CN-122003827-A - Communication method and device

Abstract

A communication method and device comprises generating a reference signal sequence by using Q index sequences, wherein Q is an integer greater than 2, and transmitting a reference signal corresponding to the reference signal sequence. Compared with the generation of the reference signal sequence by utilizing the secondary exponential sequence corresponding to the ZC sequence, the capacity of the reference signal sequence can be improved.

Inventors

• ZHANG CHANG
• WANG FAN
• FENG QI

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20231012

Claims (20)

1. A method of communication, comprising: determining a reference signal sequence according to a first sequence, wherein the first sequence is a Q-th order exponential sequence, and Q is an integer greater than 2; and transmitting the reference signal corresponding to the reference signal sequence.
2. The method of claim 1, wherein when the first sequence is a cubic exponential sequence, the first sequence z (n) satisfies: Wherein n represents an index of the first sequence, n is an integer greater than or equal to zero and less than L, L represents a length of the reference signal sequence, N, M, K, a, b, c and d are parameters in the first sequence, d is a constant, N, M and K are integers greater than 0.
3. The method of claim 2, wherein the value of N is equal to the value of M.
4. A method according to claim 2 or claim 3, wherein a is an integer greater than or equal to zero and less than N.
5. The method of any one of claims 2 to 4, wherein b is an integer greater than or equal to zero and less than M.
6. The method of any one of claims 2 to 5, wherein at least one of N, M or K is prime.
7. The method of any one of claims 1 to 6, wherein the first sequence is determined from a second sequence and a third sequence, the second sequence being a Q-th order exponential sequence and the third sequence being a second order exponential sequence.
8. The method of claim 7, wherein N has a value equal to 3, and the second sequence x (N) satisfies: Wherein N represents an index of the second sequence, N is an integer greater than or equal to zero and less than L, L represents a length of the reference signal sequence, a and K are parameters in the second sequence, and N is an integer greater than 0.
9. The method according to claim 7 or 8, wherein the third sequence y (n) satisfies: Or alternatively Wherein n represents an index of the third sequence, n is an integer greater than or equal to zero and less than L, L represents a length of the reference signal sequence, b, c, d, M and K are parameters in the third sequence, d is a constant, and M and K are integers greater than 0.
10. The method according to any one of claims 7 to 9, wherein the first sequence z (n) is such that z (n) = x (n) y (n) Wherein x (n) represents the second sequence, y (n) represents the third sequence, n represents indexes of the first sequence, the second sequence and the third sequence, the value range is an integer which is more than or equal to zero and less than L, and L is the length of the reference signal sequence.
11. The method according to any one of claims 2 to 10, wherein at least one of N or M is a minimum prime number not less than L or a maximum prime number not greater than L.
12. The method of claim 11, wherein L has a value of 6, at least one of N or M has a value of 7, or L is 12, at least one of N or M is 11 or 13, or L is 18, at least one of N or M is 17 or 19, or L has a value of 24, and at least one of N or M has a value of 23 or 29.
13. The method of any one of claims 1 to 12, further comprising: And determining configuration information of the reference signal, wherein the configuration information comprises indication information of the first sequence.
14. The method according to any of claims 1 to 13, wherein the reference signal is used for probing channel quality and/or demodulation.
15. A method of communication, comprising: Determining configuration information of a reference signal, wherein the configuration information comprises indication information of a first sequence; And receiving the reference signal, wherein a reference signal sequence corresponding to the reference signal is determined according to the first sequence, the first sequence is a Q-time exponential sequence, and Q is an integer greater than 2.
16. The method of claim 15, wherein when the first sequence is a cubic exponential sequence, the first sequence z (n) satisfies: Wherein n represents an index of the first sequence, n is an integer greater than or equal to zero and less than L, L represents a length of the reference signal sequence, N, M, K, a, b, c and d are parameters in the first sequence, d is a constant, N, M and K are integers greater than 0.
17. The method of claim 16, wherein the value of N is equal to the value of M.
18. The method of claim 16 or 17, wherein a is an integer greater than or equal to zero and less than N.
19. The method of any one of claims 16 to 18, wherein b is an integer greater than or equal to zero and less than M.
20. The method of any one of claims 16 to 19, wherein at least one of N, M or K is prime.

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 wireless communication systems, the most important and difficult task is to combat variability and uncertainty in the wireless transmission environment. The transmitting end can better utilize the instant channel information in an efficient communication mode, and the transmitting end performs proper information/signal preprocessing, so that the transmission of the transmitting end can be matched with the instant channel information. It is also necessary to obtain instantaneous channel information from the receiving end in order to enable correct reception and demodulation of data. The transmitting end and/or the receiving end can obtain the instantaneous channel information by measuring the transmitted reference signals. How to generate and transmit reference signals to the opposite end is one direction of research. Disclosure of Invention The application provides a communication method and a communication device, which can realize generation and transmission of a reference signal to an opposite terminal. In a first aspect, a communication method is provided, an executable of the method being a first communication device. In the downlink communication scenario, the first communication device is access network equipment, or a module (such as a chip, a circuit and the like) in the access network equipment, or a logic node, a logic module, software or the like for realizing the functions of the access network equipment in whole or in part, or in the uplink communication scenario, the first communication device is a terminal, or a module (such as a chip, a circuit and the like) in the terminal, and the method comprises the steps of determining a reference signal sequence according to a first sequence, wherein the first sequence is a Q-time exponential sequence, Q is an integer greater than 2, and transmitting a reference signal corresponding to the reference signal sequence. Optionally, the reference signal is used for probing channel quality and/or demodulation. Through the design, the reference signal sequence is generated by using the Q times of exponential sequences, and the value of Q is more than 2. For example, when Q has a value of 3, the capacity of the reference signal sequence is affected by the cubic term parameter (e.g., a) in addition to the quadratic term parameter (e.g., b), thereby increasing the capacity of the reference signal sequence. For example, in the scheme of generating the reference signal sequence by using the ZC sequence, when the value range of b is 0≤b≤M-1, the capacity of the reference signal sequence is M-1. When the three-time exponential sequence is used for generating the reference signal sequence, when the value range of b is more than or equal to 0 and less than or equal to M-1, and the value range of a is more than or equal to 0 and less than or equal to a and less than or equal to N-1, the capacity of the reference signal sequence is NM-1. When the values of N and M are close to the length L of the reference signal sequence, the capacity of the reference signal sequence generated by using the ZC sequence is L-1, and by adopting the scheme of the embodiment of the application, the capacity of the generated reference signal sequence is L 2 -1, and the capacity of the reference signal sequence is improved by approximately L times. In one design, when the first sequence is a cubic exponential sequence, the first sequence z (n) satisfies: Wherein n represents an index of the first sequence, n is an integer greater than or equal to zero and less than L, L represents a length of the reference signal sequence, N, M, K, a, b, c and d are parameters in the first sequence, d is a constant, N, M and K are integers greater than 0. In one design, N is equal to M, e.g., n=m. In one design, a is an integer greater than or equal to zero and less than N. In one design, b is an integer greater than or equal to zero and less than M. In one design, at least one of N, M or K is prime. By the design, the parameters N, M or K and the like in the first sequence are set to be prime numbers, so that the obtained reference signal sequence has good correlation characteristics. In one design, the first sequence is determined based on a second sequence that is a Q index sequence and a third sequence that is a second index sequence. For example, the first communication device may determine the first sequence based on the second sequence and the third sequence, and so on. In one design, when N is equal to 3, the second sequence x (N) satisfies: Wherein N represents an index of the second sequence, N is an integer greater than or equal to zero and less than L, L represents a length of the reference signal sequence, a and N are parameters in the second sequence, and N is an integer greater than 0. In one desi