Efficient multimedia call delivery over IP-based heterogeneous wireless access networks

Authors:
Peyman TalebiFard;Victor C.M. Leung
Affiliations:
The University of British Columbia, Vancouver, BC, Canada;The University of British Columbia, Vancouver, BC, Canada
Venue:
Proceedings of the 6th ACM international symposium on Mobility management and wireless access
Year:
2008

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Abstract

Next generation of heterogeneous wireless access networks are expected to interwork with IP-based infrastructures. The existing call delivery approaches in cellular networks may not be well suited for future communication systems because they suffer from unnecessary usage of network resources for call attempts that may fail which adds to excessive signaling delays and queuing costs. As a result, heavy load will be imposed on the network for the case of multimedia calls. The future users of communication systems will subscribe to both Internet Protocol (IP)-based and Circuit Switched (CS) based services and in the foreseeable future a single database that handles user profiles across all domains will be required. Hence, the number of queries and retrievals from the database will have a significant impact on the network performance. We present a new scheme based on Reverse Virtual Call setup (RVC) as a solution to the call delivery problem in heterogeneous wireless networks and demonstrate the performance of this framework in terms of signaling cost and delay.