RATE ADAPTED VIDEO DATA TRANSMISSION METHOD USING END-TO-END CHANNEL STATUS SENSING OVER WIBRO

A method for variably controlling the bit rate of video data through the recognition of state of an end-to-end channel in a WiBro(Wireless Broadband) network is provided to control the transmission bit rate of a video codec properly according to the state of a WiBro channel when transmitting video d...

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Main Authors KIM, SUNG KEE, SONG, JI WAN, JOUNG, DO YOUNG, KWON, JAE HOON, KIM, YONG GYOO, LEE, CHANG HYUN, PARK, JAE SUNG, PARK, TAE SUNG
Format Patent
LanguageEnglish
Published 03.06.2009
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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Summary:A method for variably controlling the bit rate of video data through the recognition of state of an end-to-end channel in a WiBro(Wireless Broadband) network is provided to control the transmission bit rate of a video codec properly according to the state of a WiBro channel when transmitting video data. When transmitting video data, the states of transmitting-side and receiving-side wireless channels are classified into a normal state and an abnormal state(200). According to the classified result, the encoding byte rate of the transmitting-side encoder is variably determined. The determined encoding byte rate is compared with a DL MCS(Down Link Modulation & Coding Selection) level which is a parameter of the receiving-side(234). According to the comparison result, the final encoding byte rate of the transmitting-side is variably determined(236).
Bibliography:Application Number: KR20070123443