From: A quantitative study of Cooperative Awareness Messages in production VANETs
Abbreviation/symbol | Meaning |
---|---|
A5, A6 | Autobahn 5/6 |
B CAM | CAM size (bytes) |
C | Transmission bandwidth of 802.11p |
C2C, Car2Car | Car-to-car communication |
CAM | Cooperative awareness message |
d co | Crossover distance |
| Communication range (radius) |
DENM | Decentralized environmental notification message |
| Average distance between vehicles on a lane |
d HS | Hidden station range (radius) |
d | Distance between sender and receiver |
γ | Nakagami signal attenuation parameter |
Γ SNR | Signal-to-noise ratio |
hsnd,hrcv | Antenna height of sender and receiver |
l vehicle | Average length of vehicles |
λ | Signal wavelength |
LDM | Local dynamic map |
μ | Path loss coefficient |
n lanes | Number of overall parallel lanes of a road |
| Number of received CAMs from a single vehicle whilepassing |
φ | Penetration rate of VANET technology |
| Average message reception probability for distance interval [d1,d2] |
| Overall CAM reception probability |
| Message reception probability for Nakagami model |
| Message loss probability due to hidden stations |
| Rate of received CAMs () |
| Rate of sent CAMs within communication range of receiver |
| Rate of received CAMs within communication range ofreceiver |
ρ | Relative channel load |
σ CAM | CAM generation density per meter and second |
σ vehicle | Vehicle density () |
SUMO | Simulator for Urban MObility |
T air | Air-time of message on channel |
T CA | Channel access time |
| Inter-generation time of CAMs from a single sender |
| Inter-reception time of CAMs from senders with distance d |
| Inter-reception time of CAMs from senders with distance d1 to d2 |
T Off | Back-off time for CAM triggering |
t pass | Communication time between vehicles passing in opposite direction |
TraCI | Traffic control interface |
VANET | Vehicular ad-hoc network |
v | Average vehicle speed |
V2V | Vehicle-to-vehicle communication |