Please wait...



Goto Application


Disclaimer The image version (PDF) available on PATENTSCOPE is the official version. This online html version is provided to assist users. Despite the great care taken in its compilation to ensure a precise and accurate representation of the data appearing on the printed document/images, errors and/or omissions cannot be excluded due to the data transmittal, conversion and inherent limitations of the (optional) machine translation processes used. Hyperlinks followed by this symbol , are to external resources that are not controlled by WIPO. WIPO disclaims all liability regarding the above points.

Part 1:  1  2  3  4  5  6          Part 2:  A  B  C  D  E 
International application No. Applicant's or agent's file reference
PCT/KR2019/017058 P24704-PCT
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
05 December 2019 05 December 2018
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.
6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     6    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
none of the figures is to be published with the abstract.


     H04W 36/30 (2009.01)i; H04W 36/00 (2009.01)i; H04W 36/32 (2009.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
한국등록실용신안공보 및 한국공개실용신안공보: 조사된 최소문헌란에 기재된 IPC
일본등록실용신안공보 및 일본공개실용신안공보: 조사된 최소문헌란에 기재된 IPC
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
eKOMPASS(KIPO internal) & keywords: LADN (local area data network), service, AMF (access & mobility function), prioritize, select, cell, neighbor cell, strength, quality, threshold, TAC (tracking area code)


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2018-0279397 A1 (QUALCOMM INCORPORATED) 27 September 2018 paragraphs [0105]-[0117]; and figure 14
US 2015-0105078 A1 (APPLE INC.) 16 April 2015 paragraphs [0036]-[0037]; and figure 5
WO 2018-038490 A1 (SAMSUNG ELECTRONICS CO., LTD.) 01 March 2018 paragraphs [0180]-[0224]; and figure 10
US 2014-0128058 A1 (HUAWEI TECHNOLOGIES CO., LTD.) 08 May 2014 paragraphs [0081]-[0101]; and figure 4
ERICSSON, ’Service area restrictions applicable for PLMNs in registration area’, C1-188520, 3GPP TSG-CT WG1 Meeting #113, 03 December 2018 section
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
document cited by the applicant in the international application
earlier application or patent but published on or after the international filing date
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
document referring to an oral disclosure, use, exhibition or other means
document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
document member of the same patent family


Patent document cited in search report Publication date
Patent family member(s) Publication date
US 2018-0279397 A1
27 September 2018
CN 110476475 A
EP 3603314 A1
TW 201841537 A
WO 2018-183085 A1
19 November 2019
05 February 2020
16 November 2018
04 October 2018
US 2015-0105078 A1
16 April 2015
BR PI1100256 A2
CN 100495153 C
CN 100584702 A
EP 2362696 A1
JP 2011-205618 A
JP 2014-060727 A
JP 2016-007056 A
JP 5801366 B2
KR 10-1710747 B1
KR 10-2011-0097702 A
KR 10-2013-0093060 A
RU 2011106370 A
RU 449 C2
RU 449 C9
US 2011-0207459 A1
US 8838106 B2
US 9661531 B2
15 January 2013
03 June 2009
23 February 2005
31 August 2011
13 October 2011
03 April 2014
14 January 2016
28 October 2015
27 February 2017
31 August 2011
21 August 2013
27 August 2012
10 March 2014
20 September 2014
25 August 2011
16 September 2014
23 May 2017
WO 2018-038490 A1
01 March 2018
CN 109644516 A
EP 3490333 A1
KR 10-2018-0021636 A
US 2019-0182788 A1
16 April 2019
29 May 2019
05 March 2018
13 June 2019
US 2014-0128058 A1
08 May 2014
CN 102883361 A
CN 102883361 B
EP 2720487 A1
EP 2720487 A4
JP 2014-524201 A
JP 5869117 B2
US 9560536 B2
WO 2013-010464 A1
16 January 2013
06 April 2016
16 April 2014
19 November 2014
18 September 2014
24 February 2016
31 January 2017
24 January 2013
Name and mailing address of the ISA/:
Korean Intellectual Property Office
189 Cheongsa-ro, Seo-gu, Daejeon Metropolitan City, 302-701
Republic of Korea
Facsimile No. +82-42-481-8578
Date of the actual completion of the international search:
11 March 2020
Date of mailing of the international search report:
12 March 2020
Authorized officer:
YANG, Jeong Rok
Telephone No. +82-42-481-5709
Top    Part 1: 1 2 3 4 5 6         Part 2: A B C D E