Dissertation > Excellent graduate degree dissertation topics show

Some Improvements on QDSR Protocol in Wireless Ad Hoc Network

Author: WuXiaoJin
Tutor: ZhangLianFang
School: Tianjin University
Course: Applied Computer Technology
Keywords: Wireless Ad Hoc Networks Dynamic Source Routing Available bandwidth Flow Control Flow scheduling
CLC: TN929.5
Type: Master's thesis
Year: 2007
Downloads: 26
Quote: 1
Read: Download Dissertation

Abstract


With the increased bandwidth of the deepening and wireless network card wireless Ad Hoc network research , the transmission of real-time multimedia services in Ad Hoc network has become a new hotspot . Real-time video transmission requires the routing protocol to be able to find a stable transmission path , the bandwidth required . Research group design and implementation of real-time multimedia transmission test bed , based on estimated available bandwidth to the node , the DSR protocol series of QoS extensions [7] . Extended of DSR ( hereinafter referred to as QDSR) in a small-scale network to support real-time video transmission . QDSR using only the access control for controlling the video transmission . But QDSR access control only to ensure that each node has enough available bandwidth to access all flow use , and does not guarantee the requested bandwidth of each stream on a smaller time scale . Some flow due to the competitive channel advantage or short-term burst and occupy a larger bandwidth , while others flow but not its request bandwidth . Of QDSR increase flow control capability : the real-time monitoring of each node after the node , the occupied bandwidth of the traffic flow , under the premise of ensuring the quality of the video streaming on the traffic flow in accordance with the service stream request bandwidth actual the occupied bandwidth be adjusted , thereby improving the transmission quality of the video stream of the QDSR . In the multi-hop flow during transmission , due to the presence within the stream interference , and sometimes there will be a successor nodes for a long time waiting for the precursor node packet , no data packet can be transmitted within a period of time . This will reduce the network bandwidth utilization . To solve this problem , we propose a flow scheduling mechanism to delay the transmission of the packet at the source node , reduce flow interference method to optimize the transmission of multi-hop flow , thereby improving the throughput of multi-hop path . Finally, the authors the NS simulation environment QDSR and the QDSR improved . Simulation results show that the improvements proposed in this paper to improve the performance of QDSR , improve the delivery rate of the video business , and reduce the end to end delay , and more conducive to the transmission of multimedia services in Ad Hoc Networks .

Related Dissertations

  1. The Flow Theroy Investigation of Compressor Cascade with Split,TK474.8
  2. IP QoS technology research,TP393.09
  3. The Research on Routing Protocols and Related Technology of Wireless Mesh Network Based on QoS,TN929.5
  4. The Research and Implementation of Traffic Control System Based on Linux,TP393.06
  5. Research on Frame Traffic Control, Prediction and Energy Efficiency in Wireless Local Area Networks,TN925.93
  6. Bank Agent Charge and Payment Business Platform Design and Implementation,TP311.52
  7. Dynamic Traffic Management System Design and Implementation,TP393.06
  8. FCIP cross-layer flow control design and implementation,TP393.06
  9. RSSI-based indoor positioning wireless self-organizing network algorithm research and implementation,TN929.5
  10. Wireless ad hoc network routing protocol AODV credible,TN929.5
  11. SIC -oriented MAC protocol for wireless ad hoc network design and implementation,TN929.5
  12. MPLS network queue parameters to optimize the design of,TP393.06
  13. The QoS of the network audio transmission system,TP393.06
  14. Design and Implementation of the Campus Network Service Platform and Security Management System,TP393.18
  15. The Study on Hydraulic Balancing Optimization of Fluid Pipeline Network,TV134
  16. Optimization of Tundish Flow Control Devices in T-type Five Strand Bloom by Numerical Simulations,TF777
  17. Research on Remote Monitoring Technology for Levitation and Guidance System of EMS High-Speed Maglev Train,TP277
  18. The Research and Analysis of the End-to-end Network Performance Measurement System,TP393.06
  19. Optimization of e-Government and Implementation,TP399-C2
  20. Research on the Rapid Development of Automatic Flow Control Valve CAD System,TP391.72
  21. Study on Cross Layer Selfish Behavior and Detection Mechanism in Wireless Ad Hoc Networks,TN929.5

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