Abstract
The IEEE 802.11e protocol, which provides QoS support to real-time multimedia applications at the MAC layer, has not adequately addressed the issue of handling the data flows through congestion-based mobile ad hoc networks, which result in high data loss, link breakage and re-transmissions, causing performance deterioration. In this paper, we propose a Multi-Objective Cross-Layer Optimisation (MOCLO) between the PHY-MAC-Network layer over MANETs. First, we implement each of the queues in 802.11e as a priority queue scheduler to prioritise the transmission of the traffic flow. Next, we propose a congestion aware QoS metric-based disjoint multipath routing scheme to route the priority traffic through the most efficient path. Using the mapping function between the MAC and network layer, the traffic is split into a set of efficient paths based on priority. The performance of the proposed scheme highlights the advantages of our cross-layer mechanism.
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