Device and method for allocating delay for media processing and transmission in mobile communication network

A method performed by a second terminal, the method comprising:

• receiving a delay message including delay information on one or more nodes located in a transmission path between a first terminal and the second terminal;
• determining whether delays of the one or more nodes are allocable;
• allocating a delay to an allocable node in case that the delays of the one or more nodes are allocable;
• and
• transmitting, to the one or more nodes, an allocation message including information on the allocable node,
• wherein the delay message and the allocation message are a real-time transport protocol control protocol (RTCP) message including direction information, allocation information, and information on one or more nodes to be allocated.

A method for allocating a delay of a network node, the method comprising:

• receiving, from a second terminal, an allocation message including information on one or more nodes located in a transmission path between a first terminal and the second terminal;
• determining whether information on the network node is included in the information on one or more nodes included in the allocation message;
• applying a second delay related to the network node in case that the information on the network node is included in the information on one or more nodes;
• after the second delay is applied, deleting second delay information from the allocation message;
• and
• transmitting a delay message from which the second delay information has been deleted,
• wherein the delay message and the allocation message are a real-time transport protocol control protocol (RTCP) message including direction information, allocation information, and information on one or more nodes to be allocated.

A first terminal comprising:

• a transceiver configured to transmit or receive at least one signal;
• and
• a controller coupled with the transceiver,
• wherein the controller is configured to:
• determine whether a first delay related to the first terminal is necessary,
• transmit, to a second terminal, a delay message including first delay information in case that the first delay is necessary,
• in response to the delay message, receive, from the second terminal, an allocation message including information on one or more nodes located in a transmission path between the first terminal and the second terminal,
• determine whether information on the first terminal is included in the information on one or more nodes included in the allocation message, and
• allocate the first delay in case that the information on the first terminal is included in the information on one or more nodes,
• wherein the delay message and the allocation message are a real-time transport protocol control protocol (RTCP) message including direction information, allocation information, and information on one or more nodes to be allocated.

A second terminal comprising:

• a transceiver capable of transmitting or receiving at least one signal;
• and
• a controller coupled with the transceiver,
• wherein the controller is configured to:
• receive a delay message including delay information on one or more nodes located in a transmission path between a first terminal and the second terminal,
• determine whether delays of the one or more nodes are allocable,
• allocate a delay to an allocable node in case that the delays of the one or more nodes are allocable, and
• transmit, to the one or more nodes, an allocation message including information on the allocable node,
• wherein the delay message and the allocation message are a real-time transport protocol control protocol (RTCP) message including direction information, allocation information, and information on one or more nodes to be allocated.

A network node comprising:

• a transceiver capable of transmitting or receiving at least one signal;
• and
• a controller coupled with the transceiver,
• wherein the controller is configured to:
• receive, from a second terminal, an allocation message including information on one or more nodes located in a transmission path between a first terminal and the second terminal,
• determine whether information on the network node is included in the information on one or more nodes included in the allocation message,
• apply a second delay related to the network node in case that the information on the network node is included in the information on one or more nodes,
• after the second delay is applied, delete second delay information from the allocation message, and
• transmit a delay message from which the second delay information has been deleted,
• wherein the delay message and the allocation message are a real-time transport protocol control protocol (RTCP) message including direction information, allocation information, and information on one or more nodes to be allocated.