Abstract:
The necessity for Mobile ad hoc networks (MANETs) to provide ubiquitous, resilient and spontaneous communication in places where centralized infrastructure is limited, is...Show MoreMetadata
Abstract:
The necessity for Mobile ad hoc networks (MANETs) to provide ubiquitous, resilient and spontaneous communication in places where centralized infrastructure is limited, is increasing every day. Being self-adaptive and delay sensitive networks, it encounter difficult challenges to deliver Quality of Service (QoS) aid to real-time data streaming applications. 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 contention-based networks which result in high data loss, link breakage and retransmissions, causing performance deterioration. In this paper, we propose a multi objective cross-layer optimization(MOCLO) between PHY-MAC-Network layer after conducting a thorough study of 802.11e behavior over MANETs. First, we implement each of the queues in 802.11e as a priority queue scheduler to prioritize the transmission of the traffic flow. Next, we propose a congestion aware QoS metrics based disjoint multipath routing scheme to route the priority traffic through the most efficient path. Using the mapping function between MAC and network layer, traffic is split in to set of efficient paths based on priority. We extend our cross-layer approach by exploiting the multi-rate link adaptation function to select the appropriate transmission rate on a frame basis, based on the channel state information. The performance of the proposed scheme is thoroughly evaluated through the simulations, which highlight the advantages of our cross-layer mechanism.
Date of Conference: 25-29 June 2018
Date Added to IEEE Xplore: 30 August 2018
ISBN Information:
Electronic ISSN: 2376-6506