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• W2169578726 abstract "This paper introduces a core migration protocol that provides QoS for multicast applications in Mobile Ad hoc Networks. Multicasting is usually accomplished by constructing a multicast tree and transmitting the packets over this tree, replicating packets at the branch points. In a group shared multicast tree, the choice of the root (core) plays an important role in influencing the organization of the tree and affecting the performance of packet delivery. The objective is to construct a tree whose leaves achieve the desired qualities of the multicast application. Existing multicast routing protocols proposed for establishing and maintaining the groupshared tree, like CBT and PIM-SM, ignore the issues of core selection and migration, and are not QoS sensitive. We investigate an algorithm that migrates the core on a hop-by-hop basis to continuously adapt to the network dynamics; and whenever the topology remains constant for a sufficient duration, the core reaches an optimal position which corresponds to the specified QoS. Our algorithm is more practical for mobile ad hoc network environments than other protocols, since it does not rely on topology based metrics and has less overhead. This is accomplished by averaging the specified QoS metric using periodic QoS measurements for packets acknowledged at the current core. We present proofs of correctness to show that our algorithm moves the core toward an optimal position corresponding to the desired QoS. Our work also evaluates the performance of the core migration protocol through simulations." @default.
• W2169578726 created "2016-06-24" @default.
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• W2169578726 date "2004-01-01" @default.
• W2169578726 modified "2023-09-27" @default.
• W2169578726 title "QoS-Aware Core Migration for Efficient Multicast in Mobile Ad hoc Networks" @default.
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• W2169578726 hasPublicationYear "2004" @default.
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