Electric Power ›› 2023, Vol. 56 ›› Issue (8): 77-85,98.DOI: 10.11930/j.issn.1004-9649.202304069

• Technology and Application of Low Power WSN for Electric Power Grid Equipment State Sensing • Previous Articles     Next Articles

Resource Allocation for Edge-enhanced Distributed Power Wireless Sensor Network

WU Gang1, ZHOU Jinhui1, LI Hui2   

  1. 1. State Grid Zhejiang Electric Power Corporation Research Institute, Hangzhou 310014, China;
    2. Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, China
  • Received:2023-04-19 Revised:2023-07-08 Accepted:2023-07-18 Online:2023-08-23 Published:2023-08-28
  • Supported by:
    This work is supported by Science and Technology Project of SGCC (Research on Key Technologies for Intelligent Vulnerability Mining of Power IoT Terminals, No.5700-202219198A-1-1-ZN).

Abstract: Aiming at the problems of high access latency, high energy consumption, and deteriorating user service quality in traditional wireless power sensor networks, the mobile edge computing (MEC) is introduced to establish a joint optimization model of access latency and network energy consumption, with objective to minimize the joint function of latency and energy consumption. Then, the total resource processing capacity of the central unit/distribution unit is determined by controlling the waiting latency in the load transfer process under the common constraints of the remaining resources of the RF remote unit, the load queuing latency, and the remaining resources of the central unit/distribution unit. And then, based on the resource utilization of the MEC server, the energy consumption of the sensor devices is reduced by reducing the number of active MEC servers. The influence of the weight coefficient on the objective function and the comparison of the algorithm under different traffic flows and times are analyzed. The results show that the proposed allocation mechanism is better than other comparison algorithms in reducing access latency and energy consumption. Therefore, this mechanism can effectively improve the communication quality of the sensors and the efficiency of the system, extend the life of the sensor equipment, and reduce the network cost.

Key words: power wireless sensor networks, mobile edge computing, energy consumption aware, delay aware, load balancing