Evaluation of interoperability mechanisms for coexisting HSDPA and WLAN enhanced with MTMR techniques

Concept for 4G systems can be seen as the seamless inter-working between existing and 3G radio networks providing the user with a wide variety of services, while maintaining a large area of coverage and minimum user QoS requirements. This paper investigates interoperability between HSDPA and WLAN systems by proposing some pertinent criteria issued from cost functions for both initial user assignment and inter-system handover. Performance characterization is assessed through scenarios using a simulation platform enhanced with multiple transmit and multiple receive (MTMR) techniques.