Title :
MAC protocol for mobile ad hoc network with smart antennas
Author :
Yang, Jun ; Li, Jiandong ; Sheng, Min
Author_Institution :
Inf. Sci. Inst., Xidian Univ., Xi´´an, China
fDate :
3/20/2003 12:00:00 AM
Abstract :
A novel MAC protocol for a mobile ad hoc network with smart antennas $adaptive beamforming CSMA/CA protocol (ABF-CSMA/CA) - is presented. In ABF-CSMA/CA, training sequences are transmitted just before request-to-send (RTS) and clear-to-send (CTS) packets, so the temporal reference beamforming can be performed. An improved virtual carrier-sense mechanism is also proposed. In this scheme, every node has two kinds of network allocation vector (NAV) - omnidirectional NAV (oNAV) and beamforming NAV (WAV). Simulation results show that ABF-CSMA/CA can support smart antennas effectively and provide higher channel utilisation.
Keywords :
ad hoc networks; adaptive antenna arrays; array signal processing; carrier sense multiple access; mobile radio; sequences; MAC protocol; adaptive beamforming CSMA/CA protocol; beamforming network allocation vector; clear-to-send packets; mobile ad hoc network; omnidirectional network allocation vector; request-to-send packets; smart antennas; temporal reference beamforming; training sequences transmitted; virtual carrier-sense mechanism;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030337
