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Improving TR Algorithm Based-on ZigBee Protocol in Wireless Sensor Network

Farid, Sohinaz | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 50134 (52)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Afshin Hemmatyar, Ali Mohammad
  7. Abstract:
  8. Wireless Sensor Network (WSN) is a set of cheap wireless sensors that can collect, process and send environment’s data. WSN nodes are battery powered, therefore energy management is a key factor for long live network. One way to prolong lifetime of network is to utilize routing protocols to manage energy consumption. To have an energy efficient protocol, we can apply ZigBee protocols. ZiBgee standard is originated from IEEE802.15.4 standard that is defined for personal wireless networks with low bit rate. Now there are many different routing methods that are defined for ZigBee networks that have applications in different circumstances. These methods usually have been proposed in the network layer such as ZigBee Ad hoc On-demand Distance Vector algorithm and hierarchical routing algorithms that are used in mesh and tree network topology; or they are in the application layer, such as ERD (all packets Enable Rout Discovery), SRD (all packets Support Rout Discovery) and BOS (Routing Based On data Service). Among this routing methods, Tree Routing (TR) that acts in the tree network topology is considered as simple routing protocol with low overhead for ZigBee. In a tree topology, every nodes can be recognized as a parent or child of another node and in this regard there is no cycle. TR algorithm only uses links for its routing. The most important problem of TR is increasing the number of steps to get data to destination. To solve this problem several algorithms were proposed that their focus is on fewer steps. In this research we present a method to develop tree routing based on ZigBee protocol. We consider other parameters such as: the number of node neighbors, the distance to the neighboring node and the number of neighboring nodes for neighboring node. So we can have a better chance to find a better and less costly way in an acceptable computational overhead. Simulation results show that NEWTR-ZigBee improves the lifetime of the network by 5% and decreases the energy consumption of the network by 6% as compared with AODV routing protocol. Furthermore, NEWTR-ZigBee improves the packet delivery ratio of the network by 41% as compared with AODV routing protocol and 7% as compared with ESTR. Because of this improvement, NEWTR-ZigBee improves the throughput of the network too. Moreover, NEWTR-ZigBee reduces the end-to-end delay of the network by 24% as compared with AODV and 10% as compared with ESTR
  9. Keywords:
  10. Wireless Sensor Network ; Zigbee Network ; Routing Algorithm ; Tree Routing Algorithm

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