QoS Management Traffic and Congestion Control in WSNs

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Kakvan, Mohsen | 2009

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Type of Document: M.Sc. Thesis
Language: English
Document No: 39420 (52)
University: Sharif University of Technology, International Campus, Kish Island
Department: Science and Engineering
Advisor(s): Manzuri Shalmani, Mohammad Taghi
Abstract:
Congestion in Wireless Sensor Networks (WSNs) leads to both packet loss and excessive energy consumption. That is why congestion has to be controlled during the life of a WSN. One of the go well protocols that has tried to tackle congestion in WSNs is PCCP. PCCP utilizes a cross-layer optimization, imposes a hop-by-hop approach and achieves efficient congestion control; however it has got its own shortcomings. Here we have carried out a survey on congestion problem and have proposed a solution called Modified PCCP to elevate the performance of PCCP by making some changes in the scheduler which is designed in the cross layer. Using this model the congestion is controlled and the PCCP protocol becomes more flexible to achieve all sorts of fairness including: simple, weighted and flexible fairness as well as fairness between source and transit data by having different queues inside the scheduler for different types of data. That is why our proposed solution can support both heterogeneous data and homogeneous data while PCCP is only applicable to WSNs that deal with homogeneous data within each node
Keywords:
Wireless Sensor Network ; Traffic Management ; TRAFFIC CONTROL ; PCCP Protocol

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