The Impact of Directional Antennas on MAC Layer Protocol for Ad-Hoc Networks
The application of directional antennas in the mobile devices of wireless ad hoc networks has the potential to increase the network connectivity and capacity. Previous paper in ad hoc networks typically assumes the use of omni-directional antennas at all nodes. With omni-directional antennas, while two nodes are communicating using a given channel, MAC protocols such as IEEE 802.11 require all other nodes in the vicinity to remain silent. With directional antennas, two pairs of nodes located in each other's vicinity may potentially communicate simultaneously, increasing spatial reuse of the wireless channel.