Method and apparatus for assigning video bitrate in mobile communication system
An embodiment provides a method for supporting video transmission and reception in a bitrate selection server of a mobile communication system. The method includes receiving a metadata request of a video from a terminal. The method also includes transmitting the received metadata request to a media server based on the request; receiving a metadata response from the media server. The method also includes storing the received video metadata and transmitting the received video metadata to the terminal. The method also includes requesting subscriber information of the terminal to a Policy and Changing Rules Function (PCRF) and receiving the subscriber information. The method also includes receiving a video segment request of the video from the terminal. The method also includes determining a bitrate of the video based on at least one of the video metadata and the subscriber information.
1. A method for supporting video transmission and reception in a bitrate selection server of a mobile communication system, the method comprising:
receiving a metadata request of a video from a terminal;
transmitting the received metadata request to a media server based on the metadata request;
receiving a video metadata response from the media server;
storing the received video metadata and transmitting the received video metadata to the terminal;
requesting subscriber information of the terminal to a Policy and Charging Rules Function (PCRF) and receiving the subscriber information;
receiving a video segment request of the video from the terminal;
sending a request for information of a base station and the terminal corresponding to the video segment request of the video to the base station;
receiving the information of the terminal and the base station from the base station; and
determining a bitrate of the video based on the video metadata, the subscriber information, and the information of the terminal and the base station,
wherein the receiving of the information of the terminal and the base station comprises receiving at least one of, a number of a Radio Resource Blocks (RBs) assigned to a video traffic of the whole terminals in a cell by the base station and a number of RBs necessary to transfer data to each of the terminals, from the base station.
2. The method of claim 1 , wherein the receiving of the video segment request comprises receiving information including an identifier of a base station transmitting or receiving a signal to or from the terminal.
3. The method of claim 1 , wherein the receiving of the response of the metadata comprises receiving information including a user Quality of Experience (QoE) information according to each of the bitrates of the video, and a Peak Signal-to-Noise Ratio (PSNR) value or a Mean Opinion Score (MOS) value according to each of the bitrates or each of the responses of the video.
4. A bitrate selection server for supporting transmission and reception of a video in a mobile communication system, the bitrate selection server comprising:
a transmission and reception unit configured to transmit and receive a signal to or from another communication entity; and
a control unit configured to control the transmission and reception unit, receive a metadata request of a video from a terminal, transmit the received metadata request to a media server based on the request, receives a metadata response from the media server, store the received video metadata, transmits the metadata to the terminal, request a subscriber information of the terminal to a Policy and Charging Rules Function (PCRF), receive the subscriber information, receive video segment request of the video from the terminal, send a request for information of a base station and the terminal corresponding to the video segment request of the video to the base station, receive the information of the terminal and the base station from the base station, and determine the bitrate based on the video metadata, the subscriber information, and the information of the terminal and the base station, wherein the control unit receives at least one of, a number of a Radio Resource Block (RB) assigned to a video traffic of the whole terminals in a cell by the base station and a number of the RB necessary to transfer data to each of the terminals, from the base station.
5. The bitrate selection server of claim 4 , wherein the control unit is configured to receive information including an identifier of a base station transmitting or receiving a signal to or from the terminal.
6. The bitrate selection server of claim 4 , wherein the control unit is configured to receive information including a user Quality of Experience (QoE) information according to each of the bitrates of the video, and a Peak Signal-to-Noise Ratio (PSNR) value or a Mean Opinion Score (MOS) value according to each of the bitrates or each of the responses of the video, from the media server.