Incorporating 3G Networks in Wireless Environments

Abstract

The third generation (3G) cellular networks provide ubiquitous connectivity but low data rates, whereas wireless local area networks (WLANs) can offer much higher data rates but only cover smaller geographic areas. Their complementary characteristics make the integration of the two networks a promising trend for next-generation wireless networks. With combined strengths, the integrated networks will provide both wide-area coverage and high-rate data services in hotspots. There are many aspects involved in their interoperability, such as mobility, security, and quality of service (QoS) provisioning. In this article, we present a survey of most recent interoperability mechanisms proposed in the literature, and outline some important open issues to achieve seamless integration.

Keywords: 3G/WLAN interoperability; tight/loose coupling; mobility management; QoS provisioning.