单蜂窝多用户系统下行链路中一种基于虚用户的调度算法 |
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引用本文: | 赵建立,;宋荣方. 单蜂窝多用户系统下行链路中一种基于虚用户的调度算法[J]. 南京邮电学院学报(自然科学版), 2009, 0(4): 35-40 |
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作者姓名: | 赵建立, 宋荣方 |
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作者单位: | [1]南京邮电大学通信与信息工程学院,江苏南京210003; [2]东南大学移动通信国家重点实验室,江苏南京210096 |
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基金项目: | 国家自然科学基金(60572130)、国家重点基础研究发展计划(973计划)(2007CB310607)、东南大学移动通信国家重点实验室开放课题基金、江苏省青蓝工程基金、江苏省高校自然科学基础研究计划重大项目(08KJD50001)和教育部博士点基金(20080293004)资助项目 |
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摘 要: | ![]() 提出一种应用于机会波束成形系统的基于虚用户的调度方案。在单蜂窝多用户系统下行链路中,将用户的服务质量按其所拥有的应用连接数量划分为若干级别,其中高级用户以多个普通用户的身份参与调度。将该调度方案与传统的PFS算法相结合,提出VU—PFS算法。数值分析表明,新算法在保证系统吞吐量和普通用户间公平性的同时,也为高级用户提供了一定的QoS保障。
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关 键 词: | 机会波束成形 虚用户 机会调度 服务质量 |
A Virtual User Based on Scheduling Algorithm for Single Cell Multi-user Downlink |
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Affiliation: | ZHAO Jian-li, SONG Rong-fang(1. College of Telecommunications & Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; 2. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China) |
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Abstract: | ![]() This paper presents a novel virtual user based scheme and applies it to opportunistic beamforming systems. In a single cell multi-user downlink scenario, users are categorized to several levels according to the number of their application connections, and a high-level user is regarded as several ordinary users to participate in scheduling. This paper combines the virtual user based scheme with the conventional PFS algorithm, and proposes a new VU-PFS algorithm. Numerical results show that the VU-PFS algorithm can guarantee system throughput and fairness of ordinary users while meeting high-level user' s QoS. |
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Keywords: | opportunistic beamforming virtual user opportunistic scheduling QoS |
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