Imperial College London
Alternate

ProfessorKinLeung

Faculty of Engineering, Department of Electrical and Electronic Engineering

Tanaka Chair in Internet Technology
 
 
 
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Contact

 

+44 (0)20 7594 6238kin.leung Website

 
 
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Assistant

 

Miss Vanessa Rodriguez-Gonzalez +44 (0)20 7594 6267

 
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Location

 

810aElectrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Rossi:2017:10.1109/ISCC.2017.8024608,
author = {Rossi, G and Leung, KK},
doi = {10.1109/ISCC.2017.8024608},
publisher = {IEEE},
title = {Optimal CSMA/CA protocol for safety messages in vehicular Ad-Hoc networks},
url = {http://dx.doi.org/10.1109/ISCC.2017.8024608},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Vehicular  ad-hoc  networks  (VANETs)  that  enablecommunication  among  vehicles  have  recently  attracted  signif-icant  interest  from  researchers,  due  to  the  range  of  practicalapplications   they   can   facilitate,   particularly   related   to   roadsafety.  Despite  the  stringent  performance  requirements  for  suchapplications,  the  IEEE  802.11p  standard  still  uses  the  carriersensing medium access/collision avoidance (CSMA/CA) protocol.The  latter  when  used  in  broadcast  fashion  employs  a  randomlyselected  backoff  period  from  a  fixed  contention  window  (CW)range,  which  can  cause  performance  degradation  as  a  result  ofvehicular  density  changes.  Concerns  regarding  the  robustnessand  adaptiveness  of  protocols  to  support  time-critical  applica-tions  have  been  raised,  which  motivate  this  work.  This  paperinvestigates  how  the  maximum  CW  size  can  be  optimised  toenhance  performance  based  on  vehicular  density.  A  stochasticmodel is developed to obtain the optimal maximum CW that canbe  integrated  in  an  amended  CSMA/CA  protocol  to  maximisethe single-hop throughput among adjacent vehicles. Simulationsconfirm our optimised protocol can greatly improve the channelthroughput and transmission delay performance, when comparedto  the  standardised  CSMA/CA,  to  support  safety  application  inVANETs.
AU  - Rossi,G
AU  - Leung,KK
DO  - 10.1109/ISCC.2017.8024608
PB  - IEEE
PY  - 2017///
TI  - Optimal CSMA/CA protocol for safety messages in vehicular Ad-Hoc networks
UR  - http://dx.doi.org/10.1109/ISCC.2017.8024608
UR  - http://hdl.handle.net/10044/1/47933
ER  -
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