NDLI: Improving network performance with affinity based mobility model in opportunistic network

Content Provider	IEEE Xplore Digital Library
Author	Batabyal, S. Bhaumik, P.
Copyright Year	2012
Description	Author affiliation: Dept. of Information Technology, Jadavpur University, Kolkata (WB), India (Batabyal, S.; Bhaumik, P.)
Abstract	Opportunistic network is a type of Delay Tolerant Network which is characterized by intermittent connectivity amongst the nodes and communication largely depends upon the mobility of the participating nodes. The network being highly dynamic, traditional MANET protocols cannot be applied and the nodes must adhere to store-carry-forward mechanism. Nodes do not have the information about the network topology, number of participating nodes and the location of the destination node. Hence, message transfer reliability largely depends upon the mobility pattern of the nodes. In this paper we have tried to find the impact of RWP (Random Waypoint) mobility on packet delivery ratio. We estimate mobility factors like number of node encounters, contact duration(link time) and inter-contact time which in turn depends upon parameters like playfield area (total network area), number of nodes, node velocity, bit-rate and RF range of the nodes. We also propose a restricted form of RWP mobility model, called the affinity based mobility model. The network scenario consists of a source and a destination node that are located at two extreme corners of the square playfield (to keep a maximum distance between them) and exchange data packets with the aid of mobile ‘helper’ nodes. The source node and the destination node are static. The mobile nodes only help in relaying the message. We prove how affinity based mobility model helps in augmenting the network reliability thereby increasing the message delivery ratio and reduce message delivery latency.
Starting Page	1
Ending Page	7
File Size	1152123
Page Count	7
File Format	PDF
ISBN	9781457705793
ISSN	19345070
e-ISBN	9781457705809
DOI	10.1109/WTS.2012.6266093
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-04-18
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	inter-contact time Random Waypoint Satellite broadcasting contact duration Mobile communication Mobile ad hoc networks Radio frequency OpNet affinity based movement model Satellites degree of biasness Reliability Mobile computing satellite node
Content Type	Text
Resource Type	Article

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