Enhancement in QoS to AODV protocol for MANETS
نویسندگان
چکیده
A mobile ad hoc network (MANET) is a collection of mobile nodes where each node is free to move about arbitrarily. The Ad Hoc On-Demand Distance Vector (AODV) routing protocol is one of the well-known and efficient on-demand MANET protocols. AODV currently does not support Quality of Service (QoS) and has no load balancing mechanism. We propose some enhancements to the AODV protocol to provide QoS and load balancing features by adding two extensions to the messages used during route discovery. A detailed packetlayer simulation model with media access control (MAC) and physical layer models is used to study the performance of both the AODV and the QoS-AODV protocols. Important performance measures such as average delay, packet delivery fraction and normalized routing load is used in the comparison. Simulation results are presented for networks with 50 mobile nodes with different network loads, delay constraints, topological rate of change and mobility speeds.
منابع مشابه
Secure Routing Protocol: Affection on MANETs Performance
In mobile ad hoc networks, the absence ofinfrastructure and the consequent absence of authorizationfacilities impede the usual practice of establishing a practicalcriterion to distinguishing nodes as trusted and distrusted.Since all nodes in the MANETs would be used as router inmulti-hop applications, secure routing protocols have vital rulein the security of the network. So evaluating the perf...
متن کاملImprovement over AODV Considering QoS Support in Mobile Ad-hoc Networks
MANETs are very advantageous and fruitful when there is no infrastructure or has been destroyed due to some reasons like earthquake, floods and so on. Data communication in MANETs are very challenging issue due to threats like limited battery power, limited bandwidth, mobility, routing and QoS and so on. Due to these challenges and scarcity of resources in MANETs, it’s very difficult to achieve...
متن کاملTestbed Evaluation of QoS Routing Enhancements for Mobile Ad Hoc Networks
Mobile Ad hoc Networks (MANETs) are a specific type of wireless network that is infrastructure-less, dynamic and self-organising. There is a growing need for MANETs to support real-time multimedia applications. Most current MANET routing protocols only support best-effort routing. By improving the QoS on MANETs, we can extend the set of multimedia services that can run on the MANET. We propose ...
متن کاملComparative Performance Analysis of AODV,DSR, TORA and OLSR Routing Protocols in MANET Using OPNET
Mobile Ad Hoc Networks (MANETs) are receiving a significant interest and are becoming very popular in the world of wireless networks and telecommunication. MANETs consist of mobile nodes which can communicate with each other without any infrastructure or centralized administration. In MANETs, the movement of nodes is unpredictable and complex; thus making the routing of the packets challenging....
متن کاملPerformance Enhancement by an Energy Adept Pe-aodv with Link Failure Prediction
Mobile Ad hoc Network (MANET) is a wireless network which has dynamic nature with infrastructure less without a central administration. In MANETs link failure occurs due to topological changes of mobile node which causes high data loss and delay, so the performance is enhanced by predicting the link break in prior. The most challenging fact in the routing process is affording the energy profici...
متن کامل