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GLOBECOM
2009
IEEE

LA-MAC: A Load Adaptive MAC Protocol for MANETs

13 years 10 months ago
LA-MAC: A Load Adaptive MAC Protocol for MANETs
—The performance of prevalent MAC protocols in MANETs relies on the level of contention in networks. While contention-based MAC protocols such as CSMA suffer from inefficiency under high contention, slot-based MAC protocols such as TDMA perform in the opposite way. In this paper, we propose a hybrid protocol to which we refer as LoadAdaptive MAC (LA-MAC) protocol for MANETs. By adaptively switching its running mode between CSMA and TDMA, LAMAC achieves high channel utilization under both high and low contention. We report our implementation of LA-MAC on a MANET testbed formed by a collection of Multiple-Input Multiple-Output (MIMO) Universal Software Radio Peripheral (USRP) software defined radio nodes. We program the PHY layer of USRP nodes using GNU Radio and integrate LA-MAC with the PHY layer implementation of USRP. Through experimental studies, we demonstrate the performance improvements of LAMAC relative to CSMA and TDMA.
Weihong Hu, Xiaolong Li, Homayoun Yousefi'zadeh
Added 21 May 2010
Updated 21 May 2010
Type Conference
Year 2009
Where GLOBECOM
Authors Weihong Hu, Xiaolong Li, Homayoun Yousefi'zadeh
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