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Design of a QoS -aware Routing Mechanism for Wireless Multimedia Sensor Networks

Md. Abdul Hamid, Muhammad Mahbub Alam, and Choong Seon Hong Networking Lab, Department of Computer Engineering, Kyung Hee University, Korea. Design of a QoS -aware Routing Mechanism for Wireless Multimedia Sensor Networks. IEEE "GLOBECOM" 2008 proceedings. Presenter : Jiun-Kuei Shiung.

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Design of a QoS -aware Routing Mechanism for Wireless Multimedia Sensor Networks

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  1. Md. Abdul Hamid, Muhammad Mahbub Alam, and Choong Seon Hong Networking Lab, Department of Computer Engineering, Kyung Hee University, Korea Design of a QoS-aware Routing Mechanism forWireless Multimedia Sensor Networks IEEE "GLOBECOM" 2008 proceedings. Presenter : Jiun-Kuei Shiung

  2. Abstract • Key points in WSN • Energy efficiency • In WMSN • QoS – real-time + energy • Contribution • Multi-channel multi-path • Dynamic routing mechanism

  3. Outline

  4. introduction • Novel app let the problem occur . • Hardware is weak in sensor networks. • How to do that? • Load balance. • Monitor path condition. • Contributions • Multiple channels Multiple paths. • Main reasons : load balancing , reliable. • PPDD(path-length-based proportional delay differentiation)

  5. Related work • Before research Locally adjusts the bandwidth and delay requirement based on PPDD

  6. Network model and assumptions • Homogenous • Processing hubs for in-network. • Single radio interface and multi-channel.

  7. QoS-aware Routing Protocol • Multi-path Multi-channel Network Topology

  8. QoS-aware Routing Protocol (MOLS)Mutually Orthogonal Latin Square

  9. QoS-aware Routing Protocol • QoS-aware Packet Scheduling • Classification

  10. QoS-aware Routing Protocol • QoS assurance • Dynamic Bandwidth Adjustment B : bandwidth H: hop count of node. a: factor

  11. QoS-aware Routing Protocol • PPDD(Path-length-based Proportional Delay Differentiation) • Extension from PDD(proportional delay differentiation ) • WTP(Waiting Time Priority) algorithm dHk: average queuing delay of a packet at node k that is H hops away from sink. δ: 1= δH+1 >δH > ··· >δ1 > 0

  12. QoS-aware Routing Protocol • Routing • Source : • Choose paths/channels that meet the bandwidth and delay requirements • Each node : • Adjusts bandwidth and delay. • Data : • Not meet the deadline are discarded. • Best effort traffics are routed through the alternative paths

  13. Performance evaluation • Environment • 100 node in 500m x 500m square area • Sink at [500, 250] • 25 multimedia processing hubs • 7 channels and take 250us as the channel switching delay • Other [14]

  14. Performance evaluation

  15. Conclusion • Improve • Average delay, lifetime and throughput • Now • Minimize switching delay, focus on selection of routes do not require frequent switching . • The next • Import the issues of mobile and multiple sinks.

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