本文選題：TD-LTE + 覆蓋��； 參考：《吉林大學》2014年碩士論文

【摘要】：隨著數(shù)據(jù)業(yè)務量的爆炸式增長，網(wǎng)絡利用率不斷攀升，受TD-SCDMA產(chǎn)業(yè)鏈規(guī)模能力、技術特性等的影響，TD-SCDMA在傳輸速率、運營成本、覆蓋成本、用戶體驗、無線帶寬等方面同競爭對手相比，均存在明顯的劣勢。因此，盡快將TD-SCDMA網(wǎng)絡向TD-LTE網(wǎng)絡演進，真正有效地建立起TD系統(tǒng)在未來的寬帶移動市場、移動互聯(lián)網(wǎng)市場、物聯(lián)網(wǎng)市場的競爭力，是中國移動新時期應對競爭、保持技術領先優(yōu)勢的重要舉措。 本文通過對現(xiàn)有GSM網(wǎng)和TD-SCDMA網(wǎng)所能承載業(yè)務的能力、各網(wǎng)已建設基站數(shù)量及覆蓋范圍等情況的調查和分析。根據(jù)TD-LTE的業(yè)務特點，結合目前網(wǎng)絡承載業(yè)務的發(fā)展情況，對業(yè)務進行合理分析及預測。科學預測話務分布，合理布局網(wǎng)絡，均衡話務量，結合四網(wǎng)協(xié)調發(fā)展策略，得出TD-LTE網(wǎng)絡需要建設的重點區(qū)域及預計承載的業(yè)務量。并對TD-LTE網(wǎng)絡架構及幾個關鍵技術進行了深入研究，在此基礎上，結合LTE試驗網(wǎng)的經(jīng)驗數(shù)據(jù)確定TD-LTE網(wǎng)絡的建設原則。主要研究內容如下： 在確定規(guī)劃區(qū)域及覆蓋要求的基礎上，通過對現(xiàn)網(wǎng)數(shù)據(jù)業(yè)務分析找出數(shù)據(jù)業(yè)務熱點區(qū)域，結合覆蓋質量目標來確定TD-LTE網(wǎng)絡建網(wǎng)初期的網(wǎng)絡覆蓋方案。并對現(xiàn)網(wǎng)站址進行系統(tǒng)外干擾排查及分析，發(fā)現(xiàn)高干擾風險基站，提出具體的規(guī)避措施，以確定TD-LTE網(wǎng)絡頻率的使用方案。根據(jù)電波傳播模型來計算TD-LTE基站的覆蓋半徑，最終得出TD-LTE網(wǎng)絡建設方案。根據(jù)網(wǎng)絡擴容、特殊場景及技術演進的需求，確定天線使用方案。 通過網(wǎng)絡規(guī)模估算，確定區(qū)域內需要建設的基站數(shù)目及其基站位置。完成初步的站址規(guī)劃后，將站址規(guī)劃方案輸入到TD-LTE規(guī)劃仿真軟件中進行覆蓋及容量仿真分析，通過仿真分析輸出結果，進一步評估目前建設方案是否可以滿足覆蓋及容量目標，如部分區(qū)域不能滿足要求，則需要對建設方案進行調整修改，使得建設方案最終滿足規(guī)劃目標的要求。最終總結出可行的TD-LTE網(wǎng)絡建設方案。 TD-LTE在網(wǎng)絡建設時還需要考慮TD-SCDMA系統(tǒng)現(xiàn)網(wǎng)實際部署情況，，不僅要借鑒現(xiàn)有系統(tǒng)的規(guī)劃方案，因地制宜規(guī)劃建設TD-LTE網(wǎng)絡，還需要兼顧系統(tǒng)間的共存與運營平衡問題，力求在網(wǎng)絡建設方案上達到優(yōu)良性能與低廉成本的完美結合。 本文的研究工作和成果為TD-LTE網(wǎng)絡建設提供了技術參考，具有理論和實際工程意義。
[Abstract]:With the explosive growth of data traffic, the network utilization rate is increasing, and TD-SCDMA is affected by the TD-SCDMA industry chain scale capability, technical characteristics and so on in the transmission rate, operation cost, coverage cost, user experience, etc. Wireless bandwidth and other aspects compared with competitors, there are obvious disadvantages. Therefore, developing TD-SCDMA network to TD-LTE network as soon as possible and establishing the competitiveness of TD system in the future broadband mobile market, mobile Internet market and Internet of things market is the competition of China Mobile in the new era. An important move to maintain a leading edge in technology. This paper investigates and analyzes the capacity of the existing GSM and TD-SCDMA networks to carry services, the number and coverage of the base stations that have been built in each network. According to the characteristics of TD-LTE service and the development of network bearer service at present, the service is analyzed and forecasted reasonably. Scientific prediction of traffic distribution, rational distribution of network, balanced traffic, combined with the coordinated development strategy of four networks, the key areas to be constructed and the traffic volume expected to be carried by TD-LTE network are obtained. The TD-LTE network architecture and several key technologies are deeply studied. On the basis of this, the construction principle of TD-LTE network is determined by combining the empirical data of LTE experimental network. The main contents of the study are as follows: On the basis of determining the planning area and the coverage requirement, the hot spot area of the data service is found through the analysis of the existing network data services, and the coverage scheme in the initial stage of the TD-LTE network construction is determined by combining the coverage quality target. In order to determine the frequency of TD-LTE network, this paper investigates and analyzes the current site, finds out the base station with high interference risk, and puts forward some concrete measures to avoid it. The coverage radius of TD-LTE base station is calculated according to the radio wave propagation model, and finally the TD-LTE network construction scheme is obtained. According to the requirements of network expansion, special scenarios and technological evolution, the antenna usage scheme is determined. The number of base stations to be built and the location of the base stations in the region are determined by estimating the network size. After the initial site planning is completed, the site planning scheme is input into the TD-LTE planning simulation software for coverage and capacity simulation analysis. Through the simulation analysis of the output results, it further evaluates whether the current construction plan can meet the coverage and capacity objectives. If part of the area can not meet the requirements, it is necessary to adjust and modify the construction plan, so that the construction plan can meet the requirements of the planning objectives. Finally, the feasible scheme of TD-LTE network construction is summarized. TD-LTE also needs to consider the actual deployment of TD-SCDMA system in network construction, not only drawing lessons from the existing system planning scheme, planning and building TD-LTE network according to local conditions, but also taking into account the coexistence and operational balance between systems. In the network construction program to achieve good performance and low-cost perfect combination. The research work and results of this paper provide a technical reference for the construction of TD-LTE network, and have theoretical and practical engineering significance.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN929.5

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本文編號：1938215