EP-4037417-B1 - COMMUNICATION LINK DETERMINING METHOD AND APPARATUS, AND DEVICE AND STORAGE MEDIUM

EP4037417B1EP 4037417 B1EP4037417 B1EP 4037417B1EP-4037417-B1

Inventors

HAN, ZHIQIANG
FANG, YONGGANG
SUN, BO
LI, NAN
YANG, DAN

Dates

Publication Date: 20260506
Application Date: 20200927

Claims (13)

A communication link determination method, comprising: determining (110, 210, 21), in a communication link set supported by a device, a first communication link set, wherein the first communication link set comprises at least one communication link, and a channel state of each of the at least one communication link in the first communication link set is idle; detecting (220, 22) the channel state of the at least one communication link in the first communication link set during an arbitration inter-frame space, AIFS; and determining (230, 23), according to the channel state of the at least one communication link in the first communication link set during the AIFS, a second communication link set, wherein the second communication link set comprises at least one communication link, and a channel state of each of the at least one communication link in the second communication link set is idle during the AIFS; and determining (240), based on the second communication link set, a target communication link set for transmitting a radio frame, wherein the target communication link set comprises at least one communication link, and a channel state of each of the at least one communication link in the target communication link set is idle in each of backoff slots in a backoff procedure.
The method according to claim 1, further comprising: in a case where no communication link, in the first communication link set, whose channel state is idle is detected during the AIFS, re-determining, in the communication link set supported by the device, a first communication link set in which a channel state of at least one communication link is idle.
The method according to claim 1, further comprising: in a case where no communication link, in the second communication link set, whose channel state is idle is detected in any of the backoff slots in the backoff procedure, re-determining, in the communication link set supported by the device, a first communication link set in which a channel state of at least one communication link is idle.
The method according to claim 1, wherein each communication link in the communication link set supported by the device comprises a primary channel and a secondary channel; and a channel state of each communication link is a channel state of the primary channel of each communication link.
The method according to claim 4, further comprising: determining (270) a transmission bandwidth of each communication link in the target communication link set according to a channel state of the primary channel and the secondary channel of each communication link in the target communication link set during a first set time period before transmission of the radio frame.
The method according to claim 1, further comprising: detecting (250) a channel state of at least one communication link in a third communication link set during a second set time period before transmission of the radio frame, wherein a union of the third communication link set and the target communication link set is the communication link set supported by the device; and adding (260) a communication link, in the third communication link set, whose channel state is idle during the second set time period to the target communication link set.
The method according to claim 1, further comprising: determining a transmission bandwidth of each communication link in the target communication link set according to a channel state of each communication link in the target communication link set during a first set time period before transmission of the radio frame; and adding a communication link, in a third communication link set, whose channel state is idle during a second set time period before the transmission of the radio frame to the target communication link set, wherein a union of the third communication link set and the target communication link set is the communication link set supported by the device; wherein a duration of the first set time period is less than or equal to a duration of the second set time period.
The method according to claim 1, further comprising: determining a transmission bandwidth of each communication link in the target communication link set according to a channel state of each communication link in the target communication link set during a first set time period before transmission of the radio frame; and adding a communication link, in a third communication link set, whose channel state is idle during a second set time period before the transmission of the radio frame to the target communication link set, wherein a union of the third communication link set and the target communication link set is the communication link set supported by the device; wherein a threshold for determining whether a channel state is idle in the target communication link set during the first set time period is greater than or equal to a threshold for determining whether a channel state is idle in the third communication link set during the second set time period.
The method according to any one of claims 1 to 8, further comprising: determining, for each communication link in the communication link set supported by the device, a channel state of each communication link to be idle in a case where the channel state is assessed to be idle by a physical layer and a network allocation vector, NAV, is determined to be 0 according to time information carried in the radio frame.
The method according to any one of claims 1 to 9, wherein the communication link set supported by the device is a communication link set supported by both a data receiver and a data transmitter.
A communication link determination apparatus, comprising: a first link determination module (310), which is configured to determine, in a communication link set supported by a device, a first communication link set, wherein the first communication link set comprises at least one communication link, and a channel state of each of the at least one communication link in the first communication link set is idle; a second link determination module (320), which is configured to detect the channel state of the at least one communication link in the first communication link set during an arbitration inter-frame space, AIFS; and determine, according to the channel state of the at least one communication link in the first communication link set during the AIFS, a second communication link set, wherein the second communication link set comprises at least one communication link, and a channel state of each of the at least one communication link in the second communication link set is idle during the AIFS; and a target link determination module (330), which is configured to determine, based on the second communication link set, a target communication link set for transmitting a radio frame, wherein the target communication link set comprises at least one communication link, and a channel state of each of the at least one communication link in the target communication link set is idle in each of backoff slots in a backoff procedure.
A device, comprising: at least one processor (410); and a storage apparatus (420), which is configured to store at least one program; wherein the at least one program, when executed by the at least one processor, causes the at least one processor to implement the communication link determination method of any one of claims 1 to 10.
A computer-readable storage medium, which is configured to store a computer program which, when executed by a processor, implements the communication link determination method of any one of claims 1 to 10.

Description

TECHNICAL FIELD The present application relates to wireless communication networks, for example, a communication link determination method and apparatus, a device and a storage medium. BACKGROUND With the development of wireless communication technology and the rapid growth of business requirements, users have higher and higher requirements for coverage capability, quality of service and throughput of wireless communication. Multi-link communication technology can provide more communication links and larger transmission bandwidth for devices to transmit more data. Each communication link may be referred to as a channel, or a link or a band, and data can be transmitted by using a communication link whose channel state is idle. The bandwidth of each communication link is composed of a base bandwidth set by the frequency band in which the communication link is located. However, in the application scene of multiple communication links, the channel state of each communication link changes continuously, and conflicts exist in data transmission between each communication link, resulting in poor reliability of the multi-link communication. Further relevant technologies are also known from US 10 201 019 B2 (LG ELECTRONICS INC [KR]) 5 February 2019 (2019-02-05) and CN 107 770 879 A (HUAWEI TECHNOLOGIES CO., LTD.) 6 March 2018 (2018-03-06). SUMMARY The present application provides a communication link determination method and apparatus, a device and a storage medium to improve the reliability of multi-link communication. The invention is set out in the appended set of claims. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a flowchart of a communication link determination method according to an embodiment;FIG. 2 is a schematic diagram of a logical architecture of a medium access control sublayer and physical layers according to an embodiment;FIG. 3 is a schematic diagram of another logical architecture of a medium access control sublayer and physical layers according to an embodiment;FIG. 4 is a schematic diagram of a communication link determination process according to an embodiment;FIG. 5 is a flowchart of another communication link determination method according to an embodiment;FIG. 6 is a flowchart of another communication link determination method according to an embodiment;FIG. 7 is a schematic diagram of another communication link determination process according to an embodiment;FIG. 8 is a structural diagram of a communication link determination apparatus according to an embodiment; andFIG. 9 is a structural diagram of a device according to an embodiment. DETAILED DESCRIPTION The present application is described below in conjunction with drawings and embodiments. It is to be noted that if not in collision, the embodiments of the present application and features therein may be combined with each other in any manner. In the application scene of multi-link communication, the channel state of each communication link changes continuously, and conflicts exist in data transmission between each communication link, resulting in poor reliability of the multi-link communication. In the embodiment of the present application, a communication link determination method is provided. The channel state of each communication link is detected in a backoff procedure before transmission of a radio frame, thus the change of the channel state of each communication link is considered, and then a target communication link is determined, so that the reliability of the multi-link communication is improved. FIG. 1 is a flowchart of a communication link determination method according to an embodiment. The communication link determination method of the embodiment is applicable to a device supporting data transmission with another device through at least one communication link, for example, a sender device of the data. As shown in FIG. 1, the method of the embodiment includes 110, 120 and 130. In 110, a first communication link set in which a channel state of at least one communication link is idle is, according to the invention, determined in a communication link set supported by a device. In the embodiment, the channel state of each communication link in the communication link set supported by the device is, according to the invention, detected, and in the case where the channel state of at least one communication link is idle, the at least one communication link whose channel state is idle is determined as the first communication link set. The communication link set supported by the device is composed of communication links supported by both a data receiver and a data transmitter. In 120, a second communication link set is, according to the invention, determined according to the channel state of the at least one communication link in the first communication link set during a preset time period. In the embodiment, the channel state of each communication link in the first communication link set is detected during the preset time period, and in th