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Using traffic flow for cluster formation in VANET
- 1. Using Traffic Flow for Cluster Formation in Vehicular Ad-hoc Networks On-MOVE ‘10 By Mohammad S. Almalag Michele C. Weigle Department of Computer Science Old Dominion University Norfolk, VA 10/11/2010
- 9. APPROACH- Network Connectivity Level 10/11/2010 Overall Traffic flow
- 10. APPROACH- Average Distance Level Overall Traffic flow 10/11/2010
- 11. APPROACH- Average Velocity Level Overall Traffic flow 10/11/2010
- 14. SIMULATION First intersection. 10/11/2010
- 15. SIMULATION Second intersection. 10/11/2010
- 17. RESULTS Clusterhead changes vs. Transmission Range at the first intersection. The maximum speed is 40 km/h (25 mph) 10/11/2010 More stable clusters
- 18. RESULTS Clusterhead changes vs. Transmission Range at the second intersection. The maximum speed is 40 km/h (25 mph) 10/11/2010 More stable clusters
Hinweis der Redaktion
- 1. A cluster is a group of nodes that can communicate without disconnection and that identify themselves to be part of a cluster. 2. With the large number of nodes and the lack of routers, a flat routing scheme, where each node acts as a router, may cause serious scalability and hidden terminal problems. using clustering can lead to more node coordination and fewer nodes interfering with each other. 3. Clusterhead is a node that is selected by other nodes in the cluster to coordinate the communication among them. 4. All cluster members select a clusterhead to coordinate the communication among them. This process is carried out by each node broadcasting its information to all other neighboring nodes. After the nodes have decided on the clusterhead, the clusterhead will be able to communicate directly to all other cluster members and may act as the relay node of communications to other cluster members and other nodes in different clusters. Significant time and channel bandwidth will be consumed to complete this process.
- Lowest-ID: in VANETs, the lowest ID clusterhead is not always the ideal selection because the movement of the vehicles is not considered. 2. Highest-Degree: it is not stable for VANETs due to the nature of the nodes movement. If the clusterhead changes its behavior at any moment, the connectivity level could change dramatically. 3. Utility Function: the closest position to the average and the closest velocity to the average of all proximal vehicles are calculated along with connectivity level to determine the most stable clusterhead.