Reducing delay in video telephony

A device for processing data, the device comprising:

• a memory configured to store data;
• and
• one or more processors, the one or more processors configured to:
• transmit the data over a network at a first bit rate;
• identify a reduction in a network link rate of the network from a first network link rate to a second network link rate;
• in response to identifying the reduction in the network link rate, determine a recovery bit rate at which to transmit the data over the network, wherein the recovery bit rate is less than the second network link rate;
• determine a buffering duration based on a difference between a time of the identification of the reduction in the network link rate and an estimated actual time of the reduction in the network link rate;
• and
• determine a recovery rate duration during which to transmit the data at the recovery bit rate based on the recovery bit rate and the buffering duration.

An apparatus for processing data, the apparatus comprising:

• means for transmitting data over a network at a first bit rate;
• means for identifying a reduction in a network link rate of the network from a first network link rate to a second network link rate;
• means for determining, in response to identifying the reduction in the network link rate, a recovery bit rate at which to transmit the data over the network, wherein the recovery bit rate is less than the second network link rate;
• means for determining a buffering duration based on a difference between a time of the identification of the reduction in the network link rate and an estimated actual time of the reduction in the network link rate;
• and
• means for determining a recovery rate duration during which to transmit the data at the recovery bit rate based on the recovery bit rate and the buffering duration.

A non-transitory computer-readable medium having instructions stored thereon that, when executed, cause one or more processors to:

• transmit data over a network at a first bit rate;
• identify a reduction in a network link rate of the network from a first network link rate to a second network link rate;
• determine, in response to identifying the reduction in the network link rate, a recovery bit rate at which to transmit the data over the network, wherein the recovery bit rate is less than the second network link rate;
• determine a buffering duration base d on a difference between a time of the identification of the reduction in the network link rate and an estimated actual time of the reduction in the network link rate;
• and
• determine a recovery rate duration during which to transmit the data at the recovery bit rate based on the recovery bit rate and the buffering duration.