METHOD AND SYSTEM OF A COMMUNICATION NETWORK FOR ESTIMATING BITRATE OF AN ENCRYPTED VIDEO STREAM

    公开(公告)号:WO2021256969A1

    公开(公告)日:2021-12-23

    申请号:PCT/SE2020/050618

    申请日:2020-06-15

    Abstract: Disclosed is a method and a system (120) of a communication network (100) for estimating bitrate of an encrypted video stream sent between a service provider (130) and a communication device (150) through a core network (140), the video stream comprising packets, the video stream at least partly having a quasi-periodic, bursty nature. The method comprises obtaining information on arrival time and payload size of the packets of the video stream, and segmenting the video stream into chunks, by, per packet, determining packet interarrival times, and when the determined packet interarrival time is above a first threshold, determining end of a current chunk and a definite length of the current chunk, when the determined packet interarrival time is below the first threshold, determining a preliminary length of the current chunk, when the preliminary length is above a second threshold, determining end of the current chunk, and that the preliminary length of the current chunk is the definite length of the current chunk, when the preliminary length of the current chunk is below the second threshold, add the current packet to the current chunk. The method further comprises estimating the bitrate of the video stream based on the payload size of the packets and the determined definite chunk lengths.

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