System and method for network-assisted adaptive streaming
AssigneeFuturewei Technologies, Inc.
InventorsXin Wang, Yuqun Fan, Lei Zhou, Xin Liu, Shaobo Zhang, Yongliang Liu
Life of this patent
Estimating the term…
Abstract
A system, method and device are configured to guarantee bandwidth to adaptive streaming clients through negotiation with a network unit to achieve better quality of services in adaptive streaming that utilizes network bandwidth conditions more accurately than based on client estimations.
Claims20
A method for requesting media content in a dynamic adaptive media streaming system over a transmission network, according to a media presentation description (MPD) comprising information identifying a plurality of media segments, the method comprising:
- generating and transmitting, by a user device, a request for a guaranteed bitrate/bandwidth rate (GBR) to the network,
- receiving, at the user device, a response authorizing a GBR for the user device;
- selecting, at the user device, based on the authorized GBR and the MPD information, at least one of the plurality of media segments;
- generating and transmitting a request to a content server identifying the selected at least one of the plurality of media segments;
- and
- receiving from the content server the selected at least one of the plurality of media segments.
An adaptive media streaming method in a network, the method comprising:
- authenticating and authorizing a bandwidth limit of a user based on subscription information of the user in a network;
- receiving a request from a user device coupled to the network for a guaranteed bandwidth rate (GBR) based on a media presentation description (MPD);
- determining if the requested GBR can be authorized, based on the bandwidth limit, the subscription information of the user and the network condition and usage;
- transmitting a GBR response message to the user device in response to receiving the request for the GBR, the GBR response message indicating whether the GBR is authorized;
- after transmitting the GBR response message indicating the requested GBR is authorized, receiving a media segment request from the user device requesting a media segment compatible with the GBR;
- and
- transmitting the requested media segment to the user device.
An adaptive media streaming system, comprising:
- a user device coupled to a network and configured to request a guaranteed bandwidth rate (GBR) based on a media presentation description (MPD) and request a media segment according to an authorized GBR;
- a content server coupled to the network and configured to send the requested media segment to the user device;
- and,
- wherein the network is configured to provide a communications path between the user device and the content server, to authorize a GBR in response to a GBR request from the user device, and send the media segment to the user device in accordance with the authorized GBR.
Dependencies are inferred from the claim text.