WO2023207644A1

WO2023207644A1 - Channel contention method and apparatus

Info

Publication number: WO2023207644A1
Application number: PCT/CN2023/088551
Authority: WO
Inventors: 李云波; 郭宇宸; 淦明; 黄国刚
Original assignee: 华为技术有限公司
Priority date: 2022-04-29
Filing date: 2023-04-15
Publication date: 2023-11-02
Also published as: CN117042046A

Abstract

The present application provides a channel contention method and apparatus. The method comprises: a non-access point station in a multi-link device performs channel contention according to an ML EDCA parameter set instead of using an EDCA parameter set, so that when the allocation of traffic between links is adjusted, the transmission of a non-extremely high throughput station is not affected, and the traffic allocation effect of the multi-link device is not affected, that is, the effect on load balancing or traffic transmission between different links can be reduced. The present application can be applied to WLAN systems such as EHT, Wi-Fi 7, or Wi-Fi 8.

Description

A channel competition method and device

This application claims priority to the Chinese patent application filed with the China Patent Office on April 29, 2022, with the application number 202210467605.6 and the application title "A channel competition method and device", the entire content of which is incorporated into this application by reference. .

Technical field

The present application relates to the field of communication technology, and in particular, to a channel competition method and device.

Background technique

Currently, wireless communication devices can support multi-link communication, such as communicating on multiple links in different communication frequency bands (such as 2.4GHz, 5GHz, 6GHz, etc.), or communicating on different channels in the same communication frequency band. Among them, communication equipment that supports multi-link communication can be called multi-link device (multi link device, MLD). Multi-link devices include access point (AP) MLD and non-access point (non-access point, non-AP) MLD.

At least one link can be established between AP MLD and non-AP MLD. In the process of establishing at least one link, a mapping relationship between a traffic identifier (TID) and a link can be established, so that services can be better managed. For example, AP MLD includes AP1 and AP2, and non-AP MLD includes non-AP STA1 and non-AP STA2, where AP1 is associated with non-AP STA1 and works on link 1; AP2 is associated with non-AP STA2, Working on link 2, TID1 is mapped on link 1, and TID2 is mapped on link 2, so that the service of TID1 can be transmitted on link 1 and the service of TID2 can be transmitted on link 2.

Generally speaking, channel competition needs to be performed before transmitting services. The channel competition mechanism used by non-AP MLD and non-extremely high throughput (EHT) stations (stations, STAs) is the same, that is, both non-AP MLD and non-extremely high throughput (EHT) stations use enhanced distributed channels Access (enhanced distributed channel access, EDCA) mechanism performs channel competition. It is understandable that non-AP MLD includes multiple non-AP STAs, and service data can be transmitted through these multiple non-AP STAs, so data traffic can be flown on multiple links according to channel status or link load. Distribution, that is, there is a business offload problem in non-AP MLD. Non-extremely high throughput sites can only transmit all business data through one link, so there is no business offloading problem. When non-AP STA and non-extremely high throughput sites in non-AP MLD both use the EDCA mechanism for channel competition, if the traffic distribution between links is adjusted, it will affect the transmission of non-extremely high throughput sites. If Taking care of the service transmission of non-AP STA on each link cannot achieve the service distribution effect of non-AP MLD well, that is, it may affect the load balancing or service transmission between different links.

Contents of the invention

This application provides a channel competition method and device, which can adjust the traffic distribution between links without affecting the transmission of non-extremely high throughput sites, let alone the service distribution effect of the second multi-link device. That is, the impact on load balancing or service transmission between different links can be reduced.

In a first aspect, a channel competition method is provided. The method includes: an access point in a first multi-link device generates a first frame, and the first frame includes a first enhanced distributed channel access EDCA parameter set and a second EDCA Parameter set, the first EDCA parameter set is used for non-access point stations in the second multi-link device to compete for channels, and the second EDCA parameter set is used for non-extremely high throughput stations to compete for channels; the first multi-link device The access point in sends the first frame on the first link. As can be seen, In the above technical solution, the access point in the first multi-link device sends the first frame on the first link, so that the non-access point station in the second multi-link device does not recognize the ML EDCA in the first frame. There will be no channel competition when setting the parameter set. When the non-access point station recognizes the ML EDCA parameter set, it will compete for the channel on the first link based on the ML EDCA parameter set. Therefore, the non-access point station will not use the EDCA parameter set. Channel competition, when adjusting the traffic distribution between links, will not affect the transmission of non-extremely high throughput sites, nor will it affect the service distribution effect of the second multi-link device, that is, it can reduce the need for traffic between different links. The impact of load balancing or business transmission. At the same time, this does not conflict with the negotiation-based TID-to-Link mapping mechanism.

Optionally, combined with the first aspect, any inter-frame spacing field of the first access type in the first EDCA parameter set is set to 0, and the access point in the first multi-link device does not allow the access point in the second multi-link device. Non-access point stations use the parameters of the first access type to compete for channels. Among them, prohibiting channel competition for services identified by the first access type service can have two benefits: on the one hand, it can achieve better control effects. In addition to adjusting parameters to increase and reduce competition priority, prohibiting competition This is equivalent to reducing the competition priority to the lowest level. On the other hand, prohibiting competition means that the service will not send uplink data through competition, which will greatly simplify the testing process.

Optionally, combined with the first aspect, the first frame further includes first indication information; the first indication information is used to instruct the non-access point station in the second multi-link device to use the first EDCA parameter set after triggering frame scheduling. Perform channel competition on the first link; or, the first indication information is used to instruct the non-access point station in the second multi-link device to use the second EDCA parameter set to perform on the first link after triggering frame scheduling. Channel competition; or, the first frame also includes a third EDCA parameter set, the third EDCA parameter set is a multi-user EDCA parameter set, and the first indication information is used to indicate that the non-access point station in the second multi-link device is After triggering frame scheduling, the third EDCA parameter set is used to perform channel competition on the first link. It can be seen that in the above technical solution, the access point in the first multi-link device indicates to the non-access point station the parameter set used by the non-access point station after triggering frame scheduling, so that the non-access point station can Access point stations that are triggered by frame scheduling use different parameter sets to maintain competitive fairness with non-access point stations that are not triggered by frame scheduling.

Optionally, combined with the first aspect, the first frame further includes a fourth EDCA parameter set, and the fourth EDCA parameter set is a parameter set used by the non-access point station in the second multi-link device after triggering frame scheduling. It can be seen that in the above technical solution, the access point in the first multi-link device indicates to the non-access point station the parameter set used by the non-access point station after triggering frame scheduling, so that the non-access point station can Access point stations that are triggered by frame scheduling use different parameter sets to maintain competitive fairness with non-access point stations that are not triggered by frame scheduling.

Optionally, in conjunction with the first aspect, the first frame further includes second indication information; the second indication information is used to instruct a non-access point station that is not affiliated with the second multi-link device to use the first EDCA parameter set in the second multi-link device. Perform channel competition on a link; or, the second indication information is used to instruct a non-access point station that is not affiliated with the second multi-link device to use the second EDCA parameter set to perform channel competition on the first link; wherein , non-access point stations that are not affiliated with the second multi-link device only successfully establish a single link. It can be seen that in the above technical solution, the parameter set used by the non-access point station that only successfully establishes a single link is clarified.

Optionally, combined with the first aspect, the second EDCA parameter set is also used for non-access point stations that are not affiliated with the second multi-link device to compete for channels, and non-access point stations that are not affiliated with the second multi-link device. The entry site only successfully establishes a single link. It can be seen that in the above technical solution, the parameter set used by the non-access point station that only successfully establishes a single link is clarified.

In a second aspect, a channel competition method is provided. The method includes: the access point in the first multi-link device generates a first frame, and the first frame includes a first enhanced distributed channel access EDCA parameter set and a second EDCA Parameter set; for the unmapped first service identifier on the first link, the parameters of the first access type corresponding to the first service identifier in the first EDCA parameter set are used for non-access points in the second multi-link device The station competes for the channel for the first access type; for the second service identifier mapped on the first link, the parameters of the second access type corresponding to the second service identifier in the second EDCA parameter set are used for the second service identifier. The non-access point stations in the second multi-link device compete for channels for the second access type; the access point in the first multi-link device sends the first frame on the first link. It can be seen that in the above technical solution, the service identifier mapped on the first link and the unmapped service identifier on the first link do not share the parameter set, which improves the flexibility of parameter setting and does not affect the non-access point. The site transmits business data. In addition, for the second service identifier mapped on the first link, channel competition is still performed on the first link according to the EDCA parameter set, without changing the existing protocol, which improves forward compatibility.

In a third aspect, a channel competition method is provided. The method includes: the access point in the first multi-link device receives a first frame on the first link, the first frame includes a service identifier or an access type, and the first frame The frame is used to request the EDCA parameter set; the access point in the first multi-link device sends the second frame on the first link; wherein the second frame includes the EDCA parameter set corresponding to the service identifier or the EDCA corresponding to the access type. parameter set; or, the second frame includes indication information, and the indication information is used to indicate the EDCA parameter set corresponding to the access type used by the non-access point station in the second multi-link device. It can be seen that in the above technical solution, the non-access point station in the second multi-link device actively sends the first frame to request the EDCA parameter set from the access point in the first multi-link device, thereby obtaining the The second frame of the access point in the first multi-link device, thereby realizing that when the parameters for channel competition are set to a very low access priority or the uplink channel competition is prohibited, channel processing can be performed based on the response frame. compete.

Optionally, combined with the third aspect, the first frame further includes at least one of the following: the reason why the non-access point station in the second multi-link device requests the EDCA parameter set, the non-access point station in the second multi-link device EDCA parameter set indicated by the point site.

Optionally, combined with the third aspect, the second frame includes a status code, and the status code includes a service identifier or an EDCA parameter set corresponding to the access type used by the non-access point station in the second multi-link device, or, the status code Includes instructions.

A fourth aspect provides a channel competition method, which method includes: a non-access point station in the second multi-link device receives a first frame on the first link, where the first frame includes a first EDCA parameter set; The non-access point stations in the two multi-link devices compete for channels on the first link according to the first EDCA parameter set. It can be seen that in the above technical solution, the non-access point site uses the first EDCA parameter set by default to compete for channels on the first link. When adjusting the traffic distribution between links, it will not affect the non-extremely high throughput. It will not affect the service distribution effect of the second multi-link device, that is, it can reduce the impact on load balancing or service transmission between different links. At the same time, this does not conflict with the negotiation-based TID-to-Link mapping mechanism.

In a fifth aspect, a channel competition method is provided. The method includes: a non-access point station in the second multi-link device receives a first frame on the first link, and the first frame includes a second enhanced distributed channel access method. Enter the EDCA parameter set, and the second EDCA parameter set is used for channel competition by non-extremely high throughput stations; if the first EDCA parameter set in the first frame that is different from the second EDCA parameter set is identified, the second EDCA parameter set in the second multi-link device The non-access point stations in the second multi-link device compete for channels on the first link based on the first EDCA parameter set; if the first EDCA parameter set is not recognized, the non-access point stations in the second multi-link device do not compete for channels. compete.

Optionally, combined with the fifth aspect, the first frame further includes first indication information; the first indication information is used to instruct the non-access point station in the second multi-link device to use the first EDCA parameter set after triggering frame scheduling. Perform channel competition on the first link; or, the first indication information is used to instruct the non-access point station in the second multi-link device to use the second EDCA parameter set to perform on the first link after triggering frame scheduling. Channel competition; or, the first frame also includes a third EDCA parameter set, the third EDCA parameter set is a multi-user EDCA parameter set, and the first indication information is used to indicate that the non-access point station in the second multi-link device is After triggering frame scheduling, the third EDCA parameter set is used to perform channel competition on the first link.

Optionally, combined with the fifth aspect, the first frame further includes a fourth EDCA parameter set, and the fourth EDCA parameter set is a parameter set used by the non-access point station in the second multi-link device after triggering frame scheduling.

Optionally, combined with the fifth aspect, the first frame further includes second indication information; the second indication information is used to instruct a non-access point station that is not affiliated with the second multi-link device to use the first EDCA parameter set in the second multi-link device. Channel competition occurs on a link; or, The second instruction information is used to instruct non-access point stations that are not affiliated with the second multi-link device to use the second EDCA parameter set to compete for channels on the first link; wherein, the station that is not affiliated with the second multi-link device The non-access point sites in only successfully establish a single link.

Optionally, combined with the fifth aspect, the second EDCA parameter set is also used for non-access point stations that are not affiliated with the second multi-link device to compete for channels, and non-access point stations that are not affiliated with the second multi-link device. The entry site only successfully establishes a single link.

In a sixth aspect, a channel competition method is provided. The method includes: a non-access point station in the second multi-link device receives a first frame on the first link, and the first frame includes a first enhanced distributed channel access method. Enter the EDCA parameter set and the second EDCA parameter set; for the unmapped first service identifier on the first link, the non-access point site in the second multi-link device matches the first service identifier according to the first EDCA parameter set The corresponding parameters of the first access type perform channel competition on the first link for the first access type; for the second service identifier mapped on the first link, the non-access point in the second multi-link device The station then performs channel competition for the second access type on the first link based on the parameters of the second access type corresponding to the second service identifier in the second EDCA parameter set.

In a seventh aspect, a channel competition method is provided. The method includes: the non-access point station in the second multi-link device sends a first frame on the first link, where the first frame includes a service identifier or access type, The first frame is used to request the EDCA parameter set; the non-access point station in the second multi-link device receives the second frame on the first link; where the second frame includes the EDCA parameter set or access corresponding to the service identifier. The EDCA parameter set corresponding to the type; or, the second frame includes indication information, and the indication information is used to indicate the EDCA parameter set corresponding to the service identifier used by the non-access point station in the second multi-link device or the EDCA corresponding to the access type. Parameter set; non-access point stations in the second multi-link device compete for channels based on the second frame.

Optionally, combined with the seventh aspect, the first frame further includes at least one of the following: the reason why the non-access point station in the second multi-link device requests the EDCA parameter set, the non-access point station in the second multi-link device EDCA parameter set indicated by the point site.

Optionally, combined with the seventh aspect, the second frame includes a status code, and the status code includes a service identifier or an EDCA parameter set corresponding to the access type used by the non-access point station in the second multi-link device, or, the status code Includes instructions.

An eighth aspect provides a communication device, which includes a module for executing the method described in any one of the first to seventh aspects.

A ninth aspect is a chip. The chip includes at least one processor and an interface. The processor is used to read and execute instructions stored in the memory. When the instructions are executed, the chip performs any of the first to seventh aspects. The method of any one of the aspects.

In a tenth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. The computer program includes program instructions. When executed by a computer, the program instructions cause the computer to execute any one of the first to seventh aspects. The method described in any one of the aspects.

In an eleventh aspect, a communication device is provided, including a processor, a memory, an input interface and an output interface. The input interface is used to receive information from other communication devices other than the communication device, and the output interface is used to send information to other communication devices other than the communication device. Other communication devices output information, and the processor calls the computer program stored in the memory to implement the method described in any one of the first to seventh aspects.

In a possible design, the communication device may be a chip that implements the method in any one of the first to seventh aspects or a device containing the chip.

In a twelfth aspect, a computer program product is provided. When a computer reads and executes the computer program product, the computer executes the method described in any one of the first to seventh aspects.

In a thirteenth aspect, a communication system is provided, including the access point in the first multi-link device and/or the non-access point station in the second multi-link device.

Description of the drawings

Figure 1 is a network architecture diagram of a WLAN provided by an embodiment of the present application;

Figure 2 is a schematic diagram of the association between multi-link devices provided by an embodiment of the present application;

Figure 3 shows a schematic diagram of the hardware structure of a communication device applicable to embodiments of the present application;

Figure 4 shows the element structure of an ML EDCA parameter set provided by the embodiment of the present application;

Figure 5 is a schematic flowchart of a channel competition method provided by an embodiment of the present application;

Figure 6 shows the element structure of another ML EDCA parameter set provided by the embodiment of the present application;

Figure 7 is a schematic flow chart of another channel competition method provided by an embodiment of the present application;

Figure 8 is a schematic flowchart of another channel competition method provided by an embodiment of the present application;

Figure 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Among them, the terms "system" and "network" in the embodiments of this application can be used interchangeably. Unless otherwise stated, "/" indicates that the related objects are in an "or" relationship. For example, A/B can represent A or B; "and/or" in this application is only a way to describe related objects. Association relationship means that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural. Furthermore, in the description of this application, unless otherwise specified, "plurality" means two or more than two. "At least one of the following" or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be one or more . In addition, in order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as “first” and “second” are used to distinguish network elements from identical or similar items that have basically the same function. . Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not limit the number and execution order.

Reference in describing an embodiment of the application to "one embodiment" or "some embodiments" or the like means that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Therefore, the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in other embodiments", etc. appearing in different places in this specification are not necessarily References are made to the same embodiment, but rather to "one or more but not all embodiments" unless specifically stated otherwise. The terms “including,” “includes,” “having,” and variations thereof all mean “including but not limited to,” unless otherwise specifically emphasized.

The following specific implementations further describe the objectives, technical solutions and beneficial effects of the present application in detail. It should be understood that the following are only specific implementations of the present application and are not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of this application shall be included in the protection scope of this application.

In the various embodiments of this application, if there is no special explanation or logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

1. Business identification and link mapping (TID-to-link mapping)

With the development of communication technology, multi-link technology can support more and more types of services. In order to better manage services, a mapping relationship between services and links can be established to provide different services for different services. the goal of.

For example, the service identifiers of non-important services can be mapped to some links, and the service identifiers of important services can be mapped to all links, so as to improve the efficiency and accuracy of important service execution. Or, map the service identifiers of different services to corresponding links based on the rates of different links and the delay characteristics of the services.

In some scenarios, during the process of establishing multiple links, a mapping relationship between service identifiers and links is established. Among them, if the mapping relationship between service identifiers and links is not established during the multi-link establishment process, all service identifiers will be mapped to each established link by default.

In other scenarios, after multi-link establishment is completed, remapping between service identifiers and links may be required due to device movement or service changes. For example, after the multi-link equipment of the non-access point site is moved, it reaches the edge of the AP signal coverage, causing the delay-sensitive services on some links to not meet the quality of service (QoS) requirements, and the services need to be re-established. Mapping relationship between identifiers and links to reduce service transmission delay.

The device requesting establishment of service identifier and link mapping may be a non-access point site multi-link device or an access point multi-link device.

2. Enhanced distributed channel access (EDCA) mechanism

The specific EDCA mechanism is: before the station sends data, it needs to conduct clear channel access (CCA) on the wireless medium. If the wireless medium is idle for a period of time (such as the arbitration inter-frame space (AIFS)), the station can begin a random backoff process. If the wireless medium is busy during this period, the station needs to wait for the wireless medium to become idle and remain idle for a period of time (such as the arbitration inter-frame interval) before starting the random backoff process. When the random backoff process is completed, frame exchange can be performed. Among them, the backoff time in the random backoff process is equal to the product of a random backoff value and a slot time. The random backoff value is a value randomly selected from a uniformly distributed contention window [0, CW]. It is understandable that the backoff time in the random backoff process is equal to the initial value of the backoff counter in channel competition. Optionally, there are multiple values for the contention window (CW) in the EDCA mechanism. When a station initially attempts channel competition, the value of CW is the minimum value, that is, the minimum contention window (CWmin). When each transmission fails (for example, a conflict occurs), retransmission (retransmission) is required to compete for the channel again. The value of CW increases gradually until it reaches the maximum value of CW, that is, the maximum contention window (CWmax). ). When data is successfully sent/transmission is successful, CW is reset to CWmin.

The EDCA mechanism allows services of different access categories (AC) to have different EDCA parameter sets. Among them, the EDCA parameter set includes CWmin, CWmax, arbitration inter-frame space (arbitration inter-frame space, AIFS) and other parameters. The EDCA parameters of different access types are shown in Table 1. AC_VO indicates that the access type is voice (voice) stream, AC_VI indicates that the access type is video (video) stream, and AC_BE indicates that the access type is best effort (best effort). Flow, AC_BK indicates that the access type is background flow.

Table 1: EDCA parameters for different access types

EDCA can support 8 types of TIDs, which are: TID0~TID7. AC and TID have a corresponding relationship. One AC can correspond to one or more TIDs. For example, one AC corresponds to two TIDs, or one AC corresponds to one TID. It can also be said that one TID corresponds to one AC, or multiple TIDs. Each TID corresponds to one AC.

3. Multi-user enhanced distributed channel access (MU EDCA) mechanism

The MU EDCA mechanism is similar to the EDCA mechanism. The element structure of the MU EDCA parameter set involved is similar to the element structure of the EDCA parameter set in the EDCA mechanism.

For example, the elements of the EDCA parameter set in the EDCA mechanism include element ID (element ID), length (length), element ID extension (element ID extension), quality of service information (Qos info), and BE business parameter record (AC-BE parameterrecord), BK business parameter record (AC-BK parameter record), VI business parameter record (AC-VI parameter record), VO business parameter record (AC-VO parameter record). Among them, AC_BE parameter record, AC_BK parameter record, AC_VI parameter record and AC_VO parameter record can include business label (ACI)/AIFS, CWmin/CWmax and transmission opportunity limit (TXOPlimit).

As another example, the elements of the MU EDCA parameter set include element identification, length, element identification extension, service quality information, multi-user BE service parameter record (MU AC-BE parameter record), multi-user BK service parameter record (MU AC-BK parameter record), multi-user VI service parameter record (MU AC-VI parameter record), multi-user VO service parameter record (MU AC-VO parameter record). Among them, MU AC_BE parameter record, MU AC_BK parameter record, MU AC_VI parameter record and MU AC_VO parameter record can include ACI/arbitration interframe space number (AIFSN), minimum/maximum contention window size (ECWmin/ECWmax) and TXOPlimit.

It should be understood that the embodiments of the present application can be applied to wireless local area network (WLAN) scenarios and can be applied to IEEE 802.11 system standards, such as 802.11a/b/g, 802.11n, 802.11ac, 802.11ax, or Its next generation, such as 802.11be or next generation standards. Or the embodiments of this application may also be applied to wireless local area network systems such as Internet of Things (IoT) networks or Vehicle to X (V2X) networks. Of course, the embodiments of the present application can also be applied to other possible communication systems, such as long term evolution (long term evolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division) system duplex (TDD), universal mobile telecommunication system (UMTS), global interoperability for microwave access (WiMAX) communication system, and future 6G communication system, etc.

The following takes a scenario where the embodiments of the present application are applicable to WLAN as an example. It should be understood that WLAN starts with the 802.11a/g standard and goes through 802.11n, 802.11ac, 802.11ax and the 802.11be and Wi-Fi 8 that are being discussed today. Among them, 802.11n can also be called high throughput (HT); 802.11ac can also be called very high throughput (VHT); 802.11ax can also be called high efficient (HE) or Wi -Fi 6; 802.11be can also be called extremely high throughput (EHT) or Wi-Fi 7, while standards before HT, such as 802.11a/b/g, are collectively called non-high throughput (EHT). -HT).

Refer to Figure 1, which is a network architecture diagram of a WLAN provided by an embodiment of the present application. Figure 1 takes the WLAN as an example including 1 wireless access point (AP) and 2 stations (STAs). A STA associated with an AP can receive wireless frames sent by the AP and can also send wireless frames to the AP. In addition, the embodiments of the present application are also applicable to the communication between APs. For example, each AP can communicate with each other through a distributed system (DS). The embodiments of the present application are also applicable to the communication between STAs. . It should be understood that the number of APs and STAs in Figure 1 is only an example, and may be more or less.

The STA involved in the embodiments of this application can be various user terminals, user devices, access devices, subscriber stations, subscriber units, mobile stations, user agents, user equipment or other names with wireless communication functions, where the user terminal can Including various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems with wireless communication functions, as well as various forms of user equipment (UE), mobile stations, MS), terminal, terminal equipment, portable communications device, handset, portable computing device, entertainment device, gaming device or system, global positioning system device or anything configured for network communications via a wireless medium Other suitable equipment, etc. For example, STA can be a router, switch, bridge, etc. Here, for the convenience of description, the above-mentioned devices are collectively called sites or STA.

It should be noted that in this application, an EHT site refers to a site that supports the 802.11be protocol. Because the Wi-Fi standard is backward compatible, a new generation site is also a previous generation site. For example, an EHT site is also a HE site. In the same way, the HE site is also a VHT site. The non-extremely high throughput (non-EHT) sites here refer to sites that do not support the EHT protocol, that is, Wi-Fi 6 and earlier sites. It should be noted that according to the design principle of backward compatibility, since a site that supports EHT's next-generation protocol is also an EHT site, non-EHT here does not include EHT's next-generation site.

The APs and STAs involved in the embodiments of this application may be APs and STAs applicable to the IEEE 802.11 system standard. AP is a device deployed in a wireless communication network to provide wireless communication functions for its associated STAs. The AP can be used as the hub of the communication system. It is usually a network-side product that supports the MAC and PHY of the 802.11 system standard. For example, it can be a base station. , routers, gateways, repeaters, communication servers, switches or bridges and other communication equipment, wherein the base stations may include various forms of macro base stations, micro base stations, relay stations, etc. Here, for convenience of description, the above-mentioned devices are collectively referred to as APs. STA is usually a terminal product that supports the media access control (MAC) and physical layer (physical, PHY) of the 802.11 system standard, such as mobile phones, laptops, etc.

This solution can be applied to wireless communication systems. The wireless communication system can be a wireless local area network or a cellular network. This solution can be implemented by a communication device in the wireless communication system or a chip or processor in the communication device. The communication device can be a device that supports multiple channels. Wireless communication devices whose links transmit in parallel are, for example, called multi-link devices or multi-band devices. Compared with devices that only support single-link transmission, multi-link devices have higher transmission efficiency and higher throughput. Multi-link devices include one or more affiliated STAs (affiliated STAs). An affiliated STA is a logical site and can work on one link. Among them, the affiliated station can be an access point (Access Point, AP) or a non-access point station (non-Access Point Station, non-AP STA). For the convenience of description, in this application, the multi-link device whose site is AP can be called multi-link AP or multi-link AP device or AP multi-link device (AP multi-link device), and the site it belongs to is non- The multi-link device of AP STA can be called multi-link STA or multi-link STA device or STA multi-link device. It should be understood that each station in the multi-link device can work on one link respectively, but multiple stations are allowed to work on the same link.

In the embodiments of this application, the multi-link device can allow services of the same access type to be transmitted on different links, and even allows the same data packet to be transmitted on different links; it may also not allow services of the same access type to be transmitted. Transmit on different links, but allow services of different access types to be transmitted on different links.

Refer to Figure 2, which is a schematic diagram of the association between multi-link devices provided by an embodiment of the present application. The AP MLD shown in Figure 2 may include multiple APs, and the STA MLD (ie, non-AP MLD) may include multiple STAs. If the AP MLD needs to communicate with the STA MLD, each AP in the AP MLD needs to be associated with the corresponding STA in the STA MLD. As shown in Figure 2, AP1 in the AP MLD is associated with STA1 in the STA MLD and works on link 1. AP2 in the AP MLD is associated with STA2 in the STA MLD and works on link 2. APn in the AP MLD is associated with STAn in the STA MLD and works on link n. This allows each AP in the AP MLD to establish a connection with the corresponding STA in the STA MLD on its own link, realizing multi-link communication between the two MLDs.

In addition, the AP and STA in this application can support the EDCA mechanism and the MU EDCA mechanism.

Optionally, each device in Figure 1 or Figure 2 (such as AP, STA, AP MLD, non-AP MLD, etc.) can be implemented by one device, can be implemented by multiple devices, or can be implemented within one device. A functional module, which is not specifically limited in the embodiments of this application. It can be understood that the above functions can be either network elements in hardware devices, software functions running on dedicated hardware, or virtualization functions instantiated on a platform (eg, cloud platform).

For example, each device in Figure 1 or Figure 2 can be implemented by the communication device 300 in Figure 3 . FIG. 3 is a schematic diagram of the hardware structure of a communication device applicable to embodiments of the present application. The communication device 300 includes at least one processor 301, a communication line 302, a memory 303 and at least one communication interface 304.

The processor 301 can be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors used to control the execution of the program of the present application. integrated circuit.

Communication line 302 may include a path for communicating information between the above-mentioned components.

The communication interface 304 is any transceiver-like device (such as an antenna, etc.) used to communicate with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (WLAN), etc.

The memory 303 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory (RAM)) or other type that can store information and instructions. A dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be used by a computer Any other medium for access, but not limited to this. The memory may exist independently and be connected to the processor through a communication line 302 . Memory can also be integrated with the processor. The memory provided by the embodiment of the present application may generally be non-volatile.

Among them, the memory 303 is used to store computer execution instructions for executing the solution of the present application, and is controlled by the processor 301 for execution. The processor 301 is used to execute computer execution instructions stored in the memory 303, thereby implementing the methods provided by the following embodiments of the application.

Optionally, the computer-executed instructions in the embodiments of the present application may also be called application codes, which are not specifically limited in the embodiments of the present application.

In a possible implementation, the processor 301 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3 .

In a possible implementation, the communication device 300 may include multiple processors, such as the processor 301 and the processor 307 in FIG. 3 . Each of these processors may be a single-CPU processor or a multi-CPU processor. A processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In a possible implementation, the communication device 300 may also include an output device 305 and an input device 306. Output device 305 communicates with processor 301 and can display information in a variety of ways. For example, the output device 305 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. wait. Input device 306 communicates with processor 301 and can receive user input in a variety of ways. For example, the input device 306 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.

The above-mentioned communication device 300 may be a general-purpose device or a special-purpose device. In a specific implementation, the communication device 300 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a device with a similar structure as shown in Figure 3 equipment. The embodiment of the present application does not limit the type of communication device 300.

In this application, the first multi-link device may be an AP MLD, and the second multi-link device may be a non-AP MLD. Among them, the AP in AP MLD can be understood as AP belonging to AP MLD, and the non-AP STA in non-AP MLD can be understood as non-AP STA belonging to non-AP MLD.

In this application, the first EDCA parameter set is used for non-access point stations in the second multi-link device to compete for channels. Optionally, the first EDCA parameter set is used for the non-access point station to compete for a channel, which can be understood as: the first EDCA parameter set is a parameter set for the non-access point station to compete for a channel when frame scheduling is not triggered, For example, the first EDCA parameter set is used for channel competition by the non-access point station that has not received the trigger frame; or, the first EDCA parameter set is used by the non-access point station for channel competition after being scheduled by the trigger frame, For example, the first EDCA parameter set is used for the non-access point station that receives the trigger frame to compete for a channel.

In this application, the second EDCA parameter set is used for non-extremely high throughput stations to compete for channels. Optionally, the second EDCA parameter set is used for non-extremely high throughput stations to compete for channels, which can be understood as: the second EDCA parameter set is a parameter set for non-extremely high throughput stations that have not triggered frame scheduling to compete for channels, such as The second EDCA parameter set is used for channel contention by non-extremely high throughput stations that have not received the trigger frame. It should be noted that the second EDCA parameter set is the EDCA parameter set in the EDCA mechanism. For the EDCA parameter set in the EDCA mechanism, please refer to the above-mentioned relevant descriptions and will not be described in detail here.

In this application, the third EDCA parameter set is a multi-user EDCA parameter set, that is, the third EDCA parameter set is the MU EDCA parameter set in the MU EDCA mechanism. The MU EDCA parameter set in the MU EDCA mechanism can refer to the above related descriptions. No further details will be given here.

In this application, the fourth EDCA parameter set is the parameter set used by the non-access point station in the second multi-link device after being scheduled by the trigger frame. That is, the fourth EDCA parameter set is the second multi-link device that receives the trigger frame. A set of parameters used by non-access point stations in the device.

Wherein, the first EDCA parameter set, the second EDCA parameter set, the third EDCA parameter set and the fourth EDCA parameter set are different from each other.

For the convenience of description, the first EDCA parameter set can be called the ML EDCA parameter set, the second EDCA parameter set is called the EDCA parameter set, the third EDCA parameter set is called the MU EDCA parameter set, and the fourth EDCA parameter set is called the MU EDCA parameter set. It is called ML MU EDCA parameter set, and it can also use other names, which are not limited here. Optionally, the element structures of ML EDCA parameter set, EDCA parameter set, MU EDCA parameter set and ML MU EDCA parameter set are similar, that is, in this application, ML EDCA parameter set, EDCA parameter set, MU EDCA parameter set, ML MU The EDCA parameter set includes parameters for at least one access type, such as parameters for voice flow, parameters for video flow, and best effort flow. Parameters, parameters whose access type is background stream, etc. In addition, access types have a corresponding relationship with service identifiers. One access type can correspond to one or more service identifiers, for example, one access type corresponds to two service identifiers, or one access type corresponds to one service identifier; It can also be said that one service identifier corresponds to one access type, or multiple service identifiers correspond to one access type.

For example, see Figure 4, which shows the element structure of an ML EDCA parameter set provided by an embodiment of the present application. As shown in Figure 4, elements of the ML EDCA parameter set may include ML AC_BE parameter record, ML AC_BK parameter record, ML AC_VI parameter record, and ML AC_VO parameter record. ML AC_BE parameter record, ML AC_BK parameter record, ML AC_VI parameter record, ML AC_VO The parameter record can include ACI/AIFSN, ECWmin/ECWmax and TXOPlimit. In addition, the elements of the ML EDCA parameter set may also include element identification, length, element identification extension, service quality information, etc. It can be seen that this is similar to the element structure of parameter sets such as EDCA parameter set and MU EDCA parameter set.

Among them, non-AP MLD can include multiple non-AP STAs, and service data can be transmitted through these multiple non-AP STAs. Therefore, data traffic can be distributed on multiple links based on channel status or link load. , that is, there is a business offloading problem in non-AP MLD. Non-extremely high throughput sites can only transmit all business data through one link, so there is no business offloading problem. When both non-AP STAs and non-extremely high throughput stations in non-AP MLD use the EDCA parameter set for channel competition, if the traffic distribution between links is adjusted, the transmission of the non-extremely high throughput stations will be affected. If the service transmission of non-AP STA on each link is taken care of, the service distribution effect of non-AP MLD cannot be achieved well, which may affect the load balancing or service transmission between different links. In order to solve this problem, the embodiment shown in Figure 5 proposes that the non-access point stations in the second multi-link device compete for channels according to the ML EDCA parameter set instead of using the EDCA parameter set for channel competition. Specifically, see FIG. 5 , which is a schematic flowchart of a channel competition method provided by an embodiment of the present application. As shown in Figure 5, the method includes but is not limited to the following steps:

501. The access point in the first multi-link device generates a first frame, where the first frame includes an EDCA parameter set.

Among them, the first frame may be a beacon frame or a probe request frame. It should be understood that the first frame can also be other types of frames.

Optionally, the first frame also includes the ML EDCA parameter set. It should be noted that when a non-extremely high throughput station receives the ML EDCA parameter set in the first frame, because the non-extremely high throughput station cannot understand the ML EDCA parameter set, it still uses the EDCA parameter set for channel competition.

Optionally, any interframe spacing field of the first access type in the ML EDCA parameter set is set to 0, and the access point in the first multi-link device does not allow non-access point stations in the second multi-link device to use it. The parameters of the first access type are used for channel contention. That is, for the service belonging to the service identifier of the first access type, the non-access point station in the second multi-link device is triggered to send uplink after frame scheduling, and the non-access point station is still unable to trigger frame scheduling. Channel contention is performed using parameters of the first access type. If any interframe spacing field of other access types in the ML EDCA parameter set is not set to 0, the access point in the first multi-link device allows non-access point stations in the second multi-link device to use other access types parameters for channel competition. Wherein, the first access type may include at least one of the following: AC_VO, AC_VI, AC_BE, AC_BK. In a possible implementation, the service identifier belonging to the first access type may be mapped on the first link. Of course, other service identifiers can also be mapped on the first link, which is not limited here. It can be seen that in the above technical solution, prohibiting the services with the service identifier of the first access type from competing for channels can have two benefits: on the one hand, it can achieve better control effects, in addition to being able to adjust parameters to increase and reduce competition. In addition to priority, prohibiting competition is equivalent to reducing competition priority to the lowest level. On the other hand, prohibiting competition means that the service will not send uplink data through competition, which will greatly simplify the testing process.

Optionally, when a non-access point station in the second multi-link device is scheduled by the access point in the first multi-link device through a trigger frame, the way in which the non-access point station competes for a channel may include the following: Any kind. In other words, when a non-access point station in the second multi-link device receives a trigger frame, the non-access point station may compete for a channel in any of the following ways.

Method 1.1. The non-access point station uses the ML EDCA parameter set to compete for the channel. That is, the protocol prestipulates that the non-access point station uses the ML EDCA parameter set to compete for the channel.

Method 1.2, the first frame also includes first indication information; the first indication information is used to instruct the non-access point station in the second multi-link device to use the ML EDCA parameter set on the first link after triggering frame scheduling. Channel contention, such as the first indication letter The information is used to instruct the non-access point station in the second multi-link device that receives the trigger frame to use the ML EDCA parameter set to perform channel competition on the first link; or, the first indication information is used to instruct the non-access point station After the point station is scheduled by the trigger frame, it uses the EDCA parameter set to compete for the channel on the first link. For example, the first indication information is used to instruct the non-access point station that receives the trigger frame to use the EDCA parameter set on the first link. Perform channel competition; or, the first frame also includes the MU EDCA parameter set, and the first indication information is used to instruct the non-access point station to use the MU EDCA parameter set to perform channel competition on the first link after triggering frame scheduling, such as The first indication information is used to instruct the non-access point station that receives the trigger frame to use the MU EDCA parameter set to compete for a channel on the first link. For example, when the first frame includes the ML EDCA parameter set and the EDCA parameter set, when the first indication information is set to 0, the first indication information is used to indicate that the non-access point station uses ML EDCA after triggering frame scheduling. The parameter set performs channel competition on the first link. When the indication information is set to 1, the first indication information is used to instruct the non-access point station to use the EDCA parameter set to perform channel competition on the first link after triggering frame scheduling. Competition, and vice versa. In another example, when the first frame also includes the MU EDCA parameter set, when the first indication information is set to 00, the first indication information is used to instruct the non-access point station to use the ML EDCA parameter set after triggering frame scheduling. Channel competition is performed on the first link. When the indication information is set to 01, the first indication information is used to instruct the non-access point station to use the EDCA parameter set to perform channel competition on the first link after frame scheduling is triggered. When the indication information is set to 10, the first indication information is used to instruct the non-access point station to use the MU EDCA parameter set to compete for channels on the first link after frame scheduling is triggered. In a possible implementation, the elements of the ML EDCA parameter set may also include EDCA control information (control info), and the EDCA control info may include the first indication information. For example, see Figure 6 , which shows the element structure of yet another ML EDCA parameter set provided by an embodiment of the present application. As shown in Figure 6, Figure 6 is similar to Figure 4. The difference is that the elements of the ML EDCA parameter set in Figure 6 can also include EDCA control info, and EDCA control info can also include the triggered EDCA parameter indication. after trigger). The triggered EDCA parameter indication can be understood as the first indication information.

Method 1.3, the ML EDCA parameter set includes the first AIFSN, the first ECWmin and the first ECWmax, the MU EDCA parameter set includes the third AIFSN, the third ECWmin and the third ECWmax. The method also includes: in the second multi-link device After the non-access point station is triggered to frame scheduling, the first AIFSN according to the largest AIFSN among the first AIFSN and the third AIFSN, the largest ECWmin among the first ECWmin and the third ECWmin, and the largest ECWmax among the first ECWmax and the third ECWmax. Channel competition occurs on the link.

Method 1.4, the first frame also includes the ML MU EDCA parameter set. The ML MU EDCA parameter set is the parameter set used by the non-access point station in the second multi-link device after triggering frame scheduling.

It can be seen that in any of methods 1.1 to 1.4, the access point in the first multi-link device indicates to the non-access point station the parameter set used by the non-access point station after triggering frame scheduling. This allows the non-access point station to use different parameter sets after being triggered for frame scheduling, thereby maintaining fairness in competition with non-access point stations that are not triggered for frame scheduling.

Optionally, for a non-access point station that successfully establishes only a single link, the non-access point station may compete for a channel in any of the following ways. The non-access point site may not be affiliated with any multi-link device, or the non-access point station may be affiliated with a multi-link device, such as a second multi-link device.

Method 2.1: The first frame may also include second indication information. The second indication information is used to instruct the non-access point station to use the ML EDCA parameter set to compete for the channel on the first link; or, the second indication information is used to instruct the non-access point station to use the EDCA parameter set to compete for the channel on the first link. Channel competition occurs on the link.

In Method 2.2, the EDCA parameter set is also used by the non-access point station to compete for channels. If the protocol pre-stipulates that the non-access point station uses the EDCA parameter set to compete for channels.

It can be seen that in the above methods 2.1 and 2.2, it is clear that the non-access point site that only successfully establishes a single link uses parameter set. In the above method 2.1, the ML EDCA parameter set should not be set to prohibit channel access. In method 2.2, avoid using the ML EDCA parameter set to compete, that is, in method 2.2, the priority of the ML EDCA parameter set is too low or is set to prohibit competition.

502. The access point in the first multi-link device sends the first frame on the first link.

Correspondingly, the non-access point station in the second multi-link device receives the first frame on the first link.

Optionally, the first link may be a link working for the non-access point station.

503. If an ML EDCA parameter set different from the EDCA parameter set in the first frame is identified, the non-access point station in the second multi-link device will compete for a channel on the first link based on the ML EDCA parameter set.

504. If the ML EDCA parameter set is not recognized, the non-access point stations in the second multi-link device will not compete for channels.

In a possible implementation, if the access point in the first multi-link device includes the ML EDCA parameter set in the first frame sent on the first link, step 503 can be replaced with: the second multi-link device The non-access point stations in the second multi-link device compete for channels on the first link based on the ML EDCA parameter set in the first frame. That is, the non-access point stations in the second multi-link device use the ML EDCA parameter set in the second frame by default. Channel competition occurs on one link. In this case, step 504 is not performed.

It can be seen that in the above technical solution, the access point in the first multi-link device sends the first frame on the first link, so that the non-access point station in the second multi-link device does not recognize the first frame. When the non-access point station recognizes the ML EDCA parameter set, it will compete for the channel on the first link based on the ML EDCA parameter set. Therefore, the non-access point station will not use the ML EDCA parameter set. The EDCA parameter set performs channel competition. When adjusting the traffic distribution between links, it will not affect the transmission of non-extremely high throughput sites, nor will it affect the service distribution effect of the second multi-link device, that is, it can reduce the impact on different The impact of load balancing or business transmission between links. At the same time, this does not conflict with the negotiation-based TID-to-Link mapping mechanism.

Currently, for unmapped service identifiers on the link, the non-AP STA in the non-AP MLD competes for channels based on the parameters of the access type to which the service identifier belongs in the MU EDCA parameter set, instead of extremely high Throughput sites also use this MU EDCA parameter set for channel competition, which limits the flexibility of parameter settings and affects the transmission of service data by non-extremely high throughput sites and non-AP STAs in non-AP MLD. In order to solve this problem, the embodiment shown in Figure 7 proposes using different parameter sets for channel competition for unmapped service identifiers on the link and service identifiers mapped on the link. Specifically, see FIG. 7 , which is a schematic flowchart of yet another channel competition method provided by an embodiment of the present application. As shown in Figure 7, the method includes but is not limited to the following steps:

701. The access point in the first multi-link device generates the first frame. The first frame includes the ML EDCA parameter set and the EDCA parameter set.

Among them, the first frame may be a beacon frame or a probe request frame.

Optionally, the first frame also includes a MU EDCA parameter set. For the MU EDCA parameter set, please refer to the above related descriptions and will not be described again here.

702. The access point in the first multi-link device sends the first frame on the first link.

703. For the unmapped first service identifier on the first link, the non-access point site in the second multi-link device uses the parameters of the first access type corresponding to the first service identifier in the ML EDCA parameter set. Channel competition is performed on the first link for the first access type.

The number of first service identifiers may be one or more. The first access type may include at least one of the following: AC_VO, AC_VI, AC_BE, AC_BK.

Optionally, in Figure 7, for the unmapped first service identifier on the first link, when the non-access point site in the second multi-link device is passed by the access point in the first multi-link device When triggering frame scheduling, the non-access point station uses the parameters of the first access type corresponding to the first service identifier in the parameter set of any one of methods 1.1 to 1.4 in Figure 5 to target the first link on the first link. One access type performs channel contention.

Optionally, in Figure 7, for the unmapped first service identifier on the first link, the non-AP MLD negotiation mechanism in Figure 8 can also be reused. For details, please refer to Figure 8, which will not be described again.

704. For the second service identifier mapped on the first link, the non-access point station in the second multi-link device uses the parameters of the second access type corresponding to the second service identifier in the EDCA parameter set in the first link. Channel competition is performed on the link for the second access type.

The number of second service identifiers may be one or more. The second access type may include at least one of the following: AC_VO, AC_VI, AC_BE, AC_BK.

Optionally, in Figure 7, for the second service identifier mapped on the first link, after the non-access point station in the second multi-link device is triggered to frame scheduling, it is concentrated with the second service according to the MU EDCA parameter. The parameter identifying the corresponding second access type performs channel competition on the first link for the second access type. That is, for the second service identifier mapped on the first link, the non-access point station that receives the trigger frame is on the first link according to the parameters of the second access type corresponding to the second service identifier in the MU EDCA parameter set. Channel contention is performed for the second access type.

It can be seen that in the above technical solution, the service identifier mapped on the first link and the unmapped service identifier on the first link do not share the parameter set. At the same time, the non-access point site in the second multi-link device The parameter set is not shared with non-extremely high throughput sites, which improves the flexibility of parameter settings and does not affect the transmission of service data between the non-access point site and the non-extremely high throughput site. In addition, for the second service identifier mapped on the first link, channel competition is still performed on the first link according to the EDCA parameter set, without changing the existing protocol, which improves forward compatibility.

Among them, when the AP MLD sets the parameters for channel competition to a very low access priority or prohibits upstream channel competition on all links of some non-AP MLD, how to send uplink data through channel competition. Or, when a non-AP MLD is only associated with one link, if the protocol requires the non-AP MLD to compete for a channel, and the parameters for channel competition on the link are set to a very low access priority or Disable uplink channel competition, how to send uplink data through channel competition. In order to solve this problem, the embodiment shown in Figure 8 provides a non-AP MLD negotiation mechanism. Specifically, see FIG. 8 , which is a schematic flowchart of yet another channel competition method provided by an embodiment of the present application. As shown in Figure 8, the method includes but is not limited to the following steps:

801. The non-access point station in the second multi-link device sends the first frame on the first link. The first frame includes the service identifier or access type, and the first frame is used to request the EDCA parameter set.

Correspondingly, the access point in the first multi-link device receives the first frame on the first link. It can be understood that before the non-access point station sends the first frame on the first link, the non-access point station may also generate the first frame.

The number of service identifiers or access types may be one or more, and are not limited here.

Among them, the first frame can be a protected EHT action frame (protected EHT action frame) or an EHT Action frame, which is not limited here.

Optionally, the EDCA parameter set requested in the first frame may include at least one of the following: EDCA parameter set, MU EDCA parameter set, ML EDCA parameter set, and ML MU EDCA parameter set.

Optionally, the first frame also includes at least one of the following: the reason why the non-access point station in the second multi-link device requests the EDCA parameter set, the EDCA parameter set indicated by the non-access point station (that is, the non-access point station EDCA parameter set recommended by the entry site). For example, the reason why the non-access point station in the second multi-link device requests the EDCA parameter set may be: uplink channel competition cannot be performed on all associated links of the second multi-link device; or, all associated links The priority of the upper EDCA parameter set is too low to meet business requirements; or uplink channel competition cannot occur on some links of the second multi-link device due to power save, coexistence, and other reasons. In a possible implementation, the EDCA parameter set indicated by the non-access point station may include at least one of the following: EDCA parameter set, MU EDCA parameter set, ML EDCA parameter set, and ML MU EDCA parameter set. For example, the EDCA parameter set recommended by the non-access point station may be indicated through indication information.

In a possible implementation, the reason why the non-access point station in the second multi-link device requests the EDCA parameter set may be a reason code, such as information (order) in Table 2 equal to 5 ( information). The EDCA parameter set indicated by the non-access point station can be the EDCA parameter set (parameter set) in Table 2, that is, the information with order equal to 6 in Table 2. Optionally, when the EDCA parameter set recommended by the non-access point site is the ML EDCA parameter set, the information with order equal to 6 in Table 2 can be called the ML parameter set. It is understandable that the order of different information in Table 2 can be adjusted, and Table 2 is only an example.

In addition, the first frame may also include at least one type of information (information) with an order equal to 1-4 in Table 2. Among them, the category with the serial number equal to 1 is used to indicate the type of action frame. Specifically, in this embodiment, the category field indicates that the type of the current action frame is a protected EHT action frame; the protected EHT action field with the serial number equal to 2 is used to indicate The subtype of the currently protected EHT actio, specifically in this embodiment, indicates that the first frame is an EDCA parameter request frame, such as an ML EDCA parameter request frame; the dialog token field with a sequence number equal to 3 is selected by the sending site A non-zero value used to identify the first frame of the current session. The TID/AC field with a sequence number equal to 4 can specifically be one of the TID field or the AC field. If it is a TID field, it is used to indicate the TID of the EDCA parameter set requested in the first frame; if it is an AC field, it is used to indicate the AC of the EDCA parameter. It should be noted that the field with the sequence number equal to 4 can be in the form of a bitmap, where each bit represents a TID or AC. Setting a bit to 1 represents a request to update the EDCA parameter set corresponding to the corresponding TID or AC, and setting it to 0 represents no The EDCA parameter set corresponding to the corresponding TID or AC needs to be updated. This field may also directly indicate at least one TID or at least one AC.

Table 2

In a possible implementation, the reason why the non-access point station in the second multi-link device requests the EDCA parameter set may be carried in the EDCA parameter set indicated by the non-access point station.

In addition, the value of the first frame in Table 3 is 6, and its meaning is EDCA parameter request, such as ML EDCA parameter request. Values (values) equal to 0-5 in Table 3 correspond to management frames that have been adopted by the EHT standard but are used for other mechanisms. Since they have nothing to do with this application, they will not be introduced in detail.

table 3

802. The access point in the first multi-link device sends the second frame on the first link.

Correspondingly, the non-access point station in the second multi-link device receives the second frame on the first link.

Optionally, before step 803, the access point in the first multi-link device may also generate a second frame.

In a possible implementation, the second frame includes an EDCA parameter set corresponding to the service identifier or an EDCA parameter set corresponding to the access type. The EDCA parameter set corresponding to the service identifier or the EDCA parameter set corresponding to the access type may include at least one of the following: EDCA parameter set, MU EDCA parameter set, ML EDCA parameter set, and ML MU EDCA parameter set. For example, the EDCA parameter set corresponding to the service identifier or the EDCA parameter set corresponding to the access type can be the EDCA parameter set in Table 4, that is, the information with order equal to 5 in Table 4. It is understandable that the order of different information in Table 4 can be adjusted, and Table 4 is only an example.

In another possible implementation, the second frame includes indication information, and the indication information is used to indicate an EDCA parameter set corresponding to the access type used by the non-access point station in the second multi-link device. For example, the indication information can be 1 bit. Setting this bit to 0 indicates that the non-access point station uses the parameters of the access type in the current MU EDCA parameter set. Setting this bit to 1 indicates that the non-access point station uses the current EDCA. The parameters of this access type in the parameter set. Optionally, the second frame includes a status code, and the status code includes an EDCA parameter set corresponding to the service identifier indicated by the indication information or an EDCA parameter set corresponding to the access type, or the status code includes the indication information. In a possible implementation, the status code may be the status code in Table 4, that is, the information with order equal to 4 in Table 4.

In another possible implementation, the status code in the second frame is rejection or recommendation for disassociation. It should be understood that when the status code is reject, the non-access point station can only use the existing EDCA parameter set of the non-access point station. When the status code indicates disassociation recommendation, it may be because the first multi-link device needs to ensure low-latency services, so when it cannot meet the transmission requirements of all service identifiers of the second multi-link device, the first multi-link device Access points in are recommended to disassociate.

In addition, the second frame may also include at least one type of information with order equal to 1-3 in Table 4. Specifically, the category with the serial number equal to 1 is similar to that in Table 2, and will not be described again here. The protected EHT action field with a sequence number equal to 2 is used to indicate the subtype of the current protected EHT action. Specifically, in this embodiment, it indicates that the second frame is an EDCA parameter response frame, such as an ML EDCA parameter response frame; the dialog token field with a sequence number equal to 3 set to the same The same value in the dialog token field in one frame is used to identify the second frame as responding to the first frame.

Table 4

In addition, the value of the second frame in Table 4 is 7, and its meaning is EDCA parameter response, such as ML EDCA parameter response.

803. The non-access point stations in the second multi-link device compete for channels according to the second frame.

For example, the non-access point station in the second multi-link device uses the EDCA parameter set corresponding to the service identifier in the second frame or the EDCA parameter set corresponding to the access type to compete for the channel. Alternatively, the non-access point station in the second multi-link device uses the EDCA parameter set corresponding to the service identifier indicated by the indication information in the second frame or the EDCA parameter set corresponding to the access type to compete for the channel.

It can be seen that in the above technical solution, the non-access point station in the second multi-link device actively sends the first frame to request the EDCA parameter set from the access point in the first multi-link device, thereby obtaining the The second frame of the access point in the first multi-link device, thereby realizing that when the parameters for channel competition are set to a very low access priority or the uplink channel competition is prohibited, channel processing can be performed based on the response frame. compete.

The AP belonging to the MLD sends a beacon frame or detection response frame, which carries the EDCA parameter set element, optionally carrying the ML EDCA parameter set element or the MU EDCA parameter set element.

The non-AP MLD associated with the MLD is affiliated with a non-access point station that receives a beacon frame or a probe response frame. If the frame carries an ML EDCA parameter set element, the non-access point station uses the ML EDCA parameter set. elements to update CWmin[AC], CWmax[AC], and AIFSN[AC]. CWmin[AC], CWmax[AC] and AIFSN[AC] are parameters used for EDCA competition corresponding to AC, where AC can be one or more of BE, BK, VI and VO. After receiving the AP's basic type trigger frame scheduling and successfully responding, CWmin[AC], CWmax[AC] and AIFSN[AC] are not updated, that is, the ML EDCA parameter set element is still used (instead of the MU EDCA parameter set element ) to perform EDCA competition.

If the frame does not carry the ML EDCA parameter set element, the non-access point station uses the parameters in the EDCA parameter set element to update CWmin[AC], CWmax[AC] and AIFSN[AC]. After receiving the AP's basic type trigger frame scheduling and successfully responding, the non-access point station uses the MU EDCA parameter set element to update CWmin[AC], CWmax[AC] and AIFSN[AC], that is, using MU EDCA Parameters in parameter collection elements undergo EDCA competition. If the non-access point station has never received a MU EDCA parameter set element, the parameters in the default MU EDCA parameter set element in the standard are used to update CWmin[AC], CWmax[AC], and AIFSN[AC].

The above mainly introduces the solution provided by this application from the perspective of interaction between various devices. It can be understood that, in order to realize the above functions, the above-mentioned implementation devices include corresponding hardware structures and/or software modules for executing each function. Persons skilled in the art should easily realize that, with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Professional skills One may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Embodiments of the present application can divide the access point in the first multi-link device or the non-access point site in the second multi-link device into functional modules according to the above method examples. For example, each function can be divided into corresponding functions. Modules can also integrate two or more functions into one processing module. The above integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. In actual implementation, there may be other division methods.

In the case of using an integrated module, see FIG. 9 , which is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 900 can be applied to the method shown in FIG. 5 or FIG. 7 or FIG. 8. As shown in FIG. 9, the communication device 900 includes: a processing module 901 and a transceiver module 902. The processing module 901 may be one or more processors, and the transceiver module 902 may be a transceiver or a communication interface. The communication device may be used to implement any of the above method embodiments involving a non-access point site in the second multi-link device or an access point in the first multi-link device, or to implement any of the above method embodiments. Involves the functions of network elements. The network element or network function can be a network element in a hardware device, a software function running on dedicated hardware, or a virtualized function instantiated on a platform (eg, cloud platform). Optionally, the communication device 900 may also include a storage module 903 for storing program codes and data of the communication device 900 .

In one example, when the communication device serves as a non-access point site in the second multi-link device or is a chip applied in the non-access point site, and performs the above method embodiment by the non-access point site steps to perform. The transceiver module 902 is used to support communication with the access point in the first multi-link device. The transceiver module specifically performs the sending and/or transmission performed by the non-access point station in Figure 5 or Figure 7 or Figure 8. The received actions, such as enabling the non-access point station to perform step 701, and/or other processes of the techniques described herein. The processing module 901 may be used to support the communication device 900 to perform the processing actions in the above method embodiments, for example, to support the non-access point station to perform one or more steps in steps 503, 504, etc., and/or as described herein. Other processes of technology.

Exemplarily, the transceiver module 902 is configured to receive the first frame on the first link. The first frame includes the second enhanced distributed channel access EDCA parameter set. The EDCA parameter set is used for non-extremely high throughput stations to conduct channels. Competition; processing module 901, used for: if an ML EDCA parameter set that is different from the EDCA parameter set in the first frame is identified, the non-access point station in the second multi-link device is in the first link according to the ML EDCA parameter set. Channel competition is performed on the road; if the ML EDCA parameter set is not recognized, the non-access point station in the second multi-link device will not compete for the channel.

As another example, the transceiver module 902 is configured to receive the first frame on the first link, where the first frame includes the first enhanced distributed channel access EDCA parameter set and the EDCA parameter set; the processing module 901 is configured to: If the first service identifier is not mapped on the first link, channel competition is performed on the first link for the first access type according to the parameters of the first access type corresponding to the first service identifier in the ML EDCA parameter set; for If the second service identifier is mapped on the first link, channel competition is performed on the first link for the second access type according to the parameters of the second access type corresponding to the second service identifier in the EDCA parameter set.

As another example, the transceiver module 902 is configured to: send the first frame on the first link, where the first frame includes a service identifier or access type, and the first frame is used to request the EDCA parameter set; on the first link Receive a second frame; wherein, the second frame includes an EDCA parameter set corresponding to the service identifier or an EDCA parameter set corresponding to the access type; or, the second frame includes indication information, and the indication information is used to indicate the second multi-link device. The EDCA parameter set corresponding to the service identifier used by the non-access point station or the EDCA parameter set corresponding to the access type; the processing module 901 is used to perform channel competition according to the second frame.

As another example, the transceiver module 902 is used to receive the first frame on the first link, and the first frame includes the ML EDCA parameter set; the processing module 901 is used to perform channel processing on the first link according to the ML EDCA parameter set. compete.

In one example, when the communication device serves as an access point in the first multi-link device or is a chip applied in the access point, and perform the steps performed by the access point in the above method embodiment. The transceiver module 902 is used to support communication with non-access point stations in the second multi-link device. The transceiver module specifically performs the sending and/or transmission performed by the access point in Figure 5 or Figure 7 or Figure 8. The received actions, such as enabling the access point to perform step 502, and/or other processes of the techniques described herein. The processing module 901 may be used to support the communication device 900 to perform processing actions in the above method embodiments, for example, to support the access point to perform one or more steps in step 501, etc., and/or other processes of the technology described herein.

Exemplarily, the processing module 901 is used to generate a first frame. The first frame includes a first enhanced distributed channel access EDCA parameter set and an EDCA parameter set. The ML EDCA parameter set is used for non-multilink devices in the second multi-link device. The access point site competes for channels, and the EDCA parameter set is used for non-extremely high throughput sites to compete for channels; the transceiver module 902 is used to send the first frame on the first link.

As another example, the processing module 901 is configured to generate a first frame, which includes a first enhanced distributed channel access EDCA parameter set and an EDCA parameter set; for the unmapped first service identifier on the first link, The parameters of the first access type corresponding to the first service identifier in the ML EDCA parameter set are used for the non-access point stations in the second multi-link device to compete for channels for the first access type; for mapping on the first link The second service identifier, and the parameters of the second access type corresponding to the second service identifier in the EDCA parameter set are used for the non-access point stations in the second multi-link device to compete for channels for the second access type; the transceiver module 902, for sending the first frame on the first link.

As another example, the transceiver module 902 is configured to: receive the first frame on the first link, where the first frame includes a service identifier or access type, and the first frame is used to request the EDCA parameter set; on the first link Send a second frame; wherein the second frame includes an EDCA parameter set corresponding to the service identifier or an EDCA parameter set corresponding to the access type; or, the second frame includes indication information, and the indication information is used to indicate the second multi-link device. EDCA parameter set corresponding to the access type used by non-access point sites.

In a possible implementation, when the non-access point station in the second multi-link device or the access point in the first multi-link device is a chip, the transceiver module 902 may be a communication interface, pin or circuit etc. The communication interface can be used to input data to be processed to the processor, and can output the processing results of the processor to the outside. In specific implementation, the communication interface can be a general purpose input output (GPIO) interface, which can communicate with multiple peripheral devices (such as display (LCD), camera (camara), radio frequency (RF) module, antenna, etc. etc.) connection. The communication interface is connected to the processor through a bus.

The processing module 901 may be a processor, and the processor may execute computer execution instructions stored in the storage module, so that the chip executes the method involved in the embodiment of FIG. 5 or FIG. 7 or FIG. 8 .

Further, the processor may include a controller, arithmetic unit, and a register. For example, the controller is mainly responsible for decoding instructions and sending control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, and logical operations. It can also perform address operations and conversions. Registers are mainly responsible for storing register operands and intermediate operation results temporarily stored during instruction execution. In specific implementation, the hardware architecture of the processor can be application specific integrated circuits (ASIC) architecture, microprocessor without interlocked piped stages architecture (MIPS) architecture, advanced reduced instructions Set machine (advanced RISC machines, ARM) architecture or network processor (network processor, NP) architecture, etc. The processor can be single-core or multi-core.

The storage module can be a storage module within the chip, such as a register, cache, etc. The storage module can also be a storage module located outside the chip, such as Read Only Memory (ROM) or other types of static storage devices that can store static information and instructions, Random Access Memory (Random Access Memory, RAM), etc. .

It should be noted that the corresponding functions of the processor and the interface can be realized through hardware design, software design, or a combination of software and hardware. There are no restrictions here.

An embodiment of the present application also provides a communication device, including a processor, a memory, an input interface and an output interface. The interface is used to receive information from other communication devices other than the communication device. The output interface is used to output information to other communication devices other than the communication device. The processor calls the computer program stored in the memory to implement the implementation as shown in Figure 5 or Figure 7 or Figure 8 and any of the embodiments shown.

Embodiments of the present application also provide a chip. The chip includes at least one processor and an interface. The processor is used to read and execute instructions stored in the memory. When the instructions are executed, the chip executes as shown in Figure 5 or Figure 7 or Figure 8 and any embodiment shown.

Embodiments of the present application also provide a computer-readable storage medium. The computer-readable storage medium stores a computer program. The computer program includes program instructions. When executed by the computer, the program instructions cause the computer to execute as shown in Figure 5 or Figure 7 or Figure 8 and any embodiment shown.

An embodiment of the present application also provides a computer program product. When a computer reads and executes the computer program product, the computer executes any of the embodiments shown in Figure 5 or Figure 7 or Figure 8.

The units described above as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the goals of the embodiments of the present application. In addition, each network element unit in various embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or software network element unit.

If the above integrated unit is implemented in the form of a software network element unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part that contributes essentially to the technical solution of the present application, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions. So that a computer device (which may be a personal computer, a terminal device, a cloud server, or an access network device, etc.) executes all or part of the steps of the above methods in various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code. . The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of various equivalent methods within the technical scope disclosed in the present application. Modification or replacement, these modifications or replacements shall be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A channel competition method, characterized in that the method includes:

The access point in the first multi-link device generates a first frame, the first frame includes a first enhanced distributed channel access EDCA parameter set and a second EDCA parameter set, the first EDCA parameter set is used for the first EDCA parameter set. Non-access point sites in the second multi-link device compete for channels, and the second EDCA parameter set is used for non-extremely high throughput sites to compete for channels;

An access point in the first multi-link device sends the first frame on a first link.
The method according to claim 1, characterized in that, any interframe spacing field of the first access type in the first EDCA parameter set is set to 0, and the access point in the first multi-link device does not allow The non-access point stations in the second multi-link device use the parameters of the first access type to compete for channels.
The method according to claim 1 or 2, characterized in that the first frame further includes first indication information;

The first indication information is used to instruct the non-access point station in the second multi-link device to use the first EDCA parameter set to perform channel competition on the first link after triggering frame scheduling; or ,

The first indication information is used to instruct the non-access point station in the second multi-link device to use the second EDCA parameter set to perform channel competition on the first link after triggering frame scheduling; or ,

The first frame also includes a third EDCA parameter set, the third EDCA parameter set is a multi-user EDCA parameter set, and the first indication information is used to indicate non-access in the second multi-link device. After the point station is triggered for frame scheduling, it uses the third EDCA parameter set to compete for a channel on the first link.
The method according to claim 1 or 2, characterized in that the first frame further includes a fourth EDCA parameter set, and the fourth EDCA parameter set is a non-access point in the second multi-link device. The set of parameters used after a site is triggered for frame scheduling.
The method according to claim 1, wherein the first frame further includes second indication information;

The second indication information is used to instruct a non-access point station that is not affiliated with the second multi-link device to use the first EDCA parameter set to perform channel competition on the first link; or,

The second indication information is used to instruct a non-access point station that is not affiliated with the second multi-link device to use the second EDCA parameter set to compete for a channel on the first link;

Wherein, non-access point stations that are not affiliated with the second multi-link device only successfully establish a single link.
The method according to claim 1, characterized in that the second EDCA parameter set is also used for channel competition by non-access point stations that are not affiliated with the second multi-link device. The non-access point station in the second multi-link device only successfully established a single link.
A channel competition method, characterized in that the method includes:

The access point in the first multi-link device generates a first frame, the first frame including a first enhanced distributed channel access EDCA parameter set and a second EDCA parameter set; for the unmapped first link on the first link A service identifier. The parameters of the first access type corresponding to the first service identifier in the first EDCA parameter set are used for the first access type by the non-access point site in the second multi-link device. Perform channel competition; for the second service identifier mapped on the first link, the parameters of the second access type corresponding to the second service identifier in the second EDCA parameter set are used for the second multi-link Non-access point stations in the road equipment compete for channels for the second access type;

An access point in the first multi-link device sends the first frame on the first link.
A channel competition method, characterized in that the method includes:

The access point in the first multi-link device receives a first frame on the first link, the first frame including a service identifier or access Type, the first frame is used to request the EDCA parameter set;

The access point in the first multi-link device sends a second frame on the first link;

Wherein, the second frame includes an EDCA parameter set corresponding to the service identifier or an EDCA parameter set corresponding to the access type; or, the second frame includes indication information, and the indication information is used to indicate the first 2. The EDCA parameter set corresponding to the access type used by non-access point sites in the multi-link device.
The method according to claim 8, characterized in that the first frame further includes at least one of the following: a reason why the non-access point station in the second multi-link device requests the EDCA parameter set, the first frame 2. EDCA parameter set indicated by non-access point stations in multi-link devices.
The method according to claim 8 or 9, characterized in that the second frame includes a status code, and the status code includes the service identifier used by the non-access point station in the second multi-link device. Or the EDCA parameter set corresponding to the access type, or the status code includes the indication information.
A channel competition method, characterized in that the method includes:

The non-access point station in the second multi-link device receives a first frame on the first link, the first frame includes a second enhanced distributed channel access EDCA parameter set, the second EDCA parameter set is Channel competition at non-extremely high-throughput sites;

If a first EDCA parameter set that is different from the second EDCA parameter set in the first frame is identified, the non-access point station in the second multi-link device determines the location of the first EDCA parameter set based on the first EDCA parameter set. Channel competition is performed on the first link;

If the first EDCA parameter set is not recognized, the non-access point stations in the second multi-link device do not compete for channels.
The method according to claim 11, wherein the first frame further includes first indication information;

The first indication information is used to instruct the non-access point station in the second multi-link device to use the first EDCA parameter set to perform channel competition on the first link after triggering frame scheduling; or ,

The first indication information is used to instruct the non-access point station in the second multi-link device to use the second EDCA parameter set to perform channel competition on the first link after triggering frame scheduling; or ,

The first frame also includes a third EDCA parameter set, the third EDCA parameter set is a multi-user EDCA parameter set, and the first indication information is used to indicate non-access in the second multi-link device. After the point station is triggered for frame scheduling, it uses the third EDCA parameter set to compete for a channel on the first link.
The method according to claim 11, characterized in that the first frame further includes a fourth EDCA parameter set, the fourth EDCA parameter set is a non-access point station in the second multi-link device. The set of parameters used after triggering frame scheduling.
The method according to claim 11, wherein the first frame further includes second indication information;

The second indication information is used to instruct a non-access point station that is not affiliated with the second multi-link device to use the first EDCA parameter set to perform channel competition on the first link; or,

The second indication information is used to instruct a non-access point station that is not affiliated with the second multi-link device to use the second EDCA parameter set to compete for a channel on the first link;

Wherein, non-access point stations that are not affiliated with the second multi-link device only successfully establish a single link.
The method according to claim 11, characterized in that the second EDCA parameter set is also used for channel competition by non-access point stations that are not affiliated with the second multi-link device. The non-access point station in the second multi-link device only successfully established a single link.
A channel competition method, characterized in that the method includes:

The non-access point station in the second multi-link device receives a first frame on the first link, the first frame including a first enhanced distributed channel access EDCA parameter set and a second EDCA parameter set;

For the first service identifier that is not mapped on the first link, the non-access point site in the second multi-link device uses the first service identifier corresponding to the first service identifier in the first EDCA parameter set. Parameters of an access type perform channel competition on the first link for the first access type;

For the second service identifier mapped on the first link, the non-access point site in the second multi-link device then determines the second service identifier corresponding to the second service identifier in the second EDCA parameter set. The parameters of the access type perform channel competition on the first link for the second access type.
A channel competition method, characterized in that the method includes:

The non-access point station in the second multi-link device sends a first frame on the first link, the first frame includes a service identifier or an access type, and the first frame is used to request an EDCA parameter set;

A non-access point station in the second multi-link device receives a second frame on the first link;

Wherein, the second frame includes an EDCA parameter set corresponding to the service identifier or an EDCA parameter set corresponding to the access type; or, the second frame includes indication information, and the indication information is used to indicate the first 2. The EDCA parameter set corresponding to the service identifier used by the non-access point site in the multi-link device or the EDCA parameter set corresponding to the access type;

The non-access point stations in the second multi-link device compete for channels according to the second frame.
The method according to claim 17, characterized in that the first frame further includes at least one of the following: a reason why the non-access point station in the second multi-link device requests the EDCA parameter set, the first frame 2. EDCA parameter set indicated by non-access point stations in multi-link devices.
The method according to claim 17 or 18, characterized in that the second frame includes a status code, and the status code includes the service identifier used by the non-access point station in the second multi-link device. Or the EDCA parameter set corresponding to the access type, or the status code includes the indication information.
A communication device, characterized in that the communication device includes a module for executing the method according to any one of claims 1-19.
A chip, characterized in that the chip includes at least one processor and an interface, the processor is used to read and execute instructions stored in a memory, and when the instructions are executed, the chip executes the claims The method described in any one of 1-19.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, and the computer program includes program instructions. When executed by a computer, the program instructions cause the computer to execute the claims. The method described in any one of 1-19.