From: A novel algorithm to form stable clusters in vehicular ad hoc networks on highways
Notation | Description |
---|---|
r | Service channel transmission range |
R | Control channel transmission range |
d | Nodal degree |
SN | Stable neighbors |
CCM | Candidate cluster member |
Δv th | The threshold used to classify neighboring nodes as stable or non stable neighbors |
μ | The mean value of the speed |
σ | The standard deviation of the speed |
u | The suitability value to become a cluster-head |
p | The position of the vehicle |
p norm | The normalized position |
v norm | The normalized speed |
CH | Cluster-head |
CM | Cluster member |
COV | Cluster originating vehicle |
T wait | The waiting time before announcing the eligibility to become a CH |
Γ(t) | A set containing the IDs of the 2r-stable neighbors whose velocities are greater than the velocity of the current vehicle |
Λ(t) | A set containing the IDs of the 2r-stable neighbors whose velocities are less than the velocity of the current vehicle |
N max | The total number of vehicles in Γ(t) at time t |
RT | The residual time of the vehicle in the transmission range of the CH |
NCC | The number of cluster changes per vehicle |
λtr,mean | The average transition rate between clusters |
N i,life | The lifetime of vehicle i during the simulation |
K | The total number of vehicles in the system |
| The average number of the total number of the created clusters |