An adaptive directional MAC protocol for ad hoc networks using directional antennas |
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Authors: | LU XiaoFeng TOWSLEY Don LIO Pietro & XIONG Zhang |
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Affiliation: | 1 School of Computer Science,Beijing University of Posts and Telecommunications,Beijing 100876,China;2 Deptartment of Computer Science,University of Massachusetts,Amherst 01003,USA;3 Computer Laboratory,University of Cambridge,Cambridge CB 3 0FD,United Kingdom;4 School of Computer Science,Beihang University,Beijing 100191,China |
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Abstract: | A directional antenna can bring benefits in terms of power consumption,spatial reuse,etc.To exploit the advantage of directional antennas and improve the transmission throughput highest,this paper proposes an adaptive directional MAC protocol(ADMAC).By varying the transmission strategy according to the usage of the channel,nodes can send RTS and CTS packets omni-directionally or directionally.Also,this paper proposes a calculation method of virtual carrier sensing with collision avoidance.By the method,ADMAC protocol makes more pairs of nodes transmit and receive data simultaneously without interferences than other MAC protocols for directional antennas.The paper compares the simultaneous delivering nodes and network throughput of ADMAC with DMAC,DVCS and SDMAC under different experiment parameters.The simulation results show that the throughput of ADMAC is higher than the throughput of DMAC,DVCS and SDMAC protocols. |
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Keywords: | medium access control directional MAC directional antennas MANETs |
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