Interference, Traffic Load and Delay Aware Routing Metric for Wireless Mesh Network

Abstract

The self-organizing property of the wireless mesh network (WMN) has made them suitable for implementing various networking application, such as video surveillance. In WMN, routing protocols and routing metrics play an important part in implementing real-time applications. The routing metric predicts the quality of various paths discovered by the routing protocol. We introduce a routing metric titled Interference, Traffic Load and Delay Aware (ITLDA) to estimate the end-to-end delay of a path, as sum of contention, transmission and queuing delays. Transmission and queuing delays are estimated using the available bandwidth of the link, which is estimated by passive monitoring. The contention delay is estimated using average contention window and channel utilization. Simulation outcomes indicate that the performance of ITLDA is superior to the existing routing metrics.

Keywords

• cross layer design
• quality of service
• routing
• video surveillance
• wireless mesh networks