`
`
`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`
`
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`
`
`Ericsson Inc.
`
`Petitioner
`
`v.
`
`Electronics and Telecommunications Research Institute
`
`Patent Owner
`
`
`Patent No. 9,204,438 B2
`Filing Date: April 27, 2015
`Issue Date: December 1, 2015
`
`Title: GENERATING DOWNLINK FRAME AND SEARCHING FOR CELL
`
`Inter Partes Review No. IPR2019-00239
`
`
`PETITION FOR INTER PARTES REVIEW
`UNDER 35 U.S.C. §§ 311-319 AND 37 C.F.R. § 42.100 ET SEQ.
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`

`

`Table of Contents
`
`I.
`
`II.
`
`Preliminary Statement .................................................................................. 1
`
`Identification of Challenge and Relief Requested ...................................... 2
`
`III. Technological Background ........................................................................... 3
`
`A.
`
`B.
`
`Synchronization Signals in Wireless Networks .................................... 3
`
`Standardization of Synchronization Signals and Frame
`Structure in LTE .................................................................................... 6
`
`C.
`
`The ’438 Patent ...................................................................................10
`
`1.
`
`2.
`
`3.
`
`Prosecution History ...................................................................10
`
`Alleged Problem Addressed by ’438 Patent .............................11
`
`The ’438 Patent’s Solution ........................................................11
`
`Challenged Claims ..............................................................................11
`
`Level of Ordinary Skill .......................................................................11
`
`Claim Construction..............................................................................12
`
`Claimed Priority Date ..........................................................................14
`
`D.
`
`E.
`
`F.
`
`G.
`
`IV. The Challenged Claims are not Entitled to their Claimed Priority
`Dates ..............................................................................................................14
`
`A.
`
`Legal Standard for Priority ..................................................................14
`
`1.
`
`2.
`
`3.
`
`Patent Owner Must Prove Entitlement to an Earlier
`Priority Date ..............................................................................14
`
`Patent Owner must Prove § 112 ¶1 support for its claims
`in the priority application ..........................................................15
`
`112 ¶1 requires both a written description of the claimed
`invention and a disclosure that enables a POSITA to
`make and use the claimed invention .........................................15
`
`i
`
`

`

`B.
`
`The Challenged Claims are not Entitled to Either 2007 Priority
`Date ......................................................................................................18
`
`1.
`
`2.
`
`3.
`
`The ’837 and ’915 Applications fail to provide § 112 ¶1
`Support for “the [] scrambling sequence is determined
`based on a remainder of dividing an index of the [] short
`sequence by 8” ..........................................................................18
`
`The ’837 and ’915 Applications. fail to provide § 112 ¶1
`Support for “the [first/second] secondary synchronization
`signal comprises a first short sequence and a second short
`sequence, the [first/second] short sequence is scrambled
`with a first scrambling sequence, and the [second/first]
`short sequence is scrambled with a second scrambling
`sequence and a [third/fourth] scrambling sequence” ................21
`
`The ’837 and ’915 Applications fail to provide § 112 ¶1
`Support for “transmitting the downlink frame through a
`transmission antenna” ...............................................................30
`
`C.
`
`The Challenged Claims are not Entitled to The ’272
`Application’s Priority Date .................................................................31
`
`1.
`
`The ’272 Application fails to provide § 112 ¶1 Support
`for “the [first/second] secondary synchronization signal
`comprises a first short sequence and a second short
`sequence, the [first/second] short sequence is scrambled
`with a first scrambling sequence, and the [second/first]
`short sequence is scrambled with a second scrambling
`sequence and a [third/fourth] scrambling sequence” ................31
`
`V.
`
`Prior Art .......................................................................................................32
`
`A.
`
`B.
`
`C.
`
`D.
`
`E.
`
`36.211 v8.2.0 .......................................................................................32
`
`36.211 v8.1.0 .......................................................................................33
`
`R1-074498 ...........................................................................................33
`
`36.211 v8.0.0 .......................................................................................34
`
`R1-073172 ...........................................................................................34
`
`ii
`
`

`

`F.
`
`G.
`
`H.
`
`I.
`
`49b v010 Meeting Summary ...............................................................35
`
`R1-071794 ...........................................................................................35
`
`R1-071584 ...........................................................................................35
`
`R1-072837 ...........................................................................................36
`
`VI. Claims 15-18 are Unpatentable ..................................................................36
`
`A. Ground #1: 36.211 v8.2.0 Anticipates Claims 15-18 and/or
`Renders Them Obvious .......................................................................36
`
`1.
`
`A POSITA would Understand 36.211 v8.2.0 to Anticipate
`Claim 15 and/or Render it Obvious ..........................................37
`
`a.
`
`b.
`
`c.
`
`d.
`
`e.
`
`[15pre] A method of generating a downlink frame
`in a wireless communication system, the method
`comprising: .....................................................................37
`
`[15a.] generating a downlink frame including a
`primary synchronization signal, a first secondary
`synchronization signal and a second secondary
`synchronization signal; and ............................................40
`
`[15b.] including cell identity group information in
`each of the first and second secondary
`synchronization signals and including cell identity
`information within a cell identity group in the
`primary synchronization signal so that a terminal
`searches for a cell using the cell identity group
`information and the cell identity information; ...............41
`
`[15c.] wherein the cell identity group information
`is identified using at least one of the first
`secondary synchronization signal and the second
`secondary synchronization signal, and the cell
`identity information is identified using the primary
`synchronization signal ....................................................45
`
`[15d] wherein the first secondary synchronization
`signal comprises a first short sequence and a
`second short sequence, the first short sequence is
`
`iii
`
`

`

`f.
`
`g.
`
`scrambled with a first scrambling sequence, and
`the second short sequence is scrambled with a
`second scrambling sequence and a third
`scrambling sequence .......................................................45
`
`[15e] wherein the second secondary
`synchronization signal comprises the first short
`sequence and the second short sequence, the
`second short sequence is scrambled with the first
`scrambling sequence, and the first short sequence
`is scrambled with the second scrambling sequence
`and a fourth scrambling sequence, and ...........................46
`
`[15f] wherein the first scrambling sequence and
`the second scrambling sequence are determined
`based on the cell identity information contained in
`the primary synchronization signal, the third
`scrambling sequence is determined based on a
`remainder of dividing an index of the first short
`sequence by 8, and the fourth scrambling sequence
`is determined based on a remainder of dividing an
`index of the second short sequence by 8; and ................48
`
`h.
`
`[15g] transmitting the downlink frame through a
`transmission antenna .......................................................51
`
`2.
`
`A POSITA would Understand 36.211 v8.2.0 to Anticipate
`Claim 16 and Render it Obvious ...............................................52
`
`a.
`
`b.
`
`[16pre] The method of claim 15 .....................................52
`
`[16a] wherein the first short sequence scrambled
`with the first scrambling sequence and the second
`short sequence scrambled with the second
`scrambling sequence and the third scrambling
`sequence in the first secondary synchronization
`signal are alternately disposed on a plurality of
`sub-carriers, and the second short sequence
`scrambled with the first scrambling sequence and
`the first short sequence scrambled with the second
`scrambling sequence and a fourth scrambling
`
`iv
`
`

`

`sequence in the second secondary synchronization
`signal are alternately disposed on a plurality of
`sub-carriers .....................................................................52
`
`3.
`
`A POSITA would Understand 36.211 v8.2.0 to Anticipate
`Claim 17 and Render it Obvious ...............................................53
`
`a.
`
`b.
`
`[17pre] The method of claim 15 .....................................53
`
`[17a] wherein the first scrambling sequence is
`different from the second scrambling sequence. ............53
`
`4.
`
`A POSITA would Understand 36.211 v8.2.0 to Anticipate
`Claim 18 and Render it Obvious ...............................................53
`
`a.
`
`b.
`
`c.
`
`d.
`
`[18pre] The method of claim 15 .....................................53
`
`[18a] wherein the downlink frame includes a
`plurality of slots, each slot having a plurality of
`symbols ...........................................................................54
`
`[18b] wherein the primary synchronization signal
`is located on a last symbol of a first slot and the
`first secondary synchronization signal is located on
`a symbol right ahead of the last symbol of the first
`slot, and ...........................................................................55
`
`[18c] the primary synchronization signal is located
`on a last symbol of a second slot and the second
`secondary synchronization signal is located on a
`symbol right ahead of the last symbol of the
`second slot ......................................................................57
`
`B. Ground #2: 36.211 v8.1.0 Anticipates Claims 15-18 and
`Renders Them Obvious .......................................................................57
`
`1.
`
`A POSITA would Understand 36.211 v8.1.0 to Anticipate
`Claim 15 and Render it Obvious ...............................................57
`
`a.
`
`b.
`
`[15pre]: ...........................................................................57
`
`[15a.] ...............................................................................58
`
`v
`
`

`

`c.
`
`d.
`
`e.
`
`f.
`
`g.
`
`h.
`
`[15b.] ...............................................................................58
`
`[15c.] ...............................................................................58
`
`[15d] ................................................................................59
`
`[15e] ................................................................................59
`
`[15f] ................................................................................59
`
`[15g] ................................................................................61
`
`2.
`
`A POSITA would Understand 36.211 v8.1.0 to Anticipate
`Claim 16 and Render it Obvious ...............................................61
`
`a.
`
`b.
`
`[16pre] .............................................................................61
`
`[16a] ................................................................................61
`
`3.
`
`A POSITA would Understand 36.211 v8.1.0 to Anticipate
`Claim 17 and Render it Obvious ...............................................62
`
`a.
`
`b.
`
`[17pre] .............................................................................62
`
`[17a] ................................................................................62
`
`4.
`
`A POSITA would Understand 36.211 v8.1.0 to Anticipate
`Claim 18 and Render it Obvious ...............................................62
`
`a.
`
`b.
`
`c.
`
`d.
`
`[18pre] .............................................................................62
`
`[18a] ................................................................................62
`
`[18b] ................................................................................63
`
`[18c] ................................................................................64
`
`C. Ground #3: 36.211 v8.0.0 Modified by R1-074498 Renders
`Claims 15-18 Obvious .........................................................................64
`
`1.
`
`36.211 v8.0.0 Modified by R1-074498 Renders Claim 15
`Obvious .....................................................................................65
`
`a.
`
`[15pre] .............................................................................65
`
`vi
`
`

`

`b.
`
`c.
`
`d.
`
`e.
`
`f.
`
`g.
`
`h.
`
`[15a.] ...............................................................................66
`
`[15b.] ...............................................................................66
`
`[15c.] ...............................................................................68
`
`[15d] ................................................................................68
`
`[15e] ................................................................................69
`
`[15f] ................................................................................70
`
`[15g] ................................................................................72
`
`2.
`
`36.211 v8.0.0 Modified by R1-074498 Renders Claim 16
`Obvious .....................................................................................72
`
`a.
`
`b.
`
`[16pre] .............................................................................72
`
`[16a] ................................................................................72
`
`3.
`
`36.211 v8.0.0 Modified by R1-074498 Renders Claim 17
`Obvious .....................................................................................73
`
`a.
`
`b.
`
`[17pre] .............................................................................73
`
`[17a] ................................................................................73
`
`4.
`
`36.211 v8.0.0 Modified by R1-074498 Renders Claim 18
`Obvious .....................................................................................73
`
`a.
`
`b.
`
`c.
`
`d.
`
`[18pre] .............................................................................73
`
`[18a] ................................................................................73
`
`[18b] ................................................................................74
`
`[18c] ................................................................................74
`
`D. Ground #4: R1-073172 Modified by 49b v010, R1-071794, R1-
`071584, and R1-072837 Renders Claims 15-18 Obvious ...................74
`
`1.
`
`R1-073172 Modified by 49b v010, R1-071794, and R1-
`071584 Renders Claim 15 Obvious ..........................................76
`
`vii
`
`

`

`a.
`
`b.
`
`c.
`
`d.
`
`e.
`
`f.
`
`g.
`
`h.
`
`[15pre]: ...........................................................................76
`
`[15a.] ...............................................................................77
`
`[15b.] ...............................................................................77
`
`[15c.] ...............................................................................78
`
`[15d] ................................................................................78
`
`[15e] ................................................................................79
`
`[15f] ................................................................................80
`
`[15g] ................................................................................83
`
`2.
`
`R1-073172 Modified by 49b v010, R1-071794, and R1-
`071584 Renders Claim 16 Obvious ..........................................83
`
`a.
`
`b.
`
`[16pre] .............................................................................83
`
`[16a] ................................................................................83
`
`3.
`
`R1-073172 Modified by 49b v010, R1-071794, R1-
`071584, and R1-072837 Renders Claim 17 Obvious ...............84
`
`a.
`
`b.
`
`[17pre] .............................................................................84
`
`[17a] ................................................................................84
`
`4.
`
`R1-073172 Modified by 49b v010, R1-071794, and R1-
`071584 Renders Claim 18 Obvious ..........................................84
`
`a.
`
`b.
`
`c.
`
`d.
`
`[18pre] .............................................................................84
`
`[18a] ................................................................................85
`
`[18b] ................................................................................85
`
`[18c] ................................................................................85
`
`VII. Review of the Challenged Claims Should Be Instituted ..........................85
`
`VIII. Conclusion ....................................................................................................86
`
`viii
`
`

`

`IX. Mandatory Notices Under 37 C.F.R. §42.8 ...............................................87
`
`A.
`
`B.
`
`C.
`
`D.
`
`Real Parties-In-Interest ........................................................................87
`
`Related Matters ....................................................................................87
`
`Lead and Back-Up Counsel .................................................................87
`
`Service Information .............................................................................88
`
`X. Certification Under 37 C.F.R. §42.24(d) ...................................................88
`
`XI. Payment of Fees ...........................................................................................88
`
`XII. Time for Filing Petition ...............................................................................88
`
`XIII. Grounds for Standing ..................................................................................89
`
`
`
`
`
`
`
`
`ix
`
`

`

`Petitioner’s Exhibit List
`
`Exhibit No.
`
`Description
`
`EX-1001
`
`EX-1002
`
`EX-1003
`
`EX-1004
`EX-1005
`
`EX-1006
`EX-1007
`
`EX-1008
`
`EX-1009
`
`EX-1010
`
`EX-1011
`
`U.S. Patent No. 9,204,438 (“the ’438 Patent”)
`
`File History of U.S. Patent No. 9,204,438 (U.S. Patent
`Application No. 14/697,146 (“the ’146 Application”))
`The certified translation of Korean Provisional Patent
`Application No. 10-2007-0072837 (“the ’837 Application”),
`and supporting translator declaration
`Korean Provisional Patent Application No. 10-2007-0072837
`The certified translation of Korean Provisional Patent
`Application No. 10-2007-0083915 (“the ’915 Application”)
`and supporting translator declaration
`Korean Provisional Patent Application No. 10-2007-0083915
`U.S. Patent Application No. 12/488,272 (“the ’272
`Application”)
`3rd Generation Partnership Project; Technical Specification
`Group Radio Access Network; Evolved Universal Terrestrial
`Radio Access (E-UTRA); Physical Channels and Modulation
`(Release 8), 3GPP TS 36.211 v8.9.0 (2009-12) (“36.211
`v8.9.0” or “v8.9.0” or “Accused Standard”)
`3rd Generation Partnership Project; Technical Specification
`Group Radio Access Network; Evolved Universal Terrestrial
`Radio Access (E-UTRA); Physical Channels and Modulation
`(Release 8), 3GPP TS 36.211 v8.2.0 (2008-03) (“36.211
`v8.2.0” or “v8.2.0”)
`3rd Generation Partnership Project; Technical Specification
`Group Radio Access Network; Evolved Universal Terrestrial
`Radio Access (E-UTRA); Physical Channels and Modulation
`(Release 8), 3GPP TS 36.211 v8.1.0 (2007-11) (“36.211
`v8.1.0” or “v8.1.0”)
`3rd Generation Partnership Project; Technical Specification
`Group Radio Access Network; Evolved Universal Terrestrial
`Radio Access (E-UTRA); Physical Channels and Modulation
`(Release 8), 3GPP TS 36.211 v8.0.0 (2007-09) (“36.211
`v8.0.0” or “v8.0.0”)
`
`x
`
`

`

`Exhibit No.
`
`EX-1012
`
`EX-1013
`
`EX-1014
`
`EX-1015
`EX-1016
`
`EX-1017
`
`EX-1018
`
`EX-1019
`
`EX-1020
`
`EX-1021
`
`Description
`
`3rd Generation Partnership Project; Technical Specification
`Group Radio Access Network; Evolved Universal Terrestrial
`Radio Access (E-UTRA); Physical Channels and Modulation
`(Release 8), 3GPP TS 36.211 v1.2.0 (2007-06) (“R1-
`073172”)
`3rd Generation Partnership Project; Technical Specification
`Group Radio Access Network; Evolved Universal Terrestrial
`Radio Access (E-UTRA); Physical Channels and Modulation
`(Release 8), 3GPP TS 36.211 v1.1.0 (2007-05) (“R1-
`072663”)
`Draft Report of 3GPP TSG RAN WG1 #49b v0.1.0 (“49b
`v010”)
`Listserve record of July 5, 2007 e-mail attaching 49b v010
`Qualcomm Japan et al., “Way Forward for Stage 2.5 Details
`of SCH,” 3GPP TSG RAN WG1 Meeting #48-bis in St.
`Julian’s, Malta, March 26-30, 2007, R1-071794 (“R1-
`071794”)
`Ericsson, “Secondary Synchronization Signal Design,” 3GPP
`TSG RAN WG1 Meeting #48-bis in St. Julian’s, Malta,
`March 26-30, 2007, R1-071584 (“R1-071584”)
`Texas Instruments, “Secondary SCH Design and
`Performance,” 3GPP TSG RAN WG1 Meeting #49-bis in
`Orlando, Florida, June 25-29, 2007, R1-072837, (“R1-
`072837”)
`Texas Instruments, et al., “Way Forward for Secondary SCH
`Mapping and Scrambling,” 3GPP TSG RAN WG1 Meeting
`#50-bis in Shanghai, China, October 8-12, 2007, R1-074498
`(“R1-074498”)
`MCC Support, “Approved Report of 3GPP TSG RAN WG1
`#46bis,” 3GPP TSG RAN WG1 Meeting #47 in Riga, Latvia,
`November 6-10, 2006, R1-063613 (“R1-063613”)
`Nokia, et al., “Outcome of cell search drafting session,” 3GPP
`TSG RAN WG1 Meeting #46bis in Seoul, South Korea,
`October 9-13, 2006, R1-062290 (“R1-062290”)
`
`xi
`
`

`

`Exhibit No.
`
`EX-1022
`
`EX-1023
`
`EX-1024
`
`EX-1025
`
`EX-1026
`
`EX-1027
`EX-1028
`
`EX-1029
`
`EX-1030
`
`EX-1031
`
`EX-1032
`EX-1033
`
`EX-1100
`
`EX-1200
`EX-1201
`
`Description
`
`MCC Support, “Approved Report of 3GPPTSG RAN WG1
`#48 v0.2.0 (St. Louis, USA 12-16 February, 2007),” 3GPP
`TSG RAN WG1 Meeting #48-bis in St. Julian’s, Malta,
`March 26-30, 2007, R1-071768 (“R1-071768”)
`MCC Support, “Draft Report of 3GPP TSG RAN WG1 #48b
`v0.3.0 (St. Julian, Malta, 26 – 30 March, 2007),” 3GPP TSG
`RAN WG1 Meeting #49, Kobe, Japan, May 7-11, 2007, R1-
`72001 (“R1-72001”)
`Complaint filed December 3, 2018 in Sol IP, LLC v. AT&T
`Mobility LLC, Civil Action No. 2:18-cv-00526 (E.D. Tex.).
`Sol IP’s First Amended Infringement Disclosure, dated March
`22, 2019
`Sol IP’s Opening Claim Construction Brief Regarding LTE
`Patents Group B (D.I. 206)
`Rebuttal Declaration of Dr. Jonathan Wells
`“LTE Overview,” available at
`http://www.3gpp.org/technologies/keywords-acronyms/98-lte
`
`Bahl, Sanat Kamal, “Cell Searching in WCDMA,” published
`in April/May 2003 issue of IEEE Potentials, pp. 16-19
`
`MCC Support, “Report of 3GPP TSG RAN WG1 #50bis,”
`3GPP TSG RAN WG1 Meeting #51 in Jeju, South Korea,
`November 5-11, 2007, R1-075054 (“R1-075054”)
`LTE II and WI-FI PATENTS – PRELIMINARY
`CONSTRUCTIONS from Sol IP LLC v AT&T Mobility LLC,
`2:18-cv-00526-RWS-RSP, December 5, 2019.
`
`Declaration of Dr. Jonathan Wells
`Correspondence from Susman Godfrey regarding submission
`of Sol IP infringement contentions under seal at the PTAB
`Declaration of Craig Bishop
`
`Declaration of Paul Min, PHD
`CV of Paul Min, PHD
`
`xii
`
`

`

`TABLE OF AUTHORITIES
`
`Page(s)
`
`CASES
`
`Allicrate v. Wadsworth Mfg.,
`427 F.3d 1361 (Fed. Cir. 2005)................................................................................................15
`
`Amgen Inc. v. Sanofi,
`872 F.3d 1367 (Fed. Cir. 2017)..........................................................................................16, 28
`
`Ariad Pharms., Inc. v. Eli Lilly & Co.,
`598 F.3d 1336 (Fed. Cir. 2010) (en banc) ...............................................................................16
`
`Cephalon, Inc. v. Watson Pharm., Inc.,
`707 F.3d 1330 (Fed. Cir. 2013)................................................................................................17
`
`Dow Chem. Co. v. Sumitomo Chem. Co.,
`257 F.3d 1364 (Fed. Cir. 2001)................................................................................................12
`
`Genentech, Inc. v. Novo Nordisk A/S
`108 F.3d 1361 (Fed. Cir. 1997)........................................................................................ passim
`
`In re Gosteli,
`872 F.2d 1008 (Fed. Cir. 1989)................................................................................................15
`
`In re NTP, Inc.,
`654 F.3d 1268 (Fed. Cir. 2011)................................................................................................15
`
`In re Wands,
`858 F.2d 731 (Fed. Cir. 1988)..................................................................................................17
`
`Lockwood v. American Airlines, Inc.,
`107 F.3d 1565 (Fed. Cir. 1997)....................................................................................16, 27, 30
`
`Nat. Alts. Int’l, Inc. v. Iancu,
`904 F.3d 1375 (Fed. Cir. 2018)..........................................................................................14, 18
`
`Phillips v. AWH Corp.,
`415 F.3d 1303 (Fed. Cir. 2005) (en banc)................................................................................12
`
`PowerOasis, Inc. v. T-Mobile USA, Inc.,
`522 F.3d 1299 (Fed. Cir. 2008)................................................................................................15
`
`Purdue Pharma L.P. v. Faulding Inc.,
`230 F.3d 1320 (Fed. Cir. 2000)..........................................................................................16, 30
`
`Sol IP LLC v. AT&T Mobility LLC et al.,
`Civil Action No. 2:18-cv-00526, Dkt. 132 (E.D. Tex., July 16, 2019) ...................................85
`
`xiii
`
`

`

`SPH Am., LLC v. Huawei Techs., Co.,
`No. 13-CV-2323-CAB-KSC, 2017 WL 1331920 (S.D. Cal. Apr. 10, 2017) ..........................85
`
`Streck, Inc. v. Research & Diagnostic Sys., Inc.,
`665 F.3d 1269 (Fed. Cir. 2012)................................................................................................17
`
`Utter v. Hirago,
`845 F.2d 993 (Fed. Cir. 1988)..................................................................................................15
`
`Vas-Cath Inc. v. Sakharam D. Mahurkar,
`935 F.2d 1555 (Fed. Cir. 1991)................................................................................................16
`
`STATUTES
`
`35 U.S.C. § 102 ..................................................................................................2, 32, 33, 34, 35, 36
`
`35 U.S.C. § 103(a) ...........................................................................................................................2
`
`35 U.S.C. § 112 ...................................................................................15, 16, 18, 21, 27, 29, 30, 31
`
`35 U.S.C. §§ 119 ....................................................................................................15, 18, 34, 35, 36
`
`35 U.S.C. § 120 ..................................................................................................................14, 15, 18
`
`35 U.S.C. §§ 311-319 ......................................................................................................................1
`
`OTHER AUTHORITIES
`
`37 C.F.R. § 42.8 .......................................................................................................................86, 87
`
`37 C.F.R. § 42.24(d) ......................................................................................................................87
`
`37 C.F.R. § 42.100(b) ....................................................................................................................11
`
`37 C.F.R. § 42.100 et seq. ................................................................................................................1
`
`37 C.F.R. § 42.102(a)(1) ................................................................................................................87
`
`37 C.F.R. § 42.104(a).....................................................................................................................88
`
`
`
`
`
`xiv
`
`

`

`15a
`
`15c
`
`15d
`
`15
`
`15b
`
`
`Claim Text
`Cl. No. Lim.
`15pre A method of generating a downlink frame in a wireless
`communication system, the method comprising:
`generating a downlink frame including a primary
`synchronization signal, a first secondary synchronization signal
`and a second secondary synchronization signal; and
`including cell identity group information in each of the first and
`second secondary synchronization signals and including cell
`identity information within a cell identity group in the primary
`synchronization signal so that a terminal searches for a cell
`using the cell identity group information and the cell identity
`information;
`wherein the cell identity group information is identified using at
`least one of the first secondary synchronization signal and the
`second secondary synchronization signal, and the cell identity
`information is identified using the primary synchronization
`signal
`wherein the first secondary synchronization signal comprises a
`first short sequence and a second short sequence, the first short
`sequence is scrambled with a first scrambling sequence, and the
`second short sequence is scrambled with a second scrambling
`sequence and a third scrambling sequence
`wherein the second secondary synchronization signal comprises
`the first short sequence and the second short sequence, the
`second short sequence is scrambled with the first scrambling
`sequence, and the first short sequence is scrambled with the
`second scrambling sequence and a fourth scrambling sequence,
`and
`wherein the first scrambling sequence and the second
`scrambling sequence are determined based on the cell identity
`information contained in the primary synchronization signal, the
`third scrambling sequence is determined based on a remainder
`of dividing an index of the first short sequence by 8, and the
`fourth scrambling sequence is determined based on a remainder
`of dividing an index of the second short sequence by 8; and
`transmitting the downlink frame through a transmission antenna
`
`Listing of Claims
`
`15e
`
`15f
`
`15g
`
`xv
`
`

`

`Claim Text
`
`16
`
`16a
`
`17
`
`Cl. No. Lim.
`16pre The method of claim 15
`wherein the first short sequence scrambled with the first
`scrambling sequence and the second short sequence scrambled
`with the second scrambling sequence and the third scrambling
`sequence in the first secondary synchronization signal are
`alternately disposed on a plurality of sub-carriers, and the
`second short sequence scrambled with the first scrambling
`sequence and the first short sequence scrambled with the second
`scrambling sequence and a fourth scrambling sequence in the
`second secondary synchronization signal are alternately
`disposed on a plurality of sub-carriers.
`17pre The method of claim 15
`17a wherein the first scrambling sequence is different from the
`second scrambling sequence.
`18pre The method of claim 15
`18a wherein the downlink frame includes a plurality of slots, each
`slot having a plurality of symbols
`wherein the primary synchronization signal is located on a last
`symbol of a first slot and the first secondary synchronization
`signal is located on a symbol right ahead of the last symbol of
`the first slot, and
`the primary synchronization signal is located on a last symbol of
`a second slot and the second secondary synchronization signal is
`located on a symbol right ahead of the last symbol of the second
`slot
`
`18
`
`18b
`
`18c
`
`
`
`
`
`
`
`
`
`xvi
`
`

`

`I.
`
`Preliminary Statement
`
`Petitioner Ericsson, Inc. (“Ericsson”) respectfully requests inter partes
`
`review and cancellation of claims 15-18 of U.S. Patent No. 9,204,438 (“the ’438
`
`Patent”) under 35 U.S.C. §§ 311-319 and 37 C.F.R. § 42.100 et seq.
`
`The ’438 Patent claims a method for generating and transmitting a downlink
`
`frame in a wireless communication system. Patent Owner Electronics and
`
`Telecommunications Research Institute, by and through its licensing agent Sol IP,
`
`LLC (collectively, “ETRI” or “Patent Owner”), allege that claims 15-18 of the ’438
`
`Patent are essential to LTE Release 8, specifically 36.211 section 6.11. EX-1024