`(19)United States
`
`
`02)Patent Application Publication
`(10)Pub. No.: US 2010/0098012 Al
`
`(43)Pub. Date: Apr. 22, 2010
`Bala et al.
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`1111111111111111 IIIIII IIIII 1111111111 1111111111 111111111111111 1111111111 1111111111 11111111
`
`
`
`
`
`US 20100098012Al
`
`(54)UPLINK CONTROL INFORMATION
`
`TRANSMISSION METHODS FOR CARRIER
`AGGREGATION
`
`(22)Filed:
`
`Oct. 20, 2009
`
`
`
`
`
`Related U.S. Application Data
`
`filed on Oct.(60)Provisional application No. 61/106,847,
`
`
`
`NY
`(75)Inventors:Erdem Bala, Farmingdale,
`
`
`
`20, 2008, provisional application No. 61/115,351,
`
`(US); Philip J. Pietraski,
`
`
`filed on Nov. 17, 2008, provisional application No.
`
`Huntington Station, NY (US);
`
`
`61/172,127, filed on Apr. 23, 2009, provisional appli­
`
`
`Sung-Hyuk Shiu, Northvale, NJ
`
`
`
`cation No. 61/218,782, filed on Jun. 19, 2009.
`(US); Guodong Zhang, Syosset,
`NY (US); Allan Y. Tsai, Boonton,
`NJ (US); Joseph S. Levy, Merrick,
`(51)Int.Cl.
`NY (US); Pascal M. Adjakple,
`H04W 72104 (2009.01)
`Great Neck, NY (US); John W.
`
`Halm, Baldwin, NY (US); Robert
`
`. ................ 370/329
`(52)U.S. Cl. ........... .....
`
`
`L. Olesen, Huntington, NY (US);
`(57)
`
`Kyle Jung-Lin Pan, Smithtown,
`NY(US)
`
`
`
`Publication Classification
`
`ABSTRACT
`
`A method and apparatus for transmitting uplink control infor­
`
`
`
`
`
`
`mation (UC!) for Long Term Evolution-Advanced (LTE-A)
`Correspondence Address:
`
`
`
`
`
`using carrier aggregation is disclosed. Methods for UC] trans­
`VOLPE AND KOENIG, P.C.
`
`
`
`
`
`
`mission in the uplink control channel, uplink shared channel
`DEPT. ICC
`
`
`
`
`or uplink data channel are disclosed. The methods include
`UNITED PLAZA, SUITE 1600, 30 SOUTH 17TH
`
`
`transmitting channel quality indicators (CQJ), precoding
`STREET
`
`
`
`
`matrix indicators (Pfvil), rank indicators (Rl), hybrid auto­
`
`
`matic repeat request (HARQ) acknowledgement/non-ac­
`
`
`
`
`
`knowledgement (ACK/NACK), channel status reports (CQI/
`INTERDIGITAL PATENT
`
`(73)Assignee:
`
`
`
`
`
`PW/Rl), source routing (SR) and sounding reference signals
`
`HOLDINGS, INC., Wilmington,
`
`
`
`
`
`(SRS). ln addition, methods for providing flexible configura­
`DE(US)
`
`
`
`tion in signaling UCJ, efficient resource utilization, and sup­
`
`port for high vohune UC! overhead in LTE-A are disclosed.
`
`PHILADELPHIA, PA 19103 (US)
`
`(21)Appl. No.:
`
`12/582,462
`
`PUCCH�
`
`UCI reporting for non­
`
`anchor cell(s)
`
`UCI reporting for non­
`
`anchor cell(s)
`14-----------11.5 rnsec sloti----------+1
`
`IPR2022-00648
`Apple EX1014 Page 1
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`

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`Patent Application Publication Apr. 22, 2010 Sheet 1 of 7
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`IPR2022-00648
`Apple EX1014 Page 3
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`

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`Patent Application Publication Apr. 22, 2010 Sheet 3 of 7
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`IPR2022-00648
`Apple EX1014 Page 4
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`

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`Patent Application Publication Apr. 22, 2010 Sheet 4 of 7
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`US 2010/0098012 Al
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`II
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`IPR2022-00648
`Apple EX1014 Page 5
`
`

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`Figure 5
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`IPR2022-00648
`Apple EX1014 Page 6
`
`

`

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`
`Patent Application Publication
`
`Apr. 22, 2010 Sheet 6 of 7
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`IPR2022-00648
`Apple EX1014 Page 7
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`PatentApplicatioo Publication
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`Apr. 22, 2010 Sheet 7 of 7
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`US 2010/0098012 Al
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`IPR2022-00648
`Apple EX1014 Page 8
`
`

`

`
`
`US 2010/0098012 Al
`
`Apr. 22, 2010
`
`1
`
`UPLINK CONTROL INFORMATION
`
`TRANSMISSION METHODS FOR CARRIER
`AGGREGATION
`
`CROSS REFERENCE TO RELATED
`APPLICATIONS
`
`FIELD OF INVENTION
`
`physical uplink control channel (PUCCH) transmissions
`
`
`
`need to have a low PAPR or CM.
`[0007] In LTE-A, it is anticipated that the UCI overhead
`
`
`
`
`
`
`may be increased, compared to LTE, taking into account the
`
`
`
`new features including coordinated multipoint transmission
`
`
`
`(CoMP), higher order DL multiple-input multiple-output
`
`
`
`(MIMO), bandwidth extension, and relay. For example, in
`[0001] This application claims the benefit of U.S. provi­
`
`
`
`
`order to support high order MIMO (8x8 MIMO) and/or
`
`
`
`sional application Nos. 61/106,847 filed Oct. 20, 2008;
`
`
`
`CoMP, a large amount of channel status reports (CQI/PMI/
`
`
`61/115,351 filed Nov. 17, 2008; 61/172,127 filed Apr. 23,
`
`
`
`RI) are fed back to the serving base station and possibly
`
`
`2009; and 61/218,782 filed Jun. 19, 2009, all of which are
`
`
`
`neighboring base stations as well in Co MP. The UCI overhead
`
`
`incorporated by reference as if fully set forth.
`
`
`
`
`will be further increased in asymmetric bandwidth extension.
`
`
`
`Accordingly, the payload size of Release 8 LTE PUCCH may
`
`
`
`not be sufficient to carry the increased UCI overhead even for
`[0002] This application is related to wireless communica­
`
`
`
`a single DL component carrier in LTE-A. Therefore new
`
`
`methods are needed to carry UCI in a LTE-A carrier aggre­
`
`gation system.
`
`
`
`
`
`
`tions.
`
`BACKGROUND
`
`SUMMARY
`
`[0003] Long Term Evolution (LTE) supports data rates up
`
`
`
`
`
`
`to 100 Mbps in the downlink and 50 Mbps in the uplink.
`[0008] A method and apparatus for transmitting uplink
`
`
`
`
`
`
`LTE-Advanced (LTE-A) provides a fivefold improvement in
`
`
`control information (UCI) for Long Term Evolution-Ad­
`
`
`
`
`downlink data rates relative to LTE using, among other tech­
`
`
`
`vanced (LTE-A) using carrier aggregation is disclosed. Meth­
`
`
`
`niques, carrier aggregation. Carrier aggregation may support,
`
`
`
`
`
`ods for UCI transmission in the uplink control channel, uplink
`
`
`
`
`for example, flexible bandwidth assignments up to 100 MHz.
`
`
`
`
`
`shared channel or uplink data channel are disclosed. The
`
`
`Carriers are known as component carriers in LTE-A.
`
`
`
`
`
`methods include transmitting channel quality indicators
`
`
`[0004] LTE-A may operate in symmetric and asymmetric
`
`
`
`(CQI), precoding matrix indicators (PMI), rank indicators
`
`
`
`
`configurations with respect to component carrier size and the
`
`
`
`
`(RI), hybrid automatic repeat request (HARQ) acknowledge­
`
`
`
`
`
`number of component carriers. This is supported through the
`
`
`
`ment/non-acknowledgement (ACK/NACK), channel status
`
`use or aggregation ofup to five 20 MHz component carriers.
`
`
`
`
`reports (CQI/PMI/RI), source routing (SR) and sounding ref­
`
`
`
`(DL) 40 MHz For example, a single contigu ous downlink
`
`
`
`erence signals (SRS). In addition, methods for providing
`
`
`
`
`LTE-A aggregation of multiple component carriers may be
`
`
`
`resource flexible configuration in sign aling UCI, efficient
`
`
`
`paired with a single 15 MHz uplink (UL) carrier. Non-con­
`
`
`
`utilization, and support for high volume UCI overhead in
`
`
`
`tiguous LTE-A DL aggregate carrier assignm ents may there­
`LTE-A is disclosed.
`
`
`fore not correspond with the UL aggregate carrier assign­
`[0009] Methods are also disclosed for using, configuring
`
`
`
`ment.
`
`
`
`
`and multiplexing of a periodic uplink data channel to handle
`
`
`[0005] Aggregate carrier bandwidth may be contiguous
`
`
`
`
`high volume variable size wireless transmit/receive unit
`
`
`
`
`where multiple adjacent component carriers may occupy con­
`
`
`
`(WTRU) feedback due to bandwidth extension in cases of
`
`
`
`
`tinuous 10, 40 or 60 MHz. Aggregate carrier bandwidth may
`
`
`
`multi-carriers, higher order multiple-input multiple-output
`
`
`
`
`carrier may be one aggregate also be non-contigu ous where
`
`
`
`
`(MIMO), coordinated multi-point transmission and reception
`
`
`
`built from more than one, but not necessarily adjacent com­
`
`
`
`(CoMP), frequency selectivity, and other scenarios where
`
`
`
`
`ponent carriers. For example, a first DL component carrier of
`
`
`WTRU feedback information is large and may not use con­
`
`
`15 MHz may be aggregated with a second non-adjacent DL
`
`
`
`
`ventional periodic uplink control channels. The periodic
`
`
`
`
`
`component carrier of 10 MHz, yielding an overall 25 MHz
`
`
`
`
`uplink data channels carry high volume variable size WTRU
`
`
`
`
`aggregate bandwidth for LTE-A. Moreover, component car­
`
`
`
`
`feedback information, such as precoding matrix indicator
`
`
`
`
`riers may be situated at varying pairing distances. For
`
`
`
`
`
`(PMI), rank indication (RI), channel quality indicator (CQI),
`
`
`
`
`example, the 15 and 10 MHz component carriers may be
`
`
`
`Acknowledge/Not Acknowledge (ACK/NACK), channel
`
`
`
`
`separated by 30 MHz, or in another setting, by only 20 MHz.
`
`
`
`
`uplink of periodic state information (CSI) etc. Configu ration
`
`
`As such, the number, size and continuity of component car­
`
`
`
`
`data channel, reporting mode, reporting format, is also pro­
`
`
`
`riers may be different in the UL and DL.
`
`
`
`
`
`vided. Procedures to handle collisions between hybrid auto­
`
`
`
`[0006] As more than one component carrier may be used to
`
`
`
`matic repeat request (HARQ)-ACK and SR with multiplex
`
`
`
`
`support larger transmission bandwidths in LTE-A, a wireless
`
`
`
`
`
`periodic uplink data channel ( control) and other uplink data
`
`
`transmit/receive unit (WTRU) may be required to feedback
`
`
`
`channel (data) in the same subframe are disclosed.
`
`
`
`uplink control information (UCI) such as for example, chan­
`
`
`
`nel quality indicators (CQI), precoding matrix indicators
`
`
`
`
`
`
`(PMI), rank indicators (RI), hybrid automatic repeat request
`[001 OJ A more detailed understanding may be had from the
`
`
`
`
`(HARQ), acknowledgement/non-acknowledgement (ACK/
`
`
`
`following description, given by way of example in conjunc­
`
`
`
`
`NACK), channel status reports (CQI/PMI/RI), and source
`
`
`tion with the accompanying drawings wherein:
`
`
`
`
`routing (SR) associated with downlink transmission for sev­
`
`
`
`[0011] FIG. 1 is an embodiment of a wireless communica­
`
`
`eral component carriers. This means that the number of bits
`
`
`
`tion system/access network oflong term evolution (LTE);
`
`
`
`for UCI is increased compared to LTE. In addition, for uplink
`
`
`[0012] FIG. 2 are example block diagrams of a wireless
`
`
`transmissions, the Peak to Average Power Ratio (PAPR) or
`
`
`transmit/receive unit (WTRU) and a base station of an LTE
`
`
`
`Cubic Metric (CM) property needs to be considered. A large
`
`wireless communication system;
`
`PAPR would cause the WTRU to back-off the power which
`
`
`
`would result in performance degradation. Accordingly,
`
`
`[0013] FIG. 3 shows example resource block allocations;
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`IPR2022-00648
`Apple EX1014 Page 9
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`
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`US 2010/0098012 Al
`
`Apr. 22, 2010
`
`2
`
`
`
`Way (MME/S-GW) 130 which includes a processor 233 with
`
`DETAILED DESCRIPTION
`
`[0014] FIG. 4 shows an example of frequency multiplexing
`
`
`
`
`
`of control data;
`
`
`an optional linked memory 234.
`
`
`[0015] FIG. 5 shows an example of code division multi­
`[0023] Methods for transmitting uplink control informa­
`
`
`
`
`
`
`plexing based acknowledgement/non-acknowledgement
`
`
`tion (UCI) for L ong Term Evolution-Advanced (LTE-A)
`
`
`
`transmission in asymmetric carrier aggregation;
`
`
`
`using carrier aggregation are disclosed. An example method
`
`
`[ 0016] FIG. 6 shows an example of frequency division mul­
`
`
`
`using an uplink control channel such as a physical uplink
`
`
`
`
`tiplexing based on uplink control information (UCI) trans­
`
`
`
`
`control channel (PUCCH) is disclosed. UCI may include
`
`
`
`
`
`mission using multiple physical uplink channel (PUCCH)
`
`
`
`
`
`channel quality indicators (CQI), precoding matrix indicators
`
`
`resource blocks; and
`
`
`
`
`
`(PMI), rank indicators (RI), hybrid automatic repeat request
`
`
`[0017] FIG. 7 shows an example of transmitting high vol­
`
`
`
`(HARQ), acknowledgement (ACK/NACK), channel status
`
`
`
`ume UCI on both the PUCCH and physical uplink shared
`
`
`
`
`
`reports (CQI/PMI/RI), source routing (SR) and sounding ref­
`
`
`channel (PUSCH) from a WTRU in downlink coordinated
`
`
`erence signals (SRS).
`
`
`multi-point transmission and reception.
`[0024] Methods are also disclosed for providing flexible
`
`
`
`
`
`
`utilization, resource configu ration in signaling UCI, efficient
`
`
`
`and support for high volume UCI overhead in LTE-A with
`
`respect to the PUCCH.
`
`
`
`[0018] When referred to hereafter, the terminology "wire­
`[0025] In an embodiment for mapping of CQI, PMI and RI
`
`
`
`less transmit/receive unit (WTRU)" includes but is not lim­
`
`
`
`
`
`to physical resource elements in carrier aggregation, the
`
`
`
`ited to a user equipment (UE), a mobile station, a fixed or
`
`
`
`PUCCH that carries the CQI (and any other possible control
`
`
`
`
`mobile subscriber unit, a pager, a cellular telephone, a per­
`
`
`
`
`
`information such as scheduling request, ACK/NACK, etc.) is
`
`
`
`
`sonal digital assistant (PDA), a computer, or any other type of
`
`
`
`
`transmitted on one uplink component carrier. This WTRU­
`
`
`
`user device capable of operating in a wireless environment.
`
`
`
`
`
`specific uplink component carrier which carries the PUCCH
`
`
`
`When referred to hereafter, the terminology "base station"
`
`
`
`may be configured by the eNodeB and signaled to the WTRU
`
`
`
`
`includes but is not limited to a Node-B, a site controller, an
`
`
`with higher layer sign aling, for example RRC sign aling.
`
`
`
`
`access point (AP), or any other type of interfacing device
`
`
`
`
`Alternatively, this uplink component carrier may be signaled
`
`
`
`capable of operating in a wireless environment.
`
`
`
`by the eNodeB with L1 signaling. Alternatively, this uplink
`
`[0019] FIG.1 shows a L ong Term Evolution (LTE) wireless
`
`
`
`
`component carrier may be predetermined by an implicit map­
`
`
`communication system/access network 100 that includes an
`
`
`
`
`
`ping rule. Alternatively, this uplink component carrier may be
`
`Evolved-Universal Terrestrial Radio Access Network (E-UT­
`
`
`selected by the WTRU.
`
`RAN) 105. The E-UTRAN 105 includes a WTRU 110 and
`[0026] In an example method for transmission over one
`
`
`
`
`
`
`several base stations, such as evolved Node-Bs, (eNBs) 120.
`
`
`
`
`
`uplink component carrier, the mapping of control data or
`
`
`The WTRU 110 is in communication with an eNB 120. The
`
`
`
`
`control information to physical resource elements in carrier
`
`
`eNBs 120 interface with each other using an X2 interface.
`
`
`
`
`
`aggregation may comprise joint coding of the control data for
`
`
`Each of the eNBs 120 interface with a Mobility Management
`
`
`
`
`downlink (DL) component carriers. For example, the CQI
`
`
`
`Entity (MME)/Serving Gate Way (S-GW) 130 through an Sl
`
`
`
`
`
`corresponding to several downlink component carriers may
`
`
`
`
`interface. Although a single WTRU 110 and three eNBs 120
`
`
`
`
`be jointly coded. The terms control data and control informa­
`
`
`
`are shown in FIG. 1, it should be apparent that any combina­
`
`
`tion are used interchangeably throughout.
`
`
`
`tion of wireless and wired devices may be included in the
`
`
`
`wireless communication system access network 100.
`
`
`
`[0027] The control data bits may be modulated and then
`
`
`[0020] FIG. 2 is an exemplary block diagram of an LTE
`
`
`each modulated symbol may be spread with a sequence, for
`
`
`wireless communication system 200 including the WTRU
`
`
`
`example, a constant amplitude zero autocorrelation
`110, the eNB 120, and the MME/S-GW 130. As shown in
`
`
`
`(CAZAC) sequence like a Zadoff-Chu sequence. The length
`
`FIG. 2, the WTRU 110, the eNB 120 and the MME/S-GW
`
`
`
`
`
`of the spreading sequence, denoted by N, may be equal to the
`
`
`130 are configu red to perform uplink control information
`
`
`
`
`
`length of the subcarriers allocated for PUCCH transmission.
`
`
`
`In LTE, N= 12 corresponds to the number of subcarriers in one
`
`
`
`transmission methods for carrier aggregation.
`
`
`
`resource block. PUCCHs of different WTRUs may use the
`
`
`[0021] In addition to the components that may be found in
`
`
`
`
`
`spreading sequence with different cyclic shifts to maintain the
`
`
`
`a typical WTRU, the WTRU 110 includes a processor 216
`
`
`
`
`orthogonality between them. The spread symbols may be
`
`
`
`with an optional linked memory 222, at least one transceiver
`
`
`
`mapped to the allocated subcarriers in an inverse fast Fourier
`
`
`
`214, an optional battery 220, and an antenna 218. The pro­
`
`
`
`transform (IFFT) block and transmitted after the IFFT is
`
`
`
`
`cessor 216 is configured to perform uplink control informa­
`
`
`
`
`performed. For LTE-A, N may be larger than twelve. With a
`
`
`
`
`tion transmission methods for carrier aggregation. The trans­
`
`
`
`
`larger N, (i.e., a spreading sequence with longer length), a
`
`
`
`
`
`ceiver 214 is in communication with the processor 216 and
`
`
`
`WTRU may use several different cyclic shifts of the spreading
`
`
`
`
`the antenna 218 to facilitate the transmission and reception of
`
`
`
`sequence to transmit more than one modulated data symbol
`
`
`
`wireless communications. In case the optional battery 220 is
`
`
`
`
`
`per Single Carrier Frequency Division Multiple Access (SC­
`
`
`used in the WTRU 110, it powers the transceiver 214 and the
`
`FDMA) or Orthogonal frequency-division multiplexing
`
`processor 216.
`(OFDM) symbol.
`
`
`[0022] In addition to the components that may be found in
`
`
`
`
`
`a typical eNB, the eNB 120 includes a processor 217 with an
`[0028] The number of downlink carriers for each WTRU
`
`
`
`
`
`optional linked memory 215, transceivers 219, and antennas
`
`may be different, resulting in N being different. The code
`
`
`
`221. The processor 217 is configured to perform uplink con­
`
`
`orthogonality may not be maintained if the same set of
`
`
`
`trol information transmission methods for carrier aggrega­
`
`
`
`resource blocks (RBs) are used for all WTRUs each having
`
`
`
`tion. The transceivers 219 are in communication with the
`
`
`different N. In this case, different sets of RBs may be allo­
`
`
`
`processor 217 and antennas 221 to facilitate the transmission
`
`
`
`cated for different sequence lengths. As an example, if there
`
`
`
`
`and reception of wireless communications. The eNB 120 is
`
`are sequence lengths of12k where k=l, 2, . . . 5, then five sets
`
`
`
`
`connected to the Mobility Management Entity/Serving Gate-
`
`
`of RBs may be required. In this case, the Peak to Average
`
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`Apple EX1014 Page 10
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`

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`Apr. 22, 2010
`
`3
`
`slots. For example, the RB indexed with m=l is used by one
`
`
`Power Ratio (PAPR) is also not increased. If a WTRU uses
`
`
`
`
`
`
`WTRU, and m= 1 is on opposite edges of the frequency in the
`
`
`
`
`orthogonal sequences over the same RBs to transmit different
`
`
`
`modulation symbols, the PAPR may be increased after the
`
`
`
`two time slots. RBs on opposite edges of the spectrum may be
`IFFT.
`
`
`
`used in two time slots for maximum frequency diversity. In
`
`
`
`this case, LTE-A and LTE Release 8 WTRUs may be config­
`
`
`
`
`[0029] In another method, the length of the spreading
`
`
`
`ured to share the same PUCCH resources within the uplink
`
`sequence may be the same for all WTRU s, for example N= 12,
`
`
`(UL ) carrier.
`
`
`as in LTE Release 8. Then, a WTRU may be configu red to use
`
`
`
`more RBs to transmit more modulated symbols. For example,
`[0034] Alternatively, a predetermined portion of resources
`
`
`
`
`
`
`five RBs may be used to transmit five modulated symbols per
`
`
`
`may be reserved and allocated for LTE-A PUCCH only. In
`
`
`SC-FD M A or OFDM symbol. The same or different spread­
`
`
`this case, PUCCH'sof LTE WTRUs andLTE-A WTRUsmay
`
`ing sequences may be used on these RBs.
`
`use different RBs.
`
`
`[0030] For example, in FIG. 3, each RB may carry one
`[0035] When there are multiple UL carriers (including one
`
`
`
`
`
`
`
`
`modulated symbol with a spreading sequence of twelve. Up
`
`
`LTE carrier) available for the LTE-A WTRU, PUCCH trans­
`to three RBs may be used in an SC-OFDM symbol to transmit
`
`mission may be performed in one of the LTE-A carriers
`
`
`three modulated symbols. In this case, because more than one
`
`
`(excluding the LTE carrier), in order to avoid the control data
`
`sequence is used, the PAPR after the IFFT may be increased.
`
`
`to RE mapping collision with LTE, where RE is a resource
`
`
`In FIG. 3, each WTRU in LTE Release 8 uses one RB that is
`
`
`
`element. In this case, the assignment of a LTE-A carrier may
`
`
`
`
`indexed with m. For example, m=l. N is the total number of
`
`
`
`
`be performed on channel conditions, e.g. using the best com­
`
`
`RBs in an SC-FD M A symbol. In LTE-A, the WTRU may use
`
`ponent carrier over all the carriers.
`
`more than one RB. For example, RBs indexed with m=0, 1 ,
`
`
`
`[0036] In another example method for transmission over
`
`and 2. In this case, the WTRU uses 3 RBs. In LTE Release 8,
`
`
`
`one uplink component carrier, the WTRU and the base station
`
`
`a WTRU can use only a single RB.
`
`
`for down­may be configu red for separate coding of control
`
`[0031] To send more information in PUCCH as compared
`
`
`
`link (DL) carriers. In this example, the control data bits for
`
`
`
`to LTE Release 8, the WTRU may be RBs with assign ed more
`
`
`
`
`different downlink carriers may be coded separately and then
`
`
`
`the same spreading sequence and cyclic shift. In this case, the
`
`
`
`
`
`modulated. The methods disclosed herein above may be used
`
`
`WTRU may spread different data symbols with the same
`
`
`for mapping to physical resource elements.
`
`
`
`
`
`cyclic shift of the root sequence and map the spread symbols
`
`
`
`[0037] The control information for each downlink carrier
`
`
`on different sets of RBs. Alternatively, the WTRU may be
`
`
`
`may be transmitted by using different RBs, different spread­
`
`
`
`
`assigned the same set of RBs with more cyclic shifts of the
`
`
`
`ing sequences/cyclic shifts or a combination of these. As an
`
`
`
`same root sequence. In this case, the WTRU may spread
`
`
`
`example, RBs m=l and m=3 may be used for control data
`
`
`
`
`different data symbols with different cyclic shifts of the same
`
`
`
`transmission corresponding to two different downlink carri­
`
`
`
`root sequence and map the spread symbol on the same set of
`
`
`
`ers. In this case, the mapping of the control data resources
`
`
`
`
`RBs. In another alternative, the WTRU may be assigned more
`
`
`
`
`(frequency, sequence, cyclic shift) to the downlink carrier
`
`
`RBs with possibly different spreading sequences and cyclic
`
`
`
`may be performed with L1 and/or L2/L3 signaling. This
`
`shifts. In this case, the WTRU may spread different data
`
`
`
`mapping may also be performed implicitly by using mapping
`
`
`
`
`symbols with possibly different cyclic shifts of different root
`
`
`
`
`rules. For example, the CQI for the second downlink carrier
`
`
`
`sequences and map the spread symbol on different sets of
`
`
`may be transmitted with the same spreading sequence/cyclic
`
`
`
`
`RBs. In yet another alternative, the WTRU may be assigned a
`
`
`
`shift pair as for the first downlink carrier but on the next
`
`
`
`
`combination of the above. The assignment may be performed
`
`available RB.
`
`with L1 or L2/L3 signaling or pre-determined by an implicit
`[0038] In another embodiment for mapping of CQI, PMI
`
`
`
`
`mapping rule.
`
`
`
`and RI to physical resource elements in carrier aggregation,
`
`
`
`[0032] To control the PAPR increase, an adaptive PUCCH
`
`the PUCCH that carries the CQI (and any other possible
`
`transmission method may be used where power-limited
`
`
`
`
`control information such as scheduling request, ACK/NACK,
`
`
`
`WTRU s may be required to transmit fewer modulated control
`
`
`
`
`
`etc.) is transmitted on more than one uplink component car­
`
`
`data symbols in an SC-OFDM symbol. These WTRUs, for
`
`
`
`
`rier. In an example method for transmission on more than one
`
`
`
`
`example may be assigned only a single downlink carrier.
`
`
`
`uplink carrier, there is one PUCCH per UL component carrier
`
`
`
`
`Alternatively, these WTRUs may be required to report wide­
`
`
`
`
`carrying control information corresponding to one DL com­
`
`
`
`band CQI/PMI/RI which requires a smaller number of bits or
`
`
`
`ponent carrier. The same PUCCH structure as in LTE may be
`
`
`
`these WTRUs may be configured to use more subframes to
`
`
`
`used in each uplink carrier. Uplink carriers and downlink
`
`
`
`
`transmit the whole control information. For example, in one
`
`
`
`
`carriers may be linked to each other. Alternatively, if a com­
`
`
`subframe, the WTRU may transmit the control information
`
`
`
`ponent carrier is also used for LTE WTRU s, then no resource
`
`
`
`
`corresponding to only one downlink component carrier and
`
`
`allocation is made for LTE-A PUCCH, in order to avoid
`
`
`
`
`complete transmitting the control information corresponding
`
`
`resource collision between LTE-A PUCCH and LTE
`
`
`
`
`to all component carriers in several subframes. For example,
`
`
`
`PUCCH. Alternatively, a certain portion of resources may be
`
`
`
`
`in subframe 1, the WTRU may transmit control information
`
`
`reserved and allocated for LTE-A PUCCH only. In this case,
`
`
`
`
`for downlink component carrier #1, and then in subframe 2,
`
`
`PUCCH's of LTE WTRUs and LTE-A WTRUs will use dif­
`
`
`
`
`the WTRU may transmit the control information for downlink
`
`
`
`
`ferent RBs. This may allow the network to maintain backward
`
`
`
`component carrier# 2, etc. The WTRU configuration may be
`
`compatibility with LTE.
`
`performed with L1 or L2/L3 signaling.
`[0039] In another example method for transmission on
`
`
`
`
`
`[0033] The carrier (or spectrum) edge resource blocks
`
`
`
`more than one uplink carrier, one PUCCH per UL component
`
`(RBs) may be used for control data transmission when an
`
`
`
`
`carrier may carry control data corresponding to several DL
`
`
`
`LTE-A network is configured to use LTE uplink control chan­
`
`
`
`
`component carriers. In this example, a combination of the
`
`
`nel structure, as shown in FIG. 3. As shown in FIG. 3 for LTE
`
`
`
`methods disclosed hereinabove may be implemented. The
`
`
`
`Release 8, the WTRU uses two different RBs in the two time
`
`
`
`
`uplink carrier and the corresponding downlink carriers may
`
`IPR2022-00648
`Apple EX1014 Page 11
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`

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`US 2010/0098012 Al
`
`Apr. 22, 2010
`
`4
`
`be linked to each other. Several methods are available for
`
`
`
`
`carriers within the LTE-A aggregation for which the WTRU
`
`
`
`
`
`transmitting the control data information. In an example, the
`
`
`
`
`should report the best Ml subbands and CQI/PMI/RI infor­
`
`
`
`
`
`control information transmitted on each uplink carrier ( cor­
`
`
`
`
`mation, where Ml is associated with the subcarriers in an
`
`
`
`
`responding to one or several D L component carriers) may be
`
`
`
`
`assigned carrier. Additionally the signal may select which
`
`
`
`
`coded separately. In another example, the control information
`
`
`
`
`component carriers within the LTE-A aggregation that the
`
`
`transmitted on each uplink carrier corresponding to different
`
`
`WTRU may report the best M2 subbands and CQI/PMI/RI
`
`
`
`downlink carriers may be coded separately. In yet another
`
`
`
`information, where M2 is associated with the subcarriers in
`
`
`
`
`
`example, the control information transmitted over all uplink
`
`
`
`the associated carriers. For example, WTRU may be config­
`
`carriers may be coded jointly.
`
`
`
`ured to report the best Ml subbands from the carrier it is
`
`
`
`
`assigned to listen for PDCCH and reports the best M2 sub­
`
`
`
`[0040] In another embodiment for mapping of CQI, PMI,
`
`bands from K specific other carriers.
`
`
`
`RI and ACK/NACK to physical resource elements in carrier
`
`
`
`aggregation, frequency diversity/hopping over different
`
`
`
`[0046] In another reporting example, L1, L2/3, or broadcast
`
`
`
`uplink carriers may be implemented. The PUCCH data may
`
`
`
`
`signaling may be transmitted to the WTRU that identifies or
`
`
`
`
`
`be transmitted on different uplink carriers at different time
`
`
`
`
`
`selects the carriers within the LTE-A aggregation for which
`
`instances. For example, when the PUCCH may be transmitted
`
`
`the WTRU should report the best M sub bands and CQI/PMI/
`
`
`
`
`only on one uplink carrier at any time to maintain low PAPR ,
`
`
`
`RI information for each associated DL carrier, e.g., the CQI
`
`
`
`the PUCCH may be transmitted on different UL component
`
`
`for best M sub bands within each carrier are reported.
`
`
`
`
`carriers using intra-subframe or inter-subframe hopping. The
`
`
`
`[0047] In another reporting example, L1, L2/3, or broadcast
`
`
`
`same PUCCH can be repeated on different uplink carriers.
`
`
`
`
`signaling may be transmitted to the WTRU that identifies or
`
`
`
`[0041] Disclosed hereinafter are the different reporting
`
`
`
`
`selects the carrier within the LTE-A aggregation for which the
`
`modes for the CQI information. In LTE, there are three main
`
`
`WTRU should report the wideband CQI, e.g., where the
`
`
`
`CQI reporting modes: WTRU selected, base station config­
`
`
`
`
`wideband CQI report corresponds to the carrier that the
`
`
`
`
`ured subband reporting and wideband reporting. In WTRU
`
`
`
`
`WTRU is assigned to listen to for the PDCCH, i.e., wideband
`
`
`
`selected mode, the WTRU selects the best M subbands and
`
`
`assigned carrier CQI reporting.
`
`
`
`reports theCQI andPMI to the base station. In the base station
`[0048] In another reporting example, L1, L2/3, or broadcast
`
`
`
`
`
`
`
`configured mode, the base station configures a set of sub­
`
`
`
`
`signaling may be transmitted to the WTRU indicating which
`
`
`
`bands, and the WTRU reports the CQI/PMI of the whole set
`
`
`
`
`
`carriers are associated carriers within the LTE-A aggregation
`
`
`or a subset of the set.
`
`
`
`for which it should report carrier wide CQI/PMI/RI. The
`
`
`[0042] In an example method for use with multiple down­
`
`
`
`
`WTRU may be configured to transmit a network defined set of
`
`
`
`
`link carriers, the CQI/PMI/RI for each downlink carrier may
`
`
`wideband CQI reports. Carrier wide is meant to cover the fact
`
`
`
`
`be selected independently. In another example method for use
`
`
`
`
`that "associated carriers" may mean multiple carriers and we
`
`
`
`
`
`with multiple downlink carriers, all or several of the downlink
`
`
`
`
`want to report for all. In addition, separate reports for each of
`
`
`
`carriers may form an aggregated bandwidth and the CQI/
`
`these component carriers may be sent.
`
`
`PMI/RI may be reported by using this bandwidth. The sub­
`
`
`
`[0049] In another reporting example, L1, L2/3, or broadcast
`
`
`
`bands selected may be different in each carrier or they may
`
`
`
`signaling may be transmitted to the WTRU indicating which
`
`
`
`span more than one carrier. For example, if there are N car­
`
`
`
`carriers are associated carriers within the LTE-A aggregation
`
`
`
`
`
`riers, each with k RBs, then a single carrier ofNk RBs may be
`
`
`
`for which the WTRU should report the best M carrier wide
`
`
`
`assumed, and accordingly a wideband CQI/PMI and a single
`
`CQI/PMI/RI information.
`
`
`RI over Nk RBs may be reported. This approach may be more
`
`
`
`[0050] In another reporting example, L1, L2/3, or broadcast
`
`
`
`useful when the carriers are contiguous. The latter example
`
`
`
`
`signaling may be transmitted to the WTRU selecting the
`
`
`
`
`method may be used when the aggregated carriers are con­
`
`
`
`carriers within the LTE-A aggregation for which the WTRU
`
`
`tiguous and forme