CN102387539A - Implement method and system for cluster management and load balancing of WLAN system - Google Patents

Implement method and system for cluster management and load balancing of WLAN system Download PDF

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CN102387539A
CN102387539A CN 201110338259 CN201110338259A CN102387539A CN 102387539 A CN102387539 A CN 102387539A CN 201110338259 CN201110338259 CN 201110338259 CN 201110338259 A CN201110338259 A CN 201110338259A CN 102387539 A CN102387539 A CN 102387539A
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acs
target
aps
load
method
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罗来财
黄海峰
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福建三元达通讯股份有限公司
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Abstract

The invention discloses an implement method and a system for cluster management and load balancing of a WLAN (Wireless Local Area Network) system. The method comprises the following steps: an S100, an S200, an S300, an S400, an S500, an S600 and an S700, wherein in the S100, adjacent ACs (Access Point Controller) built up a cluster management channel, and periodically exchange load information; in the S200, APs (Access Point) are mounted to the lighter ACs, that is, the target ACs of the APs; in the S300, the APs request the target ACs to send echo response; in the S400, the target ACs response the request and send the echo response; in the S500, the APs analyse the target ACs whether or not have too much load, if yes, the APs send a target changing-over request, if not, the target is not changed over and turned into the S300; in the S600, the APs change over the target ACs; and in the S700, the method is completed. According to the invention, by combining the above implement method and the system, the plurality of ACs are deployed to complete the task for managing and controlling APs and intensively forwarding service flow, and the uniform distribution and the mutual backup of the load between the ACs are simultaneously realized.

Description

一种WLAN系统集群管理和负载均衡的实现方法和系统 Between a WLAN system and cluster management method and system load balancing

技术领域 FIELD

[0001] 本发明涉及无线局域网系统(WLAN,Wireless Local Area Network)的负载均衡领域,更具体地,涉及无线控制器(AC,Access Point Controller)之间的集群管理和动态负载均衡实现方法以及一种集群管理和动态负载均衡的系统。 [0001] Load balancing relates to the field of wireless local area network system (WLAN, Wireless Local Area Network) according to the present invention, more particularly, to a cluster management and dynamic load balancing between access controller (AC, Access Point Controller), and an implementation method kind of cluster management and dynamic load balancing system.

背景技术 Background technique

[0002] WLAN即Wireless Local Area Network,无线局域网。 [0002] WLAN that is, Wireless Local Area Network, wireless local area network. 和普通的以太网(有线局域网)不同,WLAN主要使用无线电波或者红外光线等介质进行信号的传输,参照附图1,除互联网外,WLAN系统由终端站点WLAN系统由终端站点(STA,Station)、接入点(AP,Access Point)和无线控制器(AC, Access Point Controller)组成。 And common Ethernet (wired LAN) different, the main WLAN uses radio waves or infrared light and other signal transmission medium, a reference to the drawings, in addition to the Internet, a WLAN system end station terminal system consists of WLAN station (STA, Station) , access point (AP, access point) and wireless controllers (AC, access point controller) composition.

[0003] 无线局域网(WLAN)技术基于802. 11媒体接入控制标准,该标准定义了终端站点(STA)和接入点(AP)之间的无线接口。 [0003] Wireless LAN (WLAN) technology is based on 802.11 Media Access Control standard that defines the radio interface between the terminal station (STA) and an access point (AP). 随着无线技术的发展和802. 11媒体接入控制标准的完善,现在无线局域网(WLAN)已经大规模地部署,单个无线局域网(WLAN)的规模也非常大,通常单个无线局域网(WLAN)内包含几百到几千台接入点(AP)。 With the development of wireless technology to improve and 802.11 media access control standards, and now wireless local area network (WLAN) has been deployed on a large scale, the scale of a single wireless local area network (WLAN) is very large, usually a single wireless local area network (WLAN) within station comprising hundreds to thousands of access points (AP).

[0004] 为了更好地管理控制这些接入点(AP)和无线局域网(WLAN)业务数据流量,引入了集中式无线局域网的概念和无线控制器(AC)。 [0004] In order to better manage the access control point (AP) and wireless local area network (WLAN) traffic data traffic, the concept of centralized wireless LAN and the wireless controller (AC). 在集中式无线局域网中,由无线控制器管理控制接入点(AP)的配置和终端站点(STA)的业务数据流量。 In centralized wireless local area network, managed by the radio controller controlling an access point (AP) and the configuration of terminal station (STA) traffic data traffic. 接入点(AP)和无线控制器(AC)之间通过CAPWAP协议连接,CAPWAP协议是由国际互联网组织规定专门用于无线控制与配置的协议。 Between the access point (AP) and the wireless controller (AC) via CAPWAP protocol, CAPWAP protocol is a protocol designed for wireless control and configuration specified by the International Organization Internet. 另外,在集中式无线局域网中,通常由无线控制器集中转发和管理用户的业务数据流量。 Further, in the centralized WLAN, typically focused by the wireless controller and the management of traffic forwarding data traffic users.

[0005] 请参阅附图1,CAPWAP协议定义了无线控制器(AC)和无线接入点(AP)之间的控制管理通道和数据转发通道,分别管理控制接入点(AP)和管理转发用户的业务数据流量。 [0005] See figures 1, CAPWAP protocol defines a control and management channel between the data access controller (AC) and Access Point (AP) forwarding tunnel management control respectively the access point (AP) forwarding and management user business data traffic. 由于单台无线控制器的处理能力和容量有限,在一些大规模的无线局域网(WLAN)中会部署多台无线控制器,用于分担管理控制接入点和集中转发业务流量的任务。 Due to the limited processing power and capacity of a single wireless controller, and in some large-scale wireless local area network (WLAN) will deploy multiple wireless controllers, access points for sharing and centralized management control task of forwarding traffic.

[0006] 在规模较大的集中式无线局域网的部署过程中,通过部署多台无线控制器(AC) 可以分担管理控制接入点和集中转发业务流量的任务,但是如何让无线控制器之间的负载均勻分布并且互相备份,业界还没有看到系统的处理方法。 [0006] In the process of deploying large-scale centralized wireless local area network, you can share management control by deploying multiple access points Wireless Controller (AC) and centralized traffic forwarding task, but how to get between the wireless controller the mutual backup and uniformly distributed load, the industry has not seen treatment system.

[0007] 中国专利CN200810112188. 3中公开了一种在无线移动终端接STA进入无线网络的过程,无线集中控制器AC计算对应无线接入点AP的负载,如果对应无线接入点AP负载过重,那么拒绝这个移动终端的接入请求,利用移动终端STA自动在多个无线接入点(AP) 选择加入的特点,一定程度上实现无线接入点之间的负载均衡。 [0007] Chinese patent CN200810112188. 3 discloses a process of an access terminal in a wireless mobile STA enters a wireless network, the centralized controller AC calculates wireless load corresponding to the wireless access point AP, the wireless access point AP if the corresponding overloading , then reject the access request of the mobile terminal, the mobile terminal STA automatically using a plurality of wireless access points (AP) opt characteristics, load balancing between the wireless access point to a certain extent. 但是这个方法不能解决在大规模集中式无线局域网中无线控制器(AC)之间的任务负载不均衡的问题。 However, this method does not resolve the large-scale centralized wireless LAN workload between the wireless controller (AC) does not balance.

[0008] 中国专利CN200810222269. 9中公开了一种方法,该方法是在无线接入点(AP)获取所在网络中各无线控制器的各项网络性能参数,然后分别根据各项网络性能参数,对各无线控制器的网络性能进行分析处理,得到各无线控制器的综合网络性能参数。 [0008] Chinese patent CN200810222269. 9 discloses a method of obtaining network performance parameters are located in each radio network controller in a wireless access point (the AP), then the network performance parameters according to respectively, performance of each radio network controller is analyzed to give an integrated radio network performance parameters for each controller. 无线接入点(AP)根据各无线控制器的综合网络性能参数,选择接入一个综合网络性能达到预设标准的无线控制器,从而一定程度上实现WLAN中无线控制器之间的负载均衡,可以充分利用网络资源为客户端提供网络服务,提高网络性能。 A wireless access point (AP) according to the comprehensive performance parameter for each radio network controller, selecting an access network integrated performance to a preset standard radio controller, thereby achieving load balancing between the WLAN radio controller to a certain extent, you can make full use of network resources to provide client services network, improve network performance. 但是这个方法没有考虑所在无线局域网的动态变化因素,比如某一个无线控制器下面所管理的终端用户数量突然增多会导致对应无线控制器的任务负载加重。 However, this method does not consider dynamic variables where the wireless LAN, such as the number of end-user wireless controller below a certain managed by a sudden increase will lead to a corresponding wireless controller workload increased.

[0009] 中国专利200780014125. 8中公开了一种方法,该方法是在无需复杂修改的情况下调节AP信标消息的发射功率电平以便减小拥塞,但是不需要调节AP数据业务信道的发射功率电平。 [0009] Chinese Patent No. 200780014125.8 discloses a method of adjusting the transmit power level is AP beacon messages without requiring complicated modification to reduce congestion, but does not need to adjust the transmit AP data traffic channel Power level. 这个方法在一定程度上实现无线接入点之间的负载均衡。 The load balancing method between the wireless access point to a certain extent. 但是和专利[200810112188. 3]解决的问题相似,不能解决在大规模集中式无线局域网中无线控制器(AC)之间的任务负载不均衡的问题。 But the patent and [200,810,112,188.3] to solve similar problems can not be solved in large-scale centralized wireless LAN workload between the wireless controller (AC) does not balance.

[0010] 因此,我们需要综合考虑集中式无线局域网的特点,提出一种集群管理和动态负载均衡的方法。 [0010] Therefore, we need to consider the characteristics of centralized wireless local area network, a method of cluster management and dynamic load balancing.

发明内容 SUMMARY

[0011] 本发明主要解决的技术问题是提供一种实现无线控制器之间的负载均勻分布的方法。 [0011] The present invention solves the technical problem is to provide a method of uniformly distributed load between wireless controllers.

[0012] 为解决上述技术问题,本发明采用的一个技术方案是:提供一种集群管理和负载均衡的实现方法,该方法包括以下步骤: [0012] To solve the above problems, an aspect of the present invention uses: providing a load balancing cluster management and implementation, the method comprising the steps of:

[0013] SlOO :相邻无线控制器间建立集群管理通道,通过该通道周期性交换负载信息; [0013] SlOO: between neighboring cluster management controller establishes a wireless channel, the periodic exchange of load information through the passageway;

[0014] S200 :无线接入点挂载到负载较轻的无线控制器,即为无线接入点的目标无线控制器; [0014] S200: the wireless access point to mount lightly loaded radio controller, the wireless access point of the target radio controller;

[0015] S300 :无线接入点请求目标无线控制器发送响应报文; [0015] S300: the target radio access point controller transmits a request response packet;

[0016] S400 :目标无线控制器响应无线接入点的请求,并向无线接入点发送响应报文; [0016] S400: The wireless controller in response to a request target wireless access point, wireless access point and sends a response message;

[0017] S500:无线接入点接收并分析响应报文,分析目标无线控制器是否负载过多, 若是,则发起切换目标无线控制器请求;若否,则无线接入点不切换目标无线控制器,转S300 ; [0017] S500: the wireless access point receives and analyzes the response packet, the destination radio controller analyzes whether the load is too large, and if yes, initiating a handover request to the target radio controller; if not, then the wireless access point does not handover destination radio control , a switch S300;

[0018] S600 :无线接入点切换到负载较小的新目标无线控制器上; [0018] S600: the wireless access point is switched to the smaller load new target radio controller;

[0019] S700:结束。 [0019] S700: the end.

[0020] 所述步骤SlOO建立集群管理通道包括:发现过程和协商过程;发现过程:无线控制器根据系统管理的配置信息向相邻无线控制器发送建立通道请求,相邻无线控制器接收到请求后作出应答,建立集群管理通道;协商过程:无线控制器统计自身的负载数量,并与相邻无线控制器AC交换负载信息,并将负载数量相比较,选出无线接入点负载数量最少的无线控制器。 [0020] The establishing step SlOO cluster management channel comprising: discovery and negotiation processes; discovery process: The radio controller transmits configuration information to the system management controller neighboring wireless channel establishment request, the access controller receives a request adjacent after respond to build a cluster management channel; negotiation process: the wireless controller counting the number of load itself, and the neighboring wireless controller AC load information exchange, and compares the number of loads, select the minimum number of wireless access point load Wireless Controller.

[0021] 其中,所述的负载信息包括:对应无线控制器的无线接入点容量、当前关联的无线接入点数量、无线客户端容量、当前管理的无线客户端数量、转发吞吐能力流量、当前正在转发的流量。 [0021] wherein the load information comprises: a wireless controller corresponding to the capacity of a wireless access point, the current number of associated wireless access point, the wireless client capacity, the number of the current management of the wireless client, forwarding traffic handling capacity, currently it is forwarded traffic.

[0022] 进一步的,所述集群管理通道的建立过程应用无线接入点控制与配置协议。 [0022] Further, the process of establishing the cluster management application channel wireless access point control protocol configuration.

[0023] 其中,目标无线控制器负载过多的情况下,所述步骤S500包括: [0023] wherein, the target wireless controller excessive load condition, the step S500 comprises:

[0024] S511 :无线接入点接收目标无线控制器发送的响应报文,得知目标无线控制器已负载;[0025] S512 :无线接入点发起切换无线控制器挂载点请求; [0024] S511: the target wireless access point receives a radio message sent in response to the controller, the wireless controller that the target has a load; [0025] S512: the wireless access point to initiate a handover request to the wireless controller mount point;

[0026] S513:已经关联的目标无线控制器是否接受请求,若拒绝,则转向S514,若接受, 则转入S516 ; [0026] S513: the target has been associated with the wireless controller whether to accept the request, if rejected, then go to S514, if accepted, the process proceeds to S516;

[0027] S514:无线接入点发起加入新目标无线控制器请求,新目标无线控制器应答加入请求,并分析是否让无线接入点加入该无线控制器,若是,则转S515 ;若否,则循环S514 ; [0027] S514: the wireless access point to initiate wireless controller requests to add a new target, target new wireless controller acknowledges the request to join, and analyze whether to allow wireless access point to join the wireless controller, and if so, turn S515; if not, the loop S514;

[0028] S515:已经关联的目标无线控制器向新目标无线控制器传递无线接入点的运行信息; [0028] S515: the target controller has an associated radio transmitting operation information of the wireless access point to a new destination radio controller;

[0029] S516 :结束。 [0029] S516: the end.

[0030] 此外,所述步骤S500中,特定无线接入点的切换无线控制器的操作由无线控制器发起,包括以下步骤: [0030] Further, in the step S500, the switching operation of the wireless controller particular wireless access point is initiated by the wireless controller, comprising the steps of:

[0031] S521 :无线接入点接收目标无线控制器的响应报文; [0031] S521: the wireless access point receives a response to the target radio packet controller;

[0032] S522:在目标无线控制器负载过多情况下,无线接入点发起切换无线控制器通告, 接着转入步骤S523 ; [0032] S522: the target radio controller excessive load case, the wireless access point to initiate the wireless controller switching announcement, then proceeds to step S523;

[0033] S 523 :无线接入点发起加入新目标无线控制器,请求新目标无线控制器应答加入请求; [0033] S 523: initiate a wireless access point to a new destination radio controller, the controller to request a new destination radio transponder join request;

[0034] 已经关联的目标无线控制器向新目标无线控制器传递无线接入点运行信息,接着转向S524 ; [0034] The target controller has an associated wireless access point operational information is transmitted to a new destination radio controller, then turn S524;

[0035] S524 :结束。 [0035] S524: the end.

[0036] 进一步的,无线接入点周期性的接收响应报文。 [0036] Further, the wireless access point periodically receives the response packet.

[0037] 其中,所述的响应报文为无线接入点控制与配置协议的控制报文,包括:IP报文头部、UDP报文头部、CAPffAP报文头部、CAPffAP控制层和消息内容。 [0037] wherein said response packet is a control packet with the wireless access point configuration control protocol, comprising: IP packet header, UDP header packet, CAPffAP packet header, CAPffAP message control layer and content.

[0038] 其中,所述的消息内容应用TLV格式表示,包括:无线控制器名称、厂商信息、位置信息、负载信息和无线接入点运行信息。 [0038] wherein the message content application TLV format, comprising: a wireless controller name, vendor information, location information, loading information, and wireless access points operating information.

[0039] 应用该方法的有益效果是:区别于现有的技术方案,无法解决大规模集中式无线局域网中无线控制器AC之间的任务负载不均衡的问题,本发明提供的集中式无线局域网中集群管理和无线控制器之间动态负载均衡的方法。 [0039] The beneficial effect of application of the method is: different from the prior art solutions can not solve the task load between large-scale centralized wireless LAN radio controller AC imbalance problems, the present invention provides centralized wireless LAN methods between management and dynamic load balancing of wireless controllers in the cluster. 本技术方案中,AC之间通过集群管理通道周期性地交换负载信息,以让无线局域网系统能够实时地知道各个AC的当前负载;AP 在加入无线局域网的过程,根据获得的各个AC负载信息选择和相应的负载较小的AC关联; AP在运行过程,能够根据各个AC负载信息自动切换到负载较轻的AC上。 The present technical solution, between the AC load information exchanged through the cluster management channel periodically to allow the wireless LAN system is able to know in real time the current load of each AC; during the addition of the AP in the wireless LAN, each AC load information obtained from the selected and the respective associated load smaller AC; the AP during operation, each of the AC load information can be automatically switched according to the AC load lighter.

[0040] 本发明还公开了一种集群管理和动态负载均衡的系统,该系统应用上述集群管理和负载均衡的实现方法,包括无线接入点和无线控制器;所述无线接入点包括:无线用户信息收集模块、无线控制器信息收集模块、无线控制器选择加入模块和MIMO天线;所述MIMO天线与无线用户信息收集模块的输入端相连,无线用户信息收集模块的输出端与无线控制器选择加入模块的第一输入端相连,无线控制器信息收集模块的输出端与无线控制器选择加入模块相连的第二输入端相连;无线用户信息收集模块用于收集自身的运行数据, 无线控制器信息收集模块用于收集目标的负载信息,无线控制器选择加入模块用于选择切换新目标;所述无线控制器包括:无线控制器负载通告模块、无线控制器负载统计模块和集群管理模块;所述无线控制器负载统计模块输出端与所 [0040] The present invention also discloses a cluster management and dynamic load balancing system using the above cluster management and load balancing implemented method, comprising a wireless access point and the wireless controller; the wireless access point comprising: wireless subscriber information collection module, the wireless controller module to collect information, and the wireless controller module opt MIMO antenna; MIMO antenna connected to the input terminal information collection module of a wireless subscriber, wireless user output terminal information collection module and the wireless controller opt module coupled to a first input terminal, the output terminal of the radio controller information collection module is connected to the wireless controller selects the second input terminal connected to the module added; wireless subscriber information collection module for collecting operating data itself, the wireless controller load information collecting means for collecting information of the target wireless controller opt switching means for selecting a new target; the radio controller comprising: a wireless controller module announcement load, load statistics module and the wireless controller module cluster management; the the wireless controller module said load statistics and the output terminal 述集群管理计算模块的输入端相连,集群管理计算模块的输出端与无线控制器负载通告模块的输入端相连;无线控制器选择加入模块的输出端与无线控制器负载统计模块的输入端相连,无线控制器负载通告模块的输出端与无线控制器信息收集模块的输入端相连;所述无线控制器负载通告模块向相邻无线控制器通告负载信息,无线控制器负载统计模块统计自身的负载数量,所述集群管理模块用于建立集群管理通道。 Calculating said cluster management module inputs connected to the output terminal of cluster management module calculates the load input end of the wireless controller module advertised; opt radio controller input terminal and the output terminal of the wireless controller module is connected to the load statistics module, load controller output of the radio announcement module and the wireless controller input terminal is connected to the information collection module; the wireless controller module to load advertisement announcement load information of neighboring wireless controller, a wireless controller module load statistics counting the number of the load itself the cluster management modules for establishing a cluster management channel.

[0041] 通过该系统的技术方案,并与所述WLAN系统集群管理和负载均衡的实现方法的结合,在规模较大的集中式无线局域网的部署过程中,通过部署多台无线控制器AC即可实现分担管理控制接入点和集中转发业务流量的任务,同时实现了无线控制器之间的负载均勻分布并且相互备份。 [0041] By the aspect system and the WLAN system in conjunction with cluster management and implementation of load balancing in large-scale deployment of centralized wireless LAN by deploying multiple access controller AC i.e. sharing can be achieved and centralized access point management control task forward traffic, while achieving a uniform load distribution between the radio controller and back each other up.

附图说明[0042] 图1表示无线局域网的组成; BRIEF DESCRIPTION [0042] FIG. 1 shows the composition of a wireless local area network;

[0043] 图2表示集中式无线局域网的结构示意图; [0043] FIG. 2 shows a schematic of a centralized wireless LAN;

[0044] 图3表示本发明的一种实施方式中,AP加入网络的过程原理框图; [0044] FIG. 3 shows an embodiment of the present invention, the process functional block diagram of AP to join the network;

[0045] 图4表示本发明的一种实施方式中,AP加入网络的过程操作流程; [0045] FIG. 4 shows an embodiment of the present invention, the process operation flow AP to join the network;

[0046] 图5表示本发明的一种实施方式中组建无线局域网的运行情形; [0046] FIG. 5 shows an embodiment of the present invention, the operating situation of the formation of the wireless LAN;

[0047] 图6表示本发明的一种实施方式中组建无线局域网的运行过程操作流程图; [0047] FIG. 6 shows an embodiment of the present invention during operation the formation of the wireless LAN operation flowchart;

[0048] 图7表示本发明的一种实施方式中集群管理通道报文的格式; [0048] FIG. 7 shows an embodiment of the present invention, the embodiment of the cluster management channel packet format;

[0049] 图8表示本发明的一种实施方式中消息内容的格式; [0049] FIG. 8 shows the format of one embodiment of the present invention, the content of the message;

[0050] 图9表示本发明的一种改进方案中加密保护的集群管理通道报文格式; [0050] FIG. 9 shows a modification of the embodiment of the present invention, the cluster management channel encryption packet format;

[0051] 图10表示本发明的一种改进方案中采用专门报文通告负载信息的过程; [0051] FIG. 10 shows the process of loading information advertised special packet to a further embodiment of the present invention employed;

[0052] 图11表示本发明的一种实施方式中切换AC的过程; [0052] FIG. 11 shows one embodiment of the process of the AC switching of the present invention;

[0053] 图12表示本发明的一种实施方式中AP加入网络时通告负载信息的过程; [0053] FIG. 12 illustrates the process load advertisement information to an embodiment of the present invention, the AP to join the network;

[0054] 图13表示本发明的一种实施方式中运行过程通告负载信息的流程图; [0054] FIG. 13 shows an embodiment of the present invention during operation flowchart of advertisement information a load;

[0055] 图14表示本发明的一种改进方案中由AC端发起切换AC的过程; [0055] FIG. 14 shows a switching process by the AC AC side to an improved embodiment of the invention initiated;

[0056] 图15表示本发明的技术方案中集群管理和动态负载均衡的系统框图; [0056] FIG. 15 shows a system block diagram aspect of the present invention, cluster management and dynamic load balancing;

[0057] 图16表示本发明的技术方案中集群管理和负载均衡的实现方法的流程图。 [0057] FIG. 16 shows a flowchart illustrating the technical solution of the present invention, the cluster management and implementation of load balancing.

具体实施方式 detailed description

[0058] 为详细说明本发明的技术内容、构造特征、所实现目的及效果,以下结合实施方式并配合附图详予说明。 [0058] The teachings of the present invention in detail, structural features, objects and effects of the implementation, the following embodiments in conjunction with the accompanying drawings and to be described in detail.

[0059] 请参阅附图1,本发明应用于无线局域网WLAN,无线局域网和普通的以太网(有线局域)不同,WLAN主要使用无线电波或者红外光线等介质进行信号传输。 [0059] Please refer to FIG. 1, the present invention is applied to a wireless local area network WLAN, Ethernet and general wireless LAN (wired LAN) different, WLAN mainly using infrared light and other radio waves or signal transmission medium. 除互联网(Internet)部分外,WLAN系统由终端站点(STA,Station)、无线接入点(AP,Access Point) 和无线控制器(AC,Access Point Controller)组成。 In addition to the Internet (Internet) an outer part, WLAN systems by the terminal station (STA, Station), a wireless access point (AP, Access Point) and wireless controllers (AC, Access Point Controller) composition. 为了更好地管理控制这些无线接入点(AP)和无线局域网(WLAN)业务数据流量,引入了集中式无线局域网的概念和无线控制器(AC)。 To better manage the control of these wireless access points (AP) and wireless local area network (WLAN) traffic data traffic, the concept of centralized wireless LAN and the wireless controller (AC). 集中式无线局域网(WLAN)技术基于802. 11媒体接入控制标准,该标准定义了终端站点(STA)和接入点(AP)之间的无线接口。 Centralized wireless LAN (WLAN) technology is based on 802.11 Media Access Control standard that defines the radio interface between the terminal station (STA) and an access point (AP). 随着无线技术的发展和802. 11媒体接入控制标准的完善,现在无线局域网(WLAN)已经大规模地部署,单个无线局域网(WLAN)的规模也非常大,通常单个无线局域网(WLAN)内包含几百到几千台接入点(AP)。 With the development of wireless technology to improve and 802.11 media access control standards, and now wireless local area network (WLAN) has been deployed on a large scale, the scale of a single wireless local area network (WLAN) is very large, usually a single wireless local area network (WLAN) within station comprising hundreds to thousands of access points (AP). AC即AccessPoint Controller,无线控制器。 AC That AccessPoint Controller, a wireless controller. 无线局域网的单个接入点(AP)覆盖范围有限,所以通常需要许多接入点分布在不同的区域。 Single WLAN Access Point (AP) coverage is limited, thus typically require many access points located in different areas. 这些接入点(AP)的控制管理和终端站点(STA)的控制管理通常集中在一个网络设备上进行,这台负责管理控制接入点(AP)和终端站点(STA) 被称为无线控制器(AC)。 These access points (AP) and the terminal management control station (STA) the management control is generally focused on a network device, this control is responsible for managing the access point (AP) and a terminal station (STA) is referred to as radio control unit (AC). 在集中式无线局域网中,由无线控制器管理控制接入点(AP)的配置和终端站点(STA)的业务数据流量。 In centralized wireless local area network, managed by the radio controller controlling an access point (AP) and the configuration of terminal station (STA) traffic data traffic. 接入点(AP)和无线控制器(AC)之间通过CAPWAP协议连接,CAPWAP协议是由国际互联网组织规定专门用于无线控制与配置的协议。 Between the access point (AP) and the wireless controller (AC) via CAPWAP protocol, CAPWAP protocol is a protocol designed for wireless control and configuration specified by the International Organization Internet. 参阅附图2,在集中式无线局域网中,通常由无线控制器集中转发和管理用户的业务数据流量,图中, 线路1表示控制管理通道,线路2表示数据转发通道。 2 Referring to the drawings, in a centralized WLAN, typically centralized service data forwarding and traffic management of the wireless controller by the user, the drawings, 1 denotes a control line management channel, line 2 indicates the data transfer channel.

[0060] 综合考虑集中式无线局域网的特点,本发明提出了一种集群管理和负载均衡的实现方法,请参阅附图16,该方法包括以下步骤: [0060] Considering the characteristics of the centralized wireless LAN, the present invention proposes to realize a balanced load and a cluster management method, see Figure 16, the method comprising the steps of:

[0061] SlOO :相邻无线控制器间建立集群管理通道,通过该通道周期性交换负载信息; [0061] SlOO: between neighboring cluster management controller establishes a wireless channel, the periodic exchange of load information through the passageway;

[0062] S200 :无线接入点挂载到负载较轻的无线控制器,即为无线接入点的目标无线控制器; [0062] S200: the wireless access point to mount lightly loaded radio controller, the wireless access point of the target radio controller;

[0063] S300 :无线接入点请求目标无线控制器发送响应报文; [0063] S300: the target radio access point controller transmits a request response packet;

[0064] S400 :目标无线控制器响应无线接入点的请求,并向无线接入点发送响应报文; [0064] S400: The wireless controller in response to a request target wireless access point, wireless access point and sends a response message;

[0065] S500 :无线接入点接收并分析响应报文,分析目标无线控制器是否负载过多,若是,则发起切换目标无线控制器请求;若否,则无线接入点不切换目标无线控制器,转S 300 ; [0065] S500: the wireless access point receives and analyzes the response packet, the destination radio controller analyzes whether the load is too large, and if yes, initiating a handover request to the target radio controller; if not, then the wireless access point does not handover destination radio control , a switch S 300;

[0066] S600 :无线接入点切换到负载较小的新目标无线控制器上; [0066] S600: the wireless access point is switched to the smaller load new target radio controller;

[0067] S700 :结束。 [0067] S700: the end.

[0068] 为了实现无线控制器之间的动态负载均衡和整个无线局域网的集群管理,需要在无线控制器之间建立专用通信连接,用于相互通告负载信息和准备切换连接的接入点(AP)信息。 [0068] In order to achieve dynamic load balancing between the wireless controller and wireless LAN entire cluster management, the need to establish a dedicated communication connection between the wireless controller, and the load information for each advertisement prepare the handover of the connection access point (AP )information. 关于无线控制器之间的通信连接通道建立流程,业界已经有比较成熟技术方案,例如通用路由隧道协议(GRE)、无线接入点控制与配置协议(CAPWAP)等,可以根据具体应用场合的需要选择其中一种连接通道协议。 About the communication channel between the wireless controller connection establishment process, the industry has been relatively mature art solutions, such as Universal-Route Tunneling Protocol (the GRE), and the wireless access point control configuration protocol (the CAPWAP) and the like, may be required depending on the particular application of the select one of the connecting channel protocol. 本发明的最佳实施方式方案中,考虑到具体的应用场合是集中式无线局域网,所以集群管理通道的建立过程借鉴无线接入点控制与配置协议CAPWAP设计通信报文封装格式和通道建立流程。 BEST MODE FOR CARRYING the present invention, taking into account the particular application are centralized wireless LAN, the process of establishing the management cluster reference channel wireless access point configuration protocol CAPWAP control and design of the communication packet encapsulation formats and channel establishment procedures. CAPWAP协议(Control and Provisioning of Wireless Access Point Protocol Specification),控制禾口配置无线接入点的协议规范。 Protocol CAPWAP (Control and Provisioning of Wireless Access Point Protocol Specification), the control configuration of the wireless access point Wo port protocol specification. 在RFC5415文档中定义了这个协议规范的基本内容,用于指导集中式无线局域网的部署方式,具体地用于无线控制器(AC)和接入点(AP)之间的互联。 It is defined in the RFC5415 document in the content of this basic protocol specification for guiding deployment centralized wireless LAN, in particular for the interconnection between access controller (AC) and Access Point (AP).

[0069] 本发明的一种改进技术方案中,对集群管理通道进行修改,可以采用GRE(通用路由封装)通道或者根据安全需要参考CAPWAP协议为集群管理通道加上加密层。 [0069] An improved aspect of the present invention, the modified cluster management channel can be used GRE (Generic Routing Encapsulation) or according to the security needs of the reference channel CAPWAP protocol for cluster management channels plus encryption layer. 当参考CAPWAP协议为集群管理通道加上加密层后,参阅附图9,图中显示了在该优选实施方式中, 集群管理通道的报文格式。 When the reference cluster management protocol CAPWAP channels plus encryption layer, see Figure 9, this shows a preferred embodiment, the cluster management channel packet format of FIG.

[0070] 本发明的又一种改进技术方案中,建立集群管理通道时,为了让AC负载信息同步的周期不受CAPWAP心跳周期的限制,AC可以采用专门的CAPWAP厂商自定义消息周期性地向AP发送响应报文,即通告负载信息。 [0070] A further aspect of the present invention is improved, the cluster management channel is established, the synchronization information in order to allow the AC load cycle is not limited CAPWAP heartbeat period, AC can be employed vendor specific custom CAPWAP message periodically to AP sends a response message, i.e. the load information advertised. 请参阅附图10,图中表示出了AC采用专门的CAPWAP 厂商自定义消息周期性的通告负载消息的实现过程。 See Figure 10, a diagram is shown illustrating implementation using dedicated AC CAPWAP message vendor-defined periodic advertisement message load.

[0071] 其中,所述步骤S100集群管理通道建立包括:发现过程和协商过程;发现过程:无线控制器根据系统管理的配置信息向相邻无线控制器发送建立通道请求,相邻无线控制器接收到请求后作出应答,建立集群管理通道;协商过程:无线控制器统计自身的负载数量, 并与相邻无线控制器AC交换负载信息,并将负载数量相比较,选出无线接入点负载数量最少的无线控制器。 [0071] wherein the cluster management channel is established in step S100 comprising: discovery and negotiation processes; discovery process: The radio controller transmits configuration information to the system management controller neighboring wireless channel establishment request, receives the neighboring wireless controller respond to the request to build a cluster management channel; negotiation process: the wireless controller counting the number of load itself, and neighboring wireless controller AC load information exchange, and the number of loads compared to elect the number of wireless access point load minimal wireless controller.

[0072] 请参阅附图3和附图4,本发明的一个具体实施例,两个AC和两个AP组建无线局域网的AP加入AC的情形,ACl和AC2通过集群管理通道交换负载信息。 [0072] Please refer to FIG. 3 and FIG. 4, the case of Example, two AC and two wireless LAN AP set up a specific AP adds AC embodiment of the present invention, ACl AC2 and load information exchanged through the cluster management channel. AP2准备加入无线局域网,需要挂载到其中一个AC上面,AP2通过CAPWAP发现报文向无线局域网请求AC信息。 AP2 ready to join the wireless local area network, need to be mounted to one of the above AC, AC AP2 discovery packet request information to the wireless LAN via CAPWAP. ACl和AC2分别响应AP2的请求,在响应报文里面携带系统中AC负载信息列表,告诉AP2优先加入AC2。 ACl and AC2, respectively, in response to the request of AP2, carrying a list of systems AC load information in response to packets, told AP2 priority join AC2.

[0073] 请参阅附图5和附图6,图中表示出了AP切换挂载点AC的运行过程的原理图,图中两个AC和两个AP的组建无线局域网的运行情形,ACl和AC2通过集群管理通道交换负载信息。 [0073] See Figures 5 and 6, a schematic diagram is shown in FIG AP handoff operation procedure of the AC mount point, drawing two AC operating situation and the formation of two wireless LAN AP, and ACl AC2 load information exchange through the cluster management channel. ACl得知自己负载比AC2重并且可以通过调整达到均衡,就通知AP2准备切换。 ACl learned that his load is heavier than AC2 and can be adjusted to achieve a balanced, informs AP2 ready to switch. AP2 重新与AC2建立CAPWAP通道,达到整个系统的负载均衡。 AP2 re-establish CAPWAP channel and AC2, to achieve load balancing of the whole system.

[0074] 请参阅附图11、附图12和附图13,图中表示出了AP切换AC的过程,从图中看出, 所述步骤S500包括: [0074] Refer to FIG. 11, Fig. 12 and Fig. 13, the process shown in FIG AP handoff AC, and seen from the figure, the step S500 comprises:

[0075] S511 :无线接入点接收目标无线控制器发送的响应报文,得知目标无线控制器已负载; [0075] S511: the target wireless access point receives a radio message sent in response to the controller, the wireless controller that the target has a load;

[0076] S512 :无线接入点发起切换无线控制器挂载点请求; [0076] S512: the wireless access point to initiate a handover request to the wireless controller mount point;

[0077] S513:已经关联的目标无线控制器是否接受请求,若拒绝,则转向S514,若接受, 则转入S516 ; [0077] S513: the target has been associated with the wireless controller whether to accept the request, if rejected, then go to S514, if accepted, the process proceeds to S516;

[0078] S514:无线接入点发起加入新目标无线控制器请求,新目标无线控制器应答加入请求,并分析是否让无线接入点加入该无线控制器,若是,则转S515 ;若否,则循环S514 ; [0078] S514: the wireless access point to initiate wireless controller requests to add a new target, target new wireless controller acknowledges the request to join, and analyze whether to allow wireless access point to join the wireless controller, and if so, turn S515; if not, the loop S514;

[0079] S515:已经关联的目标无线控制器向新目标无线控制器传递无线接入点的运行信息; [0079] S515: the target controller has an associated radio transmitting operation information of the wireless access point to a new destination radio controller;

[0080] S516 :结束。 [0080] S516: the end.

[0081] 请参阅附图10,在S500中,在AP加入AC或者AP运行过程中,AC需要把当前系统中各个AC的负载信息通告给AP,AC向AP发送响应报文。 [0081] Refer to FIG. 10, in S500, the addition of AP or AP during operation AC, the AC needs to each AC current system load information to notify the AP, AC sends a response message to the AP. 其中,具体的通告方式在AP加入AC过程和AP运行过程有一点区别,其中,在AP加入AC过程,AC在发送给AP的发现请求响应报文(CAPWAP discover response)里携带各个AC的负载信息;在AP运行过程,AC在发送给AP的心跳响应报文(CAPWAP echo response)里携带各个AC的负载信息。 Wherein the specific notification methods with a difference in the AP adds AC process procedure and the AP operation, in which the AP was added AC process, AC request response message (CAPWAP discover response) in the load information carried in each AC is found is sent to the AP ; AP during operation, AC packets (CAPWAP echo response) was carried AC load information of each AP in response to a heartbeat. 在本发明实施例中,所述的负载信息包括:对应AC的AP容量、当前关联的AP数量、无线客户端容量、 当前管理的无线客户端数量、转发吞吐能力流量、当前正在转发的流量。 In an embodiment of the present invention, the load information includes: AP corresponding to the capacity of the AC, the number of the currently associated AP, the capacity of wireless clients, the number of the current management of the wireless client, forwarding traffic handling capacity currently being forwarded traffic. AP运行过程,收到各个AC的负载信息后,根据预设条件判断是否准备切换关联的AC。 After running the process the AP, receives load information of each AC, and determines whether the associated switching AC prepared according to preset conditions. 如果AP准备切换关联的AC,那么AP先向已经关联的AC发送一个切换AC的请求。 If the preparation for the handover associated AP AC, AC AP Xianxiang then transmits a handover has been associated with the AC request. 已经关联的AC可以接受对应AP的AC切换请求,也可以拒绝请求。 AC has been associated with the corresponding AP can accept AC handover request, the request may be denied. 如果已经关联的AC拒绝请求,那么本次切换结束;如果已经关联的AC接受请求,那么AP向目标AC发起加入请求,同时关联的AC向新目标AC 传递对应AP的当前运行信息。 If the AC rejects the request has been associated, then ends the handover; AC accept the request if already associated, the AP sends a Join request to the target AC, AC current running while transmitting the associated information corresponding to the target AP to the new AC. 已经关联的AC向新目标AC传递的AP运行信息,包括AP名称、AP的网络配置信息(IP地址和MAC地址)、AP上对应的WLAN配置、AP上已经关联的无线客户端MAC地址、AP上已经关联的无线客户端的转发表项、AP上已经关联的无线客户端的认证信息。 AP operation information has been associated with an AC transmitted to the new target AC, including wireless client MAC address of the AP name, AP network configuration information (IP address and MAC address), corresponding to the AP the WLAN configuration, it has been associated with the AP's, AP turn on the wireless client has associated entries, authentication information of the wireless clients on the AP has been associated. 目标AC得到这些信息后可以让最终的无线用户业务无缝隙地切换。 After the goal AC can get this information for end users of wireless services seamlessly switched. 这里有个前提条件是已经关联的AC和目标AC经过集群管理后,所有的WLAN配置都是相同的。 Here is a prerequisite for AC and AC has been associated with the target after cluster management, all the WLAN configuration are the same.

[0082] 请参阅附图14,特定AP的切换AC操作可以由AC发起,本优选实施例中,所述的特定AP是指该AP具备某些特有功能,必须挂载到指定的AC。 [0082] Refer to FIG. 14, particular AP AC switching operation can be initiated by AC, in the present preferred embodiment, said AP is meant that the particular AP includes some unique features that must be mounted to the specified AC. 在这一优选技术方案中,所述步骤S500中,特定无线接入点的切换无线控制器的操作由无线控制器发起,包括以下步骤: In this preferred aspect, the step S500, the switching operation of the wireless controller particular wireless access point is initiated by the wireless controller, comprising the steps of:

[0083] S521 :无线接入点接收目标无线控制器的响应报文; [0083] S521: the wireless access point receives a response to the target radio packet controller;

[0084] S522:在目标无线控制器负载过多情况下,无线接入点发起切换无线控制器通告, 接着转入步骤S523 ; [0084] S522: the target radio controller excessive load case, the wireless access point to initiate the wireless controller switching announcement, then proceeds to step S523;

[0085] S523:无线接入点发起加入新目标无线控制器,请求新目标无线控制器应答加入请求; [0085] S523: initiate a wireless access point to a new destination radio controller, the controller to request a new destination radio transponder join request;

[0086] 已经关联的目标无线控制器向新目标无线控制器传递无线接入点运行信息,接着转向S524 ; [0086] Wireless controller associated with the target wireless access point operational information is transmitted to a new destination radio controller, then turn S524;

[0087] S524 :结束 [0087] S524: End

[0088] 其中,AP周期性的接收响应报文,每30秒钟响应一次报文,也即AC每30秒向AP 发送一次报文,该周期性正好满足本发明明的实时负载均衡的要求。 [0088] wherein, AP periodically received response packet, the response packet every 30 seconds, i.e. to the AP sent by the AC packets every 30 seconds, just to meet the periodic clearly present the requirements of real-time load balancing .

[0089] 所述的响应报文为CAPWAP协议的控制报文,包括:IP报文头部、UDP报文头部、 CAPWAP报文头部、CAPWAP控制层和消息内容。 [0089] The response packet is a control packet CAPWAP protocol, comprising: IP packet header, UDP packet header, packet header CAPWAP, control layer and CAPWAP message content. 在集群管理通道上传输的报文格式为CAPWAP 协议的控制报文,这样可以继承CAPWAP通道的一些优点,包括可以穿越NAT设备、可选加密保护、报文序列控制防止乱序传输等。 Transmitted on the channel cluster management packets in the CAPWAP protocol control packets, so can inherit some of the advantages CAPWAP channels, including the NAT traversal can be optionally encrypted, the packet sequence control scrambled to prevent transmission. CAPWAP协议基于IP和UDP协议之上,反过来说CAPffAP报文首先是一个IP和UDP报文。 CAPWAP protocol is based on IP and UDP protocols, on the other hand CAPffAP first packet is an IP and UDP packets. 请参阅附图7,图中表示了集群管理通道报文格式。 See Figure 7, there is shown a cluster management channel message format. 其中,所述的消息内容应用TLV格式表示,包括:AC名称、厂商信息、位置信息、负载信息和AP运行信息。 Wherein the application content TLV message format, comprising: AC name, vendor information, location information, loading information, and operation information AP. 对于消息内容的格式,请参阅附图8,列举了AC名称的消息内容的格式。 For the format of the message content, see Figure 8, lists the format of the message content AC name.

[0090] 请参阅附图15,本发明公开了一种集群管理和动态负载均衡的系统,该系统应用上述集群管理和负载均衡的实现方法,包括无线接入点和无线控制器; [0090] Refer to FIG. 15, the present invention discloses a cluster management and dynamic load balancing system applying the method of cluster management and implementation of load balancing, including a wireless access point and the wireless controller;

[0091] 所述无线接入点包括:无线用户信息收集模块、无线控制器信息收集模块、无线控制器选择加入模块和MIMO天线;所述MIMO天线与无线用户信息收集模块的输入端相连,无线用户信息收集模块的输出端与无线控制器选择加入模块的第一输入端相连,无线控制器信息收集模块的输出端与无线控制器选择加入模块相连的第二输入端相连;无线用户信息收集模块用于收集自身的运行数据,无线控制器信息收集模块用于收集目标的负载信息, 无线控制器选择加入模块用于选择切换新目标;所述无线控制器包括:无线控制器负载通告模块、无线控制器负载统计模块和集群管理模块;所述无线控制器负载统计模块输出端与所述集群管理计算模块的输入端相连,集群管理计算模块的输出端与无线控制器负载通告模块的输入端相连;无线控制器选择加入模块的输 [0091] The wireless access point comprising: a wireless subscriber information collection module, the wireless controller module to collect information, and the wireless controller module opt MIMO antenna; MIMO antenna connected to the input terminal information collection module of a wireless subscriber, wireless the output of the user information collection module and the wireless controller module opt first input terminal, the output terminal of the radio controller information collection module is connected to the wireless controller selects the second input terminal connected to the module added; wireless user information collecting module collecting operational data for itself, the controller radio information collecting means for collecting load information of the target wireless controller selection switching means for selecting Add new target; the radio controller comprising: a wireless controller module load announcement, radio the controller module and cluster load statistics management module; the wireless controller module load statistics output terminal and the input terminal of the computing cluster management module is connected, an output terminal connected to the input cluster management module and the wireless controller calculates a load of the announcement module ; join the wireless controller module selection input 出端与无线控制器负载统计模块的输入端相连,无线控制器负载通告模块的输出端与无线控制器信息收集模块的输入端相连; 所述无线控制器负载通告模块向相邻无线控制器通告负载信息,无线控制器负载统计模块统计自身的负载数量,所述集群管理模块用于建立集群管理通道。 An input terminal connected to the wireless controller module, load statistics, a load connected to the output access controller announcement module to an input terminal of the radio controller information collection module; the wireless controller module load advertisement announcement to neighboring wireless controller load information, the wireless controller module load statistics counting the number of the load itself, the cluster management module for establishing a cluster management channel.

[0092] 本发明综合考虑了集中式无线局域网的特点,提出在现有的网络拓扑里集群管理网络设备和动态负载均衡的方法并且公开一种集群管理和动态负载均衡的系统。 [0092] The present invention considers the characteristic of centralized wireless LAN, and network devices proposed dynamic management method of load balancing in a cluster in the conventional network topologies and discloses a cluster management system, and dynamic load balancing. 本发明的技术方案,合理利用无线局域网的设备处理资源,特别是多个无线控制器的并发处理能力的最大化,不增加网络设备的硬件成本,通过软件升级就可以让所述的技术方案得到实施。 Aspect of the present invention, the rational use of device processing resources of the wireless local area network, in particular to maximize the concurrent processing of a plurality of wireless controllers, without increasing the cost of the network hardware devices, software upgrades can be obtained so that the aspect implementation. 此外,本技术方案对无线移动终端的网络连接透明,设备网络连接的切换过程对用户上网影响最小化,同时达到了多个无线网络控制器部署情况下的设备之间冗余备份的效果。 Further, the present aspect of a wireless mobile terminal connected to the network transparent handover procedure of the user equipment connected to the Internet network impact minimized while achieving the effect of the redundancy backup between a plurality of devices under the deployment of the radio network controller. AC 间通过集群管理通道周期性的交换负载信息,以让无线局域网系统能够实时的指导各个AC 当前负载。 Cluster management channel between the AC through periodic exchange of load information to make real-time wireless LAN system can guide the individual AC current load. AP在加入无线局域网的过程,根据获得的各个AC负载信息选择和相应的AC关联。 During the addition of the wireless LAN AP, the individual AC load information and select corresponding AC obtained according to correlation. AP在运行过程,能够根据各个AC负载信息自动切换到负载较轻的AC上,从而使各个AC上的负载达到均衡。 AP During operation, can automatically switch an AC load in accordance with various information onto lightly loaded AC, so that the load on each AC equilibrium.

[0093] 以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。 [0093] Other related art technologies described above are only embodiments of the present invention, not intended to limit the scope of the present invention, all utilize the present specification and drawings taken transform equivalent structures, or applied directly or indirectly shall fall within the scope of protection of the present invention.

Claims (10)

  1. 1. 一种集群管理和负载均衡的实现方法,其特征在于,包括以下步骤:SlOO :相邻无线控制器间建立集群管理通道,通过该通道周期性交换负载信息; S200 :无线接入点挂载到负载较轻的无线控制器,即为无线接入点的目标无线控制器;S300 :无线接入点请求目标无线控制器发送响应报文;S400 :目标无线控制器响应无线接入点的请求,并向无线接入点发送响应报文; S500 :无线接入点接收并分析响应报文,分析目标无线控制器是否负载过多,若是,则发起切换目标无线控制器请求;若否,则无线接入点不切换目标无线控制器,转S300 ; S600 :无线接入点切换到负载较小的新目标无线控制器上; S700 :结束。 A cluster management and implementation of load balancing, characterized in comprising the steps of: SlOO: adjacent channel established between the access controller cluster management, load information periodically exchanged through the channel; S200: the wireless access point linked to lighter load carrier to the wireless controller, the wireless access point of the target radio controller; S300: the target radio access point controller transmits a request response packet; S400: the target radio controller in response to the wireless access point request, the wireless access point and sends a response message; S500: the wireless access point receives and analyzes the response packet, the destination radio controller analyzes whether the load is too large, and if yes, initiating a handover request to the target radio controller; if not, the wireless access point does not handover target radio controller, switch S300; S600: the wireless access point is switched to the smaller load new target radio controller; S700: end.
  2. 2.根据权利要求1所述的集群管理和负载均衡的实现方法,其特征在于,所述步骤SlOO建立集群管理通道包括:发现过程和协商过程;发现过程:无线控制器根据系统管理的配置信息向相邻无线控制器发送建立通道请求,相邻无线控制器接收到请求后作出应答,建立集群管理通道;协商过程:无线控制器统计自身的负载数量,并与相邻无线控制器AC交换负载信息, 并将负载数量相比较,选出无线接入点负载数量最少的无线控制器。 The cluster management and implementation of load balancing method according to claim 1, wherein said establishing step SlOO cluster management channel comprising: discovery and negotiation processes; discovery process: The configuration information of the wireless controller system management send to a neighboring wireless controller establishes a channel request, adjacent respond after wireless controller receives a request to build a cluster management channel; negotiation process: the wireless controller counting the number of load itself, and the neighboring wireless controller AC load switching information, and comparing the number of loads, a minimum number of selected wireless access point load controller.
  3. 3.根据权利要求2所述的集群管理和负载均衡的实现方法,其特征在于,所述的负载信息包括:对应无线控制器的无线接入点容量、当前关联的无线接入点数量、无线客户端容量、当前管理的无线客户端数量、转发吞吐能力流量、当前正在转发的流量。 3. The method of cluster management and implementation of the second load balancing according to claim, wherein the load information comprises: a wireless controller corresponding to the capacity of a wireless access point, the number of current associated with the wireless access point, a radio client capacity, the number of wireless clients currently managing, forwarding traffic handling capacity, is currently being forwarded traffic.
  4. 4.根据权利要求1或2所述的集群管理和负载均衡的实现方法,其特征在于,所述集群管理通道的建立过程应用无线接入点控制与配置协议。 The cluster management method and the implement load balancing 1 claim, wherein said cluster management channel establishment procedure of the wireless access point control application configuration protocol.
  5. 5.根据权利要求1所述集群管理和负载均衡的实现方法,其特征在于,目标无线控制器负载过多的情况下,所述步骤S500包括:5511 :无线接入点接收目标无线控制器发送的响应报文,得知目标无线控制器已负载;5512 :无线接入点发起切换无线控制器挂载点请求;5513 :已经关联的目标无线控制器是否接受请求,若拒绝,则转向S514,若接受,则转入S516 ;5514 :无线接入点发起加入新目标无线控制器请求,新目标无线控制器应答加入请求, 并分析是否让无线接入点加入该无线控制器,若是,则转S515 ;若否,则循环S514 ;5515 :已经关联的目标无线控制器向新目标无线控制器传递无线接入点的运行信息;5516 :结束。 The cluster management and load balancing implemented method of claim 1, wherein the target wireless controller excessive load condition, comprising the step S500: 5511: a wireless access point receives a certain radio transmission controller the response packet, the destination radio controller that has a load; 5512: the wireless access point to initiate a handover request to the wireless controller mount point; 5513: wireless controller associated with certain whether to accept the request, if rejected, then go to S514, if accepted, the process proceeds to S516; 5514: launch a wireless access point wireless controller requests to add a new target, a new target wireless controller acknowledges the request to join, and analyze whether to allow wireless access point to join the wireless controller, and if so, turn S515; if not, the loop S514; 5515: wireless controller associated with certain operating information is transmitted to the new wireless access point destination radio controller; 5516: end.
  6. 6.根据权利要求1所述的集群管理和负载均衡的实现方法,其特征在于,所述步骤S500中,特定无线接入点的切换无线控制器的操作由无线控制器发起,包括以下步骤:5521 :无线接入点接收目标无线控制器的响应报文;5522 :在目标无线控制器负载过多情况下,无线接入点发起切换无线控制器通告,接着转入步骤S523 ;5523 :无线接入点发起加入新目标无线控制器,请求新目标无线控制器应答加入请求;已经关联的目标无线控制器向新目标无线控制器传递无线接入点运行信息,接着转向S524 ;S524 :结束。 The cluster management and load balancing implemented method according to claim 1, wherein, in said step S500, the switching operation of the wireless controller particular wireless access point is initiated by the wireless controller, comprising the steps of: 5521: the wireless access point receives a response packet destination radio controller; 5522: the target radio controller excessive load case, the wireless access point to initiate the wireless controller switching announcement, then proceeds to step S523; 5523: radio access initiating point to a new destination radio controller, the controller to request a new destination radio transponder join request; target radio controller has an associated wireless access point operational information is transmitted to a new destination radio controller, then turn S524; S524: end.
  7. 7.根据权利要求5或6所述的集群管理和负载均衡的实现方法,其特征在于:无线接入点周期性的接收响应报文。 The cluster management and 5-implemented method of claim 6 or claim load balancing, wherein: the wireless access point periodically receives the response packet.
  8. 8.根据权利要求1或5或6所述的集群管理和负载均衡的实现方法,其特征在于,所述的响应报文为无线接入点控制与配置协议的控制报文,包括:IP报文头部、UDP报文头部、 CAPffAP报文头部、CAPffAP控制层和消息内容。 The cluster management and implementation 1 or claim 5 or claim 6 load balancing, wherein the response packet is a control packet wireless access point configuration control protocol, comprising: IP packet packet headers, UDP packet header, CAPffAP packet header, CAPffAP control layer and a message content.
  9. 9.根据权利要求8所述的集群管理和负载均衡的实现方法,其特征在于,所述的消息内容应用TLV格式表示,包括:无线控制器名称、厂商信息、位置信息、负载信息和无线接入点运行信息。 9. The method of cluster management and implementation of the load balancing according to claim 8, characterized in that the message content application TLV format, comprising: a wireless controller name, vendor information, location information, loading information, and radio access point run information.
  10. 10. 一种集群管理和动态负载均衡的系统,其特征在于,包括无线接入点和无线控制器;所述无线接入点包括:无线用户信息收集模块、无线控制器信息收集模块、无线控制器选择加入模块和MIMO天线;所述MIMO天线与无线用户信息收集模块的输入端相连,无线用户信息收集模块的输出端与无线控制器选择加入模块的第一输入端相连,无线控制器信息收集模块的输出端与无线控制器选择加入模块相连的第二输入端相连;无线用户信息收集模块用于收集自身的运行数据,无线控制器信息收集模块用于收集目标的负载信息,无线控制器选择加入模块用于选择切换新目标;所述无线控制器包括:无线控制器负载通告模块、无线控制器负载统计模块和集群管理模块;所述无线控制器负载统计模块输出端与所述集群管理计算模块的输入端相连,集群管理计算模块 A cluster management and dynamic load balancing system, comprising a wireless access point and the wireless controller; the wireless access point comprising: a wireless subscriber information collection module, the wireless controller module collection information, the radio control Add selection module and a MIMO antenna; an input terminal connected to the MIMO antenna and the wireless subscriber information collection module, the output of the wireless subscriber information collection module is connected to the wireless controller selects the first input terminal of the module is added, the wireless controller information gathering output terminal and the wireless controller module selects the second input terminal connected module is connected added; wireless subscriber information collection module for collecting operating data itself, the information collected by the wireless controller module is configured to collect load information of the target radio controller selects Add new switching means for selecting a target; the radio controller comprising: a wireless controller module announcement load, load statistics module and the wireless controller module cluster management; the wireless controller module load statistics output terminal and the computing cluster management an input terminal connected to the module, calculating cluster management module 输出端与无线控制器负载通告模块的输入端相连;无线控制器选择加入模块的输出端与无线控制器负载统计模块的输入端相连,无线控制器负载通告模块的输出端与无线控制器信息收集模块的输入端相连;所述无线控制器负载通告模块向相邻无线控制器通告负载信息,无线控制器负载统计模块统计自身的负载数量,所述集群管理模块用于建立集群管理通道。 An input terminal connected to the output terminal and the wireless controller module advertised load; wireless controller selects the output terminal and the wireless controller module added load statistics module input terminal, the output terminal of the radio controller and the radio announcement module load information collection controller an input terminal connected to the module; the wireless controller module to load advertisement announcement load information of neighboring wireless controller, a wireless controller module load statistics counting the number of the load itself, the cluster management module for establishing a cluster management channel.
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