WO2021227834A1 - Procédé et appareil de transmission d'informations ainsi que support d'informations - Google Patents

Procédé et appareil de transmission d'informations ainsi que support d'informations Download PDF

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Publication number
WO2021227834A1
WO2021227834A1 PCT/CN2021/089407 CN2021089407W WO2021227834A1 WO 2021227834 A1 WO2021227834 A1 WO 2021227834A1 CN 2021089407 W CN2021089407 W CN 2021089407W WO 2021227834 A1 WO2021227834 A1 WO 2021227834A1
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Prior art keywords
tbs
communication device
coding
encoding
transmission block
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PCT/CN2021/089407
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English (en)
Chinese (zh)
Inventor
余雅威
郭志恒
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华为技术有限公司
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Publication of WO2021227834A1 publication Critical patent/WO2021227834A1/fr

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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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • 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
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/0013—Rate matching, e.g. puncturing or repetition of code symbols
    • 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
    • H04L1/0061—Error detection codes
    • 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
    • H04L1/0067—Rate matching
    • 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

Definitions

  • This application relates to the field of communication technology, and in particular to an information transmission method, device and storage medium.
  • the transmitted information arrives at the receiving end after channel fading and interference, resulting in errors in the received information.
  • channel coding is required during information transmission, that is, the sending end adds some redundant error control code words in the information sequence, so that the receiving end can control the code words according to these error control codes. The information is judged and corrected.
  • Low-density parity-check is a linear block code that can make the decoding at the receiving end low in complexity and flexible in structure, and has been widely used in channel coding.
  • LDPC is used to channel-encode the data channel
  • two LDPC with different coding code rates are used, namely the base graph (BG) of 1/3 coding rate, the LDPC of 1/5 coding rate and the coding rate of 1/5.
  • BG2 LDPC Low-density parity-check
  • the LDPC of BG1 is suitable for transmission with a larger transmit block size (TBS) and a higher code rate
  • TBS transmit block size
  • LDPC of BG2 is suitable for transmission with a smaller TBS and a lower code rate.
  • the network equipment indicates a spreading factor to the terminal equipment, and the terminal equipment expands the first bit rate or the first TBS during channel coding according to the spreading factor to realize refined transmission, and through hybrid automatic retransmission Request (hybrid automatic repeat-request, HARQ) transmission reduces resource waste and improves transmission efficiency.
  • hybrid automatic retransmission Request hybrid automatic repeat-request, HARQ
  • the spreading factor acts on the first code rate or after the first TBS, the actual transmission code rate and/or TBS changes, and the terminal device cannot accurately determine which BG should be used for LDPC channel coding.
  • the embodiments of the present application provide an information transmission method, device and storage medium to solve the problem that the LDPC channel cannot be accurately determined when the code rate and/or TBS actually transmitted in channel coding are inconsistent with the first code rate and/or first TBS.
  • an embodiment of the present application provides an information transmission method, including: a first communication device determines an encoding mode of a transmission block according to a spreading factor, and the spreading factor is used for the first code rate or the first code rate used when channel encoding the transmission block.
  • the first TBS is extended, and the encoding method includes the LDPC code encoding method based on BG1 and the LDPC code encoding method based on BG2.
  • the LDPC encoding rates corresponding to BG1 and BG2 are different; then, the instruction information of the encoding method is sent to the second communication device,
  • the indication information is used to indicate the encoding mode of the transport block.
  • the first communication device determines the encoding mode of the transmission block according to the spreading factor, which solves the problem that when the actual transmission code rate and/or TBS is inconsistent with the first code rate and/or first TBS in channel coding, The problem of accurately determining which basic graph should be selected for LDPC channel coding.
  • the first communication device instructs the determined coding mode of the transmission block to the second communication device, so that the second communication device uses the coding mode indicated by the first communication device to perform channel coding or decoding without having to determine the coding of the transmission block by itself.
  • the method further reduces the calculation amount and energy consumption of the second communication device, and also avoids the time spent by the second communication device in determining the encoding method, thereby reducing the transmission delay of the system, and then improving the transmission efficiency of the system.
  • the content included in the above indication information may be: the indication information includes the identification information of the coding method.
  • the identification information may be through downlink control information (DCI) or radio resource control (radio resource control, RRC) signaling.
  • DCI downlink control information
  • RRC radio resource control
  • the value of this field is 1, it means that the coding mode of the transport block is LDPC coding mode based on BG1.
  • the value of this field is 2, it means that the coding mode of the transport block is based on LDPC encoding method of BG2.
  • the above field can be a newly added DCI field or RRC field, or it can be the value of the redundancy (reserved) state of an existing field in DCI or RRC.
  • the above values 1 and 2 just indicate two different value states. , The specific value is not limited;
  • the indication information includes the coding rate and/or identification information of the TBS used by the first communication device when determining the coding mode of the transmission block.
  • the identification information may be obtained through a field in DCI or RRC signaling. Indicate, for example, when the value of this field is 3, it means that the first communication device uses the second code rate and/or the second TBS to determine the coding mode of the transmission block; when the value of this field is 4, it means that the first communication The device uses the first code rate and/or the first TBS to determine the encoding mode of the transport block.
  • the above field can be a newly added DCI field or RRC field, or it can be a redundant state value of an existing field in DCI or RRC.
  • the above values 3 and 4 just indicate two different value states. The value is not limited. ;
  • the indication information includes function identification information of the expansion factor.
  • the function identification information may be indicated by a field in DCI or RRC signaling. When the value of this field is 5, it means that the expansion factor is used for One code rate is expanded, and the first TBS is not expanded; when the value of this field is 6, it means that the expansion factor is used to expand the first TBS.
  • the above-mentioned field may be a newly added DCI field or RRC field, or may be a redundant state value of an existing field in DCI or RRC.
  • the above values 5 and 6 only represent two different value states, and the specific values are not limited.
  • the first communication device may adopt any of the above-mentioned identification information to be carried in the indication information according to actual needs, which improves the flexibility of the first communication device to indicate the coding mode to the second communication device.
  • the above-mentioned first communication device determines the encoding mode of the transmission block according to the spreading factor, including the following situations:
  • the first communication device determines the encoding mode of the transmission block according to the first code rate and/or the first TBS in the case that the expansion factor is used to indicate the expansion of the first code rate, and the first TBS is not expanded.
  • Case 2 When the expansion factor is used to indicate the expansion of the first TBS, the first communication device determines the encoding mode of the transport block according to the second code rate and/or the second TBS, and the second TBS is the expanded TBS , The second bit rate is based on the bit rate determined by the second TBS.
  • the first communication device may determine the coding mode of the transmission block in different ways based on the function of the spreading factor, thereby realizing the actual transmission code rate and/or the sum of the TBS and the first code rate in the channel coding. /Or when the first TBS is inconsistent, it is impossible to accurately determine which basic graph should be selected for LDPC channel coding, which ensures the effectiveness of information transmission.
  • the channel coding mode of the first communication device includes but is not limited to the following:
  • Method 1 When it is determined that the encoding method of the transport block is the LDPC code encoding method based on BG2, and the second TBS is greater than 3824 bits, the first communication device divides the transport block of the second TBS to be sent into multiple CBs; if The difference between the size of the first TBS and the CB is greater than the preset value, and the first communication device uses the BG2-based LDPC code encoding method to perform channel encoding on the undivided transmission block of the second TBS. In this coding method, when the size of the CB is much smaller than the first TBS, the transmission block of the second TBS is not divided during channel coding, which can reduce the performance loss caused by small packet transmission.
  • the above-mentioned preset value can be a specific number, such as 500.
  • the foregoing preset value may also be a percentage. For example, when the difference between the size of the first TBS and the CB is greater than 50% of the size of the CB, CB segmentation is not performed.
  • Manner 2 When the determined coding mode of the transport block is the BG2 LDPC code coding mode, and the second TBS is greater than 3824 bits, the first communication device divides the transmission block of the second TBS to be sent into multiple CBs; A communication device uses a BG2-based LDPC code encoding method to perform channel encoding on each CB.
  • the first communication device in the case that the determined encoding mode of the transmission block is the LDPC code encoding mode of BG2, and the second TBS is greater than 3824 bits, the first communication device can flexibly select the above-mentioned mode 1 or mode 2 based on the transmission requirements.
  • Channel coding for example, when channel coding is adopted in mode 1, can reduce the performance loss caused by small packet transmission, and when channel coding is adopted in mode 2, the buffer storage space and coding complexity of each encoder can be reduced, thereby improving coding efficiency.
  • the channel decoding methods of the first communication device include but are not limited to the following:
  • Method 1 When it is determined that the encoding method of the transport block is the LDPC code encoding method based on BG2, and the second TBS is greater than 3,824 bits, the first communication device divides the received transport block of the second TBS into multiple CBs; The difference between the size of a TBS and the CB is greater than the preset value, then the first communication device uses the BG2-based LDPC code encoding method to perform channel decoding on the undivided transport block of the second TBS.
  • Manner 2 When the determined coding mode of the transport block is the LDPC code coding mode of BG2, and the second TBS is greater than 3824 bits, the first communication device divides the received transport block of the second TBS into multiple CBs; first The communication device uses the BG2-based LDPC code encoding method to perform channel decoding on each CB.
  • the first communication device can flexibly select the above-mentioned mode 1 or mode 2 based on the transmission requirements.
  • Channel decoding for example, when method 1 is used for channel decoding, the performance loss caused by small packet transmission can be reduced, and when method 2 is used for channel decoding, the storage space and decoding complexity of each decoder’s buffer can be reduced. In turn, the decoding efficiency is improved.
  • an embodiment of the present application provides an information transmission method, including: a second communication device receives instruction information from a first communication device, the instruction information is used to indicate a coding method of a transmission block; the second communication device obtains and indicates The encoding method corresponding to the information, and the obtained encoding method is used to channel encoding or decoding the transport block.
  • the encoding method includes the low-density parity-check LDPC code encoding method based on BG1 and the LDPC code encoding method based on BG2, BG1 and BG2 The corresponding coding rate is different.
  • the second communication device uses the coding mode indicated by the first communication device to perform channel coding or decoding, without having to determine the coding mode of the transmission block by itself, thereby reducing the calculation amount and energy consumption of the second communication device, and also It avoids the time taken by the second communication device to determine the encoding mode, thereby reducing the transmission delay of the system, and then improving the transmission efficiency of the system.
  • the above-mentioned indication information may include: the indication information includes the identification information of the coding mode; or, the indication information includes the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block; or , The indication information includes the function identification information of the expansion factor.
  • the encoding manner for the second communication device to obtain the transmission block includes the following situations:
  • the second communication device when the indication information includes the coding rate and/or TBS identification information used by the first communication device when determining the coding mode of the transmission block, the second communication device is based on the coding rate and/or TBS.
  • the coding rate and/or TBS corresponding to the identification information of obtain the coding mode of the transport block.
  • the second communication device can quickly obtain the encoding mode of the transport block by looking up the table according to the encoding rate and/or the TBS identifier, and the process is simple and easy to implement.
  • the second communication device obtains the coding mode corresponding to the indication information
  • the second communication device obtains the transmission factor according to the expansion factor corresponding to the function identification information of the expansion factor.
  • Block coding mode the spreading factor is used to spread the first code rate or the first TBS used when channel coding the transmission block.
  • the second communication device obtains the encoding mode of the transmission block according to the expansion factor corresponding to the function identification information of the expansion factor, including the following situations:
  • the second communication device obtains the encoding mode of the transport block according to the first code rate and/or the first TBS under the condition that the expansion factor is used to indicate the first code rate is expanded, and the first TBS is not expanded.
  • Case 2 When the expansion factor is used to indicate the expansion of the first TBS, the second communication device obtains the encoding mode of the transport block according to the second code rate and/or the second TBS, and the second TBS is the expanded TBS , The second bit rate is based on the bit rate determined by the second TBS.
  • the second communication device may expand the function identification information of the factor, and may use different methods to quickly and accurately obtain the encoding mode of the transmission block.
  • the channel coding mode of the second communication device includes but is not limited to the following:
  • Manner 1 In the case where the obtained transmission block encoding method is the BG2 LDPC code encoding method, and the second TBS is greater than 3824 bits, the second communication device divides the transmission block of the second TBS to be sent into multiple code blocks CB ; If the difference between the size of the first TBS and the CB is greater than the preset value, the second communication device uses the BG2-based LDPC code encoding method to perform channel encoding on the undivided second TBS transport block.
  • Manner 2 When the encoding mode of the obtained transmission block is BG2 LDPC code coding mode, and the second TBS is greater than 3824 bits, the second communication device divides the transmission block of the second TBS to be sent into multiple code blocks CB ; The second communication device uses the BG2-based LDPC code encoding method to perform channel encoding on each CB.
  • the second communication device in the case that the determined encoding mode of the transport block is the BG2 LDPC code encoding mode, and the second TBS is greater than 3,824 bits, the second communication device can flexibly select the above-mentioned mode 1 or mode 2 based on the transmission requirements.
  • Channel coding for example, when channel coding is performed in mode 1, can reduce the performance loss caused by small packet transmission, and when channel coding is performed in mode 2, it can effectively reduce the buffer space and coding complexity of the encoder.
  • the channel decoding methods of the second communication device include but are not limited to the following:
  • Method 1 In the case where the obtained transmission block encoding method is an LDPC code encoding method based on BG2, and the second TBS is greater than 3824 bits, the second communication device divides the received transmission block of the second TBS into multiple code blocks CB ; If the difference between the size of the first TBS and the CB is greater than the preset value, the second communication device uses a BG2-based LDPC code encoding method to perform channel decoding on the undivided transport block of the second TBS.
  • the second communication device divides the received transmission block of the second TBS into multiple code blocks CB;
  • the second communication device uses the BG2-based LDPC code encoding method to perform channel decoding on each CB.
  • the second communication device in the case that the determined encoding mode of the transport block is the BG2 LDPC code encoding mode, and the second TBS is greater than 3,824 bits, the second communication device can flexibly select the above-mentioned mode 1 or mode 2 based on the transmission requirements.
  • Channel decoding for example, when method 1 is used for channel decoding, can reduce the performance loss caused by small packet transmission, and when method 2 is used for channel decoding, it can effectively reduce the buffer space and decoding complexity of the decoder.
  • an information transmission method including:
  • the communication device determines the coding mode of the transmission block according to the spreading factor.
  • the spreading factor is used to expand the first code rate or the first TBS used when channel coding the transmission block.
  • the coding method includes BG1-based low-density parity-check LDPC code
  • the encoding method is different from the encoding method of LDPC code based on BG2, and the corresponding encoding rate of BG1 and BG2 are different;
  • the communication device uses the determined encoding mode of the transport block to perform channel encoding or decoding.
  • the communication device determines the coding mode of the transmission block according to the spreading factor, which solves the problem that when the actual transmission code rate and/or TBS is inconsistent with the first code rate and/or the first TBS in the channel coding, it cannot be accurately determined
  • the question of which basic picture should be selected for LDPC channel coding ensures the effective progress of information transmission.
  • the communication device determines the encoding mode of the transmission block according to the spreading factor, including the following situations:
  • the communication device determines the encoding mode of the transport block according to the first code rate and/or the first TBS in the case that the spreading factor is used to indicate the first code rate is extended, and the first TBS is not extended.
  • the communication device determines the encoding mode of the transport block according to the second code rate and/or the second TBS.
  • the second TBS is the expanded TBS
  • the second TBS is the expanded TBS.
  • the second code rate is a code rate determined based on the second TBS.
  • the communication device can determine the coding mode of the transmission block in different ways based on the function of the spreading factor, thereby realizing the actual transmission code rate and/or TBS and the first code rate and/or the first code rate in channel coding.
  • the encoding method of the transmission block is accurately determined to ensure the effectiveness of information transmission.
  • the channel coding methods of communication equipment include but are not limited to the following:
  • Method 1 When it is determined that the encoding method of the transmission block is the LDPC code encoding method based on BG2, and the second TBS is greater than 3824 bits, the communication device divides the transmission block of the second TBS to be sent into multiple code blocks; If the difference between the size of a TBS and the code block is greater than the preset value, the communication device uses the BG2-based LDPC code encoding method to perform channel encoding on the transport block of the second TBS to be sent. In this coding method, when the size of the CB is much smaller than the first TBS, the transmission block of the second TBS is not divided during channel coding, which can reduce the performance loss caused by small packet transmission.
  • the communication device divides the transport block of the second TBS to be sent into multiple code blocks CB;
  • the device uses the BG2-based LDPC code encoding method to perform channel encoding on each CB.
  • the communication device can flexibly select the above method 1 or method 2 for channel encoding based on transmission requirements For example, when method 1 is used for channel coding, the performance loss caused by small packet transmission can be reduced, and when method 2 is used for channel coding, the buffer space and decoding complexity of the encoder can be reduced.
  • the channel decoding methods of communication equipment include but are not limited to the following:
  • Method 1 When it is determined that the encoding method of the transport block is the LDPC code encoding method based on BG2, and the second TBS is greater than 3824 bits, the communication device divides the received transport block of the second TBS into multiple code blocks CB; If the difference between the size of a TBS and the CB is greater than the preset value, the communication device uses the BG2-based LDPC code encoding method to perform channel decoding on the received transport block of the second TBS.
  • Manner 2 When the coding mode of the transmission block determined by the communication device is the LDPC code coding mode of BG2, and the second TBS is greater than 3824 bits, the communication device divides the received transmission block of the second TBS into multiple code blocks CB; The communication device uses the BG2-based LDPC code encoding method to perform channel decoding on each CB.
  • the communication device when the determined encoding mode of the transmission block is the BG2 LDPC code encoding mode, and the second TBS is greater than 3,824 bits, the communication device can flexibly select the above-mentioned mode 1 or mode 2 for channel translation based on transmission requirements. For example, when method 1 is used for channel decoding, the performance loss caused by small packet transmission can be reduced. When method 2 is used for channel decoding, the buffer space and decoding complexity of the decoder can be effectively reduced.
  • an information transmission device including:
  • the processing unit is used to determine the coding mode of the transmission block according to the spreading factor.
  • the spreading factor is used to expand the first code rate or the first TBS used when channel coding the transmission block.
  • the coding mode includes BG1 based low-density parity. Verify that the LDPC code encoding method and the LDPC code encoding method based on BG2 have different encoding rates for BG1 and BG2;
  • the sending unit is configured to send indication information of the coding mode to the second communication device, where the indication information is used to indicate the coding mode of the transmission block.
  • the above-mentioned indication information includes the identification information of the coding mode; or, the indication information includes the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block; or, the indication The information includes function identification information of the expansion factor.
  • the processing unit is specifically configured to: when the spreading factor is used to indicate that the first bit rate is expanded, and the first TBS is not expanded, according to the first bit rate and/or the first TBS , To determine the encoding method of the transmission block.
  • the processing unit is specifically configured to determine the encoding mode of the transmission block according to the second code rate and/or the second TBS when the expansion factor is used to indicate the expansion of the first TBS,
  • the second TBS is an expanded TBS, and the second code rate is a code rate determined based on the second TBS.
  • the processing unit is further configured to transmit the second TBS to be transmitted when it is determined that the encoding method of the transmission block is an LDPC code encoding method based on BG2, and the second TBS is greater than 3,824 bits.
  • the block is divided into multiple code blocks CB; if the size difference between the first TBS and the CB is greater than the preset value, the BG2-based LDPC code coding method is used to perform channel coding on the undivided second TBS transport block.
  • the processing unit is further configured to transmit the second TBS to be transmitted when the encoding method of the determined transmission block is the LDPC encoding method of BG2, and the second TBS is greater than 3,824 bits.
  • the block is divided into multiple code blocks CB; the LDPC code coding method based on BG2 is used to perform channel coding on each CB.
  • the processing unit is further configured to determine that the encoding mode of the transmission block is an LDPC code encoding method based on BG2, and the second TBS is greater than 3824 bits, to transfer the received transmission block of the second TBS Divide into multiple code blocks CB; if the difference between the size of the first TBS and the CB is greater than the preset value, then use the BG2-based LDPC code encoding method to perform channel decoding on the undivided second TBS transport block.
  • the processing unit is further configured to: when the determined encoding mode of the transport block is the BG2 LDPC code encoding mode, and the second TBS is greater than 3824 bits, the received transport block of the second TBS Divide into multiple code blocks CB; use the BG2 based LDPC code encoding method to perform channel decoding on each CB.
  • an information transmission device including:
  • the receiving unit is configured to receive instruction information from the first communication device, where the instruction information is used to indicate the encoding mode of the transmission block;
  • the processing unit is used to obtain the coding mode corresponding to the indication information, and use the obtained coding mode to perform channel coding or decoding on the transmission block.
  • the coding mode includes a low-density parity-check LDPC code coding mode based on BG1 and an LDPC code based on BG2 Code coding method, BG1 and BG2 correspond to different coding rates.
  • the above-mentioned indication information includes the identification information of the coding mode; or, the indication information includes the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block; or, the indication The information includes function identification information of the expansion factor.
  • the indication information includes the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block
  • the processing unit is specifically configured to perform according to the coding rate and/or Or the coding rate and/or TBS corresponding to the identification information of the TBS to obtain the coding mode of the transport block.
  • the indication information includes the function identification information of the expansion factor
  • the processing unit is specifically configured to obtain the coding mode of the transmission block according to the expansion factor corresponding to the function identification information of the expansion factor, and the expansion factor is used to transmit The first code rate or the first TBS used when the block is channel-coded is expanded.
  • the processing unit is specifically configured to: when the spreading factor is used to indicate that the first bit rate is expanded, and the first TBS is not expanded, according to the first bit rate and/or the first TBS To obtain the encoding method of the transport block.
  • the processing unit is specifically configured to obtain the encoding mode of the transport block according to the second code rate and/or the second TBS when the expansion factor is used to indicate the expansion of the first TBS,
  • the second TBS is an expanded TBS, and the second code rate is a code rate determined based on the second TBS.
  • the processing unit is specifically configured to transmit the second TBS to be sent when the encoding method of the obtained transmission block is the LDPC code encoding method of BG2, and the second TBS is greater than 3824 bits.
  • the block is divided into multiple code blocks CB; if the size difference between the first TBS and the CB is greater than the preset value, the BG2-based LDPC code coding method is used to perform channel coding on the undivided second TBS transport block.
  • the processing unit is specifically configured to transmit the second TBS to be sent when the encoding method of the obtained transmission block is the LDPC code encoding method of BG2, and the second TBS is greater than 3824 bits.
  • the block is divided into multiple code blocks CB; the LDPC code coding method based on BG2 is used to perform channel coding on each CB.
  • the processing unit is specifically configured to transmit the received second TBS when the encoding method of the obtained transmission block is an LDPC code encoding method based on BG2, and the second TBS is greater than 3,824 bits.
  • the block is divided into multiple code blocks CB; if the size difference between the first TBS and the CB is greater than the preset value, the BG2-based LDPC code encoding method is used to perform channel decoding on the undivided second TBS transport block .
  • the processing unit is specifically configured to transfer the received transmission block of the second TBS when the encoding mode of the obtained transmission block is the BG2 LDPC code coding mode, and the second TBS is greater than 3824 bits. Divide into multiple code blocks CB; use the BG2 based LDPC code encoding method to perform channel decoding on each CB.
  • an information transmission device including:
  • the processing unit is used to determine the coding mode of the transmission block according to the spreading factor, and use the determined coding mode of the transmission block to perform channel coding or decoding.
  • the spreading factor is used to perform channel coding on the transmission block using the first code rate or
  • the first TBS is extended, and the encoding method includes a low-density parity-check LDPC code encoding method based on BG1 and an LDPC code encoding method based on BG2, and the corresponding encoding rates of BG1 and BG2 are different.
  • the processing unit is specifically configured to: when the spreading factor is used to indicate that the first bit rate is expanded, and the first TBS is not expanded, according to the first bit rate and/or the first TBS , To determine the encoding method of the transmission block.
  • the processing unit is specifically configured to determine the encoding mode of the transmission block according to the second code rate and/or the second TBS when the expansion factor is used to indicate the expansion of the first TBS,
  • the second TBS is an expanded TBS, and the second code rate is a code rate determined based on the second TBS.
  • the processing unit is specifically configured to transmit the second TBS to be transmitted when it is determined that the encoding method of the transmission block is an LDPC code encoding method based on BG2 and the second TBS is greater than 3,824 bits.
  • the block is divided into multiple code blocks; if the size difference between the first TBS and the code block is greater than the preset value, the BG2-based LDPC code coding method is used to perform channel coding on the transmission block of the second TBS to be sent.
  • the processing unit is specifically configured to transmit the second TBS to be transmitted when the coding mode of the determined transmission block is the LDPC code coding mode of BG2, and the second TBS is greater than 3824 bits.
  • the block is divided into multiple code blocks CB; the LDPC code coding method based on BG2 is used to perform channel coding on each CB.
  • the processing unit is specifically configured to determine that the encoding method of the transmission block is an LDPC code encoding method based on BG2, and the second TBS is greater than 3,824 bits, to transfer the received transmission block of the second TBS Divide into multiple code blocks CB; if the difference between the size of the first TBS and the CB is greater than the preset value, the BG2-based LDPC code encoding method is used to perform channel decoding on the received transport block of the second TBS.
  • the processing unit is specifically configured to: when the coding mode of the transmission block determined by the communication device is the LDPC coding mode of BG2, and the second TBS is greater than 3824 bits, the processing unit is used to transfer the received second TBS
  • the transmission block is divided into multiple code blocks CB; the LDPC code encoding method based on BG2 is used to perform channel decoding on each CB.
  • the embodiments of the present application provide an information transmission device.
  • the information transmission device may be a first communication device or a component (for example, an integrated circuit, a chip, etc.) of the first communication device.
  • the information transmission device The function corresponding to each step in the method involved in the first aspect described above can be realized, and the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the device includes a processor, and the processor is configured to support the device to perform the corresponding function in the method related to the first aspect.
  • the device may also include a memory, which is used for coupling with the processor and stores program instructions and data necessary for the device.
  • the device further includes a transceiver, which is used to support communication between the device and other network elements.
  • the transceiver may be an independent receiver, an independent transmitter, or a transceiver with integrated transceiver functions.
  • an embodiment of the present application provides an information transmission device.
  • the information transmission device may be a second communication device or a component (for example, an integrated circuit, a chip, etc.) of the second communication device.
  • the information transmission device The function corresponding to each step in the method involved in the above second aspect can be realized, and the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the device includes a processor, and the processor is configured to support the device to perform corresponding functions in the method involved in the second aspect.
  • the device may also include a memory, which is used for coupling with the processor and stores program instructions and data necessary for the device.
  • the device further includes a transceiver, which is used to support communication between the device and other network elements.
  • the transceiver may be an independent receiver, an independent transmitter, or a transceiver with integrated transceiver functions.
  • an embodiment of the present application provides an information transmission device.
  • the information transmission device may be a communication device or a component of a communication device (for example, an integrated circuit, a chip, etc.).
  • the information transmission device can implement the above-mentioned information transmission device.
  • the functions corresponding to the steps in the methods involved in the three aspects may be implemented by hardware or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the device includes a processor, and the processor is configured to support the device to perform corresponding functions in the method involved in the third aspect.
  • the device may also include a memory, which is used for coupling with the processor and stores program instructions and data necessary for the device.
  • an embodiment of the present application provides a communication device.
  • the communication device includes a processor and a transceiver.
  • the processor and the transceiver are used to implement the first aspect or the second aspect or the third aspect.
  • an embodiment of the present application provides an information transmission device.
  • the device exists in the form of a chip product.
  • the structure of the device includes a processor and a memory.
  • the memory is used to couple with the processor and store the necessary
  • the processor is used to execute the program instructions stored in the memory, so that the device executes the functions of the first communication device or the second communication device in the above method.
  • an embodiment of the present application provides an information transmission device, which exists in the form of a chip product.
  • the structure of the device includes a processor and a memory.
  • the memory is used to couple with the processor and store the necessary
  • the processor is used to execute the program instructions stored in the memory, so that the device executes the functions of the communication device in the above method.
  • an embodiment of the present application provides a computer storage medium.
  • the storage medium includes computer instructions. When the instructions are executed by a computer, the computer realizes the first aspect or the second aspect or the third aspect.
  • the information transmission method according to any one of the aspects.
  • an embodiment of the present application provides a computer program product, the program product includes a computer program, the computer program is stored in a readable storage medium, and at least one processor of a communication device can read from the readable storage The medium reads the computer program, and the at least one processor executes the computer program to enable the communication device to implement the information transmission method of any one of the first aspect, the second aspect, or the third aspect.
  • an embodiment of the present application provides a communication system, the system including the first communication device and the second communication device described above.
  • the information transmission method, device, and storage medium provided in the embodiments of the present application determine the encoding mode of the transmission block according to the spreading factor through the first communication device, thereby solving the actual transmission code rate and/or TBS and the first code in channel coding.
  • the spreading factor is used to expand the first code rate or the first TBS used when channel coding the transport block.
  • the methods include the encoding method of LDPC code based on BG1 and the encoding method of LDPC code based on BG2.
  • the encoding rate of BG1 and the corresponding code in Figure 2 are different.
  • the first communication device instructs the determined encoding mode of the transmission block to the second communication device through the indication information.
  • the second communication device obtains the coding mode corresponding to the indication information, and uses the obtained coding mode to perform channel coding or decoding on the transmission block without having to determine the coding mode of the transmission block by itself, thereby reducing the amount of calculation and calculation of the second communication device.
  • Energy consumption prevents the second communication device from taking time to determine the encoding mode, thereby reducing the transmission delay of the system, and then improving the transmission efficiency of the system.
  • FIG. 1 is a schematic diagram of a communication system involved in an embodiment of this application
  • FIG. 2 is a schematic flowchart of an information transmission method provided by an embodiment of this application.
  • FIG. 3 is a schematic diagram of another process of an information transmission method provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of another flow of the information transmission method provided by an embodiment of the application.
  • FIG. 5 is a schematic structural diagram of an information transmission device provided by an embodiment of this application.
  • FIG. 6 is a schematic structural diagram of an information transmission device provided by an embodiment of this application.
  • FIG. 7 is a schematic structural diagram of an information transmission device provided by an embodiment of this application.
  • FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of an information transmission device provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of a communication system provided by an embodiment of this application.
  • B corresponding to A means that B is associated with A.
  • B can be determined according to A.
  • determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the term "plurality” herein refers to two or more.
  • the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the character "/" in this article generally indicates that the associated objects before and after are in an "or” relationship; in the formula, the character "/" indicates that the associated objects before and after are in a "division" relationship.
  • first and second in the description and claims of the present invention and the above-mentioned drawings distinguish the same items or similar items that have substantially the same function and effect. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and order of execution, and words such as “first” and “second” do not limit the difference.
  • Fig. 1 is a schematic diagram of a communication system involved in an embodiment of the application. As shown in Fig. 1, the communication system includes network equipment and terminal equipment, where:
  • a network device is a device in a wireless network, for example, a radio access network (RAN) node that connects a terminal to the wireless network.
  • RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B) B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit) , BBU), or wireless fidelity (Wifi) access point (AP), etc.
  • the network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, which is not limited herein.
  • Terminal device It can be a wireless terminal device or a wired terminal device.
  • a wireless terminal device can refer to a device with wireless transceiver functions. It can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water (Such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, satellites, etc.).
  • the terminal equipment may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control ( Wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation safety (transportation)
  • the wireless terminal equipment in safety), the wireless terminal equipment in a smart city, and the wireless terminal equipment in a smart home (smart home) are not limited here. It can be understood that, in the embodiment of the present application, the terminal device may also be referred to as user equipment (UE).
  • UE user equipment
  • the communication system shown in Figure 1 may be a 2G, 3G, 4G, 5G communication system or a next generation communication system, such as the global system for mobil ecommunications (GSM), code division multiple access (code division multiple access) division multiple access (CDMA) system, time division multiple access (TDMA) system, wideband code division multiple access (WCDMA), frequency division multiple addressing (FDMA) system , Orthogonal frequency-division multiple access (OFDMA) system, single carrier FDMA (SC-FDMA) system, general packet radio service (general packet radio service, GPRS) system, long term evolution, LTE) system, new radio (NR) communication system, etc.
  • GSM global system for mobil ecommunications
  • CDMA code division multiple access
  • TDMA time division multiple access
  • WCDMA wideband code division multiple access
  • FDMA frequency division multiple addressing
  • OFDMA Orthogonal frequency-division multiple access
  • SC-FDMA single carrier FDMA
  • general packet radio service general packet radio service
  • LTE
  • the network device and the terminal device can communicate through a licensed spectrum, or communicate through an unlicensed spectrum, or communicate through a licensed spectrum and an unlicensed spectrum at the same time.
  • the network equipment and terminal equipment can communicate through the frequency spectrum below 6GHz, or communicate through the frequency spectrum above 6GHz, and can also communicate using the frequency spectrum below 6GHz and the frequency spectrum above 6GHz at the same time.
  • the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
  • the embodiments of the present application may be applicable to downlink data transmission, and may also be applicable to uplink data transmission.
  • the sending device is a network device, and the corresponding receiving device is a terminal device.
  • the sending device is a terminal device, and the corresponding receiving device is a network device.
  • the uplink data channel is used to carry uplink data.
  • uplink data For example, physical uplink shared channel (PUSCH).
  • PUSCH physical uplink shared channel
  • the downlink data channel is used to carry downlink data.
  • PDSCH physical downlink shared channel
  • the resources described in the embodiments of the present application are transmission resources, including time domain resources and frequency domain resources, and can be used to carry data or signaling in an uplink communication process or a downlink communication process.
  • transmit/transmission in the embodiments of the present application refers to two-way transmission, including sending and/or receiving actions.
  • the "transmission” in the embodiment of the present application includes the sending of data, the receiving of data, or the sending of data and the receiving of data.
  • the data transmission here includes uplink and/or downlink data transmission.
  • Data may include channels and/or signals.
  • Uplink data transmission means uplink channel and/or uplink signal transmission
  • downlink data transmission means downlink data channel and/or downlink signal transmission.
  • the uplink data channel and the downlink data channel transmit data in units of transmit block (TB), and the size of the TB can be expressed by the transmit block size (TBS), and the unit is bit.
  • TBS transmit block size
  • the LDPC code is a channel coding with very good performance in an additive white Gaussian noise (AWGN) channel, and its performance is very close to the Shannon limit.
  • the parity check matrix H of the LDPC code can be obtained by BG and a shift value.
  • BG usually includes m ⁇ n matrix elements, which can be expressed in the form of a matrix with m rows and n columns, and the value of the matrix elements is 0 or 1.
  • An element with a value of 0 is sometimes called a zero element, which means that the element can be replaced by a z ⁇ z zero matrix; an element with a value of 1 is sometimes called a non-zero element.
  • the communication system defines a base matrix of m ⁇ n.
  • Each element in the base matrix corresponds to the position of each element in BG.
  • the position of the zero element in BG remains unchanged in the base matrix. It is represented by -1, BG
  • the position of a non-zero element with a value of 1 in the i-th row and j-th column in the base matrix does not change, which is represented by the offset value P ij.
  • P ij is an integer greater than or equal to 0, which means that the element with the value of 1 in the i-th row and j-th column can be replaced by the z ⁇ z cyclic permutation matrix corresponding to P ij .
  • the cyclic permutation matrix can be replaced by the z ⁇ z unit
  • the matrix is cyclically shifted to the right P ij times.
  • BG1 and BG2 correspond to different coding rates
  • BG1 corresponds to The coding rate of BG1 is 1/3, and the corresponding coding rate of BG1 is 1/5.
  • the sending device is a terminal device
  • the receiving device may be a network device
  • the sending device is a network device
  • the receiving device may be a terminal device
  • Step 1 The sending device determines the first TBS of the transport block to be sent.
  • the transmitting device determines the first TBS of the transmission block to be transmitted according to the number of scheduled resource units, the first code rate, the modulation mode, and the number of layers of space division multiplexing, which may be specifically as shown in the following formula (1):
  • N info N ⁇ R ⁇ Q m ⁇ v (1)
  • N info represents the first TBS
  • R represents the transmission code rate of the channel, 0 ⁇ R ⁇ 1;
  • Q m represents the number of bits that can be carried on a modulation symbol when the modulation method is used to modulate TB.
  • the modulation method is binary phase shift keying (BPSK)
  • the value of Q m is 1
  • the modulation mode is quadrature phase shift keying (quadrature phase shift keying, QPSK)
  • the value of Q m can be 2
  • the modulation mode is 16 quadrature amplitude modulation (QAM)
  • Q m The value can be 4, etc.
  • v represents the number of layers of space division multiplexing, for example: when v is 1, it means single-layer transmission, and when v is 2, it means two-layer space division multiplexing transmission, etc.;
  • N represents the number of resource units occupied by the transmission TB.
  • the resource unit mentioned here may be the smallest resource granularity unit scheduled in the NR system, for example, a resource element (RE).
  • RE resource element
  • N can be calculated by the following formula (2):
  • N N RV ⁇ (N SC ⁇ N sym -N DM-RS -N oh ) (2)
  • N RB represents the number of scheduled resource blocks (resource blocks, RB)
  • N SC represents the number of subcarriers of each RB
  • N sym represents the number of symbols in a slot
  • N DM-RS represents the slot.
  • DMRS dedicated modulation reference signal
  • Step 2 The sending device determines the TBS of the transmission block to be sent according to the determined first TBS (ie, N info ).
  • the sending device can change the distance in Table 1 below Nearest and greater than or equal to As the TBS of the transport block to be sent.
  • Table 1 shows the quantized value range of TBS when N info ⁇ 3824:
  • index TBS index TBS index TBS index TBS 1 twenty four 25 240 49 808 73 2024 2 32 26 256 50 848 74 2088 3 40 27 272 51 888 75 2152 4 48 28 288 52 928 76 2216 5 56 29 304 53 984 77 2280 6 64 30 320 54 1032 78 2408 7 72 31 336 55 1064 79 2472 8 80 32 352 56 1128 80 2536 9 88 33 368 57 1160 81 2600 10 96 34 384 58 1192 82 2664 11 104 35 408 59 1224 83 2728 12 112 36 432 60 1256 84 2792 13 120 37 456 61 1288 85 2856 14 128 38 480 62 1320 86 2976 15 136 39 504 63 1352 87 3104 16 144 40 528 64 1416 88 3240
  • the sending device can calculate the TBS of the transport block to be sent according to the following formula (5) and the intermediate TBS:
  • the sending device can use the following formula (7) and the intermediate TBS (ie ), calculate the TBS of the transmission block to be sent:
  • Step 3 The sending device determines the encoding mode of the transmission block.
  • the sending device can use Table 2 that characterizes the correspondence between TBS and BG type, and determine whether the TB needs to be sent according to the transmission code rate and the TBS of the transport block to be sent determined in step 2. Divide into multiple code blocks (code blocks, CB), and perform corresponding BG1 or BG2 LDPC coding on each CB obtained after division to obtain a mother code after each CB code.
  • code blocks code blocks, CB
  • Step 4 Add a redundant version.
  • a redundancy version (RV) of the encoded mother code refers to a certain length of bits in the encoded mother code, including a part of system information bits and a part of parity information bits.
  • the current NR system defines the starting position of the RV of the mother code after 4 LDPC encoding and the transmission sequence of the 4 RVs.
  • the transmission sequence of the RV is ⁇ 0,2,3,1 ⁇ , and the transmission sequence is used to characterize the HARQ of each RV. Transmission sequence during retransmission. That is, RV0 is transmitted for the first time, RV2 is transmitted for the first retransmission, RV3 is transmitted for the second retransmission, and RV4 is transmitted for the third retransmission.
  • the sending device can perform rate matching (for example, bit selection and interleaving coding) on each CB-encoded mother code based on the aforementioned RV transmission sequence and the starting position of each RV. , Get the RV currently to be transmitted by each CB.
  • rate matching for example, bit selection and interleaving coding
  • Step 5 The sending device merges the RV currently to be transmitted by each CB to obtain the RV currently to be transmitted by the TB.
  • Step 6 The sending device scrambles and modulates the RV currently to be transmitted by the TB, and then sends it to the receiving device.
  • the receiving device After receiving the RV of the TB, the receiving device will perform corresponding processing such as demodulation, descrambling, and decoding on the RV of the TB. If the decoding is incorrect, the receiving device may send a negative acknowledgement (NACK) to the sending device to instruct the sending device to perform HARQ retransmission on the TB.
  • NACK negative acknowledgement
  • the network device in order to improve the transmission efficiency of the system, the network device indicates an expansion factor to the terminal device, and the terminal device expands the first bit rate or the first TBS of the transmission block according to the expansion factor to achieve refined transmission.
  • the terminal device expands the first bit rate or the first TBS of the transmission block according to the expansion factor to achieve refined transmission.
  • resource waste is reduced and transmission efficiency is improved.
  • the communication device cannot determine whether the coding method of the transmission block is based on sampling.
  • the LDPC code encoding method of BG1 still uses the LDPC code encoding method based on BG2 for channel encoding.
  • the embodiments of the present application provide an information transmission method.
  • channel coding a communication device selects whether to use a BG1-based LDPC code encoding method or a BG2-based LDPC code encoding method according to the spreading factor.
  • Channel coding solves the problem that when the actual transmission code rate and/or TBS is inconsistent with the first code rate and/or first TBS, it is impossible to accurately determine which BG should be used for LDPC channel coding, thereby ensuring the effective transmission of information.
  • Figure 2 is a schematic flow chart of an information transmission method provided by an embodiment of this application.
  • the corresponding second communication device when the first communication device is a network device, the corresponding second communication device is a terminal device, and when the first communication device is a terminal When it is a device, the corresponding second communication device is a network device.
  • the method of the embodiment of the present application includes:
  • the first communication device determines the encoding mode of the transmission block according to the expansion factor.
  • the aforementioned spreading factor is used for spreading the first code rate or the first TBS used when channel coding the transport block.
  • the above-mentioned first code rate may be instructed by the network device to the terminal device.
  • the network device uses the modulation and coding strategy (modulation) in the downlink control information (DCI) carried by the physical downlink control channel (PDCCH). and coding scheme, MCS) field to indicate that the terminal device should use the code rate for PUSCH transmission.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • MCS coding scheme
  • Table 3 shows the possible modulation order and the first code rate value corresponding to the 5-bit index value of the MCS in the DCI:
  • the first communication device is a terminal device, and the terminal device selects the appropriate first bit rate from Table 3 according to the 5-bit MCS index value decoded from the DCI.
  • MCS indicates index 8, so that the terminal device can obtain from Table 3 the first code rate corresponding to index 8 is 602/1024.
  • the first communication device may determine the first TBS according to the number of scheduled resource units, the first code rate, the modulation order, and the number of layers of space division multiplexing. For details, refer to the description of step 1 above, which will not be repeated here.
  • the aforementioned expansion factor may be indicated by the network device to the terminal device.
  • the network device indicates the expansion factor through the first indication information.
  • the first indication information may be carried in first signaling, and the first signaling may be high-layer signaling or physical layer signaling.
  • the high-level signaling mentioned here may refer to the signaling sent by the high-level protocol layer, and the high-level protocol layer is at least one protocol layer above the physical layer.
  • the high-level protocol layer may specifically include at least one of the following protocol layers: medium access control (MAC) layer, radio link control (RLC) layer, packet data convergence protocol (packet data convergence) Protocol, PDCP) layer, radio resource control (RRC) layer, and non-access stratum (NAS).
  • MAC medium access control
  • RLC radio link control
  • PDCP packet data convergence protocol
  • RRC radio resource control
  • NAS non-access stratum
  • the above-mentioned high-level signaling may be, for example, MAC signaling, RLC signaling, PDCP signaling, RRC signaling, or NAS signaling.
  • the first signaling is physical layer signaling
  • the first signaling may be a PDCCH that carries DCI.
  • the first indication information may be carried in the DCI.
  • the value of the expansion factor may be an integer type or a decimal type.
  • the expansion factor can expand the first code rate or the first TBS by an integer multiple.
  • the value of the expansion factor is a decimal type, the expansion factor can expand the first code rate or the first TBS by a fractional multiple. Therefore, the above-mentioned integer type expansion factor may also be referred to as a radical type expansion factor, and the above-mentioned decimal type expansion factor may also be referred to as a moderate type expansion factor.
  • the value of the expansion factor ⁇ when the value of the expansion factor ⁇ is an integer greater than 1, the value of the expansion factor ⁇ may be as shown in the following formula (8);
  • the value of the expansion factor ⁇ may be any value of 2, 3, 4, 5, etc., for example.
  • the network device may indicate the expansion factor ⁇ through the following two-bit field.
  • this field may be a scaling factor field in the DCI.
  • the value of the expansion factor ⁇ is a decimal type greater than 1, the value of the expansion factor ⁇ can be as shown in the following formula (9):
  • the network device may occupy a two-bit field as follows: Indicates the expansion factor ⁇ .
  • this field may be a scaling factor field in the DCI.
  • a suitable value can be selected according to current channel conditions, spectral efficiency requirements, etc., to appropriately expand the first code rate and/or the first TBS.
  • the coding modes in the embodiments of the present application include: an LDPC code coding mode based on BG1 and an LDPC code coding mode based on BG2.
  • the coding rate corresponding to BG1 and BG2 are different.
  • the coding rate corresponding to BG1 is 1/3 of the channel coding rate, that is, the transmission of 100 bits of information bits will be LDPC encoded to 300 bits.
  • the coding rate corresponding to BG1 is 1/5 of the channel coding rate, that is, 100bit information bit transmission will be LDPC coded to 500bit.
  • the spreading factor is used to expand the first code rate and/or the first TBS.
  • the encoding mode of the transmission block determined by the first communication device is also different.
  • the first communication device determines the encoding mode of the transmission block according to the expansion factor, including the following situations:
  • the first communication device determines the encoding mode of the transmission block according to the first code rate and/or the first TBS in the case that the expansion factor is used to indicate the expansion of the first code rate, and the first TBS is not expanded.
  • the encoding of the transport block is LDPC encoding based on BG2. In other cases, it is determined that the encoding method of the transport block is the LDPC encoding method based on BG1.
  • Case 2 When the expansion factor is used to indicate the expansion of the first TBS, the first communication device determines the encoding mode of the transmission block according to the second code rate and/or the second TBS, where the second TBS is For the expanded TBS, the second bit rate is a bit rate determined based on the second TBS.
  • the first communication device first uses the expansion factor to expand the first TBS, and records the expanded first TBS as the second TBS, which may be specifically shown in the following formula (10):
  • N'info N info ⁇ (10)
  • N'info is the second TBS
  • N info is the first TBS
  • ⁇ is the expansion factor
  • the first communication device determines the second code rate according to the second TBS obtained above, the number of resource units, the modulation order, and the number of layers of space division multiplexing, as shown in formula (11):
  • R 2 is the second code rate
  • N'info is the second TBS
  • Qm is the modulation order
  • v is the number of layers of space division multiplexing
  • N is the number of resource units occupied by the transmission TB. quantity.
  • the first communication device determines the second TBS through the above formula (10), and determines the second code rate through the above formula (11).
  • the first communication device determines the coding mode of the transmission block according to the spreading factor, for example, the first A communication device determines the encoding mode of the transmission block according to the first code rate and/or the first TBS when the expansion factor is used to indicate the expansion of the first bit rate and does not extend the first TBS.
  • the first communication device In the case where the expansion factor is used to indicate the expansion of the first TBS, the coding mode of the transmission block is determined according to the second code rate and/or the second TBS, thereby solving the actual transmission code rate and/or TBS and When the first code rate and/or the first TBS are inconsistent, it is impossible to accurately determine which basic picture should be selected for the LDPC channel coding, so as to ensure the effective transmission of information.
  • the first communication device sends the indication information of the encoding mode to the second communication device.
  • the above indication information is used to indicate the coding mode of the transport block.
  • the first communication device in the embodiment of the present application determines the encoding mode of the transmission block according to the spreading factor, and then instructs the determined encoding mode to the second communication device, so that the second communication device does not need to determine it by itself when performing channel encoding or decoding.
  • the encoding method of the transmission block further reduces the calculation amount and energy consumption of the second communication device, and at the same time avoids the time spent by the second communication device in determining the encoding method, reduces the transmission delay of the system, and then improves the transmission efficiency of the system.
  • the indication information of the foregoing encoding method may be carried in second signaling, which may be high-level signaling or physical layer signaling.
  • the high-level signaling mentioned here may be, for example, MAC signaling. Command, RLC signaling, PDCP signaling, RRC signaling or NAS signaling.
  • the second signaling is physical layer signaling
  • the second signaling may be a PDCCH that carries DCI.
  • the indication information of the coding mode may be carried in the DCI.
  • the indication information of the foregoing encoding mode may be carried in the foregoing first signaling, that is, the indication information of the expansion factor and the encoding mode in the embodiment of the present application may be carried in the same signaling.
  • the indication information of the foregoing encoding manner may include identification information of the encoding manner.
  • the first communication device and the second communication device have pre-stored the corresponding relationship between the identification information of the encoding manner and the encoding manner.
  • the correspondence between the identification information of the coding mode and the coding mode may be as shown in Table 6 below:
  • identification information of the coding method shown in Table 6 above is just an example.
  • the identification information of the coding method includes but is not limited to the number 1 and the number 2. For example, it can also be other numbers. , Or letters, or special symbols, and special graphics, etc., this application does not limit this.
  • the first communication device may indicate the identification information of the encoding mode through a field occupying two bits as follows.
  • the first communication device may indicate the identification information through a field in DCI or RRC signaling.
  • the above-mentioned field may be a newly added DCI field or RRC field, or may be a reserved state value of an existing field in DCI or RRC.
  • this field may be a scaling factor field in the DCI.
  • the first communication device carries the identification information of the encoding method in the instruction information and sends it to the second communication device, so that the second communication device obtains the identification information of the encoding method carried in the instruction information, and then according to Table 6.
  • the indication information of the foregoing coding mode may include the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block.
  • the aforementioned coding rate and/or TBS identification information is used to identify whether the first communication device uses the first bit rate and/or the first transmission block when determining the coding mode of the transmission block, or whether it uses the second bit rate and /Or the second transfer block.
  • the first communication device and the second communication device have pre-stored the corresponding relationship between the coding code rate and/or the identification information of the TBS and the coding code rate and/or the TBS.
  • the corresponding relationship between the coding rate and/or TBS identification information and the coding rate and/or TBS may be as shown in Table 8 below:
  • Encoding rate and/or TBS identification information Encoding rate and/or TBS 3 First bit rate and/or first TBS 4 Second bit rate and/or second TBS
  • the coding rate and/or TBS identification information shown in Table 8 is just an example of the number 3 and number 4.
  • the coding rate and/or TBS identification information includes but is not limited to the number 3 and The number 4, for example, can also be other numbers, or letters, or special symbols, and special graphics, etc., which is not limited in this application.
  • the first communication device may indicate the coding rate and/or identification information of the TBS through a field occupying two bits as follows.
  • the first communication device may indicate the identification information through a field in DCI or RRC signaling .
  • the aforementioned field may be a newly added DCI field or RRC field, or may be a redundant state value of an existing field in the DCI or RRC.
  • this field may be a scaling factor field in the DCI.
  • the first communication device carries the coding rate and/or the identification information of the TBS in the indication information and sends it to the second communication device, so that the second communication device parses the indication information and obtains the indication information carried Encoding rate and/or TBS identification information.
  • the second communication device obtains the encoding rate and/or the TBS corresponding to the identification information of the TBS.
  • the coding code rate and/or TBS identification information carried in the indication information is 3
  • the second communication device refers to Table 2
  • the indication information carries
  • the coding code rate and/or the identification information of the TBS is 4
  • the second communication device refers to Table 2 and determines the coding mode of the transmission block according to the second code rate and/or the second TBS.
  • the indication information of the foregoing encoding mode may include the function identification information of the expansion factor.
  • the function identification information of the aforementioned expansion factor is used to identify the function of the expansion factor.
  • the function of the expansion factor includes two types. The first is to expand the first TBS, and the second is to expand the first bit rate. The first TBS does not expand.
  • the function identification information with different expansion factors indicates that the objects of expansion factor expansion are different.
  • the first communication device determines that the encoding mode of the transmission block is different according to the expansion factor, for example, when The expansion factor is used to expand the first code rate.
  • the first communication device determines the encoding mode of the transmission block according to the first code rate and/or the first TBS.
  • the expansion factor is used to expand the first TBS.
  • the first communication device determines the encoding mode of the transport block according to the second code rate and/second TBS.
  • the function identification information of the spreading factor has a corresponding relationship with the function of the spreading factor and the coding rate and/or TBS.
  • the first communication device and the second communication device pre-store the function identification information of the expansion factor, the function of the expansion factor, the coding rate and/or the TBS in a corresponding relationship.
  • the function identification information of the expansion factor, the function of the expansion factor and the coding rate and/or TBS have a corresponding relationship as shown in Table 10 below:
  • function identification information of the expansion factor shown in Table 10 above is just an example.
  • the function identification information of the expansion factor includes but is not limited to the number 5 and the number 6.
  • it can also be other The number, or letters, or special symbols, and special graphics, etc., are not restricted in this application.
  • the first communication device may indicate the function identification information of the expansion factor through a field occupying two bits as follows.
  • the first communication device may indicate the identification information through a field in DCI or RRC signaling.
  • the aforementioned field may be a newly added DCI field or RRC field, or may be a redundant state value of an existing field in the DCI or RRC.
  • this field may be a scaling factor field in the DCI.
  • the first communication device carries the function identification information of the expansion factor in the instruction information and sends it to the second communication device, so that the second communication device parses the instruction information and obtains the index of the expansion factor carried by the instruction information.
  • Function identification information Based on Table 10, the second communication device obtains the coding rate and/or TBS corresponding to the function identification information of the expansion factor. For example, when the function identification information of the expansion factor carried in the indication information is 5, the second communication device refers to Table 2, and determines the encoding mode of the transmission block according to the first code rate and/or the first TBS. When the expansion factor carried in the indication information is When the function identification information is 6, the second communication device refers to Table 2, and determines the encoding mode of the transmission block according to the second code rate and/or the second TBS.
  • the second communication device obtains an encoding mode corresponding to the indication information.
  • the second communication device After receiving the instruction information from the first communication device, the second communication device parses the instruction information, obtains the content carried by the instruction information, and obtains the encoding mode of the transmission block according to the content.
  • the second communication device obtains the encoding manner corresponding to the identification information of the encoding manner. For example, when the identification information of the coding mode included in the indication information is parameter 1, the second communication device obtains the coding mode of the transmission block as the LDPC code coding mode based on BG1 according to the above table 6, for example, the identification information of the coding mode included in the indication information When it is parameter 2, the second communication device obtains the coding mode of the transmission block as the LDPC code coding mode based on BG2 according to the above-mentioned Table 6.
  • the second communication device obtains the coding rate included in the indication information. And/or the identification information of the TBS, the corresponding encoding rate and/or TBS, and obtaining the encoding mode of the transport block based on the obtained encoding rate and/or TBS.
  • the coding rate and/or the identification information of the TBS included in the indication information is parameter 3. According to Table 8, the parameter 3 corresponds to the first TBS and/or the first bit rate.
  • the second communication device can be based on the first TBS and / Or the first code rate to obtain the encoding mode of the transport block.
  • the coding code rate and/or TBS identification information included in the indication information is parameter 4, which corresponds to the second TBS and/or the second code rate, so that the second communication device can use the second TBS and/or the second code rate.
  • Two code rates are used to obtain the encoding mode of the transport block.
  • the second communication device obtains the encoding mode of the transmission block according to the expansion factor corresponding to the function identification information of the expansion factor.
  • the function identification information of the expansion factor included in the indication information is parameter 5.
  • the function of the expansion factor corresponding to parameter 5 is to expand the first bit rate and not expand the first TBS, so that the second communication device
  • the coding mode of the transport block can be obtained according to the first TBS and/or the first code rate.
  • the function identification information of the expansion factor included in the indication information is parameter 6.
  • the function of the expansion factor corresponding to the parameter 6 is to expand the first TBS, so that the second communication device can expand according to the second TBS and/or
  • the second code rate is to obtain the encoding mode of the transmission block.
  • the first communication device informs the second communication device of the encoding mode of the determined transmission block through the instruction information, so that the second communication device obtains the encoding mode corresponding to the instruction information, which not only ensures that the first communication device It is consistent with the coding mode adopted by the second communication device in channel coding or decoding, which improves the reliability of information transmission.
  • the second communication device uses the coding mode indicated by the first communication device to perform channel coding or decoding, without having to determine the coding mode of the transmission block by itself, thereby reducing the calculation amount and energy consumption of the second communication device and avoiding the second communication device It takes time to determine the encoding method, thereby reducing the transmission delay of the system, and then improving the transmission efficiency of the system.
  • the first communication device is a network device and the second communication device is a terminal device
  • the network device detects that the data processing capability of the terminal device is low, it determines for the terminal device according to the above S101 method.
  • the coding mode of the transmission block is indicated, and the determined coding mode of the transmission block is indicated to the terminal device through the indication information.
  • the terminal device can directly obtain the coding mode of the transmission block through the instruction information sent by the network device, without self-calculation, thereby improving the efficiency of uplink scheduling.
  • the second communication device uses the obtained coding mode to perform channel coding or decoding on the transmission block.
  • the second communication device obtains the encoding mode of the transport block according to the above step S103, and uses the obtained encoding mode to perform channel encoding or decoding on the transport block. For example, use the obtained encoding method of the transport block to decode the transport block received from the first communication device, or use the obtained encoding method of the transport block to perform channel encoding on the transport block to be sent, and transmit the encoded transmission block. The block is sent to the first communication device.
  • the first communication device determines the coding mode of the transmission block according to the spreading factor, thereby solving the actual transmission code rate and/or TBS and the first code rate and/or the first code rate When the TBS is inconsistent, it is impossible to accurately determine which basic picture should be selected for LDPC channel coding.
  • the spreading factor is used to expand the first code rate or the first TBS used when channel coding the transport block.
  • the coding method includes LDPC based on BG1.
  • the code encoding method and the LDPC code encoding method based on BG2 have different encoding rates for BG1 and BG2.
  • the first communication device instructs the determined encoding mode of the transmission block to the second communication device through the indication information.
  • the second communication device obtains the coding mode corresponding to the indication information, and uses the obtained coding mode to perform channel coding or decoding on the transmission block without having to determine the coding mode of the transmission block by itself, thereby reducing the amount of calculation and calculation of the second communication device.
  • Energy consumption prevents the second communication device from taking time to determine the encoding mode, reduces the transmission delay of the system, and then improves the transmission efficiency of the system.
  • the following focuses on the information transmission process between the first communication device and the second communication device when the expansion factor expands the first TBS.
  • FIG. 3 is a schematic diagram of another flow of an information transmission method provided by an embodiment of the application. As shown in FIG. 3, the method of the embodiment of the present application includes:
  • the first communication device determines the coding mode of the transmission block according to the second code rate and/or the second TBS when the expansion factor is used to indicate the expansion of the first TBS.
  • the first communication device expands the first TBS according to the expansion factor to obtain the second TBS
  • the specific process for the first communication device to determine the second code rate according to the second TBS can refer to the description of S101 in Case 2 above. This will not be repeated here.
  • the first communication device sends the indication information of the encoding mode to the second communication device.
  • the indication information is used to indicate the encoding mode of the transport block.
  • the first communication device uses the determined encoding mode of the transmission block to perform channel encoding or decoding on the transmission block.
  • S202 and S203 are not executed in succession.
  • S203 may be executed after S202, or S203 may be executed before S202, or S203 and S202 may be executed simultaneously.
  • the transmission block to be sent in the embodiment of this application is a transmission block after source coding.
  • the first communication device uses Huffman coding, arithmetic coding, LZ coding and other source coding methods to perform source coding on the transmission block to be sent to Redundant information is reduced, so that the transmission block to be sent can be transmitted more cost-effectively.
  • the first communication device uses the determined encoding mode of the transmission block, and performing channel encoding on the transmission block to be sent may include the following situations:
  • the encoding method of the transmission block determined by the first communication device is the LDPC code encoding method based on BG1.
  • the first communication device does not need to divide the transmission block to be sent, and uses the BG1 based encoding method.
  • the LDPC code encoding method performs channel encoding on the undivided second TBS transport block.
  • the second TBS is greater than 8424 bits, the first communication device divides the transmission block to be sent into multiple CBs, and uses the BG1-based LDPC code encoding method to perform channel encoding on each CB.
  • the encoding method of the transmission block determined by the first communication device is the LDPC code encoding method based on BG2.
  • the first communication device does not need to divide the transmission block to be sent, and uses the BG2-based encoding method.
  • the LDPC code encoding method performs channel encoding on the undivided second TBS transport block.
  • the method of channel encoding the transport block to be sent by the first communication device includes but is not limited to The following types:
  • the first communication device divides the transmission block of the second TBS to be sent into multiple CBs, and uses the BG2-based LDPC code coding mode to perform channel coding on each CB.
  • the first communication device expands the size of the transmission block from the first TBS to the second TBS according to the expansion factor, and if the second TBS is greater than 3,824 bits, the transmission block of the second TBS is divided into multiple CBs. Then, the first communication device uses the BG2-based LDPC code encoding method to perform channel coding on each CB, performs rate matching on each coded CB according to the second code rate, and performs cascading and modulation on the rate-matched CBs. After processing, it is sent to the second communication device.
  • the first TBS is 3240 bits
  • the expansion factor used to expand the first TBS is 1.5
  • the first communication device encodes each CB using an LDPC code encoding method based on BG2. Perform rate matching on each encoded CB according to the second code rate, perform processing such as cascading and modulation on the rate-matched CB, and then send it to the second communication device.
  • the first communication device divides the transmission block of the second TBS to be sent into multiple CBs. If the size difference between the first TBS and the CB is greater than the preset value, the first communication device uses the LDPC code based on BG2 Coding mode, channel coding is performed on the undivided second TBS transport block.
  • the first communication device expands the size of the transmission block from the first TBS to the second TBS according to the expansion factor. If the second TBS is greater than 3,824 bits, the transmission block of the second TBS is first divided into multiple CBs. The first communication device compares the size of the CB with the first TBS, and if the difference between the size of the first TBS and the CB is greater than the preset value, in order to avoid performance loss caused by the transmission of small packets, the second TBS is not encoded during channel coding. The transmission block of the second TBS is divided, but the entire transmission block of the second TBS is used as the coding unit for channel coding.
  • the foregoing preset value may be a specific number, for example, 500 bits.
  • the foregoing preset value may also be a percentage. For example, when the difference between the size of the first TBS and the CB is greater than 50% of the size of the CB, CB segmentation is not performed.
  • the preset value is 500 bits
  • the first TBS is 3240 bits
  • the expansion factor used to expand the first TBS is 1.5
  • CRC cyclic redundancy check
  • the 4860-bit TB is not divided, but the LDPC code based on BG2 is used.
  • the encoding method directly encodes the 4860-bit transport block. Then, the encoded transmission block of the second TBS is rate-matched according to the second code rate, and the rate-matched transmission block is modulated and sent to the second communication device.
  • the first communication device can flexibly select the above-mentioned mode 1 or mode 2 based on the transmission requirements.
  • the transmission requirements For channel coding, for example, when method 1 is used for channel coding, the storage space and coding complexity of the buffer of each encoder can be reduced, and when method 2 is used for channel coding, the performance loss caused by small packet transmission can be reduced.
  • the first communication device uses the determined encoding mode of the transmission block to perform channel decoding on the received transmission block, including the following situations:
  • the encoding method of the transmission block determined by the first communication device is the LDPC code encoding method based on BG1.
  • the first communication device does not need to divide the received transmission block, and uses the BG1-based LDPC code encoding method.
  • the LDPC code encoding method performs channel decoding on the undivided second TBS transport block.
  • the second TBS is greater than 8424, the first communication device divides the received transport block into multiple CBs, and uses the BG1-based LDPC code encoding method to perform channel decoding on each CB.
  • the encoding method of the transmission block determined by the first communication device is an LDPC code encoding method based on BG2.
  • the first communication device does not need to divide the received transmission block, and uses the BG2-based encoding method.
  • the LDPC code encoding method performs channel decoding on the undivided second TBS transport block.
  • the encoding method of the transport block determined by the first communication device is an LDPC code encoding method based on BG2.
  • the method for the first communication device to perform channel decoding on the received transport block includes but not Limited to the following:
  • the first communication device divides the received transport block of the second TBS into multiple CBs, and uses the BG2-based LDPC code encoding method to perform channel decoding on each CB.
  • the first communication device receives the transmission block of the second TBS from the second communication device, and if the second TBS is greater than 3,824 bits, the received transmission block of the second TBS is divided into multiple CBs.
  • the first communication device uses the second coding rate to perform rate-de-matching on each divided CB, and performs channel decoding on each of the de-rate-matched CBs according to the LDPC code encoding method based on BG2.
  • the first TBS is 3240 bits
  • the size of the transmission block received by the first communication device from the second communication device is the second TBS
  • the first communication device uses the second code rate to perform rate de-matching on each CB, and performs channel decoding on each CB after de-rate matching according to the LDPC code encoding method based on BG2.
  • the first communication device divides the received transmission block of the second TBS into multiple CBs. If the size difference between the first TBS and the CB is greater than the preset value, the first communication device uses the BG2-based LDPC code encoding In this way, channel decoding is performed on the undivided transport block of the second TBS.
  • the first communication device receives the transmission block of the second TBS from the second communication device, and if the second TBS is greater than 3,824 bits, the received transmission block of the second TBS is divided into multiple CBs.
  • the first communication device compares the size of the CB with the first TBS, and if the difference between the size of the first TBS and the CB is greater than the preset value, the first communication device uses the second bit rate to transmit the undivided second TBS
  • the blocks are de-rate-matched, and the transmission block of the second TBS after de-rate-matching is channel-decoded according to the BG2-based LDPC code encoding method.
  • the preset value is 500 bits
  • the first TBS is 3240 bits
  • the size of the transmission block received by the first communication device from the second communication device is the second TBS
  • the first communication device does not divide the received transmission block of the second TBS, but uses the second bit rate to receive Perform rate de-matching on the entire transmission block of the second TBS, and decode the de-rate-matched transmission block of the second TBS according to the LDPC code encoding method based on BG2.
  • the first communication device in the case that the determined encoding mode of the transmission block is the LDPC code encoding mode of BG2, and the second TBS is greater than 3824 bits, the first communication device can flexibly select the above-mentioned mode 1 or mode 2 based on the transmission requirements.
  • Channel decoding for example, when method 1 is used for channel decoding, the buffer space and decoding complexity of the decoder can be reduced, thereby increasing the decoding efficiency.
  • method 2 is used for channel decoding, the transmission of small packets can be reduced. Performance loss.
  • the second communication device obtains an encoding mode corresponding to the indication information.
  • the second communication device uses the obtained coding mode to perform channel coding or decoding on the transmission block.
  • the second communication device uses the obtained coding method to perform channel coding on the transmission block to be sent, including the following situations:
  • the encoding method of the transmission block obtained by the second communication device is the LDPC code encoding method based on BG1.
  • the second TBS is less than or equal to 8424 bits
  • the second communication device does not need to divide the transmission block to be sent, and uses the BG1-based LDPC code encoding method.
  • the LDPC code encoding method performs channel encoding on the undivided second TBS transport block.
  • the second TBS is greater than 8424 bits, the second communication device divides the transmission block to be sent into multiple CBs, and uses the BG1-based LDPC code coding method to perform channel coding on each CB.
  • the encoding method of the transmission block obtained by the second communication device is an LDPC code encoding method based on BG2.
  • the second TBS is less than or equal to 3824 bits
  • the second communication device does not need to divide the transmission block to be sent, and uses the BG2-based encoding method.
  • the LDPC code encoding method performs channel encoding on the undivided second TBS transport block.
  • the encoding method of the transport block obtained by the second communication device is an LDPC code encoding method based on BG2.
  • the method of channel encoding the transport block to be sent by the second communication device includes but is not limited to The following types:
  • the second communication device divides the transmission block of the second TBS to be sent into multiple CBs, and uses the BG2-based LDPC code coding mode to perform channel coding on each CB.
  • the second communication device divides the transmission block of the second TBS to be sent into multiple CBs. If the size difference between the first TBS and the CB is greater than the preset value, the second communication device uses the LDPC code based on BG2 Coding mode, channel coding is performed on the undivided second TBS transport block.
  • the second communication device uses the obtained encoding method to perform channel decoding on the received transport block, including the following situations:
  • the encoding method of the transmission block obtained by the second communication device is the LDPC code encoding method based on BG1.
  • the second TBS is less than or equal to 8424 bits
  • the second communication device does not need to divide the received transmission block, and uses the BG1-based LDPC code encoding method.
  • the LDPC code encoding method performs channel decoding on the undivided second TBS transport block.
  • the second TBS is greater than 8424 bits, the second communication device divides the received transport block into multiple CBs, and uses the BG1-based LDPC code encoding method to perform channel decoding on each CB.
  • the encoding method of the transmission block obtained by the second communication device is an LDPC code encoding method based on BG2.
  • the second TBS is less than or equal to 3824 bits
  • the second communication device does not need to divide the received transmission block and uses the BG2-based encoding method.
  • the LDPC code encoding method performs channel decoding on the undivided second TBS transport block.
  • the encoding method of the transport block obtained by the second communication device is an LDPC code encoding method based on BG2.
  • the method for the second communication device to perform channel decoding on the received transport block includes but not Limited to the following:
  • the second communication device divides the received transmission block of the second TBS into multiple code blocks CB, and uses the BG2 based LDPC code encoding method to perform channel decoding on each CB.
  • the second communication device divides the received transmission block of the second TBS into multiple CBs. If the size difference between the first TBS and the CB is greater than the preset value, the second communication device uses the BG2-based LDPC code encoding In this way, channel decoding is performed on the undivided transport block of the second TBS.
  • the first communication device or the second communication device adopts the above two methods in channel encoding.
  • the above two methods are also used for channel decoding, so that the first communication device or the second communication device can flexibly select the channel coding or decoding method based on the transmission requirements.
  • method 1 is used for channel encoding or decoding
  • the buffer space of the encoder or decoder and the complexity of encoding or decoding can be reduced.
  • method 2 is used for channel encoding or decoding, it can avoid the occurrence of small packet transmission. The performance loss.
  • the embodiment of the present application proposes another information transmission method.
  • the difference between the embodiment of the present application and the foregoing embodiment is that the first communication device and the The second communication device respectively determines the coding mode of the transmission block according to the spreading factor, instead of the first communication device instructing the determined coding mode to the second communication device through the indication information.
  • the embodiments of this application are described by taking the first communication device as the sending end and the second communication device as the receiving end as an example.
  • the information transmission process is the same as this application.
  • the embodiments are basically the same, just refer to.
  • FIG. 4 is a schematic diagram of another process of an information transmission method provided by an embodiment of this application. As shown in FIG. 4, the method of the embodiment of the present application includes:
  • the first communication device determines the encoding mode of the transmission block according to the expansion factor.
  • the first communication device determines the encoding mode of the transmission block according to the first code rate and/or the first TBS in the case that the expansion factor is used to indicate the expansion of the first code rate, and the first TBS is not expanded, In the case where the expansion factor is used to indicate the expansion of the first TBS, the coding mode of the transport block is determined according to the second code rate and/or the second TBS, and the second TBS is the expanded TBS.
  • the first communication device uses the determined encoding mode of the transport block to perform channel encoding on the transport block to be sent.
  • Method 1 When it is determined that the encoding method of the transport block is the LDPC code encoding method based on BG2, and the second TBS is greater than 3824 bits, the first communication device divides the transport block of the second TBS to be sent into multiple CBs; if The difference between the size of the first TBS and the CB is greater than the preset value, and the first communication device uses the BG2-based LDPC code encoding method to perform channel encoding on the undivided transmission block of the second TBS.
  • Manner 2 When the determined coding mode of the transport block is the BG2 LDPC code coding mode, and the second TBS is greater than 3824 bits, the first communication device divides the transmission block of the second TBS to be sent into multiple CBs; A communication device uses a BG2-based LDPC code encoding method to perform channel encoding on each CB.
  • the first communication device can flexibly select the above-mentioned mode 1 or mode 2 based on the transmission requirements.
  • the buffer space and coding complexity of the encoder can be reduced, and when method 2 is used for channel coding, the performance loss caused by small packet transmission can be reduced.
  • the first communication device sends the channel-coded transmission block to the second communication device.
  • the second communication device determines the coding mode of the transmission block according to the expansion factor.
  • the second communication device After receiving the transmission block from the first communication device, the second communication device determines the encoding mode of the transmission block according to the spreading factor.
  • the second communication device determines the coding mode of the transport block according to the first bit rate and/or the first TBS in the case that the expansion factor is used to indicate the first bit rate is expanded, and the first TBS is not expanded, In the case where the expansion factor is used to indicate the expansion of the first TBS, the coding mode of the transport block is determined according to the second code rate and/or the second TBS.
  • the implementation of this application further includes the step of the first communication device indicating the expansion factor and the first code rate to the second communication device.
  • the second communication device uses the determined encoding mode of the transport block to perform channel decoding on the received transport block.
  • Method 1 When it is determined that the encoding method of the transport block is the LDPC code encoding method based on BG2, and the second TBS is greater than 3824 bits, the second communication device divides the received transport block of the second TBS into multiple CBs; If the difference between the size of a TBS and the CB is greater than the preset value, the second communication device uses the BG2-based LDPC code encoding method to perform channel decoding on the undivided transport block of the second TBS.
  • Manner 2 In the case that the determined coding mode of the transport block is the BG2 LDPC code coding mode, and the second TBS is greater than 3,824 bits, the second communication device divides the received transport block of the second TBS into multiple CBs; first The communication device uses the BG2-based LDPC code encoding method to perform channel decoding on each CB.
  • the second communication device in the case that the determined encoding mode of the transport block is the BG2 LDPC code encoding mode, and the second TBS is greater than 3824 bits, the second communication device can flexibly select the above-mentioned mode 1 or mode 2 based on the transmission requirements.
  • Channel decoding for example, when method 1 is used for channel decoding, the buffer space and decoding complexity of the decoder can be reduced, and when method 2 is used for channel decoding, the performance loss caused by small packet transmission can be reduced.
  • both the first communication device and the second communication device determine the encoding mode of the transmission block according to the spreading factor, which solves the problem of the actual transmission rate and/or code rate in channel encoding.
  • the TBS is inconsistent with the first code rate and/or the first TBS, it is impossible to accurately determine which basic picture should be selected for the LDPC channel coding, so as to ensure the effective transmission of information.
  • FIG. 5 is a schematic structural diagram of an information transmission device provided by an embodiment of this application.
  • the information transmission device may be a first communication device, or a component of the first communication device (for example, an integrated circuit, a chip, etc.).
  • the information transmission device 200 may include: a processing unit 210 and a sending device. Unit 220;
  • the processing unit 210 is configured to determine a coding mode of a transmission block according to a spreading factor, where the spreading factor is used to expand a first code rate or a first TBS used when channel coding the transmission block, and the coding mode includes The BG1-based LDPC code encoding method and the BG2-based LDPC code encoding method, the coding rate corresponding to the BG1 and the BG2 is different;
  • the sending unit 220 is configured to send indication information of the coding mode to the second communication device, where the indication information is used to indicate the coding mode of the transmission block.
  • the indication information includes identification information of the encoding method.
  • the indication information includes the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block; or,
  • the indication information includes function identification information of the expansion factor.
  • the processing unit 210 determines the encoding manner of the transmission block according to the expansion factor, including the following two manners:
  • the processing unit 210 is specifically configured to, when the expansion factor is used to indicate that the first bit rate is expanded, and the first TBS is not expanded, according to the first bit rate and/or The first TBS determines the coding mode of the transport block.
  • the processing unit 210 is specifically configured to determine the transmission block of the transmission block according to the second code rate and/or the second TBS when the expansion factor is used to indicate the expansion of the first TBS.
  • the second TBS is an expanded TBS
  • the second code rate is a code rate determined based on the second TBS.
  • the processing unit 210 performs channel coding methods including but not limited to the following:
  • the processing unit 210 is further configured to determine that the coding mode of the transport block is the LDPC code coding mode based on the BG2, and the second TBS is greater than 3824 bits, to send the The transmission block of the second TBS is divided into multiple CBs; if the size difference between the first TBS and the CB is greater than a preset value, the LDPC code encoding method based on the BG2 is used for the undivided
  • the transport block of the second TBS is channel-coded.
  • the processing unit 210 is further configured to: if the determined coding mode of the transport block is the BG2 LDPC code coding mode, and the second TBS is greater than 3824 bits, send the The transmission block of the second TBS is divided into multiple CBs; the LDPC code coding method based on the BG2 is used to perform channel coding on each CB.
  • the processing unit 210 performs channel decoding methods including but not limited to the following:
  • the processing unit 210 is further configured to determine that the coding mode of the transport block is an LDPC code coding mode based on the BG2, and the second TBS is greater than 3824 bits, to perform the received first
  • the transmission block of the two TBS is divided into multiple code blocks CB; if the size difference between the first TBS and the CB is greater than the preset value, the LDPC code encoding method based on the BG2 is used for all undivided code blocks.
  • Channel decoding is performed on the transport block of the second TBS.
  • the processing unit 210 is further configured to: if the determined coding mode of the transport block is the BG2 LDPC code coding mode, and the second TBS is greater than 3824 bits, the received first
  • the transmission block of the two TBS is divided into multiple code blocks CB; the LDPC code encoding method based on the BG2 is used to perform channel decoding on each CB.
  • the information transmission apparatus in the embodiments of the present application may be used to implement the technical solutions of the first communication device in the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 6 is a schematic structural diagram of an information transmission device provided by an embodiment of the application.
  • the information transmission device may be a second communication device, or a component of the second communication device (for example, an integrated circuit, a chip, etc.).
  • the information transmission device 300 may include: a receiving unit 310 and a processing device. Unit 320;
  • the receiving unit 310 is configured to receive instruction information from the first communication device, where the instruction information is used to indicate the encoding mode of the transmission block;
  • the processing unit 320 is configured to obtain a coding mode corresponding to the indication information, and use the obtained coding mode to perform channel coding or decoding on the transmission block, and the coding mode includes a low-density parity check based on BG1
  • the LDPC code encoding method and the LDPC code encoding method based on BG2 have different encoding rates corresponding to the BG1 and the BG2.
  • the indication information includes identification information of the encoding method.
  • the indication information includes the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block; or,
  • the indication information includes function identification information of the expansion factor.
  • the indication information includes the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block.
  • the processing unit 320 is specifically configured to Obtain the encoding mode of the transmission block according to the encoding rate and/or the encoding rate and/or TBS corresponding to the identification information of the TBS.
  • the indication information includes function identification information of the expansion factor
  • the processing unit 320 is specifically configured to obtain the encoding mode of the transmission block according to the expansion factor corresponding to the function identification information of the expansion factor
  • the spreading factor is used to spread the first code rate or the first TBS used when performing channel coding on the transport block.
  • the processing unit 320 determines the coding mode of the transmission block according to the expansion factor, including the following two modes:
  • the processing unit 320 is specifically configured to, when the expansion factor is used to indicate that the first bit rate is expanded, and the first TBS is not expanded, according to the first bit rate and/or The first TBS obtains the encoding mode of the transport block.
  • the processing unit 320 is specifically configured to obtain the transmission block data according to the second code rate and/or the second TBS when the expansion factor is used to indicate the expansion of the first TBS.
  • the second TBS is an expanded TBS
  • the second code rate is a code rate determined based on the second TBS.
  • the processing unit 320 performs channel coding methods including but not limited to the following:
  • the processing unit 320 is specifically configured to: when the obtained encoding mode of the transport block is the BG2 LDPC code encoding mode, and the second TBS is greater than 3824 bits, the processing unit 320 is configured to send the The transmission block of the second TBS is divided into a plurality of code blocks CB; if the size difference between the first TBS and the CB is greater than the preset value, the LDPC code encoding method based on the BG2 is used, and the undivided Channel coding is performed on the transport block of the second TBS.
  • the processing unit 320 is specifically configured to: when the obtained encoding mode of the transport block is the BG2 LDPC code encoding mode, and the second TBS is greater than 3824 bits, the The transmission block of the second TBS is divided into multiple code blocks CB; the LDPC code coding method based on the BG2 is used to perform channel coding on each CB.
  • the processing unit 320 performs channel decoding methods including but not limited to the following:
  • the processing unit 320 is specifically configured to: if the obtained encoding method of the transport block is an LDPC code encoding method based on the BG2, and the second TBS is greater than 3824 bits, the received The transmission block of the second TBS is divided into a plurality of code blocks CB; if the size difference between the first TBS and the CB is greater than the preset value, the LDPC code encoding method based on the BG2 is used, and the undivided Channel decoding is performed on the transport block of the second TBS.
  • the processing unit 320 is specifically configured to: when the obtained encoding mode of the transport block is the BG2 LDPC code encoding mode, and the second TBS is greater than 3824 bits, the received first
  • the transmission block of the two TBS is divided into multiple code blocks CB; the LDPC code encoding method based on the BG2 is used to perform channel decoding on each CB.
  • the information transmission apparatus of the embodiment of the present application may be used to implement the technical solutions of the second communication device in the foregoing method embodiments, and the implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 7 is a schematic structural diagram of an information transmission device provided by an embodiment of the application.
  • the information transmission device may be a first communication device or a second communication device, or a component of the first communication device (for example, an integrated circuit, a chip, etc.) or a component of the second communication device, as shown in FIG. 7,
  • the information transmission device 400 may include: a processing unit 410;
  • the processing unit 410 is configured to determine the coding mode of the transmission block according to the expansion factor, and use the determined coding mode of the transmission block to perform channel coding or decoding, and the expansion factor is used when performing channel coding on the transmission block
  • the first code rate or the first TBS used is extended, and the encoding method includes a low-density parity-check LDPC code encoding method based on BG1 and an LDPC code encoding method based on BG2, and encoding codes corresponding to the BG1 and the BG2 The rates are different.
  • the indication information includes identification information of the encoding method.
  • the indication information includes the coding rate and/or the identification information of the TBS used by the first communication device when determining the coding mode of the transmission block; or,
  • the indication information includes function identification information of the expansion factor.
  • the processing unit 410 determines the encoding manner of the transmission block according to the expansion factor, including the following two manners:
  • the processing unit 410 is specifically configured to, when the expansion factor is used to indicate that the first bit rate is expanded, and the first TBS is not expanded, according to the first bit rate and/or The first TBS determines the coding mode of the transport block.
  • the processing unit 410 is specifically configured to determine the value of the transmission block according to the second code rate and/or the second TBS when the expansion factor is used to indicate the expansion of the first TBS.
  • the second TBS is an expanded TBS
  • the second code rate is a code rate determined based on the second TBS.
  • the processing unit 410 performs channel coding methods including but not limited to the following:
  • the processing unit 410 is specifically configured to determine that the coding mode of the transmission block is an LDPC code coding mode based on the BG2, and the second TBS is greater than 3824 bits, to send the
  • the transmission block of the second TBS is divided into multiple code blocks; if the size difference between the first TBS and the code block is greater than the preset value, the LDPC code encoding method based on the BG2 is used, and all to be transmitted
  • the transport block of the second TBS is channel-coded.
  • the processing unit 410 is specifically configured to: when the determined coding mode of the transport block is the LDPC code coding mode of the BG2, and the second TBS is greater than 3824 bits, the The transmission block of the second TBS is divided into multiple code blocks CB; the LDPC code coding method based on the BG2 is used to perform channel coding on each CB.
  • the processing unit 410 performs channel decoding methods including but not limited to the following:
  • the processing unit 410 is specifically configured to determine that the encoding mode of the transport block is an LDPC code encoding mode based on the BG2, and the second TBS is greater than 3824 bits, to perform the processing of the received first
  • the transmission block of the two TBS is divided into multiple code blocks CB; if the size difference between the first TBS and the CB is greater than the preset value, the LDPC code encoding method based on the BG2 is used for the received Channel decoding is performed on the transport block of the second TBS.
  • the processing unit 410 is specifically configured to receive the BG2 LDPC code when the encoding mode of the transmission block determined by the communication device is greater than 3824 bits.
  • the transmission block of the second TBS is divided into multiple code blocks CB; the LDPC code encoding method based on the BG2 is used to perform channel decoding on each CB.
  • the information transmission apparatus in the embodiments of the present application may be used to implement the technical solutions of the first communication device or the second communication device in the foregoing method embodiments, and the implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • the communication device 500 described in this embodiment may be the first communication device (or the component that can be used for the first communication device) or the second communication device (or the second communication device that can be used for the first communication device) mentioned in the foregoing method embodiment. 2. Components of communication equipment).
  • the communication device may be used to implement the method corresponding to the first communication device or the second communication device described in the foregoing method embodiment. For details, refer to the description in the foregoing method embodiment.
  • the communication device 500 may include one or more processors 501, and the processor 501 may also be referred to as a processing unit, which may implement certain control or processing functions.
  • the processor 501 may be a general-purpose processor or a special-purpose processor or the like. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process the communication protocol and communication data
  • the central processor can be used to control the communication device, execute the software program, and process the data of the software program.
  • the processor 501 may also store instructions 503 or data (for example, intermediate data). Wherein, the instruction 503 may be executed by the processor, so that the communication device 500 executes the method corresponding to the first communication device or the second communication device described in the foregoing method embodiment.
  • the communication device 500 may include a circuit, which may implement the sending or receiving or communication functions in the foregoing method embodiments.
  • the communication device 500 may include one or more memories 502, on which instructions 504 may be stored, and the instructions 504 may be executed on a processor, so that the communication device 500 executes the methods described in the foregoing method embodiments.
  • processor 501 and the memory 502 may be provided separately or integrated together.
  • the communication device 500 may further include a transceiver 505 and/or an antenna 506.
  • the processor 501 may be referred to as a processing unit, and is configured to control a communication device (for example, a first communication device or a second communication device).
  • the transceiver 505 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement the transceiver function of the communication device.
  • the processor 501 may determine the encoding mode of the transmission block according to the expansion factor.
  • the corresponding coding rates of BG1 and BG2 are different
  • the transceiver 505 can send the coding mode indication information to the second communication device, and the indication information is used to indicate the coding mode of the transmission block.
  • the transceiver 505 may receive instruction information from the first communication device, and the instruction information is used to indicate transmission.
  • the coding mode of the block; the processor 501 obtains the coding mode corresponding to the above-mentioned indication information, and uses the obtained coding mode to perform channel coding or decoding on the transmission block, wherein the coding mode includes the BG1 based LDPC code coding mode and the BG2 based coding mode LDPC code encoding method, the corresponding encoding rate of BG1 and BG2 are different.
  • the processor 501 and the transceiver 505 described in this application can be implemented in integrated circuits (IC), analog ICs, radio frequency integrated circuits (RFICs), mixed signal ICs, and application specific integrated circuits (application specific integrated circuits). circuit, ASIC), printed circuit board (PCB), electronic equipment, etc.
  • the processor 501 and the transceiver 505 can also be manufactured using various 1C process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • the communication device 500 is described by taking the first communication device or the second communication device as an example, the scope of the communication device described in this application is not limited to the foregoing first communication device or the foregoing second communication device. Device, and the structure of the communication device may not be limited by the figure 8.
  • the communication device in the embodiment of the present application may be used to implement the technical solutions of the first communication device (or the second communication device) in the foregoing method embodiments, and the implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
  • the terminal device 600 can implement the functions performed by the first communication device or the second communication device in the foregoing method embodiments, and the functions can be implemented by hardware or by hardware executing corresponding software.
  • the hardware or software includes one or more modules or units corresponding to the above-mentioned functions.
  • the structure of the terminal device 600 includes a processor 601, a transceiver 602, and a memory 603, and the processor 601 is configured to support the terminal device 600 to perform corresponding functions in the foregoing method.
  • the transceiver 602 is used to support communication between the terminal device 600 and other terminal devices or network devices.
  • the terminal device 600 may further include a memory 603, which is configured to be coupled with the processor 601, and stores necessary program instructions and data of the terminal device 600.
  • the processor 601 can read the program instructions and data in the memory 603, interpret and execute the program instructions, and process the data of the program instructions.
  • the processor 601 performs baseband processing on the data to be sent, and then outputs the baseband signal to the transceiver 602.
  • the transceiver 602 performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through an antenna.
  • the transceiver 602 receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 601, and the processor 601 converts the baseband signal into data and applies the data to the baseband signal. To process.
  • FIG. 9 only shows one memory 603 and one processor 601.
  • the memory 603 may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the terminal device in the embodiment of the present application may be used to execute the technical solutions of the first communication device or the second communication device in the foregoing method embodiments, and the implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 10 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • the network device 700 can implement the functions performed by the first communication device or the second communication device in the foregoing method embodiments, and the functions can be implemented by hardware or by hardware executing corresponding software.
  • the hardware or software includes one or more modules or units corresponding to the above-mentioned functions.
  • the structure of the network device 700 includes a processor 701 and a communication interface 702, and the processor 701 is configured to support the network device 700 to perform corresponding functions in the foregoing method.
  • the communication interface 702 is used to support communication between the network device 700 and other network elements.
  • the network device 700 may further include a memory 703, which is configured to be coupled with the processor 701, and stores necessary program instructions and data of the network device 700.
  • FIG. 10 only shows one memory 703 and one processor 701.
  • the memory 703 may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the network device of the embodiment of the present application may be used to execute the technical solutions of the first communication device or the second communication device in the foregoing method embodiments.
  • the implementation principles and technical effects are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of an information transmission device provided by an embodiment of this application.
  • the device 800 exists in the form of a chip product.
  • the structure of the device includes a processor 801 and a memory 802.
  • the memory 802 is used for coupling with the processor 801.
  • the memory 802 stores the necessary program instructions and data of the device.
  • the device 801 is configured to execute the program instructions stored in the memory 802, so that the device executes the functions of the first communication device or the second communication device in the foregoing method embodiment.
  • the information transmission apparatus in the embodiments of the present application may be used to implement the technical solutions of the first communication device or the second communication device in the foregoing method embodiments, and the implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 12 is a schematic structural diagram of a communication system provided by an embodiment of this application. As shown in 12, the communication system 900 of the embodiment of the present application includes the first communication device 901 and the second network device 902 described above.
  • the first communication device 901 can be used to implement the function of the first communication device in the foregoing method embodiment
  • the second communication device 902 can be used to implement the function of the second communication device in the foregoing method embodiment.
  • the principle and technical effect are similar and will not be repeated here.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)

Abstract

La présente invention concerne un procédé et un appareil de transmission d'informations ainsi qu'un support d'informations : sur la base d'un facteur d'étalement, un premier dispositif de communication détermine un mode de codage de bloc de transport, résolvant le problème d'incapacité de déterminer avec précision le graphe de base qui doit être sélectionné pour un codage de canal LDPC lorsque le débit de code de transmission réel et/ou la TBS du codage de canal ne sont pas cohérents avec un premier débit de code et/ou une première TBS. Le premier dispositif de communication indique le mode de codage déterminé à un second dispositif de communication au moyen d'informations d'indication. Le second dispositif de communication acquiert le mode de codage correspondant aux informations d'indication et utilise le mode de codage acquis pour appliquer un codage ou un décodage de canal aux blocs de transport, réduisant la quantité de calcul du second dispositif de communication, et réduisant ainsi la latence de transmission du système de même qu'augmentant le rendement de transmission du système.
PCT/CN2021/089407 2020-05-12 2021-04-23 Procédé et appareil de transmission d'informations ainsi que support d'informations WO2021227834A1 (fr)

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