The performance of mobile ad-hoc networks (MANET) is related to the efficiency of the routing protocols in adapting to frequently changing network topology and link status. This paper addresses the issue by comparing the relative performance of three key ad-hoc routing protocols: Destination-sequenced Distance Vector (DSDV), Ad-hoc Ondemand Distance Vector (AODV) and Optimized Link State Routin...

Mobile ad hoc networks (MANETs) are proposed for emergency situations because they are self-organized and infrastructure-less. However, the mobility of the nodes and the lack of infrastructure pose challenges to the routing protocols. The signaling of these protocols is affected by the same problems as the data traffic: a multi-hop environment with limited bandwidth, collisions and bit errors. ...

Multipath routing has been proposed to increase resilience against network failures or improve security in Mobile Ad-Hoc Networks (MANETs). The Optimized Link State Routing (OLSR) protocol has been adopted by several multipath routing strategies. They implement Multipoint Relay (MPRs) nodes as a flooding mechanism for distributing control information. Ideally, the construction of multiple disjo...

A mobile ad hoc network (MANET) is a wireless network that uses multi-hop peer-to-peer routing instead of static network infrastructure to provide network connectivity. The network topology in a MANET usually changes with time. Therefore, there are new challenges for routing protocols in MANETs since traditional routing protocols may not be suitable for MANETs. In ad-hoc networks, nodes are not...

We report on a new wireless interface type for the OSPF routing protocol that greatly improves performance in multihop wireless networks. In this paper, we describe how to adapt OSPF to adequately handle wireless networks in a scalable manner. Our simulation-based study first illustrates that the operation of legacy OSPF routers in mobile ad hoc network environments can generate prohibitive amo...

Mobile Ad-hoc Networks consists of large number of mobile nodes having limited number of resources like energy, storage capacity, processing capabilities and so on. The energy of a mobile node in the MANET environment is the most critical factor as the life time of a MANET is based on the energy of the participating nodes. OLSR is one of the routing protocols used in the MANET environment to su...

—In this paper we discussed the application and the implementation of multipath routing and multiple description coding (MDC) extension of OLSR, called MP-OLSR. It is based on the link state algorithm and employs periodic exchange of messages to maintain topology information of the networks. In the mean time, it updates the routing table in an on-demand scheme and forwards the packets in multip...

Automatic discovery of services and resources is a crucial feature to achieve the expected user-friendliness in Mobile Ad-hoc Networks. Due to limited computing power, scarce bandwidth, high mobility and the lack of a central coordinating entity, service discovery in these networks is a challenging task. In this paper, we develop a service discovery protocol (Mercury) utilizing a combination of...

In this paper, we propose a component based methodology for modelling and design of wireless routing protocols. Componentization is a standard methodology for analysis and synthesis of complex systems. Throughout the paper, we use Optimized Link State Routing (OLSR) protocol as a case study to demonstrate effectiveness of our methodology. We focus on modelling of three main components: neighbor...

Trust is an interesting criterion for analyzing and comparing network protocols. The goal of this paper is to explicit the different types of trust relations between entities which exchange routing information and establish a routing infrastructure based on the OLSR protocol. One such entity assumes the other entities will behave in a particular way and the relations coming from this trust beha...