Dissertation > Excellent graduate degree dissertation topics show

The Research of Priority-Based MAC Protocol for WSN

Author: ZhengXiaoQing
Tutor: WangYanNian
School: Zhengzhou University
Course: Applied Computer Technology
Keywords: WSN S-MAC Data Priority Energy Priority NS2
CLC: TP212.9
Type: Master's thesis
Year: 2011
Downloads: 75
Quote: 0
Read: Download Dissertation

Abstract


WSN is a multi-hop self-organized network which is composed of a large number low-cost and small sensor nodes. The sensor nodes communicate in wireless way, and transmit the information to observer what sensor nodes sense, collect and process. In WSN, MAC protocol manages and distributes the shared wireless communication resource, and influences the performance of WSN in directly. WSN is application network, and need support to deal with incident in specific application in order to reduce the delay of important data with incident information. Meanwhile, energy is the bottleneck of WSN, and it is crucial to achieve energy efficient transmission under the premise of important data are transported in higher priority.An improved S-MAC protocol is proposed based on data priority and energy priority. The way is adjust the backoff time according to priority in order to reduce the transmission delay and prolong the lifetime of network. The improved protocol is realized in NS2. This paper’s main work is as follows:(1) This paper improved the IEEE 802.11 data frame to realize the portability of data-priority. The priority of data is identified according to a correlative strategy at the source node in WSN. Both data and its priority are encapsulated into a frame and transmitted between nodes in network. So it is realize the rapid transfer whether in source nodes or in the middle nodes.(2) This paper improved S-MAC protocol on the basis of data priority and energy priority, in order to reduce the transmission delay of higher-priority data and prolong the lifetime of network. When forwarding a data frame, the node adjusts the contention window dynamically according to data priority and energy priority to make sure that the higher-priority data frame are forwarded in higher priority and collisions are reduced.(3) In NS2, this paper realized the improved protocol and test its performance. The experiments showed that the delay of higher-priority data is lower obviously, and the dead nodes are reduced to almost 30% in network, and lifetime of WSN is also prolonged. In this paper, an improved S-MAC protocol is proposed based on data priority and energy priority. The improved protocol not only achieved the efficient transmission for higher-priority data, but also prolonged the lifetime of WSN.

Related Dissertations

  1. Wireless Sensor Net Based Study on Comprehensive Energy Monitoring Technology of Electric Vehicle,U469.72
  2. The Design and Realization of NS2-based PeerCast Simulation Platform,TP311.52
  3. Research of Secure Distributed Cluster Wireless Sensor Network Routing Based on LEACH,TP212.9
  4. Research on MAC Protocols for Underwater Acoustic Networks,TN929.3
  5. Treatment effect and its mechanism of lactose derivatives Gu- 4 in endotoxin shock in mice,R459.7
  6. Research on MAC Protocol for WIreless Sensor Network,TN915.04
  7. HCV NS2TP Gene Regulation Mechanism,R512.63
  8. Gulf War syndrome in rats hippocampal neuronal apoptosis and Omi/HtrA2, Smac expression,R82
  9. Design and Realization of the AAC ZigBeePRO Development System,TN929.5
  10. The Analysis and Improvement of TCP Vegas Performance in MANET,TN929.5
  11. Application and Research of Dynamic Configurable WSN Universal Measure and Control System,TN929.5
  12. Research on Busy Tone Based Mac Protocol in Ad Hoc Network,TN929.5
  13. Research of Routing Optimization and Trust on LR-WPAN,TP212.9
  14. Design and Application of LED Screen Based on WSN Bottom Module,TN312.8
  15. Study on Ethernet MAC Protocol and Its FPGA Implementation,TP393.04
  16. Research on Wireless Sensor Networks and Its Design in Emergency Environmental Monitoring,TN929.5;TP212.9
  17. Multi-channel wireless sensor networks MAC protocol,TP212.9
  18. Power management based on Multi-Radio MAC protocol for wireless sensor networks,TP212.9
  19. Fuzzy Triangle Localization Algorithm in WSN and Simulated Implementation,TN929.5
  20. Research on Expanded Techniques of Mobile IP Bashed on NS2,TN929.5
  21. Ad Hoc Networks road traffic safety monitoring system of high - speed data transmission,TN929.5

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Sensor applications
© 2012 www.DissertationTopic.Net  Mobile