IP multimedia subsystem and method for MBMS file repair using HTTP servers

• US 9,213,605 B2
• Filed: 09/13/2012
• Issued: 12/15/2015
• Est. Priority Date: 01/23/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Oyman, Ozgur
• Primary Examiner(s): GUYTON, PHILIP A
• Application Number:
  US13/613,902
• Publication Number:
  US 20130246846A1
• Time in Patent Office: 1,188 Days
• Field of Search: 714/18, 714/748
• US Class Current: 1/1
• CPC Class Codes: G06F 11/1402 Saving, restoring, recovering or retrying
• CPC Class Codes: G06F 11/1415 at system level
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 80/10 adapted for application session management, e.g. SIP [Session Initiation Protocol] connection management H04W76/00; arrangements for session management H04L67/14

Abstract

Disclosed in some examples is a method of media repair in an IMS based network, the method includes communicating with an IMS network using SIP to setup a download session with a BMSC over a MBMS bearer; responsive to determining that one or more received encoding symbols of media downloaded using the established MBMS bearer cannot be decoded: requesting a file repair procedure from the IMS network component using a SIP re-invite request, the SIP re-invite request including an address of an HTTP repair server indicated by the IMS network component during the MBMS bearer setup; responsive to receiving a SIP acknowledgement indicating that the request was successful, requesting an HTTP connection with the HTTP server to re-download the one or more encoding symbols of the media that could not be decoded; and receiving the one or more encoding symbols from the HTTP server.

Claims

1. A user equipment (UE) comprising:

a control module configured to determine that one or more encoding symbols of a media file, downloaded using a Multimedia Broadcast Multicast Service (MBMS) bearer from a component of an Internet Protocol Multimedia Subsystem (IMS) network, cannot be decoded and a file repair procedure is required; and

a transmission and reception module configured to;

request the file repair procedure from the component of the IMS network using a Session Initiation Protocol (SIP) re-invite request responsive to the control module determining that the file repair procedure is required;

request a Hypertext Transfer Protocol (HTTP) connection with an HTTP server to re-download the one or more encoding symbols of the media file that could not be decoded responsive to receiving a SIP acknowledgement indicating that the re-invite request was successful; and

receive the one or more encoding symbols from the HTTP server.

2. The UE of claim 1, wherein the transmission and reception module is configured to set up the MBMS bearer using SIP.

3. The UE of claim 1, wherein the SIP re-invite request includes an address of an HTTP server indicated by the component of the IMS network as a file repair server during setup of the MBMS bearer.

4. The UE of claim 1, wherein the transmission and reception module is configured to download the media file using the MBMS bearer by utilizing a File Delivery over Unidirectional Transport (FLUTE) protocol.

5. The UE of claim 1, wherein the component of the IMS network is a Service Coordination Function (SCF).

6. The UE of claim 1, wherein the transmission and reception module communicates with the component of the IMS network over a Long Term Evolution (LTE) network.

7. A non-transitory machine-readable medium that stores instructions which when performed by a machine, cause the machine to perform operations comprising:

communicating with an Internet Protocol Multimedia Subsystem (IMS) network component using a Session Initiation Protocol (SIP) to setup a download session with a Broadcast-Multicast Service Center (BMSC) over a Multi Media Broadcast Multicast Service (MBMS) bearer;

responsive to determining that one or more encoding symbols of media downloaded using the established MBMS bearer cannot be decoded;

requesting a file repair procedure from the IMS network component using a SIP re-invite request, the SIP re-invite request including an address of an HyperText Transfer Protocol (HTTP) repair server indicated by the IMS network component during setup of the MBMS bearer;

responsive to receiving a SIP acknowledgement indicating that the request was successful, requesting an HTTP connection with the HTTP server to re-download the one or more encoding symbols of the media that could not be decoded; and

receiving the one or more encoding symbols from the HTTP server.

8. The non-transitory machine-readable medium of claim 7, wherein the media is downloaded using the MBMS bearer by utilizing a File Delivery over Unidirectional Transport (FLUTE) protocol.

9. The non-transitory machine-readable medium of claim 7, wherein the IMS network component is a Service Coordination Function (SCF).

10. The non-transitory machine-readable medium of claim 7, wherein the HTTP connection is requested using an HTTP GET request.

11. The non-transitory machine-readable medium of claim 7, wherein communicating with the IMS network component includes communicating over a Long Term Evolution (LTE) network.

12. A component of an Internet Protocol Multimedia Subsystem (IMS) network comprising:

a service coordination function (SCF), operating on a computer processor and configured to;

establish a Multi Media Broadcast Multicast Service (MBMS) bearer using a Session Initiation Protocol (SIP) with a user equipment (UE) to provide an MBMS service;

receive a SIP re-invite request from the UE requesting initiation of a file repair procedure using a HyperText Transfer Protocol (HTTP) unicast bearer;

select an HTTP to SIP adapter and generate a SIP invite request to the selected HTTP to SIP adapter;

tear down the MBMS bearer between the UE and a Broadcast-Multicast Service Center user plane function (BMSC.UPF) and forward an acknowledgement to the UE to initiate HTTP based delivery responsive to receiving a SIP acknowledgement message from the selected HTTP to SIP adapter.

13. The component of the IMS network of claim 12, wherein the SCF is configured to send an address of an HTTP repair server upon establishing the MBMS bearer.

14. The component of the IMS network of claim 12, wherein the SCF is configured to generate a SIP invite request to the selected HTTP to SIP adapter responsive to determining that a media item identified in the SIP re-invite request allows MBMS to HTTP protocol switching.

15. The component of the IMS network of claim 12, wherein the SIP invite request to the selected HTTP to SIP adapter includes a session description protocol (SDP) offer and a request Uniform Resource Identifier (URI) pointed to a repair server.

16. The component of the IMS network of claim 15, wherein the request URI includes a user part comprising a content identifier and a domain part including a service provider domain name.

17. A non-transitory machine-readable medium that stores instructions which when performed by a machine, cause the machine to perform operations comprising:

receiving a Session Initiation Protocol (SIP) re-invite request from a User Equipment (UE) in an Internet Protocol Multimedia Subsystem (IMS) network, the re-invite request requesting initiation of a file repair procedure using a HyperText Transfer Protocol (HTTP) unicast bearer, the request including an address of a repair server;

selecting an HTTP to SIP adapter and generating a SIP invite request to the selected HTTP to a SIP adapter;

responsive to receiving a SIP acknowledgement message from the HTTP to the SIP adapter indicating that the HTTP to SIP adapter has setup the file repair procedure with the repair server, tearing down a Multi Media Broadcast Multicast Service (MBMS) download session between the UE and a Broadcast-Multicast Service Center user plane function (BMSC.UPF) and forwarding an acknowledgement to the UE to initiate HTTP based delivery.

18. The non-transitory machine-readable medium of claim 17, wherein the instructions include instructions which when performed by the machine, cause the machine to perform the operations of setting up a MBMS bearer to the UE, wherein the setup includes sending an address of an HTTP repair server.

19. The non-transitory machine-readable medium of claim 17, wherein the instructions include instructions which when performed by the machine, cause the machine to perform the operations of generating a SIP invite request to the selected HTTP to SIP adapter responsive to determining that a media item identified in the SIP re-invite request allows MBMS to HTTP protocol switching.

20. The non-transitory machine-readable medium of claim 17, wherein the SIP invite request to the selected HTTP to SIP adapter includes a session description protocol (SDP) offer and a request Uniform Resource Identifier (URI) pointed to a repair server.

21. The non-transitory machine-readable medium of claim 20, wherein the request URI includes a user part comprising a content identifier and a domain part including a service provider domain name.