时 间：2019年12月4日（周三）上午10点15分

地 点：计算机科学与技术学院六楼会议室

题 目：异构无线网络能量效率跨层资源分配技术研究

报告人：徐雷博士：南京理工大学教授、博导

摘 要：In this talk, an uplink cross-layer resource allocation problem based on imperfect channel state information (CSI) is modeled as min-max fractional stochastic programming for heterogeneous wireless access. The resource allocation is subject to constraints in delay, service outage probability, system radio bandwidth, and total power consumption. The joint bandwidth and power allocations are based on CSI at the physical layer and queue state information (QSI) at the link layer. In order to determine the transmission rate of each mobile terminal (MT) according to the queue buffer occupancy, a probability upper bound of exceeding the maximum packet delay in terms of a required transmission rate is presented based on M/D/1 model. Then, the bandwidth and power allocation problem is transformed into bi-convex programming, and an optimal distributed bandwidth and power allocation (ODBPA) algorithm is proposed. To reduce computational complexity, a suboptimal distributed bandwidth and power allocation (SDBPA) algorithm is presented. Simulation results demonstrate that the proposed algorithms improve the energy efficiency greatly.

个人简介：徐雷，男，博士，南京理工大学计算机科学与工程学院，教授，博士生导师，研究方向：网络空间安全、5G、大数据分析。2012年博士毕业于南京航空航天大学。2014-2016年在加拿大滑铁卢大学做访问学者、博士后（合作导师：庄卫华院士）。2017年，破格晋升为南京理工大学计算机科学与工程学院教授。主持国家自然科学基金、国防基础预研项目、海军预研课题等20余项课题。研究的重要成果以第一作者发表在IEEE JSAC、IEEE TIFS、IEEE TWC、IEEE TC、IEEE TVT等期刊。撰写Springer英文专著章节一章，出版《电子工业出版社》教材一本，申请发明专利30余项（16项已授权）。

作者：计算机科学与技术学院   审核：白光伟