Vehicular Ad hoc Networks (VANET) exhibit highly dynamic behaviour with high mobility and random network topologies. The performance of Transmission Control Protocols (TCP) on such wireless ad hoc networks is plagued by a number of problems: link failures, scalability, multi-hop data transmission and data loss. In this work, we make use of the vehicle’s movement pattern, density, velocity and v...

Position and orientation information of individual nodes in ad hoc networks is useful for both service and application implementation. Services that can be enabled by availability of position include routing and querying. At application level, position is required in order to label the reported data in a sensor network, whereas position and orientation enable tracking. Nodes in an ad hoc networ...

In this paper, a multihop routing extension to IEEE 802.11 is presented. Multihop extension preserves the traditional single-hop networks where the service infrastructure is constructed by many access points but it also adds the flexibility of ad hoc networks where wireless transfer through mobile stations is allowed in multiple hop. Multihop extension can reduce the number of required access p...

In this paper, we investigate the impact of mobility on the performance of multi-hop wireless ad hoc and sensor networks. We introduced some models of mobility in these networks and studied their behavior in realistic situations. It concerns the basic relationship between link length and message transmission. Additionally, we take into consideration the probability of successful transmission in...

A Congestion control is a key problem in mobile adhoc networks. The standard TCP congestion control mechanism is not able to handle the special properties of a shared wireless channel. Many approaches have been proposed to overcome these difficulties. ideas and show their interrelations. mobile agent based congestion control Technique routing is proposed to avoid congestion in ad hoc network. S...

By exploring the intelligent cooperation of unmanned aerial vehicle (UAV) swarms, formed flying ad-hoc networks (FANETs) can support a variety collaborative operations with real-time communications in emergency scenarios. To reduce prohibitively high routing overhead connectivity guaranteed multi-hop links, UAV swarms construct virtual backbone network (VBN) based on graph-theoretical <inline-f...

Ad hoc networks are characterized by multi-hop wireless connectivity and frequently changing network topology. Forming security association among a group of nodes in ad-hoc networks is more challenging than in conventional networks due to the lack of central authority, i.e. fixed infrastructure. With that view in mind, group key management plays an important building block of any secure group c...

Neighbor Discovery (ND) is an important pre-requisite for a typical Wireless Ad-hoc Network for achieving self-organization and multi-hop communications which subsequently affect routing, MAC and topology control protocols. Reliability, Resource Efficiency and Responsiveness could be termed as important performance parameters for a typical Neighbor Discovery protocols. This paper attempts to re...

This demonstration presents AdSocial, a software platform supporting social network applications in ad hoc networks. AdSocial targets small-scale scenarios such as friends playing a game on the train or co-workers sharing calendar information. Moreover, AdSocial is specifically designed to run on resource-constrained mobile devices, such as mobile phones. By using a simple and efficient data pi...