WO2015027419A1 - 一种构建虚拟基本服务集的方法、站点及系统 - Google Patents

一种构建虚拟基本服务集的方法、站点及系统 Download PDF

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Publication number
WO2015027419A1
WO2015027419A1 PCT/CN2013/082521 CN2013082521W WO2015027419A1 WO 2015027419 A1 WO2015027419 A1 WO 2015027419A1 CN 2013082521 W CN2013082521 W CN 2013082521W WO 2015027419 A1 WO2015027419 A1 WO 2015027419A1
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WIPO (PCT)
Prior art keywords
access point
service set
basic service
site
join
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PCT/CN2013/082521
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English (en)
French (fr)
Inventor
杨浔
赵牧
姜艳平
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/082521 priority Critical patent/WO2015027419A1/zh
Publication of WO2015027419A1 publication Critical patent/WO2015027419A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, a station, and a system for constructing a virtual basic service set. Background technique
  • wireless devices such as access points (APs) and stations (Stations) are deployed more and more, in densely deployed wireless LANs, due to continuous
  • BSS basic service sets
  • OBSS Overlapped Basic service set
  • a STA in an overlapping area of an adjacent BSS can usually receive information sent by more than one AP. Since the STA may need to reserve resources in multiple BSSs or communicate with multiple APs, when multiple APs want to interact with the STA, information interaction may fail due to time conflicts.
  • the embodiment of the invention provides a method and a system for constructing a virtual basic service set, so as to solve the problem that information interaction fails due to time conflict when the STA communicates with multiple APs.
  • a first aspect of the embodiments of the present invention provides a method for constructing a virtual basic service set, which may include: establishing a virtual basic service set by a site;
  • the join request includes a sequence number, where the sequence number is used to indicate a communication sequence of the access point that receives the join request and the site, and the access point includes at least a first access point and a The second access point, the join request includes at least a first join request and a second join request.
  • the sending, by the station, a join request to an access point, requesting the access point to join the virtual basic service set includes: Sending, by the station, a first join request to the first access point, requesting the first access point to join the virtual basic service set;
  • the site joins the access point to the virtual basic service set, including:
  • a second possible implementation if the first access point and the second access point are added to the virtual basic a service set, when the station communicates with the first access point and the second access point, the station is configured according to a sequence number of the first access point and a second access point The serial number completes communication with the first access point and the second access point in sequence.
  • the station sends a join request to an access point, requesting the access point to join the Before describing the virtual basic service set, it also includes:
  • the station scans the channel to obtain access point information located in the working area of the station.
  • the joining request is included in the site and sent to the access point
  • the response message is included in the association response frame returned by the access point
  • the join request is included in a probe request frame sent by the site to the access point
  • the response The message is included in the probe response frame returned by the access point.
  • the joining request further includes the virtual basic service set The virtual basic service set identifier and the duration of time that the virtual basic service set is expected to exist, the response message including a duration of existence of the virtual basic service set determined by the access point.
  • a site which may include:
  • a sending unit configured to send a join request to the access point, requesting the access point to join the virtual basic service set
  • a joining unit configured to receive a response message returned by the access point, if the access point agrees to the joining request, the site joins the access point to the virtual basic service set;
  • the join request includes a sequence number, where the sequence number is used to indicate a communication sequence of the access point that receives the join request and the site, and the access point includes at least a first access point and a The second access point, the join request includes at least a first join request and a second join request.
  • the sending unit is specifically configured to: send a first join request to a first access point, and request the first access point to join the virtual basic service set, And sending a second join request to the second access point, requesting the second access point to join the virtual basic service set;
  • the adding unit is specifically configured to:
  • the site further includes:
  • a sorting unit configured to configure a serial number for the access point, and reclaim the serial number when the access point exits the virtual basic service set.
  • the site further includes:
  • the scanning unit is configured to scan a channel to obtain access point information located in a working area of the site.
  • the joining request is included in the site and sent to the access point
  • the response message is included in the association response frame returned by the access point; or
  • the join request is included in a probe request frame sent by the station to the access point, and the response message is included in a probe response frame returned by the access point.
  • the joining request further includes the virtual basic service set The virtual basic service set identifier and the duration of time that the virtual basic service set is expected to exist, the response message including a duration of existence of the virtual basic service set determined by the access point.
  • a third aspect of the embodiments of the present invention provides a computer program product, which may include a computer readable medium, the computer readable medium comprising a set of program code for performing the first aspect or the first aspect of the embodiment of the present invention.
  • a computer program product may include a computer readable medium, the computer readable medium comprising a set of program code for performing the first aspect or the first aspect of the embodiment of the present invention.
  • a fourth aspect of the embodiments of the present invention provides a system, which may include:
  • a station according to any one of the second or second aspect of the present invention; at least two access points, wherein a first one of the at least two access points is configured to receive the The first join request sent by the station sends a first response message to the site, where the first join request includes a sequence number indicating a communication sequence between the first access point and the site, and the first response The message is used to indicate whether the first access point agrees with the first join request;
  • the second access point of the at least two access points is configured to receive a second join request sent by the station, and send a second response message to the site, where the second join request includes the indication a sequence number of the second access point in communication with the station, the second response message being used to indicate whether the second access point agrees with the second join request.
  • a site located in the overlapping area of the adjacent BSS establishes a virtual BSS with multiple access points, so that in the OBSS system, multiple access points wish to simultaneously perform with the sites located in the overlapping area.
  • the problem of communication failure due to time conflict improves the stability and efficiency of the site communication, which is beneficial to the normal operation of the entire system.
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for constructing a virtual basic service set according to the present invention
  • FIG. 2 is a schematic flowchart of a second embodiment of a method for constructing a virtual basic service set according to the present invention
  • FIG. 4 is a schematic diagram of a composition of a first embodiment of a station according to the present invention
  • Figure 5 is a schematic diagram showing the composition of a second embodiment of the station of the present invention.
  • Figure 6 is a schematic diagram showing the composition of a third embodiment of the station of the present invention.
  • Figure 7 is a schematic diagram showing the composition of a fourth embodiment of the station of the present invention.
  • FIG. 8 is a schematic diagram of the composition of a system according to an embodiment of the present invention. detailed description
  • FIG. 1 it is a schematic flowchart of a first embodiment of a method for constructing a virtual basic service set according to the present invention.
  • the method includes the following steps:
  • the site establishes a virtual basic service set
  • the site may set an identifier of the virtual basic service set, that is, a virtual BSSID.
  • the station may broadcast a message or separately send a message to a specific access point to invite an access point in the work area of the site to join the virtual basic service set.
  • the station sends a join request to an access point, and requests the access point to join the virtual basic service set.
  • the access point is located in a working area of the station, and the station may learn the information of the access point by using other methods such as scanning a channel.
  • the join request may be included in an association request frame sent by the site to the access point, or included in a probe request frame sent by the site to the access point, or may use a new control frame and Management frame carrying, can also be carried by existing control frames, management frames or data frames.
  • the join request includes a sequence number, where the sequence number is used to indicate a communication sequence of the access point that receives the join request and the site, and the access point includes at least a first access point and a second access
  • the join request includes at least a first join request and a second join request.
  • the number of access points in the working area of the site exceeds two, the number of the join requests also increases, and the number of join requests may correspond to the number of access points.
  • Each of the join requests may include a different serial number.
  • the first join request is a join request sent by the site to the first access point, and the first join request may include but is not limited to A sequence number indicating the order in which the first access point communicates with the station.
  • the second join request is a join request sent by the site to the second access point, and the second join request may include, but is not limited to, a sequence indicating a communication sequence between the second access point and the site. number. If the sequence corresponding to the sequence number in the first join request is better than the sequence corresponding to the sequence number in the second join request, the first access point and the second access point sequentially return a response message to the site. When there is still a third access point, the station may further send a third join request carrying a sequence number to the third access point to invite the third access point to join the virtual basic service set.
  • the join request may further include a virtual basic service set identifier of the virtual basic service set and a duration in which the virtual basic service set is expected to exist.
  • the virtual basic service set identifier is used as the identification information of the virtual basic service set. It is expected that the duration of the existence of the virtual basic service set may be temporarily existed or existed for a long time according to actual needs.
  • the access point After receiving the join request of the site, the access point will return a response message indicating whether the access point agrees to the join request, that is, indicating whether the access point agrees to join the
  • the virtual basic service set built by the site may be an access point that is associated with the authentication of the site, or an access point that is not associated with the authentication, and only needs the site. You can scan to the access point.
  • the response message is used to indicate whether the access point agrees to join the virtual basic service set. If agreed, the site joins the access point to the virtual basic service set, and if not, does not join the access point to the virtual basic service set, and the site may attempt to request scanning. Other access points are added.
  • the response message may further include a duration of existence of the virtual basic service set determined by the access point.
  • the response message may be included in the association response frame returned by the access point; or included in the probe response frame returned by the access point, or may be carried by using a new control frame and a management frame, and may also be Carry with existing control frames, management frames or data frames.
  • the access point that joins the virtual basic service set constructed by the site may be an access point that is associated with the authentication of the site, or an access point that is not associated with the authentication, and only needs to be described.
  • the site can scan to the access point.
  • the access point when the site and any access point construct a virtual basic service set or invite any access point to join the virtual basic service set, the access point is assigned a corresponding serial number for use in multiple
  • the order in which the respective access points communicate with the site is indicated. For example, if the sequence number of the first access point is 1 and the sequence number of the second access point is 2, when the two requests to communicate with the site at the same time, the first access point communicates with the site in sequence. The second access point then communicates with the site.
  • a station located in an overlapping area of an adjacent BSS establishes a virtual BSS with a plurality of access points, thereby avoiding that in the OBSS system, multiple access points wish to be simultaneously located in the overlapping area.
  • the station communicates the communication failure occurs due to time conflict, thereby improving the stability and efficiency of the site communication, which is beneficial to the normal operation of the entire system.
  • the allocated multiple serial numbers may be recovered and redistributed according to actual conditions, according to factors such as load and power of the access point. Make changes directly. Of course, the serial number may not be recovered or changed. Only a specific access point may be designated as the primary access point (Primary AP), and then the original access point preferentially returns a response message by default. Communicate with the original access point. When the access point that has been added to the virtual BSS exits the virtual BSS, the serial number can also be reclaimed for configuration to other access points. In addition, in the embodiment, only the process of the two access points and the sites forming the virtual BSS is described.
  • the process of establishing the virtual BSS and inviting the access point to join the virtual BSS is similar. The details are not described here.
  • the method described in this embodiment may also be used to establish a virtual BSS and invite the access point to join.
  • the second access point can immediately invite the second access point to join. If there is no access point currently in the working area of the site, the site can establish a virtual BSS or wait for the access point to appear.
  • the virtual BSS is established, and the present invention does not impose any limitation.
  • FIG. 2 it is a schematic flowchart of a second embodiment of a method for constructing a virtual basic service set according to the present invention.
  • the method includes the following steps:
  • the site scans the channel, and obtains access point information located in the working area of the site.
  • the scanning here may be initiated by the station actively, or the station may receive the access point to passively start scanning the channel.
  • Access points located within the working area of the station can operate on one channel or on different channels.
  • the association may or may not be associated with the site, and the embodiment does not impose any limitation.
  • the site establishes a virtual basic service set.
  • S203 The station sends a join request to the access point, requesting the access point to join the virtual basic service set.
  • S204 The station receives a response message returned by the access point, and if the access point agrees to the join request, the site joins the access point to the virtual basic service set.
  • the access point includes at least a first access point and a second access point
  • the join request includes at least a first join request and a second join request.
  • the response message also includes at least a first response. Message and second reply message.
  • the site Since the site is assigned a virtual BSS when the virtual BSS is established and the access point is added to the virtual BSS, the corresponding access number is assigned to the different access points. Therefore, when the site is located in the overlapping area of the OBSS system, the site requests and at least two or more When the access point communicates, the station can sort the communication order of the access point according to the indication of the serial number, and complete the communication process with each access point in sequence, without conflict, thereby improving the OBSS system. The stability and efficiency of communication between a single site and multiple access points.
  • the station may confirm the situation and notify the site after the first access point and the second access point The site then completes communication with the first access point.
  • FIG. 3 it is a schematic flowchart of a third embodiment of a method for constructing a virtual basic service set according to the present invention.
  • the method includes the following steps:
  • the site scans a channel, and obtains access point information located in a working area of the site.
  • the scan here can be initiated by the site, or it can be passively opened by the site receiving the access point. Start scanning the channel.
  • Access points located within the working area of the station can operate on one channel or on different channels. The association may or may not be associated with the site, and the embodiment does not impose any limitation.
  • S302 Send a first join request to the first access point, and request the first access point to join the virtual basic service set.
  • S303 The station receives a first response message returned by the first access point.
  • step S304 Determine, according to the first response message, whether the first access point agrees with the first join request. If yes, go to step S305, otherwise go to step S306.
  • S305 The station joins the first access point to the virtual basic service set.
  • the first access point is not added to the virtual basic service set.
  • the station sends a second join request to the second access point, requesting the second access point to join the virtual basic service set.
  • the other access point may be the second access point, and if the site and the second access point successfully construct a virtual BSS, the second configuration request does not need to be sent again.
  • the second access point requests the second access point to join the virtual BSS.
  • S308 The station receives a second response message returned by the second access point.
  • step S310 Determine, according to the second response message, whether the first access point agrees with the second join request, and if yes, execute step S310; otherwise, perform step S311.
  • the station joins the second access point to the virtual basic service set.
  • the second access point is not added to the virtual basic service set.
  • the first access point and the second access point sequentially return a response message to the station in the order corresponding to the sequence number, thereby completing the sequential communication.
  • the site sends the first join request and sends the second join request without strict chronological order.
  • the two can be performed simultaneously or separately, and only need different serial numbers in different join requests. .
  • receiving the first response message and receiving the second response message are rooted According to these messages, the corresponding access point is invited to join the virtual basic service set, which can be performed simultaneously or in a time-sharing manner, and the present invention does not impose any limitation.
  • a method for constructing a virtual BSS and an inviting access point to join an established BSS is provided.
  • the manner in which the station and the access point complete information interaction may utilize an existing association request frame.
  • the probe request frame, the association response frame, the probe response frame, the control frame, the management frame, or the data frame are completed.
  • a dedicated new control frame or management frame may also be configured to complete.
  • FIG. 4 is a schematic diagram of the composition of the first embodiment of the station of the present invention.
  • the station includes: an establishing unit 100, a sending unit 200, and a joining unit 300.
  • the establishing unit 100 is configured to establish a virtual basic service set
  • the sending unit 200 is configured to send a join request to an access point, requesting the access point to join the virtual basic service set;
  • the joining unit 300 is configured to receive a response message returned by the access point, and if the access point agrees with the joining request, the site joins the access point to the virtual basic service set;
  • the join request includes a sequence number, where the sequence number is used to indicate a communication sequence of the access point that receives the join request and the site, and the access point includes at least a first access point and a The second access point, the join request includes at least a first join request and a second join request.
  • the join request further includes a virtual basic service set identifier of the virtual basic service set and a duration of time that the virtual basic service set is expected to exist, the response message including the virtual basic determined by the access point The length of time a service set exists.
  • the join request is included in an association request frame sent by the station to the access point, where the response message is included in an association response frame returned by the access point;
  • the join request is included in a probe request frame sent by the station to the access point, and the response message is included in a probe response frame returned by the access point.
  • the sending unit 200 is specifically configured to:
  • the adding unit 300 is specifically configured to:
  • FIG. 5 is a schematic diagram of the composition of the second embodiment of the station of the present invention.
  • the station includes: an establishing unit 100, a sending unit 200, a joining unit 300, and a sorting unit 400.
  • the establishing unit 100 is configured to establish a virtual basic service set
  • the sending unit 200 is configured to send a join request to an access point, requesting the access point to join the virtual basic service set;
  • the joining unit 300 is configured to receive a response message returned by the access point, and if the access point agrees with the joining request, the site joins the access point to the virtual basic service set;
  • the join request includes a sequence number, where the sequence number is used to indicate a communication sequence of the access point that receives the join request and the site, and the access point includes at least a first access point and a The second access point, the join request includes at least a first join request and a second join request.
  • the sorting unit 400 is configured to: when both the first access point and the second access point join the virtual basic service set, at the same time, the first access point and the second access point When communicating with the station, indicating that the station completes in sequence with the first access point and the second according to the sequence number of the first access point and the sequence number of the second access point Communication at the access point.
  • FIG. 6 is a schematic diagram of the composition of the third embodiment of the station of the present invention.
  • the station includes: an establishing unit 100, a sending unit 200, a joining unit 300, a sorting unit 400, and a scanning unit 500.
  • the establishing unit 100 is configured to establish a virtual basic service set
  • the sending unit 200 is configured to send a join request to an access point, requesting the access point to join the virtual basic service set;
  • the joining unit 300 is configured to receive a response message returned by the access point, and if the access point agrees with the joining request, the site joins the access point to the virtual basic service set;
  • the join request includes a sequence number, where the sequence number is used to indicate a communication sequence of the access point that receives the join request and the site, and the access point includes at least a first access point and a The second access point, the join request includes at least a first join request and a second join request.
  • the sorting unit 400 is configured to configure a serial number for the access point, and exit at the access point
  • the serial number is recovered.
  • the access point is reconfigured with a new serial number.
  • the original serial number may be recovered.
  • the original serial number may not be recovered, and the message carrying the new serial number may be directly sent to the access point, and the old serial number may be overwritten by the new serial number. In this way, the old serial number can be considered as automatic recycling.
  • the scanning unit 500 is configured to scan a channel to obtain access point information located in a working area of the station.
  • the establishing unit and/or the joining unit in the above site embodiment may be separately set in hardware form independently of the processor of the station, and may be in the form of a microprocessor; or may be embedded in hardware.
  • the processor of the site may also be stored in the memory of the site in the form of software, so that the processor of the site invokes the operation corresponding to the above building unit or the joining unit.
  • the establishing unit 100 and/or the joining unit 300 may be a processor of the site, and the functions of the transmitting unit 200 may be embedded in the processing.
  • the sorting unit 400 shown in FIG. 5 is the same as the setting unit 100 or the joining unit 300, and may be separately set independently of the processor, may be embedded in the processor, or may be stored in the memory in the form of software, and is called by the processor. Achieve its function.
  • the scanning unit 500 shown in FIG. 6 is similar to the establishing unit 100 or the joining unit 300, and may be separately set independently of the processor, may be embedded in the processor, or may be stored in the memory in the form of software, and is implemented by the processor. Its function.
  • the sending unit 200 can be used as an interface circuit of the station, and can be integrated with the establishing unit 100, the adding unit 300, the sorting unit 400, or the scanning unit 500, or can be independently set.
  • the embodiment of the invention is not limited in any way.
  • the above processor may be a central processing unit (CPU), a microprocessor, a microcontroller, or the like.
  • FIG. 7 is a schematic diagram of the composition of a fourth embodiment of the station of the present invention.
  • the station includes: an interface circuit 110, a memory 120, and a processor 130 connected to the interface circuit 110 and the memory 120.
  • the memory 120 is used to store a set of program codes
  • the processor 130 is configured to call the program code stored in the memory 120 to perform the operations described in any one of the first to third embodiments of the method for constructing the virtual basic service set of the present invention.
  • FIG. 8 which is a schematic structural diagram of a system according to an embodiment of the present invention.
  • the system includes: a station STA, as described in any one of the first to third embodiments of the site of the present invention, and a first access point API and a second access point AP2.
  • the first access point API is configured to receive a first join request sent by the station STA, and send a first response message to the station STA, where the first join request includes indicating the first access point a sequence number of the communication sequence between the API and the STA, the first response message is used to indicate whether the first access point API agrees to the first join request;
  • the second access point AP2 is configured to receive a second join request sent by the station STA, and send a second response message to the site, where the second join request includes indicating the second access point AP2 a sequence number of the communication sequence with the station STA, the second response message is used to indicate whether the second access point AP2 agrees to the second join request because the STA is located at the BSS1 corresponding to the API and the BSS2 corresponding to the AP2
  • the STA establishes a virtual BSS with the API and AP2, and assigns a corresponding serial number to the API and AP2 respectively, so that the STA can request both the API and the AP2.
  • the API and AP2 can return the response message in order according to the assigned sequence number, and complete communication with the STA in turn, thereby ensuring the normal completion of communication between a single STA and multiple APs in the OBSS system, improving the fault tolerance and stability of the entire system. Sex.
  • the present invention has the following advantages:
  • a site located in the overlapping area of the adjacent BSS establishes a virtual BSS with multiple access points, so that in the OBSS system, multiple access points wish to simultaneously perform with the sites located in the overlapping area.
  • the problem of communication failure due to time conflict improves the stability and efficiency of the site communication, which is beneficial to the normal operation of the entire system.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the steps of the foregoing method embodiments are included; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明实施例公开了一种构建虚拟BSS的方法,包括:站点建立虚拟基本服务集;所述站点发送加入请求至接入点,请求所述接入点加入所述虚拟基本服务集;接收所述接入点返回的应答消息,若所述接入点同意所述加入请求,则所述站点将所述接入点加入所述虚拟基本服务集;其中,所述加入请求中包括一个序列号,所述序列号用于指示接收所述加入请求的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第二接入点,所述加入请求至少包括第一加入请求和第二加入请求。本发明实施例还公开了一种站点及系统。采用本发明,可解决STA与多个AP通信时,因时间冲突导致信息交互失败的问题。

Description

一种构建虚拟基本 J¾艮务集的方法、 站点及系统
技术领域
本发明涉及通信技术领域, 尤其涉及一种构建虚拟基本服务集的方法、站 点及系统。 背景技术
随着无线通信技术的迅猛发展, 无线设备如接入点 (Access Point, 筒称 AP )和站点 (Station, 筒称 STA ) 的部署也越来越多, 在密集部署的无线局 域网中,由于连续布网的需要,相邻的基本服务集( Basic service set,筒称 BSS ) 之间可能会存在信号交叠的区域。 由于频谱资源是有限的, 这些相邻的 BSS 有可能工作在相同的信道上, 从而导致相邻的 BSS 形成交叠基本服务集 ( Overlapped Basic service set,筒称 OBSS )。处于相邻的 BSS交叠区域的 STA, 通常可以接收到多于一个 AP发送的信息。 由于 STA有可能需要在多个 BSS 内预留资源, 或者与多个 AP进行通信, 因此在多个 AP希望与该 STA进行信 息交互时, 可能会由于时间沖突造成信息交互失败。 发明内容
本发明实施例提供了一种构建虚拟基本服务集的方法站点及系统,以解决 STA与多个 AP通信时, 因时间沖突导致信息交互失败的问题。
本发明实施例第一方面提供了一种构建虚拟基本服务集的方法, 可包括: 站点建立虚拟基本服务集;
所述站点发送加入请求至接入点,请求所述接入点加入所述虚拟基本服务 集;
所述站点接收所述接入点返回的应答消息,若所述接入点同意所述加入请 求, 则所述站点将所述接入点加入所述虚拟基本服务集;
其中, 所述加入请求中包括一个序列号, 所述序列号用于指示接收所述加 入请求的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第 二接入点, 所述加入请求至少包括第一加入请求和第二加入请求。
在第一方面的第一种可能的实现方式中, 所述站点发送加入请求至接入 点, 请求所述接入点加入所述虚拟基本服务集, 包括: 所述站点发送第一加入请求至第一接入点,请求所述第一接入点加入所述 虚拟基本服务集;
所述站点发送第二加入请求至第二接入点,请求所述第二接入点加入所述 虚拟基本服务集;
所述站点接收所述接入点返回的应答消息,若所述接入点同意所述加入请 求, 则所述站点将所述接入点加入所述虚拟基本服务集, 包括:
所述站点接收所述第一接入点返回的第一应答消息,根据所述第一应答消 息判断所述第一接入点是否同意所述第一加入请求, 若是, 则所述站点将所述 第一接入点加入所述虚拟基本服务集;
所述站点接收所述第二接入点返回的第二应答消息,根据所述第二应答消 息判断所述第一接入点是否同意所述第二加入请求, 若是, 则所述站点将所述 第二接入点加入所述虚拟基本服务集。
结合第一方面或结合第一方面的第一种可能的实现方式,在第二种可能的 实现方式中, 若所述第一接入点和所述第二接入点均加入所述虚拟基本服务 集, 则在所述站点与所述第一接入点和所述第二接入点通信时, 所述站点根据 所述第一接入点的序列号和所述第二接入点的序列号,按顺序完成与所述第一 接入点和所述第二接入点的通信。
结合第一方面或结合第一方面的第一或第二种可能的实现方式,在第三种 可能的实现方式中, 所述站点发送加入请求至接入点,请求所述接入点加入所 述虚拟基本服务集之前, 还包括:
所述站点扫描信道, 获取位于所述站点工作区域内的接入点信息。
结合第一方面或结合第一方面的第一或第二或第三种可能的实现方式,在 第四种可能的实现方式中,所述加入请求包含于所述站点发送给所述接入点的 关联请求帧中, 所述应答消息包含于所述接入点返回的关联响应帧中; 或 所述加入请求包含于所述站点发送给所述接入点的探测请求帧中 ,所述应 答消息包含于所述接入点返回的探测响应帧中。
结合第一方面或结合第一方面的第一或第二或第三或第四种可能的实现 方式,在第五种可能的实现方式中, 所述加入请求还包括所述虚拟基本服务集 的虚拟基本服务集标识符和期望所述虚拟基本服务集存在的时长,所述应答消 息包括所述接入点确定的所述虚拟基本服务集存在的时长。 本发明实施例第二方面提供了一种站点, 可包括:
建立单元, 用于建立虚拟基本服务集;
发送单元, 用于发送加入请求至接入点,请求所述接入点加入所述虚拟基 本服务集;
加入单元, 用于接收所述接入点返回的应答消息, 若所述接入点同意所述 加入请求, 则所述站点将所述接入点加入所述虚拟基本服务集;
其中, 所述加入请求中包括一个序列号, 所述序列号用于指示接收所述加 入请求的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第 二接入点, 所述加入请求至少包括第一加入请求和第二加入请求。
在第二方面的第一种可能的实现方式中, 所述发送单元具体用于: 发送第一加入请求至第一接入点,请求所述第一接入点加入所述虚拟基本 服务集, 以及发送第二加入请求至第二接入点,请求所述第二接入点加入所述 虚拟基本服务集;
所述加入单元具体用于:
接收所述第一接入点返回的第一应答消息,根据所述第一应答消息判断所 述第一接入点是否同意所述第一加入请求, 若是, 则所述站点将所述第一接入 点加入所述虚拟基本服务集;
接收所述第二接入点返回的第二应答消息,根据所述第二应答消息判断所 述第一接入点是否同意所述第二加入请求, 若是, 则所述站点将所述第二接入 点加入所述虚拟基本服务集。
结合第二方面或集合第二方面的第一种可能的实现方式,在第二种可能的 实现方式中, 所述站点还包括:
排序单元, 用于为所述接入点配置序列号, 以及在所述接入点退出所述虚 拟基本服务集时, 回收所述序列号。
结合第二方面或结合第二方面的第一或第二种可能的实现方式,在第三种 可能的实现方式中, 所述站点还包括:
扫描单元, 用于扫描信道, 获取位于所述站点工作区域内的接入点信息。 结合第二方面或结合第二方面的第一或第二或第三种可能的实现方式,在 第四种可能的实现方式中,所述加入请求包含于所述站点发送给所述接入点的 关联请求帧中, 所述应答消息包含于所述接入点返回的关联响应帧中; 或 所述加入请求包含于所述站点发送给所述接入点的探测请求帧中,所述应 答消息包含于所述接入点返回的探测响应帧中。
结合第二方面或结合第二方面的第一或第二或第三或第四种可能的实现 方式,在第五种可能的实现方式中, 所述加入请求还包括所述虚拟基本服务集 的虚拟基本服务集标识符和期望所述虚拟基本服务集存在的时长,所述应答消 息包括所述接入点确定的所述虚拟基本服务集存在的时长。
本发明实施例第三方面提供了一种计算机程序产品,可包括计算机可读介 质, 所述计算机可读介质包括一组程序代码, 用于执行如本发明实施例第一方 面或第一方面任一实现方式所述的方法。
本发明实施例第四方面提供了一种系统, 可包括:
如本发明实施例第二方面或第二方面任一实现方式所述的站点; 至少两个接入点,其中, 所述至少两个接入点中的第一接入点用于接收所 述站点发送的第一加入请求, 发送第一应答消息给所述站点, 其中, 所述第一 加入请求包括指示所述第一接入点与所述站点通信顺序的序列号,所述第一应 答消息用于指示所述第一接入点是否同意所述第一加入请求;
所述至少两个接入点中的第二接入点用于接收所述站点发送的第二加入 请求, 发送第二应答消息给所述站点, 其中, 所述第二加入请求包括指示所述 第二接入点与所述站点通信顺序的序列号,所述第二应答消息用于指示所述第 二接入点是否同意所述第二加入请求。
实施本发明实施例, 具有如下有益效果:
在 OBSS系统中, 位于相邻 BSS交叠区域的站点, 通过与多个接入点建 立虚拟 BSS,这样就可以避免在 OBSS系统中, 多个接入点希望同时与位于交 叠区域的站点进行通信时, 因为时间沖突导致通信失败的问题,从而提高了站 点通信的稳定性和效率, 利于整个系统的正常运转。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施 例中所需要使用的附图作筒单地介绍,显而易见地, 下面描述中的附图仅仅是 本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。 图 1 为本发明构建虚拟基本服务集的方法的第一实施例的流程示意图; 图 2 为本发明构建虚拟基本服务集的方法的第二实施例的流程示意图; 图 3为本发明构建虚拟基本服务集的方法的第三实施例的流程示意图; 图 4为本发明站点的第一实施例的组成示意图;
图 5为本发明站点的第二实施例的组成示意图;
图 6为本发明站点的第三实施例的组成示意图;
图 7为本发明站点的第四实施例的组成示意图;
图 8为本发明实施例系统的组成示意图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
请参照图 1 , 为本发明构建虚拟基本服务集的方法的第一实施例的流程示 意图, 在本实施例中, 所述方法包括以下步骤:
5101 , 站点建立虚拟基本服务集;
其中,所述站点可以设定所述虚拟基本服务集的标识即虚拟 BSSID。 当所 述虚拟基本服务集建立之后,所述站点便可以广播消息或针对具体的接入点单 独发送消息来邀请所述站点工作区域内的接入点加入所述虚拟基本服务集。
5102,所述站点发送加入请求至接入点,请求所述接入点加入所述虚拟基 本服务集。
其中, 所述接入点位于所述站点的工作区域内, 所述站点可以通过扫描信 道等其他方式获知所述接入点的信息。所述加入请求可以包含于所述站点发送 给所述接入点的关联请求帧中,或包含于所述站点发送给所述接入点的探测请 求帧中, 也可以利用新的控制帧和管理帧携带, 还可以利用已存在的控制帧、 管理帧或数据帧携带。
所述加入请求中包括一个序列号,所述序列号用于指示接收所述加入请求 的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第二接入 点, 所述加入请求至少包括第一加入请求和第二加入请求。 具体地, 当所述站点工作区域内的接入点数量超过 2个时, 所述加入请求 的数量也随之增加,加入请求的数量可以与接入点的数量——对应。每条加入 请求内都可以包括一个不同的序列号, 例如, 所述第一加入请求即所述站点发 送给所述第一接入点的加入请求,所述第一加入请求可以包括但不限于指示所 述第一接入点与所述站点通信顺序的序列号。所述第二加入请求即所述站点发 送给所述第二接入点的加入请求,所述第二加入请求可以包括但不限于指示所 述第二接入点与所述站点通信顺序的序列号。若所述第一加入请求中的序列号 对应的顺序优于第二加入请求中的序列号对应的顺序,则第一接入点和第二接 入点依次返回应答消息给所述站点。 当还存在第三接入点时, 所述站点还可以 发送携带序列号的第三加入请求给所述第三接入点以邀请所述第三接入点加 入所述虚拟基本服务集。
优选地,所述加入请求还可以包括所述虚拟基本服务集的虚拟基本服务集 标识符和期望所述虚拟基本服务集存在的时长。所述虚拟基本服务集标识符用 于作为所述虚拟基本服务集的标识信息,期望所述虚拟基本服务集存在的时长 可以根据实际需要设定为临时存在或长期存在。
在接收到所述站点的加入请求之后, 所述接入点将返回一个应答消息,用 于表明所述接入点是否同意所述加入请求即用于表明所述接入点是否同意加 入所述站点构建的虚拟基本服务集中。 需要说明的是, 与所述站点构建虚拟基 本服务集的接入点既可以是与所述站点进行认证关联的接入点,也可以是没有 进行认证关联的接入点, 只需要所述站点可以扫描到该接入点即可。
S103 ,接收所述接入点返回的应答消息,若所述接入点同意所述加入请求, 则所述站点将所述接入点加入所述虚拟基本服务集。
其中,所述应答消息用于表明所述接入点是否同意加入所述虚拟基本服务 集。 若同意, 则所述站点将所述接入点加入所述虚拟基本服务集, 若不同意, 则不将所述接入点加入所述虚拟基本服务集,所述站点可以试图请求扫描到的 其他接入点加入。
优选地,所述应答消息还可以包括所述接入点确定的所述虚拟基本服务集 存在的时长。
所述应答消息可以包含于所述接入点返回的关联响应帧中;或包含于所述 接入点返回的探测响应帧中,也可以利用新的控制帧和管理帧携带,还可以利 用已存在的控制帧、 管理帧或数据帧携带。
需要说明的是,加入所述站点构建的虚拟基本服务集的接入点既可以是与 所述站点进行认证关联的接入点,也可以是没有进行认证关联的接入点, 只需 要所述站点可以扫描到该接入点即可。
在本实施例中,所述站点与任意接入点构建虚拟基本服务集或邀请任意接 入点加入虚拟基本服务集的时候,都将为接入点分配对应的序列号, 以用于在 多个接入点同时请求与所述站点通信时,指示各个接入点与所述站点通信的顺 序。 例如, 第一接入点的序列号为 1 , 第二接入点的序列号为 2, 则两者同时 请求与所述站点通信时,则按照顺序依次由第一接入点与站点通信后再由第二 接入点与站点通信。 这样, 在 OBSS系统中, 位于相邻 BSS交叠区域的站点, 通过与多个接入点建立虚拟 BSS, 这样就可以避免在 OBSS系统中, 多个接入 点希望同时与位于交叠区域的站点进行通信时,因为时间沖突导致通信失败的 问题, 从而提高了站点通信的稳定性和效率, 利于整个系统的正常运转。
需要说明的是, 所述序列号在配置并发送给接入点之后,还可以根据接入 点的负载、功率等因素考虑,根据实际情况对已分配的多个序列号进行回收和 重分配或者直接进行变更。 当然, 也可以不对序列号进行回收或变更, 只需要 指定一个具体的接入点作为原始接入点 ( Primary AP ) 即可, 后续默认由该原 始接入点优先返回应答消息, 所述站点优先和该原始接入点进行通信。在已加 入虚拟 BSS的接入点退出所述虚拟 BSS时, 同样可以对序列号进行回收以便 于配置给其他接入点使用。此外,在本实施例中仅描述了两个接入点与站点组 成虚拟 BSS的流程, 当存在 3个以上的接入点时, 虚拟 BSS的建立及邀请接 入点加入虚拟 BSS 的流程类似, 此处不再赘述, 当然, 若所述站点的工作区 域内当前只存在一个接入点,同样可以采用本实施例所述的方法先建立一个虚 拟 BSS并邀请该接入点加入, 这样在出现第二个接入点时, 即可以马上邀请 第二个接入点加入, 若所述站点的工作区域内当前不存在接入点, 所述站点可 以建立虚拟 BSS或者等待接入点出现后再建立虚拟 BSS, 本发明不作任何限 制。
请参照图 2, 为本发明构建虚拟基本服务集的方法的第二实施例的流程示 意图, 在本实施例中, 所述方法包括以下步骤:
S201 , 站点扫描信道, 获取位于所述站点工作区域内的接入点信息。 此处的扫描可以由站点主动发起,也可以由站点接收接入点的要求被动开 始扫描信道。位于所述站点工作区域内的接入点可以工作在一个信道上,也可 以工作在不同的信道上。 可以与所述站点关联, 也可以不进行关联, 本实施例 不作任何限制。
S202, 所述站点建立虚拟基本服务集。
5203 ,所述站点发送加入请求至接入点,请求所述接入点加入所述虚拟基 本服务集。
5204,所述站点接收所述接入点返回的应答消息,若所述接入点同意所述 加入请求, 则所述站点将所述接入点加入所述虚拟基本服务集。
其中, 所述接入点至少包括第一接入点和第二接入点, 所述加入请求至少 包括第一加入请求和第二加入请求,相应地, 所述应答消息也至少包括第一应 答消息和第二应答消息。
5205 ,若第一接入点和第二接入点均加入所述虚拟基本服务集,则在所述 站点与所述第一接入点和所述第二接入点通信时,所述站点根据所述第一接入 点的序列号和所述第二接入点的序列号,按顺序完成与所述第一接入点和所述 第二接入点的通信。
由于站点在在建立虚拟 BSS以及邀请接入点加入虚拟 BSS时, 分别为不 同的接入点分配了对应的序列号, 因此, 当位于 OBSS系统中交叠区域的站点 请求与至少两个以上的接入点进行通信时, 站点就可以根据序列号的指示,对 接入点的通信顺序进行排序, 并依次序完成与各个接入点的通信过程, 不存在 沖突的情况,因此提升了 OBSS系统中单个站点与多个接入点通信的稳定性和 效率。
当然, 若所述站点仅与所述第一接入点通信, 则所述站点可以在所述第一 接入点和所述第二接入点确认这一状况并告知所述站点之后 ,所述站点再完成 与所述第一接入点的通信。
请参照图 3 , 为本发明构建虚拟基本服务集的方法的第三实施例的流程示 意图, 在本实施例中, 所述方法包括以下步骤:
S301 , 站点扫描信道, 获取位于所述站点工作区域内的接入点信息。 此处的扫描可以由站点主动发起,也可以由站点接收接入点的要求被动开 始扫描信道。位于所述站点工作区域内的接入点可以工作在一个信道上,也可 以工作在不同的信道上。 可以与所述站点关联, 也可以不进行关联, 本实施例 不作任何限制。
5302,发送第一加入请求至第一接入点,请求所述第一接入点加入所述虚 拟基本服务集。
5303 , 所述站点接收所述第一接入点返回的第一应答消息。
5304,根据所述第一应答消息判断所述第一接入点是否同意所述第一加入 请求。 若是, 则执行步骤 S305 , 否则执行步骤 S306。
5305 , 所述站点将所述第一接入点加入所述虚拟基本服务集。
S306, 不将所述第一接入点加入所述虚拟基本服务集。
5307,所述站点发送第二加入请求至第二接入点,请求所述第二接入点加 入所述虚拟基本服务集。
需要说明的是, 步骤 S306中所述其他接入点可以是所述第二接入点, 若 所述站点与所述第二接入点构建虚拟 BSS成功, 则无需再发送第二构建请求 给所述第二接入点请求所述第二接入点加入虚拟 BSS。
5308 , 所述站点接收所述第二接入点返回的第二应答消息。
5309,根据所述第二应答消息判断所述第一接入点是否同意所述第二加入 请求, 若是, 则执行步骤 S310, 否则执行步骤 S311。
5310, 所述站点将所述第二接入点加入所述虚拟基本服务集。
S311 , 不将所述第二接入点加入所述虚拟基本服务集。
S312, 若所述第一接入点和所述第二接入点均加入所述虚拟基本服务集, 则在所述站点与所述第一接入点和所述第二接入点通信时,所述站点根据所述 第一接入点的序列号和所述第二接入点的序列号,按顺序完成与所述第一接入 点和所述第二接入点的通信。
具体地,在所述站点发起通信请求时, 所述第一接入点和所述第二接入点 将按照序列号对应的顺序依次返回应答消息给所述站点, 从而完成顺序通信。
在整个过程中,所述站点发送第一加入请求和发送第二加入请求并没有严 格的时间先后顺序, 两者既可以同时进行也可以分开进行, 只需要不同的加入 请求中序列号不同即可。 同样地,接收第一应答消息和接收第二应答消息并根 据这些消息邀请对应的接入点加入虚拟基本服务集,既可以同时进行也可以分 时进行, 本发明不作任何限制。 在本实施例中, 给出了构建虚拟 BSS与邀请 接入点加入已建立的 BSS 的方法, 在这两个过程中, 站点与接入点完成信息 交互的方式可以利用已有的关联请求帧、 探测请求帧、 关联响应帧、 探测响应 帧、 控制帧、 管理帧或数据帧完成, 当然, 也可以配置专用的新的控制帧或管 理帧来完成。
请参照图 4, 为本发明站点的第一实施例的组成示意图。 在本实施例中, 所述站点包括: 建立单元 100、 发送单元 200及加入单元 300。
所述建立单元 100用于建立虚拟基本服务集;
所述发送单元 200用于发送加入请求至接入点,请求所述接入点加入所述 虚拟基本服务集;
所述加入单元 300用于接收所述接入点返回的应答消息,若所述接入点同 意所述加入请求, 则所述站点将所述接入点加入所述虚拟基本服务集;
其中, 所述加入请求中包括一个序列号, 所述序列号用于指示接收所述加 入请求的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第 二接入点, 所述加入请求至少包括第一加入请求和第二加入请求。
优选地,所述加入请求还包括所述虚拟基本服务集的虚拟基本服务集标识 符和期望所述虚拟基本服务集存在的时长,所述应答消息包括所述接入点确定 的所述虚拟基本服务集存在的时长。
所述加入请求包含于所述站点发送给所述接入点的关联请求帧中,所述应 答消息包含于所述接入点返回的关联响应帧中; 或
所述加入请求包含于所述站点发送给所述接入点的探测请求帧中 ,所述应 答消息包含于所述接入点返回的探测响应帧中。
所述发送单元 200具体用于:
发送第一加入请求至第一接入点,请求所述第一接入点加入所述虚拟基本 服务集, 以及发送第二加入请求至第二接入点,请求所述第二接入点加入所述 虚拟基本服务集;
所述加入单元 300具体用于:
接收所述第一接入点返回的第一应答消息,根据所述第一应答消息判断所 述第一接入点是否同意所述第一加入请求, 若是, 则所述站点将所述第一接入 点加入所述虚拟基本服务集;
接收所述第二接入点返回的应答消息,根据所述第二应答消息判断所述第 一接入点是否同意所述第二加入请求, 若是, 则所述站点将所述第二接入点加 入所述虚拟基本服务集。
请参照图 5 , 为本发明站点的第二实施例的组成示意图。 在本实施例中, 所述站点包括: 建立单元 100、 发送单元 200、 加入单元 300及排序单元 400。
所述建立单元 100用于建立虚拟基本服务集;
所述发送单元 200用于发送加入请求至接入点,请求所述接入点加入所述 虚拟基本服务集;
所述加入单元 300用于接收所述接入点返回的应答消息,若所述接入点同 意所述加入请求, 则所述站点将所述接入点加入所述虚拟基本服务集;
其中, 所述加入请求中包括一个序列号, 所述序列号用于指示接收所述加 入请求的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第 二接入点, 所述加入请求至少包括第一加入请求和第二加入请求。
所述排序单元 400用于若所述第一接入点和所述第二接入点均加入所述 虚拟基本服务集,则在所述第一接入点和所述第二接入点同时与所述站点通信 时,根据所述第一接入点的序列号和所述第二接入点的序列号,指示所述站点 按顺序完成与所述第一接入点和所述第二接入点的通信。
请参照图 6, 为本发明站点的第三实施例的组成示意图。 在本实施例中, 所述站点包括: 建立单元 100、 发送单元 200、 加入单元 300、 排序单元 400 及扫描单元 500。
所述建立单元 100用于建立虚拟基本服务集;
所述发送单元 200用于发送加入请求至接入点,请求所述接入点加入所述 虚拟基本服务集;
所述加入单元 300用于接收所述接入点返回的应答消息,若所述接入点同 意所述加入请求, 则所述站点将所述接入点加入所述虚拟基本服务集;
其中, 所述加入请求中包括一个序列号, 所述序列号用于指示接收所述加 入请求的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第 二接入点, 所述加入请求至少包括第一加入请求和第二加入请求。
所述排序单元 400用于为所述接入点配置序列号,以及在所述接入点退出 所述虚拟基本服务集时, 回收所述序列号。 加入请求至接入点之前进行配置,也可以在接入点加入所述虚拟基本服务集之 后, 该接入点的序列号需要变更时, 为该接入点重新配置新的序列号, 此时, 可以对原有的序列号进行回收, 当然, 也可以不回收, 直接发送携带新序列号 的消息给该接入点, 利用新的序列号覆盖旧的序列号即可。 这样, 旧的序列号 即可以视为自动回收。
所述扫描单元 500用于扫描信道,获取位于所述站点工作区域内的接入点 信息。
需要说明的是, 以上站点实施例中建立单元和 /或加入单元可以以硬件的 形式独立于站点的处理器单独设置,且设置形式可以是微处理器的形式; 也可 以以硬件形式内嵌于站点的处理器中,还可以以软件形式存储于站点的存储器 中, 以便于站点的处理器调用执行以上构建单元或加入单元对应的操作。
例如, 在本发明站点的第一实施例 (图 4所示的实施例) 中, 建立单元 100和 /或加入单元 300可以为站点的处理器,而发送单元 200的功能可以内嵌 于该处理器中。 另外, 图 5所示的排序单元 400同建立单元 100或加入单元 300, 可以独立于处理器单独设置, 也可以内嵌于处理器, 也可以以软件的形 式存储于存储器中, 由处理器调用实现其功能。 图 6所示的扫描单元 500同建 立单元 100或加入单元 300类似, 可以独立于处理器单独设置,也可以内嵌于 处理器, 也可以以软件的形式存储于存储器中, 由处理器调用实现其功能。
当然, 发送单元 200可以作为站点的接口电路, 可以与建立单元 100、 加 入单元 300、 排序单元 400或扫描单元 500集成, 也可以独立设置。 本发明实 施例不做任何限制。 以上处理器可以为中央处理单元(CPU )、 微处理器、 单 片机等。
请参照图 7, 为本发明站点的第四实施例的组成示意图。 在本实施例中, 所述站点包括: 接口电路 110、 存储器 120以及与所述接口电路 110和存储器 120相连接的处理器 130。其中存储器 120用于存储一组程序代码,处理器 130 用于调用存储器 120中存储的程序代码,执行本发明构建虚拟基本服务集的方 法的第一至第三任一实施例中所述的操作。 请参照图 8, 为本发明实施例系统的组成示意图。 在本实施例中, 所述系 统包括: 如本发明站点的第一至第三任一实施例所述的站点 STA, 以及第一接 入点 API及第二接入点 AP2。
所述第一接入点 API用于接收所述站点 STA发送的第一加入请求, 发送 第一应答消息给所述站点 STA,其中,所述第一加入请求包括指示所述第一接 入点 API与所述站点 STA通信顺序的序列号, 所述第一应答消息用于指示所 述第一接入点 API是否同意所述第一加入请求;
所述第二接入点 AP2用于接收所述站点 STA发送的第二加入请求, 发送 第二应答消息给所述站点, 其中,所述第二加入请求包括指示所述第二接入点 AP2与所述站点 STA通信顺序的序列号, 所述第二应答消息用于指示所述第 二接入点 AP2是否同意所述第二加入请求由于 STA位于 API对应的 BSS1及 AP2对应的 BSS2的交叠区域, 因此 STA与 API及 AP2构成 OBSS系统, 在 OBSS系统下, STA通过与 API及 AP2建立虚拟 BSS, 并分别为 API及 AP2 分配相应的序列号, 从而可以在 STA请求同时与 API及 AP2通信时, API及 AP2可以根据分配的序列号按顺序返回应答消息, 与 STA依次完成通信, 从 而确保 OBSS系统中,单个 STA与多个 AP通信的正常完成,提高了整个系统 的容错性和稳定性。
需要说明的是, 本说明书中的各个实施例均采用递进的方式描述,每个实 施例重点说明的都是与其它实施例的不同之处,各个实施例之间相同相似的部 分互相参见即可。 对于装置实施例而言, 由于其与方法实施例基本相似, 所以 描述的比较筒单, 相关之处参见方法实施例的部分说明即可。
通过上述实施例的描述, 本发明具有以下优点:
在 OBSS系统中, 位于相邻 BSS交叠区域的站点, 通过与多个接入点建 立虚拟 BSS,这样就可以避免在 OBSS系统中, 多个接入点希望同时与位于交 叠区域的站点进行通信时, 因为时间沖突导致通信失败的问题,从而提高了站 点通信的稳定性和效率, 利于整个系统的正常运转。
本领域普通技术人员可以理解:实现上述方法实施例的全部或部分步骤可 以通过程序指令相关的硬件来完成,前述的程序可以存储于一计算机可读取存 储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述的存储 介质包括: R0M、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。 以上对本发明实施例所提供的一种构建虚拟基本服务集的方法、站点及系 阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时, 对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围 上均会有改变之处, 综上所述, 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种构建虚拟基本服务集的方法, 其特征在于, 包括:
站点建立虚拟基本服务集;
所述站点发送加入请求至接入点,请求所述接入点加入所述虚拟基本服务 集;
所述站点接收所述接入点返回的应答消息,若所述接入点同意所述加入请 求, 则所述站点将所述接入点加入所述虚拟基本服务集;
其中, 所述加入请求中包括一个序列号, 所述序列号用于指示接收所述加 入请求的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第 二接入点, 所述加入请求至少包括第一加入请求和第二加入请求。
2、 如权利要求 1所述的方法, 其特征在于, 所述站点发送加入请求至接 入点, 请求所述接入点加入所述虚拟基本服务集, 包括:
所述站点发送第一加入请求至第一接入点,请求所述第一接入点加入所述 虚拟基本服务集;
所述站点发送第二加入请求至第二接入点,请求所述第二接入点加入所述 虚拟基本服务集;
所述站点接收所述接入点返回的应答消息,若所述接入点同意所述加入请 求, 则所述站点将所述接入点加入所述虚拟基本服务集, 包括:
所述站点接收所述第一接入点返回的第一应答消息,根据所述第一应答消 息判断所述第一接入点是否同意所述第一加入请求, 若是, 则所述站点将所述 第一接入点加入所述虚拟基本服务集;
所述站点接收所述第二接入点返回的第二应答消息,根据所述第二应答消 息判断所述第一接入点是否同意所述第二加入请求, 若是, 则所述站点将所述 第二接入点加入所述虚拟基本服务集。
3、 如权利要求 1或 2所述的方法, 其特征在于, 若所述第一接入点和所 述第二接入点均加入所述虚拟基本服务集,则在所述站点与所述第一接入点和 所述第二接入点通信时,所述站点根据所述第一接入点的序列号和所述第二接 入点的序列号, 按顺序完成与所述第一接入点和所述第二接入点的通信。
4、 如权利要求 1-3任一项所述的方法, 其特征在于, 所述站点发送加入 请求至接入点, 请求所述接入点加入所述虚拟基本服务集之前, 还包括: 所述站点扫描信道, 获取位于所述站点工作区域内的接入点信息。
5、 如权利要求 1-4任一项所述的方法, 其特征在于, 所述加入请求包含 于所述站点发送给所述接入点的关联请求帧中,所述应答消息包含于所述接入 点返回的关联响应帧中; 或
所述加入请求包含于所述站点发送给所述接入点的探测请求帧中 ,所述应 答消息包含于所述接入点返回的探测响应帧中。
6、 如权利要求 1-5任一项所述的方法, 其特征在于, 所述加入请求还包 括所述虚拟基本服务集的虚拟基本服务集标识符和期望所述虚拟基本服务集 存在的时长,所述应答消息包括所述接入点确定的所述虚拟基本服务集存在的 时长。
7、 一种站点, 其特征在于, 包括:
建立单元, 用于建立虚拟基本服务集;
发送单元, 用于发送加入请求至接入点,请求所述接入点加入所述虚拟基 本服务集;
加入单元, 用于接收所述接入点返回的应答消息, 若所述接入点同意所述 加入请求, 则所述站点将所述接入点加入所述虚拟基本服务集;
其中, 所述加入请求中包括一个序列号, 所述序列号用于指示接收所述加 入请求的接入点与所述站点的通信顺序,所述接入点至少包括第一接入点和第 二接入点, 所述加入请求至少包括第一加入请求和第二加入请求。
8、 如权利要求 7所述的站点, 其特征在于, 所述发送单元具体用于: 发送第一加入请求至第一接入点,请求所述第一接入点加入所述虚拟基本 服务集, 以及发送第二加入请求至第二接入点,请求所述第二接入点加入所述 虚拟基本服务集;
所述加入单元具体用于:
接收所述第一接入点返回的第一应答消息,根据所述第一应答消息判断所 述第一接入点是否同意所述第一加入请求, 若是, 则所述站点将所述第一接入 点加入所述虚拟基本服务集;
接收所述第二接入点返回的应答消息,根据所述第二应答消息判断所述第 一接入点是否同意所述第二加入请求, 若是, 则所述站点将所述第二接入点加 入所述虚拟基本服务集。
9、 如权利要求 7或 8所述的站点, 其特征在于, 所述站点还包括: 排序单元, 用于为所述接入点配置序列号, 以及在所述接入点退出所述虚 拟基本服务集时, 回收所述序列号。
10、 如权利要求 7-9任一项所述的站点, 其特征在于, 所述站点还包括: 扫描单元, 用于扫描信道, 获取位于所述站点工作区域内的接入点信息。
11、 如权利要求 7-10任一项所述的站点, 其特征在于, 所述加入请求包 含于所述站点发送给所述接入点的关联请求帧中,所述应答消息包含于所述接 入点返回的关联响应帧中; 或
所述加入请求包含于所述站点发送给所述接入点的探测请求帧中 ,所述应 答消息包含于所述接入点返回的探测响应帧中。 12、 如权利要求 7-11任一项所述的站点, 其特征在于, 所述加入请求还 包括所述虚拟基本服务集的虚拟基本服务集标识符和期望所述虚拟基本服务 集存在的时长,所述应答消息包括所述接入点确定的所述虚拟基本服务集存在 的时长。 种计算机程序产品, 包括计算机可读介质, 所述计算机可读介质包 括一组程序代码, 用于执行如权利要求 1-7任一项所述的方法。
14、 一种系统, 其特征在于, 包括:
如权利要求 7-12任一项所述的站点;
至少两个接入点,其中, 所述至少两个接入点中的第一接入点用于接收所 述站点发送的第一加入请求, 发送第一应答消息给所述站点, 其中, 所述第一 加入请求包括指示所述第一接入点与所述站点通信顺序的序列号,所述第一应 答消息用于指示所述第一接入点是否同意所述第一加入请求;
所述至少两个接入点中的第二接入点用于接收所述站点发送的第二加入 请求, 发送第二应答消息给所述站点, 其中, 所述第二加入请求包括指示所述 第二接入点与所述站点通信顺序的序列号,所述第二应答消息用于指示所述第 二接入点是否同意所述第二加入请求。
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