Information indication method and device, communication node and storage medium

Abstract

The invention provides an information indication method and device, a communication node and a storage medium. The method comprises the following steps: generating a first management frame; wherein the first management frame comprises ultrahigh reliability capability set information supported by the access point; and sending the first management frame through a first link. According to the method, ultrahigh reliability capability set information supported by an access point is carried in a first management frame, so that a non-access point multi-link device can know whether the first management frame is from an ultrahigh reliability multi-link device or a traditional multi-link device by analyzing a specific field in the first management frame; and the same ultrahigh reliability technology is adopted to perform information interaction with the access point multi-link equipment at the opposite end, so that the throughput of data transmission of the multi-link communication system is improved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to an information indication method, device, communication node and storage medium. Background Art

[0002] For a multi-link device (MLD), if the attached stations are all access points (AP), it is an access point multi-link device (AP MLD), and if the attached stations are all non-AP stations (STA), it is a non-AP MLD. A non-AP multi-link device can communicate with an access point multi-link device through different links.

[0003] With the development of Ultra High Reliability (UHR) technology, UHR AP MLD is similar to the ultra-high throughput multi-link device defined by Wi-Fi 7, and also sends corresponding management frames on its working channel. However, for UHR non-AP MLD, it is impossible to determine whether the received management frame comes from an ultra-high reliability multi-link device or an ultra-high throughput multi-link device, and which ultra-high reliability capabilities the ultra-high reliability multi-link device specifically supports. Therefore, how to indicate information related to the ultra-high reliability capability set is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] Embodiments of the present application provide an information indication method, device, communication node, and storage medium.

[0005] In a first aspect, an embodiment of the present application provides an information indication method, which is applied to an access point multi-link device, and the method includes:

[0006] Generate a first management frame; wherein the first management frame includes ultra-high reliability capability set information supported by the access point;

[0007] The first management frame is sent via a first link.

[0008] In one of the embodiments, the first management frame further includes indication information, where the indication information is used to indicate whether the surrounding access points of the access point support the UHR function.

[0009] In one embodiment, it also includes:

[0010] Receiving a second management frame through the first link or the second link; wherein the second management frame includes a UHR identifier of a target access point with an ultra-high reliability function among the surrounding access points, and is used to obtain ultra-high reliability capability set information supported by the target access point;

[0011] A third management frame is sent through the first link or the second link; wherein the third management frame includes information about a very high reliability capability set supported by the target access point.

[0012] In one of the embodiments, the indication information is carried in at least one of the following fields:

[0013] NR field, RNR field, multilink element field, reconfiguration multilink element field and MBSSID field.

[0014] In one of the embodiments, the indication information is represented by a specific identifier or a combination of identifiers in the field.

[0015] In one of the embodiments, the ultra-high reliability capability set information is carried in at least one of the following fields:

[0016] The capability set field of the current link, the multilink element field, the reconfiguration multilink element field, and the MBSSID field.

[0017] In one of the embodiments, the ultra-high reliability capability set information includes at least one of the following:

[0018] Orthogonal frequency division multiple access collaboration, spatial multiplexing collaboration, beamforming collaboration, non-main channel intervention, time division multiple access collaboration, target wake-up time collaboration, channel resource preemption technology, relay technology and joint transmission technology.

[0019] In one embodiment, the first management frame and the third management frame include at least one of the following:

[0020] Beacon frame, probe response frame, multilink probe response frame, ANQP response frame, association response frame, reassociation response frame, BTM request frame, link reconfiguration notification frame, link reconfiguration response frame, and multilink operation update response frame.

[0021] In a second aspect, an embodiment of the present application provides an information indication method, which is applied to a non-access point multi-link device, and the method includes:

[0022] Receiving a first management frame through a first link; wherein the first management frame includes ultra-high reliability capability set information supported by the access point;

[0023] Information is exchanged with the local access point according to the ultra-high reliability capability set information.

[0024] In one of the embodiments, the first management frame further includes indication information, where the indication information is used to indicate whether the surrounding access points of the access point support the ultra-high reliability function.

[0025] In one of the embodiments, when the first management frame is a BTM request frame, the first management frame further includes ultra-high reliability capability set information supported by the access point recommended by the access point multi-link device.

[0026] In one embodiment, it also includes:

[0027] Sending a second management frame through the first link or the second link; wherein the second management frame includes a UHR identifier of a target access point with an ultra-high reliability function among the surrounding access points, and is used to obtain ultra-high reliability capability set information supported by the target access point;

[0028] A third management frame is received through the first link or the second link; wherein the third management frame includes information about a very high reliability capability set supported by the target access point.

[0029] In one of the embodiments, the second management frame further includes ultra-high reliability capability set information supported by the current station in the non-access point multi-link device.

[0030] In one of the embodiments, the second management frame further includes ultra-high reliability capability set information supported by other stations in the non-access point multi-link device except the current station.

[0031] In one of the embodiments, the second management frame includes at least one of the following:

[0032] Probe request frame, multilink probe request frame, ANQP request frame, association request frame, reassociation request frame, link reconfiguration request frame, and multilink operation update request frame.

[0033] In one embodiment, it also includes:

[0034] A BTM response frame is sent through the first link; wherein the BTM response frame includes ultra-high reliability capability set information supported by the target access point to be switched, and / or ultra-high reliability capability set information supported by other access points in the same access point multi-link device as the target access point.

[0035] In one of the embodiments, the indication information is carried in at least one of the following fields:

[0036] NR field, RNR field, multilink element field, reconfiguration multilink element field and MBSSID field.

[0037] In one of the embodiments, the ultra-high reliability capability set information includes at least one of the following:

[0038] Orthogonal frequency division multiple access collaboration, spatial multiplexing collaboration, beamforming collaboration, non-main channel intervention, time division multiple access collaboration, target wake-up time collaboration, channel resource preemption technology, relay technology and joint transmission technology.

[0039] In one of the embodiments, the ultra-high reliability capability set information is carried in at least one of the following fields:

[0040] The capability set field of the current link, the multilink element field, the reconfiguration multilink element field, and the MBSSID field.

[0041] In one embodiment, the exchanging information with the access point according to the ultra-high reliability capability set information includes:

[0042] According to the ultra-high reliability capability set information, information interaction is performed using a UHR technology that is commonly supported by the access point.

[0043] In a third aspect, an embodiment of the present application provides an information indication device, which is integrated in an access point multi-link device, and the device includes:

[0044] A processing module, configured to generate a first management frame; wherein the first management frame includes information on an ultra-high reliability capability set supported by the access point;

[0045] A sending module is used to send the first management frame through a first link.

[0046] In a fourth aspect, an embodiment of the present application provides an information indication device, which is integrated in a non-access point multi-link device, and the device includes:

[0047] A receiving module, configured to receive a first management frame through a first link; wherein the first management frame includes information about an ultra-high reliability capability set supported by the access point;

[0048] A processing module is used to perform information exchange with the access point according to the ultra-high reliability capability set information.

[0049] In a fifth aspect, an embodiment of the present application provides a communication node, comprising: a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the information indication method provided in the first and second aspects of the embodiments of the present application when executing the computer program.

[0050] In a sixth aspect, an embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the information indication method provided in the first aspect and the second aspect of the embodiment of the present application are implemented.

[0051] The technical solution provided by the embodiment of the present application generates a first management frame, sends the first management frame through the first link, and carries the ultra-high reliability information capability set information supported by the access point in the sent first management frame, so that the non-access point multi-link device can understand whether the above-mentioned first management frame comes from the ultra-high reliability multi-link device or the extremely high throughput multi-link device by parsing a specific field in the first management frame, and then adopts the same ultra-high reliability technology to exchange information with the access point multi-link device at the opposite end, thereby improving the data transmission throughput of the multi-link communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of a flow chart of an information indication method provided in an embodiment of the present application;

[0053] Figure 2 A schematic diagram of a structure of ultra-high reliability capability set information provided in an embodiment of the present application;

[0054] Figure 3 A schematic diagram of the structure of the extended RNR field provided in an embodiment of the present application;

[0055] Figure 4 A schematic diagram of the structure of the extended NR field provided in an embodiment of the present application;

[0056] Figure 5 Another schematic diagram of a flow chart of an information indication method provided in an embodiment of the present application;

[0057] Figure 6 A schematic diagram of the structure of an information indication device provided in an embodiment of the present application;

[0058] Figure 7 Another structural schematic diagram of the information indication device provided in the embodiment of the present application;

[0059] Figure 8 A schematic diagram of the structure of a communication node provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0061] In order to facilitate understanding by those skilled in the art, some concepts are first introduced below:

[0062] Neighbor report (NR) field: The NR field contains information about other surrounding APs (or AP MLD, hereinafter referred to as AP). It is generally used for STA (or non-AP MLD, hereinafter referred to as STA) to send a query frame to the target AP to query the information of other surrounding APs. The target AP sends a response frame to the STA to feedback the information of other surrounding APs queried by the STA. For example, the STA sends an Access Network Query Protocol (ANQP) query frame to the AP, and the AP feeds back an ANQP response frame to the STA. Alternatively, in a roaming or multi-AP load balancing scenario, the AP actively recommends information about other surrounding APs to the STA, and the STA confirms the information and then sends a (re)association request to a recommended AP. For example, the AP sends a BSS transition management (BTM) request frame to the STA and carries the information of the recommended AP in the NR field. The STA sends a BTM response frame, the NR field of which carries the information of the AP to which it is expected to connect, and then sends an authentication frame and a (re)association frame to establish a connection with the target AP. The meaning of each field in the NR field is shown in Table 1 below:

[0063] Table 1

[0064]

[0065]

[0066] Reduced neighbor report (RNR) field: The RNR field contains information about other surrounding APs. In order to reduce the channel resource overhead caused by the field length, the RNR field is cropped and modified accordingly based on the NR field, and only includes key information about surrounding APs, such as working channels, service set identifiers (SSID), BSSID information, etc. When a STA receives a management frame such as a beacon frame or a probe response frame carrying the RNR field sent by an AP, the STA can quickly discover other surrounding APs, and then further detect on the channel where the target AP is located, thereby obtaining complete information about the AP, thereby reducing the time overhead of the STA blindly scanning the channel and detecting surrounding APs. The meaning of each field in the RNR field is shown in Table 2 below:

[0067] Table 2

[0068]

[0069]

[0070] Multilink element field: This field is widely used in the discovery and connection phases, such as being carried in the Beacon, (ML)probe request / response frame in the discovery phase, or carried in the (Re)associationrequest / response frame in the connection phase. It may include a Muti-linkControl field used to indicate whether other related information fields are carried, a multilink common information field (Common Info), and each link information field (Link Info).

[0071] Multiple Basic Service Set Identifier (MBSSID) field: Multiple APs can be created on a Wi-Fi radio link, and each AP corresponds to a different BSSID. In order to reduce the channel resource overhead of each AP sending beacon frames and probe response frames, the 802.11 protocol introduces MBSSID technology, that is, beacon frames and probe response frames sent by multiple APs on the same radio are merged into one AP's beacon frame and probe response frame for transmission, that is, one AP's beacon frame and probe response frame carry information about other APs on the same radio, and this information is placed in the multiple BSSID element field. The MBSSID field can include an element identifier (element ID), element length (length), maximum BSSID number indicator (MaxBSSID Indicator), and optional subelements (Optional Subelements), where detailed information about other APs is stored in the Optional Subelements.

[0072] Figure 1 A flow chart of the information indication method provided in the embodiment of the present application. The method is applied to any access point in an access point multi-link device (i.e., AP MLD). The following embodiment is first introduced by taking the execution subject as an access point multi-link device as an example. Figure 1 As shown, the method may include:

[0073] S101. Generate a first management frame; wherein the first management frame includes information about a very high reliability capability set supported by the access point.

[0074] S102: Send a first management frame through a first link.

[0075] The access point may carry the ultra-high reliability capability set information it supports in the capability set field of the current link, and send it to the station (STA) in the opposite non-access point multi-link device through the current link (ie, the first link, identified by AP1).

[0076] Optionally, the first management frame may include at least one of the following: a beacon frame, a probe response frame, a multi-link probe response frame, an ANQP response frame, an association response frame, a reassociation response frame, and a basic service set transfer management BTM request frame, a link reconfiguration notify frame, a link reconfiguration response frame, and a multi-link operation update response frame.

[0077] The ultra high reliability (UHR) capability set information specifically indicates the UHR technologies supported by this access point, such as Figure 2 As shown, it may include at least one of the following: co-ordination orthogonal frequency division multiple access (C-OFDMA), co-ordination spatial reuse (C-SR), co-ordination Beamforming (C-BF), non-primary channel access, co-ordination Time division multiple access (C-TDMA), co-ordination target wakeup time (C-TWT), channel resource preemption technology (Preemption), relay technology (Relay) and joint transmission technology (joint transmission, JT).

[0078] The technical solution provided by the embodiment of the present application generates a first management frame, sends the first management frame through the first link, and carries the ultra-high reliability capability set information supported by the access point in the sent first management frame, so that the non-access point multi-link device can understand whether the above-mentioned first management frame comes from the ultra-high reliability multi-link device or the extremely high throughput multi-link device by parsing a specific field in the first management frame, and then adopts the same ultra-high reliability technology to exchange information with the access point multi-link device at the opposite end, thereby improving the data transmission throughput of the multi-link communication system.

[0079] In one embodiment, optionally, the first management frame further includes indication information, where the indication information is used to indicate whether surrounding access points of the access point support an ultra high reliability (UHR) function.

[0080] The surrounding access points may include other access points in the same access point multi-link device as the access point, or may include access points in other access point multi-link devices around the access point. Optionally, the indication information may be carried in at least one of the following fields: an NR field, an RNR field, a multi-link element field, a reconfiguration multi-link element field, and an MBSSID field.

[0081] Optionally, the indication information may be represented by a specific identifier or a combination of identifiers in the above fields. For example, the indication information may be represented by a reserved field in the above NR field, RNR field, multilink element field, reconfiguration multilink element field, or MBSSID field, or the indication information may be jointly represented by redefining an existing field in the above NR field, RNR field, multilink element field, reconfiguration multilink element field, or MBSSID field. For example, Figure 3-4 As shown, by extending the reserved field of the RNR field or the NR field, such as adding UHR Capability as indication information in the reserved field of the original RNR field, or adding Ultra high reliability as indication information in the reserved field of the original NR field, it is used to indicate whether the reported access point / link supports the UHR capability set.

[0082] Further, after the access point multi-link device sends the first management frame through the first link, the non-access point multi-link device can discover the surrounding access point multi-link devices or the access points of other links in the access point multi-link device through the NR field, the RNR field, the multi-link element field, the reconfiguration multi-link element field or the MBSSID field, and further distinguish these access points as traditional access points or access points supporting the UHR capability set according to the specific identifier (or identifier combination) of each access point. For the access point supporting the UHR capability set (identified by AP2), the non-access point multi-link device can send a second management frame through the first link or through the second link where AP2 is located, to obtain the ultra-high reliability capability set information supported by AP2, that is, to obtain which ultra-high reliability technologies AP2 specifically supports.

[0083] In one embodiment, optionally, the access point multi-link device receives a second management frame sent by the non-access point multi-link device through the first link or through the second link where the target access point (such as AP2) is located; wherein the second management frame includes a UHR identifier of the target access point with ultra-high reliability function among the surrounding access points, and the second management frame is used to obtain ultra-high reliability capability set information supported by the target access point. Optionally, the second management frame may include at least one of the following: a probe request frame, a multi-link probe request frame, an ANQP request frame, an association request frame, a reassociation request frame, a link reconfiguration request frame, and a multi-link operation update request frame.

[0084] Further, the access point multi-link device sends a third management frame through the first link or the second link; wherein the third management frame includes the ultra-high reliability capability set information supported by the target access point. The third management frame can be understood as a response frame for the second management frame, which is used to feedback the ultra-high reliability capability set information supported by the requested target AP to the STA. For example, the third management frame can be a detection response frame, a multi-link detection response frame, an ANQP response frame, an association response frame, a re-association response frame, a link reconfiguration response frame, or a multi-link operation update response frame. Optionally, the above-mentioned ultra-high reliability capability set information may be included in the multi-link element field, the reconfiguration multi-link element field, or the MBSSID field. For example, the above-mentioned ultra-high reliability capability set information is carried in the Link Info field in the multi-link element, or the above-mentioned ultra-high reliability capability set information is carried in the optional sub-element (Optional Subelements) field in the MBSSID field.

[0085] It should be noted that when each link in the same access point multi-link device supports the UHR function, the ultra-high reliability capability set supported by each link may be the same or different. For example, the ultra-high reliability capability set supported by link 1 in the access point multi-link device may include UHR technology 1, UHR technology 2 and UHR technology 3, and the ultra-high reliability capability set supported by link 2 may include UHR technology 3, UHR technology 4 and UHR technology 5. There may be differences in the specific one or more UHR technologies supported by the two.

[0086] In this way, in the scenario where UHR AP MLD and traditional access points (such as enhanced high throughput access points) are mixedly deployed, by carrying indication information for indicating whether the surrounding access points of the access point support the UHR function in the first management frame, the non-access multi-link device can know whether the surrounding access points are traditional access points or UHR AP MLDs through the indication information in the first management frame after receiving the first management frame. In addition, by carrying the ultra-high reliability capability set information supported by the target access point requested by the non-access point multi-link device in the third management frame, the non-access point multi-link device can use the same UHR technology as the target access point to exchange information, thereby improving the throughput of data transmission.

[0087] Figure 5 Another flow chart of the information indication method provided in the embodiment of the present application. The method is applied to a non-access point multi-link device, that is, the following embodiment is introduced by taking a non-access point multi-link device as an example, such as Figure 5 As shown, the method may include:

[0088] S501. Receive a first management frame through a first link; wherein the first management frame includes information about a very high reliability capability set supported by the access point.

[0089] S502: Information interaction is performed with the access point according to the ultra-high reliability capability set information.

[0090] Among them, the access point multi-link device can carry the ultra-high reliability capability set information supported by the access point in the capability set field of the current link, and send it to the corresponding station (STA) in the non-access point multi-link device through the current link (i.e., the first link, identified by AP1). After receiving the first management frame, the non-access point multi-link device parses the specific field in the first management frame to learn that the access point that sends the first management frame is an access point that supports the UHR function and which UHR capabilities the access point specifically supports. Furthermore, the non-access point multi-link device can use the UHR technology supported by the opposite access point multi-link device to exchange information based on the ultra-high reliability capability set information supported by the opposite access point.

[0091] Optionally, the first management frame may include at least one of: a beacon frame, a probe response frame, a multi-link probe response frame, an ANQP response frame, an association response frame, a reassociation response frame, a BTM request frame, a link reconfiguration notification frame, a link reconfiguration response frame, and a multi-link operation update response frame.

[0092] The ultra-high reliability capability set information specifically indicates the UHR technology supported by the access point multi-link device, which may include at least one of the following: C-OFDMA, C-SR, C-BF, non-primary channel access, C-TDMA, C-TWT, Preemption, Relay and JT.

[0093] The technical solution provided by the embodiment of the present application receives a first management frame through a first link, and the first management frame carries the ultra-high reliability capability set information supported by the access point multi-link device. In this way, the non-access point multi-link device can learn whether the above-mentioned first management frame comes from the ultra-high reliability multi-link device or the extremely high throughput multi-link device by parsing a specific field in the first management frame, and then use the same ultra-high reliability technology to exchange information with the access point multi-link device at the opposite end, thereby improving the data transmission throughput of the multi-link communication system.

[0094] In one embodiment, optionally, the first management frame further includes indication information, where the indication information is used to indicate whether surrounding access points of the access point support an ultra-high reliability function.

[0095] The surrounding access points may include other access points in the same access point multi-link device as the access point, or may include access points in other access point multi-link devices around the access point. Optionally, the indication information may be carried in at least one of the following fields: an NR field, an RNR field, a multi-link element field, a reconfiguration multi-link element field, and an MBSSID field.

[0096] Optionally, the indication information may be represented by a specific identifier or a combination of identifiers in the above fields. For example, the indication information may be represented by a reserved field in the above NR field, RNR field, multilink element field, reconfiguration multilink element field, or MBSSID field, or the indication information may be jointly represented by redefining an existing field in the above NR field, RNR field, multilink element field, reconfiguration multilink element field, or MBSSID field.

[0097] Further, after the access point multi-link device sends the first management frame through the first link, the non-access point multi-link device can discover the surrounding access point multi-link devices or the access points of other links in the access point multi-link device through the NR field, the RNR field, the multi-link element field or the MBSSID field, and further distinguish these access points as traditional access points or access points supporting the UHR capability set according to the specific identifier (or identifier combination) of each access point. For the access point supporting the UHR capability set (identified by AP2), the non-access point multi-link device can send a second management frame through the first link or through the second link where the target access point (such as AP2) is located, wherein the second management frame includes the UHR identifier of the target access point with ultra-high reliability function among the surrounding access points, which is used to obtain the ultra-high reliability capability set information supported by the target access point. Optionally, the second management frame may include at least one of the following: a probe request frame, a multi-link probe request frame, an ANQP request frame, an association request frame, a reassociation request frame, a link reconfiguration request frame, and a multi-link operation update request frame.

[0098] Further, the non-access point multi-link device receives a third management frame through the first link or through the second link where the target access point (such as AP2) is located; wherein the third management frame includes the ultra-high reliability capability set information supported by the target access point. The third management frame can be understood as a response frame to the second management frame, which is used to feedback to the STA the ultra-high reliability capability set information supported by the requested target AP. For example, the third management frame can be a detection response frame, a multi-link detection response frame, an ANQP response frame, an association response frame, a re-association response frame, a link reconfiguration response frame, or a multi-link operation update response frame. Optionally, the ultra-high reliability capability set information supported by the above-mentioned surrounding access points may be included in the multi-link element field, the reconfiguration multi-link element field, or the MBSSID field.

[0099] In this way, in the scenario where UHR AP MLD and traditional access points (such as enhanced high throughput access points) are mixedly deployed, by carrying indication information for indicating whether the surrounding access points of the access point have UHR functions in the first management frame, the non-access multi-link device can know whether the surrounding access points are traditional access points or UHR AP MLDs through the indication information in the first management frame after receiving the first management frame. In addition, a second management frame is sent to the access point multi-link device to request the ultra-high reliability capability set information supported by the target access point, and a third management frame sent by the access point multi-link device in response to the second management frame is received. By parsing the third management frame, the ultra-high reliability capability set information specifically supported by the requested target access point is obtained, so that the same UHR technology as the target access point can be used for information exchange, thereby improving the throughput of data transmission.

[0100] In one embodiment, optionally, the first management frame may also be a BTM request frame. When the first management frame is a BTM request frame, the first management frame also includes the ultra-high reliability capability set information supported by the access point recommended by the access point multi-link device. That is, during the fast BSS switching process, the access point multi-link device may send a BTM request frame to the non-access point multi-link device connected thereto, and the NR field in the BTM request frame carries the information of other recommended surrounding access points, which may include the ultra-high reliability capability set information supported by each access point. In this way, the non-access point multi-link device may determine whether it needs to switch to the target access point based on the ultra-high reliability capability set information supported by each access point. Optionally, after receiving the BTM request frame, the non-access point multi-link device may also send a BTM response frame through the first link, and the NR field in the BTM response frame may include the ultra-high reliability capability set information supported by the target access point to be switched and / or the ultra-high reliability capability set information supported by other access points in the same access point multi-link device as the target access point.

[0101] In one embodiment, optionally, the second management frame sent by the non-access point multi-link device may also include ultra-high reliability capability set information supported by the current site (or current link) in the non-access point multi-link device. For example, in the process of establishing a single link connection, the non-access point multi-link device may send a (re)association request frame through the first link, and the (re)association request frame carries the ultra-high reliability capability set information of the current site (or current link) to request to establish a connection with the access point multi-link device.

[0102] Optionally, the second management frame sent by the non-access point multi-link device may include not only the ultra-high reliability capability set information supported by the current site in the non-access point multi-link device, but also the ultra-high reliability capability set information supported by other sites in the non-access point multi-link device except the current site. For example, during the multi-link connection establishment process, the non-access point multi-link device sends a (re)association request frame through the first link, and the (re)association request frame carries the ultra-high reliability capability set information of the current site (or current link) and the ultra-high reliability capability set information of other sites (or other links) in the non-access point multi-link device.

[0103] In this way, by carrying the ultra-high reliability capability set information supported by the current site in the non-access point multi-link device and the ultra-high reliability capability set information supported by other sites except the current site in the second management frame, the access point multi-link device can obtain the ultra-high reliability capability set information supported by the opposite non-access point multi-link device after receiving the second management frame, and then use the commonly supported UHR technology to perform information exchange with the non-access point multi-link device on one or more links, thereby improving the data transmission throughput of the multi-link communication system.

[0104] It should be noted that when each link in the same non-access point multi-link device supports the UHR function, the ultra-high reliability capability set supported by each link may be the same or different. For example, the ultra-high reliability capability set supported by link 1 in the non-access point multi-link device may include UHR technology 1, UHR technology 2 and UHR technology 3, and the ultra-high reliability capability set supported by link 2 may include UHR technology 3, UHR technology 4 and UHR technology 5. There may be differences in the specific one or more UHR technologies supported by the two.

[0105] Next, we will take the discovery process, connection process, and fast roaming process of a multi-link device as an example to introduce:

[0106] 1. Discovery Process

[0107] The access point multi-link device sends a first management frame through the first link, and the non-access point multi-link device receives the first management frame. After receiving the first management frame, the non-access point multi-link device may perform the following actions:

[0108] (1) The non-access point multi-link device learns the UHR technology specifically supported by the peer access point multi-link device through the ultra-high reliability capability set information supported by the access point in the access point multi-link device included in the first management frame, and then uses the same UHR technology to exchange information with the peer.

[0109] (2) The non-access point multi-link device discovers the surrounding access points of the access point through the other access point information field included in the first management frame, and further distinguishes whether these access points are traditional access points or access points supporting ultra-high reliability capability set information according to the indication information of each surrounding access point (identified by AP2).

[0110] (3) For a target access point that supports ultra-high reliability capability set information among the surrounding access points, the non-access point multi-link device may also send a second management frame to the access point multi-link device through the first link or the second link where the target access point is located, wherein the second management frame includes the UHR identifier of the target access point with ultra-high reliability function among the surrounding access points, and is used to obtain the ultra-high reliability capability set information supported by the target access point. The non-access point multi-link device receives a third management frame through the first link or the second link where the target access point is located, parses the third management frame to obtain the ultra-high reliability capability set information supported by the target access point, and then learns one or more UHR technologies specifically supported by the target access point.

[0111] Optionally, during the discovery process, the first management frame sent by the access point multilink device may be a beacon frame, a multilink probe response frame or an ANQP response frame. The second management frame sent by the non-access point multilink device may be a (multilink) probe request frame or an ANQP request frame, etc.

[0112] Optionally, the above-mentioned ultra-high reliability capability set information may be carried in a capability set field, a multi-link element field, a reconfiguration multi-link element field or an MBSSID field of the current link.

[0113] Optionally, the above indication information may be carried in at least one of the following fields: an NR field, an RNR field, a multi-link element field, a reconfiguration multi-link element field, and an MBSSID field.

[0114] Optionally, the above indication information is represented by a reserved field in the above fields, or a combination of existing fields in the above fields may be used to define the above indication information.

[0115] 2. Connection Process

[0116] When a non-AP Multilink device discovers an AP Multilink device during the discovery process, it can perform the following actions:

[0117] (1) Single-link connection request: A (re)association request frame is sent through the first link and carries the ultra-high reliability capability set information supported by the current station (or current link) in the non-access point multi-link device.

[0118] (2) Multi-link connection request: A (re)association request frame is sent through the first link, and carries the ultra-high reliability capability set information supported by the current site (or current link) in the non-access point multi-link device and the ultra-high reliability capability set information supported by other sites (or other links) in the non-access point multi-link device except the current site.

[0119] After receiving the above (re)association request frame, the access point multi-link device sends a (re)association response frame through the first link, and carries the ultra-high reliability capability set information supported by the access point and the ultra-high reliability capability set information supported by the requested other access points.

[0120] After the connection is successfully established, the non-access point multi-link device and the access point multi-link device exchange information on one or more links using a commonly supported UHR technology.

[0121] 3. Fast roaming process

[0122] After the non-access point multi-link device establishes a connection with the access point multi-link device, under certain conditions, the access point multi-link device sends a BTM request frame to the non-access point multi-link device, wherein the BTM request frame includes ultra-high reliability capability set information specifically supported by the access points supporting the UHR function and indicating whether the surrounding access points of the access point support the UHR function.

[0123] After receiving the BTM request frame, the non-access point multi-link device sends a BTM response frame to the access point multi-link device. The BTM response frame includes information about the ultra-high reliability capability set supported by the target access point.

[0124] The non-access point multi-link device sends a single-link or multi-link connection request to the target access point to complete the roaming handover process.

[0125] Figure 6 A schematic diagram of a structure of an information indication device provided in an embodiment of the present application. The device is integrated into an access point multi-link device, such as Figure 6 As shown, the device may include: a processing module 601 and a sending module 602.

[0126] Specifically, the processing module 601 is used to generate a first management frame; wherein the first management frame includes ultra-high reliability capability set information supported by the access point;

[0127] The sending module 602 is configured to send the first management frame through a first link.

[0128] Based on the above embodiment, optionally, the first management frame further includes indication information, where the indication information is used to indicate whether surrounding access points of the current access point support the UHR function.

[0129] On the basis of the above embodiment, optionally, it further includes: a receiving module.

[0130] Specifically, the receiving module is used to receive a second management frame through the first link or the second link; wherein the second management frame includes a UHR identifier of a target access point with an ultra-high reliability function among the surrounding access points, and is used to obtain ultra-high reliability capability set information supported by the target access point;

[0131] The sending module 602 is further configured to send a third management frame through the first link or the second link; wherein the third management frame includes information about a very high reliability capability set supported by the target access point.

[0132] Based on the above embodiment, optionally, the indication information is carried in at least one of the following fields:

[0133] NR field, RNR field, multilink element field, reconfiguration multilink element field and MBSSID field.

[0134] Based on the above embodiment, optionally, the indication information is represented by a specific identifier or a combination of identifiers in the field.

[0135] Based on the above embodiment, optionally, the ultra-high reliability capability set information is carried in at least one of the following fields:

[0136] The capability set field of the current link, the multilink element field, the reconfiguration multilink element field, and the MBSSID field.

[0137] Based on the above embodiment, optionally, the ultra-high reliability capability set information includes at least one of the following:

[0138] Orthogonal frequency division multiple access collaboration, spatial multiplexing collaboration, beamforming collaboration, non-main channel intervention, time division multiple access collaboration, target wake-up time collaboration, channel resource preemption technology, relay technology and joint transmission technology.

[0139] Based on the above embodiment, optionally, the first management frame and the third management frame include at least one of the following:

[0140] Beacon frame, probe response frame, multilink probe response frame, ANQP response frame, association response frame, reassociation response frame, BTM request frame, link reconfiguration notification frame, link reconfiguration response frame, and multilink operation update response frame.

[0141] Figure 7 Another structural diagram of the information indication device provided in the embodiment of the present application. The device is integrated in a non-access point multi-link device, such as Figure 7 As shown, the device may include: a receiving module 701 and a processing module 702.

[0142] Specifically, the receiving module 701 is used to receive a first management frame through a first link; wherein the first management frame includes ultra-high reliability capability set information supported by the access point;

[0143] The processing module 702 is configured to perform information exchange with the local access point according to the ultra-high reliability capability set information.

[0144] Based on the above embodiment, optionally, the first management frame further includes indication information, where the indication information is used to indicate whether surrounding access points of the access point support an ultra-high reliability function.

[0145] Based on the above embodiment, optionally, when the first management frame is a BTM request frame, the first management frame further includes ultra-high reliability capability set information supported by the access point recommended by the access point multi-link device.

[0146] On the basis of the above embodiment, optionally, it further includes: a sending module.

[0147] Specifically, the sending module is used to send a second management frame through the first link or the second link; wherein the second management frame includes a UHR identifier of a target access point with an ultra-high reliability function among the surrounding access points, and is used to obtain ultra-high reliability capability set information supported by the target access point;

[0148] The receiving module 701 is further configured to receive a third management frame through the first link or the second link; wherein the third management frame includes information about a very high reliability capability set supported by the target access point.

[0149] Based on the above embodiment, optionally, the second management frame further includes ultra-high reliability capability set information supported by the current station in the non-access point multi-link device.

[0150] Based on the above embodiment, optionally, the second management frame further includes ultra-high reliability capability set information supported by other stations in the non-access point multi-link device except the current station.

[0151] Based on the above embodiment, optionally, the second management frame includes at least one of the following:

[0152] Probe request frame, multilink probe request frame, ANQP request frame, association request frame, reassociation request frame, link reconfiguration request frame, and multilink operation update request frame.

[0153] Based on the above embodiment, optionally, the sending module is also used to send a BTM response frame through the first link; wherein the BTM response frame includes ultra-high reliability capability set information supported by the target access point to be switched and / or ultra-high reliability capability set information supported by other access points in the same access point multi-link device as the target access point.

[0154] Based on the above embodiment, optionally, the indication information is carried in at least one of the following fields:

[0155] NR field, RNR field, multilink element field, reconfiguration multilink element field and MBSSID field.

[0156] Based on the above embodiment, optionally, the ultra-high reliability capability set information includes at least one of the following:

[0157] Orthogonal frequency division multiple access collaboration, spatial multiplexing collaboration, beamforming collaboration, non-main channel intervention, time division multiple access collaboration, target wake-up time collaboration, channel resource preemption technology, relay technology and joint transmission technology.

[0158] Based on the above embodiment, optionally, the ultra-high reliability capability set information is carried in at least one of the following fields:

[0159] The capability set field of the current link, the multilink element field, the reconfiguration multilink element field, and the MBSSID field.

[0160] On the basis of the above embodiment, optionally, the processing module 702 is specifically configured to perform information interaction according to the ultra-high reliability capability set information by using a UHR technology that is commonly supported by the access point.

[0161] In one embodiment, a communication node is further provided, the communication node comprising a non-access point multi-link device or an access point multi-link device. The internal structure diagram of the above communication node can be as follows: Figure 8 As shown. The communication node includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the communication node is used to provide computing and control capabilities. The memory of the communication node includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the communication node is used to store data generated during the information indication process. The network interface of the communication node is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, an information indication method is implemented.

[0162] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the communication node to which the scheme of the present application is applied. The specific communication node may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0163] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0164] Generate a first management frame; wherein the first management frame includes ultra-high reliability capability set information supported by the access point;

[0165] The first management frame is sent via a first link.

[0166] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0167] Receiving a first management frame through a first link; wherein the first management frame includes ultra-high reliability capability set information supported by the access point;

[0168] Information is exchanged with the local access point according to the ultra-high reliability capability set information.

[0169] The computer storage medium of the embodiment of the present application may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. The computer-readable storage medium includes (a non-exhaustive list): an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (Random Access Memory, RAM), a read-only memory (Read-Only Memory, ROM), an erasable programmable read-only memory (electrically erasable, programmable Read-Only Memory, EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by an instruction execution system, device or device or used in combination with it.

[0170] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, the data signal carrying a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0171] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

[0172] Computer program code for performing the disclosed operations may be written in one or more programming languages ​​or a combination of multiple programming languages, including object-oriented programming languages ​​(such as Java, Smalltalk, C++, Ruby, Go), and conventional procedural programming languages ​​(such as "C" language or similar programming languages). The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network (including a network (Local Area Network, LAN) or a wide area network (Wide Area Network, WAN)), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet).

[0173] It will be appreciated by those skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.

[0174] In general, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, microprocessor or other computing device, although the present application is not limited thereto.

[0175] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0176] The block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. The computer program may be stored in a memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital versatile discs DVD or CD discs), etc. Computer-readable media may include non-transient storage media. The data processor may be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (Digital Signal Processing, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a programmable logic device (Field-Programmable Gate Array, FGPA) and a processor based on a multi-core processor architecture.

Claims

1. An information indication method, characterized in that: Applied to an access point multi-link device, the method comprises: Generate a first management frame; wherein the first management frame includes ultra-high reliability capability set information supported by the access point; The first management frame is sent via a first link.

2. The method according to claim 1, characterized in that The first management frame also includes indication information, where the indication information is used to indicate whether the surrounding access points of the access point support an ultra high reliability (UHR) function.

3. The method according to claim 2, characterized in that Also includes: Receiving a second management frame through the first link or the second link; wherein the second management frame includes a UHR identifier of a target access point with an ultra-high reliability function among the surrounding access points, and is used to obtain ultra-high reliability capability set information supported by the target access point; A third management frame is sent through the first link or the second link; wherein the third management frame includes information about a very high reliability capability set supported by the target access point.

4. The method according to claim 2, characterized in that: The indication information is carried in at least one of the following fields: Neighbor Report NR field, Reduced Neighbor Report RNR field, Multilink Element field, Reconfiguration Multilink Element field and Multiple Basic Service Set Identifier MBSSID field.

5. The method according to claim 4, characterized in that The indication information is represented by a specific identifier or a combination of identifiers in the field.

6. The method according to claim 3, characterized in that: The ultra-high reliability capability set information is carried in at least one of the following fields: The capability set field of the current link, the multilink element field, the reconfiguration multilink element field, and the MBSSID field.

7. The method according to claim 1, characterized in that The ultra-high reliability capability set information includes at least one of the following: Orthogonal frequency division multiple access collaboration, spatial multiplexing collaboration, beamforming collaboration, non-main channel intervention, time division multiple access collaboration, target wake-up time collaboration, channel resource preemption technology, relay technology and joint transmission technology.

8. The method according to any one of claims 1 to 7, characterized in that The first management frame and the third management frame include at least one of the following: Beacon frame, probe response frame, multilink probe response frame, network query protocol ANQP response frame, association response frame, reassociation response frame, basic service set transfer management BTM request frame, link reconfiguration notification frame, link reconfiguration response frame and multilink operation update response frame.

9. An information indication method, characterized in that: Applied to a non-access point multi-link device, the method comprises: Receiving a first management frame through a first link; wherein the first management frame includes ultra-high reliability capability set information supported by the access point; Information is exchanged with the local access point according to the ultra-high reliability capability set information.

10. The method according to claim 9, characterized in that The first management frame also includes indication information, where the indication information is used to indicate whether the surrounding access points of the current access point support the ultra-high reliability function.

11. The method according to claim 9, characterized in that When the first management frame is a BTM request frame, the first management frame further includes ultra-high reliability capability set information supported by the access point recommended by the access point multi-link device.

12. The method according to claim 10, characterized in that Also includes: Sending a second management frame through the first link or the second link; wherein the second management frame includes a UHR identifier of a target access point with an ultra-high reliability function among the surrounding access points, and is used to obtain ultra-high reliability capability set information supported by the target access point; A third management frame is received through the first link or the second link; wherein the third management frame includes information about a very high reliability capability set supported by the target access point.

13. The method according to claim 12, characterized in that The second management frame also includes ultra-high reliability capability set information supported by the current station in the non-access point multi-link device.

14. The method according to claim 12, characterized in that The second management frame also includes ultra-high reliability capability set information supported by other stations in the non-access point multi-link device except the current station.

15. The method according to claim 12, characterized in that The second management frame includes at least one of the following: Probe request frame, multilink probe request frame, ANQP request frame, association request frame, reassociation request frame, link reconfiguration request frame, and multilink operation update request frame.

16. The method according to claim 11, characterized in that Also includes: A BTM response frame is sent through the first link; wherein the BTM response frame includes ultra-high reliability capability set information supported by the target access point to be switched, and / or ultra-high reliability capability set information supported by other access points in the same access point multi-link device as the target access point.

17. The method according to claim 10, characterized in that The indication information is carried in at least one of the following fields: NR field, RNR field, multilink element field, reconfiguration multilink element field and MBSSID field.

18. The method according to claim 9, characterized in that The ultra-high reliability capability set information includes at least one of the following: Orthogonal frequency division multiple access collaboration, spatial multiplexing collaboration, beamforming collaboration, non-main channel intervention, time division multiple access collaboration, target wake-up time collaboration, channel resource preemption technology, relay technology and joint transmission technology.

19. The method according to claim 9, characterized in that The ultra-high reliability capability set information is carried in at least one of the following fields: The capability set field of the current link, the multilink element field, the reconfiguration multilink element field, and the MBSSID field.

20. The method according to claim 9, characterized in that The performing information interaction with the access point according to the ultra-high reliability capability set information includes: According to the ultra-high reliability capability set information, information interaction is performed using a UHR technology that is commonly supported by the access point.

21. An information indicating device, characterized in that: Integrated in an access point multi-link device, the device comprises: A processing module, configured to generate a first management frame; wherein the first management frame includes information on an ultra-high reliability capability set supported by the access point; A sending module is used to send the first management frame through a first link.

22. An information indicating device, characterized in that: Integrated in a non-access point multi-link device, the device comprises: A receiving module, configured to receive a first management frame through a first link; wherein the first management frame includes information about an ultra-high reliability capability set supported by the access point; A processing module is used to perform information exchange with the access point according to the ultra-high reliability capability set information.

23. A communication node, characterized in that: include: A memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method according to any one of claims 1 to 20 when executing the computer program.

24. A storage medium, characterized in that The storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 20 are implemented.

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