A link layer protocol and link‐state routing protocol suite for multi‐channelad hocnetworks
Wonyong Yoon, Nitin H. Vaidya · Wireless Communications and Mobile Computing · 2010
Abstract We propose a link layer protocol and link‐state routing protocol suite for multi‐channelad hocnetworks. The proposed protocol suite addresses several practical issues that arise when nodes equipped with two radio interfaces want to utilize available channels. The routing layer makes a hybrid channel assignment where one interface is fixed and the other is switchable. Based on that, the routing layer runs a shortest path routing algorithm augmented with channel diversity. The link layer implements a slotted structure to minimize broadcast overhead inherent to multi‐channel networks. By using flow‐ and packet‐level simulators, we make some important observations. First, a hybrid channel assignment is good for connectivity and amenable to shortest‐path routing. Second, seeking a shortest‐path can be a better routing strategy in terms of global system throughput than complex channel‐diverse routing. Third, channel switching delay is not a throttling factor in terms of global system throughput. Copyright © 2010 John Wiley & Sons, Ltd.