Title :
An MAC protocol for wireless ad-hoc networks using smart antennas [an read a]
Author :
Chen, Wen-Tsuen ; Ho, Te-Wei ; Chen, Yen-Cheng
Author_Institution :
Inst. of Commun. Eng., Nat. Tsing-Hua Univ., Hsin-Chu, Taiwan
Abstract :
Directional antennas can be used to increase the spatial reuse of wireless channels in multihop wireless ad hoc networks. However, the use of directional antennas may lead to hidden terminal problems due to unheard RTS/CTS and asymmetry in gain. In this paper, we propose a new MAC protocol using smart antennas to overcome the hidden terminal problems. The proposed scheme uses different antenna patterns and gains in transmitting data and RTS/CTS/ACK frames. Simulation results show that the proposed MAC protocol improves the throughput of multihop wireless LANs.
Keywords :
access protocols; ad hoc networks; adaptive antenna arrays; MAC protocol; RTS/CTS/ACK frame; antenna pattern; directional antenna; hidden terminal; multihop wireless LAN; multihop wireless ad hoc network; smart antenna; wireless ad-hoc network; wireless channel; Ad hoc networks; Antenna arrays; Directional antennas; Directive antennas; Interference; Media Access Protocol; Throughput; Transmitting antennas; Wireless LAN; Wireless application protocol;
Conference_Titel :
Parallel and Distributed Systems, 2005. Proceedings. 11th International Conference on
Print_ISBN :
0-7695-2281-5
DOI :
10.1109/ICPADS.2005.90
