Using directional antennas for medium access control in ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
Beamforming in ad hoc networks: MAC design and performance modeling
EURASIP Journal on Wireless Communications and Networking
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Hi-index | 0.00 |
Directional antennas have shown to increase spatial reuse by allowing multiple transmitters and receivers to concurrently communicate using directional beams as long as they do not significantly interfere with each other. This appreciably increases average aggregate throughput of the network. Generally, for high throughput performance the directional MAC (Medium Access Control) protocols choose a random direction for destination's location and subsequent data transmissions. Under situations of heavy load, high mobility and narrow beamwidth, frequent updates are required to track the destinations. However, frequent updates may degrade the effective throughput of the network. Hence, we propose a novel Adaptive Directional MAC (ADMAC) protocol with integrated destination discovery that estimates destination's possible search span and then initiates transmission in that search span direction. Another major contribution is the average throughput performance comparison between last sector (LS), random sector (RS) and search span approaches. Average throughput results show an improvement of up to 40% and greater than 400%, when compared to the LS and the RS based DMAC protocols, respectively.