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:
Jan. 17, 2017

Filed:

Dec. 07, 2015
Applicant:

Institute for Information Industry, Taipei, TW;

Inventors:

Chih-Hsiang Ho, Taipei, TW;

Yi-Chih Tung, Taipei, TW;

Pang-Fu Liu, New Taipei, TW;

Hao-Gen Wong, Taoyuan, TW;

Li-Sheng Chen, Yilan, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 36/00 (2009.01); H04W 36/32 (2009.01); H04W 64/00 (2009.01); H04L 12/26 (2006.01); H04W 36/08 (2009.01); H04W 36/30 (2009.01); H04B 17/318 (2015.01);
U.S. Cl.
CPC ...
H04W 36/32 (2013.01); H04B 17/318 (2015.01); H04L 43/0811 (2013.01); H04W 36/08 (2013.01); H04W 36/30 (2013.01); H04W 64/00 (2013.01);
Abstract

A coverage hole detection apparatus and method are provided. The coverage hole detection apparatus decides two boundary locations of a coverage hole according to (a) a time length from a time point when a user equipment (UE) has detected a disconnection from a first base station to a time point when the UE determines that a Radio Link Failure (RLF) has happened, (b) a time length from a time point when the UE receives an RLF report request from a second base station to a time point when the UE transmits an RLF report response to the second base station, (c) a location that the UE determines that the RLF has happened, and (d) a location where the UE transmits the RLF report response. The coverage hole detection apparatus decides the coverage hole according to the two boundary locations and a sensitivity range of the UE.


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