Evaluation of Multi-Radio Extensions to DSR for Wireless Multi-Hop Networks

Performance on multi-hop networks suffers from limited channel capacity and poor scalability problem as the network size or density increases(Gupta and Kumar, 2000). One way to alleviate this problem is to equip each node with multiple radios. As hardware cost drops, this approach becomes more and more appealing and feasible. By tuning radios into non-interfering channels, the wireless spectrum can be more efficiently utilized, thus enhancing the whole network performance. This works extensively evaluates Dynamic Source Routing (DSR)(Johnson and Maltz, 1996) protocol for multi-radio multi-hop networks. Through simulations, DSR with multi-radio extensions exhibit an overall performance improvement for throughput, packet delivery rate and latency.