Patent ID: 8681772
Filing Date: 2014-03-25
Classification: H04J,H04L,H04W

Abstract:
1. A method of performing timing related processing in a packet-based network communications over a microwave communications link, the method comprising: synchronizing clocks of a first packet handling circuitry element and a second packet handling circuitry element separated by a microwave communications link, the first packet handling circuitry element being part of a first microwave station and the second packet handling circuitry element being part of a second microwave station, by determining, by a one of the first packet handling circuitry element and the second packet handling circuitry element, an expected time of day (TOD) value for a time in the future at which a periodic signal is to be commonly received or generated by the first packet handling circuitry element and the second packet handling circuitry element, and transmitting the expected TOD value over the microwave communications link to the other of the first packet handling circuitry element or the second packet handling circuitry element; determining a time of arrival of a packet at the first packet handling circuitry element; transmitting the time of arrival of the packet at the first packet handling circuitry element over the microwave communications link to the second packet handling circuitry element; determining a time of departure of the packet from the second packet handling circuitry element; and setting a correction field of the packet to a value based on at least the time of departure of the packet from the second packet handling circuitry element and the time of arrival of the packet at the first packet handling circuitry element.