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1. (WO2019032034) SELECTIVE SYMBOL REPETITION FOR SFBC ON SPDCCH



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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/SE2018/050811 P72699WO1
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
10 August 2018 11 August 2017
Applicant
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
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: 1-7, 12-18, 22-29
Dividing a plurality of Resource Elements, REs, into multiple pluralities of RE groups, wherein each plurality of RE groups is associated with an antenna port, one or more RE groups of each plurality of RE groups comprise M REs, and at least one RE group of each plurality of RE groups comprises N1 REs, and groups of modulation symbols correspond to the RE groups; and for each plurality of RE groups, repeating a modulation symbol of a group of modulation symbols corresponding to the RE group of N1 REs (as defined in claim 1)
2. claims: 8-11, 19-21, 30, 31
Assuming that a predetermined number of Demodulation Reference Signal, DMRS, Resource Elements, REs, used for reception of a different physical channel than the control channel are present in each Orthogonal Frequency Division Multiplexing, OFDM, symbol carrying the control channel; and receiving control channel information in the REs of the OFDM symbol other than the assumed DMRS REs (as defined in claim 8), or identifying which Resource Elements, REs, within a symbol carrying the control channel contain control channel information and which REs contain a reference signal not used for reception of the control channel, according to when the reference signal is not present in the REs; and receiving control channel information carried in the control channel that indicates the presence of the reference signal in a set of Orthogonal Frequency Division Multiplexing, OFDM, symbols, the set of OFDM symbols containing the REs (as defined in claim 9)
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.: 1-7, 12-18, 22-29
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.     12    
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 1/06 (2006.01)i; H04L 1/00 (2006.01)i; H04L 1/08 (2006.01)n
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
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

C. DOCUMENTS CONSIDERED TO BE RELEVANT

Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
(1)
A
RENESAS ELECTRONICS EUROPE, "On the orphan RE issue in CSI-RS subframes", 3GPP DRAFT; R1-110186, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE,Vol. RAN WG1, No. Dublin, Ireland; 20110117, 11 January 2011 (2011-01-11),
XP050490112
1-7,12-18,22-29
section 2
(2)
A
QUALCOMM INC, "SFBC PDSCH transmission in CSI-RS subframes", 3GPP DRAFT; R1-104798 SFBC MAPPING, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE,Vol. RAN WG1, No. Madrid, Spain; 20100823, 17 August 2010 (2010-08-17),
XP050449990
1-7,12-18,22-29
section 3
(3)
X,P
ERICSSON, "Design aspects of sPDCCH", Vol. RAN WG1, No. Prague, Czech Republic; 20170821 - 20170825, 20 August 2017 (2017-08-20), 3GPP DRAFT; R1-1712895, 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/
XP051315705
[retrieved on  2017-08-20]
1-7,12-18,22-29
section 2.3
*
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
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:
12 November 2018
Date of mailing of the international search report:
21 January 2019
Authorized officer:
Stolte, Norbert
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