On the performance of ad hoc networks with beamforming antennas
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Directional virtual carrier sensing for directional antennas in mobile ad hoc networks
Proceedings of the 3rd ACM international symposium on Mobile ad hoc networking & computing
Radiowave Propagation and Smart Antennas for Wireless Communications
Radiowave Propagation and Smart Antennas for Wireless Communications
Smart Antennas for Wireless CDMA
Smart Antennas for Wireless CDMA
Using directional antennas for medium access control in ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
A MAC protocol for full exploitation of directional antennas in ad-hoc wireless networks
Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
Deafness: A MAC Problem in Ad Hoc Networks when using Directional Antennas
ICNP '04 Proceedings of the 12th IEEE International Conference on Network Protocols
Avoiding Head of Line Blocking in Directional Antenna
LCN '04 Proceedings of the 29th Annual IEEE International Conference on Local Computer Networks
Efficient deafness avoidance in wireless ad hoc and sensor networks with directional antennas
PE-WASUN '05 Proceedings of the 2nd ACM international workshop on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Enhancing throughput over wireless LANs using channel state dependent packet scheduling
INFOCOM'96 Proceedings of the Fifteenth annual joint conference of the IEEE computer and communications societies conference on The conference on computer communications - Volume 3
Ad hoc networking with directional antennas: a complete system solution
IEEE Journal on Selected Areas in Communications
Asymptotic connectivity in wireless ad hoc networks using directional antennas
IEEE/ACM Transactions on Networking (TON)
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Using directional antennas in wireless mobile ad hoc networks can greatly improve the transmission range as well as the spatial reuse. However, it will also cause some problems such as deafness problem and hidden terminal problem, which greatly impair the network performance. This paper first proposes a MAC protocol called Selectively Directional MAC (SDMAC) that can effectively address these problems and significantly improve the network throughput. Then two improvements on SDMAC are proposed. The first one is to improve the network throughput by scheduling the packets in the queue (a scheme called Q-SDMAC), thus the head-of-line (HOL) blocking problem can be addressed. The second one is to relax the assumption that each node knows the relative directions of its neighboring nodes and use caches to buffer those relative directions (a scheme named Q-SDMAC using cache). Extensive simulations show that: (1) SDMAC can achieve much better performance than the existing MAC protocols using directional antennas; (2) The network throughput can be significantly improved by scheduling the packets in the queue; (3) Using caches can still achieve high network throughput when nodes are moving; and (4) Network throughput decreases when directional antennas have side lobe gain.