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MANET is very hostile environment to design and implement computing algorithms. One of the major concerns in MANET's is to elect a coordinator in order to manage many mobile computing applications. In the contemporary literature, many protocols exist for leader election. However, most of them use message broadcast technique. The present article proposes a technique that avoids the broadcast of messages...
Optimized link state routing (OLSR) protocol is a table-driven proactive routing protocol for wireless mobile ad hoc networks. The key idea behind this protocol is to reduce the control message overheads by marking subset of neighbors as multi-point relays (MPRs). In this paper, we discuss problems of OLSR or other routing protocols that are due to mobility of nodes. We integrate our solutions to...
Security in wireless ad hoc network (WAN) is very important issue. Due to dynamic topology and mobility of nodes, Wireless Ad hoc Networks are more vulnerable to security attacks than conventional wired and wireless networks. Nodes of Wireless Ad hoc Network communicate directly without any central base station. That means in ad hoc network, infrastructure is not required for establishing communication...
Mobile ad hoc networks remove the dependence on a fixed network infrastructure by treating every available mobile node as an intermediate switch, thereby extending the range of mobile nodes well beyond their base transceivers. Since routing is the backbone of any mobile ad hoc communication, thus if there occur any flaws in the routing, the whole of the communication would come down to a stand still...
This paper presents modification of span for wireless mobile ad hoc networks. Span is an energy efficient coordination algorithm for topology maintenance in wireless ad hoc networks. Each node in span does the local decision on whether to announce for or withdraw from coordinator. We modify coordinator withdrawal procedure of span by adding average speed of node as one of the condition for withdrawing...
This paper presents energy aware greedy routing (EAGR) scheme for wireless ad hoc networks. In this scheme, the cost metric of a node depends on the following parameters of a neighboring node: (1) Distance from the destination, (2) fraction of energy consumed, and (3) rate of energy consumption. When a node has the least cost metric, the packet is forwarded to that node. We evaluate the performance...
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