公开(公告)号：US20250088778A1

公开(公告)日：2025-03-13

申请号：US18480477

申请日：2023-10-03

Applicant: Ufi Space co., Ltd.

Inventor： Yu-Min Wang ,  Meng-Chiao Lin ,  Yu Chih Wang ,  Che-Hung Liu

IPC: H04Q11/00 ,  H04L45/28

Abstract: A redundant system and a redundancy method of a fronthaul network are provided. The redundant system includes a first fronthaul multiplexer. The first fronthaul multiplexer includes a first group port, a second group port, a first cascade port, a first protect port, a first active port, and a first uplink circuit. The first uplink circuit includes a first summation circuit and a second summation circuit. A plurality of input terminals of the first summation circuit are coupled to the first group port and the second group port respectively, and an output terminal of the first summation circuit is coupled to the first protect port. A plurality of input terminals of the second summation circuit are coupled to the first cascade port and the output terminal of the first summation circuit respectively, and an output terminal of the second summation circuit is coupled to the first active port.

公开(公告)号：US11575405B1

公开(公告)日：2023-02-07

申请号：US17530475

申请日：2021-11-19

Applicant: Ufi Space co., Ltd.

Inventor： Yu-Min Wang ,  Yu Chih Wang

IPC: H04L7/00 ,  H04L25/00 ,  H04L25/40 ,  H04B1/7087 ,  H04L7/06

Abstract: The disclosure provides a method for correcting a 1 pulse per second (1PPS) signal and a timing receiver. In the embodiments of the disclosure, the proposed method allows the timing receiver to provide a corrected 1PPS signal with better quality to back-end slave devices, thereby ensuring that the synchronization effect of the slave devices is not overly affected by jitter in a single 1PPS signal.