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Channel Allocation in Wireless Networks with Directional Antennas
Faculty of Information Technology, Macau University of Science and Technology, Macau
Department of Computer Science and Engineering, The Chinese University of Hong Kong, Hong Kong
Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
* Author to whom correspondence should be addressed.
Received: 1 March 2013; in revised form: 29 March 2013 / Accepted: 2 April 2013 / Published: 16 April 2013
Abstract: 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.
Keywords: multiple channels; channel allocation; wireless ad hoc networks; wireless sensor networks; directional antennas; graph theory
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Cite This Article
MDPI and ACS Style
Dai, H.-N.; Ng, K.-W.; Wu, M.-Y. Channel Allocation in Wireless Networks with Directional Antennas. J. Sens. Actuator Netw. 2013, 2, 213-234.
Dai H-N, Ng K-W, Wu M-Y. Channel Allocation in Wireless Networks with Directional Antennas. Journal of Sensor and Actuator Networks. 2013; 2(2):213-234.
Dai, Hong-Ning; Ng, Kam-Wing; Wu, Min-You. 2013. "Channel Allocation in Wireless Networks with Directional Antennas." J. Sens. Actuator Netw. 2, no. 2: 213-234.