Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system. Disclosed is a method of receiving a video segment from at least one streaming server by a client device using hypertext transfer protocol (HTTP) adaptive streaming in a wireless network. The method includes: acquiring media presentation description (MPD) information by receiving an MPD file from the streaming server and parsing the received MPD file; determining a first parameter to minimize a cost function considering both energy consumption required for receiving a video segment and video quality of the segment based on the MPD information; requesting at least one video segment to the at least one streaming server during a first segment request round based on the first parameter; and receiving the at least one video segment from the at least one streaming server.

Abstract: The present disclosure dynamically selects an optimal parameter so as to stably stream an image without user's setting in a network environment. The present disclosure determines (schedules) a path to which a general packet is to be distributed based on a path cost indicator, and determines a symbol size and the number of source symbols, which minimize or sufficiently reduce a cost function.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system. Disclosed is a method of receiving a video segment from at least one streaming server by a client device using hypertext transfer protocol (HTTP) adaptive streaming in a wireless network. The method includes: acquiring media presentation description (MPD) information by receiving an MPD file from the streaming server and parsing the received MPD file; determining a first parameter to minimize a cost function considering both energy consumption required for receiving a video segment and video quality of the segment based on the MPD information; requesting at least one video segment to the at least one streaming server during a first segment request round based on the first parameter; and receiving the at least one video segment from the at least one streaming server.

Abstract: The method of providing a mobile IPTV service, performed in a terminal that receives streams of all channels belonging to a channel group of a currently viewed channel, includes, when a channel is selected, determining whether the selected channel and the currently viewed channel belong to the same channel group, and when the selected channel and the currently viewed channel are determined to belong to the same channel group, decoding, by the terminal, an IPTV channel stream of the selected channel within a currently received channel. Therefore, since the channel group is generated based on channel selection preference, and a multicast stream including a channel stream of the channel group is broadcast, it is possible to decrease average processing complexity and to guarantee rapid channel change when a user changes the channel to another channel in the same channel group.

Abstract: The present disclosure dynamically selects an optimal parameter so as to stably stream an image without user's setting in a network environment. The present disclosure determines (schedules) a path to which a general packet is to be distributed based on a path cost indicator, and determines a symbol size and the number of source symbols, which minimize or sufficiently reduce a cost function.

Abstract: The present invention relates to a method and system for transmitting digital data while waiting for call connection and a mobile communication terminal for the same. If an originating mobile communication terminal attempts call connection, the mobile communication system searches for service subscription information of a terminating mobile communication terminal and confirms whether or not the terminating mobile communication terminal is a subscriber of a data transmission service. If the terminating mobile communication terminal is a subscriber of the data transmission service, the mobile communication system requests and receives call connection waiting information containing a plurality of digital data and matching to the terminating mobile communication terminal from a connection information providing server, and encodes and transmits the call connection waiting information to the originating mobile communication terminal.

Abstract: The method of providing a mobile IPTV service, performed in a terminal that receives streams of all channels belonging to a channel group of a currently viewed channel, includes, when a channel is selected, determining whether the selected channel and the currently viewed channel belong to the same channel group, and when the selected channel and the currently viewed channel are determined to belong to the same channel group, decoding, by the terminal, an IPTV channel stream of the selected channel within a currently received channel Therefore, since the channel group is generated based on channel selection preference, and a multicast stream including a channel stream of the channel group is broadcast, it is possible to decrease average processing complexity and to guarantee rapid channel change when a user changes the channel to another channel in the same channel group.

Abstract: The present invention relates to a method and system for transmitting digital data while waiting for call connection and a mobile communication terminal for the same. If an originating mobile communication terminal attempts call connection, the mobile communication system searches for service subscription information of a terminating mobile communication terminal and confirms whether or not the terminating mobile communication terminal is a subscriber of a data transmission service. If the terminating mobile communication terminal is a subscriber of the data transmission service, the mobile communication system requests and receives call connection waiting information containing a plurality of digital data and matching to the terminating mobile communication terminal from a connection information providing server, and encodes and transmits the call connection waiting information to the originating mobile communication terminal.