Power Efficient Relaying MAC Protocol for Rate Adaptive Wireless LANs

Authors:
Jaeeun Na;Yeonkwon Jeong;Joongsoo Ma
Affiliations:
School of Engineering, Information and Communications University, Daejeon, 305-732, Korea;School of Engineering, Information and Communications University, Daejeon, 305-732, Korea;School of Engineering, Information and Communications University, Daejeon, 305-732, Korea
Venue:
ICESS '07 Proceedings of the 3rd international conference on Embedded Software and Systems
Year:
2007

Citing 2
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Abstract

To exploit multi-rate capability as well as improve performance in wireless networks, many relaying mechanisms are proposed on IEEE 802.11 media access control (MAC) layer. However, no effort has been invested to exploit the multi-rate capability for power saving mechanism in MAC. In this paper, we propose a Power Efficient Relaying MAC Protocol, called PERP, to achieve both performance improvement and power saving by leveraging the multi-rate capability. In proposed relaying scheme, if a node can support low rate node's packet at higher rate and has sufficient power, after voluntarily helping data transmission at higher rate, all nodes go into sleep mode as quickly as possible to reduce power consumption. Simulation results show that the PERP improves throughput by 30~50% as well as reduces power consumption and transmission delay by 10~55% than the legacy mechanism.