Methods and apparatus for hybrid multicast and unicast...

Details Methods and apparatus for hybrid multicast and unicast... Methods and apparatus for hybrid multicast and unicast...

2004-09-27

2008-09-09

Ngo, Ricky (Department: 2616)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S432000, C370S300000, C370S312000, C370S473000

Reexamination Certificate

active

07423973

ABSTRACT:
Methods and apparatus for hybrid multicast and unicast transmissions in a data network. A method is provided for operating a server on a data network. The method includes computing a multicast cost indicator and a unicast cost indicator that are associated with multicast and unicast transmission of data. The method also includes determining that the multicast cost indicator is less than the unicast cost indicator, and generating a transmission schedule that describes when the data will be multicasted on the data network. The method also includes transmitting the transmission schedule, and multicasting the data according to the transmission schedule.

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Birk and Crupnicoff, “A Multicast Transmission Schedule for Scalable Multi-Rate Distribution of Bulk Data Using Non-Scalable Erasure-Correcting Codes,”Proceedings of Infocom, XP-002333702 (2003).
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Poppe et al., “Guaranteeing Quality of Service to Packetised Voice Over the UMTS Air Interface,”IEEE, pp. 84-91 (Jun. 5, 2000).

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