基于区块链的视频流边缘计算卸载方案研究

Research on Blockchain-based Edge Computing Offloading Scheme for Video Streaming

传统多媒体物联网难以满足对时延敏感和计算密集型视频处理任务的需求,且无法保证任务处理过程中的安全性和隐私性。为此,将移动边缘计算(Mobile Edge Computing, MEC)与视频流结合,提出一种基于区块链的MEC视频流网络架构(B-SMEC)。考虑斯塔克尔伯格动态博弈优化移动边缘服务器(Mobile Edge Servers, MES)、视频服务提供商(Video Service Providers, VSPs)和用户之间的视频资源分配,在满足用户动态视频服务请求的同时,实现MES与VSPs的效益最大化。应用区块链技术记录整个资源交易过程,保护其安全性和隐私性。仿真实验验证了该方案的有效性。

Traditional multimedia IoT is difficult to meet the demand for delay-sensitive and computationally intensive video processing tasks,and cannot guarantee the security and privacy during task processing.For this reason,a blockchain-based MEC video streaming network architecture(B-SMEC)was proposed by combining Mobile Edge Computing(MEC)with video streaming.Based on the Stackelberg dynamic game to optimize the video resource allocation among mobile edge servers(MES),video service providers(VSPs)and users,the benefits of MES and VSPs were maximized while satisfying users'dynamic video service requests.Blockchain technology was applied to record the whole resource transaction process to protect its security and privacy.The effectiveness of the proposed scheme is verified through simulation experiments.