The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 21, 2020

Filed:

Jan. 27, 2017
Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Håkan Andersson, Linköping, SE;

Ashim Biswas, Sollentuna, SE;

Daniel Figueiredo, Stockholm, SE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 74/08 (2009.01); H04W 16/14 (2009.01); H04W 24/10 (2009.01); H04W 72/04 (2009.01);
U.S. Cl.
CPC ...
H04W 74/0808 (2013.01); H04W 16/14 (2013.01); H04W 24/10 (2013.01); H04W 72/0486 (2013.01);
Abstract

A technique for performing a clear channel assessment (CCA) in an unlicensed radio frequency (RF) spectrum is described. The CCA is performed for transmitting data () according to a first radio access technology (RAT) in coexistence with a second RAT. As to a method aspect of the technique, signals () are received in the unlicensed RF spectrum. The received signals () are processed according to an operating state. The processing in a first operating state () causes a first delay that is greater than a second delay caused by the processing in a second operating state (). The operating state depends on the presence of data () to be transmitted according to the first RAT in the unlicensed RF spectrum. The CCA is performed based on the processed signals.


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