WLAN统一接入平台的研究与实现

The Research and Implementation of a Unified Access Platform Based on WLAN

采用"瘦AP"无线体系结构,由"AC"中心进行统一管理及无线网络维护、用户定位,以802.11n为标准,支持无线漫游,面向智能终端,每个终端AP承载5个SSID(CMCC、CMCC-EDU、ChinaNet、Unicom、HUTC)信号,由楼层交换机配置统一的AP专用VLAN,将AP数据接收后传送至AC中心,AC中心的控制系统根据SSID的不同,将数据分送至各自(运营商、学校)的认证计费系统,其中,运营商的认证服务器分出一条支线,将访问学校内网的数据发往学校内网。据此,教工使用学校自己的SSID,进入学校内网后由学校的总出口访问互联网,可免费上网;学生自由选择无线网络服务运营商,自费使用无线网络,同时免费访问学校内网。

For a fit AP mode networking, the campus network is managed uniformly by the AC center ao well as its maintenance and user positioning. The network is based on 802. 11 n Standard, and supports wireless roaming. It is intelligent and terminal-oriented. 5 SSID signals （including CMCC, CMCC-EDU, ChinaNet, Unicorn and HUTC） are carried by each terminal. According the characteristics of SSIDs, the control syste, m of AC center dispatches the data to the authentication and accounting system of ISPs or college networks. The authentication servers of ISPs then setup a branch line to send the data packets to the school intranet. Accordingly, the staff use the SSID of the school to acc, ess the intranet of the school and visit the internet through the network egress of the school, while the students could choose data services from wireless ISPs at their own expense and access the school intranet free of charge simuhaneously.