WO2016184289A1 - Harq发送、接收方法、装置及节点 - Google Patents

Harq发送、接收方法、装置及节点 Download PDF

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Publication number
WO2016184289A1
WO2016184289A1 PCT/CN2016/079789 CN2016079789W WO2016184289A1 WO 2016184289 A1 WO2016184289 A1 WO 2016184289A1 CN 2016079789 W CN2016079789 W CN 2016079789W WO 2016184289 A1 WO2016184289 A1 WO 2016184289A1
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WIPO (PCT)
Prior art keywords
harq
state value
value
harq state
transport blocks
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PCT/CN2016/079789
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English (en)
French (fr)
Inventor
夏树强
戴博
左志松
梁春丽
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中兴通讯股份有限公司
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Priority to EP16795776.0A priority Critical patent/EP3297199B1/en
Priority to US15/573,864 priority patent/US10749636B2/en
Publication of WO2016184289A1 publication Critical patent/WO2016184289A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1806Go-back-N protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • H04L1/1614Details of the supervisory signal using bitmaps
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • H04L1/1635Cumulative acknowledgement, i.e. the acknowledgement message applying to all previous messages
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825Adaptation of specific ARQ protocol parameters according to transmission conditions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1864ARQ related signaling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • H04L1/1621Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers

Definitions

  • This application relates to, but is not limited to, the field of communications.
  • the node 1 (such as a terminal or a base station) is often not limited to receiving data transmitted by the node 2 (such as a base station or a terminal) on one carrier and one process.
  • the node 1 needs to feed back the hybrid automatic repeat request (HARQ) information to the node 2, that is, the error of the transport block on each carrier/process, and if the detection is correct, the feedback acknowledges ( Acknowledgement (abbreviated as ACK), otherwise, Negative Acknowledgement (NACK).
  • HARQ hybrid automatic repeat request
  • the terminal In the Long Term Evolution (LTE) system of the 3rd Generation Partnership Project (3GPP), the terminal (Node 1) needs the number of carriers configured according to the base station (Node 2).
  • the carrier mode of the carrier performs feedback of HARQ information. If the transmission mode of the carrier is spatial multiplexing mode, for example, each carrier has 2 transmission blocks, each carrier needs to feed back 2-bit HARQ information. Otherwise, each carrier needs feedback.
  • 1-bit HARQ information (1 transport block per carrier). For example, if the network configures 5 carriers for the terminal and the transmission mode of each carrier is spatial multiplexing mode, the terminal needs to feed back 10-bit HARQ information to the network in one uplink subframe.
  • the terminal needs to feed back the HARQ information according to the uplink and downlink configuration of the carrier.
  • TDD Time Division Duplexing
  • the terminal needs to feed back HARQ information of 9 downlink subframes in one uplink subframe (1 transport block per subframe, total 9 bits).
  • the terminal needs to feed back HARQ information (18 bits) of 18 downlink subframes in one uplink subframe.
  • node 2 can configure up to 32 carriers for node 1, and for frequency division duplexing (FDD), when non-spatial multiplexing is required, Feedback HARQ information
  • FDD frequency division duplexing
  • the number of HARQ information bits that need to be fed back during spatial multiplexing is 64.
  • the number of HARQ bits that need to be fed back is related to the uplink and downlink configuration information. If the uplink and downlink configuration is 5, the HARQ information bits that need to be fed back are up to 288.
  • the node 1 in order to save control signaling overhead and power consumption, improve coverage, reduce implementation complexity, and the like, the node 1 often needs to reduce the number of HARQ information bits fed back to the node 2, and the commonly used method has the same method. Binding the HARQ information of multiple transport blocks on the defined time domain or in the airspace, for example, binding the HARQ information of two transport blocks in the same carrier time domain or airspace. If both transport blocks are detected correctly, Then, the 1-bit ACK is fed back, otherwise the 1-bit NACK is fed back. In this way, the overhead of HARQ feedback can be reduced to half.
  • the node 2 cannot determine which transport block detection error in the bound transport block is based on the HARQ information fed back by the node 1.
  • the transport block to be bound is needed. Both are retransmitted, and this waste of resources has a negative impact on the throughput of the downlink system.
  • the bound transport blocks have strong correlation on the channel, and usually the channels of different carriers are independent. In the related art, when the node 2 sends data to the node 1 on multiple carriers, if still Binding the HARQ information of the transport blocks on multiple carriers by the method of binding transport blocks will further amplify the negative impact on system throughput.
  • This paper provides a HARQ transmission and reception method, device and node.
  • a hybrid automatic repeat request (HARQ) transmission method including: detecting a reception condition for N transport blocks; and generating a first length of M bits according to the reception situation a HARQ state value, wherein each of the values of the first HARQ state value has a value corresponding to a receiving condition of the N transport blocks when k falls within a preset value range, where k is The number of correctly received transport blocks in the received transport block, M, N, k are An integer, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N; the first HARQ state value transmitted as HARQ information.
  • HARQ hybrid automatic repeat request
  • generating, according to the receiving situation, the first HARQ state value of length M bits including: determining whether k falls within the preset value range; determining that k falls within the preset value In the case of the range, the first HARQ state value having a length of M bits is generated according to the reception condition.
  • the method further includes: generating, after the determining that k does not fall within the preset value range, generating a second HARQ state value having a length of W bits according to the receiving situation, where At least one of the values of the two HARQ state values is used to indicate that at least two receiving conditions of the N transport blocks when k does not fall within the preset value range, 2 ⁇ W ⁇ M; The second HARQ status value of the HARQ information.
  • the preset value range, the correspondence between all values of the first HARQ state value and the receiving condition of the N transport blocks, all values of the second HARQ state value, and the N Corresponding relationship of the receiving condition of the transport block is pre-configured at the transmitting end of the transport block and the receiving end of the transport block; or the preset value range, all values of the first HARQ state value, and the N transport blocks
  • the correspondence between the reception status, the value of all the second HARQ status values, and the reception status of the N transport blocks is determined by the transmitting end and the receiving end.
  • the preset value range comprising: greater than or equal to the threshold U and an integer less than or equal to N, wherein, 1 ⁇ U ⁇ N; or equal to or greater than the threshold U 1 and U is less than or equal to an integer of 2, wherein , 1 ⁇ U 1 ⁇ U 2 ⁇ N; or a threshold set H, wherein each element h in H satisfies 1 ⁇ h ⁇ N.
  • U is satisfied Integer; U 1 and U 2 are satisfied Integer; the element h in H is satisfied Positive integer.
  • generating the first HARQ state value of length M bits according to the receiving situation includes: determining Whether U ⁇ k ⁇ N is true; in the case where it is judged that U ⁇ k ⁇ N, Determining, in the value, the first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of the N transport blocks when U ⁇ k ⁇ N; and the determined first HARQ state value is generated.
  • the method further includes: determining, in a case where 0 ⁇ k ⁇ U, a second HARQ state value in the S values, where the S values of the second HARQ state value are At least one value is used to indicate at least two reception conditions of the N transport blocks when 0 ⁇ k ⁇ U, and S is an integer. Log 2 (S) ⁇ W; generating the determined second HARQ state value; transmitting the second HARQ state value as HARQ information.
  • generating the first HARQ state value of length M bits includes : Judging whether U 1 ⁇ k ⁇ U 2 holds; in the case where it is judged that U 1 ⁇ k ⁇ U 2 , Determining, in the value, the first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of the N transport blocks when U 1 ⁇ k ⁇ U 2 ; and the determined first HARQ state value is generated.
  • the method further comprising: determining to 0 ⁇ k ⁇ U 1 or U 2 ⁇ k ⁇ N case, the second HARQ state value in determining a value of T, wherein the second HARQ At least one of the T values of the state value is used to indicate at least two reception conditions of the N transport blocks when 0 ⁇ k ⁇ U 1 or U 2 ⁇ k ⁇ N, where T is an integer.
  • Log 2 (T) ⁇ W generating the determined second HARQ state value; transmitting the second HARQ state value as HARQ information.
  • generating the first HARQ state value of length M bits includes: determining whether k ⁇ H is established; In the case of k ⁇ H, in Determining, in the value, the first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of the N transport blocks when k ⁇ H; and the determined first HARQ state value is generated.
  • the method further includes: determining a second HARQ state value is determined in the R values, wherein at least one of the R values of the second HARQ state value is used to represent At least two reception cases of the N transport blocks, R is an integer, Log 2 (R) ⁇ W; generating the determined second HARQ state value; transmitting the second HARQ state value as HARQ information.
  • the N transport blocks are respectively located on multiple carriers.
  • a hybrid automatic repeat request (HARQ) receiving method comprising: receiving a first HARQ state value of length M bits, wherein the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of N transport blocks when k falls within a preset value range, and k is the number of transport blocks correctly received in the received transport block, M.
  • N, k is an integer, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N; according to the first HARQ state value, the receiving situation of the receiving end for the N transport blocks is determined.
  • the method further includes: receiving a second HARQ state value of length W bits, where at least one of all values of the second HARQ state value is used to indicate that k does not fall into the At least two receiving conditions of the N transport blocks when the preset value range is, 2 ⁇ W ⁇ M; determining, according to the second HARQ state value, the receiving situation of the receiving end for the N transport blocks.
  • a hybrid automatic repeat request (HARQ) sending apparatus comprising: a detecting module, configured to: detect connection to N transport blocks
  • the first generation module is configured to: generate a first HARQ state value of length M bits according to the receiving situation, where each of the values of the first HARQ state value takes one value Corresponding to a receiving condition of the N transport blocks when k falls within a preset value range, k is the number of transport blocks correctly received in the received transport block, and M, N, and k are integers, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N; the first transmitting module is configured to: transmit the first HARQ state value as HARQ information.
  • the first generating module includes: a determining unit, configured to: determine whether k falls within the preset value range; and the generating unit is configured to: determine, in the determining unit, that k falls into the In the case of the preset value range, the first HARQ state value having a length of M bits is generated according to the reception condition.
  • the device further includes: a second generating module, configured to: when the determining unit determines that k does not fall within the preset value range, generate a length of W bits according to the receiving situation a second HARQ state value, wherein at least one of all values of the second HARQ state value is used to indicate that at least two of the N transport blocks when k does not fall within the preset value range
  • the receiving condition, 2 ⁇ W ⁇ M; the second sending module is configured to: send the second HARQ state value as HARQ information.
  • the first sending module and the second sending module using the same channel format, sending the first HARQ state value and the second HARQ state value as HARQ information; or adopting different
  • the channel format transmits the first HARQ state value and the second HARQ state value as HARQ information.
  • the preset value range, the correspondence between all values of the first HARQ state value and the receiving condition of the N transport blocks, all values of the second HARQ state value, and the N Corresponding relationship of the receiving condition of the transport block is pre-configured at the transmitting end of the transport block and the receiving end of the transport block; or the preset value range, all values of the first HARQ state value, and the N transport blocks
  • the correspondence between the reception status, the value of all the second HARQ status values, and the reception status of the N transport blocks is determined by the transmitting end and the receiving end.
  • the preset value range comprising: greater than or equal to the threshold U and an integer less than or equal to N, wherein, 1 ⁇ U ⁇ N; or equal to or greater than the threshold U 1 and U is less than or equal to an integer of 2, wherein , 1 ⁇ U 1 ⁇ U 2 ⁇ N; or a threshold set H, wherein each element h in H satisfies 1 ⁇ h ⁇ N.
  • U is satisfied Integer; U 1 and U 2 are satisfied Integer; the element h in H is satisfied Positive integer.
  • the determining unit is configured to: determine, when the preset value range is an integer greater than or equal to the threshold U and less than or equal to N, whether U ⁇ k ⁇ N is established; Is set to: in the case where the judgment unit determines that U ⁇ k ⁇ N, Determining, in the value, the first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of the N transport blocks when U ⁇ k ⁇ N; and generates the determined first HARQ status value.
  • the device further includes: a second generating module, configured to: when the determining unit determines that 0 ⁇ k ⁇ U, determine a second HARQ state value in the S values, where At least one of the S values of the second HARQ state value is used to represent at least two receiving conditions of the N transport blocks when 0 ⁇ k ⁇ U, and S is an integer. Log 2 (S) ⁇ W; and generating the determined second HARQ state value; the second sending module is configured to: send the second HARQ state value as HARQ information.
  • a second generating module configured to: when the determining unit determines that 0 ⁇ k ⁇ U, determine a second HARQ state value in the S values, where At least one of the S values of the second HARQ state value is used to represent at least two receiving conditions of the N transport blocks when 0 ⁇ k ⁇ U, and S is an integer.
  • Log 2 (S) ⁇ W and generating the determined second HARQ state value
  • the second sending module is configured to: send the second HARQ state value
  • the determining unit is configured to determine whether U 1 ⁇ k ⁇ U 2 is established if the preset value range is an integer greater than or equal to the threshold U 1 and less than or equal to U 2 ;
  • the generating unit is configured to: when the determining unit determines that U 1 ⁇ k ⁇ U 2 , Determining, in the value, the first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of the N transport blocks when U 1 ⁇ k ⁇ U 2 ; and generates the determined first HARQ state value.
  • the device further includes: a second generating module, configured to: determine, in the T values, that the determining unit determines that 0 ⁇ k ⁇ U 1 or U 2 ⁇ k ⁇ N two HARQ state value, wherein, T a value of the second HARQ state value at least 0 ⁇ k ⁇ U 1 2 ⁇ k ⁇ N the N transport blocks or when U represents a value for at least Two receiving cases, T is an integer, Log 2 (T) ⁇ W; and generating the determined second HARQ state value; the second sending module is configured to: send the second HARQ state value as HARQ information.
  • a second generating module configured to: determine, in the T values, that the determining unit determines that 0 ⁇ k ⁇ U 1 or U 2 ⁇ k ⁇ N two HARQ state value, wherein, T a value of the second HARQ state value at least 0 ⁇ k ⁇ U 1 2 ⁇ k ⁇ N the N transport blocks or when U represents a value for at least Two receiving cases, T is an integer, Log 2 (
  • the determining unit is configured to: determine whether k ⁇ H is established if the preset value range is the threshold set H; and the generating unit is configured to: determine, by the determining unit In the case of k ⁇ H, in Determining, in the value, the first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of the N transport blocks when k ⁇ H; and generates the determined first HARQ status value.
  • the device further includes: a second generating module, configured to: determine, by the determining unit a second HARQ state value is determined in the R values, wherein at least one of the R values of the second HARQ state value is used to represent At least two reception cases of the N transport blocks, R is an integer, Log 2 (R) ⁇ W; and generating the determined second HARQ state value; the second sending module is configured to: send the second HARQ state value as HARQ information.
  • a second generating module configured to: determine, by the determining unit a second HARQ state value is determined in the R values, wherein at least one of the R values of the second HARQ state value is used to represent At least two reception cases of the N transport blocks, R is an integer, Log 2 (R) ⁇ W; and generating the determined second HARQ state value
  • the second sending module is configured to: send the second HARQ state value as HARQ information.
  • the N transport blocks are respectively located on multiple carriers.
  • a hybrid automatic repeat request (HARQ) receiving apparatus including: a first receiving module, configured to: receive a first HARQ state value having a length of M bits, where Each of the values of the first HARQ state value is a value One-to-one corresponds to a reception condition of N transport blocks when k falls within a preset value range, and k is the number of transport blocks correctly received in the received transport block, M, N, and k are integers, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N; the first determining module is configured to: determine, according to the first HARQ state value, a receiving situation of the receiving end for the N transport blocks.
  • the device further includes: a second receiving module, configured to: receive a second HARQ state value of length W bits, where at least one of all values of the second HARQ state value is used At least two receiving conditions of the N transport blocks when the k does not fall within the preset value range, 2 ⁇ W ⁇ M; the second determining module is configured to: according to the second HARQ state value, Determining the reception status of the N transport blocks by the receiving end.
  • a second receiving module configured to: receive a second HARQ state value of length W bits, where at least one of all values of the second HARQ state value is used At least two receiving conditions of the N transport blocks when the k does not fall within the preset value range, 2 ⁇ W ⁇ M; the second determining module is configured to: according to the second HARQ state value, Determining the reception status of the N transport blocks by the receiving end.
  • a node comprising: the hybrid automatic repeat request transmitting device described above, and/or the hybrid automatic repeat request receiving device.
  • a computer readable storage medium storing computer executable instructions for performing the method of any of the above.
  • the receiving condition for the N transport blocks is detected; and according to the receiving situation, the first HARQ state value of the M bit is generated, wherein each of the values of the first HARQ state value is used.
  • One-to-one corresponds to a reception condition of N transport blocks when k falls within a preset value range, and k is the number of transport blocks correctly received in the received transport block, M, N, and k are integers, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N;
  • the method of transmitting the first HARQ state value as the HARQ information solves the problem that the feedback HARQ information occupation overhead is large, and reduces the overhead of feeding back the HARQ information.
  • FIG. 1 is a flowchart of a hybrid automatic repeat request sending method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a hybrid automatic repeat request receiving method according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a hybrid automatic repeat request sending apparatus according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing an optional structure of a hybrid automatic repeat request transmitting apparatus according to an embodiment of the present invention.
  • FIG. 5 is a second schematic diagram of an alternative structure of a hybrid automatic repeat request sending apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a hybrid automatic repeat request receiving apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram showing an optional structure of a hybrid automatic repeat request receiving apparatus according to an embodiment of the present invention.
  • FIG. 9 is a flow chart of a hybrid automatic repeat request transmission method according to an application example of the present invention.
  • FIG. 1 is a flowchart of a hybrid automatic repeat request sending method according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:
  • Step S102 detecting a reception condition for N transport blocks
  • Step S104 Generate a first HARQ state value of length M bits according to the receiving situation, where each value of all the values of the first HARQ state value is one-to-one corresponding to when k falls within a preset value range.
  • a receiving condition of a transport block k is the number of transport blocks correctly received in the received transport block, M, N, k are integers, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N;
  • Step S106 transmitting a first HARQ status value as HARQ information.
  • the receiving condition of the transport block in which the number of correctly received transport blocks in the N transport blocks falls within a preset value range is represented by a first HARQ state value of less than N bits and having a length of M bits, thereby The bit length of the HARQ information is reduced to M, which solves the problem of large overhead of feedback HARQ information and reduces the overhead of feeding back HARQ information.
  • the node 1 and the node 2 stipulate that the HARQ information of the N transport blocks is fed back by M bits; the foregoing receiving conditions for the N transport blocks include: for a given N transport blocks, according to the index of the transport block, Determine if each transport block is correctly accepted. Assume that the receiving end receives 4 transport blocks: "Transport Block 1, Transport Block 2, Transport Block 3, Transport Block 4". The receiving end may detect that 4 of the 4 transport blocks receive 4 correct reception conditions, respectively. It is: “wrong, right, right, right”, “right, wrong, right, right”, “right, right, wrong, right”, “right, right, right, right”, “right, right, right, right, wrong”.
  • the number of transport blocks received by the receiving end is less than N, then, for the transport block that is not received. It can be processed in the same way as if it was not received correctly. For example, if the third transmission block in the above four transmission blocks is not sent by the transmitting end, or the receiving end does not receive it, and other transmission blocks are correctly received, then the receiving situation is The reception of "right, right, lost, right” and "right, right, wrong, right” is treated the same.
  • M may be a preset value.
  • a predetermined value of any one of N transmission blocks when the length is M bits and does not indicate that k falls within a preset value range may be used to indicate that k does not fall within the preset value range.
  • the following manner may be adopted: determining whether k falls within a preset value range; and if it is determined that k falls within a preset value range, generating a first length of M bits according to the receiving situation. HARQ status value.
  • the predetermined value of the reception condition of the N transmission blocks is used to indicate that the reception condition of the k does not fall within the preset value range.
  • a second HARQ state value having a length of W bits is generated according to the reception condition.
  • At least one of the values of the second HARQ state value is used to indicate that at least two receiving conditions of the N transport blocks when k does not fall within the preset value range, 2 ⁇ W ⁇ M; Two HARQ The status value is sent to the sender as HARQ information.
  • the same channel format may be used, or different channel formats may be adopted respectively.
  • the number of bits of the HARQ state value that can be carried in different channel formats may be different.
  • the preset value range may be: an integer greater than or equal to the threshold U and less than or equal to N, where 1 ⁇ U ⁇ N.
  • the value of U may have multiple conditions, for example, U is satisfied.
  • is a summation symbol; As an example, it indicates the number of combinations of k in the N elements.
  • the preset value range may be: an integer greater than or equal to the threshold U 1 and less than or equal to U 2 , where 1 ⁇ U 1 ⁇ U 2 ⁇ N.
  • the values of U 1 and U 2 may have multiple conditions, for example, U 1 and U 2 are satisfied.
  • the preset value range is a threshold set, where each element h in H satisfies 1 ⁇ h ⁇ N.
  • the element h in H is satisfied Positive integer.
  • a, b, and c may be determined according to the following conditions: in the N transport blocks, when the probability of correctly receiving k or more than one transport block is greater than a preset probability, the corresponding values of a, b, and c are .
  • M is equal to W; in a case where the bit length of the fed back HARQ information is a non-determined value , M is equal to the maximum value of W.
  • the preset value range, the correspondence between all the values of the first HARQ state value and the receiving condition of the N transport blocks, and the correspondence between all the values of the second HARQ state value and the receiving conditions of the N transport blocks Pre-configured at the transmitting end of the transport block and the receiving end of the transport block.
  • the correspondence between the preset value range, the correspondence between all the values of the first HARQ state value and the reception condition of the N transport blocks, and the correspondence between all the values of the second HARQ state value and the reception condition of the N transport blocks are sent by The terminal negotiates with the receiving end to determine.
  • the sender sets the preset value range, the correspondence between all values of the first HARQ state value and the reception condition of the N transport blocks, and all the values of the second HARQ state value and the reception condition of the N transport blocks.
  • the corresponding relationship is notified to the receiving end, or the receiving end sets the preset value range, the correspondence between all the values of the first HARQ state value and the receiving condition of the N transport blocks, and all the values of the second HARQ state value and the N.
  • the correspondence between the reception conditions of the transport blocks is notified to the transmitting end.
  • the step S104 may include: determining whether U ⁇ k ⁇ N is established; determining that U ⁇ k ⁇ N In the case of Determining a first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of N transport blocks when U ⁇ k ⁇ N; a determined first HARQ state value is generated.
  • the method may further include: determining, in the case that 0 ⁇ k ⁇ U, the second HARQ state value in the S values, where the second HARQ At least one of the S values of the state value is used to indicate at least two reception conditions of N transport blocks when 0 ⁇ k ⁇ U, and S is an integer.
  • Log 2 (S) ⁇ W generates a determined second HARQ state value; and transmits the second HARQ state value as HARQ information to the transmitting end.
  • step S104 may include: determining whether U 1 ⁇ k ⁇ U 2 is established; determining that U 1 ⁇ In the case of k ⁇ U 2 Determining a first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of N transport blocks when U 1 ⁇ k ⁇ U 2 ; a determined first HARQ state value is generated.
  • the method further includes: determining, in the case of 0 ⁇ k ⁇ U 1 or U 2 ⁇ k ⁇ N, determining the second among the T values HARQ state value, wherein, T value of a second HARQ state value for at least one value representing or U ⁇ N number of at least two of the received transport block when k ⁇ N 0 ⁇ k ⁇ U 1 2, T is an integer, Log 2 (T) ⁇ W; generates a determined second HARQ state value; and transmits the second HARQ state value as HARQ information to the transmitting end.
  • the step S104 may include: determining whether k ⁇ H is established; in the case of determining k ⁇ H, Determining a first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of N transport blocks at k ⁇ H; a determined first HARQ state value is generated.
  • the method may further include: determining The second HARQ state value is determined in the R values, wherein at least one of the R values of the second HARQ state value is used to represent At least two reception cases of N transport blocks, R is an integer, Log 2 (R) ⁇ W; generates a determined second HARQ state value; transmits a second HARQ state value as HARQ information.
  • the foregoing N transport blocks may be located on the same carrier, or may be located on multiple carriers.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions for executing the hybrid automatic repeat request sending method.
  • FIG. 2 is a flowchart of a hybrid automatic repeat request receiving method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:
  • Step S202 Receive a first HARQ state value of length M bits, where each value of all the values of the first HARQ state value is one-to-one corresponding to the N transport blocks when k falls within a preset value range.
  • k is the number of correctly received transport blocks in the received transport block, M, N, k are integers, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N;
  • Step S204 determining, according to the first HARQ state value, a receiving situation of the receiving end for the N transport blocks.
  • the first HARQ state value of the M bit length is used to indicate that one of the N transport blocks is received when the k falls within the preset value range, which solves the problem that the feedback HARQ information occupation overhead is large, and the problem is reduced.
  • the overhead of feeding back HARQ information is used to indicate that one of the N transport blocks is received when the k falls within the preset value range, which solves the problem that the feedback HARQ information occupation overhead is large, and the problem is reduced.
  • the method further includes the following steps: receiving a second HARQ state value of length W bits, where at least one of all values of the second HARQ state value is used to indicate that k does not fall within a preset value At least two reception cases of N transport blocks in the range, 2 ⁇ W ⁇ M; according to the second HARQ state value, the reception status of the N transport blocks by the receiving end is determined.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions for executing the hybrid automatic repeat request receiving method.
  • a hybrid automatic repeat request sending device is also provided, which is used to implement the hybrid automatic repeat request sending method.
  • the description has been omitted and the following refers to the modules involved in the device. Description.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 3 is a schematic structural diagram of a hybrid automatic repeat request sending apparatus according to an embodiment of the present invention.
  • the apparatus includes: a detecting module 32, a first generating module 34, and a first sending module 36, wherein the detecting module
  • the first generation module 34 is coupled to the detection module 32 and configured to generate a first HARQ state value of length M bits according to the reception condition, where the first Each of the values of the HARQ status value takes one One corresponds to a reception condition of N transport blocks when k falls within a preset value range, and k is the number of transport blocks correctly received in the received transport block, M, N, and k are integers, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N; the first sending module 36, coupled to the first generating module 34, is configured to: transmit the first HARQ status value as HARQ information.
  • FIG. 4 is a schematic diagram of an optional structure of a hybrid automatic repeat request sending apparatus according to an embodiment of the present invention.
  • the first generating module 34 may further include: a determining unit 342, configured to: determine k Whether it falls within the preset value range; the generating unit 344 is coupled to the determining unit 342, and is configured to: when the determining unit 342 determines that k falls within the preset value range, generates a length of M bits according to the receiving situation. A HARQ status value.
  • FIG. 5 is a schematic diagram of an optional structure of a hybrid automatic repeat request sending apparatus according to an embodiment of the present invention.
  • the apparatus further includes: a second generating module 52 coupled to the determining unit 342, and configured If the determining unit 342 determines that k does not fall within the preset value range, according to the receiving situation, generate a second HARQ state value of length W bits, where all values of the second HARQ state value are At least one value is used to indicate that at least two receiving conditions of the N transport blocks when k does not fall within the preset value range, 2 ⁇ W ⁇ M; the second sending module 54 is coupled to the second generating module 52, and is set. To: Send the second HARQ status value as HARQ information.
  • the first sending module 36 and the second sending module 54 use the same channel format to send the first HARQ state value and the second HARQ state value as the HARQ information; or use different channel formats to transmit as the HARQ.
  • the first HARQ state value and the second HARQ state value of the information use the same channel format to send the first HARQ state value and the second HARQ state value as the HARQ information; or use different channel formats to transmit as the HARQ.
  • the preset value range, the correspondence between all the values of the first HARQ state value and the receiving condition of the N transport blocks, and the correspondence between all the values of the second HARQ state value and the receiving conditions of the N transport blocks Pre-configured at the transmitting end of the transport block and the receiving end of the transport block;
  • the correspondence between the preset value range, the correspondence between all the values of the first HARQ state value and the reception condition of the N transport blocks, and the correspondence between all the values of the second HARQ state value and the reception condition of the N transport blocks are performed by the transmitting end and The receiving end negotiates to determine.
  • the range of predetermined values comprises: greater than or equal to the threshold U and an integer less than or equal to the number N, wherein, 1 ⁇ U ⁇ N; or greater than or equal to a threshold 1 and less than or equal to U U integer of 2, wherein 1 ⁇ U 1 ⁇ U 2 ⁇ N; or a threshold set H, wherein each element h in H satisfies 1 ⁇ h ⁇ N.
  • U is satisfied The integer.
  • U 1 and U 2 are satisfied The integer.
  • the element h in H is satisfied Positive integer.
  • the determining unit 342 is configured to: if the preset value range is an integer greater than or equal to the threshold U and less than or equal to N, determine whether U ⁇ k ⁇ N is established; and the generating unit 344 is configured to: When the judging unit 342 judges that U ⁇ k ⁇ N, Determining a first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of N transport blocks when U ⁇ k ⁇ N; and generates a determined first HARQ state value.
  • the device further includes: a second generating module 52, configured to: when the determining unit 342 determines that 0 ⁇ k ⁇ U, determine a second HARQ state value in the S values, where the second HARQ At least one of the S values of the state value is used to indicate at least two reception conditions of N transport blocks when 0 ⁇ k ⁇ U, and S is an integer.
  • Log 2 (S) ⁇ W; and generating a determined second HARQ state value; the second transmitting module 54 is configured to: transmit a second HARQ state value as HARQ information.
  • the determining unit 342 is configured to: determine, if the preset value range is an integer greater than or equal to the threshold U 1 and less than or equal to U 2 , whether U 1 ⁇ k ⁇ U 2 is established; generating unit 344 Is set to: in the case where the judging unit 342 judges that U 1 ⁇ k ⁇ U 2 , Determining a first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of N transport blocks when U 1 ⁇ k ⁇ U 2 ; and generates a determined first HARQ state value.
  • the apparatus further comprising: a second generation module 52, arranged to: the determination unit 342 determines to 0 ⁇ k ⁇ U 1 or U 2 ⁇ k ⁇ N case, determining a second value of T in the HARQ state value, wherein, T value of a second HARQ state value for at least one value representing ⁇ N th reception of at least two cases 0 ⁇ k ⁇ U 1 or U 2 k ⁇ N transmission block, T As an integer, Log 2 (T) ⁇ W; and generating a determined second HARQ state value; the second transmitting module 54 is configured to: transmit a second HARQ state value as HARQ information.
  • the determination unit 342 determines to 0 ⁇ k ⁇ U 1 or U 2 ⁇ k ⁇ N case, determining a second value of T in the HARQ state value, wherein, T value of a second HARQ state value for at least one value representing ⁇ N th reception of at least two cases 0 ⁇ k ⁇ U 1 or U 2 k ⁇ N transmission block, T
  • the determining unit 342 is configured to: determine whether k ⁇ H is established if the preset value range is the threshold set H; and the generating unit 344 is configured to: determine, by the determining unit 342, that k ⁇ H In the case of Determining a first HARQ state value, where the first HARQ state value is Each of the values takes one-to-one correspondence with a reception condition of N transport blocks at k ⁇ H; and generates a determined first HARQ state value.
  • the device further includes: a second generating module 52, configured to: determine, by the determining unit 342 The second HARQ state value is determined in the R values, wherein at least one of the R values of the second HARQ state value is used to represent At least two reception cases of N transport blocks, R is an integer, Log 2 (R) ⁇ W; and generating a determined second HARQ state value; the second transmitting module 54 is configured to: transmit a second HARQ state value as HARQ information.
  • a second generating module 52 configured to: determine, by the determining unit 342 The second HARQ state value is determined in the R values, wherein at least one of the R values of the second HARQ state value is used to represent At least two reception cases of N transport blocks, R is an integer, Log 2 (R) ⁇ W; and generating a determined second HARQ state value; the second transmitting module 54 is configured to: transmit a second HARQ state value as HARQ information.
  • the N transport blocks are respectively located on multiple carriers.
  • a hybrid automatic repeat request receiving apparatus is further provided for implementing the hybrid automatic repeat request receiving method, which has not been described in detail, and the following refers to the modules involved in the apparatus. Description.
  • FIG. 6 is a schematic structural diagram of a hybrid automatic repeat request receiving apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes: a first receiving module 62 configured to: receive a first HARQ state value having a length of M bits.
  • each of the values of the first HARQ state value is one-to-one corresponding to a reception condition of the N transport blocks when k falls within a preset value range, and k is correct in the received transport block
  • the number of received transport blocks, M, N, and k are integers, 2 ⁇ M ⁇ N, 0 ⁇ k ⁇ N; the first determining module 64 is coupled to the first receiving module 62, and is configured to: according to the first HARQ state value Determine the reception of the N transport blocks at the receiving end.
  • FIG. 7 is a schematic diagram of an optional structure of a hybrid automatic repeat request receiving apparatus according to an embodiment of the present invention.
  • the apparatus further includes: a second receiving module 72 configured to: receive a length W a second HARQ state value of the bit, wherein at least one of all the values of the second HARQ state value is used to indicate that at least two receiving conditions of the N transport blocks when k does not fall within the preset value range, 2 ⁇ W ⁇ M; the second determining module 74 is coupled to the second receiving module 72, and configured to: determine, according to the second HARQ state value, the receiving condition of the receiving end for the N transport blocks.
  • the embodiment of the present invention further provides a node, comprising: the foregoing hybrid automatic repeat request sending device, and/or the hybrid automatic repeat request receiving device.
  • the foregoing nodes may be user terminals or base stations, respectively.
  • the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the application example of the present invention provides a method and an apparatus for transmitting hybrid automatic repeat request information, which aims to reduce the HARQ information overhead and meet the requirement of small impact on system throughput, so as to at least solve the problem of reducing HARQ feedback in the related art.
  • Overhead causes significant problems with system throughput degradation.
  • the number of transport blocks on the basis is Q i .
  • the terminal detect that the correct number of transport blocks is k, where M can be a positive integer not less than 1, and N can be a positive integer not less than 2.
  • Node 1 determines a corresponding HARQ state according to a threshold U, where U is a positive integer and satisfies
  • each reception case is in one-to-one correspondence with one HARQ state (each state is represented by M bits, totaling a total of Case); when k ⁇ U, total The situation with the rest One or more of the states indicates that the HARQ states corresponding to different situations may be the same or different, but at least two cases correspond to the same HARQ state.
  • Node 1 feeds back the selected HARQ state to node 2 based on the detected correct error condition of the transport block (ie, the reception condition).
  • Node 1 determines a corresponding HARQ state based on two thresholds U 1 and U 2 , where U 1 and U 2 ( 1 ⁇ U 1 ⁇ U 2 ⁇ N) are a positive integer and satisfy
  • the thresholds U 1 and U 2 may be agreed by the node 2 and the node 1, for example, the node 2 determines the values of U 1 and U 2 according to the channel state information, the scheduling policy, etc., and the signaling node 1 about U 1 and The value of U 2 , or both parties agree that U 1 and U 2 are equal to a value related to N, for example, it can be specified that U 1 and U 2 are satisfied. And the maximum corresponding value of U 2 -U 1 .
  • each case corresponds to a HARQ state one by one (each state is represented by M bits, totaling a total of Kind of situation). For other situations, total The situation with the rest One or more of the states indicates that the HARQ states corresponding to different situations may be the same or different, but at least two cases correspond to the same HARQ state.
  • Node 1 feeds back the selected HARQ state to node 2 based on the detected correct error condition of the transport block.
  • Node 1 determines a corresponding HARQ state according to two threshold sets H, where each element h in H is a positive integer, 1 ⁇ h ⁇ N, and satisfies
  • the threshold threshold set H and each element thereof may be agreed by the node 2 and the node 1, for example, determined by the node 2 according to channel state information, a scheduling policy, etc., and the node 1 is notified of the value of H by signaling.
  • each case is in one-to-one correspondence with one HARQ state (each state is represented by M bits, totaling a total of Kind of situation). For other situations, total The situation with the rest One or more of the states indicate that the HARQ states corresponding to different situations may be the same or different, but at least two cases correspond to the same HARQ state.
  • Node 1 feeds back the selected HARQ state to node 2 based on the detected correct error condition of the transport block.
  • the HARQ information feedback overhead can be reduced, and the system has little impact on system throughput and is simple to implement.
  • the number of transport blocks on the basis is Q i , Let the terminal detect that the correct number of transport blocks is k, where M is not less than 2 positive integers, N is not less than 3 positive integers, and satisfies:
  • node 1 determines a corresponding HARQ state according to a threshold U, where U is a positive integer and satisfies
  • each case has a one-to-one correspondence with one HARQ state (each state is represented by M bits, totaling a total of Kind of situation).
  • M bits can represent 2 M HARQ states. If they are indexed as 0, 1, ..., r, ..., 2 M -1, the index r can correspond to the HARQ state with the index r, or the index is r.
  • the case and index are HARQ state correspondence of (r+C)MOD(2 M ), etc. (C is a constant), and MOD indicates redundancy.
  • the situation with the rest One or more of the states indicates that the HARQ states corresponding to different situations may be the same or different, but at least two cases correspond to the same HARQ state.
  • the node 1 can represent the HARQ state by W bits, and W is an integer smaller than M and satisfies log 2 (S) ⁇ W.
  • the node 1 selects a channel format for transmitting different HARQ information according to whether k ⁇ U is established.
  • the number of information that the node 1 can select to transmit the HARQ information in the channel format can be at least M bits.
  • the number of information that the node 1 can select to transmit the HARQ information in the channel format is not less than Just fine.
  • the node 1 can select the PUCCH format 3 of the LTE system (the physical uplink control channel format 3, the number of information that can be carried is 21 bits), when k ⁇ U In time, the node 1 may select the PUCCH format 1a of the LTE system ((the physical uplink control channel format 1a, the number of information that can be carried is 1 bit).
  • the PUCCH format 1a of the LTE system ((the physical uplink control channel format 1a, the number of information that can be carried is 1 bit).
  • Different formats have different signal to noise ratios when achieving the same target bit error rate, The signal-to-noise ratio required by PUCCH format 1a is much lower than that of PUCCH format 3. In this way, in addition to the effect of reducing the feedback overhead, when k ⁇ U is established, the effect of saving node 1 power consumption is also achieved.
  • the node 1 feeds back the selected HARQ state to the node 2 according to the detected correct error condition of the transport block.
  • the base station determines, according to the channel state between the base station and the terminal, the probability that a certain transport block is detected correctly, to determine the transport block to determine the coded transmission resource and the corresponding coded modulation mode, and a typical value of p is 0.9.
  • the probability that the correct detection of each transport block is independent of each other, then the probability that the terminal detects the correctness of k transport blocks is Y(k):
  • M the number of bits.
  • the HARQ state value "0" is selected to represent the state, that is, the value "0" represented by a binary number of M bits.
  • the 21 bits can represent a total of 2097152 cases, so the above-mentioned 1149017 cases can be represented by 21 bits without overlapping (for example, corresponding values 0, 1, ... 1149016 respectively).
  • the above 21 bits can also represent up to 948315 (ie, 2097152-1149017).
  • k ⁇ U there are many possible implementation forms based on the application example of the present invention, as long as at least The HARQ status values corresponding to the two cases may be the same.
  • all cases correspond to one HARQ status value, for example, a HARQ status value with a value of 1149018; for example, when 0 ⁇ k ⁇ 2, the HARQ status value corresponding to each case They are different, for example, corresponding to the values 1149018 to 1149546 (of course, these values are not the same as the HARQ state values corresponding to k ⁇ U), and when 3 ⁇ k ⁇ 25, each case corresponds to the same HARQ state value, For example, it corresponds to a HARQ state value of 1149546.
  • the above solution provided by the application example of the present invention can reduce the feedback HARQ information overhead on the one hand, and the feedback overhead can be reduced by more than 30% in the above embodiment.
  • the negative impact of the cost reduction method on the system throughput is small. This is because the method provided by the application example of the present invention does not compress the HARQ information that may occur due to high probability, and the HARQ information is still distorted. For example, the HARQ state that may occur for more than 96% probability is not compressed, but the HARQ state that may occur with less than 4% probability is compressed.
  • node 1 determines a corresponding HARQ state based on two thresholds U 1 and U 2 , where U 1 and U 2 ( 1 ⁇ U 1 ⁇ U 2 ⁇ N) are a positive integer and satisfy
  • the thresholds U 1 and U 2 may be agreed by the node 2 and the node 1, for example, the node 2 determines the values of U 1 and U 2 according to the channel state information, the scheduling policy, etc., and the signaling node 1 about U 1 and The value of U 2 , or both parties agree that U 1 and U 2 are equal to a value related to N, such as: U 1 and U 2 are satisfied. And the maximum corresponding value of U 2 -U 1 .
  • each case corresponds to a HARQ state one by one (each state is represented by M bits, totaling a total of Kind of situation). For other situations, total The situation with the rest One or more of the states indicates that the HARQ states corresponding to different situations may be the same or different, but at least two cases correspond to the same HARQ state.
  • Node 1 feeds back the selected HARQ state to node 2 based on the detected correct error condition of the transport block.
  • the method is applicable to the case that the number of transport blocks actually detected by the node 1 is less than N.
  • the number of transport blocks actually sent to the node 1 by the node 2 is less than N, and the U 1 and U 2 can be made by the agreement.
  • the limited bits represent the HARQ state with a higher probability of actual transmission, thereby minimizing the impact on system throughput due to compression of HARQ information.
  • the feedback overhead can be effectively reduced by a reasonable setting of U 1 and U 2 .
  • the probability that the transport block is detected correctly is p and the probability that each transport block detects correctly is independent of each other.
  • the probability that the terminal detects the correctness of k transport blocks is Y(k):
  • the bit can be used to implement the feedback of the above HARQ information.
  • the HARQ information feedback is performed by the above method. Since the HARQ state with the highest probability of occurrence is not compressed, the effect of the feedback mode on the system throughput due to the compression of the HARQ information is performed. Also greatly reduced.
  • FIG. 9 is a schematic flow chart showing an application example of implementing the present invention. As shown in FIG. 9, the process includes the following steps:
  • Step 1 Node 1 and Node 2 agree to feed back the HARQ information of the N transport blocks with M bits;
  • Step 2 Node 1 and Node 2 agree on threshold parameters
  • Step 3 Node 1 detects the correct HARQ status based on the transport block detection (with M) a value represented by a bit);
  • Step 4 Node 1 feeds back the selected HARQ state to Node 2.
  • Node 1 determines a corresponding HARQ state according to two threshold sets H, where each element h in H is a positive integer (1 ⁇ h ⁇ N) and satisfies
  • the threshold threshold set H and each element thereof may be agreed by the node 2 and the node 1, for example, determined by the node 2 according to channel state information, a scheduling policy, etc., and the node 1 is notified of the value of H by signaling.
  • each case is in one-to-one correspondence with one HARQ state (each state is represented by M bits, totaling a total of Kind of situation). For other situations, total The situation with the rest One or more of the states indicates that the HARQ states corresponding to different situations may be the same or different, but at least two cases correspond to the same HARQ state.
  • a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network of multiple computing devices. Alternatively, they may be implemented by program code executable by a computing device such that they may be stored in a storage device by a computing device and, in some cases, may be executed in a different order than herein.
  • the steps shown or described are either fabricated as integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the application is not limited to any particular combination of hardware and software.
  • the receiving condition of the transport block whose number of correctly received transport blocks in the N transport blocks falls within a preset value range is represented by a first HARQ state value of less than N bits and having a length of M bits. Therefore, the bit length of the HARQ information is reduced to M, which solves the problem that the feedback HARQ information takes up a large overhead, and reduces the overhead of feeding back the HARQ information.

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Abstract

本文公布一种HARQ发送、接收方法、装置及节点。其中,该方法包括:检测对于N个传输块的接收情况;根据接收情况,生成长度为M比特的第一HARQ状态值,其中,第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;发送作为HARQ信息的第一HARQ状态值。

Description

HARQ发送、接收方法、装置及节点 技术领域
本申请涉及但不限于通信领域。
背景技术
为了提高用户的峰值速率及用户体验,节点1(比如终端,或者基站)常常不局限在一个载波、一个进程上接收节点2(比如基站,或者终端)发送的数据。相应的,节点1需要向节点2反馈混合自动重传请求(Hybrid Automatic Repeat Request,简称为HARQ)信息,即:每个载波/进程上传输块的对错,如果检测正确,则反馈肯定应答(Acknowledgement,简称为ACK),否则,反馈否定应答(Negative Acknowledgement,简称为NACK)。
在第三代合作伙伴计划(3rd Generation Partnership Project,简称为3GPP)的长期演进(Long Time Evolution,简称为LTE)系统中,终端(节点1)需要根据基站(节点2)配置的载波数目、每个载波的传输模式进行HARQ信息的反馈,如果载波的传输模式为空间复用模式,例如每个载波有2个传输块,则每个载波需要反馈2比特HARQ信息,否则,每个载波需要反馈1比特HARQ信息(每个载波有1个传输块)。比如网络为终端配置了5个载波,每个载波的传输模式都为空间复用模式,则终端需要在一个上行子帧向网络反馈10比特HARQ信息。
另外,如果上述载波是时分双工(Time Division Duplexing,简称为TDD)载波,终端还需要根据该载波的上下行配置反馈HARQ信息。例如,假设网络为终端配置了一个TDD载波,该载波的上下行配置为配置5,那么,终端需要在一个上行子帧反馈9个下行子帧的HARQ信息(每个子帧1个传输块,共9比特)。再比如,网络为终端配置了2个TDD载波,载波的上下行配置都为配置5,则终端需要在一个上行子帧反馈18个下行子帧的HARQ信息(18比特)。然而,在相关技术中3GPP的载波聚合增强研究项目中,节点2可以为节点1配置多达32个载波,对于频分双工(Frequency Division Duplexing,简称为FDD),非空间复用时,需要反馈的HARQ信息 为32比特,空间复用时需要反馈的HARQ信息比特数目为64,对于TDD,需要反馈的HARQ比特数目和上下行配置信息有关,如果为上下行配置5,则需要反馈的HARQ信息比特多达288。
在相关技术中,出于节省控制信令开销和功率消耗、提高覆盖、降低实现复杂度等原因,节点1常常需要减少向节点2反馈的HARQ信息比特数目,这方面常用的方法有将同预定义的时域上或者空域上多个传输块的HARQ信息进行绑定,比如将同一个载波时域或者空域上2个传输块的HARQ信息进行绑定,如果这两个传输块都检测正确,则反馈1比特ACK,否则反馈1比特NACK,采用这种方式,HARQ反馈的开销可以降低为原来的一半。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
发明人在研究过程中发现,采用相关技术的方式也有很大的局限性,这体现在:
如果上述绑定的传输块中只有1个错误,节点2无法根据节点1反馈的HARQ信息确定上述绑定的传输块中哪一个传输块检测错误,为保险起见则需要对上述绑定的传输块都进行重传,而这种资源浪费对下行系统的吞吐量会带来负面影响。并且,绑定的传输块在信道上有较强的相关性,而通常不同载波的信道是独立的,在上述相关技术中,当节点2在多个载波上向节点1发送数据时,如果仍采用绑定传输块的方法,将多个载波上的传输块的HARQ信息进行绑定,则对系统吞吐量的负面影响将会进一步放大。
本文提供了一种HARQ发送、接收方法、装置及节点。
根据本发明实施例的一个方面,提供了一种混合自动重传请求(HARQ)发送方法,包括:检测对于N个传输块的接收情况;根据所述接收情况,生成长度为M比特的第一HARQ状态值,其中,所述第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时所述N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为 整数,2≤M<N,0≤k≤N;发送作为HARQ信息的所述第一HARQ状态值。
可选地,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值,包括:判断k是否落入所述预设值范围内;在判断到k落入所述预设值范围的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值。
可选地,所述方法还包括:在判断到k未落入所述预设值范围的情况下,根据所述接收情况,生成长度为W比特的第二HARQ状态值,其中,所述第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入所述预设值范围内时所述N个传输块的至少两种接收情况,2≤W≤M;发送作为HARQ信息的所述第二HARQ状态值。
可选地,采用相同的信道格式,发送作为HARQ信息的所述第一HARQ状态值和所述第二HARQ状态值;或者采用不同的信道格式,发送作为HARQ信息的所述第一HARQ状态值和所述第二HARQ状态值。
可选地,所述预设值范围、所述第一HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系预先配置在传输块的发送端和传输块的接收端;或者所述预设值范围、所述第一HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系由所述发送端与所述接收端协商确定。
可选地,所述预设值范围包括:大于或者等于门限U且小于或者等于N的整数,其中,1≤U≤N;或者大于或者等于门限U1且小于或者等于U2的整数,其中,1≤U1≤U2≤N;或者门限集合H,其中,H中的每个元素h都满足1≤h<N。
可选地,U为满足
Figure PCTCN2016079789-appb-000001
的整数;U1和U2为满足
Figure PCTCN2016079789-appb-000002
的整数;H中的元素h为满足
Figure PCTCN2016079789-appb-000003
的正整数。
可选地,U为满足
Figure PCTCN2016079789-appb-000004
的最小整数,或者,U=aN,其中,
Figure PCTCN2016079789-appb-000005
U1和U2为满足
Figure PCTCN2016079789-appb-000006
且U2-U1最大的整数,或者,U1=bN,U2=cN,其中,
Figure PCTCN2016079789-appb-000007
可选地,在所述预设值范围为大于或者等于门限U且小于或者等于N的整数的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值包括:判断U≤k≤N是否成立;在判断到U≤k≤N的情况下,在
Figure PCTCN2016079789-appb-000008
个取值中确定所述第一HARQ状态值,其中,所述第一HARQ状态值的
Figure PCTCN2016079789-appb-000009
个取值中的每个取值一一对应于U≤k≤N时所述N个传输块的一种接收情况;生成确定的所述第一HARQ状态值。
可选地,所述方法还包括:在判断到0≤k<U的情况下,在S个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的S个取值中至少有一个取值用于表示0≤k<U时所述N个传输块的至少两种接收情况,S为整数,
Figure PCTCN2016079789-appb-000010
log2(S)≤W;生成确定的所述第二HARQ状态值;发送作为HARQ信息的所述第二HARQ状态值。
可选地,在所述预设值范围为大于或者等于门限U1且小于或者等于U2的整数的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值包括:判断U1≤k≤U2是否成立;在判断到U1≤k≤U2的情况下,在
Figure PCTCN2016079789-appb-000011
个取值中确定所述第一HARQ状态值,其中,所述第一HARQ状态值的
Figure PCTCN2016079789-appb-000012
个取值中的每个取值一一对应于U1≤k≤U2时所述N个传输块的一种接收情况;生成确定的所述第一HARQ状态值。
可选地,所述方法还包括:在判断到0≤k<U1或者U2<k≤N的情况下,在T个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的T个取值中至少有一个取值用于表示0≤k<U1或者U2<k≤N时所述N个传输块的 至少两种接收情况,T为整数,
Figure PCTCN2016079789-appb-000013
log2(T)≤W;生成确定的所述第二HARQ状态值;发送作为HARQ信息的所述第二HARQ状态值。
可选地,在所述预设值范围为门限集合H的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值包括:判断k∈H是否成立;在判断到k∈H的情况下,在
Figure PCTCN2016079789-appb-000014
个取值中确定所述第一HARQ状态值,其中,所述第一HARQ状态值的
Figure PCTCN2016079789-appb-000015
个取值中的每个取值一一对应于k∈H时所述N个传输块的一种接收情况;生成确定的所述第一HARQ状态值。
可选地,所述方法还包括:在判断到
Figure PCTCN2016079789-appb-000016
的情况下,在R个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的R个取值中至少有一个取值用于表示
Figure PCTCN2016079789-appb-000017
时所述N个传输块的至少两种接收情况,R为整数,
Figure PCTCN2016079789-appb-000018
log2(R)≤W;生成确定的所述第二HARQ状态值;发送作为HARQ信息的所述第二HARQ状态值。
可选地,所述N个传输块分别位于多个载波上。
根据本发明实施例的另一个方面,还提供了一种混合自动重传请求(HARQ)接收方法,包括:接收长度为M比特的第一HARQ状态值,其中,所述第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;根据所述第一HARQ状态值,确定接收端对于所述N个传输块的接收情况。
可选地,所述方法还包括:接收长度为W比特的第二HARQ状态值,其中,所述第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入所述预设值范围内时所述N个传输块的至少两种接收情况,2≤W≤M;根据所述第二HARQ状态值,确定所述接收端对于所述N个传输块的接收情况。
根据本发明实施例的另一个方面,还提供了一种混合自动重传请求(HARQ)发送装置,包括:检测模块,设置为:检测对于N个传输块的接 收情况;第一生成模块,设置为:根据所述接收情况,生成长度为M比特的第一HARQ状态值,其中,所述第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时所述N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;第一发送模块,设置为:发送作为HARQ信息的所述第一HARQ状态值。
可选地,所述第一生成模块,包括:判断单元,设置为:判断k是否落入所述预设值范围内;生成单元,设置为:在所述判断单元判断到k落入所述预设值范围的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值。
可选地,所述装置还包括:第二生成模块,设置为:在所述判断单元判断到k未落入所述预设值范围的情况下,根据所述接收情况,生成长度为W比特的第二HARQ状态值,其中,所述第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入所述预设值范围内时所述N个传输块的至少两种接收情况,2≤W≤M;第二发送模块,设置为:发送作为HARQ信息的所述第二HARQ状态值。
可选地,在所述第一发送模块和所述第二发送模块中,采用相同的信道格式,发送作为HARQ信息的所述第一HARQ状态值和所述第二HARQ状态值;或者采用不同的信道格式,发送作为HARQ信息的所述第一HARQ状态值和所述第二HARQ状态值。
可选地,所述预设值范围、所述第一HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系预先配置在传输块的发送端和传输块的接收端;或者所述预设值范围、所述第一HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系由所述发送端与所述接收端协商确定。
可选地,所述预设值范围包括:大于或者等于门限U且小于或者等于N的整数,其中,1≤U≤N;或者大于或者等于门限U1且小于或者等于U2的整数,其中,1≤U1≤U2≤N;或者门限集合H,其中,H中的每个元素h都满足1≤h<N。
可选地,U为满足
Figure PCTCN2016079789-appb-000019
的整数;U1和U2为满足
Figure PCTCN2016079789-appb-000020
的整数;H中的元素h为满足
Figure PCTCN2016079789-appb-000021
的正整数。
可选地,U为满足
Figure PCTCN2016079789-appb-000022
的最小整数,或者,U=aN,其中,
Figure PCTCN2016079789-appb-000023
U1和U2为满足
Figure PCTCN2016079789-appb-000024
且U2-U1最大的整数,或者,U1=bN,U2=cN,其中,
Figure PCTCN2016079789-appb-000025
可选地,所述判断单元,是设置为:在所述预设值范围为大于或者等于门限U且小于或者等于N的整数的情况下,判断U≤k≤N是否成立;所述生成单元,是设置为:在所述判断单元判断到U≤k≤N的情况下,在
Figure PCTCN2016079789-appb-000026
个取值中确定所述第一HARQ状态值,其中,所述第一HARQ状态值的
Figure PCTCN2016079789-appb-000027
个取值中的每个取值一一对应于U≤k≤N时所述N个传输块的一种接收情况;以及生成确定的所述第一HARQ状态值。
可选地,所述装置还包括:第二生成模块,设置为:在所述判断单元判断到0≤k<U的情况下,在S个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的S个取值中至少有一个取值用于表示0≤k<U时所述N个传输块的至少两种接收情况,S为整数,
Figure PCTCN2016079789-appb-000028
log2(S)≤W;以及生成确定的所述第二HARQ状态值;第二发送模块,设置为:发送作为HARQ信息的所述第二HARQ状态值。
可选地,所述判断单元,是设置为:在所述预设值范围为大于或者等于门限U1且小于或者等于U2的整数的情况下,判断U1≤k≤U2是否成立;所述生成单元,是设置为:在所述判断单元判断到U1≤k≤U2的情况下,在
Figure PCTCN2016079789-appb-000029
个 取值中确定所述第一HARQ状态值,其中,所述第一HARQ状态值的
Figure PCTCN2016079789-appb-000030
个取值中的每个取值一一对应于U1≤k≤U2时所述N个传输块的一种接收情况;以及生成确定的所述第一HARQ状态值。
可选地,所述装置还包括:第二生成模块,设置为:在所述判断单元判断到0≤k<U1或者U2<k≤N的情况下,在T个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的T个取值中至少有一个取值用于表示0≤k<U1或者U2<k≤N时所述N个传输块的至少两种接收情况,T为整数,
Figure PCTCN2016079789-appb-000031
log2(T)≤W;以及生成确定的所述第二HARQ状态值;第二发送模块,设置为:发送作为HARQ信息的所述第二HARQ状态值。
可选地,所述判断单元,是设置为:在所述预设值范围为门限集合H的情况下,判断k∈H是否成立;所述生成单元,是设置为:在所述判断单元判断到k∈H的情况下,在
Figure PCTCN2016079789-appb-000032
个取值中确定所述第一HARQ状态值,其中,所述第一HARQ状态值的
Figure PCTCN2016079789-appb-000033
个取值中的每个取值一一对应于k∈H时所述N个传输块的一种接收情况;以及生成确定的所述第一HARQ状态值。
可选地,所述装置还包括:第二生成模块,设置为:在所述判断单元判断到
Figure PCTCN2016079789-appb-000034
的情况下,在R个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的R个取值中至少有一个取值用于表示
Figure PCTCN2016079789-appb-000035
时所述N个传输块的至少两种接收情况,R为整数,
Figure PCTCN2016079789-appb-000036
log2(R)≤W;以及生成确定的所述第二HARQ状态值;第二发送模块,设置为:发送作为HARQ信息的所述第二HARQ状态值。
可选地,所述N个传输块分别位于多个载波上。
根据本发明实施例的另一个方面,还提供了一种混合自动重传请求(HARQ)接收装置,包括:第一接收模块,设置为:接收长度为M比特的第一HARQ状态值,其中,所述第一HARQ状态值的所有取值中的每个取值 一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;第一确定模块,设置为:根据所述第一HARQ状态值,确定接收端对于所述N个传输块的接收情况。
可选地,所述装置还包括:第二接收模块,设置为:接收长度为W比特的第二HARQ状态值,其中,所述第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入所述预设值范围内时所述N个传输块的至少两种接收情况,2≤W≤M;第二确定模块,设置为:根据所述第二HARQ状态值,确定所述接收端对于所述N个传输块的接收情况。
根据本发明实施例的另一个方面,还提供了一种节点,包括:上述的混合自动重传请求发送装置,和/或,上述的混合自动重传请求接收装置。
根据本发明实施例的另一个方面,还提供了一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令用于执行上述任一项的方法。
通过本发明实施例,采用检测对于N个传输块的接收情况;根据接收情况,生成长度为M比特的第一HARQ状态值,其中,第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;发送作为HARQ信息的第一HARQ状态值的方式,解决了反馈HARQ信息占用开销大的问题,降低了反馈HARQ信息的开销。
在阅读并理解了附图和详细描述后,可以明白其他方面。
附图概述
图1是根据本发明实施例的混合自动重传请求发送方法的流程图;
图2是根据本发明实施例的混合自动重传请求接收方法的流程图;
图3是根据本发明实施例的混合自动重传请求发送装置的结构示意图;
图4是根据本发明实施例的混合自动重传请求发送装置的可选结构示意 图一;
图5是根据本发明实施例的混合自动重传请求发送装置的可选结构示意图二;
图6是根据本发明实施例的混合自动重传请求接收装置的结构示意图;
图7是根据本发明实施例的混合自动重传请求接收装置的可选结构示意图;
图8是根据本发明应用示例的N=32,p=0.9时Y(k)的概率分布示意图;
图9是根据本发明应用示例的混合自动重传请求传输方法的流程图。
本发明的实施方式
下文中将参考附图并结合实施例来详细说明本发明的实施方式。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
为了使本技术领域的人员更好地理解本发明方案,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分的实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本申请保护的范围。
本发明实施例提供了一种混合自动重传请求发送方法,图1是根据本发明实施例的混合自动重传请求发送方法的流程图,如图1所示,该流程包括如下步骤:
步骤S102,检测对于N个传输块的接收情况;
步骤S104,根据接收情况,生成长度为M比特的第一HARQ状态值,其中,第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;
步骤S106,发送作为HARQ信息的第一HARQ状态值。
通过上述步骤,对于N个传输块中正确接收的传输块的数目落入预设值范围内的传输块的接收情况采用少于N比特的、长度为M比特第一HARQ状态值进行表示,从而使得HARQ信息的比特长度减少为M,解决了反馈HARQ信息占用开销大的问题,降低了反馈HARQ信息的开销。
其中,节点1与节点2约定用M比特对N个传输块的HARQ信息进行反馈;上述的对于N个传输块的接收情况包括:对于给定的N个传输块,按照传输块的索引,依次确定每个传输块是否正确接受的情况。假设接收端接收到4个传输块:“传输块1、传输块2、传输块3、传输块4”,接收端可能检测到4个传输块中3个接收正确的接收情况有4种,分别为:“错、对、对、对”,“对、错、对、对”,“对、对、错、对”,“对、对、对、错”。在此需要说明的是,在某些情况下,例如根据某些策略,或者信道状况不佳的情况下,接收端接收的传输块的数目少于N个,那么,对于没有接收到的传输块,可以等同于没有正确接收的方式进行处理,例如上述4个传输块中第三个传输块发送端没有发送,或者接收端没有接收到,而其他传输块都正确接收了,则这种接收情况“对、对、丢失、对”与“对、对、错、对”的接收情况等同对待。
需要说明的是,上述的M可以为预设的定值。
在一些实施例中,可以采用长度为M比特且未表示k落入预设值范围内时N个传输块的任一种接收情况的预定值用来指示k未落入预设值范围内的接收情况;或者,在k未落入预设值范围内的情况下,采用专用消息通知发送端对所有传输块进行重传。
可选地,在步骤S104中可以采用下列方式:判断k是否落入预设值范围内;在判断到k落入预设值范围的情况下,根据接收情况,生成长度为M比特的第一HARQ状态值。
可选地,若采用长度为W比特且未表示k落入预设值范围内时N个传输块的任一种接收情况的预定值用来指示k未落入预设值范围内的接收情况,在上述方法中,在判断k是否落入预设值范围之后,还可以在判断到k未落入预设值范围的情况下,根据接收情况,生成长度为W比特的第二HARQ状态值,其中,第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入预设值范围内时N个传输块的至少两种接收情况,2≤W≤M;将第二HARQ 状态值作为HARQ信息发送至发送端。
可选地,在发送第一HARQ状态值和第二HARQ状态值时,可以采用相同的信道格式,也可以分别采用不同的信道格式。其中,不同的信道格式中可承载的HARQ状态值的比特数可以不同。
可选地,预设值范围可以是:大于或者等于门限U且小于或者等于N的整数,其中,1≤U≤N。
可选地,在上述的预设值范围内,U的取值可以有多种情况,例如,U为满足
Figure PCTCN2016079789-appb-000037
的整数。其中,作为一个可选值,U为满足
Figure PCTCN2016079789-appb-000038
的最小整数,或者,U=aN,其中,
Figure PCTCN2016079789-appb-000039
在本发明的实施例中,∑为求和符号;以
Figure PCTCN2016079789-appb-000040
为例,其表示在N个元素中选取k中组合形式的数目。
可选地,预设值范围可以是:大于或者等于门限U1且小于或者等于U2的整数,其中,1≤U1≤U2≤N。
可选地,在上述的预设值范围内,U1和U2的取值可以有多种情况,例如,U1和U2为满足
Figure PCTCN2016079789-appb-000041
的整数。其中,作为一个可选值,U1和U2为满足
Figure PCTCN2016079789-appb-000042
且使得U2-U1最大的正整数,或者,U1=bN,U2=cN,其中,
Figure PCTCN2016079789-appb-000043
可选地,上述的预设值范围为门限集合,其中,H中的每个元素h都满足1≤h<N。例如,H中的元素h为满足
Figure PCTCN2016079789-appb-000044
的正整数。
可选地,上述的a、b、c可以根据下列条件确定:在N个传输块中,正确接收k个或者k个以上传输块的概率大于预设概率时a、b、c相应的取值。
其中,在反馈的HARQ信息(即第一HARQ状态值或者第二HARQ状态值)的比特长度为定值的情况下,M等于W;在反馈的HARQ信息的比特长度为非定值的情况下,M等于W的最大值。
可选地,预设值范围、第一HARQ状态值的所有取值与N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与N个传输块的接收情况的对应关系预先配置在传输块的发送端和传输块的接收端。
或者,预设值范围、第一HARQ状态值的所有取值与N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与N个传输块的接收情况的对应关系由发送端与接收端协商确定。例如,由发送端将预设值范围、第一HARQ状态值的所有取值与N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与N个传输块的接收情况的对应关系通知给接收端,或者,由接收端将预设值范围、第一HARQ状态值的所有取值与N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与N个传输块的接收情况的对应关系通知给发送端。
可选地,在预设值范围为大于或者等于门限U且小于或者等于N的整数的情况下,在步骤S104中可以包括:判断U≤k≤N是否成立;在判断到U≤k≤N的情况下,在
Figure PCTCN2016079789-appb-000045
个取值中确定第一HARQ状态值,其中,第一HARQ状态值的
Figure PCTCN2016079789-appb-000046
个取值中的每个取值一一对应于U≤k≤N时N个传输块的一种接收情况;生成确定的第一HARQ状态值。
可选地,在判断U≤k≤N是否成立之后,方法还可以包括:在判断到0≤k<U的情况下,在S个取值中确定第二HARQ状态值,其中,第二HARQ状态值的S个取值中至少有一个取值用于表示0≤k<U时N个传输块的至少两种接收情况,S为整数,
Figure PCTCN2016079789-appb-000047
log2(S)≤W;生成确定的第二HARQ状态值;将第二HARQ状态值作为HARQ信息发送至发送端。
可选地,在预设值范围为大于或者等于门限U1且小于或者等于U2的整数的情况下,步骤S104可以包括:判断U1≤k≤U2是否成立;在判断到U1≤k≤U2 的情况下,在
Figure PCTCN2016079789-appb-000048
个取值中确定第一HARQ状态值,其中,第一HARQ状态值的
Figure PCTCN2016079789-appb-000049
个取值中的每个取值一一对应于U1≤k≤U2时N个传输块的一种接收情况;生成确定的第一HARQ状态值。
可选地,在判断U1≤k≤U2是否成立之后,方法还包括:在判断到0≤k<U1或者U2<k≤N的情况下,在T个取值中确定第二HARQ状态值,其中,第二HARQ状态值的T个取值中至少有一个取值用于表示0≤k<U1或者U2<k≤N时N个传输块的至少两种接收情况,T为整数,
Figure PCTCN2016079789-appb-000050
log2(T)≤W;生成确定的第二HARQ状态值;将第二HARQ状态值作为HARQ信息发送至发送端。
可选地,在预设值范围为门限集合H的情况下,在步骤S104中可以包括:判断k∈H是否成立;在判断到k∈H的情况下,在
Figure PCTCN2016079789-appb-000051
个取值中确定第一HARQ状态值,其中,第一HARQ状态值的
Figure PCTCN2016079789-appb-000052
个取值中的每个取值一一对应于k∈H时N个传输块的一种接收情况;生成确定的第一HARQ状态值。
可选地,方法还可以包括:在判断到
Figure PCTCN2016079789-appb-000053
的情况下,在R个取值中确定第二HARQ状态值,其中,第二HARQ状态值的R个取值中至少有一个取值用于表示
Figure PCTCN2016079789-appb-000054
时N个传输块的至少两种接收情况,R为整数,
Figure PCTCN2016079789-appb-000055
log2(R)≤W;生成确定的第二HARQ状态值;发送作为HARQ信息的第二HARQ状态值。
可选地,上述的N个传输块可以位于相同的载波上,也可以分别位于多个载波上。
本发明实施例还提供了一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令用于执行上述混合自动重传请求发送方法。
本实施例还提供了一种混合自动重传请求接收方法。图2是根据本发明实施例的混合自动重传请求接收方法的流程图,如图2所示,该流程包括如下步骤:
步骤S202,接收长度为M比特的第一HARQ状态值,其中,第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;
步骤S204,根据第一HARQ状态值,确定接收端对于N个传输块的接收情况。
通过上述步骤,采用长度为M比特的第一HARQ状态值用于表示k落入预设值范围内时N个传输块的一种接收情况,解决了反馈HARQ信息占用开销大的问题,降低了反馈HARQ信息的开销。
可选地,上述方法还包括下列步骤:接收长度为W比特的第二HARQ状态值,其中,第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入预设值范围内时N个传输块的至少两种接收情况,2≤W≤M;根据第二HARQ状态值,确定接收端对于N个传输块的接收情况。
本发明实施例还提供了一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令用于执行上述混合自动重传请求接收方法。
在本实施例中还提供了一种混合自动重传请求发送装置,用于实现上述混合自动重传请求发送方法,已经进行过说明的不再赘述,下面对该装置中涉及到的模块进行说明。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置可以以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。
图3是根据本发明实施例的混合自动重传请求发送装置的结构示意图,如图3所示,该装置包括:检测模块32、第一生成模块34和第一发送模块36,其中,检测模块32,设置为:检测对于N个传输块的接收情况;第一生成模块34,耦合至检测模块32,设置为:根据接收情况,生成长度为M比特的第一HARQ状态值,其中,第一HARQ状态值的所有取值中的每个取值一 一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;第一发送模块36,耦合至第一生成模块34,设置为:发送作为HARQ信息的第一HARQ状态值。
通过上述模块的综合作用,解决了反馈HARQ信息占用开销大的问题,降低了反馈HARQ信息的开销。
图4是根据本发明实施例的混合自动重传请求发送装置的可选结构示意图一,如图4所示,可选地,第一生成模块34可以包括:判断单元342,设置为:判断k是否落入预设值范围内;生成单元344,耦合至判断单元342,设置为:在判断单元342判断到k落入预设值范围的情况下,根据接收情况,生成长度为M比特的第一HARQ状态值。
图5是根据本发明实施例的混合自动重传请求发送装置的可选结构示意图二,如图5所示,可选地,装置还包括:第二生成模块52,耦合至判断单元342,设置为:在判断单元342判断到k未落入预设值范围的情况下,根据接收情况,生成长度为W比特的第二HARQ状态值,其中,其中,第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入预设值范围内时N个传输块的至少两种接收情况,2≤W≤M;第二发送模块54,耦合至第二生成模块52,设置为:发送作为HARQ信息的第二HARQ状态值。
可选地,第一发送模块36和第二发送模块54中,采用相同的信道格式,发送作为HARQ信息的第一HARQ状态值和第二HARQ状态值;或者采用不同的信道格式,发送作为HARQ信息的第一HARQ状态值和第二HARQ状态值。
可选地,预设值范围、第一HARQ状态值的所有取值与N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与N个传输块的接收情况的对应关系预先配置在传输块的发送端和传输块的接收端;或者
预设值范围、第一HARQ状态值的所有取值与N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与N个传输块的接收情况的对应关系由发送端与接收端协商确定。
可选地,预设值范围包括:大于或者等于门限U且小于或者等于N的整 数,其中,1≤U≤N;或者大于或者等于门限U1且小于或者等于U2的整数,其中,1≤U1≤U2≤N;或者门限集合H,其中,H中的每个元素h都满足1≤h<N。
可选地,U为满足
Figure PCTCN2016079789-appb-000056
的整数。
可选地,U1和U2为满足
Figure PCTCN2016079789-appb-000057
的整数。
可选地,H中的元素h为满足
Figure PCTCN2016079789-appb-000058
的正整数。
可选地,U为满足
Figure PCTCN2016079789-appb-000059
的最小整数;或者,U=aN,其中,
Figure PCTCN2016079789-appb-000060
可选地,U1和U2为满足
Figure PCTCN2016079789-appb-000061
且U2-U1最大的整数;或者,U1=bN,U2=cN,其中,
Figure PCTCN2016079789-appb-000062
可选地,判断单元342,设置为:在预设值范围为大于或者等于门限U且小于或者等于N的整数的情况下,判断U≤k≤N是否成立;生成单元344,设置为:在判断单元342判断到U≤k≤N的情况下,在
Figure PCTCN2016079789-appb-000063
个取值中确定第一HARQ状态值,其中,第一HARQ状态值的
Figure PCTCN2016079789-appb-000064
个取值中的每个取值一一对应于U≤k≤N时N个传输块的一种接收情况;以及生成确定的第一HARQ状态值。
可选地,装置还包括:第二生成模块52,设置为:在判断单元342判断到0≤k<U的情况下,在S个取值中确定第二HARQ状态值,其中,第二HARQ状态值的S个取值中至少有一个取值用于表示0≤k<U时N个传输块的至少两种接收情况,S为整数,
Figure PCTCN2016079789-appb-000065
log2(S)≤W;以及生成确定的 第二HARQ状态值;第二发送模块54,设置为:发送作为HARQ信息的第二HARQ状态值。
可选地,判断单元342,是设置为:在预设值范围为大于或者等于门限U1且小于或者等于U2的整数的情况下,判断U1≤k≤U2是否成立;生成单元344,是设置为:在判断单元342判断到U1≤k≤U2的情况下,在
Figure PCTCN2016079789-appb-000066
个取值中确定第一HARQ状态值,其中,第一HARQ状态值的
Figure PCTCN2016079789-appb-000067
个取值中的每个取值一一对应于U1≤k≤U2时N个传输块的一种接收情况;以及生成确定的第一HARQ状态值。
可选地,装置还包括:第二生成模块52,设置为:在判断单元342判断到0≤k<U1或者U2<k≤N的情况下,在T个取值中确定第二HARQ状态值,其中,第二HARQ状态值的T个取值中至少有一个取值用于表示0≤k<U1或者U2<k≤N时N个传输块的至少两种接收情况,T为整数,
Figure PCTCN2016079789-appb-000068
log2(T)≤W;以及生成确定的第二HARQ状态值;第二发送模块54,设置为:发送作为HARQ信息的第二HARQ状态值。
可选地,判断单元342,是设置为:在预设值范围为门限集合H的情况下,判断k∈H是否成立;生成单元344,是设置为:在判断单元342判断到k∈H的情况下,在
Figure PCTCN2016079789-appb-000069
个取值中确定第一HARQ状态值,其中,第一HARQ状态值的
Figure PCTCN2016079789-appb-000070
个取值中的每个取值一一对应于k∈H时N个传输块的一种接收情况;以及生成确定的第一HARQ状态值。
可选地,装置还包括:第二生成模块52,设置为:在判断单元342判断到
Figure PCTCN2016079789-appb-000071
的情况下,在R个取值中确定第二HARQ状态值,其中,第二HARQ状态值的R个取值中至少有一个取值用于表示
Figure PCTCN2016079789-appb-000072
时N个传输块的至少两种接收情况,R为整数,
Figure PCTCN2016079789-appb-000073
log2(R)≤W;以及生成确定的第二 HARQ状态值;第二发送模块54,设置为:发送作为HARQ信息的第二HARQ状态值。
可选地,N个传输块分别位于多个载波上。
在本实施例中还提供了一种混合自动重传请求接收装置,用于实现上述混合自动重传请求接收方法,已经进行过说明的不再赘述,下面对该装置中涉及到的模块进行说明。
图6是根据本发明实施例的混合自动重传请求接收装置的结构示意图,如图6所示,该装置包括:第一接收模块62,设置为:接收长度为M比特的第一HARQ状态值,其中,第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;第一确定模块64,耦合至第一接收模块62,设置为:根据第一HARQ状态值,确定接收端对于N个传输块的接收情况。
图7是根据本发明实施例的混合自动重传请求接收装置的可选结构示意图,如图7所示,可选地,该装置还包括:第二接收模块72,设置为:接收长度为W比特的第二HARQ状态值,其中,第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入预设值范围内时N个传输块的至少两种接收情况,2≤W≤M;第二确定模块74,耦合至第二接收模块72,设置为:根据第二HARQ状态值,确定接收端对于N个传输块的接收情况。
本发明实施例还提供了一种节点,包括:上述的混合自动重传请求发送装置,和/或,上述的混合自动重传请求接收装置。
可选地,上述节点可以分别为用户终端或者基站。
另外,在本发明实施例中的功能单元可以集成在一个处理单元中,也可以是每个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
为了使本发明实施例的描述更加清楚,下面结合应用示例进行描述和说明。
本发明应用示例提供了一种混合自动重传请求信息的发送方法和装置,其目的在于降低HARQ信息开销、同时满足对系统吞吐量影响小的要求,以至少解决在相关技术中由于降低HARQ反馈开销导致系统吞吐量下降明显的问题。
为实现上述目的,设节点1与节点2约定用M比特对N个传输块的HARQ信息进行反馈,这里的N个传输块可以分别位于I个载波上,载波i(i=1,2…I)上的传输块数目为Qi。设终端检测正确的传输块数目为k,这里M可以为不小于1的正整数,N可以为不小于2的正整数。
可选地,1<M<N;1≤I;Qi≤N;0≤k≤N。
基于上述假设,本发明应用示例的方案描述如下:
方法1:
节点1根据一门限U确定相应的HARQ状态,其中U为一正整数且满足
Figure PCTCN2016079789-appb-000074
其中,门限U可以由节点2和节点1约定,比如,由节点2通过信令通知节点1关于U的取值,或者双方约定U等于一个与N相关的值,比如U=0.7N等。可选的,U为满足
Figure PCTCN2016079789-appb-000075
的最小正整数。
当k≥U时,每种接收情况都和一个HARQ状态一一对应(每个状态用M比特表示,合计共有
Figure PCTCN2016079789-appb-000076
种情况);当k<U时,合计
Figure PCTCN2016079789-appb-000077
情况用剩下的
Figure PCTCN2016079789-appb-000078
个状态中的一个或多个表示,不同情况对应的HARQ状态可以相同或不同,但是至少有2种情况对应的HARQ状态相同。
节点1根据检测的传输块正确错误情况(即接收情况)将选定的上述HARQ状态反馈给节点2。
方法2:
节点1根据两个门限U1和U2确定相应的HARQ状态,其中U1和U2 (1≤U1≤U2<N)为一正整数且满足
Figure PCTCN2016079789-appb-000079
其中,门限U1和U2可以由节点2和节点1约定,比如由节点2根据信道状态信息、调度策略等确定U1和U2的取值,同过信令通知节点1关于U1和U2的取值,或者双方约定U1和U2等于一个与N相关的值,比如可以规定:U1和U2为满足
Figure PCTCN2016079789-appb-000080
且U2-U1的最大对应的值。
当U1≤k≤U2时,每种情况都和一个HARQ状态一一对应(每个状态用M比特表示,合计共有
Figure PCTCN2016079789-appb-000081
种情况)。对于其它情况,合计
Figure PCTCN2016079789-appb-000082
情况用剩下的
Figure PCTCN2016079789-appb-000083
个状态中的一个或多个表示,不同情况对应的HARQ状态可以相同或不同,但是至少有2种情况对应的HARQ状态相同。
节点1根据检测的传输块正确错误情况将选定的上述HARQ状态反馈给节点2。
方法3:
节点1根据两个门限集合H确定相应的HARQ状态,其中H中每个元素h为一正整数,1≤h<N,且满足
Figure PCTCN2016079789-appb-000084
其中,门限门限集合H及其中的每个元素可以由节点2和节点1约定,比如由节点2根据信道状态信息、调度策略等确定,通过信令通知节点1关于H的取值。
当k等于门限门限集合H中某个元素时,每种情况都和一个HARQ状态一一对应(每个状态用M比特表示,合计共有
Figure PCTCN2016079789-appb-000085
种情况)。对于其它情况,合计
Figure PCTCN2016079789-appb-000086
情况用剩下的
Figure PCTCN2016079789-appb-000087
个状态中的一个或多个表示,不同情况对应的HARQ状态可以相同或不同,但是至少有2种情况对应的HARQ 状态相同。
节点1根据检测的传输块正确错误情况将选定的上述HARQ状态反馈给节点2。
通过上述方案之一,均可以降低HARQ信息反馈开销,还具有对系统吞吐量影响小、实现简单等诸多优点。
下面结合附图和原理对上述应用示例进行说明。
应用示例1
终端(节点1)与基站(节点2)约定用M比特对N个传输块的HARQ信息进行反馈,这里的N个传输块可以分别位于I个载波上,载波i(i=1,2…I)上的传输块数目为Qi
Figure PCTCN2016079789-appb-000088
设终端检测正确的传输块数目为k,这里M为不小于2正整数,N为不小于3正整数,且满足:
1<M<N;1≤I,Qi≤N;0≤k≤N。
对于上述检测正确的k个传输块,根据这些传输块所对应的上述N个传输块中的索引,共有
Figure PCTCN2016079789-appb-000089
种情况,考虑到0≤k≤N,合计共有
Figure PCTCN2016079789-appb-000090
种情况。
在本发明应用示例中,节点1根据一门限U确定相应的HARQ状态,其中U为一正整数且满足
Figure PCTCN2016079789-appb-000091
门限U可以由节点2和节点1约定,比如由节点2通过信令通知节点1关于U的取值,或者双方约定U等于一个与N相关的值,比如U=0.7N等,可选的,U等于满足
Figure PCTCN2016079789-appb-000092
最小正整数。
当k≥U时,每种情况都和一个HARQ状态一一对应(每个状态用M比特表示,合计共有
Figure PCTCN2016079789-appb-000093
种情况)。上述每种情况和一个HARQ状态一一对应的方式有多种,比如:可以将上述的
Figure PCTCN2016079789-appb-000094
种情况进行编号,设它们的索引 分别为0,1…..
Figure PCTCN2016079789-appb-000095
而M比特可以表示2M种HARQ状态,设它们索引为0,1,…,r,…,2M-1,则索引为r的情况可以和索引为r的HARQ状态对应,或者索引为r的情况和索引为(r+C)MOD(2M)的HARQ状态对应等(C是一个常数),MOD表示取余。
当k<U时,合计
Figure PCTCN2016079789-appb-000096
情况用剩下的
Figure PCTCN2016079789-appb-000097
个状态中的一个或多个表示,不同情况对应的HARQ状态可以相同或不同,但是至少有2种情况对应的HARQ状态相同。
Figure PCTCN2016079789-appb-000098
等于1时,上述
Figure PCTCN2016079789-appb-000099
情况都对应该相同的HARQ状态。当
Figure PCTCN2016079789-appb-000100
大于1时,至少有2种情况对应的HARQ状态相同。
可选地,设上述合计
Figure PCTCN2016079789-appb-000101
情况用剩下的
Figure PCTCN2016079789-appb-000102
个状态中的S个表示,当
Figure PCTCN2016079789-appb-000103
时(
Figure PCTCN2016079789-appb-000104
表示向上取整),节点1除了用M比特表示上述HARQ状态外,还可以用W比特表示上述HARQ状态,W为一个小于M的整数,且满足log2(S)≤W。
更进一步,节点1根据k≥U是否成立选择不同发送HARQ信息的信道格式。当k≥U成立时,节点1选择发送HARQ信息的信道格式可以承载的信息数目至少为M比特。当k≥U不成立时,节点1可以选择发送HARQ信息的信道格式可以承载的信息数目不小于
Figure PCTCN2016079789-appb-000105
即可。
例如,设M=10,S=2,当k≥U时,节点1可以选用LTE系统的PUCCH format 3(物理上行控制信道格式3,其可以承载的信息数目为21比特),当k<U时,节点1可以选用LTE系统的PUCCH format 1a((物理上行控制信道格式1a,其可以承载的信息数目为1比特)。不同格式在达到相同目标误比特率时所需要的信噪比不同,PUCCH format 1a所需要的信噪比远低于PUCCH format 3。采用这种方式,除了可以实现降低反馈开销的效果外,当k<U成立时,还具有节省节点1功耗的效果。
经过上述处理后,节点1根据检测的传输块正确错误情况将选定的上述HARQ状态反馈给节点2。
应用示例2:
基于上述方法1,设N=32,M=21。通常情况下,基站会根据基站与终端间的信道状态,以某一传输块被检测正确的概率p来确定该传输块确定编码传输资源及相应的编码调制方式,p的一个典型值为0.9。设每个传输块检测正确的概率相互独立,则终端检测到k个传输块正确的概率Y(k)为:
Figure PCTCN2016079789-appb-000106
图8给出了N=32,p=0.9时Y(k)的概率分布示意图。从图8可以看出,终端检测正确传输块数目的概率分布并不是均匀分布,而是大概率的集中分布在少数几个数值上,以图8为例,传输块检测正确的数目集中分布在25~32之间,传输块检测正确的数目分布在0~20的概率几乎可以忽略不计。在本应用示例中,基站和终端约定门限U=26。设终端检测正确的传输块数目为k。比如,当k=32时,即32个传输块全部检测正确,该情况对应32个ACK,在本应用示例中,该情况可以用M比特来表示(这里M=21)。例如,为描述方便,在本应用示例中选择用HARQ状态值“0”来表示该状态,即采用M比特的二进制数表示的值“0”。
当k=31时,即32个传输块中有1个检测错误,共有32种情况,由于k≥U,基于本发明应用示例,这32种情况应该用不同的数值(相当于上述HARQ状态值)来表示,并且不与k等于其它值时的HARQ状态值重叠,比如令这32种情况分别和数值为1~32的HARQ状态值对应。其它k≥U(U=26)的情况可以依次类推,k≥U(U=26)的情况共有
Figure PCTCN2016079789-appb-000107
而21比特共可以表示2097152情况,因此可以用21比特不重叠的表示上述的1149017种情况(比如分别对应数值0,1……1149016)。除了表示上述1149017种情况外,上述21比特还可以最多额外表示948315(即2097152-1149017)种情况,当k<U时,基于本发明应用示例,有多种可能的实现形式,只要满足至少有2种情况对应的HARQ状态值相同即可,比如,令所有情况对应一个HARQ状态值,例如用数值为1149018的HARQ状态值表征;比如,当0≤k≤2 每种情况对应的HARQ状态值都不同,例如分别和数值1149018~1149546对应(当然,这些数值与k≥U时对应的HARQ状态值也不能相同),而当3≤k≤25,每种情况对应一个相同的HARQ状态值,例如和数值为1149546的HARQ状态值对应。
采用本发明应用示例提供的上述方案,相比传统的HARQ信息发送方法,一方面可以降低反馈的HARQ信息开销,以上面实施例为例,反馈开销可以降低30%以上,另外一方面,上述反馈开销降低方法对系统吞吐量的负面影响却很小,这是因为采用本发明应用示例提供的方法,对于高概率可能发生的HARQ接收情况并没有被压缩而导致HARQ信息失真,仍以本应用示例为例,对于超过96%概率可能发生的HARQ状态没有被压缩,只是对不足4%概率可能发生的HARQ状态进行了压缩。
应用示例3
基于上述方法2,终端(节点1)与基站(节点2)约定用M比特对N个传输块的HARQ信息进行反馈。在本应用示例中,节点1根据两个门限U1和U2确定相应的HARQ状态,其中U1和U2(1≤U1≤U2<N)为一正整数且满足
Figure PCTCN2016079789-appb-000108
其中,门限U1和U2可以由节点2和节点1约定,比如由节点2根据信道状态信息、调度策略等确定U1和U2的取值,同过信令通知节点1关于U1和U2的取值,或者双方约定U1和U2等于一个与N相关的值,比如规定:U1和U2为满足
Figure PCTCN2016079789-appb-000109
且U2-U1的最大对应的值。
当U1≤k≤U2时,每种情况都和一个HARQ状态一一对应(每个状态用M比特表示,合计共有
Figure PCTCN2016079789-appb-000110
种情况)。对于其它情况,合计
Figure PCTCN2016079789-appb-000111
情况用剩下的
Figure PCTCN2016079789-appb-000112
个状态中的一个或多个表示,不同情况对应的HARQ状态可以相同或不同,但是至少有2种情况对应的HARQ状态相同。
节点1根据检测的传输块正确错误情况将选定的上述HARQ状态反馈给节点2。
该方法适用于节点1实际检测到的传输块数目小于N的情况,比如节点2出于调度策略等原因,向节点1实际发送的传输块数目小于N,通过约定U1和U2,可以让有限的比特来代表实际发送概率较高的HARQ状态,从而将由于HARQ信息压缩而对系统吞吐量的影响尽量降低。
另外一方面,通过合理的设置约定U1和U2,还可以有效的降低反馈开销。设传输块被检测正确的概率为p且每个传输块检测正确的概率相互独立,如前,则终端检测到k个传输块正确的概率Y(k)为:
Figure PCTCN2016079789-appb-000113
可以发现:当k属于[Np+p-1,Np+p]之间整数时,Y(k)取最大值,因此,令:
U1=min(Np+p-1,Np+p)
U2=max(Np+p-1,Np+p)
则用
Figure PCTCN2016079789-appb-000114
比特即可实现上述HARQ信息的反馈,同时,采用上述方法进行HARQ信息反馈,由于发生概率最高的HARQ状态并没有进行压缩,因此,这种反馈方式对由于HARQ信息压缩而对系统吞吐量的影响也大大降低。
应用示例4
附图9给出了实现本发明应用示例的流程示意图,如图9所示,该流程包括如下步骤:
步骤1:节点1和节点2约定用M比特对N个传输块的HARQ信息进行反馈;
步骤2:节点1和节点2约定门限参数;
步骤3:节点1根据传输块检测正确与否选定反馈的HARQ状态(用M 比特表示的一个值);
步骤4:节点1向节点2反馈选定的HARQ状态。
应用示例5
节点1根据两个门限集合H确定相应的HARQ状态,其中H中每个元素h为一正整数(1≤h<N)且满足
Figure PCTCN2016079789-appb-000115
其中,门限门限集合H及其中的每个元素可以由节点2和节点1约定,比如由节点2根据信道状态信息、调度策略等确定,通过信令通知节点1关于H的取值。
当k等于门限门限集合H中某个元素时,每种情况都和一个HARQ状态一一对应(每个状态用M比特表示,合计共有
Figure PCTCN2016079789-appb-000116
种情况)。对于其它情况,合计
Figure PCTCN2016079789-appb-000117
情况用剩下的
Figure PCTCN2016079789-appb-000118
个状态中的一个或多个表示,不同情况对应的HARQ状态可以相同或不同,但是至少有2种情况对应的HARQ状态相同。
在另外一个实施例中,还提供了一种软件,该软件用于执行上述实施例及可选实施方式中描述的技术方案。
在另外一个实施例中,还提供了一种存储介质,该存储介质中存储有上述软件,该存储介质包括但不限于:光盘、软盘、硬盘、可擦写存储器等。
需要说明的是,本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的对象在适当情况下可以互换,以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
显然,本领域的技术人员应该明白,上述的本发明的模块或步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本申请不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
工业实用性
通过本发明实施例,对于N个传输块中正确接收的传输块的数目落入预设值范围内的传输块的接收情况采用少于N比特的、长度为M比特第一HARQ状态值进行表示,从而使得HARQ信息的比特长度减少为M,解决了反馈HARQ信息占用开销大的问题,降低了反馈HARQ信息的开销。

Claims (23)

  1. 一种混合自动重传请求HARQ发送方法,包括:
    检测对于N个传输块的接收情况;
    根据所述接收情况,生成长度为M比特的第一HARQ状态值,其中,所述第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时所述N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;
    发送作为HARQ信息的所述第一HARQ状态值。
  2. 根据权利要求1所述的方法,其中,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值,包括:
    判断k是否落入所述预设值范围内;
    在判断到k落入所述预设值范围的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值。
  3. 根据权利要求2所述的方法,所述方法还包括:
    在判断到k未落入所述预设值范围的情况下,根据所述接收情况,生成长度为W比特的第二HARQ状态值,其中,所述第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入所述预设值范围内时所述N个传输块的至少两种接收情况,2≤W≤M;
    发送作为HARQ信息的所述第二HARQ状态值。
  4. 根据权利要求3所述的方法,其中,
    采用相同的信道格式,发送作为HARQ信息的所述第一HARQ状态值和所述第二HARQ状态值;或者
    采用不同的信道格式,发送作为HARQ信息的所述第一HARQ状态值和所述第二HARQ状态值。
  5. 根据权利要求3所述的方法,其中,
    所述预设值范围、所述第一HARQ状态值的所有取值与所述N个传 输块的接收情况的对应关系、第二HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系预先配置在传输块的发送端和传输块的接收端;或者
    所述预设值范围、所述第一HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系、第二HARQ状态值的所有取值与所述N个传输块的接收情况的对应关系由所述发送端与所述接收端协商确定。
  6. 根据权利要求1至5中任一项所述的方法,其中,所述预设值范围包括:
    大于或者等于门限U且小于或者等于N的整数,其中,1≤U≤N;或者
    大于或者等于门限U1且小于或者等于U2的整数,其中,1≤U1≤U2≤N;或者
    门限集合H,其中,H中的每个元素h都满足1≤h<N。
  7. 根据权利要求6所述的方法,其中,
    U为满足
    Figure PCTCN2016079789-appb-100001
    的整数;
    U1和U2为满足
    Figure PCTCN2016079789-appb-100002
    的整数;
    H中的元素h为满足
    Figure PCTCN2016079789-appb-100003
    的正整数。
  8. 根据权利要求7所述的方法,其中,
    U为满足
    Figure PCTCN2016079789-appb-100004
    的最小整数,或者,
    U=aN,其中,
    Figure PCTCN2016079789-appb-100005
    U1和U2为满足
    Figure PCTCN2016079789-appb-100006
    且U2-U1最大的整数,或者,
    U1=bN,U2=cN,其中,
    Figure PCTCN2016079789-appb-100007
  9. 根据权利要求6所述的方法,其中,在所述预设值范围为大于或者等于门限U且小于或者等于N的整数的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值包括:
    判断U≤k≤N是否成立;
    在判断到U≤k≤N的情况下,在
    Figure PCTCN2016079789-appb-100008
    个取值中确定所述第一HARQ状态值,其中,所述第一HARQ状态值的
    Figure PCTCN2016079789-appb-100009
    个取值中的每个取值一一对应于U≤k≤N时所述N个传输块的一种接收情况;
    生成确定的所述第一HARQ状态值。
  10. 根据权利要求9所述的方法,所述方法还包括:
    在判断到0≤k<U的情况下,在S个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的S个取值中至少有一个取值用于表示0≤k<U时所述N个传输块的至少两种接收情况,S为整数,
    Figure PCTCN2016079789-appb-100010
    log2(S)≤W;
    生成确定的所述第二HARQ状态值;
    发送作为HARQ信息的所述第二HARQ状态值。
  11. 根据权利要求6所述的方法,其中,在所述预设值范围为大于或者等于门限U1且小于或者等于U2的整数的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值包括:
    判断U1≤k≤U2是否成立;
    在判断到U1≤k≤U2的情况下,在
    Figure PCTCN2016079789-appb-100011
    个取值中确定所述第一HARQ 状态值,其中,所述第一HARQ状态值的
    Figure PCTCN2016079789-appb-100012
    个取值中的每个取值一一对应于U1≤k≤U2时所述N个传输块的一种接收情况;
    生成确定的所述第一HARQ状态值。
  12. 根据权利要求11所述的方法,所述方法还包括:
    在判断到0≤k<U1或者U2<k≤N的情况下,在T个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的T个取值中至少有一个取值用于表示0≤k<U1或者U2<k≤N时所述N个传输块的至少两种接收情况,T为整数,
    Figure PCTCN2016079789-appb-100013
    log2(T)≤W;
    生成确定的所述第二HARQ状态值;
    发送作为HARQ信息的所述第二HARQ状态值。
  13. 根据权利要求6所述的方法,其中,在所述预设值范围为门限集合H的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值包括:
    判断k∈H是否成立;
    在判断到k∈H的情况下,在
    Figure PCTCN2016079789-appb-100014
    个取值中确定所述第一HARQ状态值,其中,所述第一HARQ状态值的
    Figure PCTCN2016079789-appb-100015
    个取值中的每个取值一一对应于k∈H时所述N个传输块的一种接收情况;
    生成确定的所述第一HARQ状态值。
  14. 根据权利要求13所述的方法,所述方法还包括:
    在判断到
    Figure PCTCN2016079789-appb-100016
    的情况下,在R个取值中确定第二HARQ状态值,其中,所述第二HARQ状态值的R个取值中至少有一个取值用于表示
    Figure PCTCN2016079789-appb-100017
    时所述N个传输块的至少两种接收情况,R为整数,
    Figure PCTCN2016079789-appb-100018
    log2(R)≤W;
    生成确定的所述第二HARQ状态值;
    发送作为HARQ信息的所述第二HARQ状态值。
  15. 根据权利要求1所述的方法,其中,所述N个传输块分别位于多个载波上。
  16. 一种混合自动重传请求HARQ接收方法,包括:
    接收长度为M比特的第一HARQ状态值,其中,所述第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;
    根据所述第一HARQ状态值,确定接收端对于所述N个传输块的接收情况。
  17. 根据权利要求16所述的方法,所述方法还包括:
    接收长度为W比特的第二HARQ状态值,其中,所述第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入所述预设值范围内时所述N个传输块的至少两种接收情况,2≤W≤M;
    根据所述第二HARQ状态值,确定所述接收端对于所述N个传输块的接收情况。
  18. 一种混合自动重传请求HARQ发送装置,包括:
    检测模块,设置为:检测对于N个传输块的接收情况;
    第一生成模块,设置为:根据所述接收情况,生成长度为M比特的第一HARQ状态值,其中,所述第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时所述N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;
    第一发送模块,设置为:发送作为HARQ信息的所述第一HARQ状态值。
  19. 根据权利要求18所述的装置,其中,所述第一生成模块,包括:
    判断单元,设置为:判断k是否落入所述预设值范围内;
    生成单元,设置为:在所述判断单元判断到k落入所述预设值范围的情况下,根据所述接收情况,生成长度为M比特的所述第一HARQ状态值。
  20. 根据权利要求19所述的装置,所述装置还包括:
    第二生成模块,设置为:在所述判断单元判断到k未落入所述预设值范围的情况下,根据所述接收情况,生成长度为W比特的第二HARQ状态值,其中,所述第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入所述预设值范围内时所述N个传输块的至少两种接收情况,2≤W≤M;
    第二发送模块,设置为:发送作为HARQ信息的所述第二HARQ状态值。
  21. 一种混合自动重传请求HARQ接收装置,包括:
    第一接收模块,设置为:接收长度为M比特的第一HARQ状态值,其中,所述第一HARQ状态值的所有取值中的每个取值一一对应于k落入预设值范围内时N个传输块的一种接收情况,k为接收到的传输块中正确接收的传输块的数目,M、N、k为整数,2≤M<N,0≤k≤N;
    第一确定模块,设置为:根据所述第一HARQ状态值,确定接收端对于所述N个传输块的接收情况。
  22. 根据权利要求21所述的装置,所述装置还包括:
    第二接收模块,设置为:接收长度为W比特的第二HARQ状态值,其中,所述第二HARQ状态值的所有取值中至少有一个取值用于表示k未落入所述预设值范围内时所述N个传输块的至少两种接收情况,2≤W≤M;
    第二确定模块,设置为:根据所述第二HARQ状态值,确定所述接收端对于所述N个传输块的接收情况。
  23. 一种节点,包括:如权利要求18至20中任一项所述的混合自动重传请求发送装置,和/或,如权利要求21或22所述的混合自动重传请求接收装置。
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