Video coding and ATM statistical bit rate capability

Abstract

This paper analyses the adequacy of the statistical bit rate (SBR) ATM transfer capability for supporting real time video services, where end to end delay is limited. For these type of services, mean data rates are normally low. However, if a reasonable image quality consistency is imposed, the generated traffic becomes bursty. This results in important bandwidth availability requirements. A method is presented for ensuring that the generated traffic can be transmitted over an SBR connection while respecting the service requirements. Comparison with other transfer capabilities shows that SBR is outstanding in terms of application performance and network resources required.