Streaming of media in a multimedia messaging service
A communication method, comprising the steps of a sender 21 sending a message comprising at least one streamable component and information describing it to a communication server MMSC and the communication server responsively sending to a receiver 24 a notification message to notify about the availability of the streamable component. The notification message is a multimedia message comprising the description for the streamable component. The communication server MMSC and the receiver form a streaming session for transferring the streamable component using the information describing the streamable component. The communication server MMSC then streams the streamable component to the receiver 24 in sequential sub-parts in the streaming session. Corresponding to the method, a communication system 20 , a communication server MMSC, a communication device 21, 24 and computer program products for them are also described.
1. A multimedia message service center in a communication system, comprising:
at least one multimedia message server at an apparatus in the communication system, configured to:
send a notification message to a receiving device, the notification message indicating availability of a streamable media content and including presentation description information related to streaming of the streamable media content; and
a media server at an apparatus in the communication system, the media server indicated in the notification message and configured to:
establish an upload streaming session with the sending device; and
upload and store streamable media content from the sending device in the upload streaming session;
establish a download streaming session with the receiving device based on the presentation description information in the notification message;
download the stored streamable media content to the receiving device in the download streaming session; and
wherein the media server is configured to upload and store at least a portion of the streamable media content in the uploading streaming session simultaneously with downloading at least a portion of the stored streamable media content in the download streaming session;
and wherein the multimedia message server sends the notification message to the receiving device after the media server stores a portion of the streamable media content uploaded from the sending device.
2. The multimedia message service center of claim 1 , wherein the presentation description information comprises one or more of:
a network address of the media server,
information about an access mechanism for accessing the streamable multimedia content from the media server,
a type of the media content,
an encoding scheme used to encode the media content, and
an indication of a transport protocol to be used to access the media content from the media server.
3. The multimedia message service center of claim 1 , wherein the presentation description information comprises:
identification of a server at which information for establishing a streaming session with the media server is located; and
an access mechanism for retrieving the information from the identified server.
4. The multimedia message service center of claim 1 , wherein the presentation description information comprises information sufficient for the receiving device to download the streamable media content by streaming.
5. The multimedia message service center of claim 1 , wherein the at least one multimedia message server and the media server are merged into a single network entity.
6. The multimedia message service center of claim 1 , wherein the at least one multimedia message server and the media server are different network entities from one another.
7. The multimedia message service center of claim 6 , wherein the at least one multimedia message server and the media server are located at different geographic locations from one another.
8. The multimedia message service center of claim 1 , wherein the media server is configured to download the stored streamable media content to the receiving device as a sequence of content sub-parts.
9. The multimedia message service center of claim 1 , wherein the media server is configured to download the stored streamable media content to the receiving device using Hypertext Transport Protocol (HTTP).
10. A method of streaming media content received at a multimedia message service center from a sending device, to a receiving device, comprising:
establishing an upload streaming session with the sending device;
uploading and storing streamable media content from the sending device in the upload streaming session;
after storing a portion of the streamable media content uploaded from the sending device, sending a notification message to the receiving device, the notification message indicating availability of the streamable media content and including presentation description information related to streaming of the streamable media content;
establishing a download streaming session with the receiving device based on the presentation description information in the notification message; and
downloading the stored streamable media content to the receiving device in the download streaming session simultaneously with the uploading and storing of at least a portion of the streamable media content from the sending device.
11. The method of claim 10 , wherein the multimedia message service center comprises:
at least one multimedia message server, configured to perform the step of sending the notification message; and
a media server, configured to perform the establishing, uploading and storing, and downloading steps.
12. The method of claim 11 , wherein the presentation description information comprises one or more of:
a network address of the media server,
information about an access mechanism for accessing the streamable multimedia content from the media server,
a type of the media content,
an encoding scheme used to encode the media content, and
an indication of a transport protocol to be used to access the media content from the media server.
13. The method of claim 11 , wherein the presentation description information comprises:
identification of a server at which information for establishing a streaming session with the media server is located; and
an access mechanism for retrieving the information from the identified server.
14. The method of claim 10 , wherein the presentation description information comprises information sufficient for the receiving device to download the streamable media content by streaming.
15. The method of claim 10 , wherein the downloading step comprises:
downloading the stored streamable media content to the receiving device as a sequence of content sub-parts.
16. The method of claim 10 , wherein the downloading step comprises:
downloading the stored streamable media content to the receiving device using Hypertext Transport Protocol (HTTP).