Urgent-based Cross Layer Algorithm for QoS Provision in Ad Hoc Networks
This paper proposes a urgent-based cross layer algorithm for QoS provision in Ad Hoc networks.It can effectively improve the overall performance of high priority traffic at end-to-end delay and jitter.The algorithm uses the packets′ information of delay requirement and the hop left to the destination to get the urgent factor,and then taking full consideration of the packets′ urgent factor when sending packet.When timeout occurs in Real-Time traffic,an appropriate route reverse method can be used to improve the performance of network throughput and end-to-end delay.How to realize the QoS guarantee for the special priority traffic is the main point in this paper.Finally,simulation results in GloMoSim prove that the proposed algorithm gets good performance at end-to-end delay,jitter and throughputs compared to previous IEEE802.11e protocol.