%0 Journal Article
%T Channel Allocation in Wireless Networks with Directional Antennas
%A Hong-Ning Dai
%A Kam-Wing Ng
%A Min-You Wu
%J Journal of Sensor and Actuator Networks
%D 2013
%I MDPI AG
%R 10.3390/jsan2020213
%X In this paper, we study the channel allocation in multi-channel wireless ad hoc networks with directional antennas. In particular, we investigate the problem: given a set of wireless nodes equipped with directional antennas, how many channels are needed to ensure collision-free communications? We derive the upper bounds on the number of channels, which heavily depend on the node density and the interference ratio ( i.e., the ratio of the interference range to the transmission range). We construct several scenarios to examine the tightness of the derived bounds. We also take the side-lobes and back-lobes as well as the signal path loss into our analysis. Our results can be used to estimate the number of channels required for a practical wireless network (e.g., wireless sensor network) with directional antennas.
%K multiple channels
%K channel allocation
%K wireless ad hoc networks
%K wireless sensor networks
%K directional antennas
%K graph theory
%U http://www.mdpi.com/2224-2708/2/2/213