • the first K0 [mu] [mu] group comprises consecutive subframes.
  • the total number of subframes in the M non-contiguous groups is greater than four. That is 4.
  • Each group of data corresponds to each hybrid automatic request retransmission process number (HARQ process number for short); each hybrid automatic request retransmission process number is used to identify scheduling and feedback during data initial transmission or retransmission. Is each of the sets of data.
  • HARQ process number for short
  • each hybrid automatic request retransmission process number is used to identify scheduling and feedback during data initial transmission or retransmission. Is each of the sets of data.
  • a redundancy version of the same data sent on every two adjacent subframes is different. If the number of subframes in the Xth group is K x >4, the redundancy version used in the previous subframe can be reused or the existing 4 redundancy versions (ie, RV0, RV1, RV2, RV3) can be extended to More, of which, 1 XM.
  • step S21 includes:
  • each initial transmission scheduling permission command corresponds to a set of subframes, and is used to indicate that the user equipment sends the same data in multiple subframes of a group.
  • step S22 includes:
  • the data is not sent in one subframe or multiple consecutive subframes of the remaining group;
  • the Y+1 group data is continuously sent in one subframe or multiple consecutive subframes of the Y+1 group; wherein, 1 Y ⁇ ⁇ -1 0
  • the user equipment receives the acknowledgement message correctly received by the base station and receives the second group of data, and the user equipment does not send the third group to the fifth group. Frame data; otherwise, continue to send the same data in the third group of subframes. And so on, until the fifth set of data is sent.
  • the time when the base station feeds back the response message of the Xth group of data correctly is the kth subframe after the last subframe in the Xth group; where, 1 X M, k > 4.
  • the base station correctly receives the data of any of the subframes in the Xth group it feeds back the positive response message that correctly receives the Xth group of data; otherwise, the feedback does not correctly receive the negative response message of the Xth group of data.
  • the data transmission method provided in this embodiment further includes: if, before the arrival of the Xth group data retransmission time, receiving an acknowledgement message fed back by the base station to correctly receive any set of data, Retransmit the Xth group of data;
  • the X-th group data is retransmitted when the X-th data retransmission time arrives; Among them, 1 XM.
  • the retransmission of the Xth group of data is stopped; if the base station does not receive the feedback The correct answer message of any set of data is received, and the X-th data is continuously retransmitted.
  • the retransmission time of the Xth group of data is the mth after the first subframe in the Xth group. Subframe; where m > 8.
  • the data transmission method provided in this embodiment before the retransmission time of the Xth group of data arrives, further includes: receiving a retransmission scheduling permission command of the base station; A scheduling parameter update indicating retransmission of the X-th data, that is, adaptive retransmission.
  • the data transmission method provided by the present invention will be described in detail below with reference to FIG. 5 to FIG.
  • FIG. 5 it is a timing relationship diagram of the data transmission method provided by the present invention.
  • the TTI bundling subframe is divided into two non-contiguous groups, including the first group and the second group, and the HARQ process IDs of the two groups are different.
  • the first group includes consecutive subframes
  • the second group includes ⁇ 2 consecutive subframes.
  • the two groups are non-contiguous with a certain interval in time.
  • the base station uses the UL grant (ie, the initial transmission grant permission command) to schedule uplink data, and the UE transmits uplink data on the PUSCH.
  • the parameters used for transmitting data (that is, time-frequency resources in one subframe) and modulation codes are carried in the UL grant.
  • the two groups can share one UL grant, and all the fields except the RV field and the HARQ process field in the UL grant are shared.
  • the scheduled subframes are the same except for the RV version of the data. That is, the two groups use the same parameters to send uplink data on the same time-frequency resource of different subframes.
  • the two groups can also each use a UL grant so that the two group parameters can be different.
  • the response message fed back by the base station to correctly receive data includes but is not limited to: a positive response message ACK indicating that the base station correctly receives data, and a negative response message indicating that the base station does not correctly receive data. NACK.
  • the timing relationship of the data transmission method provided by this embodiment is as follows:
  • the UE Assuming that the base station transmits a UL grant to the UE in subframe n, the UE is the same as the existing LTE Rel-8 protocol, and the UE starts from the 4th subframe after receiving the UL grant, and 4 consecutively in n + 4 to n + 7 In the uplink subframe, the data of the first group of subframes is sent.
  • the base station feeds back an ACK to the UE; if the data of the 4 subframes of the first group are not correctly received, the base station feeds back a NACK to the UE.
  • the base station feeds back the ACK/NACK of the first group of data to the UE in subframe n + 11 (i.e., in the fourth subframe after the UE transmits the last subframe of the first group).
  • the second group of subframes is after the base station feeds back the ACK/NACK subframe of the first group of data; if the feedback of the first group is ACK, the UE does not send the data of the second group of subframes;
  • the feedback is NACK, and the UE transmits the data of the second group of subframes in 4 consecutive uplink subframes of n + 12 to n + 15.
  • the "N" in the subframe n + 11 shown in Fig. 5 represents NACK, and this embodiment assumes that the feedback of the first group is NACK.
  • the base station If the data of any one of the 4 subframes of the second group is correctly received by the base station, the base station
  • the UE feeds back the ACK; if the data of the 4 subframes of the second group are not correctly received, the base station feeds back the NACK to the UE.
  • the base station feeds back the ACK/NACK of the second group of data to the UE in subframe n + 19 (i.e., in the fourth subframe after the UE transmits the last subframe of the second group).
  • the retransmission time interval is 16 subframes
  • the first group data retransmission time point is in the subframe n + 20
  • the base station feeds back the ACK/NACK subframe of the second group data in the first group data retransmission.
  • the UE does not retransmit the data of the subframe of the first group;
  • the UE has 4 consecutive uplink subframes of n + 20 to n + 23 in, Retransmit the data of the first group of subframes.
  • the "N" in the subframe n + 19 shown in FIG. 5 represents NACK, and this embodiment assumes that the feedback of the second group is NACK, and the retransmission time of the first group of data (in the subframe n + 20) comes. When retransmitting the first set of data.
  • the second group of data is retransmitted; And so on.
  • Retransmissions can be either adaptive or non-adaptive. If at the 4 subframes before the retransmission start position, as in the embodiment, the subframe n+16, the UE receives the retransmission scheduling grant command UL grant (in which the NDI field is 0) for indicating the uplink scheduling parameter. Then, the uplink HARQ retransmission of the TTI Bundling is adaptive, and the indicated parameter is used for transmission on the indicated resource band, otherwise it is non-adaptive, and the same uplink resource and the same parameter are used for transmission. . Referring to FIG. 6, another timing relationship diagram of the data transmission method provided by the present invention is shown.
  • the TTI bundling subframe is divided into two non-contiguous groups, including the first group and the second group, and the HARQ process IDs of the two groups are different.
  • the first group includes consecutive subframes
  • the second group includes K 2 consecutive subframes.
  • the two groups are non-contiguous with a certain interval in time.
  • K o K 2 can also take other values.
  • FIG. 7 another timing relationship diagram of the data transmission method provided by the present invention is shown.
  • the TTI bundling subframe is divided into two non-contiguous groups, including the first group and the second group, and the HARQ process IDs of the two groups are different.
  • the first group includes consecutive subframes
  • the second group includes K 2 consecutive subframes.
  • the two groups are non-contiguous with a certain interval in time.
  • the timing relationship of the data transmission method provided by this embodiment is as follows:
  • the UE sends the first group in the 4 consecutive uplink subframes of n + 4 to n + 7 starting from the 4th subframe after receiving the UL grant. Subframe data.
  • the base station feeds back an ACK to the UE; if the data of the 4 subframes of the first group are not correctly received, the base station feeds back a NACK to the UE.
  • the base station feeds back the ACK/NACK of the first group of data to the UE in subframe n + 11 (i.e., in the fourth subframe after the UE transmits the last subframe of the first group).
  • the second group of subframes is after the base station feeds back the ACK/NACK subframe of the first group of data; if the feedback of the first group is ACK, the UE does not send the data of the second group of subframes; For NACK, the UE transmits data of the second group of subframes in 6 consecutive uplink subframes of n + 12 to n + 17.
  • the "N" in the subframe n + 11 shown in FIG. 7 represents NACK, and this embodiment assumes that the feedback of the first group is NACK.
  • the base station feeds back an ACK to the UE; if the data of the 6 subframes of the second group are not correctly received, the base station feeds back a NACK to the UE.
  • the base station feeds back the ACK/NACK of the second group of data to the UE in subframe n + 21 (ie, the fourth subframe after the UE transmits the last subframe of the second group).
  • the retransmission time interval is 16 subframes
  • the first group data retransmission time point is in the subframe n + 20
  • the base station feeds back the ACK/NACK subframe of the second group data in the first group data retransmission.
  • the UE retransmits the data of the first group of subframes starting from the subframe n + 20.
  • the UE stops retransmitting the first group of children from the subframe n+22.
  • the data of the frame if the UE receives the feedback of the second group as the NACK in the subframe n + 21, the UE continues to retransmit the data of the subframe of the first group.
  • the "A" in the subframe n+21 shown in FIG. 7 indicates the ACK.
  • the UE receives the feedback of the second group as the ACK in the subframe n + 21, and stops the retransmission from the subframe n+22.
  • the data of the first group of sub-frames if the UE receives the feedback of the second group as the NACK in the subframe n + 21, the UE continues to retransmit the data of the subframe of the first group.
  • Retransmissions can be either adaptive or non-adaptive. If at the 4 subframes before the retransmission start position, as in the embodiment, the subframe n+16, the UE receives the retransmission scheduling grant command UL grant (in which the NDI field is 0) for indicating the uplink scheduling parameter. Then, the uplink HARQ retransmission of the TTI Bundling is adaptive, and the indicated parameter is used for transmission on the indicated resource band, otherwise it is non-adaptive, and the same uplink resource and the same parameter are used for transmission. .
  • the data transmission method provided by the embodiment of the present invention divides the TTI bundling subframe into at least two non-contiguous groups, and the user equipment sends different redundancy versions of the same data in multiple groups of subframes, which can avoid consecutive subframes.
  • the deep fading on the ground leads to the failure to meet the channel quality goal, while obtaining a certain time Diversity gain, which enhances upstream coverage in communications.
  • the base station performs ACK/NACK feedback on the two groups separately, avoiding waste of resources caused by unnecessary repeated data transmission, and improving resource utilization.
  • the embodiment of the present invention further provides a base station and a user equipment, which can implement the data transmission method in the foregoing embodiment, and enhance uplink coverage of the LTE.
  • FIG. 8 is a schematic structural diagram of an embodiment of a base station provided by the present invention.
  • the first transmission scheduling sending module 11 is configured to send an initial transmission scheduling permission command to the user equipment, instructing the user equipment to send the same data in multiple subframes and a scheduling parameter indicating the same data;
  • the multiple subframes are divided into M a non-contiguous group, which is a first group to an Mth group, respectively, M > 2, and each of the groups includes one subframe or a plurality of consecutive subframes;
  • the data processing module 12 is configured to receive the same data sent by the user equipment in the multiple subframes, and feed back, to the user equipment, a response message that correctly receives the same data, where the user equipment is in a sub-group of each group.
  • the same data transmitted in a frame or a plurality of consecutive subframes corresponds to each set of data.
  • the first group includes consecutive sub-frames
  • the second group comprising K 2 consecutive sub-frames, ...
  • the first K0 [mu] [mu] group comprises consecutive subframes.
  • the total number of subframes in the M non-contiguous groups is greater than four, that is, four.
  • Each group of data corresponds to each hybrid automatic request retransmission process number (HARQ process number for short); each hybrid automatic request retransmission process number is used to identify scheduling and feedback during data initial transmission or retransmission. Is each of the sets of data.
  • HARQ process number for short
  • each hybrid automatic request retransmission process number is used to identify scheduling and feedback during data initial transmission or retransmission. Is each of the sets of data.
  • a redundancy version of the same data sent on every two adjacent subframes This is different. If the number of subframes in the Xth group is K x >4, the redundancy version used in the previous subframe can be reused or the existing 4 redundancy versions (ie, RV0, RV1, RV2, RV3) can be extended to More, of which, 1 XM.
  • the data processing module 12 specifically includes:
  • the data receiving unit 121 is configured to receive the Xth group of data that is sent by the user equipment in one subframe or multiple consecutive subframes of the Xth group;
  • the response feedback processing unit 122 is configured to: if the data sent by the user equipment in any subframe of the Xth group is correctly received, feed back to the user equipment an acknowledgement message that correctly receives the Xth group of data; if not received correctly The data sent by the user equipment in all the one or more consecutive subframes of the Xth group feeds back to the user equipment a negative acknowledgement message that does not correctly receive the Xth group of data; wherein, 1 XM.
  • FDD Frequency Division Duplexing
  • TDD Time Division Duplexing
  • the data processing module 12 further includes:
  • the retransmission data receiving unit 123 is configured to receive the Xth group of data retransmitted by the user equipment when the Xth group data retransmission time comes.
  • the retransmission time of the Xth group of data is the mth subframe after the first subframe in the Xth group; where m>8.
  • the base station provided in this embodiment further includes:
  • the retransmission scheduling sending module 13 is configured to: before the retransmission time of the Xth group of data arrives, to the The user equipment sends a retransmission scheduling permission command, indicating a scheduling parameter update of the retransmission of the Xth group of data, that is, adaptive retransmission.
  • FIG. 10 it is a schematic structural diagram of an embodiment of a user equipment provided by the present invention.
  • the initial transmission scheduling receiving module 21 is configured to receive an initial transmission scheduling permission command of the base station, where the initial transmission scheduling permission command is used to indicate that the user equipment sends the same data in multiple subframes and the scheduling parameter that indicates the same data.
  • the plurality of subframes are divided into M non-contiguous groups, which are in order from the first group to the Mth group, M>2, and each of the groups includes one subframe or multiple consecutive subframes;
  • the data transceiver module 22 is configured to send the same data in the multiple subframes, and receive a response message that is received by the base station to correctly receive the same data, where the user equipment is in one subframe or multiple consecutive subgroups of each group.
  • the same data sent in the frame corresponds to each set of data.
  • the first group includes consecutive sub-frames
  • the second group comprising K 2 consecutive sub-frames, ...
  • the first K0 [mu] [mu] group comprises consecutive subframes.
  • the total number of subframes in the M non-contiguous groups is greater than four, that is, four.
  • Each group of data corresponds to each hybrid automatic request retransmission process number (HARQ process number for short); each hybrid automatic request retransmission process number is used to identify scheduling and feedback during data initial transmission or retransmission. Is each of the sets of data.
  • HARQ process number for short
  • each hybrid automatic request retransmission process number is used to identify scheduling and feedback during data initial transmission or retransmission. Is each of the sets of data.
  • a redundancy version of the same data sent on every two adjacent subframes is different. If the number of subframes in the Xth group is K x >4, the redundancy version used in the previous subframe can be reused or the existing 4 redundancy versions (ie, RV0, RV1, RV2, RV3) can be extended to More, of which, 1 XM. As shown in FIG. 11, the data transceiver module 22 specifically includes:
  • a data sending unit 221, configured to send the Yth group data in one subframe or multiple consecutive subframes of the Yth group
  • the response receiving processing unit 222 is configured to receive a response message that is correctly received by the base station to receive the Yth group of data. If the acknowledgement message of the Yth group correctly received by the base station is received, the one of the remaining groups is not received. Transmitting data in a subframe or a plurality of consecutive subframes; if receiving a negative acknowledgement message fed back by the base station that does not correctly receive the Yth group of data, continuing one subframe or a plurality of consecutive subframes in the Y+1th group Send the Y+1th group of data; where, 1 Y M-1.
  • the time when the base station feeds back the response message of the Xth group of data correctly is the kth subframe after the last subframe in the Xth group; where, 1 X M, k > 4.
  • the base station correctly receives the data of any of the subframes in the Xth group it feeds back the positive response message that correctly receives the Xth group of data; otherwise, the feedback does not correctly receive the negative response message of the Xth group of data.
  • the data transceiver module 22 further includes:
  • the first data retransmission unit 223 is configured to: if the acknowledgement message that correctly receives any set of data fed back by the base station is received before the Xth data retransmission time arrives, the Xth group data is not retransmitted; Before the arrival of the X-th data retransmission time, the acknowledgement message that correctly receives any set of data fed back by the base station is not received, and the X-th data is retransmitted when the X-th data retransmission time arrives; , 1 XM;
  • the second data retransmission unit 224 is configured to: when retransmitting the Xth group of data, if receiving an acknowledgement message that is correctly received by the base station and correctly receiving any group of data, stop retransmitting the Xth group of data; If the acknowledgement message fed back by the base station to correctly receive any set of data is not received, the X-th group of data is continuously retransmitted.
  • the retransmission time of the Xth group of data is the mth subframe after the first subframe in the Xth group; where m>8.
  • the user equipment provided in this embodiment further includes: a retransmission scheduling receiving module 23, configured to receive the weight of the base station before the retransmission time of the Xth group of data arrives And transmitting a scheduling permission command; the retransmission scheduling permission command is used to indicate a scheduling parameter update of the retransmission of the Xth group of data, that is, adaptive retransmission.
  • a retransmission scheduling receiving module 23 configured to receive the weight of the base station before the retransmission time of the Xth group of data arrives And transmitting a scheduling permission command; the retransmission scheduling permission command is used to indicate a scheduling parameter update of the retransmission of the Xth group of data, that is, adaptive retransmission.
  • the user equipment and the base station provided by the embodiment of the present invention divide the subframe in which ⁇ bundling is performed into at least two non-contiguous groups, and the user equipment sends different redundancy versions of the same data in subframes of multiple groups, which can avoid continuous
  • the deep fading on the sub-frame leads to the failure to achieve the channel quality target, and at the same time, a certain time diversity gain is obtained, which can enhance the uplink coverage in the communication.
  • the base station performs ACK/NACK feedback on the two groups separately, avoiding waste of resources caused by unnecessary repeated data transmission, and improving resource utilization.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

La présente invention se rapporte : à un procédé pour la transmission de données ; à un équipement d'utilisateur ; et à une station de base. Le procédé selon l'invention consiste : à transmettre une instruction de commande d'autorisation de programmation de transmission initiale, à un équipement d'utilisateur, afin de commander à l'équipement d'utilisateur de transmettre, dans une pluralité de sous-trames, les mêmes données ainsi que des paramètres de programmation qui indiquent les mêmes données ; et à diviser la pluralité sous-trames en M groupes non consécutifs, à savoir : un Groupe 1 à un Groupe M (où M ≥ 2), chaque groupe comprenant une seule sous-trame ou une pluralité de sous-trames consécutives (S11) ; et à recevoir les mêmes données envoyées par l'équipement d'utilisateur dans la pluralité de sous-trames, et à retourner à l'équipement d'utilisateur un message de réponse indiquant si les mêmes données ont été reçues de façon précise, les mêmes données envoyées par l'équipement d'utilisateur dans une seule sous-trame ou dans une pluralité de sous-trames consécutives dans chaque groupe correspondant à chaque ensemble de données (S12). Les modes de réalisation de la présente invention sont aptes à permettre une amélioration de la couverture sur la liaison montante dans le domaine des communications.
PCT/CN2013/072121 2012-04-26 2013-03-04 Procédé pour la transmission de données, équipement d'utilisateur et station de base WO2013159597A1 (fr)

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EP3429288B1 (fr) 2016-03-31 2021-05-05 Huawei Technologies Co., Ltd. Procédé de transmission de données, station de base et équipement utilisateur
EP3432635B1 (fr) * 2016-06-17 2021-09-01 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé et dispositif de transmission de données
CN108631960B (zh) * 2017-03-24 2021-08-20 华为技术有限公司 一种数据传输方法和相关设备
WO2019023849A1 (fr) * 2017-07-31 2019-02-07 Qualcomm Incorporated Autorisations de liaison montante et de liaison descendante pour opérations à bande étroite
WO2019191999A1 (fr) 2018-04-04 2019-10-10 华为技术有限公司 Procédé et appareil de détermination de ressources, procédé d'indication et appareil

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