公开(公告)号：US20230121792A1

公开(公告)日：2023-04-20

申请号：US17915264

申请日：2021-03-16

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Inventor： Michael NILSSON ,  Paul FARROW

IPC: H04L65/613 ,  H04L65/612

Abstract: The invention provides a method of media content delivery, where the time taken to deliver each chunk of content is measured, from which the stability or consistency of delivery times are calculated. The amount of data buffered at the user's device awaiting decoding and play-back can then be adjusted (such as by playing out the content slower or quicker), in order to achieve a good compromise between continuous play-out and low end-to-end delay, taking into consideration the current network characteristics.

公开(公告)号：US20230328334A1

公开(公告)日：2023-10-12

申请号：US18027042

申请日：2021-09-24

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Inventor： Michael NILSSON ,  Paul FARROW ,  Tomasz LYKO ,  Matthew BROADBENT ,  Nicholas RACE

IPC: H04N21/647 ,  H04N21/24 ,  H04N21/262 ,  H04N21/845 ,  H04N21/462

CPC classification number: H04N21/64769 ,  H04N21/2402 ,  H04N21/26216 ,  H04N21/8456 ,  H04N21/4621

Abstract: Described is a method of media content delivery, where measurements of network delivery rates are used to determine at which bit rate to request each content segment. The aim is to ensure continuous play-out of good quality segments, without relying on a large buffer, so that end-to-end delay is kept low. The historical network delivery rate is measured on two or more timescales, such as a short-term delivery rate and a long-term delivery rate, and these are used to decide when to request a higher bit rate segment than the previous segment, and when to request a lower bit rate segment than the previous segment.