WO2019114498A1 - Ap间的切换方法、ap及ap协同工作控制器 - Google Patents

Ap间的切换方法、ap及ap协同工作控制器 Download PDF

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Publication number
WO2019114498A1
WO2019114498A1 PCT/CN2018/116103 CN2018116103W WO2019114498A1 WO 2019114498 A1 WO2019114498 A1 WO 2019114498A1 CN 2018116103 W CN2018116103 W CN 2018116103W WO 2019114498 A1 WO2019114498 A1 WO 2019114498A1
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Prior art keywords
bssid
site
information
cooperative working
station
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PCT/CN2018/116103
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English (en)
French (fr)
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陈道伟
王新余
董伟杰
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中兴通讯股份有限公司
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Priority to EP18888600.6A priority Critical patent/EP3726884A4/en
Publication of WO2019114498A1 publication Critical patent/WO2019114498A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/12—Access point controller devices

Definitions

  • the present invention relates to the field of multiple access points (APs) networking, and in particular, to a method for switching between APs, an AP and an AP cooperative working controller.
  • APs multiple access points
  • the embodiment of the present invention provides a method for switching between APs, and an AP and an AP cooperative working controller, so as to solve at least the problem that the STA has a long switching time when the STA switches between APs in the related art.
  • a method for switching between access points APs including: a first access point AP requests a basic service set identifier (BSSID) from an AP cooperative working controller, and is based on The BSSID obtained by the application is associated with a site associated with the request, wherein each BSSID corresponds to one site; the first AP receives a handover from the first AP to the AP collaborative work controller from the AP a notification of the second AP; the first AP transmits the associated site information and the associated BSSID information to the second AP, and switches the site to the second AP.
  • BSSID basic service set identifier
  • the first AP requests the basic service set identifier BSSID from the AP cooperative working controller, and associates with the site based on the BSSID obtained by the application, including: the first AP cooperates with the AP to work with the AP.
  • the BSSID resource pool applies for an idle BSSID, and broadcasts a beacon frame with the BSSID applied for; the first AP associates with the site in response to the association request of the site.
  • the method further includes: the first AP synchronizing the associated site information and BSSID information to the AP cooperative working controller.
  • the method further includes: when the first AP is de-associated with the site or has no response timeout, the first AP is to the The BSSID resource pool of the AP cooperative working controller returns the applied BSSID.
  • the method before the first AP receives the notification that the station is switched from the first AP to the second AP, the method further includes: the first AP and the second AP respectively speaking to the AP
  • the cooperative working controller reports the detected signal quality of the station; the AP cooperative working controller determines, according to the reported signal quality of the station, whether to switch the station from the first AP to the second AP. .
  • the first AP switches the site to the second AP, where the first AP requests the second AP to switch the site to the second AP;
  • the first AP terminates the association with the site according to the handover response of the second AP, and forwards the associated BSSID control right to the second AP.
  • the site information includes: a MAC address of the site, a key negotiated by the site with the first AP; and the BSSID information includes a BSSID name.
  • the number of APs is multiple, all APs work on the same channel, and the AP cooperative working controller is a home gateway or one of the multiple APs.
  • an access point AP including: an association module, configured to apply, to an AP cooperative working controller, a basic service set identifier BSSID, and associate the request with the BSSID obtained according to the application.
  • the site is associated, wherein each BSSID corresponds to one site;
  • the receiving module is configured to receive a notification from the AP cooperative working controller to switch the site from itself to the second AP;
  • the switching module is configured to be associated
  • the site information and the associated BSSID information are communicated to the second AP and the site is handed over to the second AP.
  • the AP further includes: a synchronization module configured to synchronize the associated site information and the BSSID information to the AP cooperative working controller.
  • the AP further includes: a reporting module, configured to report the detected signal quality of the station to the AP cooperative working controller.
  • the switching module includes: a requesting unit, configured to request the second AP to switch the site to the second AP; and the switching unit is configured to terminate according to a handover response of the second AP Determining the association of the site and transferring the associated BSSID control to the second AP.
  • the site information includes: a MAC address of the site, a key negotiated by the site with the first AP; and the BSSID information includes a BSSID name.
  • a method for switching between access points APs including: an AP cooperative working controller receives a basic service set identifier BSSID application from a first access point AP; and an AP cooperative working controller Assigning, to the first AP, a BSSID according to the application, where the BSSID is used to associate a site that requests an association with the first AP, where each BSSID corresponds to one site; and the AP cooperative working controller notifies the first AP that The station switches from the first AP to the second AP.
  • the method further includes: site information and BSSID information associated with the first AP synchronization by the AP cooperative working controller, and The site information and the BSSID information are synchronized to the second AP.
  • the method before the AP cooperative working controller notifies the first AP to switch the site from the first AP to the second AP, the method further includes: the AP cooperative working controller receives the first AP and the Determining, by the second AP, the detected signal quality of the station; determining, according to the reported signal quality of the station, whether to switch the station from the first AP to the second AP.
  • an AP cooperative working controller comprising: a receiving module, configured to receive a basic service set identifier BSSID application from a first access point AP; and an allocation module, configured to Applying to the first AP to allocate a BSSID, so that the first AP associates with the site associated with the request according to the BSSID, where each BSSID corresponds to one site; and the notification module is configured to notify the first AP that the The station switches from the first AP to the second AP.
  • the AP cooperative working controller further includes: a synchronization module, configured to synchronize site information and BSSID information associated with the first AP, and synchronize the site information and the BSSID information to other APs.
  • a synchronization module configured to synchronize site information and BSSID information associated with the first AP, and synchronize the site information and the BSSID information to other APs.
  • the receiving module is further configured to receive the detected signal quality of the site reported by the first AP and the second AP, respectively, and the AP cooperative working controller further includes determining And a module, configured to determine, according to the reported signal quality of the station, whether to switch the station from the first AP to the second AP.
  • the AP cooperative working controller is one of a home gateway or multiple APs.
  • the second AP acquires the associated site information and the associated BSSID information from the first AP, thereby eliminating the re-association process and the key negotiation process, thereby greatly shortening the roaming switching time. .
  • FIG. 1 is a flowchart of STA switching between APs according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a multi-AP home networking according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of multi-AP collaborative operation according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of STA switching between APs according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of STA switching between APs according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of STA switching between APs according to an embodiment of the present invention.
  • FIG. 7 is a block diagram of an AP structure in accordance with an alternative embodiment of the present invention.
  • FIG. 8 is a block diagram showing the structure of a cooperative operation controller in accordance with an alternative embodiment of the present invention.
  • FIG. 1 is a flowchart of a site switching in an AP according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:
  • Step S102 The first access point AP applies for a BSSID to the AP cooperative working controller, and associates with the site associated with the request based on the BSSID obtained by the application.
  • Step S104 The first AP receives a notification from the AP cooperative working controller to switch the station from the first AP to the second AP.
  • Step S106 The first AP transmits the associated site information and the associated BSSID information to the second AP, and switches the site to the second AP.
  • the second AP acquires the associated site information and the associated BSSID information from the first AP, thereby eliminating the re-association process and the key negotiation process, thereby greatly shortening the roaming switching time.
  • FIG. 2 is a schematic diagram of a multi-AP home networking according to an embodiment of the present invention.
  • the home networking in this embodiment includes a PC, an AP cooperative working controller, an AP, and multiple STAs accessing the AP.
  • AP1 and AP2 two APs are shown, which are AP1 and AP2 respectively.
  • all APs work in the same channel, so that each AP can detect Wi-Fi signal information of all STAs in the home network, including Wi-Fi signal strength, signal-to-noise ratio, and so on. Information can be used as a basis for subsequent roaming switching.
  • Each AP can virtualize multiple APs to work with the corresponding STAs.
  • Each virtual AP works only with one STA.
  • AP1 virtualizes BSSID1, BSSID2, and BSSID3 with STA1 and STA2, respectively.
  • the BSSID refers to the MAC address of the site, and usually one site has only one BSSID.
  • the Service Set Identifier (SSID) is the name of a wireless LAN. It can be up to 32 characters. Multiple APs can have the same SSID, but their BSSIDs are different.
  • the virtual multiple BSSIDs in this embodiment refer to that one physical site configures multiple BSSIDs, and the multiple BSSIDs have the same SSID.
  • the AP1 and the AP2 are connected to the AP cooperative working controller.
  • the AP cooperative working controller can be implemented by the home gateway or by one of the APs. In this embodiment, the home gateway is used as the AP cooperative working controller.
  • the AP cooperates with the working controller to access PC1.
  • one AP can virtualize multiple APs, that is, each SSID of one AP has multiple BSSIDs. Therefore, the BSSID can be switched between different APs to implement fast roaming of multiple AP home networks. And no need for STA cooperation.
  • FIG. 3 is a flowchart of multi-AP collaborative work according to an embodiment of the present invention. As shown in FIG. 3, the following process is included:
  • Step S301 When the AP is powered on, request the WiFi working parameters from the AP cooperative working controller, including the SSID name, the encryption mode and the key, the working channel, and the like, and request a new BSSID from the AP cooperative working controller BSSID resource pool.
  • step S302 the AP cooperates with the working controller to respond to the AP with the Wi-Fi configuration and the new BSSID.
  • Step S303 the AP broadcasts a Beacon frame with this BSSID, and waits for the STA association request.
  • Step S304 the STA requests an association from the AP and associates with the AP.
  • Step S305 after an STA associates with the AP successfully, the AP requests the new BSSIDx from the AP cooperative working controller BSSID resource pool.
  • Step S306 the AP cooperates with the work controller to allocate a new BSSIDx to the AP, and the AP broadcasts the Beacon frame with the new BSSIDx, and waits for a new STA association request.
  • step S307 the AP reports the association information of the STA to the AP cooperative working controller, including the negotiated Wi-Fi key information, the STA MAC address, and the like.
  • step S308 the AP collaborative work controller synchronizes the information to other APs that work together.
  • Step S309 all the APs working together monitor the Wi-Fi signal quality between the STA and the AP in real time.
  • step S310 all the APs working together will report the Wi-Fi signal information of all the STAs and APs in the home network detected by the AP to the AP cooperative working controller, and the information will be used as the AP cooperative working controller to determine the STA roaming handover. in accordance with.
  • Step S311 If the STA and the AP are associated or no response timeout, the AP returns the corresponding BSSID to the home gateway BSSID resource pool.
  • FIG. 4 is a schematic diagram of STA switching between APs according to an embodiment of the present invention.
  • STA1, STA2, and STA3 are associated with AP1 through BSSID1, BSSID2, and BSSID3, respectively.
  • STA4 and STA5 are associated with AP2 through BSSID4 and BSSID5, respectively.
  • STA3 roams from AP1 to AP2. After performing the roaming handover of STA3, STA1 and STA2 are associated with AP1 through BSSID1 and BSSID2, respectively. STA3, STA4, and STA5 are associated with AP2 through BSSID3, BSSID4, and BSSID5, respectively.
  • FIG. 5 is a flowchart of STA switching between APs according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:
  • Step S501 During the STA3 movement process, the AP cooperates with the work controller to synthesize the Wi-Fi signal information of STA3-AP1 and STA3-AP2, and determines that STA3 needs to roam from AP1 to AP2.
  • step S502 the AP cooperates with the working controller to notify AP1 to switch STA3 from AP1 to AP2.
  • step S503 AP1 transmits STA3 information (including MAC, negotiated key, etc.) and BSSID3 information to AP2, requesting roaming STA3 to AP2.
  • STA3 information including MAC, negotiated key, etc.
  • BSSID3 information including MAC, negotiated key, etc.
  • step S504 the AP2 responds to prepare to accept STA3.
  • Step S505 after AP2 answers, AP1 no longer responds to STA3.
  • step S506 the AP2 responds to the STA3 according to the information of the STA3 and the BSSID3.
  • the AP2 has obtained the temporary key negotiated by the STA3 and the AP1, and is used for the subsequent encryption and decryption of the packets of the AP2 and the STA3. , the temporary key has not changed,
  • step S507 STA3 does not know to roam to AP2 because there is no change in the BSSID and the temporary key.
  • the AP2 acquires the STA3 information and the BSSID3 information from the AP1, the re-association process and the key agreement process with the STA3 are omitted, thereby greatly shortening the roaming switching time.
  • FIG. 6 is a flowchart of STA switching between APs according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps:
  • Step S601 AP1 applies for an idle BSSID to the AP cooperative working controller, and broadcasts the Beacon by using the BSSID.
  • Step S602 STA3 requests association AP1;
  • Step S603 After the STA1 is successfully associated with the STA3, the associated BSSID, the associated key, and the like are synchronized to the AP cooperative working controller; the AP1 applies for the idle BSSID to the AP cooperative working controller, and waits for the new AP association;
  • Step S604 After the STA3 works normally, the location changes; the AP detects the signal strength of the STA3, and reports the AP cooperative working controller;
  • Step S605 The AP cooperative working controller determines, according to the Wi-Fi signal information of the STA3-AP, that the STA3 needs to roam from the AP1 to the AP2.
  • Step S606 AP1 transmits STA3 information (including MAC, negotiated key, etc.) and BSSID3 information to AP2, requesting roaming STA3;
  • STA3 information including MAC, negotiated key, etc.
  • BSSID3 information including MAC, negotiated key, etc.
  • Step S607 AP2 responds to AP1; AP1 stops responding to STA3, and delivers BSSID3 to AP2;
  • Step S608 AP2 acquires control of BSSID3, and responds to STA3;
  • Step S609 STA3 successfully roams to AP2.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • module may implement a combination of software and/or hardware of a predetermined function.
  • apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the AP 10 includes a coupled module 11 , a receiving module 12 , and a switching module 13 .
  • the association module 11 is configured to apply for a basic service set identifier BSSID to the AP cooperative working controller, and associate the BSSID obtained by the application with the site associated with the request;
  • the receiving module 12 is configured to receive a notification from the AP cooperative working controller to switch the station from itself to the second AP;
  • the switching module 13 is arranged to communicate the associated site information and associated BSSID information to the second AP and to switch the site to the second AP.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • an AP in another embodiment, includes a processor, a communication module, and a memory, where the processor can be a general purpose CPU or other microcontroller.
  • the communication module can be a radio frequency circuit including an antenna, and is mainly used for transmitting and receiving signals.
  • a program for realizing each functional module in the above embodiment is stored in the memory.
  • the software modules stored in the memory are executed by the processor and cooperate with the communication module to implement the functions of the respective functional modules in the above embodiments.
  • the AP cooperative working controller 20 includes a receiving module 21, an allocating module 22, and a notification module 23. among them,
  • the receiving module 21 is arranged to receive a basic service set identification BSSID request from the first access point AP.
  • the assignment module 22 is arranged to assign a BSSID to the first AP according to the application, so that the first AP associates with the site to which the request is associated based on the BSSID.
  • the notification module 23 is arranged to notify the first AP to switch the site from the first AP to the second AP.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • the AP cooperative working controller includes a processor, a communication module, and a memory, wherein the processor can be a general purpose CPU or other microcontroller.
  • the communication module can be a radio frequency circuit including an antenna, and is mainly used for transmitting and receiving signals.
  • a program for realizing each functional module in the above embodiment is stored in the memory.
  • the software modules stored in the memory are executed by the processor and cooperate with the communication module to implement the functions of the respective functional modules in the above embodiments.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be provided to store program code for executing the steps of the above-described embodiments.
  • the foregoing storage medium may include, but not limited to, a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • mobile hard disk a magnetic disk
  • magnetic disk a magnetic disk
  • optical disk a variety of media that can store program code.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

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Abstract

本发明提供了一种AP间的切换方法、AP及AP协同工作控制器，该方法包括：第一接入点AP向AP协同工作控制器申请BSSID，并基于申请得到的BSSID与请求关联的站点进行关联，其中，每个BSSID对应一个站点；所述第一AP接收来自AP协同工作控制器的将站点从第一AP切换至第二AP的通知；第一AP将关联的站点信息和关联的BSSID信息传递给第二AP，并将站点切换至第二AP。在本发明中，第二AP从第一AP获取关联的站点信息和关联的BSSID信息，因此，省去了重新与站点关联过程和密钥协商过程，从而大大缩短了漫游切换时间。

Description

AP间的切换方法、AP及AP协同工作控制器 技术领域
本发明涉及多接入点(Access Point,AP)组网领域，具体而言，涉及一种AP间的切换方法、AP及AP协同工作控制器。
背景技术
随着家庭多AP组网的发展，家庭内部多AP间快速漫游要求日益增长，而传统的802.11k/v/r和预关联漫游方式都需要站点(Station，STA)支持特定的协议，因此，无法普遍推广，另外，按照现有的协议，STA在进行AP间的切换时，需要重新与接入的AP进行关联和密钥的协商，因此，需要的切换时间较长。
发明内容
本发明实施例提供了一种AP间的切换方法、AP及AP协同工作控制器，以至少解决相关技术中STA在进行AP间的切换时，切换时间较长的问题。
根据本发明的一个方面，提供了一种接入点AP间的切换方法，包括：第一接入点AP向AP协同工作控制器申请基本服务集标识(Basic Service Set Identifier,BSSID)，并基于申请得到的所述BSSID与请求关联的站点进行关联，其中，每个BSSID对应一个站点；所述第一AP接收来自所述AP协同工作控制器的将所述站点从所述第一AP切换至第二AP的通知；所述第一AP将关联的站点信息和关联的BSSID信息传递给所述第二AP，并将所述站点切换至所述第二AP。
在一实施例中，第一AP向AP协同工作控制器申请基本服务集标识BSSID，并基于申请得到的所述BSSID与站点进行关联，包括：所述第一AP向所述AP协同工作控制器的BSSID资源池申请空闲BSSID，并以申请到的所述BSSID广播信标帧；所述第一AP响应所述站点的关联请求与所述站点进行关联。
在一实施例中，所述第一AP基于所述BSSID与站点关联之后，还包括：所述第一AP将关联的站点信息和BSSID信息同步到所述AP协同工作控制器。
在一实施例中，所述第一AP基于所述BSSID与站点关联之后，还包括：当所述第一AP与所述站点之间去关联或无应答超时，所述第一AP向所述AP协同工作控制器的BSSID资源池归还所申请的BSSID。
在一实施例中，所述第一AP接收将所述站点从所述第一AP切换至第二AP的通知之前，还包括：所述第一AP和所述第二AP分别向所述AP协同工作控制器上报所检测到的所述站点的信号质量；所述AP协同工作控制器根据上报的所述站点的信号质量判断是否需将所述站 点从所述第一AP切换到第二AP。
在一实施例中，所述第一AP将所述站点切换至所述第二AP，包括：所述第一AP向所述第二AP请求切换所述站点至所述第二AP；所述第一AP根据第二AP的切换响应终止与所述站点的关联，并将所述关联的BSSID控制权转交给所述第二AP。
在一实施例中，站点信息包括：站点的MAC地址、所述站点与所述第一AP关联所协商的密钥；BSSID信息包括BSSID名称。
在一实施例中，AP的数量为多个，所有AP工作在同一信道，所述AP协同工作控制器为家庭网关或所述多个AP中的一个。
根据本发明的另一方面，还提供了一种接入点AP，包括：关联模块，设置为向AP协同工作控制器申请基本服务集标识BSSID，并基于申请得到的所述BSSID与请求关联的站点进行关联，其中，每个BSSID对应一个站点；接收模块，设置为接收来自所述AP协同工作控制器的将所述站点从自身切换至第二AP的通知；切换模块，设置为将关联的站点信息和关联的BSSID信息传递给所述第二AP，并将所述站点切换至所述第二AP。
在一实施例中，所述AP还包括：同步模块，设置为将关联的站点信息和BSSID信息同步到所述AP协同工作控制器。
在一实施例中，所述AP还包括：上报模块，设置为向所述AP协同工作控制器上报所检测到的所述站点的信号质量。
在一实施例中，所述切换模块包括：请求单元，设置为向所述第二AP请求切换所述站点至所述第二AP；切换单元，设置为根据第二AP的切换响应终止与所述站点的关联，并将所述关联的BSSID控制权转交给所述第二AP。
在一实施例中，站点信息包括：站点的MAC地址、所述站点与所述第一AP关联所协商的密钥；BSSID信息包括BSSID名称。
根据本发明的又一方面，还提供了一种接入点AP间的切换方法，包括：AP协同工作控制器接收来自第一接入点AP的基本服务集标识BSSID申请；AP协同工作控制器根据所述申请向第一AP分配一个BSSID，所述BSSID用于关联向所述第一AP请求关联的站点，其中，每个BSSID对应一个站点；AP协同工作控制器通知所述第一AP将所述站点从所述第一AP切换至第二AP。
在一实施例中，AP协同工作控制器根据所述申请向第一AP分配一个BSSID之后，还包括：AP协同工作控制器与所述第一AP同步所关联的站点信息和BSSID信息，并将所述站点信息和BSSID信息同步至所述第二AP。
在一实施例中，AP协同工作控制器通知所述第一AP将所述站点从所述第一AP切换至第二AP之前，还包括：AP协同工作控制器接收所述第一AP和所述第二AP上报的所检测到的所述站点的信号质量；根据上报的所述站点的信号质量判断是否需将所述站点从所述第一 AP切换到第二AP。
根据本发明的又一方面，还提供了一种AP协同工作控制器，包括：接收模块，设置为接收来自第一接入点AP的基本服务集标识BSSID申请；分配模块，设置为根据所述申请向第一AP分配一个BSSID，以便所述第一AP基于所述BSSID与请求关联的站点进行关联，其中，每个BSSID对应一个站点；通知模块，设置为通知所述第一AP将所述站点从所述第一AP切换至第二AP。
在一实施例中，AP协同工作控制器还包括：同步模块，设置为与所述第一AP同步关联的站点信息和BSSID信息，并将所述站点信息和BSSID信息同步至其他AP。
在一实施例中，所述接收模块，还设置为分别接收所述第一AP和所述第二AP上报的所检测到的所述站点的信号质量；所述AP协同工作控制器还包括判断模块，设置为根据上报的所述站点的信号质量判断是否需将所述站点从所述第一AP切换到第二AP。
在一实施例中，所述AP协同工作控制器为家庭网关或多个AP中的一个。
在本发明的上述实施例中，第二AP从第一AP获取关联的站点信息和关联的BSSID信息，因此，省去了重新与站点关联过程和密钥协商过程，从而大大缩短了漫游切换时间。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的STA在AP间切换流程图；
图2是根据本发明实施例的多AP家庭组网示意图；
图3是根据本发明实施例的多AP协同工作流程图；
图4是根据本发明实施例的STA在AP间切换示意图；
图5是根据本发明实施例的STA在AP间切换流程图；
图6是根据本发明实施例的STA在AP间切换流程图；
图7是根据本发明可选实施例的AP结构框图；
图8是根据本发明可选实施例的协同工作控制器结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种接入点AP间的切换方法，图1是根据本发明实施例的站点在AP切换的流程图，如图1所示，该流程包括如下步骤：
步骤S102，第一接入点AP向AP协同工作控制器申请BSSID，并基于申请得到的BSSID与请求关联的站点进行关联。
步骤S104，第一AP接收来自AP协同工作控制器的将站点从所述第一AP切换至第二AP的通知。
步骤S106，第一AP将关联的站点信息和关联的BSSID信息传递给第二AP，并将站点切换至所述第二AP。
在上述实施例中，第二AP从第一AP获取关联的站点信息和关联的BSSID信息，因此，省去了重新与站点关联过程和密钥协商过程，从而大大缩短了漫游切换时间。
图2是根据本发明实施例的多AP家庭组网示意图，如图2所示，本实施例的家庭组网包括PC机、AP协同工作控制器、AP和多个接入AP的STA。
其中，示了两个AP，分别为AP1和AP2。在多AP家庭组网中，所有AP工作在同一信道中，这样每一个AP可以侦听到家庭组网中所有STA的Wi-Fi信号信息，包括Wi-Fi信号强度、信噪比等，这些信息可以作为后面漫游切换的依据。
每一个AP可以虚拟出多个AP来和相应的STA关联工作，每个虚拟的AP只和一个STA关联工作，例如，如图2所述，AP1虚拟出BSSID1、BSSID2和BSSID3分别与STA1、STA2和STA3关联工作，这样保证了AP上一个STA漫游时，切换BSSID不会影响该AP上的其它STA。在本实施例中，BSSID是指站点的MAC地址，通常一个站点只有一个BSSID。服务集标识(Service Set Identifier，SSID)是一个无线局域网的名称，最多32个字符，多个AP可以有相同的SSID，但它们的BSSID不同。本实施例中虚拟多个BSSID，是指一个物理站点配置多个BSSID，且这多个BSSID具有相同的SSID。
AP1和AP2接入AP协同工作控制器，AP协同工作控制器可以由家庭网关来完成，也可以由其中一个AP来完成，在本实施例中，以家庭网关作为AP协同工作控制器。AP协同工作控制器接入PC1。
在实施例的上述家庭组网中，一个AP可以虚拟多个AP，即一个AP的每一个SSID有多个BSSID，因此，可以通过不同AP间切换BSSID来实现多AP家庭组网的快速漫游，而且不需要STA配合。
图3是根据本发明实施例的多AP协同工作流程图，如图3所述，包括如下流程：
步骤S301，AP上电时，向AP协同工作控制器请求WiFi工作参数，包括SSID名称，加密方式和密钥，工作信道等，以及向AP协同工作控制器BSSID资源池请求新的BSSID。
步骤S302，AP协同工作控制器向AP回应Wi-Fi配置及新的BSSID。
步骤S303，AP以此BSSID广播信标(Beacon)帧，等待STA关联请求。
步骤S304，STA向AP请求关联，并关联到AP。
步骤S305，一个STA关联AP成功后，AP会再向AP协同工作控制器BSSID资源池请求新的BSSIDx。
步骤S306，AP协同工作控制器向AP分配新的BSSIDx，AP以此新的BSSIDx广播Beacon帧，等待新的STA关联请求。
步骤S307，AP会向AP协同工作控制器上报和STA的关联信息，包括协商的Wi-Fi密钥信息，STA MAC地址等。
步骤S308，AP协同工作控制器会将这些信息同步给协同工作的其它AP。
步骤S309，所有协同工作的AP实时监测STA与AP之间的Wi-Fi信号质量。
步骤S310，所有协同工作的AP都会向AP协同工作控制器上报该AP检测到的家庭组网中所有STA与AP的Wi-Fi信号信息，这些信息将作为AP协同工作控制器判定STA漫游切换的依据。
步骤S311，如果STA和AP去关联或者无应答超时，AP会向家庭网关BSSID资源池归还相应的BSSID。
图4是根据本发明实施例的STA在AP间切换示意图。如图4所示，在AP切换之前，STA1、STA2、STA3分别通过BSSID1、BSSID2和BSSID3与AP1相关联。STA4和STA5分别通过BSSID4和BSSID5与AP2相关联。
STA3从AP1漫游到AP2，在进行STA3的漫游切换之后，STA1和STA2分别通过BSSID1和BSSID2与AP1相关联。STA3、STA4、STA5分别通过BSSID3、BSSID4和BSSID5与AP2相关联。
图5是根据本发明实施例的STA在AP间切换流程图，如图5所示，包括如下步骤：
步骤S501，在STA3移动过程中，AP协同工作控制器综合STA3-AP1和STA3-AP2的Wi-Fi信号信息比较，判断STA3需要从AP1漫游到AP2。
步骤S502，AP协同工作控制器通知AP1，将STA3从AP1切换到AP2。
步骤S503，AP1将STA3信息(包括MAC，协商的密钥等)和BSSID3信息传递给AP2，请求漫游STA3至AP2。
步骤S504，AP2应答准备接受STA3。
步骤S505，AP2应答以后，AP1则不再响应STA3。
步骤S506，AP2根据获取STA3信息和BSSID3信息响应STA3，此时，AP2已经获取STA3与AP1协商的临时密钥，直接用于后续AP2与STA3的报文加密和解密；由于STA3与BSSID3的对应关系，临时密钥都没有变化，
步骤S507，STA3无感知漫游到AP2，因为BSSID、临时密钥都没有变化。
在本实施例的漫游切换过程中，由于AP2从AP1获取STA3信息和BSSID3信息，从而省去了与STA3重新关联过程和密钥协商过程，从而大大缩短了漫游切换时间。
图6是根据本发明实施例的STA在AP间切换流程图，如图6所示，包括如下步骤：
步骤S601：AP1向AP协同工作控制器申请空闲BSSID，并以此BSSID广播Beacon；
步骤S602：STA3请求关联AP1；
步骤S603：AP1关联STA3成功后，将关联的BSSID，关联的密钥等信息同步到AP协同工作控制器；AP1向AP协同工作控制器申请空闲BSSID,等候新的AP关联；
步骤S604：STA3正常工作后，位置发生改变；AP检测到STA3的信号强度，上报AP协同工作控制器；
步骤S605：AP协同工作控制器根据STA3-AP的Wi-Fi信号信息判断，需要将STA3从AP1漫游到AP2；
步骤S606：AP1将STA3信息(包括MAC，协商的密钥等)和BSSID3信息传递给AP2，请求漫游STA3；
步骤S607：AP2响应AP1；AP1停止响应STA3，将BSSID3交给AP2；
步骤S608：AP2获取BSSID3控制权，响应STA3；
步骤S609：STA3成功漫游到AP2上。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
在本实施例中还提供了用于实现上述实施例的AP以及AP协同工作控制器。如以下所使用的术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图7是根据本发明可选实施例的AP结构框图。如图7所示，在本实施例中，该AP 10包括相耦合的关联模块11、接收模块12和切换模块13，其中，
关联模块11设置为向AP协同工作控制器申请基本服务集标识BSSID，并基于申请得到的所述BSSID与请求关联的站点进行关联；
接收模块12设置为接收来自AP协同工作控制器的将所述站点从自身切换至第二AP的通知；
切换模块13设置为将关联的站点信息和关联的BSSID信息传递给第二AP，并将站点切换至所述第二AP。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
在另一实施例中，AP包括处理器、通信模块和存储器，其中，处理器可以为通用的CPU或其他单片机。通信模块可以为包括天线的射频电路，主要用于信号的发送和接收。存储器中存储有用于实现上述实施例中各功能模块的程序。在本实施例中，通过处理器执行存储器中存储的软件模块，并与通信模块配合以实现上述实施例中的各功能模块的功能。
图8是根据本发明可选实施例的AP协同工作控制器结构框图。如图8所示，在本实施例中，该AP协同工作控制器20包括接收模块21、分配模块22和通知模块23。其中，
接收模块21设置为接收来自第一接入点AP的基本服务集标识BSSID申请。
分配模块22设置为根据申请向第一AP分配一个BSSID，以便第一AP基于所述BSSID与请求关联的站点进行关联。
通知模块23设置为通知第一AP将站点从第一AP切换至第二AP。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
在另一实施例中，AP协同工作控制器包括处理器、通信模块和存储器，其中，处理器可以为通用的CPU或其他单片机。通信模块可以为包括天线的射频电路，主要用于信号的发送和接收。存储器中存储有用于实现上述实施例中各功能模块的程序。在本实施例中，通过处理器执行存储器中存储的软件模块，并与通信模块配合以实现上述实施例中的各功能模块的功能。
本发明的实施例还提供了一种存储介质。在本实施例中，上述存储介质可以被设置为存储用于执行上述实施例步骤的程序代码。
在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (20)

  1. 一种接入点AP间的切换方法，包括：
    第一接入点AP向AP协同工作控制器申请基本服务集标识BSSID，并基于申请得到的所述BSSID与请求关联的站点进行关联，其中，每个BSSID对应一个站点；
    所述第一AP接收来自所述AP协同工作控制器的将所述站点从所述第一AP切换至第二AP的通知；
    所述第一AP将关联的站点信息和关联的BSSID信息传递给所述第二AP，并将所述站点切换至所述第二AP。
  2. 根据权利要求1所述的切换方法，其中，第一AP向AP协同工作控制器申请基本服务集标识BSSID，并基于申请得到的所述BSSID与站点进行关联，包括：
    所述第一AP向所述AP协同工作控制器的BSSID资源池申请空闲BSSID，并以申请到的所述BSSID广播信标帧；
    所述第一AP响应所述站点的关联请求与所述站点进行关联。
  3. 根据权利要求1所述的切换方法，其中，所述第一AP基于所述BSSID与站点关联之后，还包括：
    所述第一AP将关联的站点信息和BSSID信息同步到所述AP协同工作控制器。
  4. 根据权利要求1所述的切换方法，其中，所述第一AP基于所述BSSID与站点关联之后，还包括：
    当所述第一AP与所述站点之间去关联或无应答超时，所述第一AP向所述AP协同工作控制器的BSSID资源池归还所申请的BSSID。
  5. 根据权利要求1所述的切换方法，其中，所述第一AP接收将所述站点从所述第一AP切换至第二AP的通知之前，还包括：
    所述第一AP和所述第二AP分别向所述AP协同工作控制器上报所检测到的所述站点的信号质量；
    所述AP协同工作控制器根据上报的所述站点的信号质量判断是否需将所述站点从所述第一AP切换到第二AP。
  6. 根据权利要求1所述的切换方法，其中，所述第一AP将所述站点切换至所述第二AP，包括：
    所述第一AP向所述第二AP请求切换所述站点至所述第二AP；
    所述第一AP根据第二AP的切换响应终止与所述站点的关联，并将所述关联的BSSID控制权转交给所述第二AP。
  7. 根据权利要求1所述的切换方法，其中，站点信息包括：站点的MAC地址、所述站点与所述第一AP关联所协商的密钥；BSSID信息包括BSSID名称。
  8. 根据权利要求1所述的切换方法，其中，AP的数量为多个，所有AP工作在同一信道，所述AP协同工作控制器为家庭网关或所述多个AP中的一个。
  9. 一种接入点AP，包括：
    关联模块，设置为向AP协同工作控制器申请基本服务集标识BSSID，并基于申请得到的所述BSSID与请求关联的站点进行关联，其中，每个BSSID对应一个站点；
    接收模块，设置为接收来自所述AP协同工作控制器的将所述站点从自身切换至第二AP的通知；
    切换模块，设置为将关联的站点信息和关联的BSSID信息传递给所述第二AP，并将所述站点切换至所述第二AP。
  10. 根据权利要求10所述的AP，所述AP还包括：
    同步模块，设置为将关联的站点信息和BSSID信息同步到所述AP协同工作控制器。
  11. 根据权利要求10所述的AP，所述AP还包括：
    上报模块，设置为向所述AP协同工作控制器上报所检测到的所述站点的信号质量。
  12. 根据权利要求10所述的AP，其中，所述切换模块包括：
    请求单元，设置为向所述第二AP请求切换所述站点至所述第二AP；
    切换单元，设置为根据第二AP的切换响应终止与所述站点的关联，并将所述关联的BSSID控制权转交给所述第二AP。
  13. 根据权利要求10所述的AP，其中，站点信息包括：站点的MAC地址、所述站点与所述第一AP关联所协商的密钥；BSSID信息包括BSSID名称。
  14. 一种接入点AP间的切换方法，包括：
    AP协同工作控制器接收来自第一接入点AP的基本服务集标识BSSID申请；
    AP协同工作控制器根据所述申请向第一AP分配一个BSSID，所述BSSID用于关联向所述第一AP请求关联的站点，其中，每个BSSID对应一个站点；
    AP协同工作控制器通知所述第一AP将所述站点从所述第一AP切换至第二AP。
  15. 根据权利要求15所述的方法，其中，AP协同工作控制器根据所述申请向第一AP分配一个BSSID之后，还包括：
    AP协同工作控制器与所述第一AP同步所关联的站点信息和BSSID信息，并将所述 站点信息和BSSID信息同步至所述第二AP。
  16. 根据权利要求15所述的方法，其中，AP协同工作控制器通知所述第一AP将所述站点从所述第一AP切换至第二AP之前，还包括：
    AP协同工作控制器接收所述第一AP和所述第二AP上报的所检测到的所述站点的信号质量；
    根据上报的所述站点的信号质量判断是否需将所述站点从所述第一AP切换到第二AP。
  17. 一种AP协同工作控制器，包括：
    接收模块，设置为接收来自第一接入点AP的基本服务集标识BSSID申请；
    分配模块，设置为根据所述申请向第一AP分配一个BSSID，以便所述第一AP基于所述BSSID与请求关联的站点进行关联，其中，每个BSSID对应一个站点；
    通知模块，设置为通知所述第一AP将所述站点从所述第一AP切换至第二AP。
  18. 根据权利要求18所述的AP协同工作控制器，其中，还包括：
    同步模块，设置为与所述第一AP同步关联的站点信息和BSSID信息，并将所述站点信息和BSSID信息同步至其他AP。
  19. 根据权利要求18所述的AP协同工作控制器，其中，
    所述接收模块，还设置为分别接收所述第一AP和所述第二AP上报的所检测到的所述站点的信号质量；
    所述AP协同工作控制器还包括判断模块，设置为根据上报的所述站点的信号质量判断是否需将所述站点从所述第一AP切换到第二AP。
  20. 根据权利要求18-20任一项所述的AP协同工作控制器，其中，所述AP协同工作控制器为家庭网关或多个AP中的一个。
    。
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