Computer Science

Computer Science ›› 2018, Vol. 45 ›› Issue (10): 83-88.doi: 10.11896／j.issn.1002-137X.2018.10.016

• Network & Communication • Previous Articles     Next Articles

Cluster-based Real-time Routing Protocol for Cognitive Multimedia Sensor Networks

LI Ling-li1,2, BAI Guang-wei1, SHEN Hang1,3, WANG Tian-jing1   

  1. College of Computer Science and Technology,Nanjing Tech University,Nanjing 211816,China 1
    State Key Laboratory for Novel Software Technology Nanjing University,Nanjing 210093,China 2
    National Engineering Research Center for Communication and Network Technology, Nanjing University of Posts and Telecommunications,Nanjing 210003,China 3
  • Received:2017-09-11 Online:2018-11-05 Published:2018-11-05

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Abstract: Variability of channel in cognitive radio sensor network makes transmission of multimedia data more difficult.How to make data transmit to sink in real time is the problem faced by many researchers.This paper proposed a Cluster-Based Real-Time Routing (CBRTR) for cognitive multimedia sensor networks.The expected available time of channels was estimated by forecasting PU’s activity based on which the appropriate channel was chosen for data transmissions.Meanwhile,the reliability was considered to control data loss probability within reasonable extent,so that data can be transmitted reliably to sink in required time.When choosing the next hop,this paper not only considered the distance,but also added the expected available time of channels.Therefore,CBRTR reduces the amount of available time as much as possible.Simulation results show that the proposed CBRTR can balance nodes’ energy,prolong network lifetime,and achieve real-time reliable transmission of data.

Key words: Clustering, Cognitive multimedia sensor networks, Real-time routing, Reliability

CLC Number: 

  • TP393
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