I 1111111111111111 11111 111111111111111 11111 11111 1111111111111111 IIII IIII IIII
`
`US009860044B2
`
`(IO) Patent No.: US 9,860,044 B2
`
`c12) United States Patent
`(45)Date of Patent:*Jan. 2, 2018
`
`
`Astely et al.
`
`(54)PUCCH RESOURCE ALLOCATION FOR
`
`(58)Field of Classification Search
`
`
`
`CARRIER AGGREGATION IN
`
`
`
`CPC .. H04B 1/3833; H04M 1/0247; H04M 1/0237
`LTE-ADVANCED
`(Continued)
`
`(71)Applicant: Telefonaktiebolaget LM Ericsson
`
`
`(56)
`
`
`(publ), Stockholm (SE)
`
`
`
`References Cited
`
`(72)Inventors: David Astely, Bromma (SE); Robert
`
`
`
`Baldemair, Solna (SE); Dirk
`
`
`Gerstenberger, Stockholm (SE);
`
`
`Daniel Larsson, Stockholm (SE); Lars
`
`
`Lindbom, Karlstad (SE); Stefan
`Parkvall, Bromma (SE)
`
`U.S. PATENT DOCUMENTS
`
`
`
`
`
`8,265,030 B2 * 9/2012 Miki
`
`
`8,194,603 B2 * 6/2012 Nimbalker .............. H04L 5/001
`
`370/329
`H04W 72/1257
`370/330
`(Continued)
`
`(73)Assignee: TELEFONAKTIEBOLAGET LM
`
`
`
`
`ERICSSON (PUBL), Stockholm (SE)
`
`CN
`( *) Notice: Subject to any disclaimer, the term ofthis
`
`
`WO
`
`
`
`patent is extended or adjusted under 35
`
`U.S.C. 154(b) by O days.
`
`FOREIGN PATENT DOCUMENTS
`
`101765208 A 6/2010
`
`
`
`
`2009022474 Al 2/2009
`
`OTHER PUBLICATIONS
`
`(21)Appl. No.: 15/350,360
`
`
`
`claimer.
`
`This patent is subject to a terminal dis­
`
`3rd Generation Partnership Project, Motorola (source), "Control
`
`
`
`
`
`
`
`3GPP TSG Carrier Aggregation," Sign alling Design for Supporting
`
`
`
`RANI #56, Rl-090792, Athens, GR, Feb. 9-13, 2009.
`(Continued)
`
`
`
`(22)Filed:Nov. 14, 2016
`
`(65)
`
`
`
`Prior Publication Data
`
`
`
`US 2017/0063506 Al Mar. 2, 2017
`
`
`
`
`
`Related U.S. Application Data
`
`Primary Examiner - Md Talukder
`
`
`
`
`
`
`
`(74)Attorney, Agent, or Firm - Coats & Bennett, PLLC
`
`(57)
`
`ABSTRACT
`
`(51)
`Int. Cl.
`H04M 1100
`
`(63) Continuation of application No. 12/896,993, filed on
`
`
`
`
`Systems and methods of signaling upliuk control informa­
`
`
`
`
`Oct. 14, 2010, now Pat. No. 9,497,004.
`
`
`
`tion in a mobile communication network using carrier
`(Continued)
`
`
`
`aggregation are provided. In one exemplary embodiment, a
`
`
`
`
`method may include scheduling downlink transmissions to a
`
`
`
`
`
`first user terminal on a single downlink component carrier
`
`
`(CC)associated with a primary cell and scheduling down­
`
`
`link transmissions to a second user terminal on multiple
`
`
`
`downlink CCs or on a downlink CC associated with a
`
`
`
`
`
`non-primary cell. Further, the method may include receiv­
`(52)
`U.S. Cl.
`
`
`
`ing, on a first set of radio resources, control information
`CPC ............ H04L 510053 (2013.01); H04L 51001
`
`
`
`
`
`
`associated with the downlink transmissions to the first user
`
`
`(2013.01); H04L 510094 (2013.01); H04W
`
`
`
`
`terminal. In addition, the method may include receiving, on
`28126 (2013.01);
`(Continued)
`(Continued)
`
`(2006.01)
`(2006.01)
`H04L 5100
`(Continued)
`
`12
`
`IPR2022-00648
`Apple EX1001 Page 1
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`

`

`US 9,860,044 B2
`
`Page 2
`
`
`
`
`
`
`a second set of radio resources, control information associ­
`
`
`ated with the downlink transmissions to the second user
`
`terminal.
`
`
`
`41 Claims, 12 Drawing Sheets
`
`
`
`
`
`
`
`Related U.S. Application Data
`
`
`
`
`
`
`
`2012/0140708 Al* 6/2012 Choudhury . H04W 72/082
`
`
`
`5, 2009.
`
`(51)Int. Cl.
`H04W28/26
`
`
`
`
`
`2013/0003700 Al* 1/2013 Zhang .
`
`2011/0243039 Al* 10/2011 Papasakellariou .... H04L 1/1861
`
`370/280
`
`
`2011/0310856 Al* 12/2011 Hariharan ............. H04L 1/1607
`370/336
`
`2012/0020317 Al* 1/2012 Ishii ...................... H04L 1/1854
`370/329
`
`2012/0051306 Al* 3/2012 Chung .................. H04L 1/1893
`370/329
`
`
`2012/0082125 Al* 4/2012 Huang .................. H04L 5/0007
`370/329
`
`
`
`
`(60)Provisional application No. 61/248,661, filed on Oct.
`370/328
`2012/0147847 Al 6/2012 Matsumoto et al.
`
`
`
`
`
`2012/0314675 Al* 12/2012 Vujcic ..................... H04L 5/001
`370/329
`H04W 76/028
`370/331
`
`2013/0010721 Al* 1/2013 Aiba ..................... H04L 1/1812
`370/329
`
`2013/0034073 Al* 2/2013 Aiba ..................... H04L 1/0026
`370/329
`H04W 72/0413
`370/329
`
`2014/0078941 Al* 3/2014 Seo ....................... H04L 1/1822
`370/280
`
`(2009.01)
`(2009.01)
`(2009.01)
`(2009.01)
`(2009.01)
`H04W 48/16
`(2009.01)
`H04W 88/02
`(2009.01)
`H04W 88/08
`(52)U.S. Cl.
`CPC ... H04W 7210453 (2013.01); H04W 7211273
`
`
`
`
`
`(2013.01); H04L 5/0005 (2013.01); H04W
`
`
`8/24 (2013.01); H04W 48/16 (2013.01); H04W
`
`88/02 (2013.01); H04W 88/08 (2013.01)
`3rd Generation Partnership Project, ZTE (source), "Uplink Control
`
`
`
`
`
`
`( 58)Field of Classification Search
`
`Channel Design for LTE-Advanced," TSG-RAN WGl #58,
`
`
`
`
`USPC ......... 455/451, 452.1, 509, 456.1, 522, 137,
`
`
`
`
`Rl-093209, Shenzhen, China, Jun. 25-Aug. 29, 2009.
`
`455/103, 575, 456.6
`
`
`
`3rd Generation Partnership Project, Nokia, Nokia Siemens Net­
`
`
`
`See application file for complete search history.
`
`
`
`
`
`works (source), "Ll Control Signaling with Carrier Aggregation in
`
`LTE-Advanced," 3GPP TSG-RAN WGl Meeting #54bis,
`
`
`
`Rl-083730, Prague, Czech Republic, Sep. 29-Oct. 3, 2008.
`
`
`
`3rd Generation Partnership Project, Nokia Siemens Networks,
`
`
`
`Nokia (source), "Channelization of SRI and Persistent ACK/NACK
`
`
`
`on PUCCH," 3GPP TSG RAN WGl Meeting #52bis, Rl-081460,
`8,447,343 B2 * 5/2013 Gerstenberger H04W 52/10
`
`
`
`
`Shenzhen, China, Mar. 31-Apr. 4, 2008.
`370/248
`3rd Generation Partnership Project, Qualcomm Europe, "Clarifying
`
`
`
`
`
`
`8,472,368 B2 * 6/2013 Baldemair ............ H04L 5/0053
`
`
`PUSCH Resource Allocation," 3GPP TSG-RAN WGl Meeting
`370/318
`
`
`#54, Rl-083181, Jeju, Korea, Aug. 18-22, 2008 .
`
`
`8,634,358 B2 * 1/2014 Damnjanovic ....... H04L 1/1861
`in NTT DOCOMO, Inc., "UL Layered Control Sign al Structure
`
`
`
`370/329
`
`LTE-Advanced", 3GPP Draft RAN WGl Meeting #54bis;
`
`8,792,830 B2 * 7/2014 Lim ........................ H04L 25/02
`375/260
`
`
`
`
`Partnership RI-083679 UL Layered Control Sign al, 3rd Generation
`2002/0160784 Al* 10/2002 Kuwahara. H04W 28/26
`
`
`
`Project (3GPP), Mobile Competence Centre ; 650, Route Des
`455/452.1
`
`
`
`
`
`Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, vol. Ran
`
`2010/0003997 Al* 1/2010 Koyanagi ............. H04L 1/0003
`
`
`
`WGl, no. Prague, Czech Republic; Sep. 29, 2008-Oct. 3, 2008, Sep.
`455/450
`
`
`
`29, 2008 (Sep. 29, 2008), KP050597042, [retrieved on Sep. 24,
`
`2010/0098012 Al* 4/2010 Bala ........................ H04L 5/001
`2008].
`370/329
`TSG­ZTE (source), "ACK/NACK Design for LTE-Advanced,"
`
`
`
`2010/0208679 Al* 8/2010 Papasakellariou .... H04L 1/1614
`
`
`
`
`
`RANWGl #58bis, Rl-093821, Miyazaki, Japan, Oct. 12-16, 2009.
`370/329
`
`
`
`Infineon Technologies (source), "Clarification of UL DPCCH slot
`H04W 72/1289
`
`
`format information usage in IE 'DTX-DRX Information'," 3GPP
`370/329
`
`2010/0271970 Al* 10/2010 Pan ....................... H04L 1/0026
`
`
`
`TSG-RAN WG2 Meeting #65, Tdoc Rl-091165, Athens, Greece
`370/252
`Feb. 9-13, 2009 .
`
`2010/0285809 Al* 11/2010 Lindstrom .............. H04L 5/001
`NTT DocCoMo, Inc. (source), "UL ACK/NACK resource alloca­
`
`
`
`455/450
`
`
`tion for DL semi-persisent scheduling," 3GPP TSG RAN WG2 #62,
`2010/0296389 Al* 11/2010 Khandekar ........... H04L 5/0007
`
`
`Rl-082485 (resubmission of R2-081857), Kansas City, Missouri,
`370/216
`USA, May 5-9, 2008.
`H04W 76/048
`Huawei, PUCCH design for carrier aggregation, 3GPP TSG RAN
`
`
`
`
`370/329
`
`
`WGl Meeting #58 Rl-093046, 3GPP, Aug. 24, 2009 .
`
`
`2011/0007695 Al* 1/2011 Choi ..................... H04L 5/0007
`Texas Instruments: "Dynamic ACK/NAK Channelization on
`
`
`
`370/329
`
`
`PUCCH", 3GPP Draft; Rl-081375-DACKNAK, 3rd Generation
`
`2011/0007699 Al* 1/2011 Moon ................... H04L 5/0053
`
`
`
`
`Partnership Project (3GPP), Mobile Competence Centre; 650,
`370/329
`
`
`
`
`Route Des Lucioles; F-06921 Sophia-Antipolis Cedex; France, vol.
`
`2011/0081913 Al* 4/2011 Lee ......................... H04L 5/003
`
`RAN WGl, no. Shenzhen, China; Mar. 27, 2008, XP050109796.
`455/450
`
`
`2011/0081932 Al* 4/2011 Astely ..................... H04L 5/001
`
`* cited by examiner
`455/509
`
`H04W72/04
`
`
`
`
`
`H04W72/12
`
`H04W 8/24
`
`
`
`
`
`2013/0136084 Al* 5/2013 Zhang .
`
`
`
`OTHER PUBLICATIONS
`
`(56)
`
`
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`2010/0232373 Al* 9/2010 Nory.
`
`
`
`
`
`
`
`
`
`
`
`2010/0322173 Al* 12/2010 Marinier
`
`
`
`
`
`
`
`IPR2022-00648
`Apple EX1001 Page 2
`
`

`

`
`
`U.S. Patent Jan.2,2018 Sheet 1 of 12 US 9,860,044 B2
`
`·100
`
`FIG. 1
`
`IPR2022-00648
`Apple EX1001 Page 3
`
`

`

`
`
`U.S. Patent Jan.2,2018 Sheet 2 of 12 US 9,860,044 B2
`
`---! !-CON'fROL
`REGION
`........,...l""'""'r' -
`
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`FIG. 2
`
`IPR2022-00648
`Apple EX1001 Page 4
`
`

`

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`
`
`U.S. Patent Jan.2,2018 Sheet 3 of 12
`
`US 9,860,044 B2
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`IPR2022-00648
`Apple EX1001 Page 5
`
`

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`U.S. Patent Jan.2,2018
`
`US 9,860,044 B2
`
`Sheet 4 of 12
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`IPR2022-00648
`Apple EX1001 Page 6
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`IPR2022-00648
`Apple EX1001 Page 7
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`IPR2022-00648
`Apple EX1001 Page 8
`
`

`

`
`U.S. Patent
`
`Jan.2,2018 Sheet 7 of 12 US 9,860,044 B2
`
`J_
`
`T
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`
`IPR2022-00648
`Apple EX1001 Page 9
`
`

`

`
`
`
`U.S. Patent Jan.2,2018 Sheet 8 of 12
`
`US 9,860,044 B2
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`IPR2022-00648
`Apple EX1001 Page 10
`
`

`

`
`U.S. Patent
`Jan.2,2018 Sheet 9 of 12
`
`US 9,860,044 B2
`
`SCHEDULE DOWNLINK TRANSMISSIONS
`TO A USER TERMINAL ON ONE
`OR MORE DCCs
`
`54
`
`56
`
`IF USER TERMINAL IS SCHEDULED TO
`
`RECEIVE D0\/VNUNK TRANSM!SS!ONS
`ON SINGLE DCC WITH ASSOCIATED
`REL-8 RESOUHCES ON AN UL PCC,
`RECEIVE UPUNK CONTROL
`
`INFORMATION FROM THE USER
`TERMINAL ON A FIRST SET OF
`RADIO RESOURCES ON THE UL PCC
`
`RECEIVE DOWNLINK TRANSMISSIONS
`ON MULTf PLE DC.Cs, OR ON .A DCC
`OTHER THAN THE DCC WITH
`ASSOC IA TED REL�8 RESOURCES ON
`
`THE UL PCC, RECEIVE UPUNK CONTROL
`
`INFORMATION FROfvt THE USER
`TERMINAL ON .A SECOND SET OF RADIO
`RESOURCES ON THE UL PCC
`
`FIG� 9
`
`IPR2022-00648
`Apple EX1001 Page 11
`
`

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`HECE!VE R.ADI0
`
`\
`62-,,,
`
`,,--so
`
`ASSIGNED
`corvlP0f·.JENT
`
`�o'h
`
`�
`
`;
`!
`
`FIG� 10
`
`ASSOCIATED
`TRANSMIT CONTROL INF0Rfv1A.TI0N
`
`TRANSMISSION
`
`CARRIER
`R/\D!0 RESOURCES ON THE UPUNK
`ON A SECOND SET OF
`WITH THE D0VVNUNK
`
`PRIMARY COMPONENT
`
`CARRIER
`
`C0�v'lP0NENT
`
`PRIM/\RY
`
`!NF0Rf•.AAT!0N
`
`RADIO RESOURCES ON THE UPLINK
`TRANSMISSION
`ASSOCIATED
`VvlTH THE
`TRANSMlT CONTROL
`
`ON A FIRST SET OF
`
`DOVVNUNK
`
`ASSIGNED
`
`i
`64 --.....,,
`
`IPR2022-00648
`Apple EX1001 Page 12
`
`

`

`= ��
`
`=
`
`N
`=
`
`0--,
`00
`\0
`
`r.,;_
`d
`
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`
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`
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`....
`
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`00•
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`
`FIG* 11
`
`76
`
`L
`
`PRIMARY COMPONENT CARRIER
`RADIO RESOURCES ON THE UPLINK
`TRANSMISSION
`ON A SECOND SET OF
`WITH THE DOWNUNK
`ASSOCIATED
`IN FOR MA T!Ot'J
`TRANSMIT CONTROL
`
`�JENT CAR:RiER
`:S ON A UPUNK
`A FIRST SET OF
`THE DOVVNUNK
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`
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`RADIO RESOURC
`TRANSMISSION 0
`ASSOCl/\TED
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`TRANSMIT CONTR
`
`COMPONENT CARRJER COMPONENT CARRIER
`
`ASSIGNED
`ASSIGNED
`FIRST DOWNLINK i SECOND DOWNUNK
`
`74-,_
`
`70
`
`�
`
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`
`FROM BASE
`FOR DOWNUNK
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`
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`
`\
`"\
`
`72 -...__
`
`I
`
`IPR2022-00648
`Apple EX1001 Page 13
`
`

`

`
`U.S. Patent Jan.2,2018 Sheet 12 of 12
`
`US 9,860,044 B2
`
`32
`
`PROCESSING
`CIRCUITS
`
`34
`
`TRANSMIT
`CONTROLLER
`
`•
`t
`•
`t
`t
`t
`t
`t
`
`�.� �.�.� �,. � � .. �.� ···- --·-·••-.--.-· .. -· .. t
`
`
`
`FIG. 12
`
`120-
`
`PROCESSING
`CIRCUffS
`
`122-
`
`.................... �-... -� ... , 7
`
`''
`
`l
`l
`l
`
`TX
`
`SlGN/\UNG
`CONTROLLER
`
`RX
`
`FIG. 13
`
`IPR2022-00648
`Apple EX1001 Page 14
`
`

`

`
`
`US 9,860,044 B2
`
`1
`
`PUCCH RESOURCE ALLOCATION FOR
`
`
`
`CARRIER AGGREGATION IN
`
`LTE-ADVANCED
`
`2
`also create implementation issues due to inter-modulation
`
`
`
`
`
`
`products, and may lead to generally higher complexity for
`
`implementation and testing.
`
`RELATED APPLICATION
`
`SUMMARY
`
`
`
`TECHNICAL FIELD
`
`BACKGROUND
`
`The invention provides a signaling mechanism for effi­
`
`
`
`
`
`This application is a continuation of U.S. patent applica­
`
`
`
`tion Ser. No. 12/896,993, filed Oct.
`
`
`cient transmission 4, 2010, now U.S. Pat. of control information in a communica­
`
`No. 9,497,004, issued Nov. 15, 2016, claiming the benefit of
`
`
`
`
`
`
`
`tion system using carrier aggregation. The signaling mecha-
`
`
`
`
`lO nism allows the transmission, on a single uplink component
`
`U.S. Provisional Patent Application 61/248,661, filed Oct. 5,
`
`
`
`
`
`
`2009, all of which the contents are hereby incorporated by
`
`
`
`
`carrier, of control information associated with downlink
`
`reference as if fully set forth below.
`
`
`
`
`transmissions on multiple aggregated downlink component
`
`
`
`
`
`carriers. Semi-statically reserved resources for the transmis-
`
`
`
`
`
`sion of control information on the uplink component carrier
`15
`
`
`
`may be dynamically shared by user terminals that are
`
`
`
`
`
`The present invention relates generally to carrier aggre­
`
`
`
`
`
`assigned multiple downlink component carriers for down­
`
`
`
`gation in a mobile communication system and, more par­
`
`
`
`
`link transmissions. Implicit or explicit resource indication
`
`
`
`
`ticularly, to an efficient resource allocation for the physical
`
`
`
`
`can be used in combination with dynamic resource indica-
`
`
`
`
`uplink control channel for carrier aggregation.
`20 tion.
`One exemplary embodiment of the invention comprises a
`
`
`
`
`
`
`
`method implemented by a base station of receiving control
`
`
`
`information from user terminals. The method comprises
`
`
`
`
`Carrier aggregation is one of the new features being
`
`
`
`
`scheduling downlink transmissions to said user terminal on
`
`
`
`discussed for the next generation of Long Term Evolution
`(LTE) systems, which is being standardized as part of LTE
`
`
`
`
`
`25 one or more downlink component carriers; if the user
`Release 10 (known as LTE-Advanced). LTE Rel 8 currently
`
`
`
`
`
`
`terminal is scheduled to receive downlink transmissions on
`supports bandwidths up to 20 MHz. In LTE-Advanced,
`
`
`
`
`
`
`a first single downlink component carrier, receiving control
`
`
`
`bandwidths up to 100 MHz will be supported. The very high
`
`
`
`
`information associated with the downlink transmissions to
`
`
`
`data rates contemplated for LTE-Advanced will require an
`
`
`the user terminal on a first set of radio resources on a uplink
`
`
`
`expansion of the transmission bandwidth. In order to main-30
`
`
`
`
`
`primary component carrier associated with said first down­
`
`
`tain backward compatibility with LTE Rel-8 user terminals,
`
`
`
`link component carrier; and if the user terminal is scheduled
`
`
`
`the available spectrum is divided into Rel-8 compatible
`
`
`
`to receive downlink transmissions on a second single down­
`chunks called component carriers. Carrier aggregation
`
`
`
`
`
`
`link component carrier or multiple downlink component
`enables the needed bandwidth expansion by allowing user
`
`
`
`
`
`
`
`
`carriers, receiving control information associated with the
`
`terminals to transmit data over multiple component carriers
`
`
`
`35
`
`
`
`
`downlink transmissions to the user terminal on a second set
`comprising up to 100 MHz of spectrum. Carrier aggregation
`
`
`
`
`
`
`
`of radio resources on the uplink primary component carrier.
`also ensures efficient use of a wide carrier for legacy
`
`
`
`
`Another exemplary embodiment of the invention com­
`
`terminals by making it possible for legacy terminals to be
`
`
`
`
`
`
`
`
`prises a base station for transmitting data to one or more user
`
`scheduled in all parts of the wideband LTE-Advanced ear­
`
`
`
`
`
`
`
`to trans­comprises a transmitter 40 terminals. The base station
`ner.
`
`
`mit user data on one or more downlink component carriers
`
`
`The number of aggregated component carriers, as well as
`
`
`
`
`to a user terminal; and a controller to schedule downlink
`the bandwidth of the individual component carrier, may be
`
`
`
`
`
`
`
`
`
`transmissions to the user terminal. The controller is config­
`different for Uplink (UL) and Downlink (DL). A symmetric
`
`
`
`
`
`
`
`ured to schedule downlink transmissions to the user terminal
`
`
`configuration refers to the case where the number of com­
`
`
`
`45 on one or more downlink component carriers; if the user
`
`
`
`ponent carriers in downlink and uplink is the same. An
`
`
`
`
`
`terminal is scheduled to receive downlink transmissions on
`
`
`
`
`asymmetric configuration refers to the case where the num­
`
`
`
`ber of component carriers is different. The number of
`
`
`
`
`
`a first single downlink component carrier, receive control
`
`
`
`cell area component carriers configu red for a geographic
`
`
`
`
`information associated with the downlink transmissions to
`
`
`may be different from the number of component carriers
`
`
`the user terminal on a first set of radio resources on a uplink
`
`
`
`seen by a terminal. A user terminal, for example, may 50
`
`
`
`
`
`primary component carrier associated with said first down­
`
`
`
`
`support more downlink component carriers than uplink
`
`
`
`link component carrier; and, if the user terminal is scheduled
`
`
`
`
`component carriers, even though in the geographic cell area
`
`
`
`to receive downlink transmissions on a second single down­
`
`
`
`the same number of uplink and downlink component carriers
`
`
`
`
`link component carrier or multiple downlink component
`is offered by the network.
`
`
`
`carriers, receive control information associated with the
`
`
`
`One consideration for carrier aggregation is how to trans-55
`
`
`
`
`downlink transmissions to the user terminal on a second set
`
`
`mit control signaling from the user terminal on the uplink
`
`
`
`
`
`of radio resources on the uplink primary component carrier.
`
`
`
`
`
`from the user terminal. Uplink control signaling may include
`
`
`Another exemplary embodiment of the invention com­
`
`
`hybrid automatic acknowledgement (ACK) sign aling for
`
`
`
`
`prises a method of transmitting control information imple­
`
`
`
`
`repeat request (HARQ) protocols, channel state and quality
`
`mented by a user terminal in a mobile communication
`
`
`information (CSI, CQI) reporting for downlink scheduling,
`
`
`
`
`network. The method comprises receiving an assignm ent of
`60
`
`
`
`and scheduling requests (SRs) indicating that the user ter­
`
`
`
`radio resources for downlink transmissions from a base
`
`
`
`minal needs uplink resources for uplink data transmissions.
`
`
`
`
`station; transmitting control information associated with the
`
`
`
`
`
`One solution is to transmit the uplink control information on
`
`
`
`
`
`downlink transmissions on a first set of radio resources on an
`
`
`
`
`
`multiple uplink component carriers associated with different
`
`
`
`
`
`
`single down­uplink component carrier if an assignm ent of
`
`
`
`downlink component carriers. However, this option is likely
`
`
`
`
`
`link component carrier for the downlink transmission is
`65
`
`
`
`
`to result in higher user terminal power consumption and a
`
`
`
`
`received; and transmitting control information associated
`
`
`dependency on specific user terminal capabilities. It may
`
`
`
`with the downlink transmissions on a second set of radio
`
`IPR2022-00648
`Apple EX1001 Page 15
`
`

`

`
`
`US 9,860,044 B2
`
`3
`
`4
`
`DETAILED DESCRIPTION
`
`resources on the uplink component carrier if an assignment
`
`
`
`
`by a FIG. 9 illustrates an exemplary method implemented
`
`
`
`
`
`of multiple downlink component carriers for the downlink
`
`
`
`
`base station of receiving control information from user
`
`transmission is received.
`
`
`
`
`
`terminals scheduled on a single carrier and multiple carriers.
`com­of the invention Another exemplary embodiment
`
`
`
`
`
`
`
`FIG. 10 illustrates an exemplary method implemented by
`
`
`
`
`prises a user terminal configured to send control information
`
`
`
`
`5 a user terminal of signaling control information to a base
`
`
`
`associated with downlink transmissions on one or more
`station.
`
`
`
`
`downlink component carriers. The user terminal comprises
`FIG. 11 illustrates another exemplary method imple­
`
`
`
`
`
`
`
`a receiver to receive downlink transmissions from a base
`
`
`
`mented by a user terminal of signaling control information
`
`
`
`
`
`station; a transmitter to transmit control information asso­
`to a base station.
`
`
`
`ciated with the downlink transmission to a base station; and 10
`FIG. 12 illustrates an exemplary base station with a
`
`
`
`
`
`
`
`a controller to select radio resources for transmission of
`
`
`
`controller for controlling downlink transmissions by the
`
`
`
`
`control information associated with the downlink transmis­
`
`
`base station to one or more user terminals and associated
`
`
`
`
`sions. The controller is configured to select a first set of radio
`
`
`
`transmissions of uplink control information by the user
`
`
`
`
`resources on an uplink component carrier if an assignment
`terminals
`
`
`
`
`
`of a single downlink component carrier for the downlink
`with a FIG. 13 illustrates an exemplary user terminal
`
`
`15
`
`
`
`transmission is received; and select a second set of radio
`
`
`
`controller for controlling transmission of uplink control
`
`
`
`
`resources on the uplink component carrier if an assignment
`
`information to a base station.
`
`
`
`
`of multiple downlink component carriers for the downlink
`
`transmission is received.
`com-20 of the invention Another exemplary embodiment
`
`
`
`
`Referring now to the drawings, FIG. 1 illustrates an
`
`
`
`
`
`
`
`prises an alternate method of transmitting control informa­
`
`
`
`
`exemplary mobile communication network 10 for providing
`
`
`tion implemented by a user terminal in a mobile communi­
`
`
`
`
`wireless communication services to user terminals 100.
`
`
`
`cation network. The method comprises receiving an
`
`Three user terminals 100 are shown in FIG. 1. The user
`
`
`
`assignment of radio resources for a downlink transmissions
`
`
`
`
`terminals 100 may comprise, for example, cellular tele­
`
`
`
`from a base station; transmitting control information asso-25
`
`
`
`
`
`phones, personal digital assistants, smart phones, laptop
`
`
`
`
`ciated with the downlink transmission on a first set of radio
`
`
`
`
`computers, handheld computers, or other devices with wire­
`
`
`
`
`resources on an uplink component carrier if an assignment
`
`
`less communication capabilities. The mobile communica­
`of a first downlink component carrier for the downlink
`
`
`
`
`
`
`
`tion network 10 comprises a plurality of geographic cell
`transmission is received; and transmitting control informa­
`
`
`
`
`
`
`
`30 areas or sectors 12. Each geographic cell area or sector 12
`
`tion associated with the downlink transmission on a second
`
`
`
`
`
`is served by a base station 20, which is referred to in LTE as
`
`
`
`
`set of radio resources on the uplink component carrier if an
`
`a NodeB or Enhanced NodeB (eNodeB). A single base
`
`
`
`
`assignment of a second downlink component carrier for the
`
`
`
`
`
`station 20 may provide service in multiple geographic cell
`
`
`downlink transmission is received.
`
`
`
`areas or sectors 12. The user terminals 100 receive signals
`
`
`
`
`com­of the invention Another exemplary embodiment
`
`
`
`35 from a serving base station 20 on one or more downlink
`
`
`
`
`prises a user terminal configured to send control information
`
`
`
`
`
`(DL) charmels, and transmit signals to the base station 20 on
`
`
`
`associated with downlink transmissions on one or more
`
`one or more uplink (UL) channels.
`
`
`
`
`downlink component carriers. The user terminal comprises
`For illustrative purposes, of an exemplary embodiment
`
`
`
`
`
`
`a receiver to receive downlink transmissions from a base
`
`
`
`
`the present invention will be described in the context of a
`
`
`
`
`
`station; a transmitter to transmit control information asso­
`
`
`
`
`40 L ong-Term Evolution (LTE) system. Those skilled in the art
`
`
`
`ciated with the downlink transmission to a base station; and
`
`
`
`
`will appreciate, however, that the present invention is more
`
`
`
`
`a controller to select radio resources for transmission of
`
`
`
`
`generally applicable to other wireless communication sys­
`
`
`
`
`control information associated with the downlink transmis­
`
`
`
`tems, including Wideband Code-Division Multiple Access
`
`
`
`
`sion. The controller is configured to select a first set of radio
`
`(WCDMA) and WiMax (IEEE 802.16) systems.
`
`
`
`
`resources on an uplink component carrier if an assignment
`
`
`
`LTE uses Orthogonal Frequency Division Multiplexing
`
`
`
`of a first downlink component carrier for the downlink
`45
`
`
`(OFDM) in the downlink and Discrete Fourier Transform
`
`
`
`transmission is received; and select a second set of radio
`
`
`(DFT) spread OFDM in the uplink. The basic LTE downlink
`
`
`
`
`resources on the uplink component carrier if an assignment
`
`
`physical resource can be viewed as a time-frequency grid.
`
`
`of a second downlink component carrier for the downlink
`
`
`FIG. 2 illustrates a portion of an exemplary OFDM time-
`
`transmission is received.
`
`
`
`
`50 frequency grid 50 for LTE. Generally speaking, the time­
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`
`
`frequency grid 50 is divided into one millisecond subframes.
`
`
`Each subframe includes a number ofOFDM symbols. For a
`
`FIG. 1 illustrates an exemplary OFDM communication
`
`
`
`
`normal cyclic prefix (CP) length, suitable for use in situa­
`system.
`
`
`
`tions where multipath dispersion is not expected to be
`
`
`
`grid for an FIG. 2 illustrates an exemplary time-frequency
`
`
`
`
`55 extremely severe, a subframe comprises fourteen OFDM
`OFDM system.
`
`
`
`
`symbols. A subframe comprises twelve OFDM symbols if
`
`
`
`structure for FIG. 3 illustrates an exemplary time-domain
`
`
`
`
`an extended cyclic prefix is used. In the frequency domain,
`an OFDM system.
`
`
`
`
`the physical resources are divided into adjacent subcarriers
`
`
`
`
`FIG. 4 illustrates uplink Ll/L2 control signaling trans­
`
`
`with a spacing of 15 kHz. The number of subcarriers varies
`
`mission on PUCCH.
`
`
`
`60 according to the allocated system bandwidth. The smallest
`
`FIG. 5 illustrates the PUCCH format 1 using a normal
`
`
`
`element of the time-frequency grid 50 is a resource element.
`cyclic prefix.
`
`
`
`
`
`A resource element comprises one OFDM subcarrier during
`
`FIG. 6 illustrates the PUCCH format 2 using a normal
`
`one OFDM symbol interval.
`cyclic prefix.
`
`
`In LTE systems, data is transmitted to the user terminals
`
`
`
`FIG. 7 illustrates an exemplary allocation of resource
`
`
`65 over a downlink transport channel known as the Physical
`
`blocks for PUCCH.
`
`
`
`Downlink Shared Channel (PDSCH). The PDSCH is a time
`
`
`
`FIG. 8 illustrates the concept of carrier aggregation.
`
`
`
`
`and frequency multiplexed channel shared by a plurality of
`
`
`
`IPR2022-00648
`Apple EX1001 Page 16
`
`

`

`
`
`US 9,860,044 B2
`
`5
`
`6
`
`user terminals. As shown in FIG. 3, the downlink transmis­at the lower part of the spectrum during the second slot of
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`sions are organized into 10 ms radio frames. Each radio the subframe, or vice versa. If more resources are needed for
`
`
`
`
`
`
`frame comprises ten equally-sized subframes. For purposes the uplink Ll/L2 control case of very large sign aling, e.g., in
`
`
`
`
`of scheduling users to receive downlink
`
`
`
`
`overall transmissions, the transmission bandwidth supporting a large number
`
`downlink time-frequency resources are allocated in units
`
`
`
`
`
`
`
`
`5 of users, additional resources blocks can be assigned adja­
`
`
`
`called resource blocks (RBs). Each resource block spans
`
`
`
`cent the previously assigned resource blocks.
`
`
`twelve subcarriers (which may be adjacent or distributed
`
`
`
`
`The reasons for locating the PUCCH resources at the
`
`
`
`
`
`across the frequency spectrum) and one 0.5 ms slot ( one half
`
`
`
`
`edges of the overall available spectrum are two-fold. First,
`
`
`
`
`of one subframe). The term "resource
`
`
`
`the allocation maximizes the block pair" refers to frequency diversity, particu-
`
`
`
`
`
`two consecutive resource blocks occupying an entire one 10 larly when frequency hopping is employed. Second, the
`
`
`
`
`
`millisecond subframe.
`
`
`
`allocation avoids fragmentation of the uplink spectrum,
`
`
`
`The base station
`
`
`which would 20 dynamically schedules downlink make it impossible to assign very wide trans­
`
`
`transmissions to the user terminals
`
`mission bandwidths to a single based on channel state user terminal 100 and still
`
`
`
`
`and quality information (CSI, CQI) reports from the user
`
`
`
`
`
`
`
`retain the single-carrier property of the uplink transmission.
`
`
`
`
`
`
`terminals on the Physical Uplink Control Channel (PUCCH) 15
`
`
`The bandwidth of one resource block during one sub-
`
`
`
`
`or Physical Uplink Shared Channel (PUSCH). The CQI and
`
`
`frame is too large for the control signaling needs of a single
`
`
`
`
`CSI reports indicate the instantaneous channel conditions as
`
`
`
`
`user terminal 100. Therefore, to efficiently exploit the
`
`
`
`seen by the receiver. In each subframe, the base station 20
`
`
`
`
`resources set aside for control signaling, multiple user
`
`
`
`
`transmits downlink control information (DCI) identifying
`
`
`
`
`
`terminals can share the same resource block. This is done by
`
`
`
`
`
`20 assigning the different terminals different orthogonal phase
`
`
`
`the user terminals that have been scheduled to receive data
`
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`rotations of a cell-specific length-12 frequency-domain
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`(hereinafter the scheduled terminals) in the current downlink
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`sequence. A linear phase rotation in the frequency domain is
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`subframe and the resource blocks on which the data is being
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`equivalent to applying a cyclic shift in the time domain.
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`transmitted to the scheduled terminals. The DCI is typically
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`Thus, although the term "phase rotation" is used herein, the
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`transmitted on the Physical Downlink Control Channel
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`25 term cyclic shift is sometimes used with an implicit refer­
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`(PDCCH) in the first 1, 2, or 3 OFDM symbols in each
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`ence to the time domain.
`subframe.
`The resource used by a PUCCH is therefore not only
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`Hybrid Automatic Repeat Request (HARQ) is used to
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`specified occur during transmission of data on the in the time-frequency domain by the resource­
`mitigate errors that
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`downlink. When the base station 20 indicates
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`block pair, but also by the phase rotation that a user applied. Similarly
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`to twelve 30 to the case of reference sign als, there are up
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`terminal 100 is scheduled to receive a transmission on the
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`different phase rotations specified in the LTE standard,
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`PDSCH, the user terminal 100 decodes t