WO2013120430A1 - Procédé et dispositif de transmission de données en liaison montante - Google Patents

Procédé et dispositif de transmission de données en liaison montante Download PDF

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Publication number
WO2013120430A1
WO2013120430A1 PCT/CN2013/071459 CN2013071459W WO2013120430A1 WO 2013120430 A1 WO2013120430 A1 WO 2013120430A1 CN 2013071459 W CN2013071459 W CN 2013071459W WO 2013120430 A1 WO2013120430 A1 WO 2013120430A1
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WIPO (PCT)
Prior art keywords
uplink
bundling
subframes
harq
harq rtt
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PCT/CN2013/071459
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English (en)
Chinese (zh)
Inventor
徐婧
沈祖康
潘学明
Original Assignee
电信科学技术研究院
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Publication of WO2013120430A1 publication Critical patent/WO2013120430A1/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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to an uplink data transmission method and apparatus. Background technique
  • the LTE (Long Term Evolution) system the maximum transmit power of the UE (User Equipment) is limited, and each data packet can be used in a TTI (Transmission Time Interval). Power is limited, so under harsh channel conditions, uplink transmission will be difficult to achieve performance requirements.
  • the LTE system uses enhanced technology and introduces an uplink TTI bundling scheme.
  • the so-called TTI bundling scheme is that the UE transmits different RVs of the same TB (Transport Block) after channel coding in multiple subframes based on one scheduling indication of the base station.
  • the multiple uplink subframes are called a bundle (bound subframe bundle).
  • the bundle size (size) is 4, that is, a bundle contains four uplink subframes.
  • the UE transmits different RVs of the same TB in consecutive four uplink subframes, and the base station combines the received RVs and decodes them.
  • the same TB's transmit power is increased, resulting in higher received signal-to-noise ratio and throughput.
  • the uplink RTT (Round Tnp Tnne) is 8 ms
  • HARQ Hybrid Automatic Repeat Request, Hybrid Automatic
  • the number of processes of the retransmission request is 8; after the TTI bundling is configured, the duration of the uplink RTT is twice that of the original uplink RTT, that is, 16 ms, and the number of HARQ processes in one RTT is halved, that is, the number is 4.
  • the RTT can be defined as the time interval between the initial transmission and the retransmission of the same process. For the case of TTI bundling, the first subframe in the same process will prevail.
  • Each HARQ process transmits a different data block.
  • the total number of HARQ processes is the maximum possible value of the number of data blocks that have been transmitted at any one time point but have not received the transmission result (ie, the data block is correct or received incorrectly).
  • the number of consecutive uplink subframes is smaller than the specified bundle size, so the different RVs of the TB will be in non-continuous uplinks. Send within a sub-frame.
  • the TTI bundling operation is designed only for the uplink and downlink configurations 0, 1, and 6. The following will be introduced one by one.
  • the number of uplink HARQ processes is 7 in one RRT, and after the TTI bundling is configured, the number of uplink HARQ processes is 3 in one RRT.
  • a bundle contains 4 uplink subframes.
  • the number of uplink HARQ processes is 4 in one RRT; and after TTI bundling is configured, the number of uplink HARQ processes is 2 in one RRT.
  • the bundle contains 4 uplink subframes.
  • the number of uplink HARQ processes is 6 in one RRT, and after the TTI bundling is configured, the number of uplink HARQ processes is 3 in one RRT.
  • a bundle contains 4 uplink subframes.
  • the bundle size is small. Even some TDD uplink and downlink configurations (such as uplink and downlink configurations 2, 3, 4, and 5) do not support TTI bundling, which limits uplink coverage. Summary of the invention
  • Embodiments of the present invention provide an uplink data transmission method and apparatus for improving transmission efficiency of uplink data.
  • An uplink data transmission method comprising:
  • the terminal separately transmits different redundancy versions of the first data transmission block TB on the K subframes in the Nth bundling-HARQ RTT;
  • the terminal receives the uplink control signaling sent by the network side and performs subsequent processing on the subframe n in the Nth Bundling-HARQ RTT, where the uplink control signaling is used to indicate the transmission result of the first TB and the N+ Data transmission mode on K subframes in one bundling-HARQ RTT;
  • the K subframes correspond to the same HARQ process number as the K subframes in the N+1th bundling-HARQ RTT; the bundling-HARQ RTT is the hybrid automatic repeat request HARQ round trip time RTT when the TTI bundling scheme is bound to the subframe. .
  • An uplink data transmission method comprising:
  • the network side respectively receives different redundancy versions of the first data transmission block TB sent by the terminal on the K subframes in the Nth bundling-HARQ RTT;
  • the network side proceeds to the terminal on the subframe n in the Nth bundling-HARQ RTT according to the transmission result of the first TB. Transmitting uplink control signaling, where the uplink control signaling is used to indicate a transmission result of the first TB and a data transmission manner on K subframes in the N+1th bundling-HARQ RTT;
  • Bundling-HARQ RTT is the hybrid automatic repeat request HARQ round-trip time RTT when the TTI bundling scheme is bound to the subframe.
  • An uplink data transmission device comprising:
  • a sending unit configured to separately send different redundancy versions of the first data transmission block TB on the K subframes in the Nth bundling-HARQ RTT;
  • a processing unit configured to receive uplink control signaling sent by the network side and perform subsequent processing on the subframe n in the Nth bundling-HARQ RTT, where the uplink control signaling is used to indicate the first data transmission block TB Transmission result and data transmission manner on K subframes in the N+1th bundling-HARQ RTT;
  • Bundling-HARQ RTT is the hybrid automatic repeat request HARQ round-trip time RTT when the TTI bundling scheme is bound to the subframe.
  • An uplink data transmission device comprising:
  • a receiving unit configured to separately receive different redundancy versions of the first data transmission block TB sent by the terminal on the K subframes in the Nth bundling-HARQ RTT;
  • control unit configured to send uplink control signaling to the terminal on the subframe n in the Nth bundling-HARQ RTT according to the transmission result of the first TB, where the uplink control signaling is used to indicate the transmission result of the first TB And a data transmission method on K subframes in the N+1th bundling-HARQ RTT;
  • Bundling-HARQ RTT is the hybrid automatic repeat request HARQ round-trip time RTT when the TTI bundling scheme is bound to the subframe.
  • the UE is allowed to use a bundle composed of at least two uplink subframes to transmit different RVs of the same data packet, and correspondingly, the base station is allowed.
  • a bundle composed of at least two uplink subframes receives different RVs of the same data packet, thereby effectively increasing the data transmission power, enhancing the data reception quality, thereby improving the uplink coverage effect and improving the uplink transmission gain.
  • DRAWINGS 1 is a schematic diagram of a TTI bundling configuration in an FDD LTE system in the prior art; FIG.
  • FIG. 2 is a schematic diagram of a TTI bundling configuration in an uplink and downlink configuration 0 in a TDD LTE system in the prior art
  • FIG. 3 is a schematic diagram of a TDD LTE system in the prior art
  • FIG. 4 is a schematic diagram of a TTI bundling configuration in the uplink and downlink configuration 6 in the TDD LTE system in the prior art
  • FIG. 5 is a schematic flowchart of a method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of another method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a TTI bundling configuration in Embodiment 1 of the present invention.
  • FIG. 8 is a schematic diagram of a TTI bundling configuration in Embodiment 2 of the present invention.
  • FIG. 9 is a schematic diagram of a TTI bundling configuration in Embodiment 3 of the present invention.
  • FIG. 10 is a schematic diagram of a TTI bundling configuration in Embodiment 4 of the present invention.
  • FIG. 11 is a schematic diagram of a TTI bundling configuration in Embodiment 5 of the present invention.
  • FIG. 12 is a schematic diagram of a TTI bundling configuration in Embodiment 6 of the present invention.
  • FIG. 13 is a schematic diagram of a TTI bundling configuration in Embodiment 7 of the present invention.
  • FIG. 14 is a schematic diagram of a TTI bundling configuration in Embodiment 8 of the present invention.
  • FIG. 15 is a schematic diagram of a TTI bundling configuration in Embodiment 9 of the present invention.
  • FIG. 16 is a schematic diagram of a TTI bundling configuration in Embodiment 10 of the present invention.
  • FIG. 17 is a schematic diagram of a TTI bundling configuration in Embodiment 11 of the present invention.
  • FIG. 18 is a schematic structural diagram of a device according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of another apparatus according to an embodiment of the present invention. detailed description
  • a corresponding TTI bundling scheme is designed, that is, according to the number of uplink subframes in each radio frame (ie, Radio frame), the UE will be at least two in a bundle.
  • the different RVs of the same TB after channel coding are transmitted on the uplink subframe to implement multiple transmissions of the same uplink data.
  • the base station also needs to be in each bundle according to the number of uplink subframes in each radio frame.
  • the different RVs of the same TB after channel coding sent by the UE are received on at least two uplink subframes, and are decoded after combining.
  • an uplink data transmission method provided by an embodiment of the present invention includes the following steps:
  • Step 50 The terminal sends different redundancy versions of the first TB on the K subframes in the Nth bundling-HARQ RTT.
  • Step 51 The terminal receives the uplink control signaling sent by the network side and performs subsequent processing on the subframe n in the Nth bundling-HARQ RTT, where the uplink control signaling is used to indicate the transmission result of the first TB and is in the Nth +1 data transmission methods on K subframes in the bundled-HARQ RTT;
  • N is an integer not less than 0;
  • K is an integer greater than 1, and K subframes in the Nth bundled-HARQ RTT and the K subframes in the N+1th bundling-HARQ RTT correspond to the same HARQ process
  • Bundling-HARQ RTT is the HARQ RTT when the TTI bundling scheme is used, and the bundling-HARQ RTT can be twice the HARQ RTT when the TTI bundling scheme is not used.
  • the data transmission manner on the K subframes in the (N+1)th Bundling-HARQ RTT includes the case where data is not transmitted on K subframes in the (N+1
  • the timing relationship between the subframe n in the step 51 and the last subframe of the K subframes in the Nth bundling-HARQ RTT complies with the uplink HARQ timing relationship defined in the LTE system protocol, that is, 3GPP 36.213. That is, when the subframe n is a non-bundling, the UE specified by the LTE system protocol receives the subframe in which the PHICH information corresponding to the uplink packet in the last subframe of the K subframes in the Nth bundled-HARQ RTT is located.
  • the uplink control signaling received by the terminal in step 51 includes at least an ACK NACK (acknowledgement/negative acknowledgement) indication.
  • the uplink control signaling may include UL grant (uplink scheduling grant) signaling.
  • the terminal receives the uplink control signaling sent by the network side and performs subsequent processing on the subframe n in the Nth bundling-HARQ RTT.
  • the specific implementation may be as follows:
  • the uplink control signaling indicates retransmission of the first TB and does not indicate to send the second TB, such as receiving the NACK and not receiving the UL grant signaling, the K subframes in the N+1th bundling-HARQ RTT Sending different redundancy versions of the first TB respectively;
  • the uplink control signaling indicates that the first TB is not retransmitted and does not indicate to send the second TB, for example, if the ACK is received and the UL grant signaling is not received, the data block is not sent;
  • the uplink control signaling indicates that the second TB is sent, for example, the ACK is received and the UL grant signaling is received, the different redundancy versions of the second TB are respectively sent on the K subframes in the N+1th bundling-HARQ RTT. .
  • K is an integer greater than 4;
  • K is an integer greater than 1.
  • Example 1 when the TDD uplink and downlink subframe configuration 0 is used, the value of K is 7 or 8;
  • Example 2 When the TDD uplink and downlink subframe configuration 1 is used, the value of K is 5;
  • Example 3 When the TDD uplink and downlink subframe configuration 2 is used, the value of K is 3 or 2;
  • Example 5 When the TDD uplink and downlink subframe configuration 4 is used, the value of K is 4;
  • Example 6 when the TDD uplink and downlink subframe configuration 5 is used, the value of K is 2;
  • Example 7 when the TDD uplink and downlink subframe configuration 6 is used, the value of K is 8 or 6;
  • the number of processes of the bundling-HARQ may be floor(MZK), where M is the number of uplink subframes included in the bundling-HARQ RTT; floor indicates rounding down.
  • the K subframes in the Nth bundling-HARQ RTT are specific or arbitrary consecutive K subframes in the uplink subframe set in the Nth bundled-HARQ RTT.
  • the row subframe set includes all uplink subframes in the Nth bundling-HARQ RTT;
  • the K subframes in the Nth bundling-HARQ RTT are the subframes corresponding to the mth bundling-HARQ process, and the subframe corresponding to the mth bundling-HARQ process is In the uplink subframe set in the Nth bundling-HARQ RTT, from (ml)xK+1 subframes to K subframes of the mxKth subframe, that is, ⁇ (ml)xK+l, (ml)xK+2, Each sub-frame in mxK ⁇ ; m is any positive integer less than floor(M/K)+l.
  • the bundling-HARQ process number can start from 0 or 1, but it is recorded as the first bundling-HARQ process.
  • an embodiment of the present invention provides an uplink data transmission method, including the following steps: Step 60: The network side separately receives different verbs of the first TB sent by the terminal in K subframes in the Nth bundling-HARQ RTT. Remaining version;
  • Step 61 The network side sends uplink control signaling to the terminal on the subframe n in the Nth bundling-HARQ RTT according to the transmission result of the first TB, where the uplink control signaling is used to indicate the transmission result of the first TB and Data transmission mode on K subframes in the N+1th bundling-HARQ RTT;
  • the K subframes correspond to the same HARQ process number as the K subframes in the N+1th bundling-HARQ RTT; the bundling-HARQ RTT is the HARQ RTT when the TTI bundling scheme is used, and the bundling-HARQ RTT may be the unused TTI
  • the bundling scheme is twice as large as the HARQ RTT.
  • the data transmission manner on the K subframes in the N+1th bundling-HARQ RTT includes the case where data is not transmitted on K subframes within the N+1th bundling-HARQ RTT.
  • the timing relationship between the subframe n in the step 61 and the last subframe in the K subframes in the Nth bundling-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol, that is, the subframe.
  • the UE specified by the LTE system protocol receives the subframe in which the PHICH information corresponding to the uplink packet in the last subframe of the K subframes in the Nth bundled-HARQ RTT is located.
  • the uplink control signaling sent by the network side in step 61 includes at least an ACK NACK indication.
  • the uplink control signaling may include UL grant signaling.
  • the network side sends the uplink control signaling to the terminal in the subframe n in the Nth bundling-HARQ RTT according to the transmission result of the first TB, and the specific implementation may be as follows: If the first TB transmission fails and the terminal is not required to send the second TB, the terminal is instructed by the uplink control signaling (such as NACK) to send the first TB on the K subframes in the N+1th bundling-HARQ RTT.
  • the uplink control signaling such as NACK
  • the first TB transmission is successful and the terminal is not required to send the second TB, the first TB transmission is successfully indicated by the uplink control signaling (such as ACK);
  • the uplink control signaling such as ACK
  • the terminal is instructed by the uplink control signaling (such as ACK and UL grant signaling) to send the K subframes in the N+1th bundling-HARQ RTT.
  • the uplink control signaling such as ACK and UL grant signaling
  • K is an integer greater than 4;
  • K is an integer greater than 1.
  • Example 1 when the TDD uplink and downlink subframe configuration 0 is used, the value of K is 7 or 8;
  • Example 2 When the TDD uplink and downlink subframe configuration 1 is used, the value of K is 5;
  • Example 3 When the TDD uplink and downlink subframe configuration 2 is used, the value of K is 3 or 2;
  • Example 5 When the TDD uplink and downlink subframe configuration 4 is used, the value of K is 4;
  • the number of processes of the bundling-HARQ may be floor(MZK), where M is the number of uplink subframes included in the bundling-HARQ RTT; floor indicates rounding down.
  • the K subframes in the Nth bundling-HARQ RTT are specific or arbitrary consecutive K subframes in the uplink subframe set in the Nth bundled-HARQ RTT. .
  • the K subframes in the Nth bundling-HARQ RTT are the subframes corresponding to the mth bundling-HARQ process, and the subframe corresponding to the mth bundling-HARQ process is In the uplink subframe set in the Nth bundling-HARQ RTT, from (ml)xK+1 subframes to K subframes of the mxKth subframe, that is, ⁇ (ml)xK+l, (ml)xK+2, Each sub-frame in mxK ⁇ ; m is any positive integer less than floor(M/K)+l.
  • the bundling-HARQ process number can start from 0 or 1, but it is recorded as the first bundling-HARQ process.
  • Embodiment 1 is a diagrammatic representation of the present invention.
  • the TDD uplink and downlink configuration is used, and the Bundle size, that is, K is 8, and only one bundling-HARQ process is supported.
  • the bundling-HARQ process corresponds to a continuous eight of the uplink subframe sets in a bundling-HARQ RTT.
  • the K subframes in the bundling-HARQ RTT are: the uplink subframe 2 of the radio frame P, the uplink subframe 3, the uplink subframe 4, the uplink subframe 7, the uplink subframe 8 and the uplink subframe 9, and the wireless
  • the uplink subframe 2 and the uplink subframe 3 of the frame P+1 are as shown in FIG. 7; or
  • Uplink subframe 3 uplink subframe 4, uplink subframe 7, uplink subframe 8 and uplink subframe 9 of the radio frame P, and uplink subframe 2, uplink subframe 3 and uplink subframe 4 of the radio frame P+1 Or,
  • Uplink subframe 4 uplink subframe 7, uplink subframe 8 and uplink subframe 9 of the radio frame P, and uplink subframe 2, uplink subframe 3, uplink subframe 4, and uplink subframe 7 of the radio frame P+1 Or,
  • Uplink subframe 8 and uplink subframe 9 of radio frame P and uplink subframe 2, uplink subframe 3, uplink subframe 4, uplink subframe 7, uplink subframe 8, and uplink subframe 9 of radio frame P+1 Or,
  • Uplink subframe 9 of radio frame P and uplink subframe 2, uplink subframe 3, uplink subframe 4, uplink subframe 7, uplink subframe 8 and uplink subframe 9 of radio frame P+1, and radio frame P +2 uplink subframe 2; or,
  • Uplink subframe 2 uplink subframe 3, uplink subframe 4, uplink subframe 7, uplink subframe 8 and uplink subframe 9 of the radio frame P+1, and uplink subframe 2 and uplink subframe of the radio frame P+2 Frame 3.
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT.
  • the system-defined redundancy version L ⁇ K the repeated use is not excluded.
  • RV0 -> RV2 -> RV3 -> RV1->RV0 -> RV2 -> RV3 -> RV1 of the uplink packet can be separately sent, but not limited to the above combination;
  • Step 2 The UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the physical hybrid automatic request retransmission indication channel (Pff1CH); or
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • the timing relationship between the last subframes of the K subframes in the N bundles-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol, for example, in the first case as shown in FIG. 5, the downlink subroutine
  • the frame n 10 x ( P+2 ); that is, the subframe in which G in FIG. 7 is located;
  • Step 3 The UE retransmits the RVO of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, and the RV2 -> RV3 ->RV1->RV0-> RV2 -> RV3 -> RV1, or transmit new upstream packets of RV0 -> RV2 - > RV3 ->RV1->RV0-> RV2 -> RV3 -> RV1, or no data.
  • Step 1 The base station receives RV0 -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3 -> RV1 of the uplink data packet sent by the terminal in each of the K subframes in the Nth bundling-HARQ RTT. And merge them to determine whether the uplink transmission is successful;
  • Step 2 The base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result;
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives the RV0 of the uplink data packet retransmitted by the UE on the K subframes in the N+1th bundling-HARQ RTT -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3 -> RV1, or the new upstream packet transmitted RV0 -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3 -> RV1.
  • the number of bundling-HARQ processes is 1; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the TDD uplink and downlink configuration is used, and the Bundle size, that is, K is 7, supports two bundling-HARQ processes, where the first bundling-HARQ process corresponds to the first in the uplink subframe set in the bundling-HARQ RTT.
  • the seventh uplink subframe, the second bundling-HARQ process corresponds to the eighth to the fourteenth uplink subframes in the uplink subframe set in the bundled-HARQ RTT.
  • the K uplink subframes corresponding to a bundling-HARQ process are: an uplink subframe 2, an uplink subframe 3, an uplink subframe 4, an uplink subframe 7, an uplink subframe 8, and an uplink subframe 9 of the radio frame P.
  • the K uplink subframes corresponding to another bundling-HARQ process are: the uplink subframe 3, the uplink subframe 4, and the uplink subframe 7 of the radio frame P+1, respectively Uplink subframe 8 and uplink subframe 9, and uplink subframe 2 and uplink subframe 3 of radio frame P+2, as shown in FIG.
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT, for example, RV0 -> RV2 -> RV3 -> RVl-> RV0 of the uplink data packet can be separately sent.
  • RV2 -> RV3 without losing a 'It, ⁇ according to the sub-frame J'l page order another 'J send RV0 -> RV2 -> RV3 -> RV1 -> RV0 -> RV2 -> RV3;
  • 30 ?? 836.321 defines 11 ⁇ version transmission order is 0,2,3,1, in the present invention RV version transmission order 0,1,2,3 or 0,2,3,1 is only an embodiment, no other restrictions RV version transmission order;
  • Step 2 The UE detects, in the downlink subframe n, that the base station automatically requests the retransmission indication channel through physical mixing.
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH);
  • DCI format 0 downlink control information format 0
  • the timing relationship between the subframe n and the last subframe of the K subframes in the Nth bundling-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol.
  • the downlink subframe ⁇ 10 ⁇ ( ⁇ +2 ), that is, the subframe in which G1 is located in FIG. 8;
  • Step 3 The UE retransmits the RVO of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, and the RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3, or transmit new upstream packets of RV0 -> RV2 -> RV3 -> RV1 -> RV0 -> RV2 -> RV3, or no data.
  • Step 1 the base station receives RV0 -> RV2 -> RV3 -> RVl -> RVO -> RV2 -> RV3 of the uplink data packet sent by the terminal in K subframes in the Nth bundled-HARQ RTT, and Merging, determining whether the uplink transmission is successful;
  • Step 2 The base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result;
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives RV0 -> RV2 -> RV3 -> RVl -> RVO -> RV2 -> RV3 of the uplink data packet retransmitted by the UE in K subframes in the N+1th bundling-HARQ RTT, or The new upstream packet is transmitted RV0 -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3.
  • the number of bundling-HARQ processes is 2; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the TDD uplink and downlink configuration 1 is used, and the Bundle size, that is, K is 5, and only one bundling-HARQ process is supported.
  • the bundling-HARQ process corresponds to five consecutive uplinks in the uplink subframe set in the bundling-HARQ RTT. Subframe.
  • the K subframes in the bundling-HARQ RTT are:
  • Uplink subframe 7 and uplink subframe 8 of radio frame P and uplink subframe 2, uplink subframe 3 and uplink subframe 7 of radio frame P+1; or
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT, for example, RV0 -> RV2 -> RV3 -> RVl-> RVO of the uplink data packet can be separately sent. ;
  • Step 2 The UE detects, in the downlink subframe n, that the base station automatically requests the retransmission indication channel through physical mixing.
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • PDCCH physical downlink control channel
  • subframe n The timing relationship between the last subframes of the K subframes in the N bundles-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol, for example, in the first case as shown in FIG. 9, the downlink subroutine
  • the frame n 10 x ( P+1 ) +6, that is, the subframe in which G in FIG. 9 is located;
  • Step 3 The UE retransmits the RVO of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, and the RV2 -> RV3 -> RVl-> RVO, or transfer new upstream packets of RV0 -> RV2 -> RV3 -> RVl-> RVO, or no data.
  • Step 1 Receive RV0 -> RV2 -> RV3 -> RVl-> RVO of the uplink data packet sent by the terminal on the K subframes in the second bundled-HARQ RTT, and combine them to determine whether the uplink transmission is successful.
  • Step 2 The base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result; or
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives RV0 -> RV2 -> RV3 -> RVl-> RV0 of the uplink data packet retransmitted by the UE in K subframes in the N+1th bundling-HARQ RTT, or a new uplink data packet RV0 - > RV2 - > RV3 _ > RV1-> RV0.
  • the number of bundling-HARQ processes is 1; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the TDD uplink and downlink configuration 2 is used, and the Bundle size, that is, K is 3, and only one bundling-HARQ process is supported.
  • the bundling-HARQ process corresponds to three consecutive uplinks in the uplink subframe set in the bundling-HARQ RTT. Subframe.
  • the K subframes in the bundling-HARQ RTT are:
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT, for example, RV0 -> RV2 of the uplink data packet may be separately sent;
  • Step 2 The UE detects, in the downlink subframe n, that the base station automatically requests the retransmission indication channel through physical mixing.
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • PDCCH physical downlink control channel
  • subframe n The timing relationship between the last subframes of the K subframes in the N bundles-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol, for example, in the first case as shown in FIG. 10, the downlink subroutine
  • the frame ⁇ 10 ⁇ ( ⁇ +1)+8, that is, the subframe in which G in Fig. 10 is located.
  • Step 3 The UE retransmits the RV0 -> RV2 of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, or transmits
  • the new upstream packet is RV0 -> RV2, or no data is transmitted.
  • Step 1 The base station receives RV0 _ > RV2 of the uplink data packet sent by the terminal on the K subframes in the Nth bundling-HARQ RTT, and combines them to determine whether the uplink transmission is successful.
  • Step 2 The base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result;
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives RV0 -> RV2 of the uplink data packet retransmitted by the UE, or RV0 -> RV2 of the new uplink data packet in the K subframes in the N+1th bundling-HARQ RTT.
  • the number of bundling-HARQ processes is 1; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the TDD uplink and downlink configuration 2 is used, and the Bundle size, that is, K is 2, supports two bundling-HARQ processes, where the first bundling-HARQ process corresponds to the first in the uplink subframe set in the bundling-HARQ RTT. And the second uplink subframe, the second bundling-HARQ process corresponds to the third and fourth uplink subframes in the uplink subframe set in the bundled-HARQ RTT.
  • the K uplink subframes corresponding to a bundling-HARQ process are:
  • the uplink subframe 2 and the uplink subframe 7 of the radio frame P; the K uplink subframes corresponding to another bundling-HARQ process are: the uplink subframe 2 and the uplink subframe 7 of the radio frame P+1, as shown in FIG. Show.
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth Bundling-HARQ RTT.
  • the RV0 _ > RV2 of the uplink data packet may be separately sent, without loss of generality.
  • the frame order is respectively sent RV0 -> RV2; 3GPP TS36.321 defines the RV version transmission order as 0, 2, 3, 1.
  • the RV version transmission order is 0, 1, 2, 3 or 0, 2, 3, 1 only
  • the other RV version transmission sequence is not limited;
  • Step 2 The UE detects, in the downlink subframe n, the ACK NACK indication sent by the base station through the physical hybrid automatic request retransmission indication channel (PWCHCH); or
  • PWCHCH physical hybrid automatic request retransmission indication channel
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • the timing relationship between the last subframes of the K subframes in the N bundles-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol.
  • the downlink subframe ⁇ 10 ⁇ ( ⁇ +1) +3 , that is, the subframe in which G1 is located in FIG. 11;
  • the downlink subframe ⁇ 10 ⁇ ( ⁇ +2)+3, that is, the subframe in which G2 in FIG. 11 is located;
  • Step 3 The UE retransmits the RV0 _ > RV2 of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, or transmits
  • the new upstream packet is RV0 -> RV2, or no data is transmitted.
  • Step 1 The base station receives RV0 _ > RV2 of the uplink data packet sent by the terminal on the K subframes in the Nth bundling-HARQ RTT, and combines them to determine whether the uplink transmission is successful.
  • Step 2 The base station sends the PHICH through the PHICH in the downlink subframe n according to the uplink transmission result.
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives RV0 _ > RV2 of the uplink data packet retransmitted by the UE, or RV0 _ > RV2 of the new uplink data packet in the K subframes in the N+1th bundling-HARQ RTT.
  • the number of bundling-HARQ processes is 2; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • the TDD uplink and downlink configuration 3 is used, and the Bundle size, that is, K is 6, and only one bundling-HARQ process is supported.
  • the bundling-HARQ process corresponds to six consecutive uplinks in the uplink subframe set in the bundling-HARQ RTT. Subframe.
  • the K subframes in the bundling-HARQ RTT are:
  • the uplink subframe 2 of the radio frame P, the uplink subframe 3 and the uplink subframe 4, and the uplink subframe 2, the uplink subframe 3, and the uplink subframe 4 of the radio frame P+1 are as shown in FIG.
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT, for example, RV0 -> RV2 -> RV3 -> RVl-> RVO of the uplink data packet can be separately sent.
  • Step 2 The UE detects, in the downlink subframe n, that the base station automatically requests the retransmission indication channel through physical mixing.
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • PDCCH physical downlink control channel
  • Step 3 The UE retransmits the RVO of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, and the RV2 -> RV3 -> RVl-> RVO -> RV2, or transmit new upstream packets of RVO -> RV2 -> RV3 -> RV1-> RV0 -> RV2, or no data.
  • Step 1 The base station receives RV0 -> RV2 -> RV3 -> RVl-> RVO -> RV2 of the uplink data packet sent by the terminal in K subframes in the Nth bundling-HARQ RTT, and combines them to determine Whether the uplink transmission is successful;
  • Step 2 The base station sends the PHICH through the PHICH in the downlink subframe n according to the uplink transmission result.
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives RV0 -> RV2 -> RV3 -> RVl-> RV0 -> RV2, or a new uplink of the uplink data packet retransmitted by the UE in K subframes in the N+1th bundling-HARQ RTT Packet RV0 ->
  • the number of bundling-HARQ processes is 1; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • the TDD uplink and downlink configuration 4 is used, and the Bundle size, that is, K is 4, and only one bundling-HARQ process is supported.
  • the bundling-HARQ process corresponds to four consecutive uplinks in the uplink subframe set in the bundling-HARQ RTT. Subframe.
  • the K subframes in the bundling-HARQ RTT are:
  • Uplink subframe 2 and uplink subframe 3 of radio frame P and uplink subframe 2 and uplink subframe 3 of radio frame P+1, As shown in Figure 13.
  • the process on the UE side is as follows:
  • Step 1 the UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT, for example, RV0 -> RV2 -> RV3 -> RV1 of the uplink data packet can be separately sent;
  • Step 2 The UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the physical hybrid automatic request retransmission indication channel (PWCHCH); or
  • PWCHCH physical hybrid automatic request retransmission indication channel
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • PDCCH physical downlink control channel
  • Step 3 The UE retransmits the RVO of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, and the RV2 -> RV3 -> RV1, or transfer new upstream packets to RVO -> RV2 -> RV3 -> RV1, or not pass data.
  • Step 1 The base station receives RV0 -> RV2 -> RV3 -> RV1 of the uplink data packet sent by the terminal in K subframes in the Nth bundling-HARQ RTT, and combines them to determine whether the uplink transmission is successful. 2.
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result; or
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives RV0 -> RV2 -> RV3 -> RV1 of the uplink data packet retransmitted by the UE in K subframes in the N+1th bundling-HARQ RTT, or RV0 -> of the new uplink data packet.
  • the number of bundling-HARQ processes is 1; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • the TDD uplink and downlink configuration 5 is used, and the Bundle size, that is, K is 2, and only one bundling-HARQ process is supported.
  • the bundling-HARQ process corresponds to two consecutive uplinks in the uplink subframe set in the bundling-HARQ RTT. Subframe.
  • the K subframes in the bundling-HARQ RTT are:
  • the process on the UE side is as follows:
  • Step 1 The UE sends uplink data packets on K subframes in the Nth bundling-HARQ RTT.
  • Different redundancy versions such as RV0 -> RV2, which can send uplink packets separately;
  • Step 2 The UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the physical hybrid automatic request retransmission indication channel (Pff1CH); or
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • PDCCH physical downlink control channel
  • Step 3 The UE retransmits the RV0 _ > RV2 of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, or transmits
  • the new upstream packet is RV0 -> RV2, or no data is transmitted.
  • Step 1 The base station receives RV0 _ > RV2 of the uplink data packet sent by the terminal on the K subframes in the Nth bundling-HARQ RTT, and combines them to determine whether the uplink transmission is successful.
  • Step 2 The base station sends the PHICH through the PHICH in the downlink subframe n according to the uplink transmission result.
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives RV0 _ > RV2 of the uplink data packet retransmitted by the UE, or RV0 _ > RV2 of the new uplink data packet in the K subframes in the N+1th bundling-HARQ RTT.
  • the number of bundling-HARQ processes is 1; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • the TDD uplink and downlink configuration 6 is used, and the Bundle size, that is, K is 8, and only one bundling-HARQ process is supported, and the bundling-HARQ process corresponds to consecutive 8 consecutive uplink subframe sets in the bundling-HARQ RTT.
  • the K subframes in the bundling-HARQ RTT are: the uplink subframe 2 of the radio frame P, the uplink subframe 3, the uplink subframe 4, the uplink subframe 7 and the uplink subframe 8, and the radio frame P+1.
  • Uplink subframe 3 uplink subframe 4, uplink subframe 7 and uplink subframe 8 of the radio frame P, and uplink subframe 2, uplink subframe 3, uplink subframe 4, and uplink subframe 7 of the radio frame P+1 Or,
  • Uplink subframe 4 uplink subframe 7 and uplink subframe 8 of radio frame P, and uplink subframe 2, uplink subframe 3, uplink subframe 4, uplink subframe 7 and uplink subframe 8 of radio frame P+1 Or,
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT, for example, RV0 -> RV2 -> RV3 -> RVl-> RVO of the uplink data packet can be separately sent. - > RV2 - > RV3->RV1 ;
  • Step 2 The UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the physical hybrid automatic request retransmission indication channel (Pff1CH); or
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • PDCCH physical downlink control channel
  • Step 3 The UE retransmits the RVO of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, and the RV2 -> RV3 - > RVl-> RVO -> RV2 -> RV3->RV1, or RVO for transmitting new upstream packets -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3->RV1, or not data.
  • Step 1 The base station receives RV0 -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3->RV1 of the uplink data packet sent by the terminal in the K subframes in the Nth bundling-HARQ RTT. And merge them to determine whether the uplink transmission is successful;
  • Step 2 The base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result;
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives the RV0 of the uplink data packet retransmitted by the UE on the K subframes in the N+1th bundling-HARQ RTT -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3-> RV1, or new upstream packet RV0 -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3->RV1.
  • the number of bundling-HARQ processes is 1; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • the TDD uplink and downlink configuration is used, and the Bundle size, that is, K is 6, and supports 2 bundling-HARQs.
  • a process in which the first bundling-HARQ process corresponds to the first to sixth uplink subframes in the uplink subframe set in the bundling-HARQ RTT, and the second bundling-HARQ process corresponds to the seventh in the bundling-HARQ RTT The twelfth uplink subframe.
  • the K uplink subframes corresponding to a bundling-HARQ process are:
  • Uplink subframe 2 uplink subframe 3, uplink subframe 4, uplink subframe 7 and uplink subframe 8 of the radio frame P, and uplink subframe 2 of the radio frame P+1; K corresponding to another bundling-HARQ process
  • the uplink subframes are: uplink subframe 3, uplink subframe 4, uplink subframe 7 and uplink subframe 8 of the radio frame P+1, and uplink subframe 2 and uplink subframe 3 of the radio frame P+2; As shown in Figure 16.
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT, for example, RV0 -> RV2 -> RV3 -> RVl-> RVO of the uplink data packet can be separately sent.
  • RV0 -> RV2 -> RV3 -> RVl-> RVO of the uplink data packet can be separately sent.
  • - > RV2 without loss of generality, assume that RV0 - > RV2 - > RV3 - > RV1 -> RV0 - > RV2 are transmitted in the order of the sub-frames;
  • 3GPP TS36.321 defines the RV version transmission order as 0, 2, 3, 1
  • the RV version transmission sequence 0, 1, 2, 3 or 0, 2, 3, 1 is only an embodiment, and does not limit the transmission order of other RV versions;
  • Step 2 The UE detects, in the downlink subframe n, that the base station automatically requests the retransmission indication channel through physical mixing.
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by the downlink control information format 0 (DCI format 0) on the physical downlink control channel (PDCCH); subframe n and
  • DCI format 0 downlink control information format 0
  • the timing relationship between the last subframes of the K subframes in the N bundles-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol.
  • Step 3 The UE retransmits the RVO of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, and the RV2 -> RV3 -> RVl-> RVO -> RV2, or transfer new upstream packets to RV0 -> RV2 -> RV3 ->
  • Step 1 The base station receives RV0 -> RV2 -> RV3 -> RVl-> RV0 -> RV2 of the uplink data packet sent by the terminal in K subframes in the Nth bundled-HARQ RTT, and combines them to determine Whether the uplink transmission is successful;
  • Step 2 The base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result;
  • the base station sends an ACK NACK finger to the UE through the PHICH in the downlink subframe n according to the uplink transmission result. And transmitting UL grant signaling by using DCI format 0 on the PDCCH;
  • Step 3 The base station receives RV0 -> RV2 -> RV3 -> RVl-> RVO -> RV2, or a new uplink of the uplink data packet retransmitted by the UE in K subframes in the N+1th bundling-HARQ RTT Packet RVO -> RV2 -> RV3 -> RVl-> RVO -> RV2.
  • the number of bundling-HARQ processes is 2; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, and is 20 ms.
  • the FDD mode is adopted, and the Bundle size is K, which supports two bundling-HARQ processes, one of which is corresponding to the first to eighth uplink subframes in the bundling-HARQ RTT, and the other
  • the bundling-HARQ process corresponds to the ninth to the sixteenth uplink subframes in the bundling-HARQ RTT.
  • the K subframes in a bundling-HARQ RTT are: uplink subframe 0 of the radio frame P, uplink subframe 1, uplink subframe 2, uplink subframe 3, uplink subframe 4, uplink subframe 5, uplink Subframe 6 and uplink subframe 7;
  • K uplink subframes corresponding to another bundling-HARQ process are: uplink subframe 8 and uplink subframe 9 of radio frame P, and uplink subframe 0 of radio frame P+1 , uplink subframe 1, uplink subframe 2, uplink subframe 3, uplink subframe 4, and uplink subframe 5; as shown in FIG.
  • the process on the UE side is as follows:
  • Step 1 The UE sends different redundancy versions of the uplink data packet in the K subframes in the Nth bundling-HARQ RTT, for example, RV0 -> RV2 -> RV3 -> RVl-> RV0 of the uplink data packet can be separately sent. - > RV2 - > RV3->RV1 ;
  • Step 2 The UE detects, in the downlink subframe n, that the base station automatically requests the retransmission indication channel through physical mixing.
  • the UE detects, in the downlink subframe n, an ACK NACK indication sent by the base station through the PHICH, and UL grant signaling sent by DCI format 0 (downlink control information format 0) on the PDCCH (Physical Downlink Control Channel);
  • the timing relationship between the subframe n and the last subframe of the K subframes in the Nth bundling-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol, for example, as shown in FIG.
  • the downlink subframe ⁇ 10 ⁇ ( ⁇ +1)+1;
  • Step 3 The UE retransmits the RV0 of the uplink data packet in the K subframes in the N+1th bundling-HARQ RTT according to the detected ACK NACK indication, or the ACK NACK indication and the UL grant signaling, and the RV0 -> RV2 -> RV3 - > RVl-> RV0 -> RV2 -> RV3->RV1, or RV0 - > RV2 to transmit new upstream packets
  • Step 1 The base station separately receives the uplink sent by the terminal on the K subframes in the Nth bundled-HARQ RTT.
  • Step 2 The base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result;
  • the base station sends an ACK NACK indication to the UE through the PHICH in the downlink subframe n according to the uplink transmission result, and sends the UL grant signaling by using the DCI format 0 on the PDCCH;
  • Step 3 The base station receives the RV0 of the uplink data packet retransmitted by the UE on the K subframes in the N+1th bundling-HARQ RTT -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3-> RV1, or new upstream packet RV0 -> RV2 -> RV3 -> RVl-> RVO -> RV2 -> RV3->RV1.
  • the number of bundling-HARQ processes is 2; the bundling-HARQ RTT is twice the HARQ RTT when the TTI bundling scheme is not used, which is 16 ms.
  • an embodiment of the present invention further provides an uplink data transmission apparatus, where the apparatus includes: a sending unit 180, configured to separately send a first data transmission block TB on K subframes in an Nth bundling-HARQ RTT Different redundancy versions;
  • the processing unit 181 is configured to receive uplink control signaling sent by the network side and perform subsequent processing on the subframe n in the Nth bundling-HARQ RTT, where the uplink control signaling is used to indicate the first data transmission block TB Transmission result and data transmission method on K subframes in the N+1th bundling-HARQ RTT;
  • Bundling-HARQ RTT is the hybrid automatic repeat request HARQ round-trip time RTT when the TTI bundling scheme is bound to the subframe.
  • the bundling-HARQ RTT can be twice the HARQ RTT when the TTI bundling scheme is not used.
  • the timing relationship between the subframe n and the last subframe of the K subframes in the Nth bundling-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol.
  • the uplink control signaling includes an acknowledgement/negative acknowledgement ACK NACK indication.
  • the uplink control signaling further includes an uplink scheduling grant UL grant signaling.
  • processing unit 181 is configured to:
  • the uplink control signaling indicates that the first TB is retransmitted and the second TB is not sent, the different redundancy versions of the first TB are respectively sent on the K subframes in the N+1th bundling-HARQ RTT;
  • the uplink control signaling indicates that the first TB is not retransmitted and the second TB is not sent, the data block is not sent;
  • the uplink control signaling indicates that the second TB is sent, the different redundancy versions of the second TB are respectively sent on the K subframes in the N+1th bundling-HARQ RTT.
  • K is an integer greater than 4;
  • K is an integer greater than 1.
  • the value of K is 7 or 8;
  • the value of K is 3 or 2;
  • K is 8 or 6;
  • the number of processes of the bundling-HARQ is floor(MZK), where M is the number of uplink subframes included in the bundling-HARQ RTT; floor indicates rounding down.
  • the K subframes in the Nth bundling-HARQ RTT are specific or arbitrary consecutive Ks in the uplink subframe set in the Nth bundled-HARQ RTT. Subframes.
  • the K subframes in the Nth bundling-HARQ RTT are subframes corresponding to the mth bundling-HARQ process
  • the subframe corresponding to the mth bundling-HARQ process is the K subframes from the (ml)xK+l subframe to the mxKth subframe in the uplink subframe set in the Nth bundled-HARQ RTT; Any positive integer less than floor(M/K)+l.
  • an embodiment of the present invention further provides an uplink data transmission apparatus, where the apparatus includes: a receiving unit 190, configured to respectively receive, by using, a first data transmission sent by a terminal on K subframes in an Nth bundling-HARQ RTT Different redundancy versions of the block TB;
  • the control unit 191 is configured to send uplink control signaling to the terminal on the subframe n in the Nth bundling-HARQ RTT according to the transmission result of the first TB, where the uplink control signaling is used to indicate the transmission of the first TB The result and the data transmission mode on the K subframes in the N+1th bundling-HARQ RTT;
  • Bundling-HARQ RTT is the hybrid automatic repeat request HARQ round-trip time RTT when the TTI bundling scheme is bound to the subframe.
  • the bundling-HARQ RTT can be twice the HARQ RTT when the TTI bundling scheme is not used.
  • the timing relationship between the subframe ⁇ and the last subframe of the K subframes in the second bundled-HARQ RTT complies with the uplink HARQ timing relationship specified in the LTE system protocol.
  • the uplink control signaling includes an acknowledgement/negative acknowledgement ACK NACK indication.
  • the uplink control signaling further includes an uplink scheduling grant UL grant signaling.
  • control unit 191 is configured to:
  • the terminal is instructed by the uplink control signaling to send different redundancy versions of the first TB on the K subframes in the N+1th bundling-HARQ RTT. If the first TB transmission succeeds and the terminal is not required to send the second TB, the first TB transmission is successfully indicated by the uplink control signaling;
  • the terminal is instructed by the uplink control signaling.
  • Different redundancy versions of the second TB are respectively transmitted on K subframes in the N+1 bundling-HARQ RTTs.
  • K is an integer greater than 4;
  • K is an integer greater than 1.
  • the value of K is 7 or 8;
  • the value of K is 3 or 2;
  • K is 8 or 6;
  • the number of processes of the bundling-HARQ is floor(MZK), where M is the number of uplink subframes included in the bundling-HARQ RTT; floor indicates rounding down.
  • the K subframes in the Nth bundling-HARQ RTT are specific or arbitrary consecutive Ks in the uplink subframe set in the Nth bundled-HARQ RTT. Subframes.
  • the K subframes in the Nth bundling-HARQ RTT are subframes corresponding to the mth bundling-HARQ process
  • the subframe corresponding to the mth bundling-HARQ process is the K subframes from the (ml)xK+l subframe to the mxKth subframe in the uplink subframe set in the Nth bundled-HARQ RTT; Any positive integer less than floor(M/K)+l.
  • the beneficial effects of the present invention include:
  • the UE is allowed to use a bundle composed of at least two uplink subframes to transmit different RVs of the same data packet, and correspondingly, the base station is allowed.
  • a bundle composed of at least two uplink subframes receives different RVs of the same data packet, thereby effectively increasing the data transmission power, enhancing the data reception quality, thereby improving the uplink coverage effect and improving the uplink transmission gain.
  • 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 invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • a computer-usable storage medium 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 flows of the flowchart or in a block or blocks of the flowchart.

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

Abstract

L'invention porte sur un procédé et un dispositif de transmission de données en liaison montante, qui concernent le domaine technique des communications sans fil et sont utilisés pour améliorer le gain de transmission de données de liaison montante. Selon la présente invention, un équipement utilisateur (UE) est autorisé à utiliser un groupe constitué d'au moins deux sous-trames de liaison montante pour envoyer différentes versions redondantes (RV) du même paquet de données en moins d'un temps de propagation en boucle (RTT). En conséquence, une station de base est autorisée à recevoir différentes RV du même paquet de données avec un groupe constitué d'au moins deux sous-trames de liaison montante, ce qui accroît efficacement la puissance de transmission des données, améliore la qualité de réception des données et donc améliore les effets de couverture en liaison montante et améliore le gain de transmission en liaison montante.
PCT/CN2013/071459 2012-02-13 2013-02-06 Procédé et dispositif de transmission de données en liaison montante WO2013120430A1 (fr)

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