Method and apparatus for non-centralized network bandwidth management
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United States of America Patent
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Apr 17, 2007
Grant Date -
Dec 23, 2004
app pub date -
Dec 16, 2003
filing date -
Jun 18, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method of providing distributed video and/or audio communication over a network, such as a power-line communications (PLC) network. By way of example, the network is divided into periodic cycles wherein each cycle comprises a number of time slots. The timing of the cycles is determined by a cycle master that assumes the position when it desires to send a transmission and is unable to detect valid cycles on the network. A portion of each cycle is reserved for the transmission of asynchronous data, the remainder being utilized for isochronous streams. Before transmitting a new stream a transmitter wins one or more open slots by arbitration, wherein the winner is selected based on the priority of the stream to be sent. Transmitters may obtain extra slots to improve quality, integrity, or security of the stream. The mechanisms of the invention are compatible with legacy CDMA devices.
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