Proactive routing protocol maintains constant and updated routing information for each pair of networking nodes by propagating route updates proactively at fixed interval of time. The periodic and event-driven messages are responsible for route establishment and route maintenance. The Destination-Sequenced Distance Vector (DSDV) protocol is the commonly used proactive routing protocol in mobile ad hoc network (MANET). In DSDV, each node maintains a routing table with one route entry for each destination in which the shortest path is recorded. I ....etc

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ns2 code for drina algorithm

ABSTRACT
Large scale dense Wireless Sensor Networks (WSNs) will be increasingly deployed in different classes of applications for accurate monitoring. Due to the high density of nodes in these networks, it is likely that redundant data will be detected by nearby nodes when sensing an event. Since energy conservation is a key issue in WSNs, data fusion and aggregation should be exploited in order to save energy. In this case, redundant data can be aggregated at intermediate nodes reducing the size and number of exch ....etc

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pso algorithm ns2 source code

Abstract
In the conventional mobile ad hoc network (MANET) systems' route rediscovery methods, there exists route failure in all route discovery methods resulting in data loss and communication overheads. Hence, the routing has to be done in accordance with mobility character of the network. In this manuscript, a particle swarm optimization (PSO)-based lifetime prediction algorithm for route recovery in MANET has been proposed. This technique predicts the lifetime of page link and node in the available bandwidth b ....etc

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pegasis algorithm source code in ns2

The nodes of wireless sensor networks, with limited computing, communicating and sensing capabilities as well as limited energy, can make the best use themselves to gather data from sensor nodes to Base Station (BS) by using excellent network topologies, optimized routing schemes or data fusion algorithms in order gain the lifetime as long as possible
In the simplest direct communication routing protocol, each sensor node directly communicates with base station. Since the distance is large, it consumes the ....etc

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This paper presents Random Early Detection (RED) gateways
for congestion avoidance in packet-switched networks.
The gateway detects incipient congestion by computing
the average queue size. The gateway could notify
connections of congestion either by dropping packets arriving
at the gateway or by setting a bit in packet headers.
When the average queue size exceeds a preset threshold,
the gateway drops or marks each arriving packet with a
certain probability, where the exact probability is a function
of the average queue size.
RED gate ....etc

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we need a backended coding for forwarding algorithmnd greedy helper discovery protocol ....etc

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energy efficient dsr algorithm ns2 code

Mobile Ad Hoc Networks are a wireless network which does not require any infrastructure support for transferring data from one node to another node .In these infrastructure networks, each node works as source, receiver and intermediate router. From this we can say that node can acts as host or router at different time period depending upon simulation time. If node wants to send the data it can act as a source and if node wants to receive the data it acts as receiver, if node has to transfer the data pac ....etc

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Abstract

A MANET (Mobile Adhoc Network) is an infrastructure-less self configuring wireless networks of routers. It has potential applications in totally unpredictable and dynamic environment. Routing protocol used here is a form of reactive routing called AODV. AODV (Adhoc On Demand Distance Vector) routes based on demand. The major benefit of AODV is minimum connection setup delay and assignment of sequence numbers to destination to identify the latest route. The route updates are done by periodic beaconing. This network is susceptible to va ....etc

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Hi,
I need implementation of anycasting in C or ns-2 for sensor networks..
Anybody have the code. Kindly share..
Regards ....etc

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Abstract

In computer science, particle swarm optimization (PSO) is a computational method that optimizes a problem by iteratively trying to improve a candidate solution with regard to a given measure of quality. PSO optimizes a problem by having a population of candidate solutions, here dubbedparticles, and moving these particles around in the search-space according to simple mathematical formulae over the particle's position and velocity. Each particle's movement is influenced by its local best known position and is also guided toward the b ....etc

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