WO2023185394A1

WO2023185394A1 - Bss color collision resolution method and apparatus, and device and storage medium

Info

Publication number: WO2023185394A1
Application number: PCT/CN2023/079989
Authority: WO
Inventors: 徐彦超; 余庆华; 王泷
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-04-02
Filing date: 2023-03-07
Publication date: 2023-10-05
Also published as: CN114745734A

Abstract

The present application relates to the technical field of communications. Disclosed are a BSS color collision resolution method and apparatus, and a device and a storage medium. The method is executed by an AP MLD, and the method comprises: when BSS color selection is performed on a first AP in an AP MLD, selecting a BSS color different from BSS colors of other APs, wherein the other APs are APs other than the first AP in the AP MLD. On the basis of the technical solutions shown in the embodiments of the present application, misjudgment of BSS color collision can be avoided.

Description

BSS color conflict resolution methods, devices, equipment and storage media

This application claims priority to the patent application filed on April 2, 2022 with the application number 202210351914.7 and the invention name "BSS color conflict resolution method, device, equipment and storage medium", the entire content of which is incorporated herein by reference. Applying.

Technical field

This application relates to the field of communication technology, and in particular to a Basic Service Set (BSS) color conflict resolution method, device, equipment and storage medium.

Background technique

In the communication system, a BSS color mechanism is as follows: by adding the BSS color field in the Physical Layer Protocol Packet Unit (PHY Protocol Data Unit, PPDU) header (Header), the data from different BSSs are "colored" to provide each Each BSS is assigned a color that identifies a group of BSSs that should not be interfered with. BSS colors are used for identification of co-channel transmissions.

According to the provisions on BSS colors in relevant protocol standards: on the same channel, if two BSSs cover each other, the two BSSs must choose different BSS colors. Therefore, when a BSS discovers that there is a BSS Color collision, that is, when other BSSs use the same BSS color value on the same channel, the BSS must turn off its BSS color-related functions and It is necessary to choose another appropriate BSS color value to be different from the BSS colors of other surrounding BSSs on the same channel to avoid the impact of the same BSS color on the identification of co-channel transmissions.

In some scenarios, although the above BSS color conflict regulations are met, the same BSS color value will not affect the identification of co-channel transmission. In this case, it is easy to cause misjudgment of BSS color conflict.

Contents of the invention

Embodiments of the present application provide a BSS color conflict resolution method, device, equipment and storage medium. The technical solution is as follows.

According to one aspect of the present application, a BSS color conflict resolution method is provided. The method is executed by an access point (Access Point, AP) multi-link device (Multiple Links Device, MLD). The method includes:

When selecting the BSS color of the first AP in the AP MLD, select a BSS color that is different from the BSS colors of other APs; the other APs are APs other than the first AP in the AP MLD. .

According to one aspect of the present application, a BSS color conflict resolution method is provided, which method is provided by MLD Execution, the method includes:

When the first node device in the MLD receives a data packet carrying a BSS color field, and the BSS identification field of the data packet has the same value as the BSS identification field of the BSS where other node devices are located, when the When the BSS color field of the data packet has the same value as the BSS color field of the first node device, it is determined that there is no BSS color conflict; the other node device is a node in the MLD other than the first node device. equipment.

According to one aspect of the present application, a BSS color conflict resolution method is provided. The method is executed by a station (Station, STA) MLD. The method includes:

When the first STA in the STA MLD negotiates with the peer device the channel where the Tunneled Direct-Link Setup (TDLS) link is located, the channel where other APs are located is not selected;

Wherein, the other APs are APs other than the second AP in the AP MLD where the second AP is located; the second AP is the AP connected to the first STA.

According to another aspect of the present application, a BSS color conflict resolution device is provided, which device includes: a color selection module;

The color selection module is used to select a BSS color that is different from the BSS colors of other APs when selecting the BSS color of the first AP; the other APs are the ones in the device other than the first AP. AP.

According to another aspect of the present application, a BSS color conflict resolution device is provided, which device includes: a conflict judgment module;

The conflict judgment module is configured to: when the first node device receives a data packet carrying a BSS color field, and the BSS identification field of the data packet has the same value as the BSS identification field of the BSS where other node devices are located, When the value of the BSS color field of the data packet is the same as the value of the BSS color field of the first node device, it is determined that there is no BSS color conflict; the other node device is one of the devices except the first node device. external node device.

According to another aspect of the present application, a BSS color conflict resolution device is provided, which device includes: a channel negotiation module;

The channel negotiation module is configured to not select the channel of other APs when the first STA negotiates the channel of the TDLS link with the peer device;

According to another aspect of the present application, an AP MLD is provided, and the AP MLD includes: a processor;

The processor is configured to select a BSS color different from the BSS colors of other APs when selecting the BSS color of the first AP in the AP MLD; the other APs are in the AP MLD, APs other than the first AP.

According to another aspect of the present application, an MLD is provided, the MLD including: a processor;

The processor is configured for the first node device in the MLD to receive a data packet carrying a BSS color field, and the BSS identification field of the data packet has the same value as the BSS identification field of the BSS where other node devices are located. In the case of , when the BSS color field of the data packet has the same value as the BSS color field of the first node device, it is determined that there is no BSS color conflict; the other node devices are in the MLD, except for the first node device. A node device other than a node device.

According to another aspect of the present application, a STA MLD is provided, the STA MLD including: a processor;

The processor is configured to not select the channel where other APs are located when the first STA in the STA MLD negotiates the channel where the TDLS link is located with the peer device;

According to another aspect of the present application, a computer-readable storage medium is provided. The storage medium stores at least one instruction, at least one program, a code set or an instruction set. The at least one instruction, the at least one program , the code set or instruction set is loaded and executed by the processor to implement the BSS color conflict resolution method as described above.

According to another aspect of the present application, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the BSS color conflict resolution method provided in the above optional implementation.

According to another aspect of the embodiment of the present application, a chip is provided. The chip includes programmable logic circuits and/or program instructions. When the chip is run, it is used to implement the BSS color conflict resolution method as described above. .

The beneficial effects brought by the technical solutions provided by the embodiments of the present application include at least the following beneficial effects:

In the case where the TDLS link is on the same channel as other APs in the AP MLD, and the BSS color corresponding to the TDLS link is the same as the BSS color of other APs, other APs or STAs corresponding to other APs mistakenly believe that a BSS color conflict has occurred. problem, in the embodiment of the present application, the above situation can be avoided by selecting the BSS color or channel, or avoiding misjudgment for the above situation, thereby improving the BSS color conflict detection mechanism. In addition, since it is possible to avoid mistakenly determining that a BSS color conflict has occurred, there is no need to execute the BSS color reselection mechanism subsequent to the BSS color conflict, thus saving resources.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of a wireless local area network provided by an embodiment of the present application;

Figure 2 is a schematic diagram of the Media Access Control (MAC) address of a multi-link device provided by an embodiment of the present application;

Figure 3 is a schematic diagram of links between devices provided by an embodiment of the present application;

Figure 4 is a schematic diagram of links between devices provided by an embodiment of the present application;

Figure 5 is a schematic diagram of links between devices provided by an embodiment of the present application;

Figure 6 is a flow chart of a BSS color conflict resolution method provided by an embodiment of the present application;

Figure 7 is a schematic diagram of a BSS color conflict resolution method provided by an embodiment of the present application;

Figure 8 is a flow chart of a BSS color conflict resolution method provided by an embodiment of the present application;

Figure 9 is a schematic diagram of a BSS color conflict resolution method provided by an embodiment of the present application;

Figure 10 is a flow chart of a BSS color conflict resolution method provided by an embodiment of the present application;

Figure 11 is a schematic diagram of a BSS color conflict resolution method provided by an embodiment of the present application;

Figure 12 is a block diagram of a BSS color conflict resolution device provided by an embodiment of the present application;

Figure 13 is a block diagram of a BSS color conflict resolution device provided by an embodiment of the present application;

Figure 14 is a block diagram of a BSS color conflict resolution device provided by an embodiment of the present application;

Figure 15 is a schematic structural diagram of an MLD provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

The network architecture and business scenarios described in the embodiments of this application are to more clearly explain the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art will know that with the network architecture evolution and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

Please refer to Figure 1, which shows a block diagram of a wireless local area network provided by an exemplary embodiment of the present application. The wireless local area network may include: STA MLD 10, AP MLD 20 and STA30.

The STA MLD 10 contains one or more logical entities STA, which may be a wireless communication chip, a wireless sensor or a wireless communication terminal. For example, mobile phones that support Wireless Fidelity (WiFi) communication function, tablet computers that support WiFi communication function, set-top boxes that support WiFi communication function, smart TVs that support WiFi communication function, smart wearable devices that support WiFi communication function, Vehicle-mounted communication equipment that supports WiFi communication functions and computers that support WiFi communication functions.

AP MLD 20 contains one or more logical entity APs. Among them, AP can be the access point for mobile users to enter the wired network. It is mainly deployed inside homes, buildings and campuses. The typical coverage radius is tens of meters to hundreds of meters. Of course, it can also be deployed outdoors. The AP is equivalent to a bridge connecting the wired network and the wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet. Specifically, the AP can be a terminal device or network device with a WiFi chip.

STA 30 is a traditional single-link STA. STA can be a wireless communication chip, wireless sensor or wireless communication terminal. For example, mobile phones that support WiFi communication function, tablet computers that support WiFi communication function, set-top boxes that support WiFi communication function, smart TVs that support WiFi communication function, smart wearable devices that support WiFi communication function, and vehicle-mounted communication devices that support WiFi communication function and computers that support WiFi communication functions.

In the embodiment of this application, multiple links are established between the STA MLD 10 and the AP MLD 20. For example, there are link 1 and link 2 between STA MLD 10 and AP MLD 20. STA MLD 10 includes: STA1 and STA2. AP MLD 20 includes: AP1 and AP2. STA1 and STA2 exchange data with AP1 and AP2 respectively. Transmission, that is, AP1 and AP2 are the peer logical entities of STA1 and STA2 respectively, and their corresponding links are link 1 and link 2 respectively.

In the embodiment of the present application, STA 30 has established a link with an AP in AP MLD 20, and the AP has also established a link with an STA in STA MLD 10. Therefore, the STA in the above STA MLD 10 and TDLS links can be established between STAs 30.

In the embodiment of this application, STA MLD 10, AP MLD 20 and STA 30 all support the 802.11 standard. It can be understood that the STA MLD 10, AP MLD 20 and STA 30 in the embodiment of this application can also support the evolution standard of the 802.11 standard, and can also support other communication standards. For example, it supports 802.11be and subsequent versions.

Before introducing the technical solution of this application, some technical knowledge involved in this application will be introduced and explained.

In the relevant standard protocols, functions that can support multiple links (Multiple Links) are defined. According to the definition of communication ends in the standard protocol, one is STA MLD and the other is AP MLD. STA MLD and AP MLD that have established multi-links with each other can take advantage of multi-links to send and receive data on multiple links to achieve high throughput/low latency and other advantages.

In traditional single-link devices, each single-link device has a MAC address, and this single-link device can be identified by this single MAC address. In multi-link devices defined in relevant standards, because there will be multiple links in a multi-link device, each link has an independent MAC address, and a multi-link device also has a single multi-link device. Link device MAC address (MLD MAC address).

Figure 2 shows a reference model of a multi-link device. As shown in Figure 2, there are two links between two multi-link devices: link 1 and link 2, and each multi-link device has a lower MAC layer), there is an independent link MAC address (Link MAC address) on each link, or wireless medium (Wireless Medium, WM) MAC address, and there is an upper MAC (Upper MAC layer). A single MLD MAC address.

In the relevant standard protocols, the BSS color values of the APs on their respective links in the AP MLD are selected independently. Among them, the BSS color mechanism is a co-frequency transmission identification mechanism introduced in relevant standard protocols. It "colors" data from different BSSs by adding the BSS color field in the PHY message header (PPDU Header) to provide each The BSS assigns a color, which identifies a group of BSSs that should not be interfered with. The receiving end can early identify interfering signals transmitted on the same frequency and stop receiving, avoiding wasting transceiver time. If the colors are the same, it is considered to be an interference signal in the same BSS; if the colors are different, it is considered that there is no interference between the two, and two WiFi devices can transmit in parallel on the same channel and frequency.

According to the regulations on BSS colors in the current standard protocol, if two BSSs cover each other on the same channel, the two BSSs must choose different BSS colors. Therefore, when a BSS finds a BSS color conflict, that is, when it finds that other BSS uses the same BSS color value, the BSS must turn off its BSS color-related functions and select another appropriate BSS color value. A BSS that is a different color than the surrounding BSS on the same channel.

In the relevant standard protocols, a TDLS link can be established between two STAs connected to any AP in the AP MLD. On this TDLS link, the two STAs can directly transmit data to each other without going through the AP.

As shown in Figure 3, a STA MLD contains two STAs: STA1 and STA2, and an AP MLD contains two APs: AP1 and AP2, which work on link 1 and link 2 respectively. At the same time, there is a traditional STA3. Moreover, a TDLS link is established between STA1 and STA3. According to relevant standard protocols, the Basic Service Set Identifier (BSSID) and BSS color carried in the packets exchanged on the TDLS link between STA1 and STA3 are the BSSID and BSS color of AP1.

According to the rules in the current standard protocol, the link between STA1 and AP1 uses their respective link MAC addresses for mutual data exchange; on the TDLS link between STA1 and STA3, STA1 belongs to one STA MLD, and STA1 uses its MLD MAC address interacts with STA3 for mutual data.

Because in the current standard protocol, the BSS colors of APs on different links in the AP MLD are independently selected, there will be a situation where the BSS color values of APs on different links are the same; that is, as shown in Figure 4 and As shown in Figure 5, the BSS color values of AP1 and AP2 will be the same.

If the TDLS link negotiation between STA1 and STA3 works on the same channel as link 1, some MAC addresses and BSS colors on different links will be as shown in Figure 4. The BSS colors of the TDLS link and link 1 The BSS color of link 2 is the same, BSS_Color_1, and the BSS color of link 2 is also BSS_Color_1.

The TDLS protocol allows two STAs that establish a TDLS link to negotiate with each other the channel where the TDLS link is located. In this way, when STA1 and STA3 perform TDLS channel negotiation, if the channel of the TDLS link is negotiated to be the same as the channel of link 2, a situation will occur as shown in Figure 5. The BSS color of the TDLS link and The BSS color of link 1 is the same, BSS_Color_1, and the BSS color of link 2 is also BSS_Color_1.

According to the current BSS color conflict detection mechanism, as shown in Figure 5, since the TDLS link and link 2 are on the same channel and belong to different BSSs, but use the same BSS color, both AP2 and STA2 will think that there is a conflict at this time. BSS color conflict occurs.

It should be understood that in the situation shown in Figure 5, STA3 corresponding to the TDLS link and STA2 corresponding to link 2 are in the same STA MLD, and STA3 is within the communication range of the AP MLD where AP2 corresponding to link 2 is located. In this way, using the same BSS color will not affect the co-channel transmission identification of the STA in the STA MLD or the AP in the AP MLD. Therefore, the situation shown in Figure 5 can not be considered to have a BSS color conflict.

In order to solve the above problem of incorrect judgment of BSS color conflict, embodiments of the present application provide the following technical solutions. Below, the technical solutions provided by this application are introduced and explained through several embodiments.

Technical solution one

Please refer to Figure 6, which shows a flow chart of a BSS color conflict resolution method provided by an embodiment of the present application. This method can be applied to the wireless LAN shown in Figure 1 and is performed by the AP MLD in the wireless LAN. The method may include the following steps:

Step 602: When selecting the BSS color of the first AP in the AP MLD, select a BSS color that is different from the BSS colors of other APs; the other APs are APs other than the first AP in the AP MLD.

It should be understood that the AP MLD includes multiple APs, and the first AP is any AP in the AP MLD.

In this embodiment, when any AP in the AP MLD selects a BSS color, the BSS color it selects must be different from the BSS colors of other APs in this AP MLD.

In one embodiment of the present application, there is a target AP in the AP MLD, and a TDLS link is established between the two STAs connected to the target AP. The channel where the TDLS link is located is connected to other channels in the AP MLD except the target AP. The AP is on the same channel.

It should be understood that in this embodiment, the first AP is any AP in the AP MLD. The first AP can be the target AP with a TDLS link established between the connected STAs, or it can be other APs other than the target AP. The other APs are APs other than the target AP in the AP MLD.

For example, with reference to Figure 3, a TDLS link is established between STA1 and STA3 connected to AP1. AP1 is the target AP and AP2 is the other AP. The first AP includes: AP1 and AP2, step 602 may It can be executed by AP1 or AP2.

That is, when a TDLS link is established between two STAs connected to an AP in the AP MLD, and the channel of this TDLS link is negotiated to be the same as the channel of other APs in the AP MLD, the AP MLD When selecting the BSS color for the AP in the AP, you need to ensure that it is different from the BSS colors of other APs.

It should be understood that according to the above step 602, since any AP in the AP MLD selects a BSS color, the BSS color it selects must be different from the BSS colors of other APs in this AP MLD. Therefore, the BSS corresponding to the TDLS link When the color is the same as the BSS color of the target AP in the AP MLD, the BSS color corresponding to the TDLS link will not be the same as the BSS color of other APs other than the target AP in the AP MLD, thereby preventing other APs or other APs from corresponding The STA mistakenly believes that a BSS color conflict occurs.

To sum up, according to the technical solution provided by this embodiment, when any AP in the AP MLD selects a BSS color, the BSS color it selects must be different from the BSS colors of other APs in the AP MLD, thereby avoiding TDLS errors. When the link is on the same channel as other APs, because the BSS color corresponding to the TDLS link is the same as the BSS color of other APs in the AP MLD, other APs or STAs corresponding to other APs mistakenly believe that a BSS color conflict has occurred, which improves the BSS Mechanism for color conflict detection.

In addition, the technical solution provided by this embodiment can avoid mistakenly determining that a BSS color conflict has occurred, thereby eliminating the need to execute a subsequent BSS color reselection mechanism after the BSS color conflict, thus saving resources.

For example, the above technical solution 1 will be described with reference to FIG. 7 .

As shown in Figure 7, a TDLS link is established between STA1 and STA3, and link 2 is established between STA2 and AP2. The TDLS link between STA1 and STA3 is negotiated to work on the same channel as link 2.

Among them, the BSS color of the TDLS link is the same as the BSS color of link 1, which is BSS_Color_1, while the BSS color of link 2 is BSS_Color_2. Therefore, the BSS color of the TDLS link is different from the BSS color of link 2, thereby avoiding the situation that the TDLS link and link 2 are on the same channel and belong to different BSSs, but use the same BSS color, thus avoiding STA2 or AP2 incorrectly determines that a BSS color conflict has occurred in the above situation.

Technical solution two

Please refer to Figure 8, which shows a flow chart of a BSS color conflict resolution method provided by an embodiment of the present application. This method can be applied to the wireless LAN shown in Figure 1 and is executed by the MLD in the wireless LAN. The method may include the following steps:

Step 802: When the first node device in the MLD receives the data packet carrying the BSS color field, and the BSS identification field of the data packet has the same value as the BSS identification field of the BSS where other node devices are located, when the value of the BSS identification field of the data packet is the same, The value of the BSS color field and the BSS color field of the first node device If they are the same, it is determined that there is no BSS color conflict; the other node devices are node devices in the MLD other than the first node device.

It should be understood that the MLD includes multiple node devices, and the first node device is any node device in the MLD.

In this embodiment, when determining whether a BSS color conflict occurs, if a data packet carrying a BSS color field is received, and the BSS identification field in the data packet is the same as the BSS identification field of the BSS where other node devices in the MLD are located, At this time, even if the BSS color of this data packet is the same as the BSS color of the current node device, it still needs to be judged that there is no BSS color conflict at this time.

For example, the MLD is AP MLD, and the node device is AP. That is, step 802 can be implemented by the AP MLD. When an AP in the AP MLD receives a data packet, it is determined according to step 802 whether a BSS color conflict occurs.

For example, the MLD is STA MLD, and the node device is STA. That is, step 802 can be implemented by the STA MLD. When a certain STA in the STA MLD receives a data packet, it is determined according to step 802 whether a BSS color conflict occurs.

Among them, the BSS identification field is a field used to identify the BSS. In an embodiment of the present application, the BSS identification field includes: BSSID field.

In one embodiment of the present application, there is a target AP in the AP MLD, and a TDLS link is established between the two station STAs connected to the target AP. The channel where the TDLS link is located is identical to the channel in the AP MLD other than the target AP. Other APs are on the same channel.

That is, when a TDLS link is established between two STAs connected to an AP in the AP MLD, and the channel of this TDLS link is negotiated to be the same as the channel of other APs in the AP MLD, the AP MLD When the AP in the MLD or the STA at the opposite end receives the data packet, it needs to determine whether a BSS color conflict occurs according to step 802.

It should be understood that according to the above step 802, when a TDLS link is established between two STAs connected to an AP in the AP MLD, and the channel of this TDLS link is negotiated to be consistent with the channels of other APs in the AP MLD. At the same time, even if the BSS color corresponding to the TDLS link is the same as the BSS color of the other APs mentioned above, it is still judged that there is no BSS color conflict at this time.

In summary, according to the technical solution provided by this embodiment, when determining whether a BSS color conflict occurs, if the BSS identification field in the received data packet is the same as the BSS identification field of the BSS where other node devices in the MLD are located, it indicates that The data packet may come from the TDLS link corresponding to other node devices in the MLD. In this case, even if the BSS color of this data packet is the same as the BSS color of the current node device, it is still necessary to determine that there is no BSS color conflict at this time to avoid the above-mentioned The situation incorrectly determined that a BSS color conflict had occurred.

In addition, the technical solution provided by this embodiment can avoid incorrect judgments about the occurrence of BSS colors. Color conflicts eliminate the need to execute the subsequent BSS color reselection mechanism after BSS color conflicts, saving resources.

For example, the above technical solution 2 will be described with reference to FIG. 9 .

As shown in Figure 9, a TDLS link is established between STA1 and STA3, and link 2 is established between STA2 and AP2. The TDLS link between STA1 and STA3 is negotiated to work on the same channel as link 2.

Among them, the BSS color of the TDLS link is the same as the BSS color of link 1, which is BSS_Color_1, and the BSS color of link 2 is also BSS_Color_1. In this case, since the BSSID field of the data packet on the TDLS link is BSSID1, which is the same value as the BSSID field corresponding to STA1/AP1, even if STA2 or AP2 receives the data packet on the TDLS link between STA1 and STA3 , it will also be considered that no BSS color conflict occurs.

Technical solution three

Please refer to Figure 10, which shows a flow chart of a BSS color conflict resolution method provided by an embodiment of the present application. This method can be applied to the wireless LAN shown in Figure 1 and is executed by the STA MLD in the wireless LAN. The method may include the following steps:

Step 1002: When the first STA in the STA MLD negotiates the channel where the TDLS link is located with the peer device, the channel where the other AP is located is not selected; among them, the other AP is in the AP MLD where the second AP is located, and the second AP The second AP is the AP connected to the first STA.

In this embodiment, the STA MLD includes the first STA. The first STA has established a TDLS link and can negotiate the channel where the TDLS link is located with the peer device.

In this embodiment, when any of the two STAs that need to establish a TDLS link belongs to a STA MLD, this STA needs to negotiate the channel where the TDLS link is located with the opposite STA of its TDLS link. , do not select the channel where the AP connected to this STA is located or any other AP in the MLD.

It should be understood that according to the above step 1002, since the STA in the STA MLD negotiates the channel of the TDLS link with the peer STA of its TDLS link, it should not select any other AP in the MLD where the AP connected to the STA is located. Therefore, other APs or STAs corresponding to other APs will not receive data packets on the TDLS link, thereby preventing other APs or STAs corresponding to other APs from receiving data packets of the same BSS color on the TDLS link. , mistakenly thinking that a BSS color conflict occurs.

To sum up, according to the technical solution provided by this embodiment, when any one of the two STAs that need to establish a TDLS link belongs to a STA MLD, this STA needs to negotiate with the opposite STA of its TDLS link. When the channel of the TDLS link is located, do not select the channel of any other AP in the AP MLD where the AP connected to this STA is located, thereby avoiding the BSS corresponding to the TDLS link. When the color is the same as the BSS color of other APs in the AP MLD, because the TDLS link is on the same channel as other APs, other APs or STAs corresponding to other APs mistakenly believe that a BSS color conflict has occurred, which improves the BSS color conflict detection mechanism. .

By way of example, the above technical solution 3 will be described with reference to FIG. 11 .

As shown in Figure 11, a TDLS link is established between STA1 and STA3, and link 2 is established between STA2 and AP2.

When negotiating the channel of the TDLS link between STA1 and STA3, exclude the channel where link 2 is located. Therefore, the channel of the TDLS link is different from the channel of link 2, thereby avoiding the situation that the TDLS link and link 2 are on the same channel, belong to different BSSs, but use the same BSS color, and thus avoid the above-mentioned The situation incorrectly determined that a BSS color conflict had occurred.

It can be understood that the above method embodiments can be implemented individually or in combination, which is not limited by the embodiments of the present application.

The following are device embodiments of the present application. For details that are not described in detail in the device embodiments, reference may be made to the corresponding records in the above method embodiments and will not be described again here.

Figure 12 shows a schematic structural diagram of a BSS color conflict resolution device provided by an exemplary embodiment of the present application. The device can be implemented as all or part of the AP MLD through software, hardware, or a combination of the two. The device includes: a color selection module 1202;

The color selection module 1202 is configured to select a BSS color that is different from the BSS colors of other APs when selecting the BSS color of the first AP; the other APs are the ones in the device except the first AP. AP.

In an optional embodiment, there is a target AP in the device, a TDLS link is established between the two station STAs connected to the target AP, and the channel where the TDLS link is located is different from the channel in the device. APs other than the target AP are on the same channel.

Figure 13 shows a schematic structural diagram of a BSS color conflict resolution device provided by an exemplary embodiment of the present application. This device can be implemented as all or part of the MLD through software, hardware, or a combination of both. The device includes: a conflict judgment module 1302;

The conflict judgment module 1302 is used when the first node device receives a data packet carrying a BSS color field, and the BSS identification field of the data packet has the same value as the BSS identification field of the BSS where other node devices are located. , when the BSS color field of the data packet has the same value as the BSS color field of the first node device, it is determined that there is no BSS color conflict; the other node device is the In the above device, a node device other than the first node device.

In an optional embodiment, the device is an AP MLD; or, the device is a STA MLD.

In an optional embodiment, there is a target AP in the AP MLD, a TDLS link is established between two STAs connected to the target AP, and the channel where the TDLS link is located is the same as the channel in the AP MLD. The channels of other APs except the target AP are the same.

Figure 14 shows a schematic structural diagram of a BSS color conflict resolution device provided by an exemplary embodiment of the present application. This device can be implemented as all or part of the STA MLD through software, hardware, or a combination of both. The device includes: channel negotiation module 1402;

The channel negotiation module 1402 is configured to not select the channel of other APs when the first STA negotiates the channel of the TDLS link with the peer device;

Please refer to Figure 15, which shows a schematic structural diagram of an MLD provided by an embodiment of the present application. The MLD may be a STA MLD or an AP MLD. The MLD 1500 may include: a processor 1501, a transceiver 1502, and a memory 1503.

The processor 1501 includes one or more processing cores. The processor 1501 executes various functional applications by running software programs and modules.

The transceiver 1502 can be used to receive and send information, and the transceiver 1502 can be a communication chip.

The memory 1503 can be used to store a computer program, and the processor 1501 is used to execute the computer program to implement various steps performed by the MLD in the above method embodiments.

In addition, the memory 1503 can be implemented by any type of volatile or non-volatile storage device or their combination. Volatile or non-volatile storage devices include but are not limited to: Random-Access Memory (RAM) And read-only memory (Read-Only Memory, ROM), Erasable Programmable Read-Only Memory (EPROM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), flash memory or other solid-state storage technology, compact disc (Compact Disc Read-Only Memory, CD-ROM), high-density digital video disc (Digital Video Disc, DVD) or other optical storage, tape cassette, tape, disk storage or other magnetic storage device.

This application also provides a computer-readable storage medium, which stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is loaded by the processor. and execute to achieve the BSS color conflict resolution provided by each of the above method embodiments. Solution.

The present application also provides a computer program product or computer program, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the BSS color conflict resolution method provided in the above optional implementation.

This application also provides a chip, which includes programmable logic circuits and/or program instructions, and is used to implement the above BSS color conflict resolution method when the chip is running.

The processor in the embodiment of the present application includes: Application Specific Integrated Circuit (Application Specific Integrated Circuit, ASIC).

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship. It should also be understood that the "instruction" mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation. It should also be understood that the "correspondence" mentioned in the embodiments of this application can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed. , the relationship between configuring and being configured. It should also be understood that the "predefined", "protocol agreement", "predetermined" or "predefined rules" mentioned in the embodiments of this application can be preset in the equipment (for example, including network equipment and terminal equipment). This is achieved by saving corresponding codes, tables or other methods that can be used to indicate relevant information. This application does not limit the specific implementation methods. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of this application, the "protocol" may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this. .

Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by instructing the relevant hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage medium can be read-only memory, magnetic disk or optical disk, etc.

The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. Inside.

Claims

A basic service set BSS color conflict resolution method, characterized in that the method is executed by the access point multi-link device AP MLD, and the method includes:

When selecting the BSS color of the first AP in the AP MLD, select a BSS color that is different from the BSS colors of other APs; the other APs are APs other than the first AP in the AP MLD. .
The method according to claim 1, characterized in that:

There is a target AP in the AP MLD. A direct tunnel link is established between the two site STAs connected to the target AP to connect the TDLS link. The channel where the TDLS link is located is the same as the channel in the AP MLD except for APs other than the target AP are on the same channel.
A basic service set BSS color conflict resolution method, characterized in that the method is executed by a multi-link device MLD, and the method includes:

When the first node device in the MLD receives a data packet carrying a BSS color field, and the BSS identification field of the data packet has the same value as the BSS identification field of the BSS where other node devices are located, when the When the BSS color field of the data packet has the same value as the BSS color field of the first node device, it is determined that there is no BSS color conflict; the other node device is a node in the MLD other than the first node device. equipment.
The method according to claim 3, characterized in that:

The MLD is an access point multi-link device AP MLD;

or,

The MLD is the site multi-link device STA MLD.
The method according to claim 4, characterized in that:

There is a target AP in the AP MLD. A direct tunnel link is established between the two site STAs connected to the target AP to connect the TDLS link. The channel where the TDLS link is located is the same as the channel in the AP MLD except for APs other than the target AP are on the same channel.
A basic service set BSS color conflict resolution method, characterized in that the method is executed by the site multi-link device STA MLD, and the method includes:

When the first STA in the STA MLD negotiates with the peer device the channel where the tunnel direct link is connected to the TDLS link, the channel where the other access point AP is located is not selected;

Wherein, the other APs are APs other than the second AP in the AP MLD where the second AP is located; the second AP is the AP connected to the first STA.
A basic service set BSS color conflict resolution device, characterized in that the device includes: a color selection module;

The color selection module is used to select a BSS color that is different from the BSS colors of other APs when selecting the BSS color of the first AP; the other APs are the ones in the device other than the first AP. AP.
The device according to claim 7, characterized in that:

There is a target AP in the device, and a direct tunnel link is established between the two station STAs connected to the target AP to connect the TDLS link. The channel where the TDLS link is located is different from the channel in the device except for the APs other than the target AP are on the same channel.
A basic service set BSS color conflict resolution device, characterized in that the device includes: a conflict judgment module;

The conflict judgment module is configured to: when the first node device receives a data packet carrying a BSS color field, and the BSS identification field of the data packet has the same value as the BSS identification field of the BSS where other node devices are located, When the value of the BSS color field of the data packet is the same as the value of the BSS color field of the first node device, it is determined that there is no BSS color conflict; the other node device is one of the devices except the first node device. external node device.
The device according to claim 9, characterized in that:

The device is an access point multi-link device AP MLD;

or,

The device is a site multi-link device STA MLD.
The device according to claim 10, characterized in that:

There is a target AP in the AP MLD. A direct tunnel link is established between the two site STAs connected to the target AP to connect the TDLS link. The channel where the TDLS link is located is the same as the channel in the AP MLD except for APs other than the target AP are on the same channel.
A basic service set BSS color conflict resolution device, characterized in that the device includes: a channel negotiation module;

The channel negotiation module is configured to not select the channel where other access points AP is located when the first STA negotiates with the peer device the channel where the tunnel direct link is connected to the TDLS link;

Wherein, the other APs are APs other than the second AP in the AP MLD where the second AP is located; the second AP is the AP connected to the first STA.
An access point multi-link device AP MLD, characterized in that the AP MLD includes: a processor;

The processor is configured to select a BSS color different from the BSS colors of other APs when selecting the BSS color of the first AP in the AP MLD; the other APs are in the AP MLD, except for the AP other than the first AP.
A multi-link device MLD, characterized in that the MLD includes: a processor;

The processor is configured for the first node device in the MLD to receive a data packet carrying a BSS color field, and the BSS identification field of the data packet has the same value as the BSS identification field of the BSS where other node devices are located. In the case of , when the BSS color field of the data packet has the same value as the BSS color field of the first node device, it is determined that there is no BSS color conflict; the other node devices are in the MLD, except for the first node device. A node device other than a node device.
A site multi-link device STA MLD, characterized in that the STA MLD includes: a processor;

The processor is configured to not select the channel where other access points AP is located when the first STA in the STA MLD negotiates with the peer device the channel where the tunnel direct link is connected to the TDLS link;

Wherein, the other AP is an AP other than the second AP in the AP MLD where the second AP is located, and the second AP is an AP connected to the first STA.
A computer-readable storage medium, characterized in that a computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the BSS color conflict as claimed in any one of claims 1 to 6 Solution.
A chip, characterized in that the chip includes programmable logic circuits and/or program instructions, and when the chip is run, it is used to implement the BSS color conflict resolution method according to any one of claims 1 to 6.
A computer program product, characterized in that the computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a processor reads and executes the computer instructions from the computer-readable storage medium , to implement the BSS color conflict resolution method as described in any one of claims 1 to 6.