Minimum Delay Allocation Strategy for Distribution Internet of Things

Accelerated by the concept of the prominent Internet of things, various power line systems are envisioned to be integrated into wireless communication networks to enhance the quality of service of ubiquitous users. In order to improve the delay performance of these integrated networks, intensive computation tasks can be partly offloaded to the network edge and processed by edge devices. In this paper, we model a collaborated cloud and edge network consists of power line systems and wireless communications, considering the terrible transmission environment of offloading devices. Under the hierarchical offloading strategy proposed in this work, a joint delay optimization problem is formulated and solved with the constraints of network computation capability. Finally, numerical results demonstrate that the proposed scheme shows superiority to other benchmark schemes as regards to minimizing the delay of the end equipments.

I. Introduction

With the continuous progress and the development of power line communication technology and other technologies, distribution networks have evolved from simple power network to intelligent energy information integration [1]. However, many strategy such as the protocol and transmission mode used in the distribution networks will greatly deteriorate the quality of experience of end users. Especially, the data computation delay is the key factor that affects the quality of user experience [2].