Clustering in Mobile Ad Hoc Networks (MANETs) has much better utilization compared to the conventional system. Other than the highly active and unbalanced nature of MANETs makes it hard for the cluster based routing protocols to split a mobile network into clusters and determination of cluster heads for each cluster. In this paper, we analyze and compare some of existing works on cluster based ...

Multimedia applications require certain QoS guarantees to be met in order to function properly. QoS requirements for multimedia transmission include bandwidth guarantees and temporal guarantees (delay and jitter). Existing routing protocols on MANeTs are not adequate enough to deal with these necessities imposed by multimedia traffic. In this article, an adaptation of MPLS is proposed for MANeT...

MANETs are considered to be an important network type in the near future. Nodes in MANETs are often collaborative for a particular task and have limited power. Multicasting can efficiently support data transmissions and thus is very suitable for MANETs. There have been a number of multicast routing protocols which are classified into two types: tree-based protocols and mesh-based protocols. We ...

In this paper, a representative set of QoS models and QoS-aware on-demand routing protocols are reviewed with emphasis on their ability to support QoS in mobile ad-hoc networks (MANETs) possibly used in WSNs. In particular IntServ, DiffServ, FQMM, and SWAN QoS models are reviewed followed by different QoS-aware on-demand routings in MANETs from different perspectives such as the challenges, cla...

MANET (Mobile Ad hoc Network) is an ad network that may be constructed on demand. Due to its dynamic nature, it allows nodes in the communicate with each other without use of any infrastructure. When compared conventional wireless networks, MANET's on-demand setup makes more popular. Conventional networks require a central authority for overall system operations, while infrastructure-less and s...

Mobile ad-hoc networks (MANETs) have no fixed infrastructure, so all network operations such as routing and packet forwarding are done by the nodes themselves. However, almost all common existing routing protocols basically focus on performance measures regardless of security issues. Since these protocols consider all nodes to be trustworthy, they are prone to serious security threats. Wormhole...

This paper provides a review of the different Cross Layer Design and protocol tuning approaches that may be used to meet a growing need to support inelastic soft real-time streams in MANETs. These streams are characterised by critical timing and throughput requirements and low packet loss tolerance levels. Many Cross Layer approaches exist either for provision of QoS to soft real-time streams i...

We present a process calculus for the analysis of Mobile Ad Hoc Networks (MANETs) and their protocols. Our calculus captures the ability of a MANET node to broadcast a message to any other node within its physical transmission range, and to move in and out of the transmission range of other nodes in the network. In order to reason about cost-effective ad hoc routing protocols, we also model uni...

Both Mobile Ad hoc Networks (MANETs) and Peer-to-Peer (P2P) networks are decentralized selforganizing networks with a dynamic topology, used to route queries in a distributed environment. However, whilst MANETs are composed of resource-constrained devices susceptible to faults, P2P networks are popular for their resilience and fault-tolerance. This makes P2P networks the ideal data sharing syst...

Security is an essential requirement in mobile ad hoc network (MANETs). Compared to wired networks, MANETs are more vulnerable to security attacks due to the lack of a trusted centralized authority and limited resources. Attacks on ad hoc networks can be classified as passive and active attacks, depending on whether the normal operation of the network is disrupted or not. In this paper, we are ...