公开(公告)号：US12130368B2

公开(公告)日：2024-10-29

申请号：US17884412

申请日：2022-08-09

Applicant: VIAVI SOLUTIONS INC.

Inventor： Joseph Gomez ,  David Royle

IPC: G01S19/23

CPC classification number: G01S19/23

Abstract: A test device determines a Global Navigation Satellite System (GNSS) signal propagation delay in a GNSS signal distribution system (GSDS) for a radio access network. The test device includes a GNSS receiver and a clock. The GNSS receiver is connected at different times to a reference GSDS with a known signal propagation delay and to a device under test (DUT), including a second GSDS having an unknown signal propagation delay. One pulse per second (1PPS) signals are generated by the GNSS receiver and are compared to determine the unknown signal propagation delay of the DUT.

公开(公告)号：US20230130665A1

公开(公告)日：2023-04-27

申请号：US17972072

申请日：2022-10-24

Applicant: VIAVI SOLUTIONS INC.

Inventor： David Royle ,  Mikhail Charny ,  Joseph Gomez ,  Roland Stooss

IPC: G04R20/02 ,  G01S19/13

Abstract: A test device determines a Global Navigation Satellite System (GNSS) signal propagation delay in a GNSS signal distribution system (GSDS) for a radio access network, and can further perform long-term tests on a GSDS without having access to a GNSS satellite. The test device includes a GNSS receiver and a clock that can be re-tuned to accommodate performing tests on the GSDS.