Mobile ad hoc networks (MANET) are constructed by mobile nodes without access point. Since MANET has certain constraints, including power shortages, an unstable wireless environment and node mobility, more power-efficient and reliable routing protocols are needed. The OLSR protocol is an optimization of the classical link state algorithm. OLSR introduces an interesting concept, the multipoint r...

Ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the aid of any established infrastructure or centralized administration. Routing protocols in mobile ad hoc network helps node to send and receive packets. In this paper our focus is to study Reactive (AODV), Pro active (OLSR), and Hybrid (ZRP) protocols based on random waypoint mobility mode...

Ad hoc network infrastructure is dynamically changing, and the links are wireless with less capacity and more prone to errors. Adding trust to the existing security infrastructures would enhance the security of these environments. Describing components and their sub-components using ontologies, creates a methodology and mechanism in order to efficiently design. With a viewpoint to add trust as ...

New production environments will demand extensive exchange of communication information. Wireless communications will provide effective means to meet these demands. However, it is important that effective protocols are available to deliver the required QoS. Cross-layer algorithms are potential candidates that exhibit interesting features compared to monolithic traditional protocols. This paper ...

We present in this paper a new mechanism for the OLSR routing Protocol, aiming to improve mobility and energy management in mobile adhoc network. As known OLSR use the concept of an MPR mechanism where only nodes selected as MPRs can relay broadcast packet received from their selectors, those nodes have to satisfy certain requirements to assure this mission , speaking of stability and physical ...

Routing protocols are a critical aspect to performance in mobile wireless networks. The development of new protocols requires testing against well-known protocols in various simulation environments. In this paper we present an overview of several well-known MANET routing protocols and the implementation details of the DSDV routing protocol in the ns-3 network simulator. We analyse DSDV routing ...

The objective of this work is to compare with simulating, using OPNET the performance of five Ad hoc routing protocols: DSR, AODV, OLSR ,TORA and GRP , and to examine the impact of mobility and the density of nodes on the behavior of these protocols in a Vehicular Ad hoc NETwork (VANET). The results show that there is not a protocol that is favorite for all evaluation criteria. Indeed, each pro...

Real implementation of routing protocol of WSNs is a time consuming process and expensive due to simulation evaluation. This paper presents an organized performance study of three routing protocols, Ad hoc On Demand Distance Vector (AODV), Dynamic Source Routing (DSR), and Optimized Link State Routing (OLSR) protocols for WSNs. The performance study of WSNs routing protocols is analysed by equa...