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. 27, 2019

Filed:

Jan. 20, 2017
Applicant:

Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;

Inventors:

Chung-Ho Shin, Hwaseong-si, KR;

Kyung-Hee Kim, Suwon-si, KR;

Kyou-Woong Kim, Seongnam-si, KR;

Yun-Jin Kim, Hwaseong-si, KR;

Assignee:

SAMSUNG ELECTRONICS CO., LTD., Suwon-si, Gyeonggi-Do, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/80 (2018.01); H04W 8/00 (2009.01); H04W 52/02 (2009.01); H04W 76/14 (2018.01); H04W 88/06 (2009.01);
U.S. Cl.
CPC ...
H04W 52/0216 (2013.01); H04W 4/80 (2018.02); H04W 8/005 (2013.01); H04W 52/0229 (2013.01); H04W 76/14 (2018.02); H04W 88/06 (2013.01); Y02D 70/00 (2018.01); Y02D 70/10 (2018.01); Y02D 70/1242 (2018.01); Y02D 70/1262 (2018.01); Y02D 70/14 (2018.01); Y02D 70/144 (2018.01); Y02D 70/164 (2018.01); Y02D 70/168 (2018.01); Y02D 70/20 (2018.01); Y02D 70/21 (2018.01);
Abstract

A method of operating a user equipment includes setting a user equipment to enter a public safety mode, converting the user equipment to an idle state when the user equipment enters the public safety mode, and temporarily converting the user equipment from the idle state to a partial wakeup state during the public safety mode. A public safety carrier searching is performed for device-to-device (D2D) communication between the user equipment and a neighboring equipment during the partial wakeup state. The method may efficiently support the D2D communication and reduce power consumption by changing the state of the user equipment into the idle state when entering the public safety mode and temporarily changing the user equipment into the partial wakeup state for public safety carrier searching.


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