Enhance ment the P erformance of EDRP by A daptive H ello M essaging S cheme for N eighbor D iscovery i n W ireless A d - hoc N etwork
Suraj G. Gupta · 2014
In mobile ad hoc networks (MANETs), the network topology changes frequently and unpredictably due to t he arbitrary mobility of nodes. This feature leads to frequent path failures and route reconstructions, w hich causes an increase in the routing control overhead. Effect ive routing protocol needed to developed or modifyi ng existing one. Protocols can be divided into topolog y- and position-based protocols but the protocol ha ve physical position knowledge effective than others t o overcome the unpredictably due to the arbitrary m obility of nodes. An estimated distance (EstD)-based routing p rotocol (EDRP) may become the best choice between position-based protocols; because position-based pr otocols used GPS to found the node location but EDRP not used it, this is the reason to used the EDRP. In ED RP review found that, performance of EDRP on focused on energy efficiency. This is main motivation of this paper investigation and evaluation of EDRP. In inve stigation found packet delivery ratio and the average end-to- end delay give some negative effect, when the node distribution is very sparse. EDRP used Hello packet when the time elapsed from the last broadcasting p acket (RREQ, RERR, or some other broadcasting packets) is greater than the value of the Hello Interval does the node need to send a Hello packet. This increase the risk that a sender will transmit a packet (Hello packet) through a broken link that has not been detected by Hello messaging. It is the reason becau se of that of the performance metrics of routing pr otocol affected. To overcome that problem this paper propo sed used “An Adaptive Hello Messaging Scheme for Neighbor Discovery in On-Demand MANET Routing Protocols”, that suppression of unnecessary Hello messaging. Based on the event interval of a node, t he Hello interval can be enlarged without reduced detestability of a broken link, which decreases net work overhead and hidden energy consumption. May also enhance the performance of other metrics of EDRP which is generating the negative effect.