由信息与通信工程学院主办的“信通论坛”本次邀请到陈伟坤助理教授进行学术交流，具体安排如下，欢迎感兴趣的师生参加。

一、主　题：Optimal Network Slicing for Service-Oriented Networks with Flexible Routing and Guaranteed E2E Latency

二、主讲人：北京理工大学 陈伟坤助理教授

三、时　间：2023年5月11日（周四）14:00

四、地　点：宾诺咖啡

五、主持人：林静然 教授

六、主讲内容：

Network function virtualization is a promising technology to simultaneously support multiple services with diverse characteristics and requirements in the 5G and beyond networks. In particular, each service consists of a predetermined sequence of functions, called service function chain (SFC), running on a cloud environment. To make different service slices work properly in harmony, it is crucial to appropriately select the cloud nodes to deploy the functions in the SFC and flexibly route the flow of the services such that these functions are processed in the order defined in the corresponding SFC, the end-to-end (E2E) latency constraints of all services are guaranteed, and all cloud and communication resource budget constraints are respected. In this talk, we first propose a new mixed binary linear program (MBLP) formulation of the above network slicing problem that optimizes the system energy efficiency while jointly considers the E2E latency requirement, resource budget, flow routing, and functional instantiation. Then we design an efficient two-stage LP rounding-and-refinement algorithm for solving this formulation. In the end, we present numerical results to demonstrate the effectiveness and efficiency of the proposed formulation and algorithm.

七、主讲人简介：

陈伟坤，北京理工大学数学与统计学院助理教授，硕士生导师。2019年在中国科学院数学与系统科学研究院获得博士学位。主要研究兴趣是整数规划理论、算法与软件及其在无线通信与社交网络等领域中的应用。现为北京运筹学会理事，在SIAM Journal on Optimization，Journal of Global Optimization，ACM Transactions on Mathematical Software, IEEE JSAC, TSP, TNSM等杂志发表数篇学术论文。2018年获得中国运筹学会“科学技术奖运筹应用奖”，2020年获得中国科学院“中国科学院优秀博士学位论文”。