【正文】 ork expansion, upgrade, the operator is always concerned with optimization is pleted, the new capacity can achieve the simulation predicted value.2 network management systemNetwork management system is to monitor network performance, the system data acquisition. It can be shown that the distribution business, the business such as the quality of call loss rate statistics, therefore, can help the maintenance engineer for fault location.QoS indexes are relatively flexible, according to KPI requirements or cost control requirements, can be identified in the corresponding QoS index. The constraints include: hardware resources ( channel capacity configuration ), software resources ( interference caps ), call loss rate, dropped call rate, call rate, handover success rate, the uplink / downlink channel load, data retransmission / delay, data and circuit type business rate etc.. To meet these requirements, network management system should have the following 3 functions:( 1) monitoring network traffic and performance。Real time load analysis and control。3G network optimization摘自TDSCDMA無(wú)線網(wǎng)絡(luò)優(yōu)化原理及方法One, the basic process of 3G network optimizationOperators aim is to build a profitable network, they are very concerned about the network construction, expansion and upgrade in the process of investment cost and its final performance, but the expansion, upgrade costs and network performance is a pair of contradiction. Construction cost budget and control can get relatively accurate numerical, but the performance of the network is posed of many subjective and objective factors. On one hand, the network capacity expansion, upgrading and upgrades to existing users can guarantee the normal use, on the other hand, it also can provide petitive new business, and makes further expansion, upgrading and upgrades can be carried out smoothly. In this way, the network optimization bees a longterm, iterative process.Network optimization should be able to according to the operator39。. . . . .畢 業(yè) 設(shè) 計(jì)（論 文）外 文 參 考 資 料 及 譯 文譯文題目： TDSCDMA與WCMA網(wǎng)絡(luò)優(yōu)化分析 　　　　　 3G network optimization 學(xué)生姓名： 學(xué)　　號(hào)： ?！　I(yè)： 通信工程 所在學(xué)院： 龍?bào)磳W(xué)院 指導(dǎo)教師： 職　　稱： 講師 2011年 12 月 1 日說(shuō)明：要求學(xué)生結(jié)合畢業(yè)設(shè)計(jì)（論文）課題參閱一篇以上的外文資料，并翻譯至少一萬(wàn)印刷符（或譯出3千漢字）以上的譯文。譯文原則上要求打?。ㄈ缡謱?xiě)，一律用400字方格稿紙書(shū)寫(xiě)），連同學(xué)校提供的統(tǒng)一封面及英文原文裝訂，于畢業(yè)設(shè)計(jì)（論文）工作開(kāi)始后2周內(nèi)完成，作為成績(jī)考核的一部分。s specific needs by means of software tool automatically, can also through manual intervention to achieve the capacity, coverage, QoS ensure a balance point. 3G network system structure is shown in figure 1. Generally, network and includes 3 levels:On Node B, the mobile station performance indicators for realtime calculation and simulation, including fast power control, rapid congestion resolved, wireless link adaptive, channel allocation。Based on experience or statistical results, through roadshow, network optimization software for network performance prediction.In front of 2 levels, in the network is pleted, by the network management system through the online monitoring and statistics in real time automatic adjustment, while the third level is the need for professionals to carry out, also is we often say that the network optimization.Artificial network optimization can be divided into the following several steps:First of all, the operator should be based on their own characteristics the definition of a good network optimization is pleted to achieve the goal, which determine the above mentioned balance point, including pointtopoint quality objectives, different business types of performance indicators and related KPI ( key performance indicators) of various values。( 2) realtime fault detection and rapid positioning, in order to improve the quality of service。 as long as it can provide enough link quality, any area is the channel to call. DCA has a high utilization rate of the frequency band, without channel planning, can automatically adapt to the network load and interference changes etc.. The drawback is that, DCA algorithm is pared to FCA ( fixed channel allocation ) is more plex, the system overhead is relatively large.The DCA algorithm is divided into slow and fast