Optimal distributed resource allocation in a wireless sensor network for control systems

作     者：MAO Jian-lin WU Zhi-ming 

作者机构：Department of Automation Shanghai Jiao Tong University Shanghai 200240 China School of Information Engineering and Automation Kunming University of Science and Technology Kunming 650093 China 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2007年第8卷第1期

页      面：106-112页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

基　　金：Project (Nos. 60074011 and 60574049) supported by the National Natural Science Foundation of China 

主　　题：Wireless sensor networks (WSN) Distributed resource allocation Control systems Optimization. 

摘      要：Wireless technology is applied increasingly in networked control systems. A new form of wireless network called wireless sensor network can bring control systems some advantages, such as flexibility and feasibility of network deployment at low costs, while it also raises some new challenges. First, the communication resources shared by all the control loops are limited. Second, the wireless and multi-hop character of sensor network makes the resources scheduling more difficult. Thus, how to effectively allocate the limited communication resources for those control loops is an important problem. In this paper, this problem is formulated as an optimal sampling frequency assignment problem, where the objective function is to maximize the utility of control systems, subject to channel capacity constraints. Then an iterative distributed algorithm based on local buffer information is proposed. Finally, the simulation results show that the proposed algorithm can effectively allocate the limited communication resource in a distributed way. It can achieve the optimal quality of the control system and adapt to the network load changes.