Abstract
The Gossip-Based Relay Protocol (GRP) is developed based on Ad Hoc on Demand Distance Vector Protocol (AODV) and proposed to increase the efficiency of package routing functionality in ad hoc networks through specific flooding scheme. This lightweight protocol reduced the collisions on the network through specific mechanisms. Request to Send/Clear to Send (RTS/CTS) mechanism is widely used in ad hoc environment with Temporarily Ordered Routing Algorithm (TORA) in order to eliminate collisions and allow access to the shared medium through proposed authentication methods. Since GRP contains specific mechanism of directed acyclic Graph (DAG) mechanism to mitigate overhead problem, RTS/CTS modified TORA might result in similar performance metrics. In this paper, TORA protocol has a modification of new RTS/CTS mechanism and has been simulated in order to be compared with proposed lightweight robust forwarding GRP scheme in terms of specific performance metrics such as network throughput, end-to-end delay and message flooding rate over the network through OPNET simulation package in order to expose the optimal solution to increase overall network throughput in ad hoc environment.
Highlights
Calculated routing tables and exchange of dynamic routing information among mobile nodes are inevitable for existence of multi-hop networks due to their nature characteristics
The OPNET simulation package provides two different types of statistics which are known as Global and Object statistics in order to evaluate the performance metrics or the entire simulation outcomes
The global discrete event statistics (DES) statistics are taken into consideration for evaluation of performance metrics
Summary
Calculated routing tables and exchange of dynamic routing information among mobile nodes are inevitable for existence of multi-hop networks due to their nature characteristics. RTS/CTS mechanism with TORA protocol is used to provide an authentication between sender and receiver so it creates dynamic routing information with different proposed methods similar to GRP where it aims to decrease the broadcast messages on the network without requesting any explicit route setup. Aim of this research paper is to expose the impact of different lightweight routing mechanisms on multi-hop wireless networks in terms of different network performance metrics. The section covers formulation of simulation scenario for proposed mechanisms in OPNET simulation environment and findings section discusses the simulation outcomes to expose the optimal algorithm to use in multi-hop wireless networks. All these lightweight robust mechanisms are shown and explained in details and each of the proposed method is simulated in OPNET environment to compare and expose the optimal algorithm or method to use in multi-hop wireless networks
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