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[ "陈巍,男,博士,清华大学电子工程系教授、博士生导师(工学、工程)、副系主任、教学委员会主任、清华大学“电子与通信工程”学位评定分委员会副主席,中国通信学会青年工作委员会副主任委员,中国电子学会教育工作委员会青年工作组副主任委员,北京市通信学会青年工作委员会委员,IEEE Transactions on Education、IEEE Wire1ess Communication Letters、China Communications等国际期刊编委,“全国五一劳动奖章”、“北京市优秀青年人才”、“北京市优秀教师”荣誉称号获得者,国家重点基础研究发展计划(“973”计划)首席科学家,国家自然科学基金优秀青年科学基金、第十四届霍英东高校青年教师奖一等奖、第十七届茅以升北京青年科技奖获得者,IEEE高级会员,国家中青年科技创新领军人才计划、教育部新世纪优秀人才支持计划、北京市科技新星计划和清华大学“221”人才计划入选者。主要研究方向为无线通信、信息论、移动互联网。" ]
网络出版日期:2015-05,
纸质出版日期:2015-05-20
移动端阅览
陈巍. 虚拟实时服务:构架、算法及演进路径[J]. 电信科学, 2015,31(5):71-81.
Wei Chen. Virtural Realtime Services:Infrastructure,Algorithms and Evolution Path[J]. Telecommunication science, 2015, 31(5): 71-81.
陈巍. 虚拟实时服务:构架、算法及演进路径[J]. 电信科学, 2015,31(5):71-81. DOI: 10.11959/j.issn.1000-0801.2015129.
Wei Chen. Virtural Realtime Services:Infrastructure,Algorithms and Evolution Path[J]. Telecommunication science, 2015, 31(5): 71-81. DOI: 10.11959/j.issn.1000-0801.2015129.
提出了一种基于虚拟实时服务的协议构架,可有效发掘用户提出通信请求之前的“负时间轴”上的空闲时频资源或可再生能源,将用户可能感兴趣的内容以多播的方式预先推送到终端的存储器中,从而以非实时的通信提供虚拟实时服务,在确保服务质量的前提下大幅度提升频谱和能量效率。对终端缓存内容的选择算法进行了标准化,从而允许基站在本地预测用户已缓存的内容,并判断当前是否应发起推送和推送哪条内容;提出了虚拟实时服务涉及的若干关键算法,也给出了虚拟实时服务的演进途径及主要开放问题,旨在为相关新兴产业的技术发展提供参考。
A virtual rea1-time service infrastructure for future wireless access,which is capable of efficiently using the idle timeslots or renewable energy distributed in the“negative time-axis”before users’ transmission requests was proposed. By using these idle timeslots,the information content in which users might be interested can be pushed to the end devices’ buffers in a multicasting manner before a user requests the content. The end devices’ algorithm which determines which content should be buffered was standardized. Hence,the base-station may locally predict what have been buffered in the users’ devices,and determine whether it should push and which content to transmit. Meanwhile,a number of key algorithms for virtual rea1-time service were proposed and analyzed,an evolution path toward virtual rea1-time service along with its major problems was also presented. Chen’s program was proposed to guide the development of the virtual rea1-time service related emerging industry and technologies.
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