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CN-122001542-A - Communication method and device

CN122001542ACN 122001542 ACN122001542 ACN 122001542ACN-122001542-A

Abstract

A communication method and device are applied to the technical field of communication. In the method, a terminal device sends a first signal after modulating a first sequence and resource mapping the modulated signal, wherein the first sequence is obtained by modifying a Gold sequence carrying information source bits, and the Gold sequence carrying information source bits are realized by respectively carrying partial bits in the information source bits by two m sequences in the Gold sequence. In the method, the Gold sequence can bear more information bits, so that bit information with larger data quantity can be transmitted.

Inventors

  • ZOU TONG
  • ZHANG XU
  • Gan Linxiao

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (13)

  1. 1.A method of communication, the method comprising: generating a first sequence based on information source bits, wherein the first sequence is a modified sequence of a Gold sequence carrying the information source bits; Transmitting a first signal, wherein the first signal is obtained by modulating the first sequence and performing resource mapping on the modulated signal; The Gold sequence comprises a first m sequence and a second m sequence, wherein the first m sequence is used for bearing m 1 bits in the information source bits, the second m sequence is used for bearing m 2 bits in the information source bits, and the m 1 and the m 2 are positive integers.
  2. 2. The method of claim 1, wherein the step of determining the position of the substrate comprises, The m 1 bits are used for initialization of the first m-sequence and the m 2 bits are used for initialization of the second m-sequence.
  3. 3. The method of claim 2, wherein the step of determining the position of the substrate comprises, The M 1 or the M 2 is associated with one or more of a total number M of the source bits, a number N of resource elements transmitting the source bits, a modulation order X transmitting the source bits; and M, N and X are positive integers.
  4. 4. The method of claim 3, wherein the step of, The m 1 and the m 2 satisfy the following relationship:
  5. 5. the method according to any one of claim 1 to 4, wherein, The period of the Gold sequence is Or alternatively The period of the Gold sequence is 2 K -1,K≥max(m 1 ,m 2 ), and 2K is more than or equal to M; and M is the total number of the source bits, K and M are positive integers, and K and M are mutually independent.
  6. 6. The method according to any one of claim 1 to 5, wherein, The first signal is an adoption of -Binary phase shift keying or quadrature phase shift keying.
  7. 7. The method according to any one of claim 1 to 6, wherein, The first signal is a discrete fourier transform spread orthogonal frequency division multiplexing waveform.
  8. 8. A communication device, characterized in that it comprises means for performing the method according to any of claims 1 to 7.
  9. 9. A communication device, characterized in that it comprises a processor configured to perform the method according to any of claims 1 to 7.
  10. 10. A chip comprising at least one processor for executing instructions to cause a communication device comprising the chip to perform the communication method of any one of claims 1 to 7.
  11. 11. The chip of claim 10, further comprising interface circuitry for receiving the executed instructions and transmitting to the processor.
  12. 12. A computer readable storage medium storing instructions which, when executed on a communications device, implement a method according to any one of claims 1 to 7.
  13. 13. A computer program product containing instructions which, when run on a communication device, implement the method according to any one of claims 1 to 7.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background In a communication system, the number of bits transmitted by a packet is generally 10-30 bits (bits), a transmitting side can transmit by adopting a coherent transmission mode based on a demodulation reference signal (demodulation REFERENCE SIGNAL, DMRS), a receiving side can estimate a channel based on the DMRS, and the estimated channel is utilized to perform operations of equalization, demodulation and decoding on data. However, in the coverage scenario, the channel estimation accuracy is limited, which may lead to a decrease in detection performance. Therefore, in the coverage scene, the transmitting side can adopt a non-coherent transmission mode without DMRS to promote coverage. Specifically, the transmitting side determines the sequence to be transmitted according to the bit value to be transmitted, and the receiving side carries out correlation detection based on the local sequence pool and the received signal, and the sequence corresponding to the maximum correlation value is the transmitted sequence. With the development of communication technology, future packet transmission may need to transmit more bits, such as 30-60 bits, and in this case, how to transmit bit information with larger data size is still under study. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which enable a terminal device to transmit bit information with larger data volume. In a first aspect, an embodiment of the present application provides a communication method, where the method is performed by a terminal device, where the terminal device may be a terminal, or a component of the terminal (such as a processor, a chip, or a chip system, etc.), or may be a logic module capable of implementing all or part of a terminal function. The method includes that a terminal device generates a first sequence based on source bits, and the terminal device transmits a first signal, wherein the first signal is obtained by modulating the first sequence and performing resource mapping on the modulated signal. The first sequence is a modified Gold sequence carrying information source bits, the Gold sequence comprises a first m sequence and a second m sequence, the first m sequence is used for carrying m 1 bits in the information source bits, the second m sequence is used for carrying m 2 bits in the information source bits, and m 1、m2 is a positive integer. In this method, the first signal sent by the terminal device is a signal generated by using two m-sequences in the Gold sequence to carry source bits. The Gold sequence has larger sequence capacity and can bear more bit information, so the method can transmit bit information with larger data quantity. In the method, the terminal device adopts a Gold sequence bearing information source bit belonging to a non-coherent transmission mode without DMRS, or the terminal device does not need to configure the DMRS sequence, so that bit information with larger data volume can be transmitted on the premise of ensuring coverage. Because the Gold sequence has good cross-correlation property, the receiving side can obtain the actually transmitted source bit by performing correlation detection based on the received signal and the local Gold sequence pool. In addition, since the period of the Gold sequence is 2 n -1, n=1, 2, and the number of subcarriers in the configured time-frequency resource does not necessarily match, length matching is required, that is, the Gold sequence of the complete period is modified, such as truncated or circularly expanded, so as to meet the requirement of time-frequency resource. Thus, the first sequence is a modified sequence of Gold sequences carrying source bits, the modification including but not limited to truncation or cyclic extension. In an alternative embodiment, m 1 bits are used for the initialization of the first m-sequence and m 2 bits are used for the initialization of the second m-sequence. Wherein for m-sequences the effects of cyclic shift and transforming the initial values are equivalent. Specifically, for an m-sequence with a period of 2 n -1, it is assumed that an initial value x= [ x 0,x1,x2,…xn-1 ] generates a sequence S, a sequence S 'obtained by cyclic shifting the sequence S by l times is still an m-sequence, l=0, 1,2,..2 n -2, and another initial value x' = [ x '0,x1′,x′2,…x′n-1 ] generates a sequence S'. It can be seen that in this embodiment, the terminal device may take m 1 bits in the source bits as the initial input of the first m-sequence, and take m 2 bits in the source bits as the initial input of the second m-sequence, so as to implement the bearing of the source bits. In an alternative embodiment, M 1 or M 2 is associated with one or more of the total number of source bits M