CN-122002319-A - Communication method, device and communication equipment

CN122002319ACN 122002319 ACN122002319 ACN 122002319ACN-122002319-A

Abstract

The application discloses a communication method, a device and communication equipment, and belongs to the technical field of communication. The communication method comprises the steps of receiving target non-orthogonal multiple access signals from second equipment, determining a first function according to the target non-orthogonal multiple access signals, wherein the first function is used for representing a function relation of mapping a subcarrier allocation matrix and a power allocation matrix of the target non-orthogonal multiple access signals to a first error rate of the target non-orthogonal multiple access signals, determining subcarrier allocation and power allocation optimization problems of the target non-orthogonal multiple access signals by taking the minimum first error rate as optimization targets based on the first function, and solving the subcarrier allocation and power allocation optimization problems to obtain an optimal subcarrier allocation matrix and an optimal power allocation matrix of the target non-orthogonal multiple access signals. The application reduces the error rate by optimizing the subcarrier allocation and the power allocation of the target non-orthogonal multiple access signals, and realizes high-reliability transmission.

Inventors

WEI BENHAI
MA SHENGGUO
PAN XIAODONG
LIU YING
LIU YUJIA

Assignees

深圳市国电科技通信有限公司

Dates

Publication Date: 20260508
Application Date: 20251230

Claims (13)

1. A method of communication, applied to a first device, comprising: receiving a target non-orthogonal multiple access signal from a second device, wherein the target non-orthogonal multiple access signal is a non-orthogonal multiple access signal based on a code domain; Determining a first function of the target non-orthogonal multiple access signal according to the target non-orthogonal multiple access signal, wherein the first function is used for representing a function relation of mapping a subcarrier allocation matrix and a power allocation matrix of the target non-orthogonal multiple access signal to a first error rate of the target non-orthogonal multiple access signal, the first error rate is a sum of error rates of all subcarriers of all user equipment on the target non-orthogonal multiple access signal, the subcarrier allocation matrix is used for representing a corresponding relation between subcarriers in the target non-orthogonal multiple access signal and the user equipment, and the power allocation matrix is used for representing a corresponding relation between power allocation in the target non-orthogonal multiple access signal and each user equipment on each subcarrier; Determining subcarrier allocation and power allocation optimization problems of the target non-orthogonal multiple access signal with a first error rate of minimizing the target non-orthogonal multiple access signal as an optimization target based on the first function; and solving the subcarrier allocation and power allocation optimization problem to obtain an optimal subcarrier allocation matrix and an optimal power allocation matrix of the target non-orthogonal multiple access signal.
2. The method of claim 1, wherein the determining a first function of the target non-orthogonal multiple access signal from the target non-orthogonal multiple access signal comprises: Acquiring the first error rate, and acquiring the ratio of the instantaneous signal-to-noise ratio and the actual transmission state of all signal components of the target non-orthogonal multiple access signal, wherein the signal components are components of the target non-orthogonal multiple access signal of the single user equipment on the single subcarrier; Determining an equivalent signal-to-noise ratio of each signal component of the target non-orthogonal multiple access signal according to the ratio of the instantaneous signal-to-noise ratio of each signal component of the target non-orthogonal multiple access signal to the actual transmission state, wherein the equivalent signal-to-noise ratio is the product of the instantaneous signal-to-noise ratio and the actual transmission state ratio; Fitting the functional relation between the equivalent signal-to-noise ratio and the first error rate according to the equivalent signal-to-noise ratio and the first error rate to obtain a second function, wherein the second function is used for representing the mapping relation between the equivalent signal-to-noise ratio and the first error rate; And determining the first function according to the second function and a third function, wherein the third function is used for representing a function relation of mapping a subcarrier allocation matrix and a power allocation matrix of the target non-orthogonal multiple access signal to the equivalent signal to noise ratio of all signal components of the target non-orthogonal multiple access signal.
3. The method of claim 2, wherein the second function is: , Wherein, the Wherein, the As a first of the parameters of the fit, As a second fit parameter, As a third fitting parameter, For the fourth fitting parameter, a second fitting parameter, For the equivalent signal-to-noise ratio of the signal component of the jth of the user equipment on the kth of the subcarriers of the target non-orthogonal multiple access signal, As a function of the noise power and the equivalent signal-to-noise ratio of the signal component, Representing the error rate of said signal component of a jth said user equipment of said target non-orthogonal multiple access signal on a kth said subcarrier, A first bit error rate for the target non-orthogonal multiple access signal.
4. The method of claim 1, wherein the determining subcarrier allocation and power allocation optimization problems for the target non-orthogonal multiple access signal based on the first function with a first error rate that minimizes the target non-orthogonal multiple access signal as an optimization target comprises: Determining an objective function according to the first function, wherein the objective function is used for minimizing a first error rate of the target non-orthogonal multiple access signal by adjusting a subcarrier allocation matrix and a power allocation matrix of the target non-orthogonal multiple access signal; Determining a target constraint condition according to the sparsity constraint, the total transmitting power constraint, the subcarrier allocation constraint and the fitting parameter constraint of the first function of the target non-orthogonal multiple access signal; And determining subcarrier allocation and power allocation optimization problems of the target non-orthogonal multiple access signals according to the target function and the target constraint condition.
5. The method of claim 4, wherein the subcarrier allocation and power allocation optimization problem for the target non-orthogonal multiple access signal comprises: Wherein, the As a function of the first set, For the objective function, F is a subcarrier allocation matrix of the target non-orthogonal multiple access signal, P is a power allocation matrix of the target non-orthogonal multiple access signal, Mapping function of jth user equipment on kth subcarrier, wherein elements of subcarrier allocation matrix are the following N is the maximum subcarrier number occupied by the jth user equipment, J is the set of all the user equipment, K is the set of all the subcarriers, Indicating the maximum number of user equipments that the kth subcarrier can carry, For the power allocated to the jth ue on the kth subcarrier, the elements of the power allocation matrix are , For a given total power of the power plant, Representing a set of all of the user equipments on the kth subcarrier, Representing a set of all of the fitting parameters, As a first of the parameters of the fit, As a second fit parameter, As a third fitting parameter, And is a fourth fitting parameter.
6. The method of claim 1, wherein solving the subcarrier allocation and power allocation optimization problem to obtain an optimal subcarrier allocation matrix and an optimal power allocation matrix for the target non-orthogonal multiple access signal comprises: decomposing the subcarrier allocation and power allocation optimization problem into a subcarrier allocation sub-problem and a power allocation sub-problem; solving the subcarrier allocation sub-problem through a whale group optimization algorithm to obtain the optimal subcarrier allocation matrix of the target non-orthogonal multiple access signal, wherein the optimal subcarrier allocation matrix is the subcarrier allocation matrix corresponding to the minimum bit error rate of the target non-orthogonal multiple access signal; According to the optimal subcarrier allocation matrix of the target non-orthogonal multiple access signal, solving the power allocation sub-problem through a convex optimization strategy to obtain the optimal power allocation matrix of the target non-orthogonal multiple access signal, wherein the optimal power allocation matrix is the optimal power allocation matrix corresponding to the minimum bit error rate of the target non-orthogonal multiple access signal.
7. The method of claim 1, further comprising at least one of: Transmitting first information to the second device, wherein the first information comprises the optimal subcarrier allocation matrix and the optimal power allocation matrix; And transmitting a new target non-orthogonal multiple access signal to the second device, wherein the new target non-orthogonal multiple access signal is generated based on the optimal subcarrier allocation matrix and the optimal power allocation matrix.
8. The method according to claim 1, wherein the target non-orthogonal multiple access signal is a preferred one of a power line carrier non-orthogonal multiple access signal and a wireless radio frequency non-orthogonal multiple access signal, or the target non-orthogonal multiple access signal is an equivalent received signal; the receiving a target non-orthogonal multiple access signal from a second device, comprising: receiving two paths of non-orthogonal multiple access signals from the second device, wherein the two paths of non-orthogonal multiple access signals comprise the power line carrier non-orthogonal multiple access signal and the wireless radio frequency non-orthogonal multiple access signal; acquiring signal-to-noise ratio and channel quality coefficient of the two paths of non-orthogonal multiple access signals; fusion optimization is carried out according to the signal-to-noise ratio and the channel quality coefficient of the two paths of non-orthogonal multiple access signals, and one path of non-orthogonal multiple access signal is determined; Demodulating and decoding the preferred one-way non-orthogonal multiple access signal; And obtaining another path of retransmission non-orthogonal multiple access signal under the condition that the demodulation and decoding of the preferred path of non-orthogonal multiple access signal are successful, or obtaining the equivalent receiving signal by carrying out joint decoding on the preferred path of non-orthogonal multiple access signal and the retransmission non-orthogonal multiple access signal of the other path of retransmission non-orthogonal multiple access signal under the condition that the demodulation and decoding of the preferred path of non-orthogonal multiple access signal are failed, and taking the equivalent receiving signal as the target non-orthogonal multiple access signal.
9. The method of claim 8, wherein the signal-to-noise ratio and channel quality coefficients of the two non-orthogonal multiple access signals comprise a first signal-to-noise ratio and a first channel quality coefficient of the power line carrier non-orthogonal multiple access signal and a second signal-to-noise ratio and a second channel quality coefficient of the wireless radio frequency non-orthogonal multiple access signal; The fusing optimization is performed according to the signal-to-noise ratio and the channel quality coefficient of the two paths of non-orthogonal multiple access signals, and the determining of the optimized path of non-orthogonal multiple access signals comprises the following steps: Determining first channel quality information of the power line carrier non-orthogonal multiple access signal according to a first signal-to-noise ratio and a first channel quality coefficient of the power line carrier non-orthogonal multiple access signal, and determining second channel quality information of the wireless radio frequency non-orthogonal multiple access signal according to a second signal-to-noise ratio and a second channel quality coefficient of the wireless radio frequency non-orthogonal multiple access signal, wherein the first channel quality information is the product of the first signal-to-noise ratio and the first channel quality coefficient, and the second channel quality information is the product of the second signal-to-noise ratio and the second channel quality coefficient; Comparing and judging the threshold value of the first signal-to-noise ratio, the second signal-to-noise ratio and the demodulation threshold signal-to-noise ratio; When the first signal-to-noise ratio is smaller than the threshold value and the second signal-to-noise ratio is larger than or equal to the threshold value, or the first signal-to-noise ratio is larger than or equal to the threshold value and the second signal-to-noise ratio is smaller than the threshold value, selecting a path of signal with larger signal-to-noise ratio as the preferred path of non-orthogonal multiple access signal; discarding the power line carrier non-orthogonal multiple access signal and the wireless radio frequency non-orthogonal multiple access signal under the condition that the first signal-to-noise ratio and the second signal-to-noise ratio are smaller than the threshold value; And under the condition that the first signal-to-noise ratio and the second signal-to-noise ratio are both larger than or equal to the threshold value, selecting a path of signal with larger channel quality information as the preferred path of non-orthogonal multiple access signal according to the first channel quality information and the second channel quality information.
10. A communication device, comprising: a transceiver module configured to receive a target non-orthogonal multiple access signal from a second device, where the target non-orthogonal multiple access signal is a non-orthogonal multiple access signal based on a code domain; A processing module, configured to determine a first function of the target non-orthogonal multiple access signal according to the target non-orthogonal multiple access signal, where the first function is used to represent a functional relationship of mapping a subcarrier allocation matrix of the target non-orthogonal multiple access signal and a power allocation matrix to a first error rate of the target non-orthogonal multiple access signal, where the first error rate is a sum of error rates of all subcarriers of all user equipments on the target non-orthogonal multiple access signal, and the subcarrier allocation matrix is used to represent a correspondence between subcarriers in the target non-orthogonal multiple access signal and the user equipments, and the power allocation matrix is used to represent a correspondence between a power allocation in the target non-orthogonal multiple access signal and each of the user equipments on each of the subcarriers; The processing module is further configured to determine, based on the first function, a subcarrier allocation and a power allocation optimization problem of the target non-orthogonal multiple access signal with a first error rate that minimizes the target non-orthogonal multiple access signal as an optimization target; And the processing module is also used for solving the subcarrier allocation and power allocation optimization problem to obtain an optimal subcarrier allocation matrix and an optimal power allocation matrix of the target non-orthogonal multiple access signal.
11. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the communication method of any one of claims 1 to 9.
12. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions, which when executed by a processor, implements the communication method according to any of claims 1 to 9.
13. A computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the communication method of any of claims 1 to 9.

Description

Communication method, device and communication equipment Technical Field The present application belongs to the field of communication technologies, and in particular, to a communication method, a device, and a communication device. Background With the continuous development of electric power business towards the convergence of the internet of things and broadband services, the electric power communication network is in need of low delay, high reliability, large connection and the like, and the number of available orthogonal resources in the traditional orthogonal multiple access scheme is strictly limited to the maximum number of supportable users. The Non-orthogonal multiple access technology based on Code-Domain in the Non-orthogonal multiple access (Non-Orthogonal Multiple Access, NOMA) technology can overlap multiple users Non-orthogonally on a resource block less than the number of users, so that the spectrum efficiency of the system is greatly improved, but because of the complexity of the practical use environment of the power line system, strong signal attenuation, a large amount of interference, complex noise and variable impedance exist, the access of more users in the system corresponds to more inter-user interference, the problem of high error rate exists in the communication of the Non-orthogonal multiple access signal based on the Code Domain, and the reliability requirement of the data transmission service is difficult to meet. Disclosure of Invention The embodiment of the application provides a communication method, a device and communication equipment, which can solve the problem of high error rate of a Code-Domain non-orthogonal multiple access signal. In a first aspect, a communication method is provided, performed by a first device, the method comprising: receiving a target non-orthogonal multiple access signal from a second device, wherein the target non-orthogonal multiple access signal is a non-orthogonal multiple access signal based on a code domain; Determining a first function of the target non-orthogonal multiple access signal according to the target non-orthogonal multiple access signal, wherein the first function is used for representing a function relation of mapping a subcarrier allocation matrix and a power allocation matrix of the target non-orthogonal multiple access signal to a first error rate of the target non-orthogonal multiple access signal, the first error rate is a sum of error rates of all subcarriers of all user equipment on the target non-orthogonal multiple access signal, the subcarrier allocation matrix is used for representing a corresponding relation between subcarriers in the target non-orthogonal multiple access signal and the user equipment, and the power allocation matrix is used for representing a corresponding relation between power allocation in the target non-orthogonal multiple access signal and each user equipment on each subcarrier; Determining subcarrier allocation and power allocation optimization problems of the target non-orthogonal multiple access signal with a first error rate of minimizing the target non-orthogonal multiple access signal as an optimization target based on the first function; and solving the subcarrier allocation and power allocation optimization problem to obtain an optimal subcarrier allocation matrix and an optimal power allocation matrix of the target non-orthogonal multiple access signal. In the above technical solution, a target non-orthogonal multiple access signal from a transmitting end or a transmitting end device is received. And fitting the error rate of the target non-orthogonal multiple access signal according to the target non-orthogonal multiple access signal, and determining a first function conforming to the current communication scene, wherein the first function represents a function relation of mapping a subcarrier allocation matrix and a power allocation matrix of the target non-orthogonal multiple access signal to the first error rate of the target non-orthogonal multiple access signal. Based on the first function, a subcarrier allocation and power allocation optimization problem of the target non-orthogonal multiple access signal is determined with a minimized first error rate as an optimization target. And solving the optimization problem to obtain an optimal subcarrier allocation matrix and an optimal power allocation matrix. The optimal subcarrier allocation matrix and the optimal power allocation matrix can be used for generating new non-orthogonal multiple access signals with minimized error rates in the current communication scene, so that the reliability requirements of data transmission services can be met. In some embodiments, the determining a first function of the target non-orthogonal multiple access signal from the target non-orthogonal multiple access signal comprises: Acquiring the first error rate, and acquiring the ratio of the instantaneous signal-to-noise ratio and the actual transmi