A rate-adaptive MAC protocol for multi-Hop wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Opportunistic media access for multirate ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
MiSer: an optimal low-energy transmission strategy for IEEE 802.11a/h
Proceedings of the 9th annual international conference on Mobile computing and networking
Hybrid rate control for IEEE 802.11
Proceedings of the second international workshop on Mobility management & wireless access protocols
rDCF: A Relay-Enabled Medium Access Control Protocol for Wireless Ad Hoc Networks
IEEE Transactions on Mobile Computing
A power control MAC protocol for ad hoc networks
Wireless Networks
Low-overhead channel-aware rate adaptation
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Power Efficient Relaying MAC Protocol for Rate Adaptive Wireless LANs
ICESS '07 Proceedings of the 3rd international conference on Embedded Software and Systems
CoopMAC: A Cooperative MAC for Wireless LANs
IEEE Journal on Selected Areas in Communications
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Strategies for achieving high communication throughput and efficient energy saving are research hot spots in the area of mobile ad hoc networks (MANETs). Most previous works focus only on one of the optimization goals. This paper primarily contributes a Multi-Rate Medium Access Control (MAC) protocol (MR-MAC) operating in the 802.11g environment. This protocol economizes on energy for low traffic scenarios and maintains high throughput under heavy traffic conditions. MR-MAC utilizes rate adaption and estimation of channel occupation time, thus enabling it to choose a transmission rate which satisfies the requirement of each flow. In doing so, it efficiently lowers the power consumption caused by an unnecessary high transmission rate. Another significant contribution of this paper is the Cooperative Multi-Rate MAC protocol (CMR-MAC) which balances power consumption while ensuring energy efficiency. The main idea of CMR-MAC is the active acceleration of the high energy nodes' transmission rate within the area surrounding a low-energy node. This reduces channel occupation time which, in turn, helps the low energy nodes save energy. Simulation results show that MR-MAC outperforms Receiver-Based Auto-Rate (RBAR) by 40% in terms of energy efficiency, yet maintains a comparable throughput with the latter. Meanwhile, CMR-MAC is about 20% to 30% superior to MR-MAC in network lifetime and total number of delivered packets, respectively.