首页> 外文期刊>IEEE/ACM Transactions on Networking >An uplink CDMA system architecture with diverse QoS guarantees for heterogeneous traffic
【24h】

An uplink CDMA system architecture with diverse QoS guarantees for heterogeneous traffic

机译:具有用于异构业务的多种QoS保证的上行CDMA系统架构

获取原文
获取原文并翻译 | 示例

摘要

The uplink access control problems for cellular code-division multiple-access (CDMA) systems that service heterogeneous traffic with various types of quality-of-service (QoS) and use multicode CDMA to support variable bit rates are addressed. Considering its distinct QoS requirements, class-I real-time traffic (e.g., voice and video) is differentiated from class-II non-real-time traffic (e.g., data). Connection-oriented transmission is achieved by assigning mobile-oriented code channels for class-I traffic, where each corresponding mobile needs to pass an admission test. Class-II traffic is transmitted in a best-effort manner through a transmission-rate request access scheme which utilizes the bandwidth left unused by class-I traffic. Whenever a mobile has class-II messages to transmit, the mobile requests code channels via a base station-oriented transmission-request code channel, then, according to the base station scheduling, the transmission is scheduled and permitted. Addressed are the admission test for class-I connections, transmission power allocation, and how to maximize the aggregate throughput for class-II traffic. The admission region of voice and video connections and the optimum target signal-to-interference ratio of class-II traffic are derived numerically. The performance of class-II traffic transmissions in terms of average delay is also evaluated and discussed.
机译:解决了蜂窝码分多址(CDMA)系统的上行链路访问控制问题,该系统以各种类型的服务质量(QoS)为异构流量提供服务,并使用多码CDMA支持可变比特率。考虑到其独特的QoS要求,I类实时流量(例如,语音和视频)与II类非实时流量(例如,数据)有所区别。通过为I类业务分配面向移动设备的代码通道来实现面向连接的传输,其中每个相应的移动设备都需要通过入网测试。通过传输速率请求访问方案以尽力而为的方式传输II类业务,该传输速率请求访问方案利用了I类业务未使用的带宽。每当移动站具有要发送的II类消息时,移动站就会通过面向基站的传输请求代码信道来请求代码信道,然后根据基站调度,对传输进行调度和允许。解决的是针对I类连接的准入测试,传输功率分配以及如何最大程度提高II类流量的总吞吐量。数值推导了语音和视频连接的允许区域以及II类流量的最佳目标信干比。还评估和讨论了II类流量传输在平均延迟方面的性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号