Methods of transmitting and receiving multicast or broadcast frame in OLT and ONU for WDM-PON, WDM-PON system, and OLT for WDM-PON
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United States of America Patent
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May 7, 2013
Grant Date -
Jun 24, 2010
app pub date -
Oct 15, 2009
filing date -
Dec 22, 2008
priority date (Note) -
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Abstract
Provided are methods of transmitting and receiving a multicast or broadcast frame in an optical line terminal (OLT) and an optical network unit (ONU) for a wavelength division multiplexing (WDM)-passive optical network (PON), a WDM-PON system, and an OLT for a WDM-PON. The method of transmitting a multicast or broadcast frame in an OLT for a WDM-PON includes converting and splitting a multicast or broadcast frame input using a single wavelength into a plurality of wavelengths, combining the split wavelengths, and outputting the multicast or broadcast frame. In this way, a multicast or broadcast frame can be transmitted and received, thereby providing a single copy broadcast (SCB) function in a WDM-PON.
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