公开(公告)号：US20170280285A1

公开(公告)日：2017-09-28

申请号：US15506835

申请日：2014-11-27

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： XUN FEI ,  DA-JUN CHEN ,  WEN FENG ,  YA-HUI GONG ,  YONG TIAN

IPC: H04W4/02 ,  H04W64/00 ,  H04W4/04 ,  G01S5/10

CPC classification number: H04W4/021 ,  G01S5/10 ,  G06F2221/2111 ,  H04W4/04 ,  H04W4/40 ,  H04W64/00 ,  H04W64/003

Abstract: A communication device receives coordinates for an inner area and an outer area associated with a geo-fence. The communication device determines its current location coordinate and determines how the current location coordinate relates to the coordinates for the inner area and the outer area. The communication device discovers, using the current location coordinate and the coordinates for the inner area and the outer area, that the communication device is located outside of the inner area and inside of the outer area. Responsive to the discovering, the communication device sends a query to a network equipment to determine the current location of the communication device relative to the geo-fence. The communication device receives information associated with an intermediate area and uses the information associated with the intermediate area to determine the current location of the communication device relative to the geo-fence.