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In wireless networks, network topology may change at any time. Therefore, topology control is one of the effective methods to get and keep the desired topology performance. The most existing topology control methods assume that nodes are altruistic. Although there are some game-based topology control schemes to stimulate cooperation between nodes, they only consider a single objective (e.g., energy...
Centrality metrics of complex networks are often used to study vulnerability of networks. Thus, node-importance research are with theoretical significance and wide-spread applications. Based on neighbors average degree, this paper presents a novel approach, which combines degree of a node and the average degree of its neighbors to measure node importance. By cascading failures experiments on real-world...
Topology control is one of the most fundamental problems in wireless sensor networks (WSNs). It is of great importance for prolonging network lifetime, reducing radio interference and energy consumption, increasing the efficiency of media access control (MAC) protocols and routing protocols, among other things. In this paper, the problem is transformed into a model of multi-criteria degree constrained...
Most ISPs rely on their upstream providers in achieving global reachability, thus they tend to make backup upstream links for the purpose of improving their own resilience. Yet, the Internet AS topology does not entail as much redundancy as it is widely thought, e.g., in our observation, 23.6% of all ASes only have single provider. Moreover, even though an AS has multiple upstream links, if all its...
The scale-free networks reveals the essential characteristics of networks, which can be used to describe many realistic networks, which has a common features: The minority vertices have massive connections, the number of which may reach as high as several million, but the majority vertices only have few connections, which is one of characteristics of scale-free networks. So the scale-free networks...
In this paper we have considered the channel assignment problem in multi-channel multi-radio wireless mesh networks. The problem is to assign channels to links in the network with the original topology preservation, and aim at minimizing the overall network interference which is proved to be NP-hard. We have first illustrated that the conversion from the channel assignment problem to the max k-cut...
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