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With the WiFi becoming more and more popular over the last few years, the study on the technology of indoor positioning based on WiFi is given more and more attention. Being specific to the problem that not all the clustered reference points(RPs) of the traditional clustering algorithm have geometric proximity in indoor positioning, this paper puts forward the affinity propagation presentation(AP)...
Focusing on the application of mixed data fuzzy clustering in network monitoring, based on a dynamic growth and delete self-organizing maps model (DGDSOM), an algorithm of fuzzy dynamic growth and delete self-organizing maps (FDGDSOM) is proposed. This algorithm introduces the triggering system and designs the triggering module, and makes the intelligent judgment and decision according to the real-time...
To obtain a satisfied performance of wireless mesh networks(WMN), an optimization method of backbone wireless mesh network deployment for various applications is essential. In this paper, a novel optimizing deployment algorithm based on directional antennas and delaunay triangulation to reduce the wireless signal interference for the backbone wireless mesh network is presented. Firstly, directional...
As a new network addressing and routing scheme, anycast has been defined as a standard communication model in IPv6. The multiple QoS constrained anycast routing problem is a nonlinear combination optimization problem, which is proved to be a NP complete problem. This paper studies anycast routing technology with multiple QoS constraints and proposes a multiple QoS anycast routing algorithm based adaptive...
Anycast is a new ldquoone-to-one-of-manyrdquo communication method in IPv6 networks. QoS anycast routing problem is a nonlinear combination optimization problem, which is proved to be a NP complete problem. Based on improved particle swarm optimization algorithm, an anycast routing algorithm with multiple QoS constraints is proposed. This algorithm uses a special add operator to make the worst path...
Although the existing QoS-supported MAC Protocols can provide QoS guarantee at some degree, most of them sacrifice the performance of best-effort traffic. An adaptive QoS-supported backoff mechanism for MAC Protocol is proposed, in which nodes can adjust their backoff algorithm according to the network load state they measured. So the proposed adaptive backoff algorithm can improve the link utility...
Anycast communication is a new Internet service defined in IPv6, and it can make a host communication with the one "nearest" member in a group of servers. The anycast routing problem with multiple QoS constrained is known to be NP-complete problem and we can't get satisfying results when using the precise method in polynomial time. In this paper, an improved ant colony optimization algorithm...
It is assumed that the available bandwidth is known in the existing QoS routing protocols for mobile ad hoc networks. And the QoS routing protocols focus mainly on how to discover QoS satisfied route and minimize overheads when setting up the route. The existing bandwidth estimation methods haven't taken flow types into consideration, so the estimated results are not accurate. In this paper, we propose...
Data transmitted in large scale dense wireless sensor networks (WSN) is often highly spatial correlated, and filtering out the spatial redundancy has been proved to be effective in energy conserving. At the same time, according to the results of Min Dong, different MAC mechanisms should be applied to different SNR regimes. But no existing MAC schemes design exploiting spatial correlation take this...
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