Radio resource management strategy for VoIP service in TD-HSDPA system

来源 :The Journal of China Universities of Posts and Telecommunica | 被引量 : 0次 | 上传用户:onlysimon
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In this article,the performance of a novel radio resource management (RRM) strategy for voice over IP (VoIP) service will be evaluated in low code rate (LCR) time duplex high speed downlink packet access (TD-HSDPA) system. This novel RRM strategy is studied from the aspects of scheduling algorithm and time slot assignment algorithm. As VoIP is delay sensitive service,the delay based proportional fair (DBPF) scheduler is proposed in this article. Smart antenna (SA),which is adopted in LCR TD-HSDPA,can obtain spatial information from the direction of arrival (DOA) estimation. To exploit this spatial information further,a dynamic time slot allocation (DTA) algorithm is introduced to cooperate with the DBPF scheduler. The performance of the round robin (RR),proportional fair (PF) with the random time slot allocation (RTA) algorithm will be given to demonstrate the benefits of this novel DBPF with DTA RRM strategy. The system level simulation results prove that the performance of this novel RRM strategy is the best of all the RRM strategies. In this article, the performance of a novel radio resource management (RRM) strategy for voice over IP (VoIP) service will be evaluated in low code rate (LCR) time duplex high speed downlink packet access (TD-HSDPA) system. RRM strategy is studied from the aspects of scheduling algorithm and time slot assignment algorithm. As VoIP is delay sensitive service, the delay based proportional fair (DBPF) scheduler is proposed in this article. Smart antenna (SA), which is adopted in LCR TD -HSDPA, obtainable spatial information from the direction of arrival (DOA) estimation. To exploit this spatial information further, a dynamic time slot allocation (DTA) algorithm is introduced to cooperate with the DBPF scheduler. The performance of the round robin (RR proportional fair (PF) with the random time slot allocation (RTA) algorithm will be given to demonstrate the benefits of this novel DBPF with DTA RRM strategy. The system level simulation results prove that the performance of this novel RRM strategy is the best of all the RRM strategies.
其他文献
当前,高职教育课程教学改革正在展开,数学教学也面临着新的挑战。按照以“就业为导向,以服务为宗旨”的职业教育目标,传统的教学方法已无法适应时代的新要求,思维教育成为当
农村信用社由于历史及体制上的原因,资本积累较少,无法从现有自有资金中列支、购置经营上必须的固定资产和安全防卫设施。国家为了扶持农村信用社的发展,先后出台了一系列优惠政
XPS was used to analyse the GaAs(100) substrate before and after concentrated HO treatment. The untreated RTO GaAs(100) surface has a 0.17nm thick oxide overla
指出网络环境下,各种数字信息源的可获取途径越来越多,科研人员对数字信息源有所偏爱且利用率颇高,数字信息源的检索日显重要。对气象专业数字信息源类型、信息检索工具等进
从漠视到围观是一种苏醒,从围观到行动是一种担当,如今,人们开始尝试着以一个公民的身份去关注、思考、行动。青岛公民参与城市种树的行动,看似微小,但历史和现实告诉我们,这苏醒和担当宝贵无比、意义深远。  在如今这个地球已成“村”的年代,在这个无法隐身世外、弃世独立的年代,对公共事务的关注与深入探究不仅仅是出于自然属性的好奇,它更是现代社会里摆在“公民”面前无法逃避的现实。是选择发声还是选择沉默?是选择
过去,技师基本属于自然形成、岗位成才,即在长期的生产与工作实践中,逐渐积累经验,增长能力,达到一定水平,被社会认同为技师。随着我国技师学院的建立和发展,开辟了一条由学
2003年2月18日,在新进中央委员会的委员、候补委员学习“三个代表”重要思想和贯彻十六大精神研讨班结业式的讲话中,胡锦涛总书记指出:“三个代表’重要思想是以发展这一主题
水果在我们生活中可谓健康之源。但是对于老年朋友只有吃好 ,吃得巧才能吃出健康来。因老年人的身体各器官的功能比较弱 ,所以一定要选择对身体刺激较小的水果 ,而且每次吃的
在繁华的城市里,各种车辆南来北往,川流不息,然而车辆虽多,却能秩序井然,这中间除了交通警察外,就全靠交通信号灯来发挥作用了。世界上最先使用交通信号灯的是英国伦敦。186
记者:您好,非常感谢您接受我们的采访。党的十七大以来,我国的民族工作取得了突飞猛进的发展。在少数民族干部的培养选拔工作方面,您觉得有哪些亮点最为突出?人事司负责人:党