Wireless multicast: Theory, approaches and protocols
Abstract
Bandwidth and energy-efficiency of wireless multicast can be substantially improved by exploiting the feature that a single transmission can be intercepted by several receivers at the MAC layer. The multicast nature of transmissions, however, changes the fundamental relations between the QoS parameters, throughput, stability loss and delay, e.g., a strategy that maximizes the throughput does not necessarily maximize the stability region or minimize the packet loss. The design of efficient transmission strategies needs the resolution of decision problems and protocol challenges that are not encountered in wireline or wireless unicast or even in wireline multicast. We explore the trade-offs between the QoS parameters, and present optimal transmission strategies that provably maximize the throughput subject to stability and loss constraints. The optimal strategies are adaptive, online, and easy-to-implement, yet attain the same performance as optimal offline and static strategies that assume in their decision process the knowledge of future packet arrivals and channel conditions. We also design policies that minimize packet delay subject to the loss constraint. We present MAC protocols that implement the optimal strategies. We demonstrate using analysis, numerical performance evaluation and simulation that the MAC protocols significantly outperform the existing approaches.
Recommended Citation
Prasanna Suresh Chaporkar,
"Wireless multicast: Theory, approaches and protocols"
(January 1, 2006).
Dissertations available from ProQuest.
Paper AAI3246145.
http://repository.upenn.edu/dissertations/AAI3246145
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