Effective Video Multicast Using SVC with Heterogeneous User Demands over TDMA-Based Wireless Mesh Networks

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We provide an effective video multicast framework over time division multiple access (TDMA)-based wireless mesh networks (WMNs). Heterogeneous user demand is considered where each multicast receiver has its own video quality demand. In video multicasting, different relay nodes in the same multicast tree may have different transmission rates by utilizing scalable video coding (SVC). Considering this distinguishing characteristic of video multicasting, the proposed multicast framework provides effective multicast routing, scheduling, and rate allocation algorithms. The purpose of the multicast routing and scheduling is to obtain a minimum length schedule which satisfies given quality demands of receivers. If the schedule is not feasible even with its minimum length due to the limited number of time slots in the network, rate allocation algorithm adjusts the transmission rates of relay nodes to generate a feasible schedule. The algorithm is designed to maximize the minimum utility of multicast receivers. Simulation results show that the proposed multicast routing and scheduling algorithms outperform existing schemes in terms of schedule length. The minimum utility is improved up to 30 percent by the proposed rate allocation algorithm compared to the existing method.
Publisher
IEEE COMPUTER SOC
Issue Date
2013-05
Language
English
Article Type
Article
Keywords

AD HOC NETWORKS; BROADCAST; ALGORITHMS; LATENCY

Citation

IEEE TRANSACTIONS ON MOBILE COMPUTING, v.12, no.5, pp.984 - 994

ISSN
1536-1233
DOI
10.1109/TMC.2012.70
URI
http://hdl.handle.net/10203/174039
Appears in Collection
IE-Journal Papers(저널논문)
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