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1. (WO2017172355) APPARATUSES, SYSTEMS, AND METHODS FOR ACCURATELY MEASURING PACKET PROPAGATION DELAYS THROUGH USB RETIMERS

Pub. No.:    WO/2017/172355    International Application No.:    PCT/US2017/022379
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Wed Mar 15 00:59:59 CET 2017
IPC: G06F 11/30
Applicants: INTEL CORPORATION
Inventors: MCGOWAN, Steven B.
Title: APPARATUSES, SYSTEMS, AND METHODS FOR ACCURATELY MEASURING PACKET PROPAGATION DELAYS THROUGH USB RETIMERS
Abstract:
Methods and apparatuses relating to measuring propagation delays through USB retimers are described. In one embodiment, a retimer apparatus includes a receiver to receive a data block and a timestamp for the data block from an upstream device, a buffer to store the data block and the timestamp for transmittal, a controller to modify the timestamp to generate a modified timestamp that includes a time from a receipt of a first portion of the data block in the buffer until a transmittal of the first portion of the data block from the buffer, and a transmitter to transmit the data block and the modified timestamp to a downstream device.