WO2015089717A1

WO2015089717A1 - Station access method, station apparatus, and access system

Info

Publication number: WO2015089717A1
Application number: PCT/CN2013/089583
Authority: WO
Inventors: 赵牧; 杨浔; 唐厚成
Original assignee: 华为技术有限公司
Priority date: 2013-12-16
Filing date: 2013-12-16
Publication date: 2015-06-25

Abstract

Disclosed are a station access method, a station apparatus, and an access system. The method comprises: a station sending an association request in a multicast manner; the station receiving an association response, and detecting whether the association response carries a successful identification indicating that the station and an access point are successfully associated; and if it is detected that the association response has the successful identification, determining that the station successfully establishes an association with the access point.

Description

Site access method, station device, access system

The present invention relates to the field of communications technologies, and in particular, to a site access method, a site device, and an access system. Background technique

At present, APs (Access Points) are more densely deployed in airports, stations, shopping malls and other places. The distance between APs is relatively close, and there are usually multiple APs in the communication range of one STA (Station). In hotspots where APs are densely deployed, the channel environment is unstable. When the communication between the STA and the current AP is interfered, it is usually necessary to select a new AP for association (ie, access) and communication. In the existing WLAN (Wireless Local Area Networks) technology, the association process between the STA and multiple ports needs to be performed in sequence, and only one association process is initiated to one node at a time, and the STA can communicate with it after successfully associating with the UI. . If the STA wants to communicate with another one, it will initiate an association process to the new one, and the association will succeed before it can communicate.

Assuming that the STA needs to be associated with ΑΡ1, ΑΡ2, and ΑΡ3, then the STA needs to send the "association request frame" and the API association once; then send the second "association request frame" and AP2 association; finally send the third "association request frame". "Associated with AP3." The destination addresses of the three "association request frames" sent are different.

In summary, the existing association between the STA and the AP is a one-to-one association. Therefore, when the STA is associated with multiple APs, it takes too long and is inefficient. Summary of the invention

The present invention provides a site access method, a site device, and an access system, which are used to solve the technical problem that the STA existing in the prior art is too long and inefficient when establishing a process of association with multiple APs.

In a first aspect, a method for site access is described, including: a site transmitting an association in a multicast manner The request receives the association response, and detects whether the association response carries a success identifier indicating that the site and the access point are successfully associated; and if the association response is detected to have the success identifier, confirming the site Successfully establishing an association with the access point.

With reference to the first aspect, in a first possible implementation, the association request carries the indication information, where the indication information is used to indicate that the access point sends the association response when the channel is idle.

With reference to the first aspect and the first possible implementation manner, in a second possible implementation manner, the site sends an association request in a multicast manner, where specifically: the site sends the association request in a broadcast manner; or The station sends the association request in a multicast manner.

With reference to the second possible implementation manner, in a third possible implementation manner, when the site sends the association request in a broadcast manner: the destination address of the association request is a broadcast address; and/or the association request The basic service area number in the form of a wildcard, or multiple basic service area numbers, or an extended service set number.

With reference to the second possible implementation manner, in a fourth possible implementation manner, when the site sends the association request in a multicast manner: the destination address of the association request is a multicast address; and/or the The association request carries the basic service area number in the form of a wildcard, or carries multiple basic service area numbers, or carries an extended service set number.

In a second aspect, a site apparatus is provided, including: a sending unit, configured to send an association request in a multicast manner; and a detecting unit, configured to: after the sending unit sends the association request in a multicast manner, receive an association response, and detect the location Whether the association response carries a success identifier indicating that the site and the access point are successfully associated; the confirmation unit is configured to: if the detecting unit detects that the association response has the success identifier, confirm the site and the The access point successfully establishes an association.

With reference to the second aspect, in a first possible implementation, the association request carries the indication information, where the indication information is used to indicate that the access point sends the association response when the channel is idle.

With reference to the second aspect and the first possible implementation manner, in a second possible implementation manner, the sending unit is specifically configured to send the association request in a broadcast manner; or send the device in a multicast manner. Describe the request.

With reference to the second possible implementation manner, in a third possible implementation manner, when the sending unit sends the association request in a broadcast manner, the destination address of the association request is a broadcast address; and/or, The association request carries the basic service area number in the form of a wildcard, or carries multiple basic service area numbers, or carries an extended service set number.

With reference to the second possible implementation manner, in a fourth possible implementation manner, when the sending unit sends the association request in a multicast manner: the destination address of the association request is a multicast address; and/or The association request carries the basic service area number in the form of a wildcard, or carries multiple basic service area numbers, or carries an extended service set number.

In a third aspect, a method for accessing a site is described, including: after a station is connected to a first access point, sending a re-association request in a unicast or multicast manner, where the re-association request carries multiple associations The station receives the re-association response, and detects whether the re-association response has a success identifier indicating that the re-association succeeds; if the re-association response is detected to have the success identifier, confirming the site and the second The access point successfully establishes an association.

With reference to the third aspect, in a first possible implementation manner, the re-association request further carries indication information, where the indication information is used to indicate that the second access point sends a station when the channel is idle. Describe the association response.

With the third aspect and the first possible implementation manner, in a second possible implementation manner, the re-association request is sent in a multicast manner, specifically: sending the association request in a broadcast manner; or in a multicast manner Send the association request.

In a fourth aspect, a site apparatus is provided, including: a sending module, configured to send a re-association request in a unicast or multicast manner when the first access point is connected, where the re-association request carries a multi-association identifier, configured to: after the sending module sends the re-association request in a unicast or multicast manner, receive a re-association response, and detect whether the re-association response has a success identifier indicating that the re-association succeeds And a confirmation module, configured to: if the detection module detects that the re-association response has the success identifier, confirm that the site and the second access point successfully establish an association.

With reference to the fourth aspect, in a first possible implementation manner, the re-association request is further carried Instructing information, where the indication information is used to indicate that the second access point sends the re-association response when the channel is idle.

With reference to the fourth aspect and the first possible implementation manner, in a second possible implementation, the sending module is specifically configured to send the association request in a broadcast manner, or send the association request in a multicast manner.

The fifth aspect describes an access system, including a site and an access point, where the site is configured to send an association request to the access point in a multicast manner, receive an association response, and detect whether the association response is Having a success identifier indicating that the association is successful; if it is detected that the association response has the success identifier, confirm that the site and the access point successfully establish an association; and the access point is configured to respond to the association request, And sending the association response after the connection is successfully established with the site, where the association response carries the success identifier.

With reference to the fifth aspect, in a first possible implementation, the association request carries the indication information, and the access point is specifically configured to send, according to the indication information, the association response after the channel is idle.

With reference to the fifth aspect, in a second possible implementation manner, the site is further configured to: after being connected to the first access point, send a re-association request in a unicast or multicast manner, where The association request carries a multi-association identifier; receives a re-association response, and detects whether the re-association response has a success identifier indicating that the re-association succeeds; if the re-association response is detected to have the success identifier, confirming the site Successfully establishing an association with the access point; the access point is further configured to: respond to the re-association request, and send the re-association response after successfully establishing a connection with the site, where the re-association response carries The success indicator.

With reference to the second possible implementation manner, in a third possible implementation manner, the re-association request carries the indication information, where the access point is specifically configured to: after listening to the channel idle, according to the indication information Send the reassociation response.

One or more technical solutions in the foregoing technical solutions have the following technical effects or advantages: In the present invention, when a site needs to be associated with multiple access points, the association request is sent in a multicast manner instead of one in sequence. Send an association request to multiple access points for one, and use multicast The method of sending an association request may enable multiple access points to receive and respond to the association request, so that the station can access multiple access point connections by initiating an association request procedure, which saves time for connecting the site and multiple access points. efficient. DRAWINGS

1 is a process diagram of a site access method according to Embodiment 1 of the present invention;

2 is a schematic diagram of a station device according to Embodiment 2 of the present invention;

3 is a process diagram of a site access method according to Embodiment 3 of the present invention;

4 is a schematic diagram of a station device in Embodiment 4 of the present invention. detailed description

In order to solve the technical problem that the STA existing in the prior art is associated with multiple APs, which is time consuming and inefficient, the embodiment of the present invention provides a site access method, a site device, and an access system. The overall idea of the solution is as follows:

The STA initiates an association request to the AP in a multicast mode, such as multicast or broadcast mode, and receives an association response returned by the AP, so that association can be established with multiple APs through an association request initiation process.

The technical solutions of the present invention are described in detail below with reference to the accompanying drawings and specific embodiments. It is understood that the specific features of the embodiments and the embodiments of the present invention are the detailed description of the technical solutions of the present invention. In the case of no conflict, the technical features of the embodiments of the present invention and the embodiments may be combined with each other.

Embodiments of the present invention describe various aspects in connection with a site and an access point.

The site is the most basic component of a wireless LAN, and is generally a client in a WLAN. It can be a computer with a wireless network card or a smart phone with a WiFi module. Sites can be mobile or fixed.

The access point, which mainly provides access to the wired LAN from the site, and access from the wired LAN to the site, through which the sites within the coverage of the access point can communicate with each other. It can be considered as a wireless switch, only to provide wireless signal transmission. How it works The network signal is transmitted through the twisted pair. After the access point is compiled, the electrical signal is converted into a radio signal and sent out to form a coverage of the wireless network. According to different powers, it can achieve network coverage of different degrees and different ranges.

BSS (Basic Service Set) refers to the range covered by an AP. Each BSS is identified by a BSSID (Basic Service Set Identifier), which is a 48-bit binary identifier. The simplest WLAN can be established by a BSS, all sites are in the same BSS.

Two or more BSSs can form a single subnet, ESS (Extended Service Set), for scenarios with multiple APs. That is, the ESS consists of all access points under the same logical management domain and refers to a structured network consisting of multiple access points and distributed systems connecting them. The ESS is identified by an ESSID (Extended Service Set Identifier).

In an AP scenario, the site and the AP's BSSID are the same to communicate. That is, the site and the AP in the same BSS coverage area can communicate. In the scenario of multiple APs, the ESSID of the site and the AP can be the same, that is, the same ESS coverage. Sites and APs in the area can communicate, and the ESS coverage area may contain multiple BSS areas.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

Embodiment 1:

Referring to FIG. 1 , a site access method is described in the embodiment of the present invention. The main implementation process of the method is as follows:

S101. The station sends an association request in a multicast manner. Module of the smartphone.

"The site sends the association request in multicast mode" mainly includes two aspects, that is, the site sends the association request by broadcast; or the site sends the association request in multicast mode. When the association request is sent in the multicast mode, the access point needs to be divided into multicast groups. Specifically, the access points in the same ESS area can be assigned the same multicast address. Specifically, when the site sends the association request by broadcast, it includes one or several combinations of the following methods:

The destination MAC address of the association request is the broadcast MAC address;

The destination IP address of the association request is the broadcast IP address, that is, the host ID segment host ID is the IP address of all 1s;

The association request carries the basic service area number in the form of a wildcard, or carries multiple basic service area numbers, or carries an extended service set number. (ie, the BSSID field value in the association request is set to a wildcard, or the BSSID field value is ESSID or contains multiple BSSIDs).

If the value of the BSSID field in the association request is set to ESSID, the ESSID may correspond to one or more BSSIDs, and the BSSIDs belong to the same group of access points. If the BSSID field value in the association request contains multiple BSSIDs, these BSSIDs belong to the same group access point, that is, belong to the same ESSID.

When a site sends an association request in multicast mode, it includes one or several of the following methods:

The destination MAC address of the association request is a multicast MAC address;

The destination IP address of the association request is a multicast ID address;

S102. The station receives the association response, and detects whether the association response carries a success identifier indicating that the site and the access point are successfully associated.

The association response is sent when the access point receives an association request and confirms that it can associate with the site. Specifically, after receiving the association request, the access point determines the SSID ( SSID) carried in the association request. Is the general name of the BSSID and the ESSID) whether it matches the BSSID or ESSID of the access point, if it matches, it can associate with the station that sends the association request, and further returns an association response, where the carrying station and the access point are carried A successful success indicator of the association, the success identifier is used to represent the success of the access point and the site establishment relationship; otherwise, the association is not associated with the site that sends the association request, and the association response may be further returned, where the bearer represents the association between the site and the access point. The failed failure identifier, of course, may not return the associated response carrying the failure identifier.

In the embodiment of the present invention, if the value of the BSSID field in the association request is set to a wildcard format, when the access point compares with the BSSID or ESSID of the self, the access point confirms that the two match, and therefore sends an association response, where Carry a success identifier indicating that the site and the access point are successfully associated. If the BSSID field in the association request carries the ESSID or multiple BSSIDs, the access point confirms that its BSSID is the same as the BSSID carried in the association request or belongs to the ESSID when comparing the wildcard with its own BSSID or ESSID. The corresponding BSSID is considered to be matched, so an association response is sent, which carries a success identifier indicating that the site and the access point are successfully associated.

If the destination address of the association request is a multicast address, the access point further confirms whether it belongs to the multicast group corresponding to the multicast address after receiving the association request, and if the multicast group belongs to the multicast group, the The BSSID or the ESSID carried in the association request is compared with the BSSID or the ESSID of the association, so as to determine whether the association can be established with the site that sends the association request. The specific matching method is the same as before, and will not be described in detail here.

S103. If it is detected that the association response has a success identifier, confirm that the site and the access point successfully establish an association. Thereafter, the site can access the network through an access point that is successfully associated with it.

Further, the association request may carry indication information, where the indication information is used to indicate that the access point sends the association response when the channel is idle. Correspondingly, after receiving the association request, the access point performs channel monitoring according to the indication information carried in the association request, and then sends an association response when the channel is idle, thereby preventing multiple access points from simultaneously sending the association response to the station. The situation that caused channel blockage occurred.

Based on the same inventive concept, the following embodiment introduces a site device.

Embodiment 2: Referring to FIG. 2, the site device specifically includes:

The sending unit 201 is configured to send the association request in a multicast manner.

The detecting unit 202 is configured to: after the sending unit 201 sends the association request in a multicast manner, receive the association response, and detect whether the association response carries a success identifier indicating that the site and the access point are successfully associated.

The confirming unit 203 is configured to: if the detecting unit 202 detects that the association response has a success identifier, confirm that the station and the access point successfully establish an association.

Further, the association request carries the indication information, where the indication information is used to indicate that the access point sends the association response when the channel is idle.

Further, the sending unit 201 is specifically configured to send an association request in a broadcast manner, or send an association request in a multicast manner.

Further, when the sending unit 201 sends the association request in a broadcast manner: the destination address of the association request is a broadcast address; and/or, the association request carries a basic service area number in the form of a wildcard, or carries multiple basic service area numbers, or carries Extended service collection number.

Further, when the sending unit 201 sends the association request in a multicast manner: the destination address of the association request is a multicast address; and/or, the association request carries a basic service area number in the form of a wildcard, or carries multiple basic service area numbers, Or carry an extended service collection number.

In the embodiment of the present invention, when the site needs to be associated with multiple access points, the sending unit 201 sends the association request in a multicast manner, instead of sequentially sending the association request to multiple access points one by one. Sending an association request in multicast mode may enable multiple access points to receive and respond to the association request, thereby enabling the station to access multiple access point connections by initiating an association request procedure, saving site and multiple accesses. Point connection time and high efficiency.

Embodiment 3:

Referring to FIG. 3, a site access method is described in the embodiment of the present application. The specific implementation process of the method is as follows:

S301. After connecting to the first access point, the station sends a re-association request in a unicast or multicast manner. The reassociation request carries a multi-association identifier. The specific role of the multi-association identifier is to inform the second access point that the "site and the first access point are associated" message.

Optionally, in the embodiment of the present invention, when the site is associated with the first access point, the existing association manner may be used, or the association manner described above in the present invention may be used.

Further, the station may send a re-association request in a unicast manner or send a re-association request in a multicast manner.

When a site sends a reassociation request in unicast mode, it includes one or several combinations of the following methods: The destination MAC address in the reassociation request is "unicast MAC address".

The destination IP address in the reassociation request is the broadcast IP address, that is, the host ID segment is the IP address of all 1s;

The BSSID field value in the association request is set to the BSSID of the second access point.

When a site sends a reassociation request in multicast mode, it mainly includes two aspects, specifically: the site sends the association request by broadcast; or the site sends the association request in multicast mode.

Specifically, when the station sends a re-association request by broadcast, it includes one or several combinations of the following methods:

The destination MAC address of the reassociation request is the broadcast MAC address.

The destination IP address of the reassociation request is the broadcast ID (identity number), that is, the all-in-one broadcast IP (Internet Protocol) protocol address.

The reassociation request carries the basic service area number in the form of a wildcard, or carries multiple basic service area numbers, or carries an extended service set number. (ie, the BSSID field value in the association request is set to a wildcard, or the BSSID field value is ESSID or contains multiple BSSIDs).

When a site sends a reassociation request in multicast mode, it includes one or several combinations of the following methods: The destination MAC address of the reassociation request is the broadcast MAC address.

The destination IP address of the reassociation request is the multicast ID (identity, identity number), that is, the IP address belonging to the same group.

Wherein, if the BSSID field value in the association request is set to ESSID, the ESSID may correspond to one or more BSSIDs, and the BSSIDs belong to the same group access point. If the BSSID field value in the association request contains multiple BSSIDs, then these BSSIDs belong to the same group access point, that is, belong to the same ESSID.

S302. The station receives the re-association response, and detects whether the re-association response has a success indicator indicating that the re-association succeeds.

Optionally, the association response is sent after the second access point receives the re-association request and confirms that the association can be established with the site.

Specifically, after receiving the re-association request, the second access point determines whether the SSID (the SSID is a general name of the BSSID and the ESSID) carried in the re-association request matches the BSSID or the ESSID of the second access point, The matching may be associated with the site that sent the re-association request, and further returned an association response, where the success identifier indicating that the site and the second access point are successfully associated is carried, and the success identifier is used to represent the success of the second access point. The site establishes a relationship; otherwise, it does not associate with the site that sends the re-association request, and may further return an association response, where the failure identifier indicating that the association between the site and the second access point fails is carried, and of course, the failure identifier may not be returned. Associate response.

In the embodiment of the present invention, if the value of the BSSID field in the reassociation request is set to a wildcard format, when the second access point compares with the BSSID or ESSID of the self, the second access point confirms that the two match, and therefore sends the association. The response carries a success identifier indicating that the site and the second access point are successfully associated. If the BSSID field in the reassociation request carries the ESSID or the multiple BSSIDs, the second access point confirms its own BSSID and the BSSID carried in the reassociation request when comparing the wildcard with its own BSSID or ESSID. Same or belonging to the BSSID corresponding to the ESSID, then It is considered that the two match, and therefore an association response is sent, which carries a success indicator i indicating that the site and the second access point are successfully associated.

If the destination address of the re-association request is a multicast address, the second access point further confirms whether it belongs to the multicast group corresponding to the multicast address after receiving the re-association request, and if it belongs to the multicast group, The BSSID or the ESSID carried in the re-association request may be further compared with the BSSID or the ESSID of the re-association request to determine whether the association with the re-association request is established. The specific matching method is the same as before, and will not be described in detail herein.

S303. If it is detected that the re-association response has a success identifier, confirm that the station and the second access point successfully establish an association.

Thereafter, the site can access the network through an access point that is successfully associated with it.

Further, the re-association request further carries indication information, where the indication information is used to indicate that the second access point sends a re-association response when the channel is idle.

Further, after receiving the re-association request, the second access point performs channel monitoring according to the indication information carried in the re-association request, and then re-transmits the re-association response when the channel is idle, thereby avoiding multiple second accesses. The point where the point sends a correlation response to the station at the same time causes a channel jam.

In the embodiment of the present invention, the successful identification is specifically to characterize the success of the second access point and the establishment relationship of the site.

Based on the same inventive concept, the following embodiment describes a site device.

Embodiment 4:

Referring to FIG. 4, the site device specifically includes:

The sending module 401 is configured to send a re-association request in a unicast or multicast manner when the first access point is connected, where the re-association request carries the multi-association identifier.

The detecting module 402 is configured to: after the sending module 401 sends the re-association request in a unicast or multicast manner, receive a re-association response, and detect whether the re-association response has a success indicator indicating that the re-association succeeds.

The confirmation module 403 is configured to: if the detection module 402 detects that the re-association response has a success identifier, confirm that the station and the second access point successfully establish an association. Further, the re-association request further carries indication information, where the indication information is used to indicate that the second access point sends a re-association response when the channel is idle.

Further, the sending module 401 is specifically configured to send the association request in a broadcast manner. Or send an association request in multicast mode.

Embodiment 5:

In the embodiment of the present invention, an access system is introduced, including a site and an access point.

Site, used to send an association request to the access point in a multicast manner. The association response is received, and it is detected whether the association response has a success identifier indicating that the association is successful. If it is detected that there is a success indicator in the association response, confirm that the site and the access point successfully establish an association.

The access point is configured to respond to the association request, and sends an association response after successfully establishing a connection with the site, where the association response carries a success identifier.

Further, the association request carries the indication information.

The access point is specifically configured to send an association response after listening to the channel idle according to the indication information. Further, the site is further configured to: after being connected to the first access point, send a re-association request in a unicast or multicast manner, where the re-association request carries the multi-association identifier. A reassociation response is received, and a re-association response is detected whether there is a success indicator indicating successful re-association. If a successful identity is detected in the reassociation response, the site and the access point are successfully associated.

The access point is further configured to respond to the re-association request, and send a re-connection response after successfully establishing a connection with the site, where the re-association response carries a success identifier.

Further, the re-association request carries the indication information.

The access point is specifically configured to send, according to the indication information, a re-association response after the channel is idle. Through one or more embodiments of the present invention, the following technical effects can be achieved:

In the present invention, when the site needs to be associated with multiple access points, the association request is sent in a multicast manner, instead of sequentially sending one-to-one association requests to multiple access points, using multicast mode. Sending the association request may enable multiple access points to receive and respond to the association request, so that the station can access multiple access point connections by initiating an association request procedure, saving time and efficiency of connection between the site and multiple access points. high. Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowcharts and/or block diagrams, and combinations of flow and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

1. A site access method, characterized by including:

The site sends association requests in a multicast manner;

The station receives the association response, and detects whether the association response carries a success identifier indicating that the station and the access point are successfully associated;

If it is detected that the association response contains the success identifier, it is confirmed that the station and the access point are successfully associated.

2. The method of claim 1, wherein the association request carries indication information, wherein the indication information is used to instruct the access point to send the association response when it detects that the channel is idle.

3. The method according to any one of claims 1 or 2, characterized in that the site sends association requests in a multicast manner, specifically:

The site sends the association request in a broadcast manner; or

The site sends the association request in a multicast manner.

4. The method of claim 3, wherein when the site sends the association request in a broadcast manner:

The destination address of the association request is a broadcast address; and/or

The association request carries a basic service area number in the form of a wildcard, or carries multiple basic service area numbers, or carries an extended service set number.

5. The method of claim 3, wherein when the site sends the association request in a multicast manner:

The destination address of the association request is a multicast address; and/or

6. A site device, characterized by including:

The sending unit is used to send association requests in multicast mode; A detection unit, configured to receive an association response after the sending unit sends an association request in a multicast manner, and detect whether the association response carries a success identifier indicating that the station and the access point are successfully associated;

a confirmation unit, configured to confirm that the station and the access point successfully establish association if the detection unit detects that the association response contains the success identifier.

7. The apparatus according to claim 6, wherein the association request carries indication information, wherein the indication information is used to instruct the access point to send the association response when it detects that the channel is idle.

8. The device according to claim 6 or 7, wherein the sending unit is specifically configured to send the association request in a broadcast manner; or to send the association request in a multicast manner.

9. The device according to claim 8, wherein when the sending unit sends the association request in a broadcast manner: the destination address of the association request is a broadcast address; and/or the association request carries a wildcard A basic service area number in the form, or carries multiple basic service area numbers, or carries an extended service set number.

10. The device according to claim 8, wherein when the sending unit sends the association request in a multicast manner: the destination address of the association request is a multicast address; and/or in the association request Carry a basic service area number in the form of a wildcard, or carry multiple basic service area numbers, or carry an extended service set number.

11. A site access method, characterized by including:

After connecting to the first access point, the station sends a re-association request in a unicast or multicast manner, wherein the re-association request carries a multi-association identifier;

The site receives a re-association response, and detects whether the re-association response contains a success flag indicating successful re-association;

If it is detected that the re-association response contains the success identifier, it is confirmed that the station and the second access point are successfully associated.

12. The method of claim 11, wherein the re-association request also carries indication information, wherein the indication information is used to indicate that the second access point detects that the channel is idle. The re-association response is sent when

13. The method according to any one of claims 11 or 12, characterized in that the re-association request is sent in a multicast manner, specifically:

The association request is sent in a broadcast manner; or the association request is sent in a multicast manner.

14. A site device, characterized by including:

A sending module, configured to send a re-association request in a unicast or multicast manner when connected to the first access point, wherein the re-association request carries a multi-association identifier;

A detection module, configured to receive a re-association response after the sending module sends a re-association request in a unicast or multicast manner, and detect whether the re-association response contains a success identifier indicating successful re-association;

A confirmation module, configured to confirm that the station and the second access point successfully establish association if the detection module detects that the re-association response contains the success identifier.

15. The apparatus according to claim 14, wherein the re-association request also carries indication information, wherein the indication information is used to instruct the second access point to send the information when it detects that the channel is idle. Restate the association response.

16. The device according to claim 14 or 15, wherein the sending module is specifically configured to send the association request in a broadcast manner; or to send the association request in a multicast manner.

17. An access system, characterized by including a site and an access point;

The site is configured to send an association request to an access point in a multicast manner; receive an association response, and detect whether the association response contains a success identifier indicating successful association; if it is detected that the association response contains the Success identification, confirming that the site and the access point are successfully associated; the access point is used to respond to the association request, and send the association response after successfully establishing a connection with the site, the association The response carries the success identifier.

18. The system of claim 17, wherein the association request carries indication information;

The access point is specifically configured to send the said channel after monitoring that the channel is idle according to the indication information. Correlation response.

19. The system of claim 17, wherein the station is further configured to, after connecting to the first access point, send a re-association request in a unicast or multicast manner, wherein the re-association request The association request carries multiple association identifiers; receives a re-association response, and detects whether the re-association response contains a success identifier indicating successful re-association; if it is detected that the re-association response contains the success identifier, confirms the site Successfully establish association with the access point;

The access point is further configured to respond to the re-association request, and send the re-association response after successfully establishing a connection with the site, where the re-association response carries the success identifier.

20. The system of claim 19, wherein the re-association request carries indication information;

The access point is specifically configured to, according to the indication information, send the re-association response after monitoring that the channel is idle.