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HSDPA是TD-SCDMA的重要功能之一,本文在对HSDPA、AMC、HARQ等关键技术进行分析的基础上,研究了TD-SCDMA HSDPA覆盖、容量、时隙和载波配置等关键无线规划问题,提出了相应的解决方案. 相似文献
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对无线网络规划中TD-SCDMA系统所独有的时隙规划进行了详细阐述,其中涉及交叉时隙干扰分析、时隙规划策略及特点分析等相关问题,对于未来的TD-SCDMA无线网络规划工程实践具有借鉴意义。 相似文献
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TD-SCDMA发展至今,正在往主流市场上走。一个高性价比的TD-SCDMA的网络对于运营商来说无疑是一个福音。文章概述了第三代移动通信系统TD-SCDMA的网络特点,然后对TD-SCDMA无线网络规划的各个环节进行介绍,并根据容量和覆盖,给出无线网络规划方案。 相似文献
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杨健 《电信工程技术与标准化》2010,23(9)
本文分析了密集市区TD-SCDMA系统的传播环境及话务特点,从目前密集市区TD-SCDMA网络存在的问题入手,在规划的角度对密集市区覆盖和容量需求进行了分析,给出了规划建议。 相似文献
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本文着眼于TD-SCDMA和WCDMA无线接入网络规划的比较,现实意义是在WCDMA网络规划的基础上,考虑TD-SCDMA网络规划的时候,如何对原有的规划结果进行调整.其中的关键是站点数量的问题,在现有的技术水平下,覆盖相同的面积时所需要的TD-SCDMA基站比需要的WCDMA基站多,同时本文指出,上行链路是限制TD-SCDMA小区覆盖范围的主要因素.其次还有TD-SCDMA的频率和码规划问题,这些都是需要在做TD-SCDMA网络规划时重新考虑的问题.另外本文指出,克服TD-SCDMA规划中的交叉时隙干扰的方法,包括增加存在交叉时隙干扰的相邻基站间的隔离度,和相邻基站使用不同的频点两种方法. 相似文献
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本文结合相关研究和试验成果,在深入分析TD-SCDMA技术特点的基础上,总结了TD-SCDMA系统内干扰的5个特点,提出了TD-SCDMA组网容量与覆盖规划中应当注意的若干问题和TD-SCDMA R4与HSDPA、MBMS系统混合组网中互干扰协调方法.本文认为做好TD-SCDMA无线资源综合管理与调度是抑制系统内同频干扰、提高网络性能和用户感受的主要手段,并给出了若干干扰抑制解决思路. 相似文献
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TD-LTE系统中影响容量因素的研究 总被引:1,自引:0,他引:1
TD-LTE采用了OFDM、MIMO和AMC等先进技术,因此在容量规划方面表现得更加复杂。为更快地推动TD-LTE的技术研究与商用进程,当前亟需对TD-LTE容量规划技术进行研究。根据TD-LTE系统组网的工程实践,介绍了TD-LTE的容量特性和容量规划的基本原则,分析了影响TD-LTE容量特性的因素,包括资源分配、MIMO技术、同频组网和异频组网对容量的影响,提出了吞吐量计算以及容量分析的方法。研究结果为TD-LTE系统组网提供了参考依据。 相似文献
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The area of capacity planning is receiving increased emphasis in the management of operations due to the financial benefits of efficiently utilizing capacity and to the importance of accurate capacity plans for use with material requirements planning (MRP) and other information-oriented planning systems. Most of the prior research in capacity planning has been limited to improving capacity management techniques that assume a constant level of productivity. But it has been shown in past empirical research that many firms exhibit productivity improvements, or learning, as more units are produced. These productivity improvements are usually associated with a learning process-human, technological, or organizational-and have been measured by logarithmic functions known as learning curves. When companies exhibit this learning process in the use of their capital or human resources, the capacity planning methodology used should consider the effects of future productivity improvements on capacity utilization. This paper presents an overview learning curve analysis (LCA) for rough-cut capacity planning and illustrates the effective use of learning curves for capacity planning through a comparison of traditional approaches with ones that incorporate the learning curve concept 相似文献
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We perform four experiments to evaluate several features of capacity planning approaches used in practice and make concrete suggestions for practitioners. We use an optimal capacity planning technique (FIFEX) with industrial demand and capacity data for realistic conclusions. The first experiment studies the cost effects of allowing for capacity expansion only at special times such as at the beginning of each month or each quarter. We find that these effects are not great if there is at least one capacity expansion opportunity about every six months. The second experiment determines the cost implications of capacity planning heuristics. We demonstrate that FIFEX delivers solutions which cost 5-10% less than heuristic solutions. The third experiment examines the sensitivity of costs against the frequency of forecasting and planning. Our experiments indicate that costs can be decreased by 2%-7% by doubling forecasting and planning frequency. We suggest that practitioners forecast and plan at least once every quarter. The final experiment compares joint optimization of tool and floor-shell expansions with sequential optimization. 3%-9% of costs can be saved by using the joint optimization technique FIFEX instead of sequential optimization. We note that although cost savings are relatively small in percentages, they correspond to tens of million dollars. 相似文献
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WCDMA无线系统的规划和优化 总被引:1,自引:0,他引:1
本文介绍了WCDMA的空中接口,提出了系统规划的方案,包括覆盖、容量、频率和码子的规划,同时讨论了WCDMA网络性能中关键的优化和监测指标. 相似文献
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WCDMA无线网混合业务容量规划方法 总被引:1,自引:0,他引:1
未来WCDMA无线网上承载的是包括电路交换城(CS)和分组交换域(PS)的混合业务,因此WCDMA无线网规划的质量高低与混合业务测算的方法直接相关。介绍了WCDMA无线网容量计算的有关流程和相关方法,并举例介绍了一种简单的容量规划方法。 相似文献
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本文在无线数据业务需求爆发增长的背景下,基于业务发展趋势提出适用于无线网络容量规划的神经网络预测模型,创新采用数据增量与循环迭代预测方法,提升业务预测精度,并将预测结论应用于无线网络容量规划中,指导网络资源合理配置. 相似文献
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