US 10,320,869 B2Granted

Network-capacity optimized adaptive HTTP streaming

AssigneeTelefonaktiebolaget LM Ericsson (publ)

InventorsThorsten Lohmar, Torbjorn Einarsson

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Abstract

The present disclosure relates to a technique of adjusting the download of one or more adjustable content streams, the one or more content streams are provided in a network by a server (200) for streaming the one or more content streams to one or more clients (100a, 100b) and each of the one or more content streams comprises a plurality of content segments. A method embodiment comprises the steps of: generating a manifest file comprising one or more media bit rate candidates each of which indicating an encoded media data rate of the content segments of the one or more content streams, wherein the media data rate candidates are generate by considering a perceived quality of the one or more content streams; and manipulating the manifest file by adjusting at least one of the one or more media data rate candidates based on the available data rate between the server (200) and the one or more clients (100a, 100b) for downloading the content segments.

Claims17

Dependent claims

A method of adjusting a download of a content element, wherein the content element is provided in a network by a server for streaming and the content element comprises a plurality of content segments, the method comprising:

a network node selecting a first set of media data rates for the content element, wherein the selection of the first set of media data rates for the content element is based on one or more of:
a category to which the content element is assigned and a perceived quality of the content element, wherein the perceived quality comprises a Quality of Experience (QoE) of the content element;
the network node generating a first manifest file for the content element, wherein the first manifest file comprises a first set of media data rate identifiers, wherein each one of said media data rate identifiers included in the first set of media data rate identifiers identifies a different one of the media data rates included in the first set of media data rates;
the network node transmitting the first manifest file to a client that is remote from the network node;
after transmitting the first manifest file to the client, the network node receiving from the client a first request for a first content segment of the content element;
the network node determining a first available link data rate for a link between the server and the client;
after determining the first available link data rate, the network node determining a second available link data rate for the link between the server and the client;
and
after the client sends to the server the first request for the first content segment of the content element and before the client sends to the server a second request for a second content segment of the content element, performing the following three (3) steps:
(1) the network node selecting a second set of media data rates for a modified manifest file for the content element based on the determined second available link data rate for the link between the server and the client;
(2) the network node, after selecting the second set of media data rates, generating the modified manifest file for the content element, wherein the modified manifest file comprises a second set of media data rate identifiers, wherein each one of said media data rate identifiers included in the second set of media data rate identifiers identifies a different one of the media data rates included in the second set of media data rates, and further the modified manifest file does not include one of the media data rate identifiers included in the first manifest file or includes a new media data rate identifier that is not included in the first manifest file;
and
(3) the network node transmitting to the client the modified manifest file.

10 more elements

A network node for adjusting a download of a content element, wherein the content element is provided in a network by a server for streaming and the content element comprises a plurality of content segments, the network node comprising:

a memory;
and
at least one processor coupled to the memory, wherein the node is configured to:
select a first set of media data rates for the content element, wherein the selection of the first set of media data rates for the content element is based on one or more of:
a category to which the content element is assigned and a perceived quality of the content element, wherein the perceived quality comprises a Quality of Experience (QoE) of the content element;
generate a first manifest file for the content element, wherein the first manifest file comprises a first set of media data rate identifiers, wherein each one of said media data rate identifiers included in the first set of media data rate identifiers identifies a different one of the media data rates included in the first set of media data rates;
transmit the first manifest file to a client that is remote from the network node;
after transmitting the first manifest file to the client, receive from the client a first request for a first content segment of the content element
determine a first available link data rate for a link between the server and the client;
after determining the first available link data rate, determining a second available link data rate for the link between the server and the client;
and
the node is configured to perform the following three steps after the client sends to the server the first request for the first content segment of the content element and before the client sends to the server a second request for a second content segment of the content element:
(1) selecting a second set of media data rates for a modified manifest file for the content element based on the determined second available link data rate for the link between the server and the client;
(2) after selecting the second set of media data rates, generating the modified manifest file for the content element, wherein the modified manifest file comprises a second set of media data rate identifiers, wherein each one of said media data rate identifiers included in the second set of media data rate identifiers identifies a different one of the media data rates included in the second set of media data rates and the modified manifest file does not include one of the media data rate identifiers included in the first manifest file or includes a new media data rate identifier that is not included in the first manifest file;
and
(3) transmitting to the client the modified manifest file.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/130,982Filed 7 Jul 2011
Published: US 2014/0149557 A129 May 2014
Granted: 11 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04L 65/60
Network arrangements, protocols or services for supporting real-time applications in data packet communication: network streaming of media packets
H04L 65/612
For supporting one-way streaming services, e.g. Internet radio: for unicast
H04L 65/765
Media network packet handling: intermediate
H04L 65/80
Network arrangements, protocols or services for supporting real-time applications in data packet communication: responding to QoS

Family

US 2014/0149557 A1Pre-grant publication · published 29 May 2014
US 10,320,869 B2This patent

From the US filing history. Foreign family members aren’t listed.

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