Video rate adaptation to reverse link conditions

Details Video rate adaptation to reverse link conditions Video rate adaptation to reverse link conditions

H - Electricity

04

N

H04N 7/26 (2006.01) H04B 7/005 (2006.01) H04B 7/26 (2006.01) H04N 7/46 (2006.01) H04N 7/50 (2006.01) H04N 7/24 (2006.01)

Patent

CA 2651513

The disclosure relates to video rate adaptation techniques that may use information from a medium access control (MAC) layer and radio link protocol (RLP) layer. The techniques may greatly reduce video delay by adjusting video encoding rate. For real-time video telephony (VT) applications, these techniques may provide graceful quality degradation and improve user experience, especially when the channel conditions degrade.

L'invention concerne des techniques d'adaptation de débit vidéo susceptibles d'utiliser des informations provenant d'une couche MAC (Medium Access Control) et d'une couche RLP (Radio Link Protocol). Ces techniques permettent de réduire considérablement le retard vidéo par un ajustement du débit de codage de la vidéo. Pour des applications de visiophonie en temps réel, ces techniques permettent d'assurer une détérioration esthétique de la qualité et d'enrichir la pratique de l'utilisateur, en particulier lorsque les conditions présentes sur le canal se dégradent.

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