Patent ID: 9432751
Filing Date: 2016-08-30
CPC Classification: H04B,H04J,H04L,H04Q

Claim Text:
1. A method of providing transparent clock functionality for a optical network node, comprising: receiving a packet in optical form by a transparent clock converter; converting the packet into an electrical form; setting a reserved field of the packet to an ingress time of the packet into the transparent clock converter; converting the packet with the set reserved field into an optical form by the transparent clock converter; receiving the packet with the set reserved field in optical form by a network switch; performing network routing by the network switch; transmitting the packet with the set reserved field in optical form by the network switch; receiving, from the network switch, the packet with the set reserved field in optical form by the transparent clock converter; converting the packet with the set reserved field into an electrical form by the transparent clock converter; and setting a correction field of the packet to a value equal to a prior value of the correction field plus an expected egress time of the packet from the transparent clock converter and minus the ingress time of the packet into the transparent clock converter.