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US 11,888,587 B2Granted
Tolerant PCS for accurate timestamping in disaggregated network elements and synchronization method
AssigneeCiena Corporation
InventorsJohn Andrew Earl, David James Evans, David Stuart, Daniel Claude Perras
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Abstract
A network element includes a port; and a device with circuitry configured to encode data for communication to a second device via a plurality of physical channels, and utilize one of the plurality of physical channels as a dedicated timing channel with encoding thereon different from encoding on the other plurality of physical channels, and interface encoded data via the plurality of physical channels with the port for transmission and reception with a second device.
Claims15
A network element comprising:
- a port including a transmitter and a receiver;
- and
- a device comprising circuitry configured to
- encode data for communication to a second device via a plurality of physical channels,
- utilize one of the plurality of physical channels as a dedicated timing channel, to the second device for synchronization therebetween, wherein the dedicated timing channel includes encoding thereon different from encoding on the other plurality of physical channels,
- interface encoded data via the plurality of physical channels with the port for transmission and reception with the second device, and
- perform a three layer timestamp exchange including between a PTP application layer including a Precision Time Protocol (PTP) clock, an interworking function to the dedication timing channel, and the dedicated timing channel.
4 more elements
A method comprising:
- receiving data for transmission;
- encoding the data for communication to a device via a plurality of physical channels;
- utilizing one of the plurality of physical channels as a dedicated timing channel, to the device for synchronization, wherein the dedicated timing channel includes encoding thereon different from encoding on the other plurality of physical channels;
- transmitting the encoded data via the plurality of physical channels through a port communicatively coupled to the second device, the port including a transmitter and a receiver;
- and
- performing a three layer timestamp exchange including between a Precision Timer Protocol (PTP) application layer including a PTP clock, an interworking function to the dedication timing channel, and the dedicated timing channel.
3 more elements
Dependencies are inferred from the claim text.