US 12,256,354 B2
Apparatus and method for detecting group delay information and apparatus and method for transmitting a measurement signal via a transmission medium
Jörg Hellwig, Menden (DE); Andreas Blohmann, Lauf (DE); and Holger Stadali, Erlangen (DE)
Assigned to GIAX GMBH, Erlangen (DE)
Filed by GiaX GmbH, Erlangen (DE)
Filed on Jun. 28, 2023, as Appl. No. 18/342,944.
Application 18/342,944 is a division of application No. 17/123,504, filed on Dec. 16, 2020, granted, now 11,729,734.
Claims priority of application No. 102019220091.5 (DE), filed on Dec. 18, 2019.
Prior Publication US 2023/0345400 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 56/00 (2009.01)
CPC H04W 56/0045 (2013.01) 12 Claims
OG exemplary drawing
 
1. An apparatus for detecting group delay information over frequency for a transmission medium, comprising:
a receiver for receiving a measurement signal to provide a reception signal, the measurement signal comprising at least a first carrier signal at a first carrier frequency, a second carrier signal at a second carrier frequency and a third carrier signal at a third carrier frequency, wherein transmission phase information on the carrier signals are known or derivable, wherein the transmission phase information comprise a first transmission difference between the second carrier signal and the first carrier signal and a second transmission difference between the second carrier signal and the third carrier signal;
a frequency analyzer for analyzing the reception signal to acquire reception phase information on the first carrier signal, the second carrier signal and the third carrier signal, wherein the frequency analyzer is configured to acquire, as the reception phase information, a first reception phase value for the first carrier signal, a second reception phase value for the second carrier signal and a third reception phase value for the third carrier signal; and
a processor
for forming a first combined piece of phase information from the reception phase information from a first pair of carrier signals and for forming a second combined piece of phase information from the reception phase information from a second pair of carrier signals, the second pair of carrier signals differing from the first pair of carrier signals, wherein the processor is configured to calculate a reception difference from the first reception phase value and the second reception phase value as the first combined piece of phase information, and to calculate a second reception difference from the second reception phase value and the third reception phase value as the second combined piece of phase information,
for forming a first piece of group delay information from the first combined piece of phase information and the transmission phase information relating to the first pair of carrier signals and for forming a second piece of group delay information from the second combined piece of phase information and the transmission phase information relating to the second pair of carrier signals, wherein the processor is configured to calculate the first piece of group delay information from the first reception difference and the first transmission difference, and to calculate the second piece of group delay information from the second reception difference and the second transmission difference, and
for associating the first piece of group delay information to a first frequency and the second piece of group delay information to a second frequency, the first frequency being derived from frequencies of the first pair of carrier signals, and the second frequency being derived from frequencies of the second pair of carrier signals.