Strip-based deployment with cooperative communication to achieve connectivity and information coverage in wireless sensor networks

Wei Cheng,Yong Li,Hui Wang,Xiaolin Lu,Lei Zhong

doi:10.1177/1550147719884887

Abstract

Coverage and connectivity in wireless sensor network have been studied extensively in existing research works with physical and information coverage. The optimal deployment to achieve both information coverage and connectivity, on arbitrary values of the ratio of rc and rs, has been studied in previous work; meanwhile, the extended strip-based deployment based on information coverage is also studied. Either information coverage or cooperative communication could exploit collaboration of sensor nodes to improve the efficiency of deployment, while how good is strip-based deployment with both information coverage and cooperative communication is worth to be measured when the value of rc/ rs is varied. In this article, the relationship between the density of sensors needed to achieve physical or information coverage and connectivity and the variety of rc/ rs is derived in closed form for strip-based deployment of wireless sensor networks with cooperative communication. Then, a summary of different combinations of coverage and connectivity is provided, that physical or information coverage with or without cooperative communication could be employed to achieve full coverage and connectivity for strip-based deployment. Finally, some new strategy could be proposed based on the fusion of physical and information coverage to improve strip-based deployment. Some numerical results are provided to show the efficiency of all schemes to help researchers design more effective deployment schemes.

Highlights

Coverage and connectivity are critical issues for research on wireless sensor network (WSN).[1,2,3,4,5,6,7,8] The coverage issue normally depends on the sensing model of sensors, which has been studied in existing research works
We focus on strip-based deployment for information coverage and cooperative connectivity in WSNs, with arbitrary values of rc/rs, and propose some enhanced scheme for strip-based deployment
The main contributions of this article are the following: 1. For strip-based deployment of WSNs with CC, the relation between rc/rs and density of sensors to achieve physical or information coverage and connectivity is derived in closed form, compared with that without CC

Summary

Introduction

Coverage and connectivity are critical issues for research on wireless sensor network (WSN).[1,2,3,4,5,6,7,8] The coverage issue normally depends on the sensing model of sensors, which has been studied in existing research works. One commonly used model is physical coverage, in which a sensor would cover a disk region centered on it with a radius as its sensing range.[1,2,3] the other type is that sensing accuracy might be dependent on the distance,[9] whereas each point in the field could be determined by the sensing intensity that could be measured by its nearby sensors. Every point could be deemed to be covered with different levels of sensing intensities based on this sensing model.

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Summary of different combinations

Conclusion