An adaptive low overhead routing scheme with priority function for MANETs

摘要

Scalability of a network having high mobility and great number of mobile nodes can be enhanced by a reduction of the control overhead, thereby increasing the capacity of the network system. Protocol overhead minimization in performance maintenance becomes important in MANETs [Mobile Ad-hoc Networks] because bandwidth is one of the vital resource. For reducing the control overheads, here we put forward a routing protocol with an adaptive low overhead. The proposal is an enhanced DLPS [Distributed Laxity-Based Priority Scheduling] proposal [18, 19] in Medium Access Control layer for tracing the index of priority of the packets between the source and destination. ODMRP [On Demand Multicast Routing Protocol] [21–26] is used in Network layer for routing these high priority packets. The actual overhead in the system is moderate, as only high priority packets are routed. In order to maintain decreased overhead thereby increasing the efficiency of the system, a dependable ODMRP is proposed. Through simulation, we intend to demonstrate that the proposed adaptive mechanism outperforms the conventional proactive routing protocol.