Dissertation > Excellent graduate degree dissertation topics show

The Study of Heterogeneous Wireless Networks Positioning Technology and Implement Based on OPNET

Author: WanXingFu
Tutor: LiuLin
School: Southwest Jiaotong University
Course: Communication and Information System
Keywords: Heterogeneous wireless networks Vertical handoff Wireless location RSS Data fusion
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 118
Quote: 0
Read: Download Dissertation


In the future, the communication network will be heterogeneous wireless networks that integrate various wireless access technologies, and take the advantages of the different access networks to provide ubiquitous services and meet the needs of broadband, personal and intelligent business. Positioning technology as a key technology in the wireless communication, many functions of terminal rely on this technology, such as:electronic map, the next generation message service and so on. With the rapid development of mobile communications and wireless networks, positioning technology will also be extended from the homogeneous network to heterogeneous wireless networks. In this paper, taking UMTS/WLAN heterogeneous interconnect integration as example, we will make research of positioning technologies in heterogeneous wireless networks.Vertical handoff that is the basis and the key technologies of heterogeneous networks integration is involved in the simulation platform. Therefore, a handoff scenario of UMTS/WLAN heterogeneous wireless networks is built used the OPNET, while a dual-mode terminal which can handoff between UMTS and WLAN networks is designed; then upward vertical handoff signaling process is designed on the basis of downsward vertical handoff signaling process, and the up and down vertical handoff are simulated based on RSS threshold-based vertical handoff strategy to achieve the seamless roaming in the UMTS/WLAN heterogeneous wireless networks.Then positioning algorithms for Heterogeneous Wireless Networks are studied. Firstly positioning scenario of UMTS/WLAN heterogeneous network is built and the factors that effect the performance of positioning in UMTS and WLAN network are analyzed by simulation; and the positioning mode switch based on the vertical handoff are realized. In handoff area, the positioning algorithm based on energy selection and enhanced data fusion is proposed. The results of simulation show that two kinds of algorithm both improved performance of position in that area.

Related Dissertations

  1. The Research of Navigation Multi-Sensor Data Fusion Technology Based on Micro Unmanned Platform,V249.32
  2. Research on Multi-Sensor Embattling and Continious Tracking Technique Applying for Anti-Stealth and Anti-Interference,TN953
  3. Fire Fighting System Research for the Offshore Platform,U698.4
  4. Design and Implementation of Assisted Instructional System Based on BLOG and RSS,TP311.52
  5. Stage Fault Diagnosis Based on Data Fusion,TP18
  6. Research on Clustering Technology for Wireless Sensor Networks,TN915.02
  7. The Design of Personnel Wireless Positioning System for Underground Mine,TN929.5
  8. The Research of WSNs Security Mechanism Based-on Trust,TN915.08
  9. Research of Sensor Node Localization Algorithms in Wireless Sensor Networks,TP212.9
  10. Study of a hybrid wireless location technology,TN929.5
  11. Research and Design of Wireless Localization System Based on ZigBee,TN929.5
  12. The Research on the Vertical Handoff Algorithms in Heterogeneous Wireless Networks,TN929.5
  13. Network Selection Policy Based on Network Coding in Heterogeneous Wireless Networks,TN929.5
  14. Research on Call Admission Decision and Control Algorithm in Heterogenous Networks,TN929.5
  15. Research and Improvement on TCP Performance in Heterogeneous Wireless Networks,TN929.5
  16. Research on Data Fusion Technology of Wireless Sensor Network,TN929.5
  17. Research on Vertical Handoff Algorithm and Decision Mechanism,TN929.5
  18. Research Onspectrum Sensing Algorithm in Cognitive Radio,TN925
  19. Research and Implementation of a Shopping Path Management System Based on WIFI Technology,TP311.52
  20. Wireless sensor network data fusion algorithm,TN929.5
  21. Design and Implementation of Wireless Sensor Network Monitoring System Based on Data Fusion,TN929.5;TP277

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
© 2012 www.DissertationTopic.Net  Mobile