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Radio resource management in cellular CDMA systems supporting heterogeneous services.

机译:支持异构服务的蜂窝CDMA系统中的无线电资源管理。

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摘要

A novel radio resource management (RRM) scheme, which jointly considers the system characteristics from the physical, link and network layers, is proposed for cellular code division multiple access (CDMA) systems. Specifically, the power distribution at the physical layer distributes only the necessary amount of power to each connection in order to achieve its required signal-to-interference-plus-noise ratio (SINR). The rate allocation guarantees the required delay/jitter for real-time traffic and the minimum transmission rate requirement for non-real-time traffic. Efficient rate allocation is achieved by making use of the randomness and burstiness of the packet generation process. At the link layer, a packet scheduling scheme is developed based on the information of power distribution and rate allocation from the physical layer to achieve guaranteed quality of service (QoS). It schedules the system resource on a time slot basis to efficiently utilize the system resource in every time slot and to improve the packet throughput for non-real-time traffic. A connection admission control (CAC) scheme based on the lower layer resource allocation information is proposed at the network layer. The CAC scheme also makes use of user mobility information to reduce handoff connection dropping probability (HCDP). Theoretical analysis of the grade of service (GOS) performance, in terms of new connection blocking probability (NCBP), HCDP, and resource utilization, is given. Numerical results show that the proposed RRM scheme can achieve both effective QoS guarantee and efficient resource utilization.
机译:针对蜂窝码分多址(CDMA)系统,提出了一种新的无线资源管理(RRM)方案,该方案从物理,链路和网络层共同考虑了系统特性。具体而言,物理层的功率分配仅将必要的功率分配给每个连接,以实现其所需的信号干扰加噪声比(SINR)。速率分配保证了实时流量所需的延迟/抖动和非实时流量的最低传输速率要求。通过利用分组生成过程的随机性和突发性来实现有效的速率分配。在链路层,基于来自物理层的功率分配和速率分配的信息,开发了一种分组调度方案,以实现有保证的服务质量(QoS)。它按时隙调度系统资源,以有效利用每个时隙中的系统资源,并提高非实时流量的数据包吞吐量。在网络层提出了一种基于下层资源分配信息的连接准入控制(CAC)方案。 CAC方案还利用用户移动性信息来减少切换连接丢弃概率(HCDP)。从新连接阻塞概率(NCBP),HCDP和资源利用率的角度,对服务等级(GOS)性能进行了理论分析。数值结果表明,所提出的RRM方案既可以实现有效的QoS保证,又可以有效地利用资源。

著录项

  • 作者

    Zhao, Dongmei.;

  • 作者单位

    University of Waterloo (Canada).;

  • 授予单位 University of Waterloo (Canada).;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 156 p.
  • 总页数 156
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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