Methods and Systems for Multicast Control and Channel Switching for Streaming Media in an IMS Environment
First Claim
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1. A method for changing streaming media channels comprising:
- receiving streaming media channels and buffering data associated with each of said streaming media channels;
transmitting a first streaming media channel toward a client device;
receiving a Session Initiation Protocol (SIP) message with information associated with a change in streaming media channels from said first streaming media channel to a second streaming media channel;
ceasing transmission of said first streaming media channel;
commencing transmission of said second streaming media channel toward said client device; and
transmitting a SIP message indicating successful changing of said streaming media channels.
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Abstract
Systems and methods according to the present invention address this need and others by reducing the delay in channel zapping for streaming media, e.g., Internet Protocol television (IPTV). This delay is reduced by performing channel zapping through an Internet Multimedia Subsystem (IMS) architecture using Session Initiation Protocol (SIP) signaling.
57 Citations
30 Claims
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1. A method for changing streaming media channels comprising:
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receiving streaming media channels and buffering data associated with each of said streaming media channels; transmitting a first streaming media channel toward a client device; receiving a Session Initiation Protocol (SIP) message with information associated with a change in streaming media channels from said first streaming media channel to a second streaming media channel; ceasing transmission of said first streaming media channel; commencing transmission of said second streaming media channel toward said client device; and transmitting a SIP message indicating successful changing of said streaming media channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A communications node comprising:
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a first processor in communications with a memory unit for receiving streaming media channels and buffering data associated with each of said streaming media channels, wherein said first processor transmits a first streaming media channel toward a client device; and a second processor for transmitting and receiving Session Initiation Protocol (SIP) messages including information associated with a change in said streaming media channels, wherein said second processor transmits a first message to said first processor to cease transmission of said first streaming media channel and transmits a second message to said first processor to transmit a second streaming media channel toward said client device. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification