本文選題：LTE + 語音業(yè)務(wù)��； 參考：《吉林大學(xué)》2014年碩士論文

【摘要】：移動通信的多業(yè)務(wù)化、高速化要求，促進(jìn)了無線組網(wǎng)技術(shù)的不斷發(fā)展。最新的應(yīng)用體現(xiàn)在LTE(Long Term Evolution)網(wǎng)絡(luò)的大規(guī)模建設(shè)和全球迅猛發(fā)展。LTE是基于數(shù)據(jù)服務(wù)的無線網(wǎng)絡(luò)，是以提供盡量大的數(shù)據(jù)吞吐量為目的，在此基礎(chǔ)上實(shí)現(xiàn)各種通信服務(wù)，2G和3G的發(fā)展路徑是以語音業(yè)務(wù)為基礎(chǔ)，進(jìn)而延伸到互聯(lián)網(wǎng)業(yè)務(wù)。LTE業(yè)務(wù)的發(fā)展與其有著明顯的區(qū)別。事實(shí)上，LTE被認(rèn)為是‘一步到位’且‘技術(shù)可以不斷生長’的無線數(shù)據(jù)通信平臺。為實(shí)現(xiàn)高帶寬、低延時的目的，LTE網(wǎng)絡(luò)在網(wǎng)絡(luò)結(jié)構(gòu)和無線接口采用了不同于3G的技術(shù)，散失了對3G網(wǎng)絡(luò)的后向兼容性，使得新老網(wǎng)絡(luò)間的互通成為亟待解決的問題，尤其體現(xiàn)在語音服務(wù)方面。 LTE的語音解決方案也是運(yùn)營商LTE網(wǎng)絡(luò)建設(shè)及終端廠家重點(diǎn)關(guān)注的問題。LTE網(wǎng)絡(luò)是完全基于分組域架構(gòu)，，無法提供像3G WCDMA和2G GSM基于電路域的語音通話，而要實(shí)現(xiàn)全網(wǎng)VoLTE的語音解決方案，需要終端、無線和核心網(wǎng)的全面支持和優(yōu)化，需要全網(wǎng)部署IMS網(wǎng)絡(luò)，以當(dāng)前技術(shù)來看其實(shí)現(xiàn)難度較大。 本文通過對現(xiàn)有2G GSM網(wǎng)和3G WCDMA網(wǎng)所能承載業(yè)務(wù)的能力、各網(wǎng)已建設(shè)基站數(shù)量及覆蓋范圍等情況的調(diào)查和分析，依據(jù)LTE的業(yè)務(wù)特點(diǎn)，結(jié)合目前網(wǎng)絡(luò)承載語音和數(shù)據(jù)的發(fā)展情況，對未來用戶業(yè)務(wù)進(jìn)行合理分析及預(yù)測�？茖W(xué)預(yù)測話務(wù)分布重點(diǎn)、合理布局網(wǎng)絡(luò)和均衡話務(wù)量，得出LTE網(wǎng)絡(luò)需要建設(shè)的重點(diǎn)區(qū)域及預(yù)計承載的業(yè)務(wù)量，并對LTE原理、網(wǎng)絡(luò)架構(gòu)及幾個關(guān)鍵技術(shù)進(jìn)行了深入研究，在此基礎(chǔ)上，結(jié)合LTE試驗(yàn)網(wǎng)的經(jīng)驗(yàn)數(shù)據(jù)，確定LTE網(wǎng)絡(luò)的建設(shè)原則。主要研究內(nèi)容如下： 在分析2G、3G和LTE網(wǎng)絡(luò)結(jié)構(gòu)和信令流程的基礎(chǔ)上，對當(dāng)前的LTE語音服務(wù)實(shí)現(xiàn)的解決方案中雙待機(jī)(SV-LTE:Simultaneous Voice and LTE)、CSFB (Circuit SwitchedFallback)和VoLTE（Voice LTE），進(jìn)行了歸納比較，分析其優(yōu)劣。通過對某城市聯(lián)通LTE網(wǎng)絡(luò)語音業(yè)務(wù)解決方案設(shè)計，認(rèn)為在LTE未來實(shí)現(xiàn)普遍覆蓋并全面替代3G網(wǎng)絡(luò)之前，語音回落技術(shù)（CS Fallback）是可行的方案，是在產(chǎn)業(yè)界未實(shí)現(xiàn)VoLTE時提出的一種相對較為簡單的語音解決方案。且必將在相當(dāng)長的時期內(nèi)保持存在。 通過對LTE實(shí)現(xiàn)語音回落的技術(shù)原理、要求等進(jìn)行探討，對LTE語音業(yè)務(wù)實(shí)現(xiàn)的網(wǎng)絡(luò)結(jié)構(gòu)提出了建議�；诒疚牡难芯抗ぷ骱统晒麨長TE網(wǎng)絡(luò)建設(shè)中語音業(yè)務(wù)部分，提供了技術(shù)參考，具有理論和實(shí)際工程意義。
[Abstract]:The multi-service and high-speed requirements of mobile communication promote the continuous development of wireless networking technology. The latest applications are embodied in the large-scale construction of the LTE(Long Term Evolution network and the rapid development of the world. LTE is a wireless network based on data services that aims to provide as much data throughput as possible. On this basis, the development path of various communication services such as 2G and 3G is based on voice service, and then extends to the development of Internet service. LTE has obvious difference with it. In fact, LTE is considered a 'one-step' wireless data communication platform. In order to realize the goal of high bandwidth and low delay, LTE network adopts different technology than 3G in network structure and wireless interface, and the backward compatibility of 3G network is lost, which makes the interworking between new and old networks an urgent problem to be solved. Especially in voice services. The voice solution of LTE is also the focus of LTE network construction and terminal manufacturers. LTE network is completely based on packet domain architecture, and can not provide voice calls such as 3G WCDMA and 2G GSM based on circuit domain. In order to realize the voice solution of VoLTE in the whole network, it needs the support and optimization of the terminal, wireless and core network, and the IMS network needs to be deployed in the whole network, which is difficult to realize in view of the current technology. Based on the investigation and analysis of the capacity of the existing 2G GSM network and 3G WCDMA network to carry the service, the number and coverage of the base stations built in each network, and according to the characteristics of the LTE service, combined with the development of the current network carrying voice and data, this paper analyzes the characteristics of the existing 2G GSM network and 3G WCDMA network. Reasonable analysis and forecast of future user service. Scientific prediction of traffic distribution, rational distribution of network and balanced traffic, the key areas to be constructed and the traffic volume expected to be carried out in LTE network are obtained. The principle of LTE, network architecture and several key technologies are studied in depth. On this basis, combined with the empirical data of LTE network, the construction principle of LTE network is determined. The main contents of the study are as follows: Based on the analysis of 2G 3G and LTE network structure and signaling flow, the advantages and disadvantages of SV-LTE: Simultaneous Voice and LTEX / CSFB Circuit switched Fallbackand VoLTE(Voice LTEN are summarized and compared in the current solution of LTE voice service implementation, and the advantages and disadvantages are analyzed. Based on the solution design of LTE network voice service of a certain city Unicom, it is considered that before LTE realizes universal coverage and replaces 3G network in the future, the voice fallback technology (CS Fallback) is a feasible scheme. It is a relatively simple voice solution when VoLTE is not implemented in industry. And must remain in existence for quite a long time. Based on the discussion of the technical principle and requirements of LTE to realize voice fallback, the paper puts forward some suggestions on the network structure of LTE voice service. Based on the research work and results of this paper, it provides a technical reference for the voice service in the construction of LTE network, and has theoretical and practical engineering significance.
【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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相關(guān)期刊論文 前3條

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本文編號：1905493