Issue No.04 - April (2012 vol.11)
Tie Luo , Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Vikram Srinivasan , Bell Labs. Res., Bangalore, India
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TMC.2011.60
Distributed Information SHaring (DISH) is a new cooperative approach to designing multichannel MAC protocols. It aids nodes in their decision making processes by compensating for their missing information via information sharing through neighboring nodes. This approach was recently shown to significantly boost the throughput of multichannel MAC protocols. However, a critical issue for ad hoc communication devices, viz. energy efficiency, has yet to be addressed. In this paper, we address this issue by developing simple solutions that reduce the energy consumption without compromising the throughput performance and meanwhile maximize cost efficiency. We propose two energy-efficient strategies: in-situ energy conscious DISH, which uses existing nodes only, and altruistic DISH, which requires additional nodes called altruists. We compare five protocols with respect to these strategies and identify altruistic DISH to be the right choice in general: it 1) conserves 40-80 percent of energy, 2) maintains the throughput advantage, and 3) more than doubles the cost efficiency compared to protocols without this strategy. On the other hand, our study also shows that in-situ energy conscious DISH is suitable only in certain limited scenarios.
energy conservation, access protocols, ad hoc networks, cooperative communication, cost efficiency maximization, energy-efficient strategy, cooperative multichannel MAC protocols, distributed information sharing, decision making process, missing information, neighboring nodes, ad hoc communication device, energy efficiency, energy consumption, throughput performance, Protocols, Peer to peer computing, Receivers, Throughput, Sleep, Switches, Mobile computing, wireless ad hoc networks., Control-plane cooperation, altruistic DISH, in-situ energy conscious DISH
Tie Luo, Vikram Srinivasan, "Energy-Efficient Strategies for Cooperative Multichannel MAC Protocols", IEEE Transactions on Mobile Computing, vol.11, no. 4, pp. 553-566, April 2012, doi:10.1109/TMC.2011.60