Wireless Communication

M. Geetha ¹, R. Umarani ²

Affiliations
1 Department of Computer Applications, Vivekananda College of Arts and Sciences for Women, Triuchengode, IN
2 Department of Computer Science, Sri Sarada College for Women, Salem, IN

Abstract

Mobile node is a collection of mobile nodes which forms a temporary network. Some of the nodes in an ad hoc network may want access to an external network, such as internet. Different mechanisms have been proposed to integrate MANETs and the Internet[10][11]. These mechanisms are differing based on gateway discovery mechanism, and Adhoc routing protocol[13][16]. When MANET is connected to the Internet, it is important for the mobile nodes to detect an available gateway providing an access to the Internet. The objective of this paper is based on Mobile Ad-hoc Network (MANET) routing protocols used in gateways. AODV[1] is one of the most popular routing protocols for ad-hoc networks; it uses the flooding technique for locating the destinations, and gateway, possibly cause an overhead in the network. To overcome this problem we have introduced the MPR (Multi Point Relay) algorithm [2][9] in the AODV protocol in order to reduce the number of messages broadcasted during the flooding phase and also the MPRAODV protocol uses the hybrid approach to find out the gateway[14][15]. The extended AODV (MPRAODV) using MPR reduces the overhead and enhances the packet delivery performance.

Keywords

MANET, AODV, MPR, Gateway, Adhoc Internet Connectivity.

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S. Saravanan ¹, M. Geetha ²

Affiliations
1 Department of CSE, Jayalakshmi Institute of Technology, Thoppur, Dharmapuri, IN
2 Department of MCA, Sona College of Technology, Salem-635301, IN

Abstract

Peer-to-peer (P2P) systems have rapidly grown in popularity and have become a dominant means for sharing resources in the past few years. Since the nodes are often heterogeneous in these types of systems a load balancing key was a challenging. While several load-balancing schemes have been proposed in the literature, these solutions are typically ad hoc, heuristic based, and localized. In this project, we present a general framework, HiGLOB, for global load balancing in structured P2P systems. Each node in HiGLOB has two key components: 1) a histogram manager maintains a histogram that reflects a global view of the distribution of the load in the system, and 2) a load-balancing manager that redistributes the load whenever the node becomes overloaded or underloaded. A P2P network is partitioned into non overlapping regions corresponding to histogram bucked by exploiting the routing metadata. A mechanism was proposed to keep the cost of constructing and maintaining the histograms low. This scheme can control and bound the amount of load imbalance across the system. Skip Graph, BATON, and Chord are the three existing structured P2P system where we demonstrate the effectiveness of HIGLOB by instantiating. Experimental results clearly indicate that our approach works well.

Keywords

Peer-to-Peer (P2P), HiGLOB, BATON.

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