WLAN接入GPRS核心网的认证机制

Authentication Mechanism for the Access of Wireless LAN into GPRS Core Network

无线局域网和移动运营商网络结合起来,利用现有GPRS核心网强大的管理功能和漫游能力,可以拓展无线局域网的业务范围。这一方案中,只有控制信息被传输到移动核心网,而用户数据直接通过IP骨干网传输,这样可以极大地缓解无线数据业务对移动核心网的负荷。如何利用IP机制将移动用户认证信令从终端传到核心网是设计的难点。本文着重分析认证机制及其相关协议。

This paper describes a new wireless LAN system architecture that combines the wireless LAN radio access technology with GPRS core network's management functions and roaming infrastructure. In this architecture only the control signaling is transmitted to the mobile core network, while user data is directly transmitted to the IP backbone. The main design challenge is to transport standard GSM subscriber authentication signaling from the terminal to the GPRS core using the IP protocol framework. An authentication scheme and the relative protocols are analyzed also.