Service layer assisted change of multimedia stream access delivery
First Claim
1. A method in a mobile terminal of changing access delivery of a multimedia stream from unicast delivery to broadcast/multicast delivery in a hybrid unicast-broadcast delivery network, comprising:
- receiving the multimedia stream by unicast delivery over a unicast bearer;
receiving multimedia content timing information that indicates, in advance, when one or more interstices in the content of the multimedia stream will occur, and that also indicates whether an access change during each of the one or more interstices is forbidden;
selectively checking, at one or more times associated with said one or more interstices indicated by the multimedia content timing information, whether the same multimedia stream is also available by broadcast/multicast delivery over a broadcast/multicast bearer; and
selectively initiating a change from unicast delivery of the multimedia stream to broadcast/multicast delivery during an interstice associated with a time at which said checking indicates availability of the multimedia stream by broadcast/multicast delivery, if the multimedia content timing information does not indicate that a change during that interstice is forbidden.
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Accused Products
Abstract
A streaming server sends a multimedia stream for delivery by a hybrid unicast-broadcast delivery network to a mobile terminal. To assist that mobile terminal change access delivery from unicast to broadcast, the streaming server sends multimedia content timing information that indicates one or more interstices in the content of the multimedia stream. The mobile terminal receives such multimedia content timing information upon receiving the multimedia stream by unicast. Although the mobile terminal determines the same multimedia stream is also available by broadcast, the mobile terminal initiates a change from unicast to broadcast during an interstice. Because the mobile terminal delays the access change until an interstice, any data loss resulting from the access change has a minimal effect on a subscriber'"'"'s experience of the multimedia content. Moreover, regular occurrence of interstices ensures that such change will not be significantly delayed, and thus, neither will use of broadcast.
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Citations
24 Claims
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1. A method in a mobile terminal of changing access delivery of a multimedia stream from unicast delivery to broadcast/multicast delivery in a hybrid unicast-broadcast delivery network, comprising:
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receiving the multimedia stream by unicast delivery over a unicast bearer; receiving multimedia content timing information that indicates, in advance, when one or more interstices in the content of the multimedia stream will occur, and that also indicates whether an access change during each of the one or more interstices is forbidden; selectively checking, at one or more times associated with said one or more interstices indicated by the multimedia content timing information, whether the same multimedia stream is also available by broadcast/multicast delivery over a broadcast/multicast bearer; and selectively initiating a change from unicast delivery of the multimedia stream to broadcast/multicast delivery during an interstice associated with a time at which said checking indicates availability of the multimedia stream by broadcast/multicast delivery, if the multimedia content timing information does not indicate that a change during that interstice is forbidden. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A mobile terminal comprising:
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a receiver for communicatively coupling the mobile terminal with a streaming server and configured to receive a multimedia stream from the streaming server by unicast delivery over a unicast bearer or by broadcast/multicast delivery over a broadcast/multicast bearer; and one or more processing circuits communicatively coupled to the receiver and configured to change access delivery of the multimedia stream from unicast delivery to broadcast/multicast delivery in a hybrid unicast-broadcast delivery network by; receiving from the streaming server multimedia content timing information that indicates, in advance, when one or more interstices in the content of the multimedia stream will occur, and that also indicates whether an access change during each of the one or more interstices is forbidden; selectively checking, at one or more times associated with said one or more interstices indicated by the multimedia content timing information, whether the same multimedia stream is also available from the streaming server by broadcast/multicast delivery; and selectively initiating a change from unicast delivery of the multimedia stream to broadcast/multicast delivery during an interstice associated with a time at which said checking indicates availability of the multimedia stream by broadcast/multicast delivery, if the multimedia content timing information does not indicate that a change during that interstice is forbidden. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method in a streaming server of assisting a mobile terminal change access delivery of a multimedia stream from unicast delivery to broadcast/multicast delivery in a hybrid unicast-broadcast delivery network, comprising:
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sending the multimedia stream for unicast and broadcast delivery by said network to one or more mobile terminals; determining multimedia content timing information that indicates when one or more interstices in the content of the multimedia stream will occur; indicating as part of the multimedia content timing information whether an access change during each of the one or more interstices is forbidden; and sending said multimedia content timing information to each of one or more mobile terminals when that mobile terminal begins to receive the multimedia stream from said network by unicast delivery. - View Dependent Claims (16, 17, 18, 19)
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20. A streaming server configured to assist a mobile terminal change access delivery of a multimedia stream from unicast delivery to broadcast/multicast delivery in a hybrid unicast-broadcast delivery network, comprising:
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a stream processing circuit configured to establish and manage the multimedia stream; an interstice determining circuit configured to determine multimedia content timing information that indicates when one or more interstices in the content of the multimedia stream will occur and to indicate as part of the multimedia content timing information whether an access change during each of the one or more interstices is forbidden; and a network interface circuit configured to send the multimedia stream for unicast and broadcast delivery by said network to one or more mobile terminals and to send the multimedia content timing information to each of one or more mobile terminals when that mobile terminal begins to receive the multimedia stream from said network by unicast delivery. - View Dependent Claims (21, 22, 23, 24)
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Specification