Abstract
We propose a link layer protocol and link-state routing protocol suite for multi-channel ad hoc networks. 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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 85-98 |
| Number of pages | 14 |
| Journal | Wireless Communications and Mobile Computing |
| Volume | 12 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2012 |
| Externally published | Yes |
Keywords
- channel assignment
- multi-channel network
- routing
ASJC Scopus subject areas
- Information Systems
- Computer Networks and Communications
- Electrical and Electronic Engineering