CN115529650A

CN115529650A - Method, apparatus, system and medium for terminal discovery and connection to access device

Info

Publication number: CN115529650A
Application number: CN202110704688.1A
Authority: CN
Inventors: 吴昊; 王鑫
Original assignee: Chengdu Jimi Technology Co Ltd
Current assignee: Chengdu Jimi Technology Co Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-12-27
Anticipated expiration: 2041-06-24
Also published as: CN115529650B

Abstract

The invention discloses a method, a device, a system and a medium for discovering and connecting a terminal to access equipment. The method comprises the following steps: a terminal sends a detection request message to access equipment, wherein the detection request message indicates a request for obtaining system information of all links; after receiving the detection request message, the access device sends a detection response message to the terminal, wherein the detection response message contains system information of all links; the terminal establishes a connection with the access device. By implementing the invention, the application scene of the multilink connection between the terminal and the access equipment is enhanced, so that the terminal can still directly acquire the multilink information of the access equipment on the premise of not acquiring the broadcast message, thereby reducing the response delay that the multilink information can be requested after the broadcast message is read, flexibly setting a plurality of links needing to be connected through one link, reducing the signaling overhead, saving the network resource, reducing the connection delay and improving the user experience.

Description

Method, apparatus, system and medium for terminal discovery and connection to access device

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a method, an apparatus, a system, and a medium for a terminal to discover and connect to an access device.

Background

802.11be networks, also known as Extreme High Throughput (EHT) networks, are enhanced by a range of system features and a variety of mechanisms to achieve very High Throughput. As the use of Wireless Local Area Networks (WLANs) continues to grow, it becomes increasingly important to provide wireless data services in many environments, such as homes, businesses, and hot spots. In particular, video traffic will continue to be the dominant type of traffic in many WLAN deployments. With the advent of 4k and 8k video (uncompressed rates of 20 Gbps), the throughput requirements for these applications are constantly evolving. New high throughput, low latency applications such as virtual reality or augmented reality, gaming, remote offices, and cloud computing will proliferate (e.g., latency for real-time gaming is less than 5 milliseconds).

In view of the high throughput and stringent real-time latency requirements of these applications, users expect higher throughput, higher reliability, less latency and jitter, and higher power efficiency when supporting their applications over a WLAN. Users desire improved integration with Time Sensitive Networks (TSNs) to support applications on heterogeneous ethernet and wireless LANs. 802.11be networks aim to ensure the competitiveness of WLANs by further increasing overall throughput and reducing latency, while ensuring backward compatibility and coexistence with legacy technology standards. 802.11 compatible devices operating in the 2.4GHz,5GHz and 6GHz bands.

Disclosure of Invention

When a terminal is connected to an access device, the terminal may request multiple pieces of Link information of the access device through a probe request message (e.g., a probe request message), and in an existing solution, the probe request message includes a Multi Link element information element including Link information to be acquired, however, when an actual network is deployed, the probe request message used by the terminal is a broadcast message (e.g., a beacon message) that is not read to the access device, a system message of the access device is acquired through the probe request message, and before receiving a probe response message (e.g., a probe response message), the terminal cannot know the system message of the access device, and naturally cannot know a system message such as a Link identifier (Link ID) configured when the access device is a Multi-Link device (i.e., a device having a capability of operating on multiple links at the same time). The existing solutions cannot be implemented in a real network. In view of this, embodiments of the present invention provide a method, an apparatus, a system, and a medium for a terminal to discover and connect to an access device, so that the terminal can obtain required link information through flexible request information setting, thereby implementing multilink connection and finally ensuring multilink data transmission.

In a first aspect, an embodiment of the present invention provides a method for a terminal to discover and connect to an access device, where the method includes:

a terminal sends a detection request message to access equipment, wherein the detection request message indicates a request for obtaining system information of all links;

a terminal receives a detection response message sent by access equipment, wherein the detection response message contains system information of all links;

the terminal establishes a connection with the access device.

In a possible implementation manner, the probe request message and/or the probe response message include a multilink information element, and the multilink information element includes multilink control parameters, multilink common information, and proprietary information of different links.

In a possible implementation manner, the multilink common information included in the multilink information element in the probe request message includes a first parameter, and the first parameter is used for indicating that system information of all links is requested to be obtained.

In a possible implementation manner, the probe request message includes the multilink information element, i.e., indicates that system information of all links is requested to be obtained.

In a possible implementation manner, the specific information of the different links included in the multilink information element in the probe request message includes a link identifier, and when the value of the link identifier is set to the first preset value, it indicates that system information of all links is requested to be obtained.

In a possible implementation manner, the first preset value is a maximum value that can be represented by the number of bits of the link identifier in the specific information of the different links included in the multilink information element in the probe request message.

In a possible implementation manner, the specific information of the different links included in the multilink information element in the probe response message includes system information of all links except the currently operating link.

In one possible implementation manner, the establishing, by the terminal, a connection with an access device includes:

a terminal sends a connection request message to an access device, wherein the connection request message comprises the multilink information element, the proprietary information of different links contained in the multilink information element in the connection request message comprises the information of a logical terminal on a link of the terminal except a current operation link, and the information of the logical terminal comprises a link identification, the capability information of the logical terminal and the requested operation information;

the terminal receives a connection response message sent by the access equipment, wherein the connection response message contains the multilink information element, the proprietary information of different links contained in the multilink information element in the connection response message contains the information of the logical access point on the link of the access equipment except the current operating link, and the information of the logical access point contains a link identification, the capability information of the logical access point and the requested operating information and indicates whether to establish connection.

In a possible implementation manner, the information of the logical terminal further indicates whether to request to establish a connection.

In a possible implementation manner, when the link identifier in the information of the logical terminal is set to the second preset value, it indicates that only the information of the logical terminal is provided, but the logical terminal does not establish a connection with the access device.

In a possible implementation manner, the second preset value is a maximum value that can be represented by a bit number of a link identifier in the information of the logical terminal.

In a possible implementation manner, the multilink control parameter includes a type of a multilink information element, and indicates whether an address of a device is included in the multilink common information, and the type of the multilink information element is selected from the following items: a basic multilink information element; a proprietary information element for probe request messages; a proprietary information element for the connection request message; a proprietary information element for the connection response message.

In a second aspect, an embodiment of the present invention provides a method for a terminal to discover and connect to an access device, including:

the access equipment receives a detection request message sent by a terminal, wherein the detection request message indicates a request for obtaining system information of all links;

the access equipment sends a detection response message to the terminal, wherein the detection response message contains system information of all links;

the access device establishes a connection with the terminal.

In a possible implementation manner, the probe request message and/or the probe response message includes a multilink information element, and the multilink information element includes multilink control parameters, multilink common information, and proprietary information of different links.

In a possible implementation manner, the specific information of different links included in the multilink information element in the probe request message includes a link identifier, and when a value of the link identifier is set to a first preset value, it indicates that system information of all links is requested to be obtained.

In a possible implementation manner, the proprietary information of different links included in the multilink information element in the probe response message includes system information of all links except for the currently operating link.

In one possible implementation manner, the establishing, by the access device, a connection with a terminal includes:

the access equipment receives a connection request message sent by a terminal, wherein the connection request message comprises the multilink information element, the proprietary information of different links contained in the multilink information element in the connection request message comprises the information of a logical terminal on a link of the terminal except a current operation link, and the information of the logical terminal comprises a link identification, the capability information of the logical terminal and the requested operation information;

the access equipment sends a connection response message to the terminal, the connection response message contains the multilink information element, the proprietary information of different links contained in the multilink information element in the connection response message contains the information of the logical access point on the link of the access equipment except the current operating link, and the information of the logical access point contains a link identification, the capability information of the logical access point and the requested operating information and indicates whether to establish connection.

In a possible implementation manner, the second preset value is a maximum value that can be represented by the bit number of the link identifier in the information of the logical terminal.

In a third aspect, an embodiment of the present invention provides an apparatus for a terminal to discover and connect to an access device, including:

a sending module, configured to send a probe request message to an access device through a terminal, where the probe request message indicates a request for obtaining system information of all links;

a receiving module, configured to receive, through a terminal, a probe response message sent by an access device, where the probe response message includes system information of all links;

and the connection module is used for establishing connection with the access equipment through the terminal.

In a fourth aspect, an embodiment of the present invention provides an apparatus for a terminal to discover and connect to an access device, including:

a receiving module, configured to receive, through an access device, a probe request message sent by a terminal, where the probe request message indicates a request to obtain system information of all links;

a sending module, configured to send a probe response message to a terminal through an access device, where the probe response message includes system information of all links;

and the connection module is used for establishing connection with the terminal through the access equipment.

In a fifth aspect, an embodiment of the present invention provides a system for a terminal to discover and connect to an access device, where the system includes the terminal and the access device, the terminal is configured to perform the method for the terminal to discover and connect to the access device in the first aspect, and the access device is configured to perform the method for the terminal to discover and connect to the access device in the second aspect.

In a sixth aspect, an embodiment of the present invention provides an apparatus for a terminal to discover and connect to an access device, where the apparatus includes a processor and a memory, where the memory stores at least one instruction, at least one piece of program code, a set of codes, or a set of instructions, and the at least one instruction, at least one piece of program code, a set of codes, or a set of instructions is loaded and executed by the processor to implement the method for a terminal to discover and connect to an access device according to the first aspect or the second aspect.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where at least one instruction, at least one piece of program code, a set of codes, or a set of instructions is stored in the storage medium, and the at least one instruction, the at least one piece of program code, the set of codes, or the set of instructions is loaded and executed by a processor to implement the method for a terminal to discover and connect to an access device according to the first aspect or the second aspect.

It should be noted that, the apparatus in the third aspect is configured to execute the method in the foregoing first aspect, the apparatus in the fourth aspect is configured to execute the method in the foregoing second aspect, and the apparatus in the sixth aspect and the storage medium in the seventh aspect are configured to execute the method in the foregoing first aspect or the second aspect, so that the same beneficial effects as those of the method in the first aspect or the second aspect may be achieved, and details of the embodiments of the present invention are not repeated.

By implementing the invention, the application scene of the multilink connection between the terminal and the access equipment is enhanced, so that the terminal can still directly acquire the multilink information of the access equipment on the premise of not acquiring the broadcast message, thereby reducing the response delay that the multilink information can be requested after the broadcast message is read, flexibly setting a plurality of links needing to be connected through one link, reducing the signaling overhead, saving the network resource, reducing the connection delay and improving the user experience.

Drawings

The present application will now be described by way of example only with reference to the accompanying drawings, in which:

fig. 1 is a flowchart of a method for a terminal to discover and connect to an access device according to an embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Moreover, while the present disclosure has been described in terms of one or more exemplary embodiments, it is to be understood that each aspect of the disclosure can be implemented as a separate entity, whether or not such embodiment is described in connection with its specific embodiments. The embodiments and features of the embodiments described below can be combined with each other without conflict.

In embodiments of the present invention, words such as "exemplary," "for example," and "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another, and may or may not be identical in meaning. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The term "and/or" is meant to encompass any and all possible combinations of one or more of the associated listed items. The character "/" generally indicates that the preceding and following associated objects are in an "or" relationship.

It should be noted that the apparatus capable of operating on two or more uplink simultaneously includes more than two logical entities, each logical entity performs data transmission through one link, and each logical entity includes an independent data transceiver module. In the embodiment of the invention, the terminal and the access equipment both have the capability of operating on more than two uplink simultaneously, wherein the logical terminal is a logical entity in the terminal, and the logical access point is a logical entity in the access equipment. The access device may be a router, an access point, etc.

Fig. 1 is a flowchart of a method for a terminal to discover and connect to an access device according to an embodiment of the present invention. As shown in fig. 1, the method for a terminal to discover and connect to an access device includes the following steps:

s101, a terminal sends a detection request message to access equipment, wherein the detection request message indicates that system information of all links is requested to be obtained.

Specifically, the terminal may include a parameter for instructing to request to obtain system information of all links in the probe request message, or may include a multilink information element (e.g., a Multi link element information element) in the probe request message, where the multilink information element includes a parameter for instructing to request to obtain system information of all links, or includes the multilink information element, that is, instructs to request to obtain system information of all links in the probe request message, and does not need to include the parameter for instructing to request to obtain system information of all links in the multilink information element. The embodiment of the present invention does not limit the specific manner of indicating the request to obtain the system information of all links.

In some embodiments, the multilink information element includes multilink control parameters, multilink common information, and individual information of different links. At this time, a first parameter indicating that system information of all links is requested to be obtained may be included in the multilink common information included in the multilink information element in the probe request message. Optionally, the specific information of different links included in the multilink information element in the probe request message includes a link identifier, and when a value of the link identifier is set to a preset value, it indicates that system information of all links is requested to be obtained. Illustratively, the predetermined value is a maximum value that can be represented by the number of bits of the link identifier in the specific information of the different links included in the multilink information element in the probe request message.

Optionally, the multilink control parameter in the multilink information element includes a type of the multilink information element, and indicates whether the multilink common information includes an address of the device, where the type of the multilink information element is selected from: a basic multilink information element; a proprietary information element for probe request messages; a proprietary information element for the connection request message; a proprietary information element for the connection response message.

S102, after receiving the detection request message, the access device sends a detection response message to the terminal, wherein the detection response message comprises system information of all links.

After receiving the probe request message, the access device constructs a probe response message according to the information in the probe request message, the probe response message contains the system information of all links, and sends the probe response message to the terminal.

In some embodiments, a Multi-link information element (e.g., multi-link element information element) is included in the probe response message, and system information of all links except the currently operating link is included in the proprietary information of different links included in the Multi-link information element. Alternatively, the system information of all links requested by the terminal may be included in the proprietary information of different links included in the multilink information element.

S103, the terminal establishes connection with the access equipment.

The process of establishing connection between the terminal and the access device may refer to the establishment process in the prior art. In some embodiments, the process of establishing connection between the terminal and the access device includes:

the terminal sends a connection request message (such as an association request message) to the access device, where the connection request message includes a multilink information element, where proprietary information of different links included in the multilink information element includes information of a logical terminal on a link of the terminal except a current operating link, and the information of the logical terminal includes a link identifier, capability information of the logical terminal, and requested operating information. Optionally, whether to request to establish a connection may also be indicated in the information of the logical terminal. In some embodiments, when the link identifier in the information of the logical terminal is set to a preset value, the information of the logical terminal is only provided, but the logical terminal does not establish a connection with the access device. Illustratively, the preset value is the maximum value that the number of bits of the link identifier in the information of the logical terminal can represent.

After receiving the connection request message, the access device sends a connection response message (such as an association response message) to the terminal, where the connection response message also includes a multilink information element, where proprietary information of different links included in the multilink information element includes information of a logical access point on a link of the access device except a current operating link, and the information of the logical access point includes a link identifier, capability information of the logical access point, and requested operating information, and indicates whether to establish a connection.

The terminal receives the connection response message, and if the connection response message indicates that the request is accepted, the connection is successful; if the connection response message indicates a rejection of the request, the connection fails.

For a better understanding of the present invention, the present invention is further described below in conjunction with a specific application scenario. In the specific application, the access device is an access point, the terminal STA MLD has three logical terminals STA1, STA2, and STA3, and the access point AP MLD has three logical access points AP1, AP2, and AP3.

S1001.STA1 sends a probe request message to AP1, wherein the message comprises the parameters shown in the table 1.

TABLE 1

Parameter(s)	Description of the preferred embodiment
		Multi link element	Multilink information element

Among them, the Multi link element setting is shown in table 2.

TABLE 2

Among them, multi link control settings are shown in table 3, for example.

TABLE 3

The Common info setting is shown in table 4.

TABLE 4

In some embodiments, common info may not include Complete Link parameter, and the probe request message only includes Multi Link element, that is, indicates that system information on all links is requested to be obtained, and at this time, common info sets table 5, for example.

TABLE 5

Parameter(s)	Description of the preferred embodiment
		MLD MAC Address	MAC address of a device

Wherein, link info setting is shown in table 6, for example.

TABLE 6

In some embodiments, the Link info may include a Link ID, and when the value of the Link ID is set to a predefined value, it indicates that system information of all links is requested to be obtained, for example, the Link ID occupies 4 bits, and when the value of the Link ID is set to 15, it indicates that system information of all links is requested to be obtained. At this time, the Link info setting table 7, for example, is shown.

TABLE 7

And S1002. After receiving the probe request message, the AP1 constructs a probe response message according to the parameters in the message and sends the probe response message to the STA1.

In some embodiments, if the Complete Link parameter is contained in Common info contained in the Multi Link element information element in the probe request message, then:

1) If the value of parameter Type in the Multi Link element information element is Probe request and the value of parameter Complete Link is 1, the information element Multi Link element contained in the Probe response message is constructed, and a specific setting table is, for example, table 8.

TABLE 8

Parameter(s)	Description of the invention
		Multi link control	Multilink control parameters
Common info	Multilink common information
		Link info	Proprietary information of different links

Among them, the Multi link control setting is shown in table 9, for example.

TABLE 9

The Common info setting is shown in table 10.

Watch 10

Parameter(s)	Description of the invention
		MLD MAC Address	MAC address of a device

The Link info includes all other Link information except the Link operated by the current AP1, and the setting table is, for example, table 11.

TABLE 11

And constructing Link 2info and Link 3info in the Multi Link element information element according to the Complete Profile value, which specifically comprises:

if the value of Complete Profile is 1, link 2info and Link 3info contain all system messages of the corresponding Link;

if the value of Complete Profile is 0, these parameters and their values are set according to the parameters Requested parameter 1, requested parameter 2, \8230;, requested parameter n, given in Link info in the probe request message, which is indicated in, for example, table 12.

TABLE 12

2) Otherwise, only the system information of the current link is contained in the probe response message.

In other embodiments, if the Common info contained in the Multi Link element information element in the probe request message does not contain Complete Link parameter, the AP1 determines whether to contain the Multi Link element in the probe response message according to whether the Multi Link element is contained in the probe request message, and if so, determines to feed back all system information or specified system information according to the Complete Link element in the Link info.

In other embodiments, the value of the parameter Link ID in the Link info contained in the Multi Link element information element in the probe request message is set to a predefined value, and the AP1 determines whether to feed back all system information or the specified system information according to the parameter Complete Profile in the Link info.

And S1003. After the STA1 receives the probe response message, if the message contains a Multi link element information element, the information element is sent to the equipment management unit of the terminal STA MLD to which the STA1 belongs. The device management unit of the STA MLD determines whether to initiate multilink connection according to the information in the information element Link info and the requirements of the service itself, for example, information of the other two links is provided in the Link info, and if the device management unit needs to satisfy the high-speed and low-delay services such as online games or high-definition video playing, it may determine that multilink connection needs to be initiated, and if the Link info provides information of the other two links, it needs to satisfy the low-speed services such as browsing web pages and online audio playing, it may determine that multilink connection does not need to be initiated, and select one of the three links that meets the service requirements to perform the connection process.

1) If a multilink connection needs to be initiated, STA1 sends a connection request message (e.g., an association request message) to AP1, where the connection request message includes a Multi link element information element and a setting table 13.

Watch 13

Among them, the Multi link control setting is shown in table 14, for example.

TABLE 14

The Common info setting is shown in table 15.

Watch 15

The Link info includes information of other logical terminals except the current STA1, and the setting table is, for example, table 16.

TABLE 16

The STA 2info &sta 3info setting is shown in table 17, for example.

TABLE 17

In some embodiments, the STA 2info &sta 3info may also be set as shown in table 18.

Watch 18

STA1 receives the association response message of AP1, which also includes a Multi link element information element, and the information element setting is shown as table 19. If the acceptance request is indicated in the association response message, the connection is successful, and data transmission is carried out according to the information in the message; if the rejection request is indicated in the association response message, the connection fails.

Watch 19

Parameter(s)	Description of the preferred embodiment
		Multi link control	Multilink control parameters
Common info	Multilink common information
		Link info	Proprietary information of different links

Among them, the Multi link control setting is shown in table 20.

Watch 20

The Common info setting is shown in table 21.

TABLE 21

Here, link info includes information of other logical access points except the current AP1, and the setting is shown in table 22, for example.

TABLE 22

The AP 2info &ap 3info setting is shown in table 23, for example.

TABLE 23

2) If a single link connection needs to be initiated, it is determined which logical terminal, i.e., STA1, STA2, or STA3, is used to establish a connection, for example, the determination mode may be selected according to the matching of the operating frequency of the link corresponding to the operating frequency set by the logical terminal, and after the determination, the determined logical terminal sends an association request message to the corresponding AP1, AP2, or AP3. After receiving the association response message of the AP, if the association response message indicates that the request is received, the connection is successful, and data transmission is performed according to the information in the message; if the request is denied as indicated in the association response message, the connection fails.

And S1004, after the STA1 receives the probe response message, if the message does not contain a Multi link element information element, only establishing connection with the AP1 on the link 1 is executed.

In an embodiment of the present invention, based on the same inventive concept as the above method for a terminal to discover and connect to an access device, an apparatus for a terminal to discover and connect to an access device is further provided in an embodiment of the present invention, and includes:

The embodiment of the invention also provides another device for discovering and connecting the terminal to the access equipment, which comprises the following steps:

a receiving module, configured to receive, through an access device, a probe request message sent by a terminal, where the probe request message indicates a request for obtaining system information of all links;

In the embodiment of the present invention, based on the same inventive concept as the above-mentioned method for a terminal to discover and connect to an access device, the embodiment of the present invention further provides an apparatus for a terminal to discover and connect to an access device, where the apparatus includes a processor and a memory, where the memory stores at least one instruction, at least one piece of program code, a set of codes, or a set of instructions, and the at least one instruction, at least one piece of program code, the set of codes, or the set of instructions is loaded and executed by the processor to implement the method for a terminal to discover and connect to an access device according to the above-mentioned embodiment.

Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where at least one instruction, at least one program code, a code set, or a set of instructions is stored in the storage medium, and the at least one instruction, the at least one program code, the code set, or the set of instructions is loaded and executed by a processor to implement the method for a terminal to discover and connect to an access device according to the foregoing embodiments.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not imply an order of execution, some or all steps may be executed in parallel or executed sequentially, and the order of execution of each process should be determined by its function and inherent logic, and should not limit the implementation process of the embodiments of the present invention in any way.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented.

The modules described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more modules are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device or a terminal, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, ROM, RAM) magnetic or optical disk, or the like.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method for a terminal to discover and connect to an access device, comprising:

a terminal receives a detection response message sent by access equipment, wherein the detection response message comprises system information of all links;

the terminal establishes a connection with the access device.

2. The method of claim 1, wherein the probe request message and/or the probe response message contains a multilink information element, and wherein the multilink information element contains multilink control parameters, multilink common information, and individual information of different links.

3. The method according to claim 2, wherein the multilink common information contained in the multilink information element in the probe request message includes a first parameter, and the first parameter is used to indicate that system information of all links is requested to be obtained.

4. The method of claim 2, wherein the probe request message includes the multilink information element (MIB) indicating that system information for all links is requested.

5. The method according to claim 2, wherein the specific information of different links contained in the multilink information element in the probe request message includes a link identifier, and when the value of the link identifier is set to the first preset value, the method indicates that system information of all links is requested to be obtained.

6. The method as claimed in claim 5, wherein the first predetermined value is a maximum value that can be represented by a bit number of a link id in the specific information of different links included in the multilink information element in the probe request message.

7. The method according to claim 2, wherein the specific information of different links contained in the multilink information element in the probe response message contains system information of all links except the currently operating link.

8. The method of claim 2, wherein the terminal establishing the connection with the access device comprises:

a terminal sends a connection request message to an access device, wherein the connection request message contains the multilink information element, the proprietary information of different links contained in the multilink information element in the connection request message contains the information of a logic terminal on a link of the terminal except a current operation link, and the information of the logic terminal contains a link identifier, the capability information of the logic terminal and the requested operation information;

9. The method of claim 8, wherein the information of the logical terminal further indicates whether to request connection establishment.

10. The method of claim 8, wherein when the link id in the information of the logical terminal is set to the second preset value, it indicates that only the information of the logical terminal is provided, but the logical terminal does not establish a connection with the access device.

11. The method of claim 10, wherein the second predetermined value is a maximum value that can be represented by a number of bits of a link id in the information of the logical terminal.

12. A method for a terminal to discover and connect to an access device according to any of claims 2-11, wherein the multilink control parameter includes a type of multilink information element and indicates whether the address of the device is included in the multilink common information, the type of multilink information element being selected from: a basic multilink information element; a proprietary information element for probe request messages; a proprietary information element for the connection request message; a proprietary information element for the connection response message.

13. A method for a terminal to discover and connect to an access device, comprising:

the access device establishes a connection with the terminal.

14. The method of claim 13, wherein the probe request message and/or the probe response message includes a multilink information element, and wherein the multilink information element includes multilink control parameters, multilink common information, and individual information of different links.

15. The method of claim 14, wherein the multilink common information included in the multilink information element in the probe request message includes a first parameter, and wherein the first parameter is used to indicate that system information of all links is requested to be obtained.

16. The method of claim 14, wherein the probe request message includes the multilink information element (dl ie) indicating system information requesting all links.

17. The method of claim 14, wherein the specific information of different links contained in the multilink information element in the probe request message includes a link id, and when the value of the link id is set to the first preset value, the method indicates that system information of all links is requested to be obtained.

18. The method of claim 17, wherein the first predetermined value is a maximum value that can be represented by a bit number of a link id in the specific information of different links included in the multilink information element in the probe request message.

19. The method of claim 14, wherein the multi-link information element in the probe response message contains the system information of all links except the currently operating link.

20. The method of claim 14, wherein the step of the access device establishing the connection with the terminal comprises:

the access device sends a connection response message to the terminal, the connection response message includes the multilink information element, the proprietary information of different links included in the multilink information element in the connection response message includes information of a logical access point on a link of the access device except a current operation link, and the information of the logical access point includes a link identification, capability information of the logical access point and requested operation information and indicates whether to establish connection.

21. The method of claim 20, wherein the information of the logical terminal further indicates whether to request connection establishment.

22. The method of claim 20, wherein when the link id in the information of the logical terminal is set to the second preset value, it indicates that only the information of the logical terminal is provided, but the logical terminal does not establish a connection with the access device.

23. The method of claim 22, wherein the second predetermined value is a maximum value that can be represented by a bit number of a link id in the information of the logical terminal.

24. A method for a terminal to discover and connect to an access device according to any of claims 14-23, characterized in that the multilink control parameters include the type of multilink information element and indicate whether the address of the device is included in the multilink common information, the type of multilink information element being selected from: a basic multilink information element; a proprietary information element for probe request messages; a proprietary information element for the connection request message; a proprietary information element for the connection response message.

25. An apparatus for a terminal to discover and connect to an access device, comprising:

26. An apparatus for a terminal to discover and connect to an access device, comprising:

27. A system for a terminal to discover and connect to an access device, the system comprising a terminal and an access device, the terminal being configured to perform the method for the terminal to discover and connect to an access device of any of claims 1-12, the access device being configured to perform the method for the terminal to discover and connect to an access device of any of claims 12-24.

28. An apparatus for a terminal to discover and connect to an access device, the apparatus comprising a processor and a memory, the memory having stored therein at least one instruction, at least one piece of program code, a set of codes, or a set of instructions, the at least one instruction, at least one piece of program code, a set of codes, or a set of instructions, which is loaded and executed by the processor to implement the method for a terminal to discover and connect to an access device of any one of claims 1-24.

29. A computer readable storage medium, having stored therein at least one instruction, at least one piece of program code, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement the method for a terminal to discover and connect to an access device according to any one of claims 1-24.