Title :
SpotMAC: A Pencil-Beam MAC for Wireless Mesh Networks
Author_Institution :
Wollongong Univ., Wollongong
Abstract :
Deafness is a key problem. It erodes the performance gains provided by directional antennas, and introduces a new hidden terminal problem. To address deafness, and hence the hidden terminal problem, we propose SpotMAC. By exploiting narrow or pencil beams, SpotMAC achieves high spatial reuse, throughput and fairness. In addition, pencil beams simplify the collision avoidance process and constrain the hidden terminal problem to a linear topology which can be solved using an inverse RTS/CTS exchange. From extensive simulation studies, we confirm nodes using SpotMAC have several orders of magnitude higher throughput than those using the IEEE 802.11 MAC with omni-directional antenna.
Keywords :
access protocols; directive antennas; radio networks; telecommunication congestion control; telecommunication network topology; SpotMAC protocol; collision avoidance process; directional antennas; hidden terminal problem; inverse RTS/CTS exchange; linear topology; pencil-beam MAC; wireless mesh network; Collision avoidance; Computer networks; Deafness; Directional antennas; Interference; Switches; System recovery; Throughput; Topology; Wireless mesh networks;
Conference_Titel :
Computer Communications and Networks, 2007. ICCCN 2007. Proceedings of 16th International Conference on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-1251-8
Electronic_ISBN :
1095-2055
DOI :
10.1109/ICCCN.2007.4317801
