Group key agreement protocols for wired networks are not applicable in ad hoc networks because of the 1-hop assumption of these protocols and the dynamic, multi-hop attributes of ad hoc networks. An authenticated group key agreement for ad hoc networks is proposed which arranges the group members in a cluster-based hierarchical spanning tree structure. The scheme uses Intra-cluster group key ag...

The evolution and existence of stable trust relations have been studied extensively in the context of social theory. However, reputation systems or trust schemes have only been recently used in the domain of wireless ad hoc networks. It has been shown that these schemes provide positive results as a self-policing mechanism for the routing of data in wireless ad hoc network security. This paper ...

The focus of this paper is to survey the use of EXOR routing scheme and routing metrics to be applied in hybrid wireless networks over the traditional unicast routing protocols used for mobile ad hoc networks. On performing a thorough analysis of various literatures, it is proposed that use of EXOR with ETX metric in hybrid wireless networks would give a better throughput than that of the tradi...

Broadcasting is a fundamental operation in any wireless networks, more so in wireless ad hoc sensor networks, where each sensor node has limited transmission range and battery power. Although broad-casting in wireless ad hoc sensor networks has many advantages but it can cause serious problems like—broadcast storm, which could cause a lot of contention, redundant, retransmission, collision and ...

Ad hoc networks are non-infrastructure networks which consist of mobile nodes. Since the mobile nodes have limited battery power, it is very important to use energy efficiently in ad hoc networks. In order to maximize the lifetime of ad hoc networks, traffic should be sent via a route that can be avoid nodes with low energy while minimizing the total transmission power. In addition, considering...

Ad hoc networks are a new-fangled wireless networking paradigm for mobile nodes. Unlike traditional wireless networks, ad-hoc networks do not rely on any fixed infrastructure. Instead, the mobile nodes rely on each other to share the information. The main dispute in designing these networks is their susceptibility to security attacks. The increase in number of applications of ad-hoc networks de...

Ad hoc wireless networking is currently a hot research area, especially because there is an increasing need for connectivity “anywhere” and, in particular, “anyhow.” While traditional networks have fixed nodes with wired connections (either optical fibers or copper lines), ad hoc wireless networks can be described as multi-hop wireless networks with mobile nodes. However, the mobility condition...

The general field of mobile ad hoc networking is still in its infancy. Particularly, the challenge of providing Quality-of-Service (QoS) support for ad hoc networks is an open problem and remains relatively uncharted territory. Providing a complete QoS solution for the ad hoc networking environment requires the interaction and cooperation of several components. These components include: (1) a Q...

Transmission control protocol (TCP), which provides reliable end-to-end data delivery, performs well in traditional wired network environments, while in wireless ad hoc networks, it does not perform well. Compared to wired networks, wireless ad hoc networks have some specific characteristics such as node mobility and a shared medium. Owing to these specific characteristics of wireless ad hoc ne...

Ad Hoc Networks are characterized by multi hop wireless connectivity, frequently changing network topology and the need for efficient dynamic routing protocols. In this project, we make a performance analysis of two of the protocols proposed for ad hoc networks using the extended ns-2 simulator Keywords— Ad Hoc Networks, Routing protocols, Global State Routing, Dynamic Source Routing