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Improving GPSR Routing Protocols in VANETs

Khoshyari Kakavand, Daryosh | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 48590 (52)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Hemmatyar, Ali Mohammad Afshin
  7. Abstract:
  8. Vehicular Ad-hoc Network (VANET) is a special class of Mobile Ad-hoc Network (MANET). VANET uses vehicles to make a network between them. In this network, vehicles are equipped by wireless communications devices and many onboard sensors which can disseminate sensed data to the network. Drivers can select a road with low density to drive using this data. Moreover, this data can be used for traffic management system. In this network communication between vehicles is very fragile by rapid changes of topology, fast moving of nodes and other features which make network performance disrupt in many aspects such as end-to-end delay, throughput, and packet delivery ratio and so on. So far, many protocols have been proposed to improve the efficiency of these networks, and each one has its strengths and weaknesses. The main goal of this thesis is improving GPSR routing protocol using ETX metric, A Distance-Based Schemes and A Direction-Based Schemes. ETX metric finds high-throughput paths and minimizes the expected total number of packet transmissions. In addition, using Distance-Based and Direction-Based Schemes number of hop decreases and the route will be more stable. Finally, the result of simulation compared with GPSR and GPCR routing protocols shows that combination of parameters such as ETX metric, distance from current node to next hop node and direction of next hop node can achieve optimal path from source node to destination node. Furthermore, Packet Loss Ratio and Packet Delivery Ratio are improved Significantly
  9. Keywords:
  10. Routing Protocol ; Vehicular Ad Hoc Network (VANET) ; Position Based Routing Protocol ; ETX Metric ; Greedy Premeter Stateless Routing (GPSR) Protocol

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