WO2018103014A1 - 混合自动重传请求反馈方法及装置 - Google Patents

混合自动重传请求反馈方法及装置 Download PDF

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Publication number
WO2018103014A1
WO2018103014A1 PCT/CN2016/108893 CN2016108893W WO2018103014A1 WO 2018103014 A1 WO2018103014 A1 WO 2018103014A1 CN 2016108893 W CN2016108893 W CN 2016108893W WO 2018103014 A1 WO2018103014 A1 WO 2018103014A1
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Prior art keywords
information
target data
noise ratio
feedback information
signal
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PCT/CN2016/108893
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English (en)
French (fr)
Inventor
姜玥
朱有团
胡宏杰
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/108893 priority Critical patent/WO2018103014A1/zh
Priority to CN201680091004.2A priority patent/CN109983722B/zh
Priority to EP16923466.3A priority patent/EP3540996B1/en
Publication of WO2018103014A1 publication Critical patent/WO2018103014A1/zh
Priority to US16/432,115 priority patent/US10841048B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/203—Details of error rate determination, e.g. BER, FER or WER
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a hybrid automatic repeat request feedback method and apparatus.
  • Hybrid Automatic Repeat Request (HARQ) feedback methods are widely used in a variety of wireless communication systems, such as Wideband Code Division Multiple Access (WCDMA) systems and Long Term Evolution (LTE). )Wait.
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • the HARQ feedback method can well compensate the influence of time-varying and multipath fading of wireless mobile channels on signal transmission and improve the robustness of the system.
  • the receiving end After receiving the data sent by the transmitting end, the receiving end sequentially performs decoding and Cyclic Redundancy Check (CRC) on the data, and according to the school.
  • CRC Cyclic Redundancy Check
  • the test result sends feedback information to the sender.
  • the feedback information carries an acknowledgement (ACK)
  • ACK acknowledgement
  • NACK negative acknowledgement
  • the receiving end decodes the received data and CRC, and sends the feedback information to the transmitting end, which requires a long transmission time, which cannot be satisfied. Delay business needs.
  • the embodiment of the present invention provides a hybrid automatic retransmission request feedback method and apparatus.
  • the technical solution is as follows:
  • a hybrid automatic repeat request feedback method for a receiving end, the method comprising: receiving data information sent by a transmitting end, the data information includes target data; and the target data in the data information is not verified. Determining a measured value of the target data, the measured value is used to indicate physical channel transmission The reliability of the target data is generated; the feedback information is generated according to the measured value, and the feedback information carries a positive acknowledgement ACK or a negative acknowledgement NACK; and the feedback information is sent to the sender, so that the sender determines whether the target data needs to be retransmitted according to the feedback information.
  • the receiving end can determine the measured value of the target data when the target data in the data information is not verified, and send the feedback information to the sending end according to the measured value, so that the transmitting end can determine whether the target needs to be retransmitted according to the feedback information.
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the transmitting end, so the total time for sending the feedback information is reduced, and the consumed TTI is shorter, so that the low level can be satisfied. Delay business needs.
  • the measured value may be a value of an ACMI of a signal to noise ratio of the physical channel, an information statistic of the data information, a signal to interference and noise ratio of the physical channel, and the like.
  • the receiving end is a base station or user equipment in a wireless communication system.
  • the measured value is a first quality value used to indicate a signal to noise ratio of the physical channel after the data information is equalized, and generating feedback information according to the measured value, including: when the first quality value is less than the quality threshold, generating the carried The feedback information of the NACK is generated when the first quality value is not less than the quality threshold, wherein the quality threshold is determined according to at least one of an encoding manner, a code block length, and a code rate of the target data.
  • the receiving end may determine a quality threshold according to at least one of a coding manner, a code block length, and a code rate of the target data, and perform a non-check determination on the received target data by using the first quality value, so that the receiving end does not need to target the target.
  • the data performs verification processing, and then sends feedback information to the transmitting end. Therefore, the total time for the receiving end to send feedback information is reduced, and the consumed TTI is shorter.
  • the first quality value is an ACMI value
  • the quality threshold is a symbol transmission rate of the target data
  • the measurement value of the target data is determined, including: determining a Bit-Interleaved Coded Modulation (BICM) capacity of the physical channel.
  • BICM Bit-Interleaved Coded Modulation
  • the receiving end can perform non-checking on the received target data by using the symbol transmission rate of the ACMI and the target data, reducing the total time for transmitting the feedback information, and shortening the consumed TTI.
  • the retransmission combining manner of the target data is an additional merge CC mode or an incremental redundancy IR merge mode.
  • the receiving end can determine the value of the corresponding ACMI according to the retransmission combining manner of the target data.
  • the receiving end when the retransmission combining mode of the target data is the CC mode, if the ACMI CC ⁇ R 1 , the receiving end generates the feedback information carrying the NACK, and if the ACMI CC ⁇ R 1 , the receiving end generates the feedback information carrying the ACK.
  • R 1 is the symbol transmission rate of the target data
  • the ACMI CC is the ACMI when the retransmission combining mode of the target data is the CC mode
  • the retransmission combining mode of the target data is the IR combining mode
  • the ACMI IR ⁇ R 1 The receiving end generates the feedback information carrying the NACK.
  • the ACMI CC ⁇ R 1 the receiving end generates the feedback information carrying the ACK, where the ACMI IR is the ACMI when the retransmission combining mode of the target data is the IR combining mode.
  • the measured value is an information statistic of the data information
  • the feedback information is generated according to the measured value, including: determining an information error rate of the target data according to the information statistic; and generating a NACK carrying the NACK when the information error rate is greater than the error rate threshold Feedback information; when the information error rate is not greater than the error rate threshold, generating feedback information carrying the ACK, wherein the error rate threshold is determined according to at least one of a coding mode, a code block length, and a code rate of the target data.
  • the receiving end may determine the error rate threshold according to at least one of the encoding mode, the code block length and the code rate of the target data, and perform non-checking on the received target data by using the information error rate, so that the receiving end does not need to target the target.
  • the data performs verification processing, and then sends feedback information to the transmitting end. Therefore, the total time for the receiving end to send feedback information is reduced, and the consumed TTI is shorter.
  • the information statistic may be an information statistic after the data information is demodulated or a statistic of the information after being decoded.
  • the information error rate may be a codeword error rate or an average bit error rate.
  • the receiving end when the information error rate is a codeword error rate, if P ⁇ >P ⁇ ,t , the receiving end generates feedback information carrying the NACK. If P ⁇ ⁇ P ⁇ , t , the receiving end generates feedback information carrying the ACK.
  • P ⁇ is the codeword error rate
  • P ⁇ , t is the error rate threshold corresponding to the preset codeword error rate
  • the receiving end Generate feedback information carrying NACK.
  • P b ⁇ P b,t the receiving end generates feedback information carrying the ACK.
  • P b is the average bit error rate
  • P b,t is the error rate threshold corresponding to the preset average bit error rate.
  • the measured value is a signal to interference and noise ratio of the physical channel
  • the feedback information is generated according to the measured value, including: when the signal to interference and noise ratio is smaller than the signal to interference and noise ratio threshold, generating feedback information carrying the NACK; when the signal to interference and noise ratio When not less than the signal to interference and noise ratio threshold, feedback information carrying the ACK is generated.
  • the signal to interference and noise ratio threshold is determined according to at least one of a coding mode, a code block length, and a code rate of the target data.
  • the receiving end may determine a signal to interference and noise ratio threshold according to at least one of a coding mode, a code block length, and a code rate of the target data, and perform a non-checking decision on the received target data by using a signal to interference and noise ratio of the physical channel, thereby
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the transmitting end. Therefore, the total time for the receiving end to send feedback information is reduced, and the consumed TTI is shorter.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized
  • the receiving end if the SINR 1 ⁇ Threshold TBS , the receiving end generates feedback information carrying the NACK; if the SINR 1 ⁇ Threshold TBS , the receiving end Generate feedback information carrying an ACK.
  • the SINR 1 is a signal to interference and noise ratio of the physical channel before the data information is equalized
  • the Threshold TBS is a signal to interference and noise ratio threshold corresponding to the signal to interference and noise ratio.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel after the data information is equalized
  • the receiving end if the SINR SC-FDMA ⁇ Threshold TBS , the receiving end generates feedback information carrying the NACK; if the SINR SC-FDMA ⁇ Threshold TBS , the receiving end generates feedback information carrying an ACK.
  • the SINR SC-FDMA is a signal to interference and noise ratio of the physical channel after the data information is equalized
  • the Threshold TBS is a signal to interference and noise ratio threshold corresponding to the signal to interference and noise ratio.
  • the signal to interference and noise ratio threshold may be determined according to a signal to interference and noise ratio, a modulation coding strategy MCS table, and a block error rate BLER curve.
  • the measured value is a signal to interference and noise ratio of the physical channel
  • the feedback information is generated according to the measured value, including: acquiring a transport block size TBS on the physical channel; determining a data transmission rate of the physical channel according to a signal to interference and noise ratio; and when the TBS is smaller than the data At the transmission rate, the feedback information carrying the NACK is generated; when the TBS is not less than the data transmission rate, the feedback information carrying the ACK is generated.
  • the receiving end can perform non-checking determination on the received target data by using the signal to interference and noise ratio of the TBS and the physical channel on the physical channel, so that the receiving end does not need to perform verification processing on the target data, and then sends feedback to the transmitting end. information. Therefore, the total time for the receiving end to send feedback information is reduced, and the consumed TTI is shorter.
  • the signal to interference and noise ratio is a signal to interference and noise ratio of the physical channel before the data information is equalized.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized
  • the receiving end if the TBS ⁇ Rate, the receiving end generates the feedback information carrying the NACK; if the TBS ⁇ Rate, the receiving end generates the ACK with the ACK.
  • Feedback information if the TBS ⁇ Rate, the receiving end generates the ACK with the ACK.
  • the TBS is the transport block size on the physical channel
  • the Rate is the data transmission rate of the physical channel.
  • the hybrid automatic repeat request feedback method in the embodiment of the present invention can shorten the HARQ period, reduce the HARQ process, implement fast HARQ feedback, and achieve the effect of rapidly retransmitting data.
  • the method can increase the number of data retransmissions in a low-latency service scenario, obtain multiple demodulation information, and combine multiple demodulation information to obtain a HARQ gain.
  • the method can also be applied to the iterative detection in the prior art, such as demodulation iteration and decoding iteration in the data transmission process, simplifying the detection process and improving the accuracy of the detection result; and can also be used in the HARQ merging process to simplify The consolidation process improves calibration accuracy.
  • a hybrid automatic repeat request feedback device for a receiving end, where the hybrid automatic repeat request feedback device includes at least one module, and the at least one module is configured to implement the hybrid automatic provided by the first aspect. Retransmit the request feedback method.
  • a hybrid automatic repeat request feedback device for a receiving end, the hybrid automatic repeat request feedback device comprising: at least one processor, a memory, a communication module, at least one communication bus, and a communication antenna.
  • the communication bus is used to implement connection communication between these components.
  • the communication module can be used for remote communication.
  • the communication antenna is used to receive and transmit communication signals.
  • the processor is configured to execute an application stored in the memory, the application comprising the hybrid automatic repeat request feedback method of the first aspect.
  • the receiving end can determine the measured value of the target data when the target data in the data information is not verified, and send the feedback information to the sending end according to the measured value, so that the transmitting end can determine whether the target needs to be retransmitted according to the feedback information.
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the transmitting end, so the total time for sending the feedback information is reduced, and the consumed TTI is shorter, so that the low level can be satisfied. Delay business needs.
  • 1-1 is a schematic diagram of an implementation environment involved in various embodiments of the present invention.
  • FIG. 2 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention
  • 3-1 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention.
  • 3-2 is a flowchart of determining, by a receiving end, a measured value of target data according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a hybrid automatic repeat request feedback device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of still another hybrid automatic repeat request feedback device according to an embodiment of the present invention.
  • FIG. 1-1 shows a schematic diagram of an implementation environment involved in various embodiments of the present application.
  • the implementation environment may include a sender 01 and a receiver 02.
  • the transmitting end 01 and the receiving end 02 use HARQ feedback technology for data transmission.
  • the sender 01 can be a base station (BS), a user equipment (User Equipment, UE), or other devices that support the HARQ feedback technology.
  • the receiving end 02 can be a device supporting the HARQ feedback technology, such as a BS or a UE.
  • the data transmitted in the embodiment of the present invention is data to be transmitted by the physical layer of the device.
  • the embodiment of the present invention does not limit the system of the communication system.
  • the data to be transmitted is processed by the encoding module and the modulation module in sequence, and the processed data is output to the channel estimation module via the channel.
  • the channel estimation module processes the data and outputs the data to the equalization module.
  • the equalization module outputs the data to the demodulation module after performing channel estimation and data compensation.
  • the demodulation module demodulates the data, and then outputs the processed data to the decoding module.
  • the data is output to the CRC module via the decoding module, and the CRC module verifies the data and sends feedback information to the transmitting end.
  • the demodulation module can feed back the processing result to the equalization module and the channel estimation module to complete the demodulation iteration.
  • the decoding module can feed back the processing result to the equalization module and the channel estimation module to complete the decoding iteration.
  • the data processed by the modulation module can also be processed by other modules, and the processed data is then channel-transmitted to the channel estimation module.
  • the target data in the data information may not be verified.
  • the receiving end may generate feedback information (the feedback information carries an ACK or a NACK) according to the measured value, and send the feedback information to the sending end.
  • the sending end further determines, according to the feedback information, whether the target data needs to be retransmitted.
  • the transmitting end determines that the target data has been successfully sent, and can send new data; when the feedback information carries a NACK, the sending end Determine the need to retransmit the target data.
  • the process does not require the receiving end to perform the check processing on the target data, and the consumed Transmission Time Interval (TTI) is shorter, which can meet the requirements of low-latency services.
  • TTI Transmission Time Interval
  • FIG. 2 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention, which may be used in the implementation environment shown in FIG. 1-1. As shown in FIG. 2, the method may include:
  • Step 201 The sending end sends data information to the receiving end.
  • the data information includes target data.
  • the sender may be a UE or a BS.
  • the UE sends the data information to the BS.
  • Step 202 When the target data in the data information is not verified, the receiving end determines the measured value of the target data.
  • the measured value may be a value of Accumulated Conditional Mutual Information (ACMI) of the physical channel signal to noise ratio, an information statistic of the data information, and a signal to interference and noise ratio of the physical channel.
  • ACMI Accumulated Conditional Mutual Information
  • Step 203 The receiving end generates feedback information according to the measured value.
  • the feedback information carries an ACK or a NACK. For example, when the feedback information carries an ACK, it indicates that the target data has been successfully sent, and the sending end can send new data to the receiving end. When the feedback information carries the NACK, it indicates that the transmitting end needs to retransmit the target data.
  • Step 204 The receiving end sends feedback information to the sending end.
  • the receiving end After the receiving end generates feedback information according to the measured value, the receiving end sends the feedback information to the transmitting end.
  • Step 205 The sending end determines, according to the feedback information, whether the target data needs to be retransmitted.
  • the transmitting end can determine whether it is necessary to retransmit the target data according to the feedback information.
  • the hybrid automatic repeat request feedback method determines the measured value of the target data when the target data in the data information is not verified, and sends the measured value according to the measured value.
  • the sending end sends the feedback information, so that the sending end can determine whether the target data needs to be retransmitted according to the feedback information.
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the sending end, so each time The total time for sending feedback information is reduced, and the consumed TTI is shorter, so that low-latency service requirements can be met.
  • FIG. 3-1 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention. This method can be used in the implementation environment shown in Figure 1-1. As shown in Figure 3-1, the method can include:
  • Step 301 The sending end sends data information to the receiving end. Go to step 302.
  • the data information includes target data.
  • the sender may be a UE or a BS.
  • the transmitting end is the UE
  • the receiving end is the BS; when the transmitting end is the BS, the receiving end is the UE.
  • Step 302 When the target data in the data information is not verified, the receiving end determines a measured value of the target data, where the measured value is a first quality value used to indicate a signal to noise ratio of the physical channel after the data information is equalized.
  • the measured value may be a first quality value indicating a signal to noise ratio of the physical channel after the data information is equalized.
  • the first quality value can be a value of ACMI.
  • ACMI is a channel quality information, and the description of ACMI can refer to the prior art.
  • step 302 may include:
  • Step 3021 Determine a BICM capacity of the physical channel.
  • the receiving end may determine the BICM capacity of the physical channel to transmit data according to formula (1):
  • C ⁇ (SNR) is the BICM capacity
  • ⁇ is the modulation constellation
  • SNR is the signal-to-noise ratio of the physical channel
  • L is the number of symbol bits of the target data
  • v is the noise
  • B l (x) is the lth of the symbol x Bit
  • C is the sum of v and x, indicating a signal containing noise.
  • the SNR in the right side of equation (1) equals needs to be estimated, and the remaining variables are known.
  • the specific process of determining the BICM capacity by using the formula (1) and the specific process of estimating the SNR can be referred to the prior art, and the details of the embodiments of the present invention are not described herein again.
  • the maximum logarithmic maximum a posteriori probability (ie, Max-Log-MAP) algorithm may be employed in the formula (1).
  • C ⁇ (SNR) is the BICM capacity
  • ⁇ is the modulation constellation
  • SNR is the signal-to-noise ratio of the physical channel
  • L is the number of symbol bits of the target data
  • v is the noise
  • B l (x) is the lth of the symbol x Bit
  • Step 3022 Determine a value of the ACMI according to a retransmission combining manner of the BICM capacity and the target data.
  • the retransmission combining manner of the target data is an additional merge (ie, CC) mode or an incremental redundancy (IR) merge mode.
  • the value of ACMI can be determined by using formula (3):
  • K is the number of retransmissions of the target data
  • SNR is the signal to noise ratio of the physical channel
  • ⁇ is the modulation constellation
  • the value of ACMI can be determined by using formula (4):
  • K is the number of retransmissions of the target data
  • SNR is the signal to noise ratio of the physical channel
  • ⁇ is the modulation constellation
  • Step 303 When the first quality value is less than the quality threshold, the receiving end generates feedback information that carries the NACK. Go to step 305.
  • the quality threshold is determined according to at least one of a coding manner of the target data, a code block length, and a code rate.
  • the quality threshold can be the symbol transmission rate of the target data.
  • the symbol transmission rate of the target data can be calculated according to the code rate and the number of symbol bits using equation (5):
  • R 1 is the symbol transmission rate target data
  • L is the number of sign bit of object data
  • N a is the number of information bits of object data
  • N c is the target number of data bits is encoded
  • N a / N c is the physical The code rate of the Transport Block Size (TBS) on the channel.
  • TBS Transport Block Size
  • the receiving end when the retransmission combining mode of the target data is the CC mode, if the ACMI CC ⁇ R 1 , the receiving end generates the feedback information carrying the NACK.
  • R 1 is the symbol transmission rate of the target data
  • ACMI CC is the ACMI when the retransmission combining mode of the target data is the CC mode.
  • the receiving end When the retransmission combining mode of the target data is the IR combining mode, if the ACMI IR ⁇ R 1 , the receiving end generates the feedback information carrying the NACK.
  • R 1 is the symbol transmission rate of the target data
  • ACMI IR is the ACMI when the retransmission combining mode of the target data is the IR combining mode.
  • Step 304 When the first quality value is not less than the quality threshold, the receiving end generates feedback information carrying the ACK. Go to step 305.
  • the receiving end when the retransmission combining mode of the target data is the CC mode, if the ACMI CC ⁇ R 1 , the receiving end generates the feedback information carrying the ACK.
  • R 1 is the symbol transmission rate of the target data
  • ACMI CC is the ACMI when the retransmission combining mode of the target data is the CC mode.
  • the receiving end When the retransmission combining mode of the target data is the IR combining mode, if the ACMI IR ⁇ R 1 , the receiving end generates the feedback information carrying the ACK.
  • R 1 is the symbol transmission rate of the target data
  • ACMI IR is the ACMI when the retransmission combining mode of the target data is the IR combining mode.
  • the receiving end when the retransmission combining mode of the target data is the CC mode, if the ⁇ ACMI CC ⁇ R 1 , the receiving end generates the feedback information carrying the NACK. If ⁇ ACMI CC ⁇ R 1 , the receiving end generates feedback information carrying the ACK. Similarly, when the retransmission combining mode of the target data is the IR combining mode, if ⁇ ACMI IR ⁇ R 1 , the receiving end generates feedback information carrying the NACK. If ⁇ ACMI IR ⁇ R 1 , the receiving end generates feedback information carrying the ACK.
  • the size of the adjustment factor ⁇ can be adjusted according to the actual application, the default value of ⁇ is 1, and ⁇ can be slightly less than 1.
  • step 303 and step 304 have no sequence, and steps 303 and 304 are different parallel processing modes. After step 302 is performed, either step 303 is performed or step 304 is performed.
  • Step 305 The receiving end sends feedback information to the sending end. Go to step 306.
  • the feedback information is sent to the sending end, so that the sending end determines whether the target data needs to be retransmitted according to the feedback information.
  • the receiving end when the retransmission combining mode of the target data is the CC mode, if the ACMI CC ⁇ R 1 , the receiving end generates the feedback information carrying the NACK, the receiving end sends the feedback information carrying the NACK to the sending end, and the sending end according to the sending end The NACK in the feedback information determines that the target data needs to be retransmitted to the receiving end.
  • Step 306 The sending end determines, according to the feedback information, whether the target data needs to be retransmitted.
  • the transmitting end determines, according to the feedback information, whether the target data needs to be retransmitted to the receiving end. When the target data needs to be retransmitted, the transmitting end sends the target data to the receiving end again; when the target data does not need to be retransmitted, the transmitting end sends new data to the receiving end.
  • the receiving end performs non-checking judgment on the received target data by using the ACMI, and the receiving end does not need to perform verification processing on the target data, and then sends the feedback information to the transmitting end. Therefore, the total time for the receiving end to send feedback information is reduced, and the consumed TTI is shorter, so that the low-latency service demand can be satisfied.
  • the hybrid automatic repeat request feedback method determines the measured value of the target data when the target data in the data information is not verified, and sends the measured value according to the measured value.
  • the sending end sends the feedback information, so that the sending end can determine whether the target data needs to be retransmitted according to the feedback information.
  • the measured value is ACMI.
  • the receiving end does not need to perform verification processing on the target data, and then sends the target data to the sending end. Feedback information, so the total time for the receiving end to send feedback information is reduced, and the consumed TTI is shorter, so that low-latency service requirements can be met.
  • FIG. 4 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention, which may be used in the implementation environment shown in FIG. 1-1. As shown in FIG. 4, the method may include:
  • Step 401 The sending end sends data information to the receiving end. Go to step 402.
  • the data information includes target data.
  • the sender may be a UE or a BS.
  • the transmitting end is the UE
  • the receiving end is the BS; when the transmitting end is the BS, the receiving end is the UE.
  • Step 402 When the target data in the data information is not verified, the receiving end determines a measured value of the target data, and the measured value is an information statistic of the data information. Go to step 403.
  • the measured value is used to indicate the reliability of the physical channel transmission target data.
  • the measured value can be an information statistic of the data information.
  • the information statistic may be the information statistic (ie, demodulation soft value) after the data information is demodulated, or the information statistic may be the information statistic after the data information is decoded (ie, the decoding soft value).
  • the information statistic is taken as an example for the information statistic after the data information is demodulated.
  • the information statistic after the data information is demodulated is also called the Log-Likelihood Ratio (LLR) demodulation soft value, and the LLR demodulation soft value is expressed by the formula (6):
  • Step 403 The receiving end determines an information error rate of the target data according to the information statistic.
  • the information error rate is a codeword error rate or an average bit error rate.
  • the average bit error rate refers to the average value of all bit error probabilities in one transport block.
  • the receiving end can determine the codeword error rate of the target data by using formula (7):
  • P ⁇ is the codeword error rate
  • Z is the transmitted codeword length, 1 ⁇ k ⁇ Z
  • the soft value is demodulated for the LLR of bit u k .
  • the receiving end can determine the average bit error rate of the target data by using formula (8):
  • P b is the average bit error rate
  • Z is the length of the transmitted codeword, 1 ⁇ k ⁇ Z
  • the soft value is demodulated for the LLR of bit u k .
  • Step 404 When the information error rate is greater than the error rate threshold, the receiving end generates feedback information carrying the NACK. Go to step 406.
  • the error rate threshold may be determined according to at least one of an encoding manner of the target data, a code block length, and a code rate.
  • error rate threshold may also be set according to parameters such as TBS on the physical channel.
  • the receiving end when the information error rate is a codeword error rate, if P ⁇ >P ⁇ ,t , the receiving end generates feedback information carrying the NACK.
  • P ⁇ is the codeword error rate
  • P ⁇ , t is the error rate threshold corresponding to the preset codeword error rate.
  • the receiving end When the information error rate is the average bit error rate, if P b >P b,t , the receiving end generates feedback information carrying the NACK.
  • P b is an average bit error rate
  • P b,t is a threshold corresponding to a preset average bit error rate.
  • Step 405 When the information error rate is not greater than the error rate threshold, the receiving end generates an ACK. Feedback information. Go to step 406.
  • the receiving end When the information error rate is the codeword error rate, if P ⁇ ⁇ P ⁇ , t , the receiving end generates feedback information carrying the ACK.
  • P ⁇ is the codeword error rate
  • P ⁇ , t is the error rate threshold corresponding to the preset codeword error rate.
  • the receiving end When the information error rate is the average bit error rate, if P b ⁇ P b,t , the receiving end generates feedback information carrying the ACK.
  • P b is the average bit error rate
  • P b,t is the error rate threshold corresponding to the preset average bit error rate.
  • step 404 and step 405 have no sequence, and steps 404 and 405 are different parallel processing modes. After step 403 is performed, either step 404 is performed or step 405 is performed.
  • Step 406 The receiving end sends feedback information to the sending end. Go to step 407.
  • the feedback information is sent to the sending end, so that the sending end determines whether the target data needs to be retransmitted according to the feedback information.
  • Example 2 when the code rate of the error word error rate, if P ⁇ ⁇ P ⁇ , t, that carries the feedback information receiving terminal has an ACK, the receiving end carries the feedback information ACK to the transmission side.
  • the transmitting end determines, according to the ACK in the feedback information, that the target data does not need to be retransmitted to the receiving end, but sends new data to the receiving end.
  • Step 407 The sending end determines, according to the feedback information, whether the target data needs to be retransmitted.
  • the transmitting end determines, according to the feedback information, whether the target data needs to be retransmitted to the receiving end. When the target data needs to be retransmitted, the transmitting end sends the target data to the receiving end again; when the target data does not need to be retransmitted, the transmitting end sends new data to the receiving end.
  • the receiving end performs a non-checking decision on the received target data by using an information error rate (such as a codeword error rate or an average bit error rate).
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the transmitting end. Therefore, the total time for the receiving end to send feedback information is reduced, and the consumed TTI is shorter, so that the low-latency service requirement can be satisfied.
  • the hybrid automatic repeat request feedback method determines the measured value of the target data when the target data in the data information is not verified, and sends the measured value according to the measured value.
  • the sending end sends the feedback information, so that the sending end can determine whether the target data needs to be retransmitted according to the feedback information, and the measurement value is an information error rate.
  • the receiving end does not need to perform verification processing on the target data, and then sends the information to the transmitting end.
  • the terminal sends feedback information, so the total time for the receiver to send feedback information is reduced, and the consumed TTI is shorter. Therefore, the low-latency service requirement can be satisfied.
  • FIG. 5 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention, which may be used in the implementation environment shown in FIG. 1-1. As shown in FIG. 5, the method may include:
  • Step 501 The sending end sends data information to the receiving end. Go to step 502.
  • the data information includes target data.
  • the sender may be a UE or a BS.
  • the transmitting end is the UE
  • the receiving end is the BS; when the transmitting end is the BS, the receiving end is the UE.
  • Step 502 When the target data in the data information is not verified, the receiving end determines a measured value of the target data, and the measured value is a signal to interference and noise ratio of the physical channel.
  • the measured value is used to indicate the reliability of the physical channel transmission target data.
  • the measured value may be a signal to interference and noise ratio of the physical channel.
  • the signal to interference and noise ratio may be a signal to interference and noise ratio of the physical channel before the data information is equalized, or the signal to interference and noise ratio may be a signal to interference and noise ratio of the physical channel after the data information is equalized.
  • the receiving end can determine the signal to interference and noise ratio by using equations (9) to (12). Specifically, the channel estimation value is first calculated using equation (9):
  • Nc is the number of subcarriers, 0 ⁇ l ⁇ N C -1, y l is the pilot position symbol in the channel estimation, and ⁇ l is the pilot symbol. Is the conjugate value of the pilot symbol ⁇ l .
  • Nc is the number of subcarriers, 0 ⁇ l ⁇ N C -1, y l is the pilot position symbol in the channel estimation, Estimated for the channel.
  • Nc is the number of subcarriers, 0 ⁇ l ⁇ N C -1, y l is the pilot position symbol in the channel estimation, The noise estimate for the physical channel.
  • formula (12) is used to calculate the signal to interference and noise ratio of the physical channel before the data information is equalized:
  • SINR 1 is the signal to interference and noise ratio of the physical channel before the data information is equalized.
  • the noise estimate for the physical channel For the power estimate of the symbol, The noise estimate for the physical channel.
  • the receiving end can calculate the signal to interference and noise ratio by using equation (13):
  • the SINR SC-FDMA is the signal to interference and noise ratio of the physical channel after the data information is equalized, and ⁇ is the equivalent channel factor of the time domain after the data information is equalized.
  • the receiving end can calculate the signal to interference and noise ratio using equation (14):
  • SINR OFDM is the signal to interference and noise ratio of the physical channel after the data information is equalized
  • ⁇ is the weighting coefficient on the subcarrier used to transmit the data information
  • H is the channel factor on the subcarrier
  • R u is the estimated interference noise. Correlation matrix.
  • Step 503 When the signal to interference and noise ratio is less than the signal to interference and noise ratio threshold, the receiving end generates feedback information carrying the NACK. Go to step 505.
  • the signal to interference and noise ratio threshold is determined according to at least one of a coding mode, a code block length, and a code rate of the target data.
  • the signal to interference and noise ratio threshold may be determined according to a signal to interference and noise ratio, a Modulation and Coding Scheme (MCS) table, and a block error rate (BLER) curve.
  • MCS Modulation and Coding Scheme
  • BLER block error rate
  • an MCS table is usually used to record parameters such as a coding mode and a code rate of the target data.
  • the MCS table corresponds to a plurality of TBSs, each TBS having a BLER curve.
  • the receiving end can set a signal to interference and noise ratio threshold corresponding to the MCS table according to the multiple BLER curves.
  • the signal to interference and noise ratio threshold is the signal to interference and noise ratio (the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized, or the signal to interference and noise ratio of the physical channel after the data information is equalized). Threshold. Regarding the MCS table and the BLER curve, reference can be made to the prior art.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized
  • the SINR 1 is a signal to interference and noise ratio of the physical channel before the data information is equalized
  • the Threshold TBS is a signal to interference and noise ratio threshold corresponding to the signal to interference and noise ratio.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel after the data information is equalized
  • the receiving end if the SINR SC-FDMA ⁇ Threshold TBS , the receiving end generates feedback information carrying the NACK.
  • the SINR SC-FDMA is a signal to interference and noise ratio of the physical channel after the data information is equalized
  • the Threshold TBS is a signal to interference and noise ratio threshold corresponding to the signal to interference and noise ratio.
  • Step 504 When the signal to interference and noise ratio is not less than the signal to interference and noise ratio threshold, the receiving end generates an ACK. Feedback information. Go to step 505.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized
  • the SINR 1 ⁇ Threshold TBS the receiving end generates feedback information carrying the ACK.
  • SINR 1 is the signal to interference and noise ratio of the physical channel before the data information is equalized
  • Threshold TBS is the signal to interference and noise ratio threshold corresponding to the signal to interference and noise ratio.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel after the data information is equalized, taking the SC-FDMA system as an example, if the SINR SC-FDMA ⁇ Threshold TBS , the receiving end generates feedback information carrying the ACK.
  • the SINR SC-FDMA is a signal to interference and noise ratio of the physical channel before the data information is equalized
  • the Threshold TBS is a signal to interference and noise ratio threshold corresponding to the signal to interference and noise ratio.
  • step 503 and step 504 have no sequence, and steps 503 and 504 are different parallel processing modes. After step 502 is performed, either step 503 is performed or step 504 is performed.
  • Step 505 The receiving end sends feedback information to the sending end. Go to step 506.
  • the feedback information is sent to the sending end, so that the sending end determines whether the target data needs to be retransmitted according to the feedback information.
  • the receiving end when the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized, if the SINR 1 ⁇ Threshold TBS , the receiving end generates the feedback information carrying the NACK. The transmitting end determines that the target data needs to be retransmitted to the receiving end according to the NACK in the feedback information.
  • Step 506 The sending end determines, according to the feedback information, whether the target data needs to be retransmitted.
  • the transmitting end determines, according to the feedback information, whether the target data needs to be retransmitted to the receiving end. When the target data needs to be retransmitted, the transmitting end sends the target data to the receiving end again, and when the target data does not need to be retransmitted, the transmitting end sends new data to the receiving end.
  • the receiving end performs a non-checking decision on the received target data by using a signal to interference and noise ratio of the physical channel, where the signal to interference and noise ratio may be a signal to interference and noise ratio of the physical channel before the data information is equalized, or The signal to interference and noise ratio of the physical channel after the data information is equalized.
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the transmitting end. Therefore, the total time for the receiving end to send feedback information is reduced, and the consumed TTI is shorter, so that the low-latency service requirement can be satisfied.
  • the hybrid automatic repeat request feedback method determines the measured value of the target data when the target data in the data information is not verified, and sends the measured value according to the measured value.
  • the sending end sends the feedback information, so that the sending end can determine, according to the feedback information, whether the target data needs to be retransmitted, and the measured value is a signal to interference and noise ratio of the physical channel.
  • the receiving end has no The verification process is performed on the target data, and the feedback information is sent to the sender. Therefore, the total time for sending the feedback information is reduced, and the consumed TTI is shorter, so that the low-latency service requirement can be satisfied.
  • FIG. 6 is a flowchart of a hybrid automatic repeat request feedback method according to an embodiment of the present invention, which may be used in the implementation environment shown in FIG. 1-1. As shown in FIG. 6, the method may include:
  • Step 601 The sending end sends data information to the receiving end. Step 602 is performed.
  • the data information includes target data.
  • the sender may be a UE or a BS.
  • the transmitting end is the UE
  • the receiving end is the BS; when the transmitting end is the BS, the receiving end is the UE.
  • Step 602 When the target data in the data information is not verified, the receiving end determines a measured value of the target data, where the measured value is a signal to interference and noise ratio of the physical channel. Go to step 603.
  • the measured value can be the signal to interference and noise ratio of the physical channel.
  • the signal to interference and noise ratio may be a signal to interference and noise ratio of a physical channel before the data information is equalized, or a signal to interference and noise ratio of the physical channel after the data information is equalized.
  • the receiving end can determine the signal to interference and noise ratio SINR 1 by using the above formulas (9) to (12).
  • the receiving end can calculate the signal to interference and noise ratio by using equation (13).
  • SINR SC-FDMA For an OFDM system, the receiver can calculate the signal to interference and noise ratio SINR OFDM using equation (14).
  • Step 603 The receiving end acquires a TBS on the physical channel. Go to step 604.
  • Step 604 The receiving end determines a data transmission rate of the physical channel according to a signal to interference and noise ratio.
  • the receiving end may determine the data transmission rate of the physical channel by using equation (15).
  • Rate is the data transmission rate of the physical channel
  • T symbol is the time length of the channel estimation module output symbol
  • W is the system bandwidth
  • ⁇ max is the maximum general efficiency
  • the unit of the general efficiency is bits per second per Hz (bit/s /Hz)
  • SINR 1 is the signal-to-interference ratio of the physical channel before the data information is equalized
  • ⁇ is the back-off factor, and both ⁇ max and ⁇ can be freely adjusted.
  • Step 605 When the TBS is smaller than the data transmission rate, the receiving end generates a reverse carrying the NACK. Feed information. Go to step 607.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized
  • the receiving end if the TBS ⁇ Rate, the receiving end generates the feedback information carrying the NACK.
  • the TBS is the transport block size on the physical channel
  • the Rate is the data transmission rate of the physical channel.
  • Step 606 When the TBS is not less than the data transmission rate, the receiving end generates feedback information carrying the ACK. Go to step 607.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized
  • the TBS ⁇ Rate the receiving end generates feedback information carrying the ACK.
  • the TBS is the transport block size on the physical channel
  • the Rate is the data transmission rate of the physical channel.
  • step 605 and step 606 have no sequence, and steps 605 and 606 are different parallel processing modes. After step 604 is performed, either step 605 is performed or step 606 is performed.
  • Step 607 The receiving end sends feedback information to the sending end. Go to step 608.
  • the feedback information is sent to the sending end, so that the sending end determines whether the target data needs to be retransmitted according to the feedback information.
  • the signal to interference and noise ratio is the signal to interference and noise ratio of the physical channel before the data information is equalized
  • the receiving end if the TBS ⁇ Rate, the receiving end generates the feedback information carrying the NACK.
  • the transmitting end determines that the target data needs to be retransmitted to the receiving end according to the NACK in the feedback information.
  • Step 608 The sending end determines, according to the feedback information, whether the target data needs to be retransmitted.
  • the transmitting end determines, according to the feedback information, whether the target data needs to be retransmitted to the receiving end. When the target data needs to be retransmitted, the transmitting end sends the target data to the receiving end again, and when the target data does not need to be retransmitted, the transmitting end sends new data to the receiving end.
  • the receiving end performs a non-checking decision on the received target data by using a signal to interference and noise ratio of the TBS and the physical channel on the physical channel.
  • the signal to interference and noise ratio may be a signal to interference and noise ratio of the physical channel before the data information is equalized, or a signal to interference and noise ratio of the physical channel after the data information is equalized.
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the transmitting end. Therefore, the total time for the receiving end to send the feedback information is reduced, and the consumed TTI is shorter, so that the low-latency service can be satisfied. demand.
  • the hybrid automatic repeat request feedback method determines the measured value of the target data when the target data in the data information is not verified, and sends the measured value according to the measured value.
  • the sending end sends the feedback information, so that the sending end can determine whether the target data needs to be retransmitted according to the feedback information, and the measured value is a signal to interference and noise ratio of the physical channel.
  • the receiving end does not need to perform verification processing on the target data. Then, the feedback information is sent to the sender, so the total time for sending the feedback information is reduced, and the consumed TTI is shorter, so that the low-latency service requirement can be satisfied.
  • the hybrid automatic repeat request feedback method provided by the embodiment of the present invention can be applied to the iterative detection in the prior art, such as demodulation iteration, decoding iteration, etc. in the data transmission process, which simplifies the detection.
  • the process improves the accuracy of the detection result; it can also be used in the HARQ merging process.
  • the HARQ merging refers to the combination of the retransmitted data and the historical data. This method simplifies the merging process and improves the calibration accuracy.
  • Figure 3-1 the embodiment of the present invention does not limit the system of the communication system.
  • the current wireless communication system is expected to adopt a shorter TTI.
  • the length of the TTI used by the 5G system is usually 0.1 milliseconds, and the length of the TTI is the length of the TTI in the LTE system. 1/10.
  • the receiving end needs to perform HARQ feedback quickly.
  • the diversity gain obtained by separately transmitting the demodulated information generated by the same data to be combined.
  • the receiving end After receiving the data sent by the transmitting end, the receiving end sequentially decodes and CRCs the data, and sends feedback information to the sending end according to the verification result.
  • the feedback information carries a NACK, it indicates that the sender needs to retransmit the data, that is, the last data needs to be resent.
  • the receiving end combines the retransmitted data with the historical data (that is, the data sent last time), and then detects the combined data to complete the HARQ feedback.
  • the receiving end completes the CRC, and the time required to send the feedback information to the transmitting end is longer, the consumed TTI is longer, and the HARQ period is longer.
  • the HARQ process (the HARQ process is used to control data transmission) is more likely to be satisfied.
  • the hybrid automatic repeat request feedback method provided by the embodiment of the present invention is a non-CRC based HARQ retransmission mechanism, which can quickly perform HARQ feedback and quickly retransmit data.
  • the method can increase the number of data retransmissions in a low-latency service scenario, obtain multiple demodulation information, and combine multiple demodulation information to obtain a HARQ gain. This method satisfies the low latency business needs.
  • FIG. 7 is a schematic structural diagram of a hybrid automatic repeat request feedback apparatus 700 according to an embodiment of the present invention.
  • This device is used at the receiving end.
  • the device may be implemented as part or all of the receiving end in the implementation environment shown in FIG. 1-1 by software, hardware or a combination of both.
  • the apparatus 700 includes:
  • the receiving module 710 is configured to receive data information sent by the sending end, where the data information includes target data.
  • the determining module 720 is configured to determine, when the target data in the data information is not verified, a measured value of the target data, where the measured value is used to indicate the reliability of the physical channel transmission target data.
  • the generating module 730 is configured to generate feedback information according to the measured value, where the feedback information carries an ACK or a NACK.
  • the sending module 740 is configured to send feedback information to the sending end, so that the sending end determines, according to the feedback information, whether the target data needs to be retransmitted.
  • the measurement value is a first quality value used to indicate a signal to noise ratio of the physical channel after the data information is equalized.
  • the generating module 730 is configured to:
  • the feedback information carrying the ACK is generated.
  • the quality threshold is determined according to at least one of a coding manner of the target data, a code block length, and a code rate.
  • the first quality value may be a value of the ACMI, and the quality threshold may be a symbol transmission rate of the target data.
  • the determining module 720 is configured to:
  • the value of ACMI is determined based on the retransmission combining mode of BICM capacity and target data.
  • the retransmission combining mode of the target data is a CC mode or an IR combining mode.
  • the measured value is an information statistic of the data information
  • a generating module 730 is configured to:
  • the error rate threshold is based on at least one of a coding mode, a code block length, and a code rate of the target data. Ok.
  • the information statistic is an information statistic after the data information is demodulated or a statistic of the information after being decoded.
  • the information error rate is a codeword error rate or an average bit error rate.
  • the measured value is a signal to interference and noise ratio of the physical channel
  • a generating module 730 is configured to:
  • the feedback information carrying the NACK is generated.
  • the signal to interference and noise ratio threshold is determined according to at least one of a coding mode, a code block length, and a code rate of the target data.
  • the signal to interference and noise ratio threshold may determine a signal to interference and noise ratio threshold according to a signal to interference and noise ratio, an MCS table, and a BLER curve.
  • the measured value is a signal to interference and noise ratio of the physical channel
  • a generating module 730 is configured to:
  • the signal to interference and noise ratio is a signal to interference and noise ratio of the physical channel before the data information is equalized.
  • each module in FIG. 7 can be described with reference to the embodiments shown in FIG. 2, FIG. 3-1, FIG. 4, FIG. 5 or FIG.
  • the receiving module 710 is configured to perform step 201 in the foregoing embodiment
  • the determining module 720 is configured to perform step 202 in the foregoing embodiment
  • the generating module 730 is configured to perform step 203 in the foregoing embodiment
  • the sending module 740 is configured to execute the foregoing.
  • the hybrid automatic repeat request feedback device determines the measured value of the target data when the target data in the data information is not verified, and sends the measured value according to the measured value.
  • the sending end sends the feedback information, so that the sending end can determine whether the target data needs to be retransmitted according to the feedback information.
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the sending end, so each time The total time for sending feedback information is reduced, and the consumed TTI is shorter, so that low-latency service requirements can be met.
  • FIG. 8 is a schematic diagram of still another hybrid automatic repeat request feedback device 800 according to an embodiment of the present invention. schematic diagram. The device is used for the receiving end, and the receiving end can be the receiving end in the implementation environment shown in Figure 1-1. It should be understood that the hybrid automatic repeat request feedback device may have more or fewer components than those shown in FIG. 8, two or more components may be combined, or may have different component configurations. The various components shown in Figure 8 may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits. The hybrid automatic repeat request feedback device shown in FIG. 8 will be specifically described as an example. As shown in FIG.
  • the hybrid automatic repeat request feedback device includes at least one processor 801, a memory 802, a communication module 803, at least one communication bus 804, and a communication antenna 805.
  • the hybrid automatic repeat request feedback device also includes other functional components such as a battery module, a wired/wireless charging structure, and the like.
  • Communication bus 804 is used to implement connection communication between these components.
  • Memory 802 may include non-volatile solid state memory and/or dynamic non-volatile storage devices such as flash memory, rotatable disk drives.
  • the communication module 803 can be used for long-distance communication, such as Global System For Mobile Communications (GSM), Code division multiple access (CDMA), General Packet Radio Service (GPRS).
  • GSM Global System For Mobile Communications
  • CDMA Code division multiple access
  • GPRS General Packet Radio Service
  • EDGE Enhanced Data Rate for GSM Evolution
  • 3G technologies such as Wideband Code Division Multiple Access (WCDMA), Time Division-Synchronous Code Division Multiple (Time Division-Synchronous Code Division Multiple) Access, TD-SCDMA), 4G technologies such as LTE, 5G technology, etc.
  • Communication antenna 805 is used to receive and transmit communication signals.
  • the memory 802 includes an operating system 8021 and an application 8022.
  • the operating system 8021 includes various operating system programs for implementing hardware-based operations;
  • the application 8022 includes various applications for implementing various application functions, such as measurement value determination programs and feedback information generation programs for target data. These programs enable the receiving end to determine the measured value of the target data when the target data in the data information is not verified, and generate feedback information based on the measured value.
  • the measurement value is used to indicate the reliability of the physical channel transmission target data, and the feedback information carries an ACK or a NACK.
  • Processor 801 communicates with various modules and components over communication bus 804.
  • the processor 801 can execute an application stored in the memory 802 to implement the receiving end, so that the receiving end implements the hybrid automatic repeat request feedback method described above.
  • the hybrid automatic repeat request feedback device provided by the embodiment of the present invention implements the method embodiment shown in FIG. 2, FIG. 3-1, FIG. 4, FIG. 5 or FIG. 6 by the cooperation of the foregoing various execution modules, and the device shown in FIG. The functions and steps performed by the receiving end in the embodiment.
  • the determining module 720 and the generating module 730 of FIG. 7 as above may be implemented by the processor 801 executing an application stored in the memory 802;
  • the receiving module 710 and the transmitting module 740 of FIG. 7 may be implemented by the communication module 803 and the communication antenna 805.
  • the hybrid automatic repeat request feedback device determines the measured value of the target data when the target data in the data information is not verified, and sends the measured value according to the measured value.
  • the terminal sends the feedback information, so that the sender can determine whether the target data needs to be retransmitted according to the feedback information.
  • the receiving end does not need to perform verification processing on the target data, and then sends feedback information to the transmitting end, so the total time for sending the feedback information is reduced, and the consumed TTI is shorter, so that the low delay can be satisfied. Business needs.
  • hybrid automatic repeat request feedback method and hybrid automatic repeat request feedback device may be implemented in other manners.
  • the hybrid automatic repeat request feedback device embodiment described above is merely illustrative.
  • the division of each module in the hybrid automatic repeat request feedback device is only a logical function division, and the actual implementation may have another The manner of division, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明公开了一种混合自动重传请求反馈方法及装置，属于通信技术领域。该混合自动重传请求反馈方法用于接收端，接收端接收到发送端发送的数据信息后，可以在数据信息中的目标数据未被校验时，确定目标数据的测量值，然后根据测量值生成反馈信息，之后，向发送端发送反馈信息，使得发送端能够根据反馈信息确定是否需要重传目标数据，由于每次发送反馈信息的总时间减少，消耗的TTI更短，所以本发明解决了现有技术无法满足低时延业务需求的问题，能够满足低时延业务需求，用于数据传输。

Description

混合自动重传请求反馈方法及装置 技术领域
本发明涉及通信技术领域，特别涉及一种混合自动重传请求反馈方法及装置。
背景技术
混合自动重传请求(Hybrid Automatic Repeat Request，HARQ)反馈方法广泛应用于多种无线通信系统中，比如宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统和长期演进(Long Term Evolution，LTE)等。HARQ反馈方法能够很好地补偿无线移动信道的时变和多径衰落对信号传输的影响，提高系统的鲁棒性。
现有技术中有一种HARQ反馈方法，通过该方法，接收端在接收到发送端发送的数据后，对该数据依次进行译码和循环冗余校验(Cyclic Redundancy Check，CRC)，并根据校验结果向发送端发送反馈信息。当该反馈信息携带有肯定应答(Acknowledgement，ACK)时，表示数据发送成功，发送端可以发送新的数据；当该反馈信息携带有否定应答(Negative Acknowledgement，NACK)时，表示发送端需要重传数据，即需要重新发送上一次的数据。
发明人在实现本发明的过程中，发现上述方法至少存在如下缺陷：接收端在对接收到的数据进行译码和CRC，并向发送端发送反馈信息需要消耗较长的传输时间，无法满足低时延业务需求。
发明内容
为了解决现有技术无法满足低时延业务需求的问题，本发明实施例提供了一种混合自动重传请求反馈方法及装置。所述技术方案如下：
第一方面，提供了一种混合自动重传请求反馈方法，用于接收端，该方法包括：接收发送端发送的数据信息，数据信息包括目标数据；在数据信息中的目标数据未被校验时，确定目标数据的测量值，该测量值用于指示物理信道传 输目标数据的可靠度；根据测量值生成反馈信息，该反馈信息携带有肯定应答ACK或否定应答NACK；向发送端发送反馈信息，以便于发送端根据该反馈信息确定是否需要重传目标数据。
由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据，相较于现有技术，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
可选的，该测量值可以为物理信道的信噪比的ACMI的值、数据信息的信息统计量及物理信道的信干噪比等等。
可选的，该接收端为无线通信系统中的基站或用户设备。
可选的，测量值为用于指示数据信息被均衡处理后物理信道的信噪比的第一质量值，根据测量值生成反馈信息，包括：当第一质量值小于质量阈值时，生成携带有NACK的反馈信息；当第一质量值不小于质量阈值时，生成携带有ACK的反馈信息，其中，质量阈值根据目标数据的编码方式、码块长度和码率中的至少一个确定。
接收端可以根据目标数据的编码方式、码块长度和码率中的至少一个确定质量阈值，通过第一质量值对接收到的目标数据进行非校验判决，这样一来，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息。所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短。
可选的，第一质量值为ACMI的值，质量阈值为目标数据的符号传输速率，确定目标数据的测量值，包括：确定物理信道的比特交织编码调制(Bit-Interleaved Coded Modulation，BICM)容量；根据BICM容量和目标数据的重传合并方式，确定ACMI的值。
接收端可以采用ACMI和目标数据的符号传输速率对接收到的目标数据进行非校验判决，减少了发送反馈信息的总时间，缩短了消耗的TTI。
可选的，目标数据的重传合并方式为追加合并CC方式或增量冗余IR合并方式。接收端可以根据目标数据的重传合并方式确定相应的ACMI的值。
示例的，当目标数据的重传合并方式为CC方式时，如果ACMICC＜R1，接收端生成携带有NACK的反馈信息，如果ACMICC≥R1，接收端生成携带有ACK的反馈信息。其中，R1为目标数据的符号传输速率，ACMICC为当目标数据的重 传合并方式为CC方式时的ACMI；当目标数据的重传合并方式为IR合并方式时，如果ACMIIR＜R1，接收端生成携带有NACK的反馈信息；如果ACMICC≥R1，接收端生成携带有ACK的反馈信息，其中，ACMIIR为当目标数据的重传合并方式为IR合并方式时的ACMI。
可选的，测量值为数据信息的信息统计量，根据测量值生成反馈信息，包括：根据信息统计量确定目标数据的信息错误率；当信息错误率大于错误率阈值时，生成携带有NACK的反馈信息；当信息错误率不大于错误率阈值时，生成携带有ACK的反馈信息，其中，错误率阈值根据目标数据的编码方式、码块长度和码率中的至少一个确定。
接收端可以根据目标数据的编码方式、码块长度和码率中的至少一个确定错误率阈值，通过信息错误率对接收到的目标数据进行非校验判决，这样一来，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息。所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短。
可选的，信息统计量可以为数据信息被解调处理后的信息统计量或被译码处理后的信息统计量。
可选的，信息错误率可以为码字错误率或平均比特错误率。
示例的，当信息错误率为码字错误率时，如果Pω＞Pω，t，接收端生成携带有NACK的反馈信息。如果Pω≤Pω，t，接收端生成携带有ACK的反馈信息。其中，Pω为码字错误率，Pω，t为预先设置的码字错误率对应的错误率阈值；当信息错误率为平均比特错误率时，如果Pb＞Pb，t，接收端生成携带有NACK的反馈信息。如果Pb≤Pb，t，接收端生成携带有ACK的反馈信息。其中，Pb为平均比特错误率，Pb，t为预先设置的平均比特错误率对应的错误率阈值。
可选的，测量值为物理信道的信干噪比，根据测量值生成反馈信息，包括：当信干噪比小于信干噪比阈值时，生成携带有NACK的反馈信息；当信干噪比不小于信干噪比阈值时，生成携带有ACK的反馈信息。其中，信干噪比阈值根据目标数据的编码方式、码块长度和码率中的至少一个确定。
接收端可以根据目标数据的编码方式、码块长度和码率中的至少一个确定信干噪比阈值，通过物理信道的信干噪比对接收到的目标数据进行非校验判决，这样一来，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息。所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，如 果SINR1＜ThresholdTBS，接收端生成携带有NACK的反馈信息；如果SINR1≥ThresholdTBS，接收端生成携带有ACK的反馈信息。其中，SINR1为数据信息被均衡处理前物理信道的信干噪比，ThresholdTBS为该信干噪比对应的信干噪比阈值。
当信干噪比为数据信息被均衡处理后物理信道的信干噪比时，以SC-FDMA系统为例，如果SINRSC-FDMA＜ThresholdTBS，接收端生成携带有NACK的反馈信息；如果SINRSC-FDMA≥ThresholdTBS，接收端生成携带有ACK的反馈信息。其中，SINRSC-FDMA为数据信息被均衡处理后物理信道的信干噪比，ThresholdTBS为该信干噪比对应的信干噪比阈值。
可选的，信干噪比阈值可以根据信干噪比、调制编码策略MCS表格和误块率BLER曲线确定。
可选的，测量值为物理信道的信干噪比，根据测量值生成反馈信息，包括：获取物理信道上传输块大小TBS；根据信干噪比确定物理信道的数据传输速率；当TBS小于数据传输速率时，生成携带有NACK的反馈信息；当TBS不小于数据传输速率时，生成携带有ACK的反馈信息。
接收端可以通过物理信道上TBS和物理信道的信干噪比，对接收到的目标数据进行非校验判决，这样一来，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息。所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短。
可选的，信干噪比为数据信息被均衡处理前物理信道的信干噪比。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，如果TBS＜Rate，接收端生成携带有NACK的反馈信息；如果TBS≥Rate，接收端生成携带有ACK的反馈信息。其中，TBS为物理信道上传输块大小，Rate为物理信道的数据传输速率。
本发明实施例中的混合自动重传请求反馈方法可以缩短HARQ周期，减少HARQ进程，实现快速执行HARQ反馈，达到快速重传数据的效果。该方法能够在低时延业务场景下增加数据重传次数，获取多次的解调信息，对多次的解调信息进行合并，进而获取HARQ增益。该方法还可以运用于现有技术中的迭代检测中，比如数据传输过程中的解调迭代及译码迭代等，简化检测过程，提高检测结果准确度；也可以用于HARQ合并过程中，简化合并过程，提高校验准确度。
第二方面，提供了一种混合自动重传请求反馈装置，用于接收端，该混合自动重传请求反馈装置包括至少一个模块，该至少一个模块用于实现上述第一方面所提供的混合自动重传请求反馈方法。
第三方面，提供了一种混合自动重传请求反馈装置，用于接收端，该混合自动重传请求反馈装置包括：至少一个处理器、存储器、通讯模块、至少一个通信总线和通讯天线。其中，通信总线用于实现这些组件之间的连接通信。通讯模块可以用于远距通信。通讯天线用于接收和发送通讯信号。处理器用于执行存储器中存储的应用程序，该应用程序包括第一方面所述的混合自动重传请求反馈方法。
上述本发明实施例第二与第三方面所获得的技术效果与第一方面中对应的技术手段所获得的技术效果近似，在这里不再赘述。
综上所述，本发明实施例提供的技术方案带来的有益效果是：
由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据，相较于现有技术，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
附图说明
图1-1是本发明各个实施例所涉及的一种实施环境的示意图；
图1-2是现有技术中数据传输的示意图；
图2是本发明实施例提供的一种混合自动重传请求反馈方法的流程图；
图3-1是本发明实施例提供的一种混合自动重传请求反馈方法的流程图；
图3-2是本发明实施例提供的一种接收端确定目标数据的测量值的流程图；
图4是本发明实施例提供的一种混合自动重传请求反馈方法的流程图；
图5是本发明实施例提供的一种混合自动重传请求反馈方法的流程图；
图6是本发明实施例提供的一种混合自动重传请求反馈方法的流程图；
图7是本发明实施例提供的一种混合自动重传请求反馈装置的结构示意 图；
图8是本发明实施例提供的又一种混合自动重传请求反馈装置的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
请参考图1-1，其示出了本申请各个实施例所涉及的一种实施环境的示意图。该实施环境可以包括发送端01和接收端02。该发送端01和接收端02采用HARQ反馈技术进行数据传输。示例的，该发送端01可以为基站(Base Station，BS)，也可以为用户设备(User Equipment，UE)，还可以为其他支持HARQ反馈技术的设备。该接收端02可以为BS或UE等支持HARQ反馈技术的设备。本发明实施例中传输的数据为设备物理层待传输的数据。本发明实施例对通信系统的制式不做限定。
具体的，如图1-2所示，待传输的数据依次由编码模块和调制模块进行处理，处理后的数据经信道输出至信道估计模块。信道估计模块对数据进行处理，并将数据输出至均衡模块。均衡模块进行信道估计和数据补偿后将数据输出至解调模块。解调模块对数据进行解调处理，再将处理后的数据输出至译码模块。数据经译码模块输出至CRC模块，CRC模块再对数据进行校验，并向发送端发送反馈信息。解调模块可以将处理结果反馈至均衡模块和信道估计模块，完成解调迭代。译码模块可以将处理结果反馈至均衡模块和信道估计模块，完成译码迭代。由调制模块处理的数据还可以由其他模块进行处理，处理后的数据再经过信道传输至信道估计模块。
关于发送端和接收端之间的各个模块的作用可以参考现有技术，本发明实施例对此不再赘述。
在本发明实施例中，接收端(如BS)在接收到发送端(如UE)发送的数据信息(该数据信息包括目标数据)后，可以在数据信息中的目标数据未被校验时，确定该目标数据的测量值。该测量值用于指示物理信道传输目标数据的可靠度。接收端可以根据测量值生成反馈信息(该反馈信息携带有ACK或NACK)，并向发送端发送该反馈信息。发送端再根据该反馈信息确定是否需要重传目标数据。比如，当该反馈信息携带有ACK时，发送端确定该目标数据已发送成功，可以发送新的数据；当该反馈信息携带有NACK时，发送端 确定需要重传目标数据。该过程无需接收端对目标数据执行校验处理，消耗的传输时间间隔(Transmission Time Interval，TTI)更短，能够满足低时延业务需求。
图2是本发明实施例提供的一种混合自动重传请求反馈方法的流程图，该方法可以用于图1-1所示的实施环境。如图2所示，该方法可以包括：
步骤201、发送端向接收端发送数据信息。
该数据信息包括目标数据。该发送端可以为UE，也可以为BS。示例的，当发送端为UE，接收端为BS时，UE向BS发送数据信息。
步骤202、在数据信息中的目标数据未被校验时，接收端确定目标数据的测量值。
该测量值用于指示物理信道传输目标数据的可靠度。示例的，该测量值可以为物理信道信噪比的累计的条件互信息(Accumulated Conditional Mutual Information，ACMI)的值、数据信息的信息统计量及物理信道的信干噪比等等。
步骤203、接收端根据测量值生成反馈信息。
该反馈信息携带有ACK或NACK。比如当反馈信息携带有ACK时，表示目标数据已发送成功，发送端可以向接收端发送新的数据；当反馈信息携带有NACK时，表示发送端需要重传目标数据。
步骤204、接收端向发送端发送反馈信息。
接收端根据测量值生成反馈信息后，将反馈信息发送至发送端。
步骤205、发送端根据反馈信息确定是否需要重传目标数据。
由于反馈信息携带有ACK或NACK，所以发送端能够根据反馈信息确定是否需要重传目标数据。
综上所述，本发明实施例提供的混合自动重传请求反馈方法，由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据，相较于现有技术，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
图3-1是本发明实施例提供的一种混合自动重传请求反馈方法的流程图， 该方法可以用于图1-1所示的实施环境。如图3-1所示，该方法可以包括：
步骤301、发送端向接收端发送数据信息。执行步骤302。
该数据信息包括目标数据。该发送端可以为UE，也可以为BS。当发送端为UE时，接收端为BS；当发送端为BS时，接收端为UE。
步骤302、在数据信息中的目标数据未被校验时，接收端确定目标数据的测量值，该测量值为用于指示数据信息被均衡处理后物理信道的信噪比的第一质量值。
该测量值用于指示物理信道传输目标数据的可靠度。示例的，该测量值可以为用于指示数据信息被均衡处理后物理信道的信噪比的第一质量值。
示例的，该第一质量值可以为ACMI的值。ACMI是一种信道质量信息，关于ACMI的说明可以参考现有技术。
相应的，如图3-2所示，步骤302可以包括：
步骤3021、确定物理信道的BICM容量。
具体的，接收端可以根据公式(1)确定物理信道本次传输数据的BICM容量：
Figure PCTCN2016108893-appb-000001
其中，Cχ(SNR)为BICM容量，χ为调制星座图，SNR为物理信道的信噪比，L为目标数据的符号比特数，v为噪声，Bl(x)为符号x的第l比特，
Figure PCTCN2016108893-appb-000002
为假设的发送符号，
Figure PCTCN2016108893-appb-000003
为符号
Figure PCTCN2016108893-appb-000004
的第l比特，1≤l≤L，C为v和x之和，表示包含噪声的信号。公式(1)等号右边中的SNR需要估算，其余变量是已知的。采用公式(1)确定BICM容量的具体过程以及估算SNR的具体过程可以参考现有技术，本发明实施例在此不再赘述。
进一步的，为了简化计算过程，可以采用最大化对数最大后验概率(即Max-Log-MAP)算法对公式(1)中的
Figure PCTCN2016108893-appb-000005
和
Figure PCTCN2016108893-appb-000006
进行化简：
Figure PCTCN2016108893-appb-000007
Figure PCTCN2016108893-appb-000008
所以，公式(1)可以化简为：
Figure PCTCN2016108893-appb-000009
其中，Cχ(SNR)为BICM容量，χ为调制星座图，SNR为物理信道的信噪比，L为目标数据的符号比特数，v为噪声，Bl(x)为符号x的第l比特，
Figure PCTCN2016108893-appb-000010
为假设的发送符号，
Figure PCTCN2016108893-appb-000011
为符号
Figure PCTCN2016108893-appb-000012
的第l比特，C为v和x之和，表示包含噪声的信号。公式(2)等号右边中的SNR需要估算，其余变量是已知的。关于Max-Log-MAP算法可以参考现有技术。
步骤3022、根据BICM容量和目标数据的重传合并方式，确定ACMI的值。
可选的，目标数据的重传合并方式为追加合并(即CC)方式或增量冗余(Incremental Redundancy，IR)合并方式。当目标数据的重传合并方式为CC方式时，可以采用公式(3)确定ACMI的值：
Figure PCTCN2016108893-appb-000013
其中，K为目标数据的重传次数，1≤k≤K，SNR为物理信道的信噪比，χ为调制星座图。
当目标数据的重传合并方式为IR合并方式时，可以采用公式(4)确定ACMI的值：
Figure PCTCN2016108893-appb-000014
其中，K为目标数据的重传次数，1≤k≤K，SNR为物理信道的信噪比，χ为调制星座图。
步骤303、当第一质量值小于质量阈值时，接收端生成携带有NACK的反馈信息。执行步骤305。
其中，质量阈值根据目标数据的编码方式、码块长度和码率中的至少一个确定。
示例的，质量阈值可以为目标数据的符号传输速率。具体的，可以根据码率和符号比特数，采用公式(5)计算目标数据的符号传输速率：
R1＝L·Na/Nc               (5)
其中，R1为目标数据的符号传输速率，L为目标数据的符号比特数，Na为目标数据的信息比特数，Nc为目标数据被编码后的比特数，Na/Nc为物理信道上传输块大小(Transport Block Size，TBS)的码率。
示例的，当目标数据的重传合并方式为CC方式时，如果ACMICC＜R1，接收端生成携带有NACK的反馈信息。其中，R1为目标数据的符号传输速率，ACMICC为当目标数据的重传合并方式为CC方式时的ACMI。
当目标数据的重传合并方式为IR合并方式时，如果ACMIIR＜R1，接收端生成携带有NACK的反馈信息。其中，R1为目标数据的符号传输速率，ACMIIR为当目标数据的重传合并方式为IR合并方式时的ACMI。
步骤304、当第一质量值不小于质量阈值时，接收端生成携带有ACK的反馈信息。执行步骤305。
示例的，当目标数据的重传合并方式为CC方式时，如果ACMICC≥R1，接收端生成携带有ACK的反馈信息。R1为目标数据的符号传输速率，ACMICC为当目标数据的重传合并方式为CC方式时的ACMI。
当目标数据的重传合并方式为IR合并方式时，如果ACMIIR≥R1，接收端生成携带有ACK的反馈信息。R1为目标数据的符号传输速率，ACMIIR为当目标数据的重传合并方式为IR合并方式时的ACMI。
为了进一步提高判断结果的准确性，在另一种可实施方式中，当目标数据的重传合并方式为CC方式时，如果α·ACMICC＜R1，接收端生成携带有NACK的反馈信息。如果α·ACMICC≥R1，接收端生成携带有ACK的反馈信息。同样的，当目标数据的重传合并方式为IR合并方式时，如果α·ACMIIR＜R1，接收端生成携带有NACK的反馈信息。如果α·ACMIIR≥R1，接收端生成携带有ACK的反馈信息。其中，调整因子α的大小可以根据实际应用来调整，α的默认值为1，α可以略小于1。
需要补充说明的是，步骤303和步骤304无先后顺序，步骤303和步骤304为不同的并列处理方式。在执行了步骤302后，或者执行步骤303，或者执行步骤304。
步骤305、接收端向发送端发送反馈信息。执行步骤306。
接收端生成携带有ACK或NACK的反馈信息之后，将该反馈信息发送至发送端，以便于发送端根据该反馈信息确定是否需要重传目标数据。
示例的，当目标数据的重传合并方式为CC方式时，如果ACMICC＜R1，接收端生成携带有NACK的反馈信息，接收端将携带有NACK的反馈信息发送 至发送端，发送端根据该反馈信息中的NACK确定需要向接收端重传目标数据。
步骤306、发送端根据反馈信息确定是否需要重传目标数据。
发送端根据反馈信息确定是否需要向接收端重传目标数据。当需要重传目标数据时，发送端将该目标数据再次发送至接收端；当不需要重传目标数据时，发送端向接收端发送新的数据。
本发明实施例中，接收端通过ACMI对接收到的目标数据进行非校验判决，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息。所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
综上所述，本发明实施例提供的混合自动重传请求反馈方法，由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据，该测量值为ACMI，相较于现有技术，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
图4是本发明实施例提供的一种混合自动重传请求反馈方法的流程图，该方法可以用于图1-1所示的实施环境。如图4所示，该方法可以包括：
步骤401、发送端向接收端发送数据信息。执行步骤402。
该数据信息包括目标数据。该发送端可以为UE，也可以为BS。当发送端为UE时，接收端为BS；当发送端为BS时，接收端为UE。
步骤402、在数据信息中的目标数据未被校验时，接收端确定目标数据的测量值，该测量值为数据信息的信息统计量。执行步骤403。
测量值用于指示物理信道传输目标数据的可靠度。示例的，该测量值可以为数据信息的信息统计量。
示例的，信息统计量可以为数据信息被解调处理后的信息统计量(即解调软值)，或者，信息统计量可以为数据信息被译码处理后的信息统计量(即译码软值)。
现以该信息统计量为数据信息被解调处理后的信息统计量为例进行说明。数据信息被解调处理后的信息统计量也称作对数似然比(Log-Likelihood Ratio，LLR)解调软值，LLR解调软值采用公式(6)来表示：
Figure PCTCN2016108893-appb-000015
其中，
Figure PCTCN2016108893-appb-000016
为比特uk的LLR解调软值，uk为发送端对目标数据进行编码后得到的比特，P(uk＝+1|y)表示接收端在接收到比特y后接收到的uk＝+1的概率，P(uk＝-1|y)表示接收端在接收到比特y后接收到的uk＝-1的概率。关于公式(6)可以参考现有技术。
步骤403、接收端根据信息统计量确定目标数据的信息错误率。
示例的，信息错误率为码字错误率或平均比特错误率。其中，平均比特错误率指的是一个传输块内所有比特错误概率的平均值。
当信息错误率为码字错误率时，接收端可以采用公式(7)确定目标数据的码字错误率：
Figure PCTCN2016108893-appb-000017
其中，Pω为码字错误率，Z为传输的码字长度，1≤k≤Z，
Figure PCTCN2016108893-appb-000018
为比特uk的LLR解调软值。
当信息错误率为平均比特错误率时，接收端可以采用公式(8)确定目标数据的平均比特错误率：
Figure PCTCN2016108893-appb-000019
其中，Pb为平均比特错误率，Z为传输的码字长度，1≤k≤Z，
Figure PCTCN2016108893-appb-000020
为比特uk的LLR解调软值。
步骤404、当信息错误率大于错误率阈值时，接收端生成携带有NACK的反馈信息。执行步骤406。
其中，错误率阈值可以根据目标数据的编码方式、码块长度和码率中的至少一个确定。
此外，错误率阈值也可以根据物理信道上TBS等参数来设置，具体设置过程可以参考现有技术，在此不再赘述。
示例的，当信息错误率为码字错误率时，如果Pω＞Pω，t，接收端生成携带有NACK的反馈信息。其中，Pω为码字错误率，Pω，t为预先设置的码字错误率对应的错误率阈值。
当信息错误率为平均比特错误率时，如果Pb＞Pb，t，接收端生成携带有NACK的反馈信息。Pb为平均比特错误率，Pb，t为预先设置的平均比特错误率对应的阈值。
步骤405、当信息错误率不大于错误率阈值时，接收端生成携带有ACK 的反馈信息。执行步骤406。
当信息错误率为码字错误率时，如果Pω≤Pω，t，接收端生成携带有ACK的反馈信息。其中，Pω为码字错误率，Pω，t为预先设置的码字错误率对应的错误率阈值。
当信息错误率为平均比特错误率时，如果Pb≤Pb，t，接收端生成携带有ACK的反馈信息。其中，Pb为平均比特错误率，Pb，t为预先设置的平均比特错误率对应的错误率阈值。
需要补充说明的是，步骤404和步骤405无先后顺序，步骤404和步骤405为不同的并列处理方式。在执行了步骤403后，或者执行步骤404，或者执行步骤405。
步骤406、接收端向发送端发送反馈信息。执行步骤407。
接收端生成携带有ACK或NACK的反馈信息之后，将该反馈信息发送至发送端，以便于发送端根据该反馈信息确定是否需要重传目标数据。
示例的，当信息错误率为码字错误率时，如果Pω≤Pω，t，接收端生成携带有ACK的反馈信息，接收端将携带有ACK的反馈信息发送至发送端。发送端根据该反馈信息中的ACK确定不需要向接收端重传目标数据，而是向接收端发送新的数据。
步骤407、发送端根据反馈信息确定是否需要重传目标数据。
发送端根据反馈信息确定是否需要向接收端重传目标数据。当需要重传目标数据时，发送端将该目标数据再次发送至接收端；当不需要重传目标数据时，发送端向接收端发送新的数据。
本发明实施例中，接收端通过信息错误率(如码字错误率或平均比特错误率)对接收到的目标数据进行非校验判决。接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
综上所述，本发明实施例提供的混合自动重传请求反馈方法，由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据，该测量值为信息错误率，相较于现有技术，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
图5是本发明实施例提供的一种混合自动重传请求反馈方法的流程图，该方法可以用于图1-1所示的实施环境。如图5所示，该方法可以包括：
步骤501、发送端向接收端发送数据信息。执行步骤502。
该数据信息包括目标数据。该发送端可以为UE，也可以为BS。当发送端为UE时，接收端为BS；当发送端为BS时，接收端为UE。
步骤502、在数据信息中的目标数据未被校验时，接收端确定目标数据的测量值，该测量值为物理信道的信干噪比。
测量值用于指示物理信道传输目标数据的可靠度。示例的，该测量值可以为物理信道的信干噪比。
示例的，该信干噪比可以为数据信息被均衡处理前物理信道的信干噪比，或者，该信干噪比可以为数据信息被均衡处理后物理信道的信干噪比。
一方面，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，接收端可以采用公式(9)～(12)确定该信干噪比。具体的，先采用公式(9)计算信道估计值：
Figure PCTCN2016108893-appb-000021
其中，
Figure PCTCN2016108893-appb-000022
为信道估计值，Nc为子载波个数，0≤l≤NC-1，yl为信道估计中导频位置符号，αl为导频符号，
Figure PCTCN2016108893-appb-000023
为导频符号αl的共轭值。
再采用公式(10)计算物理信道的噪声估计值：
Figure PCTCN2016108893-appb-000024
其中，
Figure PCTCN2016108893-appb-000025
为物理信道的噪声估计值，Nc为子载波个数，0≤l≤NC-1，yl为信道估计中导频位置符号，
Figure PCTCN2016108893-appb-000026
为信道估计值。
接着采用公式(11)计算信道估计模块输出的符号的功率估计值：
Figure PCTCN2016108893-appb-000027
其中，
Figure PCTCN2016108893-appb-000028
为符号的功率估计值，Nc为子载波个数，0≤l≤NC-1，yl为信道估计中导频位置符号，
Figure PCTCN2016108893-appb-000029
为物理信道的噪声估计值。
最后采用公式(12)计算数据信息被均衡处理前物理信道的信干噪比：
Figure PCTCN2016108893-appb-000030
其中，SINR1为数据信息被均衡处理前物理信道的信干噪比，
Figure PCTCN2016108893-appb-000031
为符号的功率估计值，
Figure PCTCN2016108893-appb-000032
为物理信道的噪声估计值。
另一方面，当信干噪比为数据信息被均衡处理后物理信道的信干噪比时， 示例的，对于单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)系统来说，接收端可以采用公式(13)计算该信干噪比：
Figure PCTCN2016108893-appb-000033
其中，SINRSC-FDMA为数据信息被均衡处理后物理信道的信干噪比，ρ为数据信息被均衡处理后时域的等效信道因子。
示例的，对于正交频分复用技术(Orthogonal Frequency Division Multiplexing，OFDM)系统来说，接收端可以采用公式(14)计算该信干噪比：
Figure PCTCN2016108893-appb-000034
其中，SINROFDM为数据信息被均衡处理后物理信道的信干噪比，ω为用于传输数据信息的子载波上的加权系数，H为子载波上的信道因子，Ru为估计的干扰噪声相关矩阵。
步骤503、当信干噪比小于信干噪比阈值时，接收端生成携带有NACK的反馈信息。执行步骤505。
其中，信干噪比阈值根据目标数据的编码方式、码块长度和码率中的至少一个确定。具体的，可以根据信干噪比、调制编码策略(Modulation and Coding Scheme，MCS)表格和误块率(block error rate，BLER)曲线确定信干噪比阈值。现有技术中，在传输目标数据时，通常采用MCS表格记录目标数据的编码方式和码率等参数。该MCS表格对应多个TBS，每个TBS具有一条BLER曲线。接收端根据多条BLER曲线可以设置与MCS表格对应的信干噪比阈值。该信干噪比阈值即为信干噪比(该信干噪比为数据信息被均衡处理前物理信道的信干噪比，或数据信息被均衡处理后物理信道的信干噪比)对应的门限值。关于MCS表格和BLER曲线可以参考现有技术。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，如果SINR1＜ThresholdTBS，接收端生成携带有NACK的反馈信息。其中，SINR1为数据信息被均衡处理前物理信道的信干噪比，ThresholdTBS为该信干噪比对应的信干噪比阈值。
当信干噪比为数据信息被均衡处理后物理信道的信干噪比时，以SC-FDMA系统为例，如果SINRSC-FDMA＜ThresholdTBS，接收端生成携带有NACK的反馈信息。其中，SINRSC-FDMA为数据信息被均衡处理后物理信道的信干噪比，ThresholdTBS为该信干噪比对应的信干噪比阈值。
步骤504、当信干噪比不小于信干噪比阈值时，接收端生成携带有ACK 的反馈信息。执行步骤505。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，如果SINR1≥ThresholdTBS，接收端生成携带有ACK的反馈信息。SINR1为数据信息被均衡处理前物理信道的信干噪比，ThresholdTBS为该信干噪比对应的信干噪比阈值。
当信干噪比为数据信息被均衡处理后物理信道的信干噪比时，以SC-FDMA系统为例，如果SINRSC-FDMA≥ThresholdTBS，接收端生成携带有ACK的反馈信息。其中，SINRSC-FDMA为数据信息被均衡处理前物理信道的信干噪比，ThresholdTBS为该信干噪比对应的信干噪比阈值。
需要补充说明的是，步骤503和步骤504无先后顺序，步骤503和步骤504为不同的并列处理方式。在执行了步骤502后，或者执行步骤503，或者执行步骤504。
步骤505、接收端向发送端发送反馈信息。执行步骤506。
接收端生成携带有ACK或NACK的反馈信息之后，将该反馈信息发送至发送端，以便于发送端根据该反馈信息确定是否需要重传目标数据。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，如果SINR1＜ThresholdTBS，接收端生成携带有NACK的反馈信息。发送端根据该反馈信息中的NACK确定需要向接收端重传目标数据。
步骤506、发送端根据反馈信息确定是否需要重传目标数据。
发送端根据反馈信息确定是否需要向接收端重传目标数据。当需要重传目标数据时，发送端将该目标数据再次发送至接收端，当不需要重传目标数据时，发送端向接收端发送新的数据。
本发明实施例中，接收端通过物理信道的信干噪比对接收到的目标数据进行非校验判决，该信干噪比可以为数据信息被均衡处理前物理信道的信干噪比，或数据信息被均衡处理后物理信道的信干噪比。接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
综上所述，本发明实施例提供的混合自动重传请求反馈方法，由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据，该测量值为物理信道的信干噪比，相较于现有技术，接收端无 需对目标数据执行校验处理，再向发送端发送反馈信息，所以每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
图6是本发明实施例提供的一种混合自动重传请求反馈方法的流程图，该方法可以用于图1-1所示的实施环境。如图6所示，该方法可以包括：
步骤601、发送端向接收端发送数据信息。执行步骤602。
数据信息包括目标数据。该发送端可以为UE，也可以为BS。当发送端为UE时，接收端为BS；当发送端为BS时，接收端为UE。
步骤602、在数据信息中的目标数据未被校验时，接收端确定目标数据的测量值，该测量值为物理信道的信干噪比。执行步骤603。
该测量值用于指示物理信道传输目标数据的可靠度。该测量值可以为物理信道的信干噪比。
示例的，该信干噪比可以为数据信息被均衡处理前物理信道的信干噪比，或数据信息被均衡处理后物理信道的信干噪比。
一方面，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，接收端可以采用上述公式(9)～(12)确定该信干噪比SINR1。
另一方面，当信干噪比为数据信息被均衡处理后物理信道的信干噪比时，示例的，对于SC-FDMA系统来说，接收端可以采用公式(13)计算该信干噪比SINRSC-FDMA；对于OFDM系统来说，接收端可以采用公式(14)计算该信干噪比SINROFDM。
步骤603、接收端获取物理信道上TBS。执行步骤604。
接收端获取物理信道上TBS的具体过程可以参考现有技术，本发明实施例对此不再赘述。
步骤604、接收端根据信干噪比确定物理信道的数据传输速率。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，接收端可以采用公式(15)确定物理信道的数据传输速率。
Figure PCTCN2016108893-appb-000035
其中，Rate为物理信道的数据传输速率，Tsymbol为信道估计模块输出符号的时间长度，W为系统带宽，βmax为最大的普效率，普效率的单位为比特每秒每赫兹(bit/s/Hz)，SINR1为数据信息被均衡处理前物理信道的信干噪比，μ为回退因子，βmax和μ均可以自由调整。
步骤605、当TBS小于数据传输速率时，接收端生成携带有NACK的反 馈信息。执行步骤607。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，如果TBS＜Rate，接收端生成携带有NACK的反馈信息。其中，TBS为物理信道上传输块大小，Rate为物理信道的数据传输速率。
步骤606、当TBS不小于数据传输速率时，接收端生成携带有ACK的反馈信息。执行步骤607。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，如果TBS≥Rate，接收端生成携带有ACK的反馈信息。其中，TBS为物理信道上传输块大小，Rate为物理信道的数据传输速率。
需要补充说明的是，步骤605和步骤606无先后顺序，步骤605和步骤606为不同的并列处理方式。在执行了步骤604后，或者执行步骤605，或者执行步骤606。
步骤607、接收端向发送端发送反馈信息。执行步骤608。
接收端生成携带有ACK或NACK的反馈信息之后，将该反馈信息发送至发送端，以便于发送端根据该反馈信息确定是否需要重传目标数据。
示例的，当信干噪比为数据信息被均衡处理前物理信道的信干噪比时，如果TBS＜Rate，接收端生成携带有NACK的反馈信息。发送端根据该反馈信息中的NACK确定需要向接收端重传目标数据。
步骤608、发送端根据反馈信息确定是否需要重传目标数据。
发送端根据反馈信息确定是否需要向接收端重传目标数据。当需要重传目标数据时，发送端将该目标数据再次发送至接收端，当不需要重传目标数据时，发送端向接收端发送新的数据。
本发明实施例中，接收端通过物理信道上TBS和物理信道的信干噪比，对接收到的目标数据进行非校验判决。该信干噪比可以为数据信息被均衡处理前物理信道的信干噪比，或数据信息被均衡处理后物理信道的信干噪比。该方法中，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以接收端每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
需要说明的是，本发明实施例提供的混合自动重传请求反馈方法步骤的先后顺序可以进行适当调整，步骤也可以根据情况进行相应增减，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本申请的保护范围之内，因此不再赘述。
综上所述，本发明实施例提供的混合自动重传请求反馈方法，由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据，该测量值为物理信道的信干噪比，相较于现有技术，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
需要补充说明的是，本发明实施例提供的混合自动重传请求反馈方法，可以运用于现有技术中的迭代检测中，比如数据传输过程中的解调迭代，译码迭代等，简化了检测过程，提高了检测结果准确度；也可以用于HARQ合并过程中，HARQ合并指的是重传的数据与历史数据的合并，该方法简化了合并过程，提高了校验准确度，具体可以参考图3-1。另外，本发明实施例对通信系统的制式不做限定。
目前的无线通信系统为了满足低时延业务需求，期望采用更短的TTI，比如5G系统为了降低时延，采用的TTI的长度通常为0.1毫秒，该TTI的长度是LTE系统中TTI的长度的1/10。在低时延业务需求下，需要接收端快速执行HARQ反馈，现有技术中很难进行数据重传，或者只能重传1次数据，直接影响了HARQ增益(HARQ增益指的是对多次独立传输相同的数据产生的解调信息进行合并处理得到的分集增益)。
现有技术中，接收端在接收到发送端发送的数据后，对该数据依次进行译码和CRC，并根据校验结果向发送端发送反馈信息。当该反馈信息携带有NACK时，表示发送端需要重传数据，即需要重新发送上一次的数据。之后，接收端会将重传的数据与历史数据(即上一次发送的数据)进行合并处理，再对合并后的数据进行检测，完成HARQ反馈。接收端完成CRC，向发送端发送反馈信息所需用的时间较长，消耗的TTI较长，导致HARQ周期较长，HARQ进程(HARQ进程用于控制数据传输)较多，很可能就无法满足低时延业务需求。而本发明实施例提供的混合自动重传请求反馈方法，是一种基于非CRC的HARQ重传机制，通过该机制能够快速执行HARQ反馈，进而快速重传数据。该方法能够在低时延业务场景下增加数据重传次数，获取多次的解调信息，对多次的解调信息进行合并，进而获取HARQ增益。该方法满足了低时延业务需求。
下述为本申请的装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。
图7是本发明实施例提供的一种混合自动重传请求反馈装置700的结构示意图。该装置用于接收端。示例的，该装置可以通过软件、硬件或者两者的结合实现成为图1-1所示实施环境中的接收端的部分或全部。如图7所示，该装置700包括：
接收模块710，用于接收发送端发送的数据信息，该数据信息包括目标数据。
确定模块720，用于在数据信息中的目标数据未被校验时，确定目标数据的测量值，该测量值用于指示物理信道传输目标数据的可靠度。
生成模块730，用于根据测量值生成反馈信息，该反馈信息携带有ACK或NACK。
发送模块740，用于向发送端发送反馈信息，以便于发送端根据反馈信息确定是否需要重传目标数据。
在一种可实现方式中，测量值为用于指示数据信息被均衡处理后物理信道的信噪比的第一质量值，相应的，生成模块730，用于：
当第一质量值小于质量阈值时，生成携带有NACK的反馈信息；
当第一质量值不小于质量阈值时，生成携带有ACK的反馈信息。
其中，质量阈值根据目标数据的编码方式、码块长度和码率中的至少一个确定。
其中，第一质量值可以为ACMI的值，质量阈值可以为目标数据的符号传输速率，相应的，确定模块720，用于：
确定物理信道的BICM容量；
根据BICM容量和目标数据的重传合并方式，确定ACMI的值。
可选的，目标数据的重传合并方式为CC方式或IR合并方式。
在一种可实现方式中，测量值为数据信息的信息统计量，相应的，生成模块730，用于：
根据信息统计量确定目标数据的信息错误率；
当信息错误率大于错误率阈值时，生成携带有NACK的反馈信息；
当信息错误率不大于错误率阈值时，生成携带有ACK的反馈信息。
其中，错误率阈值根据目标数据的编码方式、码块长度和码率中的至少一 个确定。
可选的，信息统计量为数据信息被解调处理后的信息统计量或被译码处理后的信息统计量。
可选的，信息错误率为码字错误率或平均比特错误率。
在一种可实现方式中，测量值为物理信道的信干噪比，相应的，生成模块730，用于：
当信干噪比小于信干噪比阈值时，生成携带有NACK的反馈信息。
当信干噪比不小于信干噪比阈值时，生成携带有ACK的反馈信息。
其中，信干噪比阈值根据目标数据的编码方式、码块长度和码率中的至少一个确定。
可选的，信干噪比阈值可以根据信干噪比、MCS表格和BLER曲线确定信干噪比阈值。
在一种可实现方式中，测量值为物理信道的信干噪比，相应的，生成模块730，用于：
获取物理信道上TBS；
根据信干噪比确定物理信道的数据传输速率；
当TBS小于数据传输速率时，生成携带有NACK的反馈信息；
当TBS不小于数据传输速率时，生成携带有ACK的反馈信息。
可选的，信干噪比为数据信息被均衡处理前物理信道的信干噪比。
此外，图7中各模块的具体工作过程可以参考图2、图3-1、图4、图5或图6所示的实施方式进行说明。如接收模块710用于执行上述实施例中的步骤201，确定模块720用于执行上述实施例中的步骤202，生成模块730用于执行上述实施例中的步骤203，发送模块740用于执行上述实施例中的步骤204。
综上所述，本发明实施例提供的混合自动重传请求反馈装置，由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据，相较于现有技术，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
图8是本发明实施例提供的又一种混合自动重传请求反馈装置800的结构 示意图。该装置用于接收端，该接收端可以为图1-1所示实施环境中的接收端。应该理解的是，该混合自动重传请求反馈装置可以具有比图8中所示的更多的或者更少的部件，可以组合两个或更多的部件，或者可以具有不同的部件配置。图8中所示出的各个部件可以在包括一个或多个信号处理和/或专用集成电路在内的硬件、软件、或硬件和软件的组合中实现。现以图8所示的混合自动重传请求反馈装置为例进行具体的说明。如图8所示，该混合自动重传请求反馈装置包括至少一个处理器801、存储器802、通讯模块803、至少一个通信总线804和通讯天线805。该混合自动重传请求反馈装置还包括其他功能性的构件，比如：电池模组、有线/无线充电结构等。通信总线804用于实现这些组件之间的连接通信。存储器802可能包含非易失性固态存储器和/或动力学的非易失性存储设备，如闪速存储器、可转动的磁盘驱动器。通讯模块803可以用于远距通信，如全球移动通信系统(Global System For Mobile Communications，GSM)、码分多址(Code division multiple access，CDMA)、通用分组无线服务(General Packet Radio Service，GPRS)、增强型数据速率GSM演进(Enhanced Data Rate for GSM Evolution，EDGE)、3G技术如宽带码分多址(Wideband Code Division Multiple Access，WCDMA)、时分同步码分多址(Time Division-Synchronous Code Division Multiple Access，TD-SCDMA)、4G技术如LTE、5G技术等。通讯天线805用于接收和发送通讯信号。
具体的，存储器802包含操作系统8021和应用程序8022。操作系统8021包含各种操作系统程序，用于实现基于硬件的各项操作；应用程序8022包含各种应用程序，用于实现各种应用功能，比如目标数据的测量值确定程序和反馈信息生成程序，这些程序能够使接收端在数据信息中的目标数据未被校验时，确定目标数据的测量值，根据测量值生成反馈信息。其中，该测量值用于指示物理信道传输目标数据的可靠度，该反馈信息携带有ACK或NACK。
处理器801通过通信总线804与各个模块和部件通信。处理器801可以执行存储器802中存储的应用程序来实现接收端，使得接收端实现上述混合自动重传请求反馈方法。
本发明实施例提供的混合自动重传请求反馈装置通过上述各个执行模块的配合实现图2、图3-1、图4、图5或图6所示的方法实施例，图7所示的装置实施例中接收端完成的各项功能及步骤。如上文中图7的确定模块720和生成模块730，可以是由处理器801执行存储器802中存储的应用程序来实现； 图7的接收模块710和发送模块740可以是由通讯模块803和通讯天线805来实现。
综上所述，本发明实施例提供的混合自动重传请求反馈装置，由于接收端能够在数据信息中的目标数据未被校验时，确定目标数据的测量值，并根据该测量值向发送端发送反馈信息，使得发送端能够根据该反馈信息确定是否需要重传目标数据。相较于现有技术，接收端无需对目标数据执行校验处理，再向发送端发送反馈信息，所以每次发送反馈信息的总时间减少，消耗的TTI更短，因此，能够满足低时延业务需求。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的装置和模块的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的混合自动重传请求反馈方法和混合自动重传请求反馈装置，可以通过其它的方式实现。例如，以上所描述的混合自动重传请求反馈装置实施例仅仅是示意性的，例如，混合自动重传请求反馈装置中各个模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (22)

  1. 一种混合自动重传请求反馈方法，其特征在于，用于接收端，所述方法包括：
    接收发送端发送的数据信息，所述数据信息包括目标数据；
    在所述数据信息中的目标数据未被校验时，确定所述目标数据的测量值，所述测量值用于指示物理信道传输所述目标数据的可靠度；
    根据所述测量值生成反馈信息，所述反馈信息携带有肯定应答ACK或否定应答NACK；
    向所述发送端发送所述反馈信息，以便于所述发送端根据所述反馈信息确定是否需要重传所述目标数据。
  2. 根据权利要求1所述的方法，其特征在于，所述测量值为用于指示所述数据信息被均衡处理后所述物理信道的信噪比的第一质量值，所述根据所述测量值生成反馈信息，包括：
    当所述第一质量值小于质量阈值时，生成携带有所述NACK的反馈信息；
    当所述第一质量值不小于所述质量阈值时，生成携带有所述ACK的反馈信息；
    其中，所述质量阈值根据所述目标数据的编码方式、码块长度和码率中的至少一个确定。
  3. 根据权利要求2所述的方法，其特征在于，所述第一质量值为累计的条件互信息ACMI的值，所述质量阈值为所述目标数据的符号传输速率，所述确定所述目标数据的测量值，包括：
    确定所述物理信道的比特交织编码调制BICM容量；
    根据所述BICM容量和所述目标数据的重传合并方式，确定所述ACMI的值。
  4. 根据权利要求3所述的方法，其特征在于，
    所述目标数据的重传合并方式为追加合并CC方式或增量冗余IR合并方式。
  5. 根据权利要求1所述的方法，其特征在于，所述测量值为所述数据信息的信息统计量，所述根据所述测量值生成反馈信息，包括：
    根据所述信息统计量确定所述目标数据的信息错误率；
    当所述信息错误率大于错误率阈值时，生成携带有所述NACK的反馈信息；
    当所述信息错误率不大于所述错误率阈值时，生成携带有所述ACK的反馈信息；
    其中，所述错误率阈值根据所述目标数据的编码方式、码块长度和码率中的至少一个确定。
  6. 根据权利要求5所述的方法，其特征在于，
    所述信息统计量为所述数据信息被解调处理后的信息统计量或被译码处理后的信息统计量。
  7. 根据权利要求5或6所述的方法，其特征在于，所述信息错误率为码字错误率或平均比特错误率。
  8. 根据权利要求1所述的方法，其特征在于，所述测量值为所述物理信道的信干噪比，所述根据所述测量值生成反馈信息，包括：
    当所述信干噪比小于信干噪比阈值时，生成携带有所述NACK的反馈信息；
    当所述信干噪比不小于所述信干噪比阈值时，生成携带有所述ACK的反馈信息；
    其中，所述信干噪比阈值根据所述目标数据的编码方式、码块长度和码率中的至少一个确定。
  9. 根据权利要求8所述的方法，其特征在于，所述信干噪比阈值根据所述信干噪比、调制编码策略MCS表格和误块率BLER曲线确定。
  10. 根据权利要求1所述的方法，其特征在于，所述测量值为所述物理信道的信干噪比，所述根据所述测量值生成反馈信息，包括：
    获取所述物理信道上传输块大小TBS；
    根据所述信干噪比确定所述物理信道的数据传输速率；
    当所述TBS小于所述数据传输速率时，生成携带有所述NACK的反馈信息；
    当所述TBS不小于所述数据传输速率时，生成携带有所述ACK的反馈信息。
  11. 根据权利要求9或10所述的方法，其特征在于，所述信干噪比为所述数据信息被均衡处理前所述物理信道的信干噪比。
  12. 一种混合自动重传请求反馈装置，其特征在于，用于接收端，所述装置包括：
    接收模块，用于接收发送端发送的数据信息，所述数据信息包括目标数据；
    确定模块，用于在所述数据信息中的目标数据未被校验时，确定所述目标数据的测量值，所述测量值用于指示物理信道传输所述目标数据的可靠度；
    生成模块，用于根据所述测量值生成反馈信息，所述反馈信息携带有肯定应答ACK或否定应答NACK；
    发送模块，用于向所述发送端发送所述反馈信息，以便于所述发送端根据所述反馈信息确定是否需要重传所述目标数据。
  13. 根据权利要求12所述的装置，其特征在于，所述测量值为用于指示所述数据信息被均衡处理后所述物理信道的信噪比的第一质量值，所述生成模块，用于：
    当所述第一质量值小于质量阈值时，生成携带有所述NACK的反馈信息；
    当所述第一质量值不小于所述质量阈值时，生成携带有所述ACK的反馈信息；
    其中，所述质量阈值根据所述目标数据的编码方式、码块长度和码率中的至少一个确定。
  14. 根据权利要求13所述的装置，其特征在于，所述第一质量值为累计的条件互信息ACMI的值，所述质量阈值为所述目标数据的符号传输速率，所述确定模块，用于：
    确定所述物理信道的比特交织编码调制BICM容量；
    根据所述BICM容量和所述目标数据的重传合并方式，确定所述ACMI的值。
  15. 根据权利要求14所述的装置，其特征在于，
    所述目标数据的重传合并方式为追加合并CC方式或增量冗余IR合并方式。
  16. 根据权利要求12所述的装置，其特征在于，所述测量值为所述数据信息的信息统计量，所述生成模块，用于：
    根据所述信息统计量确定所述目标数据的信息错误率；
    当所述信息错误率大于错误率阈值时，生成携带有所述NACK的反馈信息；
    当所述信息错误率不大于所述错误率阈值时，生成携带有所述ACK的反馈信息；
    其中，所述错误率阈值根据所述目标数据的编码方式、码块长度和码率中的至少一个确定。
  17. 根据权利要求16所述的装置，其特征在于，
    所述信息统计量为所述数据信息被解调处理后的信息统计量或被译码处理后的信息统计量。
  18. 根据权利要求16或17所述的装置，其特征在于，所述信息错误率为码字错误率或平均比特错误率。
  19. 根据权利要求12所述的装置，其特征在于，所述测量值为所述物理信道的信干噪比，所述生成模块，用于：
    当所述信干噪比小于信干噪比阈值时，生成携带有所述NACK的反馈信息；
    当所述信干噪比不小于所述信干噪比阈值时，生成携带有所述ACK的反馈信息；
    其中，所述信干噪比阈值根据所述目标数据的编码方式、码块长度和码率中的至少一个确定。
  20. 根据权利要求19所述的装置，其特征在于，所述信干噪比阈值根据所 述信干噪比、调制编码策略MCS表格和误块率BLER曲线确定。
  21. 根据权利要求12所述的装置，其特征在于，所述测量值为所述物理信道的信干噪比，所述生成模块，用于：
    获取所述物理信道上传输块大小TBS；
    根据所述信干噪比确定所述物理信道的数据传输速率；
    当所述TBS小于所述数据传输速率时，生成携带有所述NACK的反馈信息；
    当所述TBS不小于所述数据传输速率时，生成携带有所述ACK的反馈信息。
  22. 根据权利要求20或21所述的装置，其特征在于，所述信干噪比为所述数据信息被均衡处理前所述物理信道的信干噪比。
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