A hierarchical multicast protocol in mobile IPv6 networks

Authors:
Ping Wang;Yunze Cai;Jinjie Huang;Xiaoming Xu
Affiliations:
Department of Computer Science and Engineering, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, China;Department of Automation, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, China;Department of Automation, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, China;Department of Automation, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, China and University of Shanghai for Science and Technology, Shanghai 200093, China
Venue:
Computer Communications
Year:
2006

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Abstract

In this paper, we propose a hierarchical multicast protocol in Mobile IPv6 networks (HMoM), which utilizes the advantages of hierarchical mobility management in handling unicast routing. The multicast agent is selected dynamically and can be located at any level in a hierarchical network of routers according to the handoff frequency of mobile hosts (MHs). Thus, it can offer the most efficient routing for the MHs that reside at a network for a relatively long period of time, and avoid frequent tree reconstruction for the MHs that perform handoff quickly. Actually, we find that remote subscription, bidirectional tunneling, which proposed by the IETF Mobile IP, and unicast mechanism are the special cases of hierarchical mobile multicast. In addition, we propose a smooth multicast agent handoff mechanism to reduce the disruption of multicast services due to host mobility. A detailed performance evaluation has been done and simulation results show that HMoM has better performance than existing protocols.