周安福

北京邮电大学计算机学院教授，博士生导师

Title: Understanding Operational 5G: A First Measurement Study on Its Coverage, Performance and Energy Consumption

Abstract: 

5G, as a monumental shift in cellular communication technology, holds tremendous potential for spurring innovations across many vertical industries, with its promised multi-Gbps speed, sub-10 ms low latency, and massive connectivity. On the other hand, as 5G has been deployed for only a few months, it is unclear how well and whether 5G can eventually meet its prospects. In this paper, we demystify operational 5G networks through a first-of-its-kind crosslayer measurement study. Our measurement focuses on four major perspectives: (i) Physical layer signal quality, coverage and hand-off performance; (ii) End-to-end throughput and latency; (iii) Quality of experience of 5G’s niche applications (e.g., 4K/5.7K panoramic video telephony); (iv) Energy consumption on smartphones. The results reveal that the 5G link itself can approach Gbps throughput, but legacy TCP leads to surprisingly low capacity utilization (<32%), latency remains too high to support tactile applications and power consumption escalates to 2 − 3× over 4G. Our analysis suggests that the wireline paths, upper-layer protocols, computing and radio hardware architecture need to co-evolve with 5G to form an ecosystem, in order to fully unleash its potential.

报告人简介：

       周安福，北京邮电大学计算机学院教授，博士生导师。研究方向为毫米波感知与传输、物联网系统，代表成果发表发表在SIGCOMM/MobiCom/NSDI/ToN/TMC等一流国际会议或刊物。与OPPO、阿里巴巴等企业深度合作，把科研成果实际应用于产业创新。他获得中国计算机学会CCF-Intel青年学者奖（2016）， ACM中国新星奖（2019），阿里巴巴优秀学术合作奖（2020）。