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arXiv 1907.09211cs.NIcs.MM
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一种覆盖感知的网络切片资源配置方法

A Coverage-Aware Resource Provisioning Method for Network Slicing

Quang-Trung Luu, Sylvaine Kerboeuf, Alexandre Mouradian, Michel Kieffer

摘要:

通过5G网络中的网络切片,移动网络运营商可以为服务提供商(SP)创建各种切片,以适应定制服务。通常,属于切片的各种服务功能链(SFC)是基于尽力而为来部署的。没有什么能确保基础设施提供商(InP)能够分配足够的资源来应对某些SP不断增长的需求。此外,在许多情况下,切片必须部署在某些地理区域上:然后必须考虑覆盖范围以及最低每用户速率约束。本文以InP的角度来看,并提出了一个切片资源配置方法,以应付多个切片的需求,在计算,存储,覆盖范围和速率的限制。切片内的各种SFC的资源需求被聚集在切片资源需求(SRD)的图内。然后,必须提供基础设施节点和链路,以满足所有SRD。这个问题导致了一个混合线性规划公式。考虑了两步方法,具有几个变体,这取决于要供应的每个切片的约束是顺序考虑还是联合考虑。一旦已经执行了供应,就可以在其上已经供应了资源的减小大小的基础设施图上考虑任何切片部署策略。仿真结果表明,所提出的方法相比,一个更经典的直接切片嵌入方法的有效性。

英文摘要:

With network slicing in 5G networks, Mobile Network Operators can create various slices for Service Providers (SPs) to accommodate customized services. Usually, the various Service Function Chains (SFCs) belonging to a slice are deployed on a best-effort basis. Nothing ensures that the Infrastructure Provider (InP) will be able to allocate enough resources to cope with the increasing demands of some SP. Moreover, in many situations, slices have to be deployed over some geographical area: coverage as well as minimum per-user rate constraints have then to be taken into account. This paper takes the InP perspective and proposes a slice resource provisioning approach to cope with multiple slice demands in terms of computing, storage, coverage, and rate constraints. The resource requirements of the various SFCs within a slice are aggregated within a graph of Slice Resource Demands (SRD). Infrastructure nodes and links have then to be provisioned so as to satisfy all SRDs. This problem leads to a Mixed Integer Linear Programming formulation. A two-step approach is considered, with several variants, depending on whether the constraints of each slice to be provisioned are taken into account sequentially or jointly. Once provisioning has been performed, any slice deployment strategy may be considered on the reduced-size infrastructure graph on which resources have been provisioned. Simulation results demonstrate the effectiveness of the proposed approach compared to a more classical direct slice embedding approach.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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