摘要
针对应急物联网(EIoT)超低时延服务需求,设计了面向超低时延传输应急物联网的多切片网络架构,提出EIoT切片资源预留和多异构切片资源共享与隔离的方法框架。所提框架采用深度强化学习方法实现实时异构切片间资源需求的自动预测与分配,切片内用户资源分配建模为基于形状的二维背包问题并采用启发式算法数值求解,从而实现切片内资源定制化。仿真结果表明,基于资源预留的方法能够使EIoT切片显式保留资源,提供了更好的安全隔离级别;深度强化学习能够保证资源预留的准确和实时更新,有效兼顾资源利用率和切片差异化服务质量要求。与4个已有算法对比表明,Dueling DQN具有更好的性能优势。
Based on the requirements of ultra-low latency services for emergency Internet-of-things(EIoT)applications,a multi-slice network architecture for ultra-low latency emergency IoT was designed,and a general methodology framework based on resource reservation,sharing and isolation for multiple slices was proposed.In the proposed framework,real-time and automatic inter-slice resource demand prediction and allocation were realized based on deep reinforcement learning(DRL),while intra-slice user resource allocation was modeled as a shape-based 2-dimension packing problem and solved with a heuristic numerical algorithm,so that intra-slice resource customization was achieved.Simulation results show that the resource reservation-based method enable EIoT slices to explicitly reserve resources,provide a better security isolation level,and DRL could guarantee accuracy and real-time updates of resource reservations.Compared with four existing algorithms,dueling deep Q-network(DQN)performes better than the benchmarks.
作者
孙国林
欧睿杰
刘贵松
SUN Guolin;OU Ruijie;LIU Guisong(School of Computer Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;Zhongshan Institute,University of Electronic Science and Technology of China,Zhongshan 528402,China)
出处
《通信学报》
EI
CSCD
北大核心
2020年第9期8-20,共13页
Journal on Communications
基金
国家自然科学基金资助项目(No.61771098)
四川省科技计划基金资助项目(No.2020YFQ0025)。
关键词
应急物联网
深度强化学习
资源预留
超低时延通信
emergency IoT
deep reinforcement learning
resource reservation
ultra-low latency communication
