Design of Wireless LAN Applicative Solution for Internetworking with Public Land Mobile Networks

Public Land Mobile Networks (PLMN) of 2.5 and 3rd generation of- fer Internet connectivity and IP-based services on wide coverage areas, but they lack bandwidth for demanding applications. On the other side, Wireless LANs (WLAN) offers many times higher data rates compared to cellular networks, but they can cover only small area spots. This situation leads to the requirement for internetworking between PLMN and WLAN, where WLAN shall be used to cover dense city areas called hotspots. In this paper we describe the design of our applicative solution for internetworking between PLM N and WLAN based on integrated authentication and accounting system. For such purpose we have developed two additional network nodes called WLAN Access Controller and WLAN Authentication, Authorization, and Accounting (AAA) Gateway. The developed applicative solution is targeted to provide cost-effective integration solution that is suitable for mobile operators that want to offer a WLAN service and to charge for its usage.

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