Traffic-aware routing for real time communications in wireless multi-hop networks

This paper proposes a new traffic-aware routing metric, PPTT, which considers both neighboring traffic and self-traffic interference jointly. Real time communication (RTC) over wireless multi-hop networks has two major challenges: strong QoS provision and severe interference in wireless networks. In wireless multi-hop net works, interference is the key factor impacting the network performance. Two types of traffics will interfere with the coming RTC flow, one is neighboring traffic including the traffic cross the same node and adjacent nodes, the other is this RTC traffic itself (we call it self-traffic) along the path. Experimental results show PPTT scheme outperforms other routing schemes without considering self-traffic effect for RTC traffic