| Resumen |
Vehicular networks is a key technology for efficiently communicating both user’s devices and cars for timely information regarding safe driving conditions and entertaining applications like social media, video streaming, and gaming services, among others. In view of this, mobile communications making use of cellular resources may not be an efficient and cost-effective alternative.Inthiscontext,theimplementationoflight-fidelity(LiFi)invehicularcommunicationscouldbealow-cost,high-datarate,andefficient-bandwidthusagesolution.Inthiswork,weproposeamathematicalanalysistostudytheaveragethroughputin aroadintersectionequippedwithatrafficlightthatoperatesasaserver,whichisassumedtohaveLiFicommunicationlinkswith thefrontlightsofthevehicleswaitingforthegreenlight.Wefurtherassumethatthefrontvehicle(thecarnexttothetrafficlight) isabletocommunicatetothecarimmediatelybehinditbyusingitsowntaillightsandthefrontlightsofsuchvehicle,andsoon and so forth. The behavior of the road junction is modeled by a Markov chain, applying the Queueing theory with an M/M/1 system inordertoobtain the averagequeue length. Then,Little’s theorem is appliedto calculatetheaverage waiting delaywhen the red light is present in the traffic light. Finally, the mathematical expression of the data throughput is derived.
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