A system and method of operating a content distribution system includes generating a first request for first content by a first user device. Based on the first request for the first content, the first content is pre-positioned by communicating the first content to a downstream storage device closer to a second user device without communicating the first content to the first user device using the downstream storage device; and storing the first content in the downstream storage device as pre-positioned content. The method further includes communicating the first content to the second user device from the downstream storage device.

A system and method of operating a content distribution system includes generating a first request for first content by a first user device. Based on the first request for the first content, the first content is pre-positioned by communicating the first content to a downstream storage device closer to a second user device without communicating the first content to the first user device using the downstream storage device; and storing the first content in the downstream storage device as pre-positioned content. The method further includes communicating the first content to the second user device from the downstream storage device.

The present disclosure relates to a method of transmitting multimedia content in a broadcast communication system, and comprises the steps of: identifying protocol information mapped for each service corresponding to multimedia content; transmitting service-related information including the identified protocol information mapped for each service; and transmitting multimedia content corresponding to related services to a receiving side by using the identified protocol.

The present disclosure relates to a method of transmitting multimedia content in a broadcast communication system, and comprises the steps of: identifying protocol information mapped for each service corresponding to multimedia content; transmitting service-related information including the identified protocol information mapped for each service; and transmitting multimedia content corresponding to related services to a receiving side by using the identified protocol.

Systems and methods are described for delivering regional content for a lineup over a national network. A content provider may select a particular regional broadcast for inclusion in a regional service lineup. The content provider may be able to broadcast multiple, or even all, services nationally. At regional distribution centers, a multiplexer may select only those services that are desired for the region in response to in-stream signals. In some instances, a single region-specific version of a given service may be selected from multiple versions broadcasted nationally. The regional lineup, including the selected services, can then be multiplexed and transmitted to customers throughout the region.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as long term evolution (LTE). A method for handling reception of a plurality of media streams in a mission critical (MC) system is provided. The method includes transmitting, by an MC server, a request to each of one or more receiving devices for receiving a plurality of media streams from a plurality of transmitting devices; receiving, by the MC server, a response from each one of the one or more receiving devices for receiving a number of media streams among the plurality of media streams transmitted by the one or more of the plurality of transmitting devices and updating the number of media streams to be received by each one of the one or more receiving devices as a counter value; identifying, by the MC server, the one or more receiving devices intended to receive the media streams from the one or more of the plurality of transmitting devices based on a synchronization source (SSRC) identifier associated with media streams of each of the one or more of the plurality of transmitting devices and the counter value; and transmitting, based on the SSRC identifier and the counter value, by the MC server, media streams from the one or more of the plurality of transmitting devices to the identified one or more receiving devices.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as long term evolution (LTE). A method for handling reception of a plurality of media streams in a mission critical (MC) system is provided. The method includes transmitting, by an MC server, a request to each of one or more receiving devices for receiving a plurality of media streams from a plurality of transmitting devices; receiving, by the MC server, a response from each one of the one or more receiving devices for receiving a number of media streams among the plurality of media streams transmitted by the one or more of the plurality of transmitting devices and updating the number of media streams to be received by each one of the one or more receiving devices as a counter value; identifying, by the MC server, the one or more receiving devices intended to receive the media streams from the one or more of the plurality of transmitting devices based on a synchronization source (SSRC) identifier associated with media streams of each of the one or more of the plurality of transmitting devices and the counter value; and transmitting, based on the SSRC identifier and the counter value, by the MC server, media streams from the one or more of the plurality of transmitting devices to the identified one or more receiving devices.

A transmission device according to the present disclosure includes: a transmission unit configured to output, to a transmission channel, a plurality of packets each including a payload and a header added to the payload, the payload including pixel data corresponding to one line included in an image of one frame; and an identification information adder that adds identification information of the pixel data to at least a partial region of the payload.

An ultrasound system with a multimedia information distribution system comprising: a video processor generating a sequence of video frames of at least the ultrasound diagnostic images of a sequence of ultrasound diagnostic images; a media editor for combining the ultrasound video frames with further audio/video data to generate multimedia data; a multimedia encoder encoding the multimedia data in the form of a multimedia file; a media streaming module receiving the said multimedia file and generating a real-time stream of the sequence of multimedia data encoded in the said multimedia file; a web server allowing access to the real-time stream of the multimedia data upon request by a remote client to access the said multimedia file. A corresponding computer implemented method is also disclosed.

A throughput division means (11) divides a throughput of a communication between a video delivery server configured to deliver, in a plurality of delivery modes, video data to a user terminal device used by a user and the user terminal device in a delivery period of the video data, according to a period of each delivery mode. A playback bit rate estimation means (12) estimates a playback bit rate of the video data, based on a throughput divided according to a period of the delivery mode. Thus, estimation precision of a video playback bit rate can be improved even when a video delivery server delivers video data in a plurality of delivery modes.