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:
Jul. 18, 2017

Filed:

Mar. 15, 2013
Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Joydeep Acharya, Sunnyvale, CA (US);

Long Gao, Santa Clara, CA;

Sudhanshu Gaur, Santa Clara, CA (US);

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 72/04 (2009.01); H04W 16/10 (2009.01); H04W 24/02 (2009.01); H04W 24/08 (2009.01); H04W 48/16 (2009.01); H04W 84/04 (2009.01);
U.S. Cl.
CPC ...
H04W 16/10 (2013.01); H04W 24/02 (2013.01); H04W 24/08 (2013.01); H04W 48/16 (2013.01); H04W 84/045 (2013.01);
Abstract

A communications system includes a macro base station, a plurality of UEs (user equipment), a plurality of small cells, and a network through which the macro base station, the UEs, and the small cells communicate with each other, the small cells within a macro coverage area of the macro base station. The macro base station comprises a processor, a memory, and a small cell on/off module which is operable, for each small cell of the plurality of small cells, to: determine an interference metric for the small cell; if the determined interference metric meets a preset condition for the small cell, then determine a loss in signal strength to the UEs associated with the small cell caused by switching off the small cell; and judge whether to switch off the small cell based on at least one of the determined interference metric or the determined loss in signal strength.


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