Mobile Ad Hoc Network (MANET) is collection of multi-hop wireless mobile nodes that communicate with each other without centralized control or established infrastructure. Nodes in MANETs are often collaborative for a particular task and have limited power. Congestion control and time delay is a key problem in mobile ad-hoc networks. In recent years, several routing protocols have been proposed ...

In this thesis, starvation is defined as the phenomena where a flow receives throughput persistently and severely lower than its reference rate. Throughout the thesis, I investigate the cause of starvation, explore its solution space, and present mechanisms to counter starvation in both ad-hoc and mesh networks where CSMA protocols are deployed as the medium access mechanism. I first show that ...

In inter-working multi-hop wireless networks, establishing resilient connectivity between source-destination node pairs is a major issue. The issues of connectivity in multihop wireless networks have been studied. However these analyses focused on network connectivity in ad-hoc networks. Since the next generation of wireless networks will be inter-working, an understanding of connectivity as it...

An ad hoc wireless network is an autonomous selforganizing system of mobile nodes connected by wireless links where nodes not in direct range communicate via intermediate nodes. Modern wireless devices, such as those that implement the 802.11b, 802.11a, 802.11g, and HiperLAN2 standards, utilize multiple transmission rates in order to accommodate a wide range of channel conditions. The use of mu...

This study investigates the potential of using transmission power control in wireless packet networks with differing number of hops between source and destination. Here we exploit the benefits of power control in the context of multi-hop wireless ad hoc type networks with a distributed media access control. For our investigations we choose several general ad hoc network topologies and studied t...

Wireless ad hoc networks enable over-the-air information exchange among (mobile) entities without a fixed infrastructure, and are very attractive for many commercial and military applications where pre-existing infrastructures are either infeasible or too expensive. However, this new form of communications poses new challenges to traditional networking architectures and protocols designed for w...

Ad hoc networks are multi-hop wireless networks where mobile devices communicate using a shared, low power, low bandwidth channel without any wired infrastructure: each node acts also as a router of its neighbors. Ad hoc networks protocol design is still a new and growing research area; there currently is an IETF Working Group working on the definition of a standard for such networks. Various p...

This thesis proposes and discusses solutions to enable network-layer mobility in wireless ad hoc access networks. The deployment of wireless access networks has made them ubiquitous and current research strives to make them pervasive. Users having wireless access to wired IP networks and the Internet are driving the demand for mobile and heterogeneous solutions. To enable all kinds of mobility ...

Intelligent Transportation Systems (ITS), which rely on vehicular ad hoc communication networks (VANETs), have the potential to alleviate road accidents and to save lives. Several use cases to VANETs safety applications have been proposed. Most of these applications use multi-hop broadcasting communications to disseminate safety information as far as needed in zones of relevance. A wide variety...