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
A power control MAC protocol for ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
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
A Distributed Transmission Power Control Protocol for Mobile Ad Hoc Networks
IEEE Transactions on Mobile 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
Directional NAV Indicators and Orthogonal Routing for Smart Antenna Based Ad Hoc Networks
ICDCSW '05 Proceedings of the Second International Workshop on Wireless Ad Hoc Networking - Volume 09
Wireless mesh networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Antenna array pattern synthesis via convex optimization
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
Mesh networks: commodity multihop ad hoc networks
IEEE Communications Magazine
A survey on wireless mesh networks
IEEE Communications Magazine
Ad hoc networking with directional antennas: a complete system solution
IEEE Journal on Selected Areas in Communications
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Wireless Mesh Networks have emerged recently as a technology for next-generation wireless networking. To increase the performance of wireless nodes in such networks many approaches have been proposed, including directional and adaptive antennas. However, while adaptive antennas can improve the utilization of the wireless medium by reducing radio interference and the impact of the exposed nodes problem, they can also exacerbate the hidden nodes problem. Thus, MAC protocols for adaptive antennas need to be carefully designed to cope with this issue. In this regard we propose a novel MAC protocol that exploits the potentials offered by adaptive antennas in Wireless Mesh Networks to improve system performance. As key innovative feature of the proposed MAC protocol with respect to existing solutions, the information about wireless medium reservation is spread to the maximum possible extent without interfering with the connections already established in the network. This is achieved by transmitting RTS/CTS frames in all antenna sectors at the maximum allowed power that does not cause interference with ongoing transmissions. The DATA/ACK exchange then takes place directionally and at the minimum necessary power. We measure the performance of the proposed MAC protocol by simulation in several realistic network scenarios, and we compare it with the most notable solutions proposed in the literature. The results show that our proposed scheme allows to increase considerably both the total traffic accepted by the network and fairness between competing connections.