METHOD AND APPARATUS OF MULTICAST SERVICE FLOW PROCESSING FOR HEADEND CABLE MODEM
First Claim
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1. A method of processing a multicast service flow in a Cable Modem Termination System (CMTS), the method comprising:
- classifying an inputted multicast packet by a session;
composing an internal header including multicast service flow information allocated to the classified session; and
outputting an internal multicast packet including the internal header.
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Abstract
A method and apparatus of processing a multicast service flow for a headend cable modem is provided.
The method of processing the multicast service flow includes: classifying an inputted multicast packet by a session; composing an internal header including multicast service flow information allocated to the classified session; and outputting an internal multicast packet including the internal header.
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Citations
17 Claims
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1. A method of processing a multicast service flow in a Cable Modem Termination System (CMTS), the method comprising:
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classifying an inputted multicast packet by a session; composing an internal header including multicast service flow information allocated to the classified session; and outputting an internal multicast packet including the internal header. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12)
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8. A method of processing a multicast service flow in a CMTS, the method comprising:
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verifying whether an inputted downstream data packet corresponds to a multicast packet, using a destination address of the inputted downstream data packet; searching to verify whether multicast session information exists when the inputted downstream data packet corresponds to the multicast packet; composing an internal header including multicast service flow information allocated to a session when the multicast session information about the inputted downstream data packet exists; and outputting the multicast packet including the composed internal header. - View Dependent Claims (9, 10)
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11. A method of processing a multicast service flow in a CMTS, the method comprising:
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receiving a multicast membership request message and generating session information; determining whether the generated session information exists in a lookup table when the multicast membership request message corresponds to a message of requesting group joining; searching to verify whether service flow information corresponding to the session information exists when the session information exists in the lookup table; and generating and storing the service flow information when the service flow information corresponding to the session information does not exist. - View Dependent Claims (13)
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14. An apparatus for processing a multicast service flow in a CMTS, the apparatus comprising:
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a multicast packet processor to classify an inputted multicast packet by a session, to add an internal header to the multicast packet, the internal header including multicast service flow information allocated to the classified session, and to output the multicast packet; and a header processor to compose a multicast MAC packet based on the internal header, to perform downstream scheduling of the multicast packet using the same scheme as a general service flow, and to transmit the MAC packet to a downstream physical layer. - View Dependent Claims (15, 16, 17)
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Specification