基于无线电信号的精确定位

发布时间：2022-01-02 15:53

　　基于信号的高精度定位技术正在逐渐地由技术研究转变成实际需求。随着技术与服务的逐渐普及,高精度定位技术在自动驾驶、无人机、机器人、商业领域和一些紧急服务中变得日益重要。随着我们迈向5G以及超越网络,这一趋势不断增加。同时,小区网络的引入也使得诸如CID,E-CID,OTDOA,UTDOA等定位技术逐步发展。这些技术主要从无线环境、无线接入和空口干扰等方面逐步探索并实现高精度的定位技术。近来,由于OTDOA技术能够与LTE架构和5G网络紧密结合,加之无线信号的鲁棒性与普遍性,OTDOA技术得到了广泛地关注。尽管这些方法为某些关键服务提供了可接受的结果,但这还不够。因此需要探索更好的定位方法。本文的主要工作是使用到达时间差和最小二乘法来估计实体的位置。考虑到3GPP中的发布标准,以表明实体可以精确定位。使用最小二乘法来执行更好的位置近似。 

【文章来源】：北京邮电大学北京市 211工程院校 教育部直属院校

【文章页数】：61 页

【学位级别】：硕士

【文章目录】：
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



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