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Zhao J.-J.,Hebei University of Engineering | Zhao J.-J.,Handan Key Laboratory of Optical Fiber Communication and Broadband Access Technologies | Gu Z.-Q.,Hebei University of Engineering | Gu Z.-Q.,Handan Key Laboratory of Optical Fiber Communication and Broadband Access Technologies | And 6 more authors.
Zidonghua Xuebao/Acta Automatica Sinica | Year: 2015

Considering flow routing rate, clustering rules, and resource consumption of network bandwidth, in this paper, we propose a routing algorithm based on topology control and resource allocation in heterogeneous wireless sensor networks. The algorithm establishes a model on flow rate balance in the network layer according to the rate allocation mechanism of the cluster heads and member nodes. In the link layer, an interference model is applied to analyze the sharing spectrum behavior and the resource reconfiguration. By introducing a bandwidth scaling factor ρ, the band is re-divided into several sub-bands, aiming at maximizing the utilization efficiency of frequency band resource. Based on the cross-layer design framework, we develop a mixed-integer nonlinear programming optimization problem to obtain the optimal clustering results and resource allocation scheme, while considering the networks topology and resource allocation. We evaluate the performance in a given network topology. The results show that the proposed routing algorithm can obtain the optimum match results and the optimal route while utilizing spectrum efficiently. Copyright © 2015 Acta Automatica Sinica. All rights reserved. Source


Zhao J.-J.,Hebei University of Engineering | Zhao J.-J.,Handan Key Laboratory of Optical Fiber Communication and Broadband Access Technologies | Guo K.,Hebei University of Engineering | Guo K.,Handan Key Laboratory of Optical Fiber Communication and Broadband Access Technologies | And 4 more authors.
Tongxin Xuebao/Journal on Communications | Year: 2012

For the accurate assessment of physical impairments, the suppression or enhancement effect of self phase modulation (SPM) on group velocity dispersion (GVD) were analyzed. Then, a pulse width model based on their combined effects on signal distortion was proposed. This model considered the effects of combined physical impairments, and it was applied in the simulation of the impairment-aware routing and wavelength assignment (IA-RWA) algorithm. The results indicate that comprehensive consideration of the effects caused by combined physical impairments is conductive to accurately avoid more serious physical impairments during routing and reduces blocking rate. Source

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