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Live video multicasting over wireless ad hoc networks is a tough problem due to the restricted computational ability of the mobile devices and non-predictive networks status. In this paper, we propose MoViF, a lower power consumption multicasting framework for live video multicasting over ad-hoc networks. The proposed MoViF adopts distributed video coding (DVC) scheme and, as a result, enjoys all the benefits of DVC such as lightweight encoder and built-in error resilient capability. Moreover, MoViF manages to apply an elegant strategy to minimize the overall power consumption for all the receivers while improving their decoding quality by dynamically assign the tasks of aid information extraction to some intermediate powerful nodes in the multicast tree. Simulation results demonstrate that the optimal strategy can lower down the overall power consumption comparing to the random strategy.
Date of Conference: 13-16 Dec. 2005