公开(公告)号：US20240251365A1

公开(公告)日：2024-07-25

申请号：US18524751

申请日：2023-11-30

申请人： VIAVI SOLUTIONS INC.

发明人： Jong-Min KIM ,  Young-Kill KIM ,  Hyuck-In KWON ,  Yoo-Chul SHIN ,  Jae-Gab LEE

IPC分类号： H04W56/00 ,  G01S19/13 ,  H04W4/021 ,  H04W24/08

CPC分类号： H04W56/001 ,  G01S19/13 ,  H04W4/021 ,  H04W24/08 ,  H04W56/006

摘要： A test device may be a portable test device that can perform over the air measurements to determine synchronization errors between clusters in a cellular network. The test device can generate a graphical user interface that can show a map of the boundary area between clusters, locations of base stations in the boundary area, locations where over the air measurements were taken by the test device, an indication of whether cells are in synchronization for each measurement location, and a table of actual measurements and derived parameters pertaining to cell phase synchronization, interference and other performance metrics.

公开(公告)号：US20230133796A1

公开(公告)日：2023-05-04

申请号：US17544742

申请日：2021-12-07

申请人： VIAVI SOLUTIONS INC.

发明人： Jong-Min KIM ,  Hyuck-In KWON ,  Young-Kill KIM ,  Sung-Hwa IM ,  Jae-Gab LEE ,  Yoo-Chul SHIN

IPC分类号： H04L5/14 ,  H04B17/345 ,  H04L5/00

摘要： A test device is operable to detect interference in a time division duplex (TDD) cellular network. The test device can automatically detect a TDD frame structure of RF signals received over the air Eagle Eye from a cell site. The test device determines a transition period between uplink (UL) and downlink (DL) transmissions in which no UL and DL signals are being transmitted based on the TDD frame structure. An interference signal is detected during the transition period, and the test device can generate a display of the spectrum during the transition period that includes the interference signal.