This paper presents the results from a performance evaluation on a Mobile IPv6 based test-bed composed of WLANs (Wireless Local Area Networks), MANETs (Mobile Ad-hoc Networks) and the Internet. Location management and handoff efficiency is measured in terms of session setup delay and handoff delay. The mobiles, connected as a MANET, employ the OLSR (Optimized Link State Routing) protocol for ro...

This paper investigates comprehensive operation and experimentation of an all-optical packet switching router with optical label swapping and reamplification and reshaping (2R) regeneration, capable of multihop operation and Internet protocol (IP)client interoperability. In particular, the experiment demonstrates successful packet switching and transport up to 11 hops with 10 9 bit-error rate a...

Ad hoc networks are characterized by multi-hop wireless connectivity, frequently changing network topology and the need for efficient dynamic routing protocols plays an important role. Comparison of the performance of two prominent on-demand routing protocols for mobile ad hoc networks: Dynamic Sequence Distance Vector (DSDV) Routing Protocol, Optimized Link State Routing (OLSR) Protocol. A det...

Vehicular Ad-hoc Network (VANET) is a specific class of Mobile Ad-hoc Networks (MANET) and asa main backbone for the future technology such as Smart City that facilitate ubiquitous communication. Based on the communication categories, VANETs is divided intovehicle-to-vehicle communication and vehicle-toinfrastructure communication using a wireless network.However, VANET implementation in the re...

Sensor localization obtained by estimating node positions is an essential technique for wireless sensor networks. Anchorfree localization (AFL) can estimate node positions without anchor nodes. However AFL does not work in an irregular networks. In this paper, we present an optimized link state routing (OLSR) -based localization (ROULA) that achieves desirable performance in dense irregular sen...

In this paper, an effort has been made to examine and compare the performance of the reactive and proactive adhoc routing protocols by employing OPNET Simulator according to increasing number of failed nodes in the network. In current study, a comparison of reactive routing protocols such as Distance Vector Routing (DSR), Ad Hoc On-Demand Distance Vector Routing(AODV) and proactive routing prot...

Ad hoc routing technology has been developed primarily for networks of mobile nodes. In many cases the operational life of a node will be limited by its power source, so power consumption can be a critical issue. All the layers of communication are coupled in power consumption. Ad hoc routing protocols may consume different amounts of power and their routing decisions may be conditioned. Power ...

A MANET network is a group of sensor nodes with wireless communication competency. Each node acts as router in the network. There are a number of issues which affect the reliability of Ad-hoc networks and limit their viability for different scenarios; lack of centralized structure within MANET requires that each individual node must act as a router and is responsible for performing packet routi...

This article focuses on technical issues related to quality of service provisioning at routing layer in ad hoc networks. It describes the design and implementation of a unified support for quality of service (QoS) metrics within the routing protocol OLSR. This is achieved by the extension of both signalling messages and route calculation process. Major benefits of the proposed approach are to a...

Offering secure and anonymous communications in mobile ad hoc networking environments is essential to achieve confidence and privacy, thus promoting widespread adoption of this kind of networks. In addition, some minimum performance levels must be achieved for any solution to be practical and become widely adopted. In this paper, we propose and implement HOP, a novel solution based on cryptogra...