US Patent Application 18199697. HYBRID PHY WITH INTERLEAVED AND NON-INTERLEAVED RS-FEC AND FEC MODE DETERMINATION DURING ADAPTIVE LINK TRAINING PROTOCOL simplified abstract
HYBRID PHY WITH INTERLEAVED AND NON-INTERLEAVED RS-FEC AND FEC MODE DETERMINATION DURING ADAPTIVE LINK TRAINING PROTOCOL
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HYBRID PHY WITH INTERLEAVED AND NON-INTERLEAVED RS-FEC AND FEC MODE DETERMINATION DURING ADAPTIVE LINK TRAINING PROTOCOL - A simplified explanation of the abstract
This abstract first appeared for US patent application 18199697 titled 'HYBRID PHY WITH INTERLEAVED AND NON-INTERLEAVED RS-FEC AND FEC MODE DETERMINATION DURING ADAPTIVE LINK TRAINING PROTOCOL
Simplified Explanation
- The patent application describes an apparatus and methods for implementing high-speed Ethernet links using a hybrid PHY (Physical layer) that can be configured to use either a non-interleaved RS-FEC (Reed Solomon Forward Error Correction) sublayer or an interleaved RS-FEC sublayer. - An adaptive link training protocol is used during link training to determine whether to use the non-interleaved or interleaved RS-FEC during link DATA mode. - Training frames are exchanged between link partners, including control and status fields, to request and confirm the desired FEC mode to be used during link DATA mode. - The hybrid PHY includes both interleaved RS-FEC and non-interleaved RS-FEC sublayers for transmitter and receiver operations. - During link training, a determination is made to assess whether the local receiver is likely to encounter decision feedback equalizer (DFE) burst errors. If so, the interleaved FEC mode is selected; otherwise, the non-interleaved FEC mode is selected or remains the default FEC mode. - The apparatus and methods described in the patent application can be implemented for 100 GB ASE-CR1 and 100 GB ASE-KR1 Ethernet links and interfaces.
Original Abstract Submitted
Apparatus and methods for implementing high-speed Ethernet links using a hybrid PHY (Physical layer) selectively configurable to employ a non-interleaved RS-FEC (Reed Solomon Forward Error Correction) sublayer or an interleaved RS-FEC sublayer. An adaptive link training protocol is used during link training to determine whether to employ the non-interleaved or interleaved RS-FEC during link DATA mode. Training frames are exchanged between link partners including control and status fields used to respectfully request a non-interleaved or interleaved FEC mode and confirm the requested FEC mode is to be used during link DATA mode. The hybrid PHY includes interleaved RS-FEC and non-interleaved RS-FEC sublayers for transmitter and receiver operations. During link training, a determination is made to whether a local receiver is likely to see decision feedback equalizer (DFE) burst errors. If so, the interleaved FEC mode is selected; otherwise the non-interleaved FEC mode is selected or is the default FEC mode. The apparatus and methods may be implemented for 100 GB ASE-CR1 and 100 GB ASE-KR1 Ethernet links and interfaces.
