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TD-LTE室內(nèi)分布系統(tǒng)的研究

發(fā)布時間:2018-11-15 09:31
【摘要】:LTE是一個純數(shù)據(jù)網(wǎng)絡(luò),實現(xiàn)了語音、數(shù)據(jù)的包交換傳輸。LTE網(wǎng)絡(luò)具有網(wǎng)絡(luò)帶寬的動態(tài)配置功能,帶寬大小可以為1.4MHz、3MHz、5MHz、10MHz、15MHz和20MHz,并且LTE具有單次傳輸?shù)膭討B(tài)資源分配能力,,能按照用戶業(yè)務(wù)需求和網(wǎng)絡(luò)的資源占用情況進行資源的合理分配,更好地滿足用戶的語音、數(shù)據(jù)、多媒體等多樣化業(yè)務(wù)的需求。 現(xiàn)階段,物聯(lián)網(wǎng)、互聯(lián)網(wǎng)技術(shù)蓬勃發(fā)展,交互類業(yè)務(wù)、多媒體類業(yè)務(wù)應(yīng)用更趨廣泛,智能終端無論在處理速度還是用戶感官上均實現(xiàn)了質(zhì)的飛越,加上LTE具有的高帶寬、高頻譜資源利用率、高速率等優(yōu)點,共同驅(qū)動了用戶對移動寬帶的渴望,傳統(tǒng)的語音業(yè)務(wù)不再滿足用戶的通信需求,用戶更親睞于形式多樣、方便快捷、操作簡易的數(shù)據(jù)業(yè)務(wù)。據(jù)咨詢機構(gòu)預(yù)測,2016年全球通過移動網(wǎng)絡(luò)使用的數(shù)據(jù)業(yè)務(wù)相較于2013年將增長15倍,數(shù)據(jù)業(yè)務(wù)的比重將遠(yuǎn)遠(yuǎn)超過語音業(yè)務(wù)的占有量,占到業(yè)務(wù)總量的70%。而移動通信中,超過80%的業(yè)務(wù)量將發(fā)生在室內(nèi)。 目前,我國三家運營商基本實現(xiàn)了室外的廣域覆蓋,進行網(wǎng)絡(luò)深度覆蓋,提高室內(nèi)網(wǎng)絡(luò)覆蓋質(zhì)量,成為提高運營商市場競爭能力、提升企業(yè)效益、鞏固市場占有率并實現(xiàn)自身可持續(xù)發(fā)展的根本前提。但目前運營商室內(nèi)分布系統(tǒng)建設(shè)時存在以下問題: (1)現(xiàn)網(wǎng)室內(nèi)分布系統(tǒng)的測試合格率較低,部分站點存在信源脫網(wǎng)、分布系統(tǒng)故障等問題; (2)A類建筑的覆蓋率偏低,其中A類非住宅區(qū)域的覆蓋率為86.86%,A類住宅區(qū)域的覆蓋率為63.78%; (3)2G、3G、4G、WLAN四網(wǎng)共存,各網(wǎng)各建一套室內(nèi)分布系統(tǒng)將增加建設(shè)成本,浪費建造資源; (4)多網(wǎng)共存條件下,缺乏可操作性強的LTE室內(nèi)分布系統(tǒng)建設(shè)方案,限制了多網(wǎng)下網(wǎng)絡(luò)規(guī)劃的可操作性。 本文在多網(wǎng)協(xié)同的基礎(chǔ)上,分析2G、3G室內(nèi)分布系統(tǒng)建設(shè)方法與建設(shè)實例,對TD-LTE系統(tǒng)的室內(nèi)分布系統(tǒng)設(shè)計進行了系統(tǒng)的研究。首先,針對XX地市本文總結(jié)了3G室內(nèi)分布系統(tǒng)的覆蓋比例、話務(wù)量吸收比例以及室分建設(shè)網(wǎng)絡(luò)類型,并分析了現(xiàn)階段室內(nèi)分布系統(tǒng)的業(yè)務(wù)需求、存在的問題、建設(shè)必要性和建設(shè)重點。其次,本文對室內(nèi)分布系統(tǒng)無線鏈路預(yù)算、傳播損耗模型和室內(nèi)分布規(guī)劃方法進行了研究。并在此基礎(chǔ)上,對XX地市皇家花園酒店室內(nèi)分布系統(tǒng)進行實際設(shè)計,設(shè)計內(nèi)容包括信源設(shè)計、系統(tǒng)設(shè)計、天饋系統(tǒng)設(shè)計和系統(tǒng)設(shè)備布局等,詳細(xì)研究了各步驟的設(shè)計內(nèi)容和重點關(guān)注指標(biāo)。最后,本文測試了皇家花園酒店室內(nèi)分布系統(tǒng)的覆蓋質(zhì)量、FTP上行\(zhòng)下行速率、業(yè)務(wù)連接成功率、室內(nèi)信號外泄情況等技術(shù)指標(biāo),驗證了所提方案的可行性。
[Abstract]:LTE is a pure data network, which realizes packet switching transmission of voice and data. LTE network has the function of dynamic configuration of network bandwidth, and the bandwidth can be as large as 1.4 MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz, respectively. Moreover, LTE has the ability of dynamic resource allocation for single transmission, which can allocate resources reasonably according to the user's needs and the resource occupation of the network, so as to better meet the needs of various services such as voice, data, multimedia and so on. At present, the Internet of things, Internet of things technology is booming, interactive services, multimedia services are more widely used, intelligent terminals both in processing speed and user senses to achieve a qualitative leap, plus the LTE has a high bandwidth, The advantages of high spectrum resource efficiency and high speed together drive the desire of users for mobile broadband. The traditional voice services no longer meet the communication needs of users. The users prefer the data services which are diversified convenient and easy to operate. Global data traffic over mobile networks will grow 15 times in 2016 compared with 2013, and the proportion of data services will far outweigh voice services, accounting for 70 percent of the total, according to the consultancy. In mobile communication, more than 80% of the traffic will occur indoors. At present, our country's three operators have basically realized the outdoor wide area coverage, carried on the network deep coverage, improved the indoor network coverage quality, has become the enhancement operator market competition ability, enhances the enterprise benefit, Consolidate market share and realize its own fundamental premise of sustainable development. However, there are the following problems in the construction of indoor distribution system: (1) the qualified rate of indoor distribution system is low, and some stations have some problems such as the information source, the fault of distribution system and so on; (2) the coverage of A-type buildings is low, and the coverage of A-type non-residential areas is 86.86 and the coverage of A-type residential areas is 63.78; (3) 2G / 3GN / 4GN WLAN co-exist, each network will build a set of indoor distribution system which will increase the cost of construction and waste construction resources; (4) under the condition of coexistence of multiple networks, there is a lack of operable LTE indoor distribution system construction scheme, which limits the maneuverability of multi-network planning. On the basis of multi-network cooperation, this paper analyzes the construction methods and examples of 3G indoor distribution system of 2GN, and makes a systematic study on the design of indoor distribution system of TD-LTE system. First of all, this paper summarizes the coverage ratio of 3G indoor distribution system, the proportion of traffic absorption and the types of indoor construction network for XX, and analyzes the business requirements and existing problems of the current indoor distribution system. The necessity of construction and the key points of construction. Secondly, the wireless link budget, propagation loss model and indoor distribution planning method of indoor distribution system are studied in this paper. On this basis, the actual design of XX Royal Garden Hotel indoor distribution system, including information source design, system design, sky feed system design and system equipment layout, etc. The design content and key concerned index of each step are studied in detail. Finally, the paper tests the coverage quality of Royal Garden Hotel indoor distribution system, FTP uplink / downlink rate, service connection success rate, indoor signal leakage and so on, and verifies the feasibility of the proposed scheme.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN929.5

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