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The links in an ad hoc or wireless mesh network are normally kept alive by the exchange of beacon-messages between neighboring nodes. These beacons are prone to collisions with traffic from hidden nodes. If several beacons are lost due to overlapping transmissions, the node expecting the beacons erroneously assumes that the link is down. This is called an apparent link-failure. This paper provides...
The wireless mesh network (WMN) backbone is usually comprised of stationary nodes but the transient nature of wireless links results in changing network topologies. Topology Control (TC) aims to preserve network connectivity in ad hoc and mesh networks and an abundance of theoretical results on the effectiveness of TC exist. Practical evaluations of TC schemes that provide gradual transceiver power...
Multihop wireless mesh networks have emerged as the next generation in wireless network technology. This is due to the advantages provided by the mesh network technology. WMNs provides ease of installation, cost effective deployments, high level of scalability, wide coverage area and capacity, network flexibility and self-configuration capabilities. However, despite these advantages, many research...
As wireless mesh networks become more popular, there exists a need to provide centralized management solutions, which facilitate network administrators to control, troubleshoot and collect statistics from their networks. Managing wireless mesh networks poses unique challenges due to limited bandwidth resources and dynamic channel quality. A robust management solution should function despite network...
Wireless Mesh Networks (WMNs) are dynamically self-organized and self-configured, with the nodes in the network automatically establishing an ad hoc network and preserving the mesh connectivity. There are several features which might help to design an efficient routing protocol suitable for wireless mesh networks such as improved performance metrics, link or path optimization, mobility management,...
We present in this paper a scheme of reliable transmission of H.264/AVC video over wireless mesh networks (WMNs) based on an opportunistic multi rate (OMR) IEEE 802.11 MAC strategy. This OMR strategy employs the channel reservation control packets at the MAC layer to exchange timely channel quality estimation (CQE) information for an adaptive adjustment of spectrally efficient transmission rate at...
During an emergency response, access to a reliable communication infrastructure is required to exchange accurate information in a timely manner. Various communication technologies have been deployed for emergency response; however communication between different first response organizations has always been a problem. This is due to either broken networks or lack of knowledge regarding the channel...
A mesh network allows nodes or access points to communicate with each other without being routed through a central switch point, eliminating centralized failure and providing self-healing & self-organization. Although decisions on traffic are made locally, the system can be managed globally. In this paper, a preliminary study on Wireless Mesh Networks (WMNs) management is presented, pointing out...
Wireless mesh networks (WMNs) have gained a lot of attention recently. Features such as self-configuration, self-healing and the low cost of equipment and deployment make WMN technology a promising platform for a wide range of applications. Traditional ad-hoc routing protocols are typically used to deal with the dynamic nature of these networks, which is mainly due to mobility. However, these protocols...
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