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1. (WO2019063108) SYSTEM FOR NON-TERRESTRIAL COMMUNICATIONS



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INTERNATIONAL SEARCH REPORT (ISR)
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/EP2017/077320 FH171015PCT
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
25 October 2017 29 September 2017
Applicant
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER
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)).
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)).
c.
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
This International Searching Authority found multiple inventions in this international application, as follows:
1. claims: 1-5, 18-22, 34, 35
Terrestrial relay node receives ACK/NACK feedback corresponding to direct communication.
2. claims: 6-17
terrestrial relay node handling retransmissions of data packets transmitted over a direct link.
3. claims: 23-33
buffering of redundancy versions at transmitting non-terrestrial node and relaying terrestrial node according to congestion levels.
4. claims: 36, 37
retransmission at the terrestrial relay in response to CQI of non-terrestrial channel below a threshold.
5. claims: 38-42
using parallel resources for retransmission to a satellite.
1.
As all required additional search fees were timely paid by the applicant, this international search report covers all searchable claims.
2.
As all searchable claims could be searched without effort justifying additional fees, this Authority did not invite payment of additional fees.
3.
As only some of the required additional search fees were timely paid by the applicant, this international search report covers only those claims for which fees were paid, specifically claims Nos.:
4.
No required additional search fees were timely paid by the applicant. Consequently, this international search report is restricted to the invention first mentioned in the claims; it is covered by claims Nos.:
Remark on Protest
The additional search fees were accompanied by the applicant’s protest and, where applicable, the payment of a protest fee.
The additional search fees were accompanied by the applicant’s protest but the applicable protest fee was not paid within the time limit specified in the invitation.
No protest accompanied the payment of additional search fees.
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
a.
The figure of the drawings to be published with the abstract is Figure No.     2    
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.
b.
none of the figures is to be published with the abstract.

A. CLASSIFICATION OF SUBJECT MATTER

     H04L 1/18 (2006.01)i; H04B 7/155 (2006.01)i; H04L 1/00 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC

B. FIELDS SEARCHED

Minimum documentation searched (classification system followed by classification symbols):
     H04L; H04B
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
EPO-Internal, WPI Data

C. DOCUMENTS CONSIDERED TO BE RELEVANT

Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
(1)
Y
GUIDOTTI A ET AL, "Satellite-enabled LTE systems in LEO constellations", 2017 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS), IEEE,21 May 2017 (2017-05-21), page 876-881,
XP033111607
1-7,9,10,16-24,26,27,29,34,35,38-42
A
section II, A. Option A: SAT-RN, par. 1
36,37
section III, B. Doppler, par. 2
section III, A. Delay
section IV, E, HARQ retransmissions;figure Fig. 1
(2)
Y
RESEARCH IN MOTION UK LIMITED, "Performance Analysis and DL/UL Transmission Schemes for Type-II Relay", 3GPP DRAFT; R1-094466(RIM-PERFORMANCE ANALYSIS TYPE2_TXRX), 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE,Vol. RAN WG1, No. Jeju, Korea; 20091109 - 20091113, 03 November 2009 (2009-11-03),
XP050597825
1-5,18-22,34,35
section 2.2
figure 2
(3)
Y
THALES ET AL, "Non-Terrestrial Networks: Considerations on NR impacts", Vol. RAN WG1, No. Prague, Czech Republic; 20170821 - 20170825, 20 August 2017 (2017-08-20), 3GPP DRAFT; R1-1714477_NR IMPACTS, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE
Retrieved from the Internet:
URL:http://www.3gpp.org/ftp/Meetings_3GPP_SYNC/RAN1/Docs/
XP051317254
[retrieved on  2017-08-20]
6,7,9,10,16,17
A
page 8, box 3
8,11-15
page 10, box 2
page 11, box 1
(4)
X
EP 2159976 A1 (FUJITSU LTD [JP]) 03 March 2010 (2010-03-03)
28,32,33
Y
A
paragraphs [0007], [0037], [0038]
23,24,26,27,29
25,30,31
(5)
A
US 2014171082 A1 (SMADI MOHAMMED NAWAF [CA] ET AL) 19 June 2014 (2014-06-19)
36,37
abstract
paragraph [0013] - paragraph [0014]
(6)
Y
US 2010099352 A1 (LEE HYO-JIN [KR] ET AL) 22 April 2010 (2010-04-22)
38-42
paragraph [0051] - paragraph [0052]
figure 4
*
Special categories of cited documents:
"A"
document defining the general state of the art which is not considered to be of particular relevance
"E"
earlier application or patent but published on or after the international filing date
"L"
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)
"O"
document referring to an oral disclosure, use, exhibition or other means
"P"
document published prior to the international filing date but later than the priority date claimed
"T"
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
"X"
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
"Y"
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

D. INFORMATION ON PATENT FAMILY MEMBERS

Patent document cited in search report Publication date
(day/month/year)
Patent family member(s) Publication date
(day/month/year)
EP 2159976 A1
03 March 2010
EP 2159976 A1
JP 4930588 B2
JP WO2008142736 A1
US 2010067430 A1
WO 2008142736 A1
03 March 2010
16 May 2012
05 August 2010
18 March 2010
27 November 2008
US 2014171082 A1
19 June 2014
CA 2751801 A1
EP 2448328 A1
EP 2547170 A1
US 2012099562 A1
US 2014171082 A1
26 April 2012
02 May 2012
16 January 2013
26 April 2012
19 June 2014
US 2010099352 A1
22 April 2010
KR 20080029421 A
US 2010099352 A1
WO 2008038895 A2
03 April 2008
22 April 2010
03 April 2008
Name and mailing address of the ISA/:
European Patent Office
P.B. 5818, Patentlaan 2, 2280 HV Rijswijk,
Netherlands
Telephone No. (+31-70)340-2040
Facsimile No. (+31-70)340-3016
Date of the actual completion of the international search:
02 October 2018
Date of mailing of the international search report:
11 October 2018
Authorized officer:
Ivanov, Tzvetan
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