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CN-122001551-A - Communication method and application device

CN122001551ACN 122001551 ACN122001551 ACN 122001551ACN-122001551-A

Abstract

The embodiment of the application provides a communication method and an application device, which can be applied to the field of satellite communication, such as NTN. By adopting the embodiment of the application, K which is smaller than or equal to the number of the expansion units occupied by the transmission block is firstly determined. K is the number of expansion units occupied by each first time unit in Q expansion units which are used for OCC expansion of the transmission block based on the first OCC sequence. In this way, based on the first time unit, the first data to be transmitted by the transport block on different expansion units is subjected to OCC expansion based on the first OCC sequence. Under the condition that the expansion unit occupied by the first time unit is smaller than the expansion unit occupied by the transmission block, the space between the same first data expanded on the expansion unit can be reduced, and the anti-interference performance of data transmission is improved.

Inventors

  • ZHANG JINGWEI
  • CHEN YING
  • ZHANG JIAYIN
  • QIAO YUNFEI

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1. A method of communication, comprising: The terminal device determines the number K of the expansion units occupied by each first time unit in the Q expansion units, wherein K is smaller than the number N of the expansion units occupied by a transmission block, the first data to be transmitted by the transmission block on each expansion unit are different, Q=N=L, and L is the number of OCC elements in a first orthogonal cover code OCC sequence; The terminal device transmits K second data on each first time unit of the Q spreading units, where the second data is data obtained by multiplying the first data by an OCC element in the first OCC sequence.
  2. 2. The method of claim 1, wherein N is an integer multiple of K.
  3. 3. The method of claim 2, wherein the Q extension units include N/K second time units, the second time units include L first time units, OCC elements corresponding to each of the second time units are different, and each of the first time units corresponds to the same K first data.
  4. 4. A method according to any one of claims 1 to 3, wherein the first data is data extended by a second OCC sequence, the second OCC sequence and the first OCC sequence corresponding to different OCC patterns.
  5. 5. A method of communication, comprising: the terminal device determines a first interleaving mode of Q expansion units, wherein Q=N×L, L is the number of OCC elements in a first orthogonal cover code OCC sequence, N is the number of expansion units occupied by a transmission block, and the transmission block has different first data to be transmitted on each expansion unit; And the terminal device sends Q second data on the Q expansion units, the transmission position of the second data on the expansion units is determined by the first interleaving mode, and the second data is obtained by multiplying the first data by an OCC element in the first OCC sequence.
  6. 6. The method as recited in claim 5, further comprising: The terminal device receives first information indicating whether interleaving is required.
  7. 7. The method according to claim 5 or 6, wherein the terminal device determines a first interleaving manner of Q spreading units, comprising: The terminal device receives second information, where the second information is used to indicate the first interleaving manner.
  8. 8. The method of claim 7, wherein the second information includes an interleaving sequence, the interleaving sequence corresponding to Q spreading units, or the interleaving sequence corresponding to a spreading unit of the Q spreading units that needs to be interleaved, the interleaving sequence being used to indicate the first interleaving manner.
  9. 9. The method according to any one of claims 1 to 8, further comprising: The terminal device receives third information including a sequence index of the first OCC sequence, the sequence index indicating that first data in the transport block is multiplied by OCC elements in the first OCC sequence.
  10. 10. A method of communication, comprising: the network device determines the number K of expansion units occupied by each first time unit in the Q expansion units, wherein K is smaller than the number N of expansion units occupied by a transmission block, the first data to be transmitted by the transmission block on each expansion unit are different, and Q=N×L, and L is the number of OCC elements in a first orthogonal cover code OCC sequence; the network device receives K second data on each first time unit of the Q spreading units, the second data being multiplied by OCC elements in the first OCC sequence.
  11. 11. The method of claim 10, wherein N is an integer multiple of K.
  12. 12. The method of claim 11, wherein the Q spreading units comprise N/K second time units, the second time units comprise L first time units, OCC elements corresponding to each of the second time units are different, and each of the first time units corresponds to the same K first data.
  13. 13. The method according to any one of claims 10 to 12, wherein the first data is data extended by a second OCC sequence, the second OCC sequence and the first OCC sequence corresponding to different OCC patterns.
  14. 14. A communication device, comprising: the network device determines a first interleaving mode of Q expansion units, wherein Q=N×L, L is the number of OCC elements in a first orthogonal cover code OCC sequence, N is the number of expansion units occupied by a transmission block, and the transmission block has different first data to be transmitted on each expansion unit; the network device receives Q second data on the Q expansion units, the transmission position of the second data on the expansion units is determined by the first interleaving mode, and the second data is obtained by multiplying the first data by an OCC element in the first OCC sequence.
  15. 15. The method as recited in claim 14, further comprising: the network device transmits first information indicating whether interleaving is required.
  16. 16. The method according to claim 14 or 15, further comprising: The network device transmits second information, where the second information is used to indicate the first interleaving manner.
  17. 17. The method of claim 16, wherein the second information comprises an interleaving sequence corresponding to the Q spreading units or the interleaving sequence corresponding to spreading units of the Q spreading units that need interleaving.
  18. 18. The method according to any one of claims 14 to 17, further comprising: The network device transmits third information including a sequence index of the first OCC sequence, the sequence index being used for multiplying first data in the transport block with OCC elements in the first OCC sequence.
  19. 19. A communication device comprising means for performing the method according to any of claims 1 to 18.
  20. 20. A communication device, characterized in that it comprises at least one processor, which, when operated, causes the method according to any one of claims 1 to 18 to be performed.

Description

Communication method and application device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and an application apparatus. Background Network devices (e.g., satellites, etc.) in a non-terrestrial network (non-TERRESTRIAL NETWORK, NTN) are much higher in operational altitude than network devices (e.g., base stations, etc.) in a terrestrial network, and thus network devices in NTN need to cover much larger terrestrial areas and serve a large number of terminal devices, requiring coverage enhancement techniques in an upstream communication scenario. Coverage enhancement techniques may include repeated transmissions, multi-slot Transport Blocks (TBs) processing over multiple slots, TBoMS, demodulation reference signal (de-modulation REFERENCE SIGNAL, DMRS) bundling, and so on. These techniques essentially use time-frequency resources repeatedly to transmit information from the terminal devices, resulting in more resources being occupied, increasing the transmission time of the information, and reducing the system capacity and throughput of each terminal device. To reduce the resources occupied, one skilled in the art can use orthogonal cover codes (orthogonal cover code, OCC) to enhance the system capacity and increase the transmission rate of the terminal device. The uplink data is transmitted by using the OCC with a Transport Block (TB) transport block (e.g., TBoMS) as an extension unit, so that the transport block has a larger data interval distance in a time unit, and is easy to receive frequency offset interference, so that a network side may have difficulty in despreading to obtain correct uplink data. Disclosure of Invention The embodiment of the application discloses a communication method and an application device, which can reduce the transmission interval distance of the same first data after being expanded on an expansion unit, are beneficial to improving the anti-interference performance of data transmission and can improve the system performance and the system capacity. In a first aspect, the embodiment of the present application discloses a first communication method, where the method may be applied to a terminal device, and the terminal device may be a terminal as a final product (final product), may be a component (component) or a module (module) with a terminal function, or may be a circuit or a chip (such as a modem) chip, a baseband (baseband) chip, or a system on chip (SoC) chip or a system-in-a-chip (SYSTEMIN PACKAGE) chip containing a modem core, a system on chip or a processor) capable of implementing all or part of the terminal functions, or may be a logic node, a logic module or software capable of implementing all or part of the terminal functions. The method comprises the steps of determining the number K of expansion units occupied by each first time unit in Q expansion units, wherein K is smaller than the number N of expansion units occupied by a transmission block, the transmission block is different in first data to be transmitted on each expansion unit, Q=N×L, L is the number of OCC elements in a first orthogonal cover code OCC sequence, and K second data are sent on each first time unit in the Q expansion units, and the second data are the data obtained by multiplying the first data and the OCC elements in the first OCC sequence. Therefore, based on the first time unit as a reference, OCC expansion is performed on first data to be transmitted of the transmission block on different expansion units based on the first OCC sequence, so that the transmission interval distance of the same first data after expansion on the expansion units can be reduced, and the anti-interference performance of data transmission is improved. The OCC extension of the first data in the transport block based on the first OCC sequence based on the first time unit may be understood as modifying a mapping pattern (pattern) of the transport block. In the embodiment of the present application, taking the first time unit as a reference may be understood that the basic extension unit of OCC extension is the first time unit, and then the first time unit may be multiplied by one OCC element alone. K can be understood as the number of extension units for performing OCC extension based on the first time unit in the present application. The application is not limited to the extension unit and can be related to the OCC mode. For example, the extension units of inter-slot OCC, inter-repetition OCC of Physical Uplink SHARED CHANNEL (PUSCH) repetition type a, and inter-repetition OCC of PUSCH repetition type B may be a single slot. The spreading unit of inter-symbol OCC may be a single symbol, the spreading unit of inter-symbol group OCC may be a plurality of symbols (symbol group), and the spreading unit of intra-symbol OCC may be a single subcarrier. Optionally, the transport block is TBoMS. In the embodiment of the present appli