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The authors propose and analyze a Hierarchical Agent-based Secure Multicast (HASM) algorithm for efficiently supporting secure mobile multicast in wireless mesh networks, with design considerations given to minimize the overall network cost incurred by multicast packet delivery, mobility management, security key management, and group membership maintenance. HASM dynamically maintains a group of multicast agents running on mesh routers for integrated mobility and multicast service management and leverages a hierarchical multicast structure for efficient multicast packet delivery. The regional service size of each multicast agent is a key design parameter.
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