Methods and devices for media description delivery

Patent metadata

Field	Value
Publication number	US-10873608-B2
Application number	US-202016829135-A
Country	US
Kind code	B2
Filing date	Mar 25, 2020
Priority date	Nov 2, 2010
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

Methods and devices for providing a media description of a media stream to a client are described. The client is subscribed to a media description delivery service. The media description delivery service comprises a media description delivery rule. A request for a media description delivery is sent to a media server. From the media server a media description is received. It is verified that the received media description complies with the media description delivery rule and if the verification is in the affirmative, a delivery of the media description is initiated to the client.

First claim

What is claimed is:

1. A method implemented by a media presentation description delivery managing device for providing a media presentation description of an adaptive bitrate media stream to a client device over a communication network to support adaptive bitrate streaming, the method comprising:
subscribing the client device to a media presentation description delivery service, the media presentation description delivery service comprising a media presentation description delivery rule;
sending, by the media presentation description delivery managing device, a request for a media presentation description delivery to a media server;
receiving, by the media presentation description delivery managing device, a media presentation description from the media server;
verifying, by the media presentation description delivery managing device, that the received media presentation description complies with the media presentation description delivery rule; and
if the verification is in the affirmative, initiating, by the media presentation description delivery managing device, a delivery of the media presentation description to the client device over the communication network.

2. The method of claim 1 , further comprising receiving, by the media presentation description delivery managing device, a subscription request for the subscribing the client device to the media presentation description delivery service.

3. The method of claim 2 , wherein the subscription request specifies at least one of an address of the client device, an indication for the media presentation description delivery service, and which media presentation description is to be delivered.

4. The method of claim 1 , wherein the delivery of the media presentation description comprises sending the received media presentation description from the media presentation description delivery managing device to the client device.

5. The method of claim 1 , wherein the delivery of the media presentation description comprises sending information from the media presentation description delivery managing device to the client device for enabling the client device to obtain the media presentation description from the media server.

6. The method of claim 1 , wherein the media presentation description delivery rule specifies at least one pre-defined content requirement and wherein in the verification step content of the received media presentation description is compared to the pre-defined content requirement.

7. The method of claim 1 , wherein the media presentation description delivery rule concerns a relation of at least two media presentation descriptions and wherein in the verification step the received media presentation description is one of the at least two media presentation descriptions.

8. The method of claim 7 , wherein a further media presentation description is received by the media presentation description delivery managing device and the further media presentation description is a second one of the at least two media presentation descriptions.

9. The method of claim 8 , wherein the further media presentation description is received earlier in time compared to the media presentation description, and the media presentation description delivery rule specifies that the media presentation description is to be sent only if the media presentation description is an update of the further media presentation description.

10. The method of claim 8 , wherein the further media presentation description is received in response to a sending of a further request for a media presentation description delivery by the media presentation description delivery managing device to the media server.

11. The method of claim 5 , wherein at least one of the media presentation description and the information enabling the client device to obtain the media presentation description that are sent by the media presentation description delivery managing device to the client device are communicated according to a first transport protocol, and wherein at least one of the request for a media presentation description delivery that is sent to the media server and the media presentation description that is received from the media server are communicated according to a second transport protocol.

12. The method of claim 11 , wherein at least one of a further request for a media presentation description delivery and a further media presentation description received from the media server are communicated according to the second transport protocol.

13. The method of claim 11 , further comprising receiving, by the media presentation description delivery managing device, a subscription request for the subscribing the client device to the media delivery service, the subscription request specifying at least one of an address of the client device, an indication for the media presentation description delivery service, and which media presentation description is to be delivered, and wherein the subscription request is communicated according to the first transport protocol.

14. The method of claim 11 , wherein the first transport protocol is a Session Initiation Protocol (SIP).

15. The method of claim 11 , wherein the second transport protocol is a Hyper Text Transfer Protocol (HTTP).

16. A method for providing a media presentation description of an adaptive bitrate media stream provided by a media server to a client device to support adaptive bitrate streaming, wherein the method comprises:
sending a subscription request for subscribing the client device to a media presentation description delivery service from the client device to a media presentation description delivery managing device, wherein the media presentation description delivery managing device is separate from the media server; and
receiving, by the client device, the media presentation description from the media presentation description delivery managing device.

17. The method of claim 16 , wherein the subscription request specifies at least one of an address of the client device, an indication for the media presentation description delivery service, and which media presentation description is to be delivered.

18. A method for providing a media presentation description of an adaptive bitrate media stream provided by a media server to a client device, wherein the method comprises:
sending a subscription request for subscribing the client device to a media presentation description delivery service from the client device to a media presentation description delivery managing device wherein the media presentation description delivery managing device is separate from the media server;
receiving, by the client device from the media presentation description delivery managing device, information enabling the client to obtain the media presentation description from a media server;
sending a request to obtain the media presentation description according to the received information from the client device to the media server; and
receiving, by the client device, the media presentation description from the media server.

19. The method of claim 18 , wherein the subscription request is communicated according to a first transport protocol and at least one of the requests to obtain the media presentation description and the media presentation description that is received from the media server are communicated according to a second transport protocol.

20. The method of claim 19 , wherein the first transport protocol is a Session Initiation Protocol (SIP).

2

Assignees

• Ericsson Telefon Ab L M

Inventors

• Willig Johannes
• Catrein Daniel
• Hartung Frank
• Kampmann Markus
• Gabin Frederic

Classifications

• H04L65/1045

  Proxies, e.g. for session initiation protocol [SIP] · CPC title

• H04L65/612

  for unicast · CPC title

• H04L65/1016 Primary

  IP multimedia subsystem [IMS] · CPC title

• H04L65/104

  in the network · CPC title

• H04L65/4084

  Electricity · mapped topic