Abstract
The Optimized Link State Routing Protocol is developed for Mobile Ad Hoc Network. It operates as a table driven, proactive protocol. The core of the OLSR protocol is the selection of Multipoint Relays (MPRs), used as a flooding mechanism for distributing control traffic messages in the network, and reducing the redundancy in the flooding process. A node in an OLSR network selects its MPR set so that all two hop neighbor are reachable by the minimum number of MPR. However, if an MPR misbehaves during the execution of the protocol, the connectivity of the network is compromised. This paper introduces a new algorithm for the selection of Multipoint Relays (MPR) with additional coverage whose aims is to provide each node to selects alternative paths to reach any destination two hops away. This technique helps avoid the effect of malicious attacks and its easily to implement the corresponding algorithm.
Highlights
Mobile Ad-hoc networks (MANETs) are a major element of the business environment, allowing wireless devices such as cell phones, laptops, and PDAs to provide mobility to users and enable them to be in constant contact with others
Mobile Ad hoc Networks (MANET) are dynamic and self-organized networks that are able to operate without an dependability on fixed or pre-installed infrastructure, using only wireless devices that act both as hosts and routers, and cooperatively provide multi-hop communications [1]
The Optimized Link Stat Routing Protocol (OLSR) [5] is a proactive routing protocol for MANET, i.e. All nodes need to maintain a consistent view of the network topology
Summary
Mobile Ad-hoc networks (MANETs) are a major element of the business environment, allowing wireless devices such as cell phones, laptops, and PDAs to provide mobility to users and enable them to be in constant contact with others. Works in MANET security research (e.g. ARAN [8], Aridane [9], SAODV [10,11], SEAD [12], [13,14]) have focused on providing preventive schemes to protect the routing protocol in MANET Most of these schemes are based on key management or encryption techniques to prevent unauthorized nodes from joining the network. The Optimized Link Stat Routing Protocol (OLSR) [5] is a proactive routing protocol for MANET, i.e. All nodes need to maintain a consistent view of the network topology They are vulnerable to a number of disruptive attacks in the presence of malicious nodes (identity spoofing, link withholding, link spoofing, miserly attack, wormhole attack and Black hole attack...).
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