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Security is one of the core challenges especially for ICT in disaster Recovery. Sensitive data is transmitted via insecure links. Furthermore, there may be competing interests. Thus, there is a high probability of disturbance or eavesdropping of communication. However, the hierarchical structure of networks in such scenarios can be exploited for security purposes. Based on this, we developed the Topology...
We investigate the cooperative routing problem in the single-source single-destination systems for the delay-sensitive case by using the proposed “Cooperative Graph” approach. The “Cooperative Graph” enumerates all possible cooperative routes in the problem. In a “Cooperative Graph”, a vertex represents a route. For each route, optimal scheduling is required under a total end-to-end duration constraint...
Wireless Mesh Networks (WMNs) is a promising technology for backhaul wireless connectivity in user premises due to its multi-hop nature, multi-radio multi-channel capabilities and stable power supplies. With proliferation of new and advanced access technologies, future WMN's will bean integrated paradigm to provide seamless and ubiquitous connectivity to multi interface end user devices. Co-existence...
Channel assignments in a wireless cellular network is a discrete-time event process involving the correct mapping of the channels to the caller-receiver pairs. The channels are assigned in such a way that they are constantly reused once a particular assignment is completed. In this work, a dynamic single-row routing technique is proposed to handle channel assignments for wireless cellular networks...
In this paper, an innovative scheduling is designed for multi-hop multicast in wireless mesh networks, with utilization of concurrent transmission strategy. Since the performance of a multicast mechanism is constrained in a wireless setting due to the interference among local wireless transmissions, we analyze the interference relationships firstly among the transmissions by introducing a graph transformation...
Single channel is a severe capacity bottleneck in wireless mesh networks (WMNs). Multiple channels enhance the wireless network capacity by simultaneous transmissions and decrease the interference among nodes. Due to the scarcity of non-overlapped channels, the way of assigning channels becomes extremely important for throughput optimization in WMNs. This article presents a channel assignment algorithm,...
Observing that simplicity implies efficiency and scalability, this paper proposes a position-based deployment and routing strategy, and then gives a concrete approach under this strategy, for the emerging wireless mesh networks with multiple radios and directional antennas. The main idea of this strategy is to deploy the mesh network in certain kind of geometric graph and then design a position-based...
Efficient operation of wireless networks requires distributed routing and scheduling algorithms that take into account interference constraints. Recently, a few algorithms for networks with primary- or secondary-interference constraints have been developed. Due to their distributed operation, these algorithms can achieve only a guaranteed fraction of the maximum possible throughput. It was also recently...
Robust and efficient design of networks on a realistic geographical space is one of the important issues to realize dependable communication systems. In this paper, based on a percolation theory and a geometric graph property, we investigate it in the following viewpoints: (1) network evolution according to a spatially inhomogeneous population, (2) optimal modality of degrees for the tolerant connectivity...
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