Method and apparatus for media data delivery control
A method of operating a sending entity in the transmission system includes identifying a fixed delay associated with a transmission of media data in the transmission system and sending, to a receiving entity, information about the fixed delay as a requirement being configured to guarantee that packets for the media data, received by the receiving entity, are delivered to an upper layer of the receiving entity after the fixed delay. A method of operating a receiving entity in the transmission system includes receiving media data and information about a fixed delay associated with the media data and identifying a requirement, being configured to guarantee that packets for the media data are delivered to an upper layer after the fixed delay, from the information about the fixed delay.
1. A method for operating a sending entity in a transmission system, the method comprising:
estimating a buffer size requirement and a fixed delay; and
sending, to a receiving entity in the transmission system:
at least one packet for media data, each of the at least one packet including a transmission timestamp,
information on the fixed delay, and
information on the buffer size requirement for delivering the at least one packet to an application layer of the receiving entity;
wherein one or more packets among the at least one packet are removed from a de-jitter buffer of the receiving entity at a sum of the transmission timestamp and the fixed delay,
wherein the at least one packet is delivered to the application layer by the receiving entity,
wherein the buffer size requirement is estimated based on:
a maximum bitrate related to the at least one packet, and
a difference between a maximum transmission delay and a minimum transmission delay, and
wherein the fixed delay is calculated based on a sum of a forward error correcting (FEC) buffering delay and the maximum transmission delay, if FEC is applied to the at least one packet.