公开(公告)号：US10397867B2

公开(公告)日：2019-08-27

申请号：US15410882

申请日：2017-01-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chung-Ho Shin ,  Kyung-Hee Kim ,  Kyou-Woong Kim ,  Yun-Jin Kim

IPC: H04W4/80 ,  H04W8/00 ,  H04W52/02 ,  H04W76/14 ,  H04W88/06

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.

公开(公告)号：US09008656B2

公开(公告)日：2015-04-14

申请号：US13951890

申请日：2013-07-26

Applicant: Samsung Electronics Co. Ltd.

Inventor： Chung-Ho Shin ,  Chan-Young Kim ,  Byoung-Jae Bae ,  Jae-Ho Song ,  Woon-Haing Hur

IPC: H04W4/00 ,  H04W48/16

CPC classification number: H04W48/16

Abstract: A method and apparatus of searching for an operator network in a multi-Radio Access Technology (RAT) environment are provided. The method, calculating a length of a sleep interval to perform background Public Land Mobile Network (PLMN) searching, comparing the length of the sleep interval with a predetermined reference parameter, if the length of the sleep interval is larger than the reference parameter, performing background PLMN searching of a passive RAT during the sleep interval, and if the length of the sleep interval is equal to or smaller than the reference parameter, performing background PLMN searching of an active RAT during the sleep interval.

Abstract translation: 提供了一种在多无线电接入技术（RAT）环境中搜索运营商网络的方法和装置。 该方法，如果睡眠间隔的长度大于参考参数，则计算休眠间隔的长度以执行背景公共陆地移动网络（PLMN）搜索，将睡眠间隔的长度与预定参考参数进行比较，执行 在休眠间隔期间的无源RAT的背景PLMN搜索，并且如果睡眠间隔的长度等于或小于参考参数，则在睡眠间隔期间执行活动RAT的背景PLMN搜索。