未來無線網(wǎng)絡(luò)需要滿足高吞吐量的3D視頻數(shù)據(jù),虛擬現(xiàn)實(VR),社交網(wǎng)絡(luò),電子銀行,互動游戲等對視頻服務(wù)爆炸式增長的需求。隨著小小區(qū)和電子設(shè)備的增多,將面臨更多的干擾,這些干擾將導(dǎo)致的切換失敗。網(wǎng)絡(luò)密集化縮小了基站(BS)的覆蓋范圍,并減少了每個BS服務(wù)用戶數(shù)量,從而提高了網(wǎng)絡(luò)容量。鑒于全球人口在連接、共享性和速率方面的顯著增加,UDN(超密集網(wǎng)絡(luò))在解決高速數(shù)據(jù)速率需求方面發(fā)揮重要作用。在論文中,分析了基于本地錨節(jié)點的雙連接結(jié)構(gòu)。使用隨機幾何工具分析了超密集網(wǎng)絡(luò)C/U分離雙連接結(jié)構(gòu)的下行鏈路蜂窩網(wǎng)絡(luò)移動感知模型。然后使用所開發(fā)的模型來量化移動性對具有和不具有雙連接結(jié)構(gòu)的密集部署增益的影響。數(shù)值結(jié)果證明了雙連接可以提升移動性性能。

【文章頁數(shù)】：64 頁

【學(xué)位級別】：碩士

【文章目錄】：
ABSTRACT
摘要
Chapter 1 Introduction
    1.1 Thesis goal
    1.2 Thesis Outline
Chapter 2 Background Information
    2.1 The fifth generation 5G
        2.1.1 Vision and requirements
        2.1.2 Performance challenges
        2.1.3 5G Key Performance Indicators(KPIs)
    2.2 Ultra Dense Network(UDN)
        2.2.1 Challenges and performance evaluation
    2.3 Mobility in UDN
        2.3.1 Mobility challenges
        2.3.2 Handover(HO)Rates
        2.3.3 Handover procedures
Chapter 3 Modeling and Performance Evaluation of Dual Connection
    3.1 Problem Statement
    3.2 System model
    3.3 Mobility analysis
        3.3.1 SINR
        3.3.2 Average Throughput
            3.3.2.1 Link probability
            3.3.2.2 Average number of users
            3.3.2.3 Service distance
            3.3.2.4 Static average throughput
            3.3.2.5 Handover delay
            3.3.2.6 The relationship between average throughput and user movement speed
        3.3.3 Spectral efficiency
        3.3.4 Handover failure rate
            3.3.4.1 Handover times
            3.3.4.2 Handover rate
            3.3.4.3 handover failure probability
    3.4 Coverage
Chapter 4 Simulation Result and Analysis
    4.1 Simulation Parameters
    4.2 Average Throughput
    4.3 Spectrum efficiency
    4.4 Coverage
Chapter 5 Conclusion and future work
References
Acknowledgements



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