Fig 1.
VANET supporting V2X communication by taking advantage of clustering.
Table 1.
Some recent state-of-the-art approaches for cluster optimization.
Fig 2.
General procedural flow of clustering algorithm.
Table 2.
Optimal cluster formation approach.
Table 3.
Most commonly used notations in the clustering stage.
Table 4.
Optimal cluster head approach.
Table 5.
Cluster leaving approach.
Table 6.
Cluster joining approach.
Table 7.
CH leaving at SCH approach.
Table 8.
Cluster merging approach.
Table 9.
To mitigate hidden node challenges.
Fig 3.
General procedural flow chart for AVOCA.
Table 10.
AVOCA approach.
Table 11.
Computational complexity comparison with state-of-art-algorithms.
Table 12.
Simulation parameters set analogously for all of the algorithms.
Fig 4.
Tx range vs. no. of clusters for different node counts i.e. (a) 30 (b) 40 (c) 50, and (d) 60 for 1km X 1km grid.
Fig 5.
Tx range vs. no. of clusters for different node counts i.e. (a) 30 (b) 40 (c) 50, and (d) 60 for 2km X 2km grid.
Fig 6.
Tx range vs. no. of clusters for different node counts i.e. (a) 30 (b) 40 (c) 50, and (d) 60 for 3km X 3km grid.
Fig 7.
Tx range vs. no. of clusters for different node counts i.e. (a) 30 (b) 40 (c) 50, and (d) 60 for 4kmX 4km grid.
Fig 8.
Network nodes vs. no. of clusters for different Tx Range (mts) i.e. (a) 100 (b) 200 (c) 300, and (d) 400 for 1 x 1 km2 Grid Size.
Fig 9.
Network nodes vs. no. of clusters for different Tx Range (mts) i.e. (a) 100 (b) 200 (c) 300, and (d) 400 for 2 x 2Km2 Grid Size.
Fig 10.
Network nodes vs. no. of clusters for different Tx Range (mts) i.e. (a) 100 (b) 200 (c) 300, and (d) 400 for 3 x 3Km2 Grid Size.
Fig 11.
Network nodes vs. no. of clusters for different Tx Range (mts) i.e. (a) 100 (b) 200 (c) 300, and (d) 400 for 4 x 4Km2 Grid Size.