A Distributed Directional-to-Directional MAC Protocol for Asynchronous Ad Hoc Networks
Source: University of Victoria
The use of directional antennae in ad hoc networks has received growing attention in recent years. However, most existing directional MAC protocols assume interchangeable directional and omni-directional modes of operation. Such operation reduces the spatial gain and introduces the asymmetry-in-gain problem. In this paper, the authors propose a Directional-to-Directional (DtD) MAC protocol for ad-hoc networks that operates in the directional mode exclusively. The protocol is fully distributed, does not require any synchronization, eliminates the asymmetry in-gain problem, and alleviates the deafness problem.