Networking and Communication Engineering

Samina Mansuri ¹, Hemal Shah ², Yogeshwar Kosta ³

Affiliations
1 Ganpat University, Kherva, Mehsana, Gujarat, IN
2 U.V.Patel College of Engineering, Ganpat University, Kherva, Mehsana, Gujarat, IN
3 Marwadi Education Foundation, Rajkot, Gujarat, IN

Abstract

Challenged networks are infrastructure less networks and connectivity in such network is mostly episodic. These networks have limited resources e.g. buffer, bandwidth, power etc., and short contact durations with neighbor nodes. Therefore, information dissemination itself is open research issue. Routing follows store carry forward mechanism across the node or relays. With finite storage capacity, buffer may get overflow even in limited contact opportunities. These impacts on delivery ratio, resource utilization and increase in overhead. Thus, there is a need of drop policy at each node that should improve the delivery ratio or have minimum impact on delivery ratio, improve resource utilization and reduce overhead. In this paper, various drop policies, their implementation, simulation scenario and behavior is experimented. It is carried out using different synthetic data sets using opportunistic network environment (ONE) simulator. This investigation is done to study, analyze and understand the behavior of existing drop policies under varying network conditions & routing protocols and propose the better drop policy in future.

Keywords

Buffer, DTN, Drop Policy, Routing Protocol, One Simulator.

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Hemal Shah ¹, Yogeshwar P. Kosta ², Maitrey Patel

Affiliations
1 Ganpat University, Gujarat, IN
2 Marwadi Education Foundation, Rajkot, IN

Abstract

In this paper we have consolidated various aspects related to projects & application executed to gather trace dataset for Delay tolerant network (DTN) or Challenged Networks.. The purpose of the study was to collectively summarize and present various projects setup against the variety of applications in-demand today. Based upon application, we have presented capsule description for each application - short summary, its purpose, network type, environment, configuration/setup and data collection methodology. This we believe is the first kind of study done so far. Finally as we consolidate our findings, our study leads us to affect generalization of routing in DTN based upon application. This paper will serve as quick reference base to summarize the details of a network and help identify a suitable scheme to fit an application.

Keywords

Wireless Networks, Sensor Nodes, DTN, Adhoc Network.

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