With the rapid development of cloud computing,edge computing,and smart devices,computing power resources indicate a trend of ubiquitous deployment.The traditional network architecture cannot efficiently leverage these...With the rapid development of cloud computing,edge computing,and smart devices,computing power resources indicate a trend of ubiquitous deployment.The traditional network architecture cannot efficiently leverage these distributed computing power resources due to computing power island effect.To overcome these problems and improve network efficiency,a new network computing paradigm is proposed,i.e.,Computing Power Network(CPN).Computing power network can connect ubiquitous and heterogenous computing power resources through networking to realize computing power scheduling flexibly.In this survey,we make an exhaustive review on the state-of-the-art research efforts on computing power network.We first give an overview of computing power network,including definition,architecture,and advantages.Next,a comprehensive elaboration of issues on computing power modeling,information awareness and announcement,resource allocation,network forwarding,computing power transaction platform and resource orchestration platform is presented.The computing power network testbed is built and evaluated.The applications and use cases in computing power network are discussed.Then,the key enabling technologies for computing power network are introduced.Finally,open challenges and future research directions are presented as well.展开更多
空天地一体化网络是6G通信愿景的重要组成部分,该网络借助广域覆盖优势,通过对网络中异构多级资源进行统一管理和综合处理,实现通信服务的全球无缝覆盖。但空天地一体化网络结构复杂且空时大尺度变化,异构网络节点时空跨度大,易引发高...空天地一体化网络是6G通信愿景的重要组成部分,该网络借助广域覆盖优势,通过对网络中异构多级资源进行统一管理和综合处理,实现通信服务的全球无缝覆盖。但空天地一体化网络结构复杂且空时大尺度变化,异构网络节点时空跨度大,易引发高时延、动态路由等问题,难以保障不同业务的服务等级。同时,网络拓扑具有高度动态性,因而无法保障适配资源的服务连续性。端到端网络切片和服务功能链技术(Service Function Chain,SFC)作为一种有效方案,能够为不同类型的业务提供定制化服务,具有提升网络性能的潜力。针对上述问题,研究基于网络切片和SFC的天地一体化网络架构;构建多源业务模型,并根据业务种类划分不同的资源切片;提出一种基于可靠性感知的服务功能链映射方法,通过计算部署路径可靠度选择SFC映射路径。仿真结果表明,基于可靠性感知的SFC映射算法相比较传统的SFC映射方案,链路资源利用率高出41.9%,节点资源利用率高出28.4%,服务接受率提高19.7%。展开更多
基金supported by the National Science Foundation of China under Grant 62271062 and 62071063by the Zhijiang Laboratory Open Project Fund 2020LCOAB01。
文摘With the rapid development of cloud computing,edge computing,and smart devices,computing power resources indicate a trend of ubiquitous deployment.The traditional network architecture cannot efficiently leverage these distributed computing power resources due to computing power island effect.To overcome these problems and improve network efficiency,a new network computing paradigm is proposed,i.e.,Computing Power Network(CPN).Computing power network can connect ubiquitous and heterogenous computing power resources through networking to realize computing power scheduling flexibly.In this survey,we make an exhaustive review on the state-of-the-art research efforts on computing power network.We first give an overview of computing power network,including definition,architecture,and advantages.Next,a comprehensive elaboration of issues on computing power modeling,information awareness and announcement,resource allocation,network forwarding,computing power transaction platform and resource orchestration platform is presented.The computing power network testbed is built and evaluated.The applications and use cases in computing power network are discussed.Then,the key enabling technologies for computing power network are introduced.Finally,open challenges and future research directions are presented as well.
文摘空天地一体化网络是6G通信愿景的重要组成部分,该网络借助广域覆盖优势,通过对网络中异构多级资源进行统一管理和综合处理,实现通信服务的全球无缝覆盖。但空天地一体化网络结构复杂且空时大尺度变化,异构网络节点时空跨度大,易引发高时延、动态路由等问题,难以保障不同业务的服务等级。同时,网络拓扑具有高度动态性,因而无法保障适配资源的服务连续性。端到端网络切片和服务功能链技术(Service Function Chain,SFC)作为一种有效方案,能够为不同类型的业务提供定制化服务,具有提升网络性能的潜力。针对上述问题,研究基于网络切片和SFC的天地一体化网络架构;构建多源业务模型,并根据业务种类划分不同的资源切片;提出一种基于可靠性感知的服务功能链映射方法,通过计算部署路径可靠度选择SFC映射路径。仿真结果表明,基于可靠性感知的SFC映射算法相比较传统的SFC映射方案,链路资源利用率高出41.9%,节点资源利用率高出28.4%,服务接受率提高19.7%。
