基于信號的高精度定位技術(shù)正在逐漸地由技術(shù)研究轉(zhuǎn)變成實際需求。隨著技術(shù)與服務(wù)的逐漸普及,高精度定位技術(shù)在自動駕駛、無人機、機器人、商業(yè)領(lǐng)域和一些緊急服務(wù)中變得日益重要。隨著我們邁向5G以及超越網(wǎng)絡(luò),這一趨勢不斷增加。同時,小區(qū)網(wǎng)絡(luò)的引入也使得諸如CID,E-CID,OTDOA,UTDOA等定位技術(shù)逐步發(fā)展。這些技術(shù)主要從無線環(huán)境、無線接入和空口干擾等方面逐步探索并實現(xiàn)高精度的定位技術(shù)。近來,由于OTDOA技術(shù)能夠與LTE架構(gòu)和5G網(wǎng)絡(luò)緊密結(jié)合,加之無線信號的魯棒性與普遍性,OTDOA技術(shù)得到了廣泛地關(guān)注。盡管這些方法為某些關(guān)鍵服務(wù)提供了可接受的結(jié)果,但這還不夠。因此需要探索更好的定位方法。本文的主要工作是使用到達時間差和最小二乘法來估計實體的位置。考慮到3GPP中的發(fā)布標準,以表明實體可以精確定位。使用最小二乘法來執(zhí)行更好的位置近似。 

【文章來源】：北京郵電大學(xué)北京市 211工程院校 教育部直屬院校

【文章頁數(shù)】：61 頁

【學(xué)位級別】：碩士

【文章目錄】：
ABSTRACT
摘要
CHAPTER 1 INTRODUCTION
CHAPTER 2 LITERATURE REVIEW
    2.1 POSITIONING IN WIRELESS NETWORK
        2.1.1 System architecture
        2.1.2 Radio Access Network
        2.1.3 Core Network
        2.1.4 air interface
            Physical channel allocation
    2.2 THE ARCHITECTURE OF POSITIONING IN LTE
        2.2.1 control plane
        2.2.2 User plane
    2.3 THE PROCEDURE OF POSITIONING
        2.3.1 Signaling of Client Type and QoS
    2.4 POSITIONING METHODS
        2.4.1 Cell Identity (CID)
        2.4.2 E-CID
    2.5 OTDOA POSITIONING
        2.5.1 Reference signal time difference measurement(RSTD)
        2.5.2 Positioning Reference Signal(PRS)
        2.5.3 Mapping to resource element
        2.5.4 Transmission schedule
        2.5.5 OTDOA positioning procedures
            2.5.5.1 Protocol layering for control plane
            2.5.5.2 Protocol layering in the user plane
    2.6 POSITIONING IN 5G
        2.6.1 Architecture of NG-RAN
        2.6.2 Positioning operation
CHAPTER 3 MODELING AND PERFORMANCE OF POSITIONING BASED ON RADIO SIGNALS
    3.1 PROBLEM STATEMENTS
    3.2 SYSTEM MODEL
    3.3 TRANSMISSION BLOCK
    3.4 CHANNEL MODEL
    3.5 THE RECEIVER
    3.6 LEAST SQUARES
    3.7 ENHANCED CELL IDENTITY
CHAPTER 4 SIMULATION AND RESULTS ANALYSIS
    4.1 SIMULATION SETUP
    4.2 SIMULATION PARAMETERS:
    4.3 RESULTS AND ANALYSIS
        4.3.1 Analysis of all methods
CHAPTER 5 CONCLUSION
REFERENCE
ACKNOWLEDGEMENT



本文編號：3564458