In this paper, we consider the use of the recently proposed Intra-Domain Mobility Management Protocol (IDMP) in 3rd and 4th generation (3/4G) wireless cellular networks to reduce the latency of intra-domain location updates and the mobility signaling traffic. We first present enhancements to basic IDMP that provide fast intra-domain handoffs by using a duration-limited, proactive packet 'multicasting' scheme. We quantify the expected buffering requirements of our proposed multicasting scheme for typical 3/4G network characteristics and compare it with alternative IP-based fast handoff solutions. We also present a paging scheme under IDMP that replicates the current cellular paging structure. Our paging mechanism supports generic paging strategies and can significantly reduce the mobility-related IP signaling load.
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