US Patent No. 9,826,261

FAST CHANNEL CHANGE IN A MULTICAST ADAPTIVE BITRATE (MABR) STREAMING NETWORK USING MULTICAST REPEAT SEGMENT BURSTS IN A DEDICATED BANDWIDTH PIPE


Patent No. 9,826,261
Issue Date November 21, 2017
Title Fast Channel Change In A Multicast Adaptive Bitrate (mabr) Streaming Network Using Multicast Repeat Segment Bursts In A Dedicated Bandwidth Pipe
Inventorship Chris Phillips, Hartwell, GA (US)
Jennifer Ann Reynolds, Duluth, GA (US)
Robert Hammond Forsman, Sugar Hill, GA (US)
Kuheli Haldar, Cumming, GA (US)
Assignee ERICSSON AB, Stockholm (SE)

Claim of US Patent No. 9,826,261

1. A method for changing channels in a multicast adaptive bitrate (MABR) communications network, the method comprising:
receiving a channel change (CC) request from a set-top-box (STB) device disposed in a subscriber premises including a plurality
of client devices to change to a target service channel provided as a plurality of MABR streams wherein each MABR stream corresponds
to a particular bitrate representation of the target service channel;

joining the requesting STB device to a multicast ABR stream having a select bitrate representation of the target service channel
using a burst retransmit stream of segments corresponding to the select bitrate representation of the target service channel,
wherein the burst retransmit stream is provided as an MABR stream of repeated segments of a corresponding segment of the select
bitrate representation, the burst retransmit stream being transmitted in a dedicated fast channel change (FCC) pipe portion
of a subscriber premises bandwidth pipe allocated to the subscriber premises; and

if the select bitrate representation of the target service channel is not at a correct bitrate quality provisioned for the
requesting STB device, allocating or reallocating at least a portion of the bandwidth of the subscriber premises bandwidth
pipe to ensure that the correct bitrate quality for the target service channel is reached.