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:
Jun. 20, 2017

Filed:

Feb. 02, 2015
Applicant:

Electronics and Telecommunications Research Institute, Daejeon, KR;

Inventors:

Kyung Sook Kim, Daejeon, KR;

Sang Chul Oh, Daejeon, KR;

Young Jick Bahg, Daejeon, KR;

Yeon Seung Shin, Daejeon, KR;

Pyeong Jung Song, Daejeon, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 56/00 (2009.01); H04W 28/02 (2009.01); H04W 24/02 (2009.01); H04L 5/00 (2006.01); H04W 16/32 (2009.01); H04W 92/20 (2009.01); H04W 72/04 (2009.01);
U.S. Cl.
CPC ...
H04W 28/0236 (2013.01); H04W 24/02 (2013.01); H04L 5/001 (2013.01); H04L 5/0032 (2013.01); H04L 5/0098 (2013.01); H04W 16/32 (2013.01); H04W 72/042 (2013.01); H04W 92/20 (2013.01);
Abstract

According to an exemplary embodiment of the present invention, a master base station selects a target serving cell in which a state is changed, among the serving cells of at least one slave base station set in the terminal, generates a MAC control element which instructs a state change of the target serving cell, and then directly transmits the MAC control element to the terminal in the case of an uplink asynchronous state between the target slave base station managing the target serving cell and the terminal.


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