Abstract: According to an embodiment of the disclosure, a method for providing media content comprises the steps of: receiving a change request message for requesting a change of at least a part of specific media data constituting media content; updating a signaling message for the consumption of the media content on the basis of the change request message; and transmitting the updated signaling message to a reception entity.

Abstract: The present invention provides a method for a transmission apparatus in a multimedia system. The method comprises a step of transmitting a message including a priority order of media source location information, and three or more pieces of media source location information, wherein the three or more pieces of media source location information include primary media source location information, alternative media source location information and original media source location information.

Abstract: The method for transmitting data in a communication system provided by one embodiment of the present disclosure comprises the steps of: determining a data piece which is not to be transmitted, in view of importance information on respective data pieces constituting a data unit to be transmitted; generating an incomplete data indicator indicating that at least one data piece is not transmitted among all of the data pieces constituting the data unit; and transmitting the incomplete data indicator and the data pieces other than the data piece which has been determined not to be transmitted.

Abstract: The present invention relates to a method whereby a transmission device transmits a packet in a multimedia communication system, the method comprising the steps of: generating a packet; and transmitting the packet to a reception device, wherein the packet comprises two or more data units which can be independently decoded by the reception device, and one of the two or more data units comprises control information related to the packet.

Abstract: The present invention provides a method for a transmission apparatus in a multimedia system. The method comprises a step of transmitting a message including a priority order of media source location information, and three or more pieces of media source location information, wherein the three or more pieces of media source location information include primary media source location information, alternative media source location information and original media source location information.

Abstract: According to an embodiment of the disclosure, a method for providing media content comprises the steps of: receiving a change request message for requesting a change of at least a part of specific media data constituting media content; updating a signaling message for the consumption of the media content on the basis of the change request message; and transmitting the updated signaling message to a reception entity.

Abstract: A method for transmitting media data in a multimedia system is provided. The method includes determining a transport packet header format and a transmission structure that are to be generated based on a transmission requirement of a multimedia service configured by the media data, generating a basic transmission unit of the media data based on the determined transport packet header format and the determined transmission structure, packetizing the media data into at least a packet based on the generated basic transmission unit, and transmitting the packetized media data.

Abstract: The present invention relates to a method and a device for efficiently receiving particular media packets in a multimedia system. The method for receiving media packets in a multimedia system, in which media data are packetized into multiple media packets and then transmitted, according to one embodiment of the present invention comprises the steps of: determining if received media packets comprise access information for receiving particular media data and/or particular information; and if the received media packets comprise the access information, using the access information so as to preferentially receive the particular media data and/or the particular information.

Abstract: A terminal communicating with at least one wireless communication device determines whether a first data is received from the at least one wireless communication device in a first mode, in which power is supplied to a display portion, determines whether a second data is received during a first time period from the time when the first data is received, and switches to a second mode in which the power supplied to the display portion is blocked according to whether the second data is received.

Abstract: The method for transmitting data in a communication system provided by one embodiment of the present disclosure comprises the steps of: determining a data piece which is not to be transmitted, in view of importance information on respective data pieces constituting a data unit to be transmitted; generating an incomplete data indicator indicating that at least one data piece is not transmitted among all of the data pieces constituting the data unit; and transmitting the incomplete data indicator and the data pieces other than the data piece which has been determined not to be transmitted.

Abstract: The present invention relates to a method whereby a transmission device transmits a packet in a multimedia communication system, the method comprising the steps of: generating a packet; and transmitting the packet to a reception device, wherein the packet comprises two or more data units which can be independently decoded by the reception device, and one of the two or more data units comprises control information related to the packet.

Abstract: The present invention relates to a method and a device for efficiently receiving particular media packets in a multimedia system. The method for receiving media packets in a multimedia system, in which media data are packetized into multiple media packets and then transmitted, according to one embodiment of the present invention comprises the steps of: determining if received media packets comprise access information for receiving particular media data and/or particular information; and if the received media packets comprise the access information, using the access information so as to preferentially receive the particular media data and/or the particular information.

Abstract: A method for transmitting media data in a multimedia system is provided. The method includes determining a transport packet header format and a transmission structure that are to be generated based on a transmission requirement of a multimedia service configured by the media data, generating a basic transmission unit of the media data based on the determined transport packet header format and the determined transmission structure, packetizing the media data into at least a packet based on the generated basic transmission unit, and transmitting the packetized media data.

Abstract: A terminal communicating with at least one wireless communication device determines whether a first data is received from the at least one wireless communication device in a first mode, in which power is supplied to a display portion, determines whether a second data is received during a first time period from the time when the first data is received, and switches to a second mode in which the power supplied to the display portion is blocked according to whether the second data is received.

Abstract: Provided is a method of managing personal information in a communication system that provides a Converged Address Book (CAB) service, the method including generating, by a CAB user, a restoration request for restoring a personal document, which includes a document recognition value of a personal document stored in the CAB, current version information of the personal document, and property information instructing restoration of the personal document to a previous version of the current version, transmitting, by the CAB user, the restoration request to a server that manages the CAB through an arbitrary device, and receiving, by the CAB user, a response indicating that the personal document is restored to the previous version of the current version from the server through the arbitrary device.

Abstract: Disclosed are a method and a system in which a client intending to participate in a chat Push-to-talk over Cellular (PoC) group, presents a session participation-invitation reservation to a server when the number limit has been exceeded pursuant to the policy of the chat PoC group, or when a chat PoC group ID exists but a corresponding session has not been initiated. Herein, when a client intending to participate in a chat PoC group receives a response indicating participation is not possible because the number limit of the chat PoC group has been exceeded, the client performs invitation reservation until participation is possible.

Abstract: A system and method provide simultaneous multiple push-to-talk (PTT) over cellular (PoC) multimedia service, and enable a PoC client performing an OMA PoC multimedia communication service to be simultaneously provided with a plurality of media streams, and also allows efficient media transmission through media adaptation adjusting capacity of each of the media streams provided at the same time.

Abstract: A method is disclosed which sets a PoC Box service and transmits information on a service identifier by using a standard SIP, a SDP, an XCAP, and a PAP, in order to remain compatible with conventional PoC technology when performing call processing of session connection using a PoC Box. Further, the method stores only pre-designated media in a PoC Box according to a type of media transmitted in consideration of features of a PoC multimedia session.

Abstract: Disclosed are a method and a system in which a client intending to participate in a chat Push-to-talk over Cellular (PoC) group, presents a session participation-invitation reservation to a server when the number limit has been exceeded pursuant to the policy of the chat PoC group, or when a chat PoC group ID exists but a corresponding session has not been initiated. Herein, when a client intending to participate in a chat PoC group receives a response indicating participation is not possible because the number limit of the chat PoC group has been exceeded, the client performs invitation reservation until participation is possible.

Abstract: A system and method provide simultaneous multiple push-to-talk (PTT) over cellular (PoC) multimedia service, and enable a PoC client performing an OMA PoC multimedia communication service to be simultaneously provided with a plurality of media streams, and also allows efficient media transmission through media adaptation adjusting capacity of each of the media streams provided at the same time.