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:
Aug. 29, 2017

Filed:

Jun. 20, 2016
Applicant:

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

Inventors:

Joachim Löhr, Wiesbaden, DE;

Christian Wengerter, Kleinheubach, DE;

Martin Feuersänger, Bremen, DE;

Takashi Tamura, Kanagawa, JP;

Hidetoshi Suzuki, Kanagawa, JP;

Takahisa Aoyama, Kanagawa, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 36/30 (2009.01); H04W 72/04 (2009.01); H04W 56/00 (2009.01); H04W 36/04 (2009.01);
U.S. Cl.
CPC ...
H04W 36/30 (2013.01); H04W 36/04 (2013.01); H04W 56/0045 (2013.01); H04W 72/0446 (2013.01);
Abstract

The invention relates methods for time aligning uplink transmissions by a mobile terminal in a mobile communication system, and to methods for performing a handover of a mobile terminal to a target aggregation access point. The invention is also providing apparatus and system for performing these methods, and computer readable media the instructions of which cause the apparatus and system to perform the methods described herein. In order to allow for aligning the timing of uplink transmissions on uplink component carriers, where different propagation delays are imposed on the transmissions on the uplink component carriers, the inventions suggests to time align the uplink component carriers based on a reference time alignment of a reference cell and a reception time difference or propagation delay difference between the downlink transmissions in the reference cell and the other radio cells, the uplink component carriers of which need to be time aligned.


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