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Network management is a critical component of every network manager''''s job responsibility. This job gets more complicated as the complexity of the network grows. This complexity can be in the form of different manufacturers of deployed devices or added tiers to the network, such as an Ad Hoc Network or a Wireless Sensor Network. Automating, or semi-automating, the data analysis required in network...
Green ICT (Information and Communication Technology) is a new focus with the goal of saving energy by optimizing mobile network communications and ultimately protecting the natural climate. Here we consider the design of vehicular ad-hoc networks (VANETs) to reduce energy consumption due to communications. Based on a realistic transport traffic scenario on a motorway, rdquoM4rdquo in UK, this paper...
Vehicle communication (VC) represents an interesting item for both research and industry communities, since it supplies an efficient way to improve the transport quality. However, VC is confronted with a number of new challenges, in particular due to the extremely dynamic network topology and the large variable number of mobile nodes. To overcome these problems, an effective solution is to define...
Providing security and privacy to users are critical in wireless mesh networks (WMNs). In this paper, a distributed security architecture is introduced to manage the mesh clients and a secure routing scheme that preserves the privacy of the end-users is proposed. In order to maximize routing efficiency, key indexing is used and symmetric cipher is employed in most part of the proposed scheme to reduce...
Nodes in energy-efficient ad-hoc wireless networks can benefit more of new ad-hoc services, as well as, can support better new emerging ad-hoc applications. In this paper, we introduce an approach to achieve the energy efficiency based on both optimal transmission range and topology management of ad-hoc wireless networks. We derive the relationship between the optimal transmission range (optimal grid...
Mobile ad hoc networks (MANETs) have many well-known applications in military settings as well as in emergency and rescue operations. However, a lack of infrastructure and centralized control make MANETs inherently insecure, and therefore specialized security services are needed for their deployment. Self-certification is an essential and fundamental security service in MANETs. It is needed to securely...
This paper presents two novel mechanisms for the OLSR routing protocol, aiming to improve its energy performance in Mobile ah-hoc Networks. Routing protocols over MANET are an important issue and many proposals have been addressed to efficiently manage topology information, to offer network scalability and to prolong network lifetime. However, few papers consider a proactive protocol (like OLSR) to...
Adhoc networks are self-configurable networks with dynamic topologies. All involved nodes in the network are responsible for management activities. In multihop adhoc environment, it is difficult to maintain paths through intermediate nodes, due to the mobility of nodes, nature of radio transmission etc. In the absence of an authentication mechanism, malicious nodes can easily corrupt route tables,...
The advances on wireless mesh networks are shifting the communications paradigm, where users can benefit from their cooperation to exchange information and make use of the spectrum space, forming wireless neighbourhood communities where resources are shared and services are distributed. This paper presents a modular cross-layer community management architecture, which considers that communities are...
A mobile ad hoc network (MANET) is an architecture without fixed infrastructure or centralized administration. However, when a message is transmitted in a multicast group, without any security infrastructure, it may be attacked or corrupted. In this paper we propose a new key management mechanism to support secure group multicast communications in ad hoc networks. The scheme proposes a dynamic construction...
Broadcasting is an effective means for disseminating information in wireless ad hoc networks. In this paper we propose a novel distributed broadcasting protocol in wireless ad hoc networks, which is based on an highly efficient metric for characterizing the importance of a node, with respect to its contribution in covering the local neighborhood. The protocol is reliable and achieves small communication...
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