作者：Zhehao Li, Lei Shi, Xu Ding, Yuqi Fan, Juan Xu

发表刊物：WASA 2021

年份：June 2021

摘要：In edge computing environment, edge servers are generally more closer to edge devices which can guarantee time sensitive tasks be completed under their strict requirements. However, with the rapid increase of edge devices and the limited computing resources of edge servers, this guarantee is becoming more and more difficult. In this paper, by using two physical layer techniques, we try to give communication tasks more opportunities for executing under edge computing environment. In specific words, we propose a priority task scheduling scheme based on coherent beamforming (CB) technique and successive interference cancellation(SIC) technique. CB technique give edge devices the chance to be transmitted to distant edge servers, and SIC technique give communication tasks more chance to be received by edge servers. However, these two techniques need some strict conditions for realizing, and if we consider the computing work and the communicating work simultaneously, the problem will become very complex. We first build the system model and analyze it, and show the model a NP-hard problem and cannot be solved directly. Then in our algorithm, we first determine the task transmission of each time slot in turn, and set the fitness threshold so that each task can select the most suitable edge server. After tasks arrive at servers, we insert them into task queues according to their priorities. In simulations, we compare our scheme with other three schemes. Simulation results show that our scheme can improve the task completion rate and reduce completion delay.

参考文献拷贝字段：Zhehao Li, Lei Shi, Xu Ding, Yuqi Fan, Juan Xu. A Priority Task Offloading Scheme Based on Coherent Beamforming and Successive Interference Cancellation for Edge Computing [C]. The 16th International Conference on Wireless Algorithms, Systems, and Applications (WASA), Nanjing, China, June 25-27, 2021: 416-428