`
`I 1111111111111111 11111 1111111111 111111111111111 11111 111111111111111 IIII IIII
`
`US009648601B2
`
`(IO) Patent No.: US 9,648,601 B2
`c12) United States Patent
`
`
`(45)Date of Patent:
`May 9, 2017
`Wang et al.
`
`(58)Field of Classification Search
`
`(54)COMMUNICATION METHOD, BASE
`
`
`CPC .. H04W 72/042; H04W 88/08; H04L 5/0057;
`STATION AND USER EQUIPMENT USING A
`H04L 1/0009
`
`
`SET OF LEGACY OR AGGRESSIVE CQI
`
`
`See application file for complete search history.
`TABLE AND LEGACY OR AGGRESSIVE
`MCS TABLE
`
`(56)
`
`References Cited
`
`
`
`(75) Inventors: Lilei Wang, Beijing (CN); Ming Xu,
`
`
`
`
`Beijing (CN); Masayuki Hoshino,
`
`
`
`Kanagawa (JP); Akihiko Nishio, Osaka
`(JP)
`
`U.S. PATENT DOCUMENTS
`
`7,970,001 B2 6/2011 Hoshino et al.
`
`
`
`
`8,040,912 B2 10/2011 Imamura et al.
`(Continued)
`
`
`
`(73)Assignee: Sun Patent Trust, New York, NY (US)
`
`
`
`FOREIGN PATENT DOCUMENTS
`
`( *) Notice: Subject to any disclaimer, the term ofthis
`
`
`CN
`
`
`
`patent is extended or adjusted under 35
`CN
`
`U.S.C. 154(b) by 151 days.
`
`
`101438527 A 5/2009
`
`101536320 A
`9/2009
`(Continued)
`
`(21)Appl. No.:14/416,174
`
`
`
`OTHER PUBLICATIONS
`
`(22)PCT Filed:Aug. 24, 2012
`
`3GPP TS 36.213 Vl0.5.0, "3rd Geeneration Partnership Project;
`
`
`
`
`
`
`Technical Specification Group Radio Access Network; Evolved
`(86)PCT No.:PCT /CN2012/080560
`
`
`
`
`Universal Terrestrial Radio Access (E-UTRA); Physical layer pro
`
`
`cedures (Release 10)," Mar. 2012, 125 pages.
`(Continued)
`
`§371 (c)(l),
`(2), ( 4) Date:Jan.21, 2015
`
`(87)PCT Pub. No.: WO2014/029108
`
`Primary Examiner - Jackie Zuniga Abad
`
`
`
`
`(74)Attorney, Agent, or Firm - Seed IP Law Group LLP
`
`PCT Pub. Date: Feb. 27, 2014
`
`(65)
`
`Prior Publication Data
`
`
`
`US 2015/0163773 Al Jun. 11, 2015
`
`(51)Int. Cl.
`H04W72/04
`
`H04L 5100
`
`(57)
`ABSTRACT
`The present disclosure provides a communication method,
`
`
`
`
`
`
`
`
`base station and user equipment for configuring a parameter
`
`
`
`table in a wireless communication system including a base
`
`
`
`station and a user equipment, the communication method
`
`
`
`comprising: defining at both the base station and the user
`(2009.01)
`
`
`
`
`equipment a parameter table which includes whole entries of
`(2006.01)
`
`
`
`
`a legacy parameter table and extended entries; and trans
`
`
`
`
`mitting from the base station to the user equipment a bitmap
`(Continued)
`
`
`
`
`indication which indicates a sub-table selected from the
`(52)U.S. Cl.
`
`
`
`
`
`parameter table, wherein the number of the entries in the
`CPC ........... H04W 721042 (2013.01); H04L 11003
`
`
`
`
`
`
`sub-table is the same as in the legacy parameter table.
`
`
`(2013.01); H04L 110016 (2013.01);
`(Continued)
`
`
`
`17 Claims, 13 Drawing Sheets
`
`Carrier I: conservative CQI table for ro ust
`
`
`
`access;
`
`
`
`throughput
`
`Carrier 2: aggressive CQJ table for boosting
`
`Samsung Ex. 1006
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`
`US 9,648,601 B2
`
`Page 2
`
`(51)
`Int. Cl.
`H04L 1/00
`
`H04W 88/02
`
`(2006.01)
`(2009.01)
`(2009.01)
`
`Al
`
`1/2012 Imamura et al. 2012/0008517
`
`
`7/2012 Mujtaba 2012/0182899 Al et al.
`
`
`2013/0208606 Al * 8/2013 Merlin .................. H04L 1/0025
`370/252
`
`H04W 88/08
`Al
`2014/0211635
`7/2014 Piet al.
`(52) U.S. Cl.
`
`Al
`2015/0016553
`1/2015 Yang et al.
`
`2015/0036590 Al *
`
`
`2/2015 Lahetkangas ......... H04L 1/0003
`CPC .......... H04L 110026 (2013.01); H04L 110029
`
`
`370/328
`
`
`(2013.01); H04L 110035 (2013.01); H04L
`
`
`510057 (2013.01); H04L 1/0003 (2013.01);
`FOREIGN PATENT DOCUMENTS
`
`H04L 1/0009 (2013.01); H04W 88/02
`
`(2013.01); H04W 88/08 (2013.01)
`CN
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`OTHER PUBLICATIONS
`
`
`101674149 A 3/2010
`
`102624481 A 8/2012
`
`CN
`EP
`1 903 692 Al
`3/2008
`EP
`
`2 073 417 A2 6/2009
`EP
`
`2 811 676 Al 12/2014
`JP
`
`2011-142664 A 7/2011
`
`8,139,547 B2 3/2012 Hoshino et al.
`JP
`
`4823225 B2 11/2011
`
`8,160,087 B2 4/2012 Hoshino et al.
`WO
`
`
`2010/061825 Al 6/2010
`
`8,406,189 B2 3/2013 Hoshino et al.
`
`8,699,960 B2 4/2014 Pi et al.
`
`9,166,736 B2 10/2015 Imamura et al.
`
`
`2006/0287743 Al 12/2006 Sampath et al.
`International Search Report dated Jun. 6, 2013, for corresponding
`
`
`
`2007 /0259671 Al 11/2007 Cheng et al.
`
`2009/0141648 Al 6/2009 Imamura et al.
`
`
`
`International Application No. PCT/CN2012/080560, 4 pages.
`2009/0163142 Al 6/2009 Pi et al.
`
`
`Extended European Search Report, dated Apr. 14, 2016, for corre
`
`2010/0208606 Al 8/2010 Hoshino et al.
`
`
`
`
`sponding EP Application No. 12883201.1-1874 / 2888827, 10
`
`2011/0096690 Al 4/2011 Hoshino et al.
`pages.
`
`2011/0096691 Al 4/2011 Hoshino et al.
`2011/0211482 Al 9/2011 Hoshino et al.
`*cited by examiner
`
`2011/0235604 Al 9/2011 Inoue et al.
`
`Samsung Ex. 1006
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`
`
`
`U.S. Patent May 9, 2017 Sheet 1 of 13
`
`US 9,648,601 B2
`
`
`
`CQI Index moourafion C{J-de rate x effhr::tency
`
`1024
`
`0
`
`1
`
`2
`
`4
`
`5
`
`8
`
`out of range
`
`QPSK
`ClPSK
`120
`
`78
`
`193
`QPSK
`
`308
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`449
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`502
`QPSK
`
`640AM
`
`c�.1523
`
`{J.8.77
`
`'1.1758
`
`2-4063
`
`:2,7305
`
`3.32:23
`
`3.9023
`
`4-,52:34.
`77:2
`
`948
`
`Fig.1
`
`(Prior Art)
`
`Subband differential Offset level
`
`CQlvalue
`
`0
`
`1
`
`2
`
`3
`
`0
`
`1
`
`:?:2
`
`s:-1
`
`Fig.2
`(Prior Art)
`
`Samsung Ex. 1006
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`
`Sheet 2 of 13
`U.S. Patent May 9, 2017
`
`US 9,648,601 B2
`
`l}
`
`:2
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`
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`24
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`26
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`Reser,;•ed
`
`Fig.3
`(Prior Art)
`
`Samsung Ex. 1006
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`
`
`
`U.S. Patent May 9, 2017 Sheet 3 of 13 US 9,648,601 B2
`
`401
`
`Low SINR
`
`A
`
`·•'
`..
`
`Fig.4
`
`Samsung Ex. 1006
`
`
`
`
`U.S. Patent May 9, 2017
`Sheet 4 of 13
`
`US 9,648,601 B2
`
`Pcell
`( �
`).__C arrie�r 1
`
`Fig.5
`
`Uplink (high SINR due
`
`
`◄ to few uplink traffics)
`
`Downlink (low SINR due to
`
`
`many active downlink traffics)
`
`Fig.6
`
`Samsung Ex. 1006
`
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`
`
`U.S. Patent May 9, 2017
`
`Sheet 5 of 13 US 9,648,601 B2
`
`start
`
`701
`
`defining at both eNB and UE a parameter table
`
`
`
`
`which includes whole entries of a legacy
`
`
`parameter table and extended entries
`
`702
`
`transmitting from e N B to U E a bitmap
`
`
`
`
`indication which indicates a sub-table selected
`
`from the parameter table
`
`end
`
`Fig.7
`
`Samsung Ex. 1006
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`
`
`
`U.S. Patent May 9, 2017 Sheet 6 of 13 US 9,648,601 B2
`
`801
`802
`803
`
`
`r r r
`CQI modulation code rate efficiency bitmap1
`
`bitmap2 bitmap3
`
`
`
`index
`
`X 1024
`
`0
`
`1
`
`2
`
`3
`
`4
`
`5
`
`6
`
`7
`
`out of range
`
`1
`
`QPSK
`
`78
`
`0.1523 1
`
`QPSK 120 0.2344 1
`
`QPSK 193 0.377 1
`
`QPSK 308 0.6016 1
`
`QPSK 449 0.877 1
`
`QPSK 602 1.1758 1
`
`16QAM 378 1.4766 1
`
`8
`
`16QAM 490 1.9141 1
`
`9
`
`16QAM 616 2.4063 1
`
`10
`
`64QAM
`
`466 2.7305 1
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`11 64QAM 567 3.3223 1
`
`12 64QAM 666 3.9023 1
`
`13 64QAM 772 4.5234 1
`
`14 64QAM 873 5.1152 1
`
`15 64QAM 948 5.5547 1
`
`16 256QAM 720 5.6250 0
`
`17 256QAM 750 5.8594 0
`
`18 256QAM 770 6.0156 0
`
`19 256QAM 800 6.2500 0
`
`20
`
`256QAM 820 6.4063 0
`
`21 256QAM 840
`
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`
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`
`860 6.7188 0
`
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`
`880 6.8750 0
`
`24 256QAM 900
`
`7.0313 0
`
`25 256QAM 920 7.1875 0
`
`26 256QAM 940 7.3438 0
`
`. . . .
`
`Fig.8
`
`0
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`Samsung Ex. 1006
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`
`
`U.S. Patent
`
`May 9, 2017 Sheet 7 of 13 US 9,648,601 B2
`
`( 901
`902 903
`r
`r
`bitmap1 bitmap2
`Offset
`Subband
`differential
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`
`Fig.9b
`
`0
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`> =2
`
`Samsung Ex. 1006
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`U.S. Patent May 9, 2017 Sheet 8 of 13 US 9,648,601 B2
`
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`1
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`Samsung Ex. 1006
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`U.S. Patent May 9, 2017
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`Sheet 9 of 13 US 9,648,601 B2
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`1100
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`,-
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`1101
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`1102
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`storing unit 1-------1 transmitting unit
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`Fig.11
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`1200
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`,-
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`1201
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`1202
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`storing unit 1-------1 receiving unit
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`Fig.12
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`start
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`1301
`defining at both e N B and U E multiple
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`parameter tables includ i n g at least a
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`legacy table and an aggressive table
`1302
`transmitting from eN B to U E an indication
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`which indicates a parameter table selected
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`from the multiple parameter tables
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`end
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`Fig.13
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`Samsung Ex. 1006
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`U.S. Patent May 9, 2017
`Sheet 10 of 13
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`US 9,648,601 B2
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`(1401
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`(1402
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`legacy CQI table
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`aggressive CQI table
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`CQI index modulation code efficiency CQI index modulation code efficiency
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`rate x
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`1024
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`out of range
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`QPSK
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`78 0.1523
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`rate x
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`1024
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`out of range
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`QPSK
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`78 0.1523
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`0
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`1
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`QPSK 120
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`0.2344 2
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`16QAM 490 1.9141
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`QPSK 193
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`0.377 3
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`16QAM
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`616
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`2.4063
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`QPSK 308 0.6016
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`4
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`64QAM 466
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`2.7305
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`QPSK 449
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`0.877 5
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`64QAM 567 3.3223
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`QPSK 602 1.1758
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`16QAM 378 1.4766
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`16QAM 490 1.9141
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`6
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`7
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`8
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`64QAM 666 3.9023
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`64QAM 772 4.5234
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`64QAM 873 5.1152
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`16QAM 616
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`2.4063 9
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`64QAM 948 5.5547
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`0
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`1
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`2
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`3
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`4
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`5
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`6
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`7
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`8
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`9
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`10
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`64QAM 466 2.7305
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`10
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`256QAM 720
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`5.625
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`11
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`64QAM 567 3.3223
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`11
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`256QAM 770 6.015625
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`12
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`64QAM 666
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`3.9023 12
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`256QAM 800
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`6.25
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`13
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`64QAM 772 4.5234
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`13
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`256QAM 860 6.71875
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`14
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`64QAM 873 5.1152
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`14
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`256QAM 900 7.03125
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`15
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`64QAM 948 5.5547
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`15
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`256QAM 940 7.34375
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`Fig.14
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`Samsung Ex. 1006
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`Sheet 11 of 13
`U.S. Patent May 9, 2017
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`US 9,648,601 B2
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`1500
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`(
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`1501
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`unit storing unit 1-------1 transmitting
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`Fig.15
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`1600
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`(
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`1601
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`storing unit -- receiving unit
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`Fig.16
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`start
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`1701
`defining at both e NB and U E a parameter
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`table which includes whole entries of a
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`legacy parameter table and extended entries
`1702
`transmitting from e N B to U E an indication
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`which indicates one entry o f the parameter
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`table, by legacy bits and at least one unused
`bit jointly
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`end
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`Fig.17
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`Samsung Ex. 1006
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`U.S. Patent May 9, 2017
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`US 9,648,601 B2
`Sheet 12 of 13
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`start
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`1801
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`defining at both eNB and UE a parameter table which
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`includes whole entries of a legacy parameter table
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`and extended entries
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`1802
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`transmitting from eNB to UE an indication which
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`indicates one entry of the parameter table by a
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`number of bits, wherein the number of bits
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`corresponds to the number of entries in the parameter
`table
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`end
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`Fig.18
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`Samsung Ex. 1006
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`U.S. Patent May 9, 2017 Sheet 13 of 13
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`US 9,648,601 B2
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`1A
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`1A
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`7.1.5B) Up to 8 layer transmission, ports 7-14 (see subclause
`
`Mode 9 DCI Common Non-MBSFN
`subframe: If the number of PBCH antenna ports is
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`format and one, Single-antenna port, port O is used (see subclause 7.1.1 ),
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`otherwise Transmit diversity (see subclause 7 .1.2)
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`port, port 7 (see subclause UE MBSFN subframe: Single-antenna
`specific 7.1.1)
`by
`C-RNTI
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`DCI UE
`format specific
`2C by
`C-RNTI
`ports is If the number of PBCH antenna Mode DCI Common Non-MBSFN subframe:
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`7.1.1 ), 9+ format and one, Single-antenna port, port O is used (see subclause
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`otherwise Transmit diversity (see subclause 7 .1.2)
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`port, port 7 (see subclause UE MBSFN subframe: Single-antenna
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`specific 7.1.1)
`by
`C-RNTI
`DCI UE
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`format specific
`2C+ by
`C-RNTI
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`
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`Up to 8 layer transmission, ports 7-14 (see subclause 7.1.5B)
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`Fig.19
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`Samsung Ex. 1006
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`US 9,648,601 B2
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`
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`TECHNICAL FIELD
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`BACKGROUND ART
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`Subband differential CQI offset level�subband CQI
`
`The present disclosure is made in consideration of the
`
`1
`2
`MIMO and dense deployment of small cell etc., user equip
`
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`COMMUNICATION METHOD, BASE
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`ment has more opportunities to maintain high quality wire
`STATION AND USER EQUIPMENT USING A
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`SET OF LEGACY OR AGGRESSIVE CQI
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`less charmel link with high SINR, so it is possible and
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`TABLE AND LEGACY OR AGGRESSIVE
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`benefical for the system to support higher modulation orders
`MCS TABLE
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`5 than current system, like 256QAM or 1024QAM, in order to
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`further improve the spectral efficiency and user throughput.
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`paramCorrespondingly, there is a need to configu re the
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`eter table, such as the CQI table or the MCS table described
`The present disclosure relates to parameter table configu
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`above, so that more entries corresponding to higher modu-
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`ration teclmique in the communication field.
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`coding rates than those in the legacy 10 lation orders and/or
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`
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`tables can be indicated. There is also a need to configu re the
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`differential CQI table to indicate more CQI offset levels, so
`
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`that the indication of the differential CQI can be more
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`
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`In 3GPP (3rd Generation Partnership Project) Rel.8/9/10
`accurate.
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`system, Channel Quality Indicator (CQI), one type of chan
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`
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`15
`nel state information (CSI), is an important communication
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`above aspects.
`
`
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`parameter used for scheduling and link adaptation at eNo
`According to one aspect of the present disclosure, there is
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`deB (eNB). In practice, since UE (user equipment) knows
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`
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`provided a communication method of configuring a param
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`better about the downlink channel based on certain reference
`
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`signal, like CRS (common reference sign al) or CSI-RS
`
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`eter table in a wireless communication system including a
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`
`
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`(charmel state information-reference signal), CQI is calcu-20
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`base station and a user equipment, comprising: defining at
`
`lated and recommended at UE side. Then, CQI is feedback
`
`
`both the base station and the user equipment a parameter
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`
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`by the UE with a certain index in the CQI table, which
`
`table which includes whole entries of a legacy parameter
`includes some combinations of modulation order and coding
`
`
`
`
`
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`table and extended entries; and transmitting from the base
`rate, referring to Table 7.2.3-1 in 3GPP TS 36.213 Vl0.5.0,
`
`
`
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`station to the user equipment a bitmap indication which
`
`
`
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`which is entirely incorporated hereto by reference. 25 indicates a sub-table selected from the parameter table.
`
`
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`
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`FIG. 1 shows the CQI table in TS 36.213. It can be seen
`
`
`
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`According to another aspect of the present disclosure,
`
`
`from FIG. 1 that the standard CQI table, which may also be
`
`
`there is provided a communication method of configuring a
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`
`
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`referred to as a legacy CQI table, includes 16 entries with
`
`
`
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`parameter table in a wireless communication system includ
`
`
`indices from 0-15, corresponding to modulation schemes
`
`
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`ing a base station and a user equipment, comprising: defin
`
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`such as QPSK, 16QAM and 64QAM. Therefore, 4 bits are 30
`
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`ing at both the base station and the user equipment multiple
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`
`
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`necessary to reflect a certain entry when the UE feedbacks
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`parameter tables which include at least a legacy parameter
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`a certain wideband CQI to the eNB.
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`table and an aggressive parameter table which includes new
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`As to other CQI types defined according to different
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`modulation order related entries or new combinations of
`
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`feedback modes or transmission modes, such as subband
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`modulation order and coding rate; and transmitting from the
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`CQI, spatial CQI or UE selected CQI, UE do not directly
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`base station to the user equipment an indication which
`35
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`
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`feedback the entry/index in the same CQI table as shown in
`
`
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`indicates a parameter table selected from the multiple
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`
`
`
`FIG. 1. Instead, an implicit mechanism is used to feedback
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`
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`parameter tables, wherein the number of entries in any one
`
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`their CQI offset level from the wideband CQI value. For
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`of the multiple parameter tables is the same as in the legacy
`example,
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`unchanged. parameter table to keep sign aling overhead
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`
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`According to a further aspect of the present disclosure,
`40
`
`index-wideband CQI index.
`
`
`there is provided a communication method of configuring a
`
`
`
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`parameter table in a wireless communication system includ
`FIG. 2 shows the subband differential CQI table in TS
`
`
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`
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`ing a base station and a user equipment, comprising: defin
`
`
`
`
`36.213. It can be seen that the standard subband differential
`
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`ing at both the base station and the user equipment a
`
`CQI table, which may also be referred to as a legacy sub band
`
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`45 parameter table which includes whole entries of a legacy
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`differential CQI table, includes 4 entries with indices from
`
`
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`parameter table and extended entries; and transmitting from
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`0 to 3. Therefore, UE needs 2 additional bits to feedback the
`
`
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`the base station to the user equipment an indication which
`
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`subband differential CQI offset level.
`
`
`
`indicates one entry of the parameter table, by legacy bits and
`
`Also, Modulation Coding Scheme (MCS) is an important
`at least one unused bit jointly.
`
`
`
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`communication parameter in 3GPP Rel.8/9/10 system. MCS
`According to a further aspect of the present disclosure,
`
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`
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`refers to which combination of modulation order and coding 50
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`there is provided a communication method of configuring a
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`rate is used in physical transmission of downlink and uplink.
`
`
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`parameter table in a wireless communication system includ
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`There is also a table, called MCS table, restricts which
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`ing a base station and a user equipment, comprising: defin
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`
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`combination of modulation order and transport block size
`
`
`ing at both the base station and the user equipment a
`could be used.
`
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`55 parameter table which includes whole entries of a legacy
`
`
`FIG. 3 shows the MCS table in TS 36.213. It can be seen
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`
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`parameter table and extended entries; and transmitting from
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`that the standard MCS table, which may also be referred to
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`the base station to the user equipment an indication which
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`
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`as a legacy MCS table, includes 32 entries with indices from
`
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`indicates one entry of the parameter table by a number of
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`0-31, corresponding to modulation orders such as 2, 4 and 6.
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`
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`bits, wherein the number of bits corresponds to the number
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`
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`The last three entries with indices 29-31 are used for
`
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`60 of entries in the parameter table.
`
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`re-transmission. In 3GPP, which MCS is used is informed in
`According to a further aspect of the present disclosure,
`
`
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`
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`Downlink Control Information (DCI). And 5 bits are nec
`
`
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`there is provided a base station for configuring a parameter
`
`
`essary for this indication.
`
`
`
`
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`table in a wireless communication system including the base
`SUMMARY OF THE DISCLOSURE
`
`
`
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`station and a user equipment, comprising: a storing unit
`
`
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`65 which stores a pre-defined parameter table including whole
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`
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`With the future introduction of new teclmologies and new
`
`
`entries of a legacy parameter table and extended entries; and
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`
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`network deployment, such as 3D beamforming, massive
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`
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`a transmitting unit which transmits to the user equipment a
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`Samsung Ex. 1006
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`US 9,648,601 B2
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`3
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`4
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`FIGS. 9a and 9b are diagrams schematically showing two
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`from selected bitmap indication which indicates a sub-table
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`kinds of extended differential CQI tables and corresponding
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`the pre-defined parameter table, wherein the number of the
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`bitmap examples according to the first embodiment of the
`
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`entries in the subtable is the same as in the legacy parameter
`
`present disclosure;
`table.
`FIGS. 10a and 10b are diagrams schematically showing
`
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`5
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`According to a further aspect of the present disclosure,
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`two kinds of extended MCS tables based on positions of
`there is provided a user equipment for configuring a param
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`reserved entries and corresponding bitmap examples accord
`eter table in a wireless communication system including a
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`ing to the first embodiment of the present disclosure;
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`base station and the user equipment, comprising: a storing
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`FIG. 11 is a diagram schematically showing the configu-
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`unit which stores a pre-defined parameter table including
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`10 ration of a base station according to the first embodiment of
`whole entries of a legacy parameter table and extended
`
`
`
`the present disclosure;
`entries; and a receiving unit which receives from the base
`
`
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`FIG. 12 is a diagram schematically showing the configu
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`station a bitmap indication which indicates a sub-table
`
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`ration of a user equipment according to the first embodiment
`
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`selected from the pre-defined parameter table, wherein the
`
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`of the present disclosure;
`
`
`number of the entries in the subtable is the same as in the
`FIG. 13 is a flowchart showing an exemplary implemen
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`
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`15
`
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`legacy parameter table.
`
`
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`tation of a communication method according to a second
`
`
`
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`According to a further aspect of the present disclosure,
`
`
`
`embodiment of the present disclosure;
`there is provided a communication method of configu ring
`
`
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`
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`FIG. 14 is a diagram schematically showing a legacy
`
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`different CQI tables for different CQI types considering
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`
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`parameter table and an aggressive parameter table according
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`
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`wideband CQI is explicitely indicated by CQI table but other
`
`
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`20 to the second embodiment of the present disclosure;
`
`
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`CQI type like spatial CQI, sub band CQI or VE-selected CQI
`
`
`
`FIG. 15 is a diagram schematically showing the configu
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`
`
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`is implicitly indicated by subband differential CQI table.
`
`
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`ration of a base station according to the second embodiment
`
`
`
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`According to a further aspect of the present disclosure,
`
`
`of the present disclosure;
`
`
`there is provided a communication method of configu ring
`FIG. 16 is a diagram schematically showing the configu-
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`25 ration of a user equipment according to the second embodi
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`
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`new parameter table in a wireless communication system
`
`
`ment of the present disclosure;
`
`
`
`including a base station and the user equipment, in which
`
`
`
`FIG. 17 is a flowchart showing an exemplary implemen
`
`
`there is no half closed-interval definition for offset levels.
`
`
`
`tation of a communication method according to a third
`
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`
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`Instead, only values have been defined in the table and the
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`
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`embodiment of the present disclosure;
`
`
`indicated values based on bitmap form the full closed-
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`30 FIG. 18 is a flowchart showing an exemplary implemen
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`interval table automatically.
`
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`tation of a communication method according to a fourth
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`According to the communication methods and commu
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`embodiment of the present disclosure; and
`
`nication apparatuses of various aspects of the present dis
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`
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`FIG. 19 is a diagram schematically showing a new
`
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`
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`closure, more entries than those in the legacy tables can be
`
`
`
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`transmission format according to the fourth embodiment of
`
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`indicated. Thereby, higher modulation orders can be sup
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`35 the present disclosure.
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`ported to adapt channel and improve spectral efficiency but
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`without increasing the reported overhead.
`
`
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`DESCRIPTION OF THE EMBODIMENTS
`
`
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`BRIEF DESCRIPTION OF THE DRAWINGS
`
`In the following detailed description, reference is made to
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`40 the accompanying drawings, which form a part thereof. In
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`These and/or other aspects and advantages of the present
`
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`the drawings, similar symbols typically identify similar
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`
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`disclosure will become more distinct and easier to be
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`components, unless context dictates otherwise. It will be
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`understood in a detailed description of embodiments of the
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`readily understood that the aspects of the present disclosure
`
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`present disclosure below in combination with attached draw
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`
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`can be arranged, substituted, combined, and designed in a
`ings, in which:
`
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`45 wide variety of different configurations, all of which are
`
`
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`explicitly contemplated and make part of this disclosure.
`
`
`
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`FIG. 1 is a diagram showing the legacy CQI table in the
`
`(First Embodiment)
`
`
`conventional communication system;
`A communication method of configuring a parameter
`
`
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`
`
`
`FIG. 2 is a diagram showing the legacy subband differ
`
`
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`table in a wireless communication system including an
`
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`ential CQI table in the conventional communication system;
`
`
`
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`50 eNode Band a UE is provided in the first embodiment of the
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`
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`FIG. 3 is a diagram showing the legacy MCS table in the
`
`
`
`present disclosure. The communication method comprises
`
`
`conventional communication system;
`
`the steps of: defining at both the eNode B and the UE a
`
`
`
`FIG. 4 is a diagram schematically showing communica
`
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`parameter table which includes whole entries of a legacy
`
`
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`tion scenarios where UE has different modulation/coding
`
`
`
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`parameter table and extended entries; and transmitting from
`
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`rate requirements at different positions;
`
`55 the eNode B to the UE a bitmap indication which indicates
`
`
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`FIG. 5 is a diagram schematically showing communica
`
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`a sub-table selected from the parameter table, wherein the
`
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`tion scenarios where different carrier components (CCs)
`
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`
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`number of the entries in the sub-table is the same as in the
`
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`have different modulation/coding rate requirements;
`
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`legacy parameter table.
`
`
`
`FIG. 6 is a diagram schematically showing communica
`
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`Before the detailed explanation on the implementation of
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`
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`tion scenarios where different links have different modula
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`60 the communication method according to the first embodi
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`tion/coding rate requirements;
`
`
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`ment of the present disclosure, a description will be made to
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`FIG. 7 is a flowchart showing an exemplary implemen
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`
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`different communication scenarios ofUE as well as different
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`tation of a communication method according to a first
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`requirements on modulation order/coding rate, with refer-
`
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`embodiment of the present disclosure;
`
`ence to FIGS. 4-6.
`
`
`
`FIG. 8 is a diagram schematically showing an extended
`FIG. 4 is a diagram schematically showing communica
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`65
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`CQI table and corresponding bitmap examples according to
`
`
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`tion scenarios where UE has different modulation/coding
`
`
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`the first embodiment of the present disclosure;
`
`
`rate requirements at different positions.
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`Samsung Ex. 1006
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`US 9,648,601 B2
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`5
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`6
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`In addition, the parameter table may include the whole
`As shown in FIG. 4, UE 401 is in a local area or massive
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`entries of a legacy parameter table and some extended
`
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`multiple-input-multiple-output (MIMO) scenario 400. It is
`
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`entries. The entries of the legacy parameter table may be
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`found that UE 401 may have different requirements on
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`standard entries defined in standards such as 3GPP TS
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`modulation order/coding rate at different positions. For
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`36.213, and they may correspond to communication sce
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`example, UE 401 will experience different signal-to-noise
`5
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`narios where relatively conservative modulation orders/
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`ratio (SINR) conditions when it is at different positions.
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`coding rates are required. The extended entries may be
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`Specially, ifUE 401 is moving slowly from cell edge (e.g.
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`extended entries defined according to the first embodiment
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`position A) to a position (e.g. position B) closer to the cell
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`of the present disclosure, and they may correspond to
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`center, and finally to the cell center (e.g. position C), it will
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`communication scenarios where relatively aggressive modu
`10
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`experience low SINR, medium-high SINR and very high
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`lation orders/coding rates are required.
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`SINR conditions, respectively. Obviously, low SINR area
`Next, at step 702, the eNode B transmits to the UE a
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`needs a relatively lower effective coding rate, while high
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`bitmap indication which indicates a sub-table selected from
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`SINR area needs a relatively high effective coding rate.
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`the parameter table.
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`FIG. 5 is a diagram schematically showing communica-
`Specially, the bitmap indication may be transmitted by the
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`15
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`tion scenarios where different carrier components (CCs)
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`eNode B to the UE via a upper layer or in sign aling in the
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`have different modulation/coding rate requirement.
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`the physical layer. For example, the bitmap indication may
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`In the scenario of carrier aggregation (CA), as shown in
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`be transmitted via the Radio Resource Control (RRC) sig
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`FIG. 5, similarly, it is found that different CCs may also have
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`naling semi-statically or implicitly triggered via bits in
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`different modulation/coding rate requirements due to differ-20
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`Downlink Control Information (DCI) format dynamically
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`ent SINR/interference/chamiel conditions. For example, for
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`(specific configurations are via RRC signaling).
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`CCs from Pcell to UE, such as carrier 1, there may be a
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`The bitmap may be used for indicating the sub-table
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`requirement on a conservative CQI table (e.g. the legacy
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`selected from the parameter table. It should be noted that the
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`CQI table) for robust access; while for CCs from Scell to
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`number of the entries in the sub-table is the same as in the
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`UE, such as carrier 2, there may be a requirement on an
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`legacy parameter table, so that the signaling overhead
`25
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`aggressive CQI table for boosting throughput.
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`related to the indication in the physical layer is kept
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`FIG. 6 is a diagram schematically showing unchanged. communica
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`tion scenarios where different links have different modulaThe bitmap may be generated by the eNode B based on
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`tion/coding rate requirement.
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`the communication scenarios of the wireless communication
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`In the scenario
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`30 system as of FIG. 6, similarly, it is found that uplink described above typically or any other suitable
`scenanos.
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`and downlink may have different modulation/coding rate
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`After the eNode B transmits to the UE the bitmap indi-
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`requirements due to different SINR/interference/channel
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`cation, both the eNode B and the UE are aware of the
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`conditions. For example, for downlink transmissions, there
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`sub-table currently in use, so they may communicate an
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`may be a requirement on a conservative CQI table (e.g. the
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`index of an entry in the parameter sub-table with each other.
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`legacy CQI table) due to much active downlink traffic; while 35
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`For example, for the CQI table, UE may report the CQI
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`for uplink transmissions, there may be a requirement on an
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`index to the eNode B based on the sub-table and eNB clearly
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`aggressive CQI table due to less uplink traffic, and hence
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`know the exactly same table where UE is referring to. For
`high SINR.
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`the MCS table, the eNode B may inform the UE of the MCS
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`From FIGS. 4-6, it is expected that different parameter
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`index and UE assumes the same MCS table as that in eNB.
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`tables, such as CQI/MCS table, which include special com-40
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`Moreover, since the extended parameter table comprises
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`binations of modulation order/coding rate, c