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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.

Patent No.:

US 9055585 B1

PDFFull Text
Date of Patent:
Jun. 09, 2015

Filed:

Feb. 10, 2011

Power headroom reporting for non-scheduled uplink component carriers

Applicants:

Joachim Lohr, Wiesbaden, DE;

Hidetoshi Suzuki, Yokosuka, JP;

Martin Feuersanger, Brenen, DE;

Alexander Golitschek Edler Von Elbwart, Darmstadt, DE;

Takashi Iwai, Kanazawa, JP;

Inventors:

Joachim Lohr, Wiesbaden, DE;

Hidetoshi Suzuki, Yokosuka, JP;

Martin Feuersanger, Brenen, DE;

Alexander Golitschek Edler von Elbwart, Darmstadt, DE;

Takashi Iwai, Kanazawa, JP;

Assignee:

Panasonic Intellectual Property Corporation of America, Torrance, CA (US);

Attorney:

Seed IP Law Group PLLC

Primary Examiner:

Donald Mills

Int. Cl.
CPC ...
H04W 72/04 (2009.01); H04L 1/00 (2006.01); H04L 5/00 (2006.01); H04W 52/14 (2009.01); H04W 52/30 (2009.01); H04W 52/34 (2009.01); H04W 52/36 (2009.01); H04W 24/08 (2009.01); H04L 1/16 (2006.01); H04L 25/03 (2006.01); H04W 72/00 (2009.01);
U.S. Cl.
CPC ...
H04W 72/0453 (2013.01); H04L 1/0026 (2013.01); H04L 1/0038 (2013.01); H04L 1/0046 (2013.01); H04L 1/0061 (2013.01); H04L 1/0072 (2013.01); H04L 1/1657 (2013.01); H04L 5/001 (2013.01); H04L 5/0053 (2013.01); H04L 5/0055 (2013.01); H04L 5/0096 (2013.01); H04L 5/0098 (2013.01); H04L 25/03866 (2013.01); H04W 52/146 (2013.01); H04W 52/30 (2013.01); H04W 52/343 (2013.01); H04W 52/365 (2013.01); H04W 72/00 (2013.01); H04W 72/042 (2013.01); H04W 52/34 (2013.01); Y02B 60/50 (2013.01); H04L 5/0048 (2013.01); H04W 24/08 (2013.01);
Abstract

This invention relates to a proposal for power headroom reporting for uplink component carriers for which no uplink resource allocation is scheduled by the eNodeB. The user equipment (UE) calculates a virtual power headroom for the non-scheduled uplink component carrier, based on a virtual uplink resource assignment pre-configured by the UE and eNodeB. According to one embodiment the maximum transmit power of the UE is set to a pre-configured fixed value. Alternatively, the maximum transmit power is calculated by the UE considering the power reduction, while the uplink transmission power is set to zero. The virtual power headroom is then transmitted to the eNodeB, which in turn can infer therefrom the pathloss and/or power-per-resource-block for the non-scheduled uplink component carrier and may also infer the power reduction used by the UE. This allows a more accurate scheduling of future uplink transmissions on said non-scheduled uplink component carrier.

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