A Study of applying SIP mobility in mobile wiMax network architecture

Abstract

This paper studies cooperation of the ASN anchored mobility and SIP terminal mobility to improve the handoff performance in WiMax network. In addition to integrating the WiMax mobility and SIP mobility procedure by using the B2BUA concept, the proposed scheme investigates the traffic load so that the handoff dropping rate can be reduced. As the B2BUA acts as a proxy to handle the link layer and application layer handoffs, the handoff decision and policy can be performed through heuristic manner. Experimental simulations were performed and the results show that the proposed scheme can effectively utilize the traffic links to achieve the above objective. © 2011 Springer-Verlag Berlin Heidelberg.