CN-122001518-A - Link self-adaptive transmission and wireless interference identification method and device

Abstract

The invention discloses a method and a device for link self-adaptive transmission and wireless interference identification, which relate to the technical field of wireless communication and carry out link self-adaptation by automatically matching channel conditions and characteristics degraded by interference. The method and the device determine the current MCS by determining the current dispatching resource information of the user, at least determine the current MCS based on the first MCS adjustment quantity corresponding to the modulation coding strategy of the user and the second MCS adjustment quantity corresponding to the current dispatching resource information, and transmit data based on the current MCS. The invention adds the second MCS adjustment quantity corresponding to the current scheduling resource information for each user, which can reflect the time-frequency domain characteristics of the interference, so that the link self-adaption can accurately adapt the interference influence to adjust the user coding modulation mode, thereby improving the user rate experience and stability.

Inventors

• XU YUNSHENG

Assignees

• 重庆星网网络系统研究院有限公司

Dates

Publication Date

20260508

Application Date

20241104

Claims (20)

1. 1. A method for link adaptive transmission, comprising: Determining current scheduling resource information of a user; determining a current modulation and coding scheme MCS based on at least a first modulation and coding scheme MCS adjustment amount corresponding to a modulation coding scheme of the user and a second modulation and coding scheme MCS adjustment amount corresponding to the current scheduling resource information; and transmitting data based on the current MCS.
2. 2. The link adaptation transmission method according to claim 1, wherein the scheduling resource information comprises resource block groups RBGs and/or time slots.
3. 3. The link adaptive transmission method of claim 1, wherein the method of determining the first MCS adjustment amount comprises: Determining a first adjustment step size of the first MCS adjustment amount based on a modulation coding strategy of the user; and based on a feedback result of the hybrid retransmission HARQ mechanism, updating the first MCS adjustment quantity with the first adjustment step length.
4. 4. The link adaptive transmission method of claim 2, wherein the method of determining the second MCS adjustment amount comprises: based on a feedback result of the hybrid retransmission HARQ mechanism, updating the MCS adjustment quantity of the historical scheduling resource information of the user by a second adjustment step length; and determining the second MCS adjustment amount according to the MCS adjustment amount corresponding to the current scheduling resource information of the user.
5. 5. The link adaptive transmission method of claim 4, wherein the method of determining the second MCS adjustment amount in case the current scheduling resource information is an RBG, comprises: Determining a second adjustment step of the MCS adjustment amount of the RBG based on the modulation and coding strategy of the user; Updating the MCS adjustment quantity of the RBG of the historical scheduling by the second adjustment step length based on the feedback result of the hybrid retransmission HARQ mechanism for the RBG of the historical scheduling of the user; taking the average value of the MCS adjustment amounts of all RBGs currently scheduled by the user as the second MCS adjustment amount.
6. 6. The link adaptation transmission method of claim 5, wherein the RBG includes at least one resource block RB therein.
7. 7. The link adaptive transmission method of claim 5, wherein the user currently preferentially schedules the RBG having the highest second MCS adjustment.
8. 8. The link adaptive transmission method of claim 4, wherein the method of determining the second MCS adjustment amount in the case that the current scheduling resource information is a slot, comprises: Determining a second adjustment step of the MCS adjustment amount of the time slot based on the modulation and coding strategy of the user; updating the MCS adjustment quantity of the time slot of the historical scheduling by the second adjustment step length based on the feedback result of the hybrid retransmission HARQ mechanism for the time slot of the historical scheduling of the user; and taking the MCS adjustment quantity of the time slot currently scheduled by the user as the second MCS adjustment quantity.
9. 9. The link adaptive transmission method of claim 8, wherein a second MCS adjustment amount for the user to schedule the current slot is obtained, and the current slot is preferentially allocated to the user having the highest second MCS adjustment amount.
10. 10. The link adaptive transmission method of claim 4, wherein the method of determining the second MCS adjustment amount when the current scheduling resource information includes RBGs and slots, comprises: Determining a second adjustment step of the MCS adjustment amount of the RBG and the time slot based on the modulation and coding strategy of the user; updating the MCS adjustment quantity of the RBG and the time slot of the historical schedule by the second adjustment step length based on the feedback result of the hybrid retransmission HARQ mechanism; taking the average value of the MCS adjustment amounts of all RBGs currently scheduled by the user and the sum of the MCS adjustment amounts of the time slots currently scheduled as the second MCS adjustment amount.
11. 11. The link adaptation transmission method according to any of claims 4-10, wherein the second adjustment step size comprises a down step size and an up step size.
12. 12. The link adaptive transmission method of claim 11, wherein a down-step size of an MCS adjustment amount of scheduling resource information and an up-step size adapted to the down-step size are determined based on a modulation coding strategy of the user.
13. 13. The link adaptive transmission method of claim 12, wherein the up-step size is determined based on the down-step size.
14. 14. A link adaptation transmission method according to any one of claims 1-10, characterized in that the method is applied to a terminal or a base station.
15. 15. The link adaptive transmission method of claim 14, wherein the current MCS is determined based on at least a first MCS adjustment amount corresponding to a modulation coding strategy of the user and a second MCS adjustment amount corresponding to the current scheduling resource information on the basis of the initially selected MCS.
16. 16. The link adaptive transmission method of claim 15, wherein the initial MCS is determined according to SINR for the terminal.
17. 17. The link adaptive transmission method of claim 15, wherein for the base station, the initial MCS is determined based on CQI.
18. 18. A link adaptation transmission method according to any one of claims 3-10, further comprising the step of updating the adjustment step size.
19. 19. The link adaptation transmission method of claim 18, wherein the adjustment step size is updated based on fluctuations in MCS and channel quality index within a predetermined period.
20. 20. A computer readable storage medium, characterized in that the storage medium has stored therein a computer program which is operative to perform the link adaptation transmission method as claimed in any one of claims 1-19.

Description

Link self-adaptive transmission and wireless interference identification method and device Technical Field The present invention relates to the field of wireless communication technologies, and in particular, to a link adaptive transmission method and a corresponding communication device, a wireless interference identification method and a corresponding communication device, and a corresponding computer readable storage medium. Background The wireless communication technology brings rich and high-quality services to people, and simultaneously makes the electromagnetic environment become more complex and variable, and various external interference has more and more conditions of influencing the performance of a communication system. Such as 5G cellular network systems, face interference from co-frequency cells, which typically have time-domain or frequency-domain characteristics, i.e., large interference occurs in part of the frequency band or millisecond-level cycle time. To improve communication performance, it is generally required to remove interference, for example, in a common communication system, by filtering an interference frequency band through a frequency domain filter. Not all scenes are applicable to the frequency domain filtering method to eliminate the interference, for example, 1) the scene that the frequency band or time of the interference is changed is unknown, the interference is unpredictable, if the interference measuring method is adopted, the measurement and elimination can only be carried out at the receiving end, and the transmitting end does not know the characteristics of the interference time domain or frequency domain. 2) In the scene of relatively large bandwidth of the interference bandwidth occupying the signal, if frequency domain filtering is performed, the filtered useful signal is contained, and the overall performance becomes worse after filtering. 3) The scene with overall weak interference strength also weakens because the filtered signal also contains useful signals. But this scenario before filtering can be correctly transmitted under coded modulation at a low code rate, although the channel conditions are degraded. For the above scenario where frequency domain filtering is not applied, a learner proposes a link adaptation technique to eliminate co-channel interference, where the key of the link adaptation technique is to select a modulation and coding strategy MCS (Modulation and Coding Scheme). The technology mainly comprises the following steps of 1) dynamically selecting a signal modulation mode and a coding rate according to channel quality conditions to realize dynamic matching of a coding modulation scheme MCS and the channel quality, and 2) retransmitting information which cannot be decoded correctly to automatically adapt to channel variation so as to improve the transmission performance of a system. 3) And when the MCS selection scheme is used for performing the series adjustment, adopting an adaptive switching algorithm to perform the series adjustment. However, the rate performance of the current link adaptation technology is poor, and the adaptation effect on the scene with the time-frequency domain characteristics is poor. Disclosure of Invention The invention aims to provide a method and a device for link self-adaptive transmission and wireless interference identification, which aim at solving all or part of the problems, and automatically match the channel condition and the characteristics degraded by interference to carry out the link self-adaptive transmission. The technical scheme adopted by the invention is as follows: The invention provides a link self-adaptive transmission method, which comprises the following steps: The method includes determining current scheduling resource information of a user, determining a current MCS based on at least a first MCS adjustment amount corresponding to a modulation coding strategy of the user and a second MCS adjustment amount corresponding to the current scheduling resource information, and transmitting data based on the current MCS. The invention also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program can be operated to execute the link self-adaptive transmission method. The invention also provides a communication device, which comprises a first processor and a first storage medium, wherein the first storage medium stores a computer program, and the first processor runs the computer program in the first storage medium to execute the link self-adaptive transmission method. The invention also provides a wireless interference identification method, which comprises the following steps: determining a second MCS adjustment quantity corresponding to the current dispatching resource information of the user, and judging the interfered condition of the corresponding dispatching resource information according to the second MCS adjustment quantity