Published on May 2015 | Computer Networks

A Novel Link-Utilization Based Cooperative Routing for QOS Aware 802.11e MAC Protocols

— A wireless Ad hoc network is decentralized in nature and routing can be done by all the nodes they are forwarding data to the other nodes. In wireless multihop networks, nodes communicate with each other using wireless channel and it includes partner and relay nodes. Signal to Interference and noise is the major problem in the spatial networks. The proposed work is a novel link utility cooperative based routing for QOS aware 802.11e MAC protocols. By the maximum utilization of the broadcasting procedure of wireless multi-hop networks, the overheard node of the last hop is acting as the partner of transmitter in the current hop. In the link-utility scheme, the nodes are increasing their link utility by adjusting the transmission rate and the power. The node with the peak link utility is selected as the best node and the transmissions can be done through here. But for enhancing this performance in 802.11e protocols a separate link utility based rate switching scheme is maintained. This is for adapting the transmission rate based on the channel’s condition. Received Signal Strength Indicator is informing whether to increase or decrease the rate.