The multicast capacity of large multihop wireless networks
Networking, IEEE/ACM Transactions(2010)
摘要
We consider wireless ad hoc networks with a large number of users. Subsets of users might be interested in identical information, and so we have a regime in which several multicast sessions may coexist. We first calculate an upper bound on the achievable transmission rate per multicast flow as a function of the number of multicast sources in such a network. We then propose a simple comb-based architecture for multicast routing, which achieves the upper bound in an order sense under certain constraints. Compared to the approach of constructing a Steiner tree to decide multicast paths, our construction achieves the same order-optimal results while requiring little location information and no computational overhead.
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关键词
steiner tree,asymptotic capacity,multicast path,multicast flow,multicast routing,achievable transmission rate,ad hoc wireless networks,identical information,location information,multicast flows,large multihop wireless network,large number,multicast capacity,multicast source,multicast session,wireless ad hoc network,pediatrics,unicast,mobile ad hoc networks,throughput,steiner trees,wireless networks,upper bound,ad hoc wireless network
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