Document made
`
`available under
`
`the
`
`Patent Cooperation Treaty (PCT)
`
`International application number: PCT/US2010/051028
`
`International filing date:
`
`01 October 2010 (01.10.2010)
`
`Document type:
`
`Certified copy of priority document
`
`Document details:
`
`Country/Office: US
`Number:
`61/356,449
`
`Filing date:
`
`18 June 2010 (18.06.2010)
`
`Date of receipt at the International Bureau:
`
`15 October 2010 (15.10.2010)
`
`Remark:
`
`Priority document submitted or transmitted to the International Bureau in
`compliance with Rule 17.1(a),(b) or (b-bz's)
`
`
`
`World Intellectual Property Organization (WIPO) - Geneva, Switzerland
`Organisation Mondiale de la Propriété Intellectuelle (OMPI) - Geneve, Suisse
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

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`United States Patent and? rI‘radenml-k ()ffiet
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`October 14, 2010
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`THE RECORDS OF THE UNITED STATES PATENT AND TRADEMARK
`OFFICE OF THOSE PAPERS OF THE BELOW IDENTIFIED PATENT
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`APPLICATION THAT MET THE REQUIREMENTS TO BE GRANTED A
`FILING DATE.
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`APPLICATION NUMBER: 61/356,449
`FILING DATE: June 18, 2010
`RELATED PCT APPLICATION NUMBER: PCT/USI 0/51 028
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`APPLICATION, TO BE USED FOR FILING ABROAD UNDER THE PARIS
`CONVENTION, IS US61/356,449
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`Pamm and ‘I’rademark 0me
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685US01
`
`[0001]
`
`METHOD AND APPARATUS FOR PERFORMING UPLINK
`FEEDBACK TRANSMISSION FOR CARRIER AGGREGATION
`
`[0002]
`
`This application is related to wireless communications.
`
`FIELD OF INVENTION
`
`[0003]
`
`BACKGROUND
`
`[0004]
`
`Uplink Feedback Transmission on PUCCH
`
`[0005]
`
`In long term evolution (LTE) wireless communications, the specifications
`
`include hybrid automatic repeat
`
`request
`
`(HARQ) positive acknowledgment
`
`(ACK)/negative acknowledgement (NACK) (hereafter ACK/NACK or A/N), due to
`
`downlink (DL) transmissions in the absence of uplink (UL) data are transmitted on a
`
`physical UL control channel (PUCCH). The PUCCH is a shared channel for carrying
`
`control signaling from multiple wireless transmit/receive units (WTRUs), and consists
`
`of a frequency resource of one resource block (12 subcarriers). In LTE, ACK/NACK
`
`signaling of one to two bits takes place on PUCCH format 1a/1b. Figure 1 shows the
`
`PUCCH Format 1a/1b structure for one slot with a normal cyclic prefix (CP) according
`
`to LTE, with data blocks 101 and reference blocks 102 (demodulation reference signals
`
`(DM RS)).
`
`[0006]
`
`Binary phase shift keying (BPSK)/quadrature phase shift keying (QPSK)
`
`modulation is transmitted on each single carrier-frequency division multiple access
`
`(SC-FDMA) data symbol by modulating a cyclic time shift of the base sequence of
`
`length-12 prior to orthogonal frequency division multiplexing (OFDM) modulation.
`
`Moreover, a time-domain cover code is used to code division multiplex (CDM) multiple
`
`users on the same resource block (RB).
`
`[0007]
`
`[0008]
`
`HARQ ACK/NACK Transmission using DFT-S-OFDM
`
`For carrier aggregation,
`
`the maximum number of bits to indicate
`
`ACK/NACK/discontinuous transmission (DTX) states for single and dual codeword
`
`1310601-1
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685US01
`
`HARQ transmission corresponding to multiple (DL) component carriers (CCs) is
`
`expected to be around 8 and 12 bits, respectively. Several potential UL ACK/NACK
`
`transmission schemes for carrier aggregation have been proposed. Among different
`
`ACK/NACK multiplexing candidates, DFT-S-OFDM is one of the most feasible
`
`solutions to support large payload sizes. The HARQ feedback transmission scheme
`
`based on the DFT-S-OFDM structure for one slot with normal CP is shown in Figure 2,
`
`with data blocks 201 and reference blocks 202 (DM RS).
`
`[0009]
`
`According to this scheme, the ACK/NACK bits are encoded, modulated
`
`and spread over one slot after DFT precoding through the use of a cover code. The
`
`spreading factor of the cover code depends on the number of available data SC-FDMA
`
`symbols within a slot. For example, in Figure 2, the spreading factor is equal to five.
`
`In this scheme, multiple users are multiplexed using time-domain spreading codes.
`
`[0010]
`
`HARQ ACK/NACK Transmission using channel selection
`
`[001 1]
`
`With Channel Selection, at least one bit of information would be conveyed
`
`by the selection of the indices on which the PUCCH transmission is performed (i.e., n
`
`bit(s) of information when 2n indices are available to the WTRU for PUCCH A/N
`
`transmission). The WTRU would transmit a PUCCH format type 1 like signal on one
`
`(or more) of those multiple candidate PUCCH indices, and both the signal itself and on
`
`which PUCCH indices (or combination thereof) it is sent then encode the ACK/NACK
`
`information.
`
`[0012]
`
`Primary Cell and Secondary Cell(s)
`
`[0013]
`
`When referred to hereafter, the term “primary component carrier (PCC)”
`
`includes, without loss of generality, a carrier of a WTRU configured to operate with
`
`multiple component carriers for which some functionality, such as for example,
`
`derivation of security parameters and NAS information, may be applicable only to that
`
`component carrier. The WTRU may be configured with at least one PCC for the
`
`downlink (DL PC C) and one for the uplink (UL PCC). Consequently, a carrier which is
`
`1310601-1
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685US01
`
`not a PCC of the WTRU is hereafter referred to as a Secondary Component Carrier
`
`(SCC).
`
`[0014]
`
`The DL PCC may, for example, correspond to the CC used by the WTRU
`
`to derive initial security when initially accessing the system. The UL PCC may, for
`
`example, correspond to the CC whose PUCCH resources are configured to carry Uplink
`
`Control Information (UCI)
`
`including HARQ A/N feedback and Channel State
`
`Information (CSI, e.g., CQI, rank information RI and/or PMI information) feedback for
`
`a given WTRU.
`
`[0015]
`
`A cell of a WTRU may typically have a BL CC, and optionally, may be
`
`combined with a set of UL resources (e.g., an UL CC). Consequently, for LTE R10 the
`
`Primary Cell (hereafter PCell) may have a combination of DL PCC, and an UL PCC; a
`
`Secondary Cell (hereafter SCell) of the WTRU’s multicarrier configuration have a BL
`
`SCC, and optionally an UL SCC (i.e., asymmetric configurations, where a WTRU is
`
`configured with more DL CCs than UL CCs, are supported in LTE R10). For LTE R10,
`
`the WTRU’s multicarrier configuration includes one PCell and up to five SCells.
`
`[0016]
`
`Using carrier aggregation, the UL feedback payload scales linearly with
`
`the number of configured/activated component carriers. A single WTRU-specific UL
`
`CC is configured semi-statically for carrying PUCCH ACK/NACK, scheduling request
`
`(SR), and periodic channel state information (CSI) from a WTRU. An ACK/NACK
`
`multiplexing scheme based on the DFT-S-OFDM structure has been recently proposed
`
`to support large ACK/NACK payload sizes. It would be desirable to address design
`
`challenges associated with such a scheme when it
`
`is used for UL feedback
`
`transmissions.
`
`[0017]
`
`User multiplexing: Based on the DFT-S-OFDM structure, the HARQ
`
`ACK/NACKS and/or CSI from multiple WTRUs are multiplexed into a single PUCCH
`
`RB using orthogonal code division multiplexing. Solutions are desirable to assure
`
`orthogonality among the WTRUs multiplexed into a single PUCCH RB, implicitly
`
`1310601-1
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`identify PUCCH resource allocation at the WTRU, randomize inter-cell interference,
`
`and randomize intra-cell interference.
`
`[0018]
`
`Channel coding: According to one of the variants of DFT-S-OFDM, the
`
`scheme is capable of transmitting 24 QPSK symbols which is equivalent to 48 encoded
`
`bits. Given that
`
`the UL feedback payload size scales with the number of
`
`configured/activated CCs, it is important to design a variable channel coding scheme
`
`that provides a reasonable coding gain over a range of payload sizes. The maximum
`
`number of the HARQ ACK/NACK bits to be transmitted under carrier aggregation is
`
`limited to 10-12 bits. Thus, the channel encoder should be optimized such that the
`
`performance targets related to the ACK/NACK transmissions at low signal-to-
`
`interference plus noise ratios (SINRs) may be achieved. The payload size for 081
`
`transmissions using carrier aggregation is expected to be in the range of 20-55 bits.
`
`Accordingly, the channel encoder design for the CSI feedback signaling should target
`
`reliable reception of large payloads.
`
`[0019]
`
`Physical resource mapping: The DFT-S-OFDM based structure may be
`
`used to transmit the HARQ ACK/NACK and/or CSI on a single PUCCH RB. The
`
`physical mapping of feedback symbols on the available resource elements greatly
`
`impacts the performance of feedback transmissions. One of the limitations related to
`
`ACK/NACK mapping is that conventional systems do not sufficiently exploit frequency
`
`diversity. Another constraint of PUCCH transmissions is that
`
`there is no
`
`dimensioning of the corresponding resources with respect to the ACK/NACK and/or
`
`CSI payload. Solutions are thus needed to map feedback symbols on the resource
`
`elements of a single PUCCH RB such that the frequency diversity gain is maximized,
`
`and multiplex ACK/NACK and CST on a single RB such that the respective
`
`performance targets are met.
`
`[0020]
`
`UL sounding reference signal (SRS): The transmission of HARQ AN and
`
`SRS may be configured to be in the same subframe. The way in which these
`
`transmissions are to be handled by DFT-S-OFDM based structure has not been
`
`1310601-1
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685US01
`
`addressed.
`
`In fact, by using a shortened PUCCH transmission in such subframes,
`
`whereby the last SC-FDMA symbol of the AN is used for SRS transmission, the same
`
`spreading factor cannot be applied on the data SC-FDMA symbols on both slots within
`
`a subframe.
`
`[0021]
`
`Extended CP: In the case of extended CP with five data SC-FDMA
`
`symbols and one demodulation reference signal (DMRS) per slot, the structure of DFT-
`
`S-OFDM would be different from the normal CP case. An extension of DFT-S-OFDM
`
`based structure to the subframes with extended CP is desired.
`
`[0022]
`
`SUMMARY
`
`[0023]
`
`A method and apparatus are described for performing uplink (UL)
`
`feedback transmission for carrier aggregation. In one scenario, user multiplexing is
`
`implemented to assure orthogonality among WTRUs multiplexed into a single physical
`
`UL control channel (PUCCH) resource block (RB), implicitly identify PUCCH resource
`
`allocation at the WTRU, and randomize inter-cell and intra-cell interference through
`
`both subcarrier and slot-level hopping, as well as scrambling.
`
`In other scenarios,
`
`channel coding, physical resource mapping of UL control information (UCI), and UCI
`
`transmission in the presence of a sounding reference signal (SRS) or an extended cyclic
`
`prefix (CP) are described.
`
`[0024]
`
`Specific properties of a transmission are disclosed using methods based on
`
`Channel Selection.
`
`In particular, one characteristic that
`
`is
`
`specific to such
`
`transmission(s) is that information bits encoded using Channel Selection (i.e., the b
`
`bits that are conveyed by the detection of a transmission on one of N resources, where
`
`N = 2b), are typically more robustly decoded by a receiver than information bit(s)
`
`obtained by decoding the received signal on the PUCCH resource. This is because the
`
`detection of whether or not a signal on a PUC CH resource is present (i.e., DTX
`
`detection) is more accurate than the decoding of the information bit(s) in the received
`
`signal once a signal is indeed detected.
`
`1310601-1
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`[0025]
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[0026]
`
`A more detailed understanding may be had from the following description,
`
`given by way of example in conjunction with the accompanying drawings wherein:
`
`[0027]
`
`[0028]
`
`Figure 1 shows a conventional PUCCH format 1a/1b structure in LTE;
`
`Figure 2 shows a conventional hybrid automatic repeat request (HARQ)
`
`positive acknowledgement (ACK)/negative acknowledgement (NACK) transmission
`
`according to a discrete Fourier transform-spread-orthogonal frequency division
`
`multiplexing (DFT-S-OFDM) method;
`
`[0029]
`
`[0030]
`
`Figure 3 shows a an LTE wireless communication system/access network;
`
`Figure 4 shows an exemplary block diagram of an LTE wireless
`
`communication system;
`
`[0031]
`
`Figure 5 shows a processing procedure for wireless transmit/receive unit
`
`(WTRU) feedback;
`
`[0032]
`
`[0033]
`
`[0034]
`
`Figure 6 shows a PUCCH channel coding chain at the WTRU;
`
`Figure 7 shows allocation of different control fields on the PUCCH;
`
`Figure 8 shows a shortened PUCCH structure for DFT-S-OFDM when
`
`sounding reference signal (SRS) transmission is enabled for a spreading factor (SF) of
`
`5;
`
`[0035]
`
`Figure 9 shows a shortened PUCCH structure for DFT-S-OFDM when
`
`SRS transmission is enabled for SF=3;
`
`[0036]
`
`Figure 10 shows a PUCCH structure for DFT-S-OFDM with an extended
`
`cyclic prefix (GP) for SF=5; and
`
`[0037]
`
`Figure 11 shows a PUCCH structure for DFT-S-OFDM with an extended
`
`GP for SF=3.
`
`1310601-1
`
`-6-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`[0038]
`
`DETAILED DESCRIPTION
`
`[0039]
`
`When referred to hereafter, the terminology "wireless transmit/receive
`
`unit (WTRU)H includes but is not limited to a user equipment (UE), a mobile station, a
`
`fixed or mobile subscriber unit, a pager, a cellular telephone, a personal digital
`
`assistant (PDA), a computer, or any other type of device capable of operating in a
`
`wireless environment.
`
`[0040]
`
`When referred to hereafter, the terminology "base station" includes but is
`
`not limited to a Node-B, a site controller, an access point (AP), or any other type of
`
`interfacing device capable of operating in a wireless environment.
`
`[0041]
`
`Figure 3 shows an LTE wireless communication system/access network
`
`300 which includes an evolved-universal terrestrial radio access network (E-UTRAN)
`
`205. The E-UTRAN 205 includes several eNodeBs 220. A WTRU 210 is in
`
`communication with an eNodeB 220. The eNodeBs 220 interface with each other using
`
`an X2 interface. Each of the eNodeBs 220 also interface with a mobility management
`
`entity (MME)/serving gateway (S-GVV) 230 through an 81 interface. Although a single
`
`WTRU 210 and three eNodeBs 220 are shown in Figure 3, it should be apparent that
`
`any combination of wireless and wired devices may be included in the LTE wireless
`
`communication system/access network 300.
`
`[0042]
`
`Figure 4
`
`is an exemplary block diagram of an LTE wireless
`
`communication system 400 including the WTRU 210, the eNodeB 220, and the MME/S-
`
`GW 230. As shown in Figure 4, the WTRU 210, the eNodeB 220 and the MME/S-GW
`
`230 are configured to perform UL feedback transmission for carrier aggregation.
`
`[0043]
`
`In addition to the components that may be found in a typical WTRU, the
`
`WTRU 210 includes a processor 316 with an optional linked memory 322, at least one
`
`transceiver 314, an optional battery 320, and an antenna 318. The processor 316 is
`
`configured to perform UL feedback transmission for carrier aggregation. The
`
`transceiver 314 is in communication with the processor 316 and the antenna 318 to
`
`1310601-1
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`facilitate the transmission and reception of wireless communications. In case a battery
`
`320 is used in the WTRU 210, it powers the transceiver 314 and the processor 316.
`
`[0044]
`
`In addition to the components that may be found in a typical eNodeB, the
`
`eNodeB 220 includes a processor 317 with an optional linked memory 315, transceivers
`
`319, and antennas 321. The processor 317 is configured to perform UL feedback
`
`transmission for carrier aggregation.
`
`[0045]
`
`The transceivers 319 are in communication with the processor 317 and
`
`antennas 321 to facilitate the transmission and reception of wireless communications.
`
`The eNodeB 220 is connected to the MME/S-GW 230 which includes a processor 333
`
`with an optional linked memory 334.
`
`[0046]
`
`The WTRU may use the following processing steps in order to feedback
`
`control information to the network (NW): cyclic redundancy check (CRC) attachment,
`
`channel coding, rate matching, channel interleaver, scrambling, modulation, sub-
`
`carrier or slot level hopping and resource allocation.
`
`[0047]
`
`A possible representation of the processing steps for the physical uplink
`
`control channel (PUCCH) is illustrated in Figure 5, where any order, combination, or
`
`variation of the processing steps is possible. The order, combination, or variation of the
`
`processing steps may be dependent on the mode, and or configuration, of the
`
`procedures for WTRU feedback of control information using a PUCCH.
`
`[0048]
`
`WTRU feedback of control information on PUCCH may use the steps
`
`illustrated in Figure 5 in combination with the transmission of a physical uplink
`
`shared channel (PUSCH).
`
`[0049]
`
`Both reference signals and control signals of the WTRUs assigned to
`
`transmit on the same set of subcarriers are fully orthogonal. More specifically, the
`
`orthogonality among WTRUs is achieved by a combination of: Cyclic time shifts of the
`
`same Zadoff—Chu (ZC) base sequence on the DMRS symbols, (orthogonality between
`
`DMRSs of different WTRUs occupying the same set of subcarriers RB is provided by
`
`using different cyclic time shifts of the same ZC base sequence), and the time-domain
`
`1310601-1
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`orthogonal cover code on the DM-RS symbols. Orthogonality between DMRSs of
`
`different WTRUs occupying the same set of subcarriers or RB is provided by using
`
`different time-domain orthogonal cover-codes on the DMRSs. The length-2 and length-
`
`3 orthogonal block spreading codes could be based on Walsh—Hadamard codes or DFT
`
`codes generated from DFT matrix of different sizes, respectively, and can be used in
`
`conjunction with the DFT-S-OFDM based PUCCH formats with 2 and 3 DMRS
`
`symbols (i.e., SF=5 and SF=3, respectively).
`
`Timed-Domain
`
`Walsh-Hadamard
`
`Spreading code index
`
`code
`
`for RS symbols
`
`of Length-2
`
`[0050]
`
`Table 2 below shows time-domain spreading sequence indices for DMRS
`
`symbols; SF=4.
`
`Timed-Domain
`_
`_
`Spreading code index
`
`for DMRS symbols
`
`0
`
`2
`
`
`
`
`
`
`DFT code
`
`of Length-3
`
`[+1
`
`+1
`
`+1]
`
`[+1
`
`ej4n/3
`
`ejZn/S]
`
`Table 2
`
`[0051]
`
`The orthogonality among WTRUs may also be achieved by the time-
`
`domain orthogonal spreading code on data SC-FDMA symbols. Orthogonality between
`
`the uplink control information (UCI) of different WTRUs occupying the same set of
`
`subcarriers or RB is provided by using different time-domain orthogonal cover-codes on
`
`the data SC-FDMA symbols.
`
`1310601-1
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`[0052]
`
`The length-5, length-4, and length-3 orthogonal block spreading codes
`
`could be based on Walsh—Hadamard codes or DFT codes generated from DFT matrix of
`
`different sizes, and can be used in conjunction with the DFT-S-OFDM based PUCCH
`
`formats with spreading factors equal to 5, 4 and 3, respectively.
`
`[0053]
`
`For example, for a DFT-S-OFDM based PUCCH transmission with
`
`normal CP and spreading factor of 5, the WTRU uses: A different cyclic time-shift of
`
`length-12 ZC-based sequence for frequency-domain spreading for each DM RS symbol
`
`within a slot, a length-2 orthogonal block spreading code for DMRS time-domain
`
`spreading on the two available reference SC-FDMA symbols in each slot, or a length-5
`
`orthogonal block spreading code for data time-domain block spreading on the five
`
`available data SC-FDMA symbols in each slot.
`
`[0054]
`
`In the case of semi-persistently scheduled downlink data transmissions on
`
`the physical downlink shared channel (PDSCH) without a corresponding downlink
`
`grant on the physical downlink control channel (PDCCH), and/or dynamically
`
`scheduled downlink data transmissions on the PDSCH indicated by downlink
`
`assignment signaling on the PDCCH, the WTRU uses the PUCCH ACK/NACK
`
`resource index to determine the combination of the cyclic time shift of the ZC-based
`
`sequence, a, and time-domain orthogonal codes assigned to the WTRU within a
`
`PUCCH region.
`
`[0055]
`
`The PUCCH ACK/NACK resource index, nfU’CCH , used by the WTRU for
`
`transmission of the new PUCCH format (e.g., PUCCH format 3) may be either semi-
`
`statically configured by higher layer signaling or implicitly determined by the WTRU
`
`based on the index of the first control channel element (CCE) of the downlink control
`
`assignment on the DL primary component carrier (PCC). Subsequently, the WTRU
`
`may determine the following information from the identified PUCCH resource index,
`
`(the cyclic shift for reference signals or DMRS a(ns,l), the orthogonal sequence index for
`
`block-wise spreading of data signals noC (115,16), or the orthogonal sequence index for
`
`1310601-1
`
`-10-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685US01
`
`reference signals or DMRS moC (n5) where n5 is the slot number within the radio frame,
`
`[ is the index of the reference symbol within the slot, and k is the index of the
`
`subcarrier within the RB on which PUCCH is being transmitted.
`
`[0056]
`
`The WTRU may determine the resource index within the two resource
`
`blocks of a subframe to which the PUCCH is mapped according to
`
`77100013) = "132cm mOdC
`
`3
`
`Equation (1)
`
`where c is the number of the DM RS symbols within a slot and
`
`7700013 ,k) = n'(ns) ,
`
`Equation (2)
`
`where
`
`”lo/ls) : nlgllCCH mOd NgrlJCCH
`
`7
`
`Equation (3)
`
`with Né’fCCH as the spreading factor of the DFT-S-OFDM for data block spreading and
`
`“mod” as modulo operation.
`
`[0057]
`
`For example, the assigned time-domain orthogonal cover-code can be
`
`obtained as modulo-5 and modulo-3 of the PUCCH resource index for a DFT-S-OFDM
`
`based structure with spreading factor of 5 and 3, respectively. Note that by
`
`introducing the time domain cover code for the RS symbols in each slot of the PUCCH
`
`in addition to cyclic shifts, another multiplexing dimension is created. The examples of
`
`the PUCCH resource index allocation used by the WTRU within a PUCCH RB in the
`.
`.
`£E.’~“'”‘-'”ii§._.
`.
`Wins-
`absence of time-domain cover code for the RS symbols for $511531? - 2 and fisgfifi - 3 are
`
`illustrated in Table 3 and Table 4, respectively.
`
`1310601-1
`
`-11-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685USOl
`
`Time-domain orthogonal code index
`
`for data block spreading with SF=5
`noc=1
`noc=2
`[100:3
`
`noc=4
`
`Hoe:
`
`WTRU O
`
`Cyclic shift index
`
`O
`
`1 2
`
`3 4 5
`
`6 7 8
`
`9 1
`
`0
`
`11
`
`
`
`
`
`
`
`
`WTRU 1
`
`WTRU 2
`
`WTRU 3
`
`WTRU 4
`
`
`
`Table 3
`
`[0058]
`
`Note that in the case of £§E§§= 3 , only up to four WTRUs can be
`
`multiplexed on the same RB for SF=5, while in the case of Eggs: 2 , up to five
`
`WTRUs can be multiplexed on a single RB. However, in the case of orthogonal cover
`
`code applied to the reference signals or DMRS, the maximum number of the WTRUs
`
`that can be multiplexed on the same RB will be upper bounded by the spreading factor
`
`of the orthogonal block code used for spreading of control information on the data
`
`symbols (i.e., for SF=5, up to five WTRUs can always be multiplexed on the same RB
`{FL-9733.5:
`regardless of fisf'affii
`
`).
`
`1310601-1
`
`-12-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685USOl
`
`Time-domain orthogonal code index
`
`Cyclic shift
`
`for data block spreading with SF=5
`
`
`
`
`
`2 1100::noe=1 noc=4
`
`
`
`
`
`
`[0059]
`
`Non-limiting exemplars of the PUCCH resource index allocation used by
`
`the WTRU within a PUCCH RB in the case of orthogonal cover code applied to the
`
`reference signals or DMRS is illustrated in Table 5 below.
`
`1310601-1
`
`-13-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`Cyclic Shift
`index
`
`orthogonal
`Time-domain orthogonal code index
`cover-code index
`for data block spreading with SF=5
`for 2 DMRS symbols
`
`1100:].
`noc=4
`moc=0
`moc=1
`noc=0
`noc=2
`noc=3
`
`
`
`
` 0
`
`WTRU 0
`
`WTRU
`
`
`
` 2
`
`WTRU 3
`
`WTRU
`
`
`
` 4
`
`WTRU 1
`
`WTRU
`
`
`
`
`
`
`
` 6
`
`WTRU 4
`WTRU 4
`
`
` 8
`
`WTRU 2
`
`WTRU
`
`
`
`
`10
`
`ll
`
`
`Table 5
`
`[0060]
`
`Both inter-cell and intra-cell interference randomizations for PUCCH
`
`transmissions are achieved through scrambling. Accordingly, in each subframe in the
`
`uplink, the WTRU scrambles the control information encoded bits prior to modulation.
`
`[0061]
`
`The scrambling sequence may be derived as a function of the identity of
`
`the cell or cell identity (ID), e.g., at least one of the physical cell ID (PCI), from the
`
`synchronization signal of the cell, (in particular, the PCI of the DL primary component
`
`carrier (PCC) of the WTRU’s multicarrier configuration), or the cell ID, which reads on
`
`system information block type 1 (SIB 1), which uniquely identifies a cell in the context
`
`1310601-1
`
`-14-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`of the public land mobile network (PLMN) (in particular, from the SIBl of the DL PCC
`
`of the WTRU’s multicarrier configuration).
`
`[0062]
`
`The scrambling sequence may be derived as a function of the evolved
`
`global cell ID (EGCI), which include both the PLMN ID and the cell ID. When using an
`
`identity of the cell to which the WTRU has a radio resource control (RRC) connection,
`
`the WTRU may scramble the control information using the PCI of the DL PCC of its
`
`multicarrier configuration.
`
`[0063]
`
`The scrambling sequence may be derived as a function of the subframe
`
`number within a radio frame.
`
`[0064]
`
`The scrambling sequence may be derived as a function of the WTRU
`
`identity, for example a radio network temporary identifier (RNTI) of the WTRU such
`
`as the WTRU’s cell-RNTI (C-RNTI).
`
`[0065]
`
`The scrambling sequence may be derived as a function of the identity of
`
`the UL CC carrying a PUCCH or UL primary CC, e.g., at least one of an identity
`
`explicitly configured
`
`by the network as part of the WTRU’s radio connection
`
`configuration, the absolute radio frequency channel number (ARFCN) or evolved
`
`absolute radio frequency channel number (EARFCN), (i.e., the UL frequency) of the UL
`
`CC, the value of the carrier indication field (CIF) used for cross carrier scheduling
`
`carried by PDCCH, or possibly the CIF value corresponding to the DL CC to which the
`
`UL CC is linked to.
`
`[0066]
`
`The scrambling sequence may be derived as a function of
`
`the
`
`number/identity of the activated DL CCs, the number/identity of the configured DL
`
`CCs, or the identity of the DL CCs, which may include at least one of the identity of the
`
`DL PCC paired with the UL PCC which carriers PUCCH, or the identity of the DL
`
`secondary component carrier (SCC) for which the HARQ ACK/NACK feedback
`
`corresponds to.
`
`[0067]
`
`The scrambling sequence may be derived as a function of the number of
`
`DL PDSCH assignments received in the subframe for which HARQ feedback is being
`
`1310601-1
`
`-15-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`transmitted or reported, (possibly only including the dynamically scheduled PDSCH
`
`DL assignments), a value derived as a function of the PUCCH resource on which the
`
`WTRU transmits the UCI, a value explicitly configured by the network as part of the
`
`WTRU’s radio connection configuration, A value explicitly configured by the network as
`
`part of the WTRU’s DL/UL PCC re-configuration, a value derived from the position(s)
`
`of one or a subset of DL assignment(s) in the PDCCH(s) of one or a subset of DL CCs,
`
`an index provided by higher layer (e.g., configuration or activation command).
`
`[0068]
`
`In summary, the scrambling sequence may be derived as a function of at
`
`least one of, or any combination of the above.
`
`[0069]
`
`A cell-specific hopping scheme based on a predetermined hopping pattern
`
`may be used to achieve inter-cell interference randomization for DFT-S-OFDM based
`
`PUCCH transmissions. The hopping is performed on the subcarrier-level where, for a
`
`given subcarrier in a given slot, the WTRU uses a different time-domain orthogonal
`
`cover codes for data block spreading.
`
`[0070]
`
`The time-domain orthogonal cover code index on a given subcarrier may
`
`be obtained by adding (modulo-NSCCH) a pseudo-random cell-specific offset to the
`
`assigned time-domain orthogonal cover code index. Thus, the WTRU may determine
`
`the resource index within the two resource blocks of a subframe to which the PUCCH
`
`is mapped according to:
`
`nOC (n3 ,k) = (115211013 ,k) + n'(ns ))m0d N§FUCCH
`
`7
`
`Equation (4)
`
`where n§:H(_nS.k) is a cell-specific parameter that varies with the subcarrier number k
`
`and the slot number n3. For example, for a DFT-S-OFDM based structure with
`
`spreading factor of 5 and 3, the time-domain orthogonal cover code index on a given
`
`subcarrier in even slots is obtained by adding (modulo-5) and (modulo-3) a pseudo-
`
`random cell-specific offset to the assigned time-domain orthogonal cover code index,
`
`respectively.
`
`[0071]
`
`A non-limiting example of parameter n::11(ns,k) for N§§CCH = 5is given by
`
`1310601-1
`
`-16-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`n::“(n. . k) = ZiocoNiB -n. + 5k + 2‘) - 2"
`
`7
`
`Equation (5)
`
`where c(z') is the pseudo-random sequence. The pseudo-random sequence generator
`
`may be initialized with cinit : NE? at the beginning of each radio frame. The pseudo-
`
`random sequence used for time-domain orthogonal cover code hopping could be a
`
`length-31 Gold sequence generator or other length Gold sequence generator.
`
`[0072]
`
`The interference between cells and between WTRUs are randomized
`
`through the use of a time-domain cover-code remapping scheme which is used by the
`
`WTRU in the second slot according to a predetermined WTRU—specific or cell-specific
`
`hopping pattern. The hopping in performed on the slot-level where in, for a given
`
`subcarrier in each slot, the WTRU uses a different time-domain orthogonal cover code.
`
`[0073]
`
`The WTRU may determine the resource index within the two RBs of a
`
`subframe to which the PUCCH is mapped as:
`
`1200 (ns, k) = (n::11(ns , k) + 71' (n5 ))mod N§FUCCH ,
`
`Equation (6)
`
`where
`
`n'(ns) 2 17(3)
`’PUCCH
`
`mod NgCCH
`
`,
`
`Equation (7)
`
`for even slots (i.e., nsmodZ =0), and
`
`ms) 2 [Ngm (ms _1) +1)]mod(N§§CCH +1)_1
`
`7
`
`Equation (8)
`
`for odd slots (i.e., ns mod2 =1).
`
`[0074]
`
`The HARQ ACK/NACK information bits and the CSI bits may be jointly
`
`encoded prior to scrambling and modulation and then transmitted on both slots of a
`
`PUCCH subframe. The payload sizes for the HARQ ACK/NACK and the CSI
`
`transmissions could be different. Besides, the channel coding rate could be variable
`
`depending on the number of activated or configured DL CCs and/or transmission
`
`modes for which HARQ feedback or periodic CSI are needed to be transmitted.
`
`[0075]
`
`The channel encoder may be a block coding-type scheme such as
`
`punctured (64, k) Reed-Muller (RM) code for a DFT-S-OFDM based or similar structure
`
`1310601-1
`
`-17-
`
`Ericsson Exhibit 1017
`
`ERICSSON v. ETRI
`
`Ericsson Exhibit 1017
`ERICSSON v. ETRI
`
`

`

`IDC-10685U801
`
`with SF=5 or punctured (128, k) Reed-Muller code for DFT-S-OFDM based structure
`
`with SF=3.
`
`[007 6]
`
`Accordingly in the case of SF=5, a (48, A) block code which is derived from
`
`a punctured RM (64, k) can be used where A is the payload size of the UCI. The RM
`
`code may be designed such that its codewords are a linear combination of the N basis
`
`sequences denoted M1.,” where N is the maximum number of PUCCH payload bits.
`
`Depending on whether or not DTX is signaled for a DL CC, the value of N could be
`
`between 10-12 bits for the maximum number of aggregated CCs (e.g., 5 DL CCs). The
`
`encoded bit sequence of length 48 at the output of the channel encoder is denoted by
`
`b0,b1,---,b47 where:
`
`Ail
`
`bl. = Zan -Ml.,n ,
`
`Equation (9)
`
`where i = 0, 1, ..., 47 with 0