نتایج جستجو برای: پروتکل olsr

تعداد نتایج: 4873  

2000
Ying Ge Thomas Kunz Louise Lamont

In an ad-hoc network, all communication is done over wireless media, without the help of wired base stations. While many routing protocols have been developed to find and maintain routes based on a best-effort service model, quality-of-service (QoS) routing in an ad-hoc network is difficult because the network topology may change constantly and the available state information for routing is inh...

Journal: :Annales des Télécommunications 2014
Nadeem Javaid Ayesha Bibi Akmal Javaid Zahoor Ali Khan Kamran Latif M. Ishfaq

In this paper, we propose a new Quality Link Metric (QLM), “Inverse Expected Transmission Count (InvETX)” in Optimized Link State Routing (OLSR) protocol. Then we compare performance of three existing QLMs which are based on loss probability measurements; Expected Transmission Count (ETX), Minimum Delay (MD), Minimum Loss (ML) in Static Wireless Multi-hop Networks (SWMhNs). A novel contribution...

2003
Seyed Jamshid Mousavi Kumaraswamy Ponnambalam Fakhri Karray

The methods of ordinary least-squares regression (OLSR), fuzzy regression (FR), and adaptive network fuzzy inference system (ANFIS) are compared in inferring operating rules for a reservoir operations problem. Dynamic programming (DP) is used to provide the input-output data set to be used by OLSR, FR, and ANFIS models. The coefficients of an FR model are found by solving a linear programming (...

In mobile ad hoc networks, the absence ofinfrastructure and the consequent absence of authorizationfacilities impede the usual practice of establishing a practicalcriterion to distinguishing nodes as trusted and distrusted.Since all nodes in the MANETs would be used as router inmulti-hop applications, secure routing protocols have vital rulein the security of the network. So evaluating the perf...

Journal: :Computer Communications 2013
Asmaa Adnane Christophe Bidan Rafael Timóteo de Sousa Júnior

The trust is always present implicitly in the protocols based on cooperation, in particular, between the entities involved in routing operations in Ad hoc networks. Indeed, as the wireless range of such nodes is limited, the nodes mutually cooperate with their neighbors in order to extend the remote nodes and the entire network. In our work, we are interested by trust as security solution for O...

2013
Armstrong Kadyamatimba Zenzo Ncube

-Wireless Mesh Networks (WMNs) are the set of wireless nodes that can communicate with each other and forwarding each other’s packets. WMNs are multi-hop networks consisting of routers, gateways and mobile nodes, they aim at guarantee connectivity. They act as a key technology for next generation WMNs due to their low cost and relative ease of deployment they are an attractive paradigm and are ...

2009
Tom Leclerc Adrian Andronache Laurent Ciarletta Steffen Rothkugel

Service discovery is one of the most fundamental building blocks of self-organization. While mature approaches exist in the realm of fixed networks, they are not directly applicable in the context of MANETs. We investigate and compare two different protocols as basis for service discovery, namely OLSR and WCPD. OLSR is a proactive routing protocol while WCPD is a path discovery protocol integra...

2016
Bouchra Marzak Hicham Toumi Elhabib Benlahmar Mohamed Talea

In this paper, the performance of routing protocols DSDV, OLSR and AODV using performance metrics like Packet Delivery Ratio, Average End to End delay, Packet Loss Ratio and Average Throughput within Vehicular ad hoc networks for CBR applications over UDP connection has been analyzed. Network Simulator (NS-3.19) along with mobility model generated through Simulation of Urban Mobility (SUMO) too...

2012
Mohamed Amnai

Mobile Ad-Hoc network is a collection of mobile nodes in communication without using any fixed infrastructure. As the multiservice traffic compressors used today's grows, we need to verify if the available protocols support their applications. Therefore, in this paper we have studied the impact of multiservice traffic (MPEG-4, H.264) on the performances of Optimized Link State Protocol (OLSR) p...

2007
Ignacy Gawędzki Khaldoun Al Agha

The OLSR protocol, as specified in RFC 3626 [1], a proactive, table-driven routing protocol, is a distributed algorithm that relies on all participating nodes obeying to a set of rules. Those rules could be broken easily by some malicious nodes in order to gain some advantage in the network or simply disrupt its proper operation. In this paper, we present a method to detect packet loss on links...

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