Patent · US Active

Apparatus and method for frequency-selective occupancy detection

US8787927B2 · kind B2 · utility

0Cited by

2References

24Claims

0Family size

Assignee

Innovationszentrum für Telekommunikationstechnik GmbH IZT · DE

Inventors

Rainer Perthold · Weisendorf, DE
Dieter Weninger · Markt Erlbach, DE
Holger Schlegel · Nuremberg, DE

Key dates

Filing date	Apr 29, 2011
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Apr 29, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04W72/23
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

An apparatus for frequency-selective occupancy detection of a channel in a frequency band includes a detector for detecting a receive spectrum in the frequency band, a provider for providing node frequencies, a determiner for determining node level values, a determiner for determining the threshold curve and a comparer. The provider provides the node frequencies for a threshold curve with respect to a noise floor in the frequency band. The determiner determines the node level values at the node frequencies based on receive level values of the receive spectrum. The determiner determines the threshold curve in the frequency band based on the provided node frequencies and the node level values at the node frequencies. The comparer compares a current power of the receive level values in the channel with a reference power in the channel predetermined by the threshold curve to detect occupancy or non-occupancy of the channel depending on the comparison.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.