【摘要】：隨著移動(dòng)通信技術(shù)的飛速發(fā)展,移動(dòng)通信系統(tǒng)所提供的業(yè)務(wù)也日益豐富和多樣化,而語音業(yè)務(wù)始終是眾多通信業(yè)務(wù)中最基本的業(yè)務(wù)。對于正處在大規(guī)模商用階段的LTE系統(tǒng),其語音業(yè)務(wù)將不再是傳統(tǒng)的電路域承載,而是由分組交換域提供。因此,如何保證LTE系統(tǒng)中用戶對語音業(yè)務(wù)的體驗(yàn)質(zhì)量仍是目前研究的重要問題之一。本文重點(diǎn)研究分析了LTE系統(tǒng)語音業(yè)務(wù)的三大主流解決方案的性能,并提出優(yōu)化方案,保證了用戶的體驗(yàn)質(zhì)量,并研究異構(gòu)網(wǎng)絡(luò)中基于用戶對不同業(yè)務(wù)體驗(yàn)質(zhì)量的小區(qū)擴(kuò)展方案。本文的具體工作和成果如下： 第一,研究分析了過渡性語音解決方案CSFB技術(shù)的KQI及KPI指標(biāo)體系,并利用信令流程分析的方法建立CSFB業(yè)務(wù)KQI與KPI指標(biāo)之間的映射模型,從而通過考察網(wǎng)絡(luò)層面可測量的KPI指標(biāo)來預(yù)估相應(yīng)的KQI大小 第二,研究分析了LTE系統(tǒng)語音業(yè)務(wù)異系統(tǒng)切換方案SRVCC/eSRVCC,并基于OPNET網(wǎng)絡(luò)仿真軟件對eSRVCC切換方案進(jìn)行仿真,通過仿真結(jié)果分析切換過程中影響切換性能的因素,最后針對切換觸發(fā)策略和用戶優(yōu)先級兩個(gè)方面提出優(yōu)化方案。 第三,針對LTE系統(tǒng)語音業(yè)務(wù)目標(biāo)解決方案VoLTE技術(shù),通過對VoIP網(wǎng)絡(luò)仿真平臺(tái)數(shù)據(jù)的分析提出一種基于網(wǎng)絡(luò)參數(shù)的語音質(zhì)量評估方法,并對VoLTE業(yè)務(wù)的KQI及KPI指標(biāo)進(jìn)行分析,進(jìn)而建立KQI與KPI指標(biāo)間的映射模型。 第四,在LTE-Advanced系統(tǒng)中異構(gòu)網(wǎng)絡(luò)環(huán)境下,考慮到用戶對不同業(yè)務(wù)的功率及體驗(yàn)質(zhì)量需求的不同,提出一種基于用戶體驗(yàn)質(zhì)量的自適應(yīng)小區(qū)范圍擴(kuò)展算法,并建立了MATLAB仿真平臺(tái),以驗(yàn)證所提算法的性能。
[Abstract]:With the rapid development of mobile communication technology, the services provided by mobile communication systems are increasingly rich and diversified, and voice services have always been the most basic of many communications services. For the LTE system which is in the large-scale commercial stage, its voice service will not be the traditional circuit domain bearer, but will be provided by the packet switching domain. Therefore, how to ensure the user's experience quality of voice service in LTE system is still one of the most important problems. This paper focuses on the performance of three major solutions for voice services in LTE systems, and proposes an optimized solution to ensure the user's experience quality, and studies the cell extension scheme based on the user's experience quality of different services in heterogeneous networks. The specific work and achievements of this paper are as follows: firstly, the KQI and KPI index system of transitional voice solution CSFB technology is analyzed, and the mapping model between CSFB service KQI and KPI index is established by the method of signaling flow analysis. Therefore, by investigating the measurable KPI index at the network level to estimate the corresponding KQI size second, this paper studies and analyzes the LTE voice service handoff scheme SRVCC/eSRVCC, and simulates the eSRVCC handoff scheme based on OPNET network simulation software. Based on the simulation results, the factors that affect the performance of handoff are analyzed. Finally, an optimization scheme is proposed for switching trigger strategy and user priority. Thirdly, aiming at VoLTE technology, a voice quality evaluation method based on network parameters is proposed by analyzing the data of VoIP network simulation platform, and the KQI and KPI indexes of VoLTE service are analyzed. Then the mapping model between KQI and KPI index is established. Fourthly, in the heterogeneous network environment of LTE-Advanced system, considering the different demands of users for different service power and experience quality, an adaptive cell range extension algorithm based on user experience quality is proposed, and the MATLAB simulation platform is established. To verify the performance of the proposed algorithm.
【學(xué)位授予單位】：北京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN929.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 許慕鴻;;SRVCC增強(qiáng)技術(shù)分析[J];電信網(wǎng)技術(shù);2010年12期

2 貝斐峰;陳旭奇;李新;華f ;;小基站在LTE異構(gòu)網(wǎng)絡(luò)中的應(yīng)用發(fā)展研究[J];電信快報(bào);2014年07期

3 馬洪源;于娟娟;卜忠貴;;TD-LTE網(wǎng)絡(luò)CSFB話音方案部署研究[J];電信工程技術(shù)與標(biāo)準(zhǔn)化;2014年09期

4 閻秀山;周曉津;;LTE語音解決方案和信令流程[J];電信技術(shù);2013年12期

5 許可;;VoLTE語音質(zhì)量評價(jià)方法及測試方案[J];電信網(wǎng)技術(shù);2014年05期

6 羅顯勇;;TD-LTE語音解決方案探討[J];通信與信息技術(shù);2014年03期

7 胡海波;;無線異構(gòu)網(wǎng)絡(luò)發(fā)展綜述[J];現(xiàn)代電信科技;2009年12期

8 譚偉;張文新;馬雨出;;LTE的無線資源管理[J];郵電設(shè)計(jì)技術(shù);2007年03期

9 江宇;;移動(dòng)通信技術(shù)發(fā)展的回顧和展望[J];科技資訊;2007年07期

10 李強(qiáng);;LTE網(wǎng)絡(luò)中語音業(yè)務(wù)承載方案分析[J];網(wǎng)友世界;2012年17期

，

本文編號：2290408