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A QoS-Aware Routing Algorithm in Wireless Multimedia Sensor Network Using Cross-Layer Information

Sheikh Bagheri Arjmand, Mehdi | 211

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 41656 (52)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Khansari, Mohammad
  7. Abstract:
  8. In this thesis, we propose a QoS-aware routing algorithm for multimedia streaming that uses cross-layer information (application layer and physical layer) in Wireless Multimedia Sensor Networks (WMSN). Our goal is to use cross-layer information to route video packets efficiently and deliver a higher quality video in streaming applications. Our QoS-Aware Multi-Path Selection (QAMPS) method is based on multi-path multi-priority selection algorithm that uses Two-Phase geographic Greedy Forwarding (TPGF) as a routing algorithm. The proposed method guarantees QoS by splitting video streams into I-frames, P-frames and B-frames in the application layer and passes them to the network layer for routing packets in three different classes. The differentiation is based on Bit Error Rate (BER) and delay of the paths. The Path Value (PV) that is calculated by the bit error rate and delay of the path determines the best paths for sending I, P and B-frame streams separately. The simulation results show that the TPGF algorithm in comparison with other multipath algorithms that use face routing has more average numbers of paths and less average number of hops (less delay). Finally, the comparison of our QoS-Aware Multi-Path Selection (QAMPS) method with Context-Aware Multi-path Selection (CAMS) scheme that sends video stream without classification of frames show better quality of our proposed method, based on the frame loss ratio of I, P and B-frames. The proposed method has better PSNR and decreases the frame loss ratio by 20 percent compared with CAMS.
  9. Keywords:
  10. Routing Algorithm ; Service Quality ; Cross Layer Design ; Wireless Sensor Network ; Multimedia Networks

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