(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
`
`(19) World Intellectual Property Organization
`International Bureau
`
`(43) International Publication Date
`19 January 2012 (19.01.2012)
`
`PCT
`
`1111111111111111 IIIIII IIIII 111111111111111 II Ill 111111111111111111111111111111111111 IIII IIII IIII
`
`(10) International Publication Number
`WO 2012/008705 A2
`
`(51) International Patent Classification:
`H04B 7/04 (2006.01)
`H04J 11/00 (2006.01)
`
`(21) International Application Number:
`PCT/KRZ0l 1/004933
`
`(22) International Filing Date:
`
`(25) Filing Language:
`
`(26) Publication Language:
`
`6 July 2011 (06.07.2011)
`
`English
`
`English
`
`(30) Priority Data:
`61/364,806
`
`us
`(71) Applicant (for all designated States except US): LG
`ELECTRONICS INC. [KRiK.R]; 20, Yeouido-dong,
`Yeongdeungpo-gu, Seoul 150-721 (KR).
`
`16 July 2010 (16.07.2010)
`
`(72) Inventors; and
`(75) Inventors/Applicants (for US only): LIM, Suhwan [KRi
`KR]; 533, Hogye-Dong, Dongan-Gu, Anyang, Gyeonggi-
`Do 431-080 (KR). JUNG, l\fanyoung [KRiKR]; 533,
`Hogye-Dong, Dongan-Gu, Anyang, Gyeonggi-Do
`431-080 (KR). YANG, Yoonoh [KR/KR]; 533, Hogye-
`
`Dong, Dongan-Gu, Anyang, Gyeonggi-Do 431-080 (KR).
`LEE, Sangwook [KR/KR]; 533, Hogye-Dong, Dongan(cid:173)
`Gu, Anyang, Gyeonggi-Do 431-080 (KR).
`
`(74) Agent: PARK, Jang-Won; 3rd Floor, Shinyoung Wacoal
`Illdg., 49-4 Nonhyun-dong, Gangnam-gu, SEOUL
`135-814 (KR).
`
`(81)
`
`Designated States (unless othenvise indicated, for every
`kind of national protection available): AE, AG, AL, AM,
`AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ,
`CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO,
`DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT,
`HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP,
`KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD,
`ME, MG, MK, lVIN, MW, MX, MY, MZ, NA, NG, NI,
`NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD,
`SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM. TN, TR,
`TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
`
`(84)
`
`Designated States (unless othenvise indicated. for eve1y•
`kind of regional protection available): ARIPO (BW, GH,
`GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG,
`ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ,
`TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK,
`
`[Continued on next page]
`
`(54) Title: TRANSMISSION METHOD AND APPARATUS FOR CARRIER AGGREGATION AND UPLINK MIMO
`
`[Fig. 4]
`110
`
`200
`
`(57) Abstract: A transmission method for carrier ag(cid:173)
`gregation, more particularly, for uplink MIMO and
`carrier aggregation, in a method for transmitting an
`uplink signal by the carrier aggregation in a tenninal
`having at least four antennas, includes receiving a
`grant signal for transmission of the uplink signal, the
`grant signal including hiformation related to use of a
`primary cell and a secondary cell, determining one
`antenna or at least two antennas to use the primary
`cell, determining one antenna or at least two anten -
`nas to use the secondary cell, and transmitting a first
`uplink signal to the primary cell and a second uplink
`signal to the secondary cell using the respective de(cid:173)
`termined antennas.
`
`iiiiiiii
`
`iiiiiiii -
`-iiiiiiii ---
`
`iiiiiiii
`
`-iiiiiiii
`--
`iiiiiiii ---
`
`IPR2019-00047
`Qualcomm 2016, p. 1
`
`

`

`WO 2012/008705 A2 I IIIIIIIIIIIII II llllll lllll lllll lllll 111111111111111 lllll lllll llllllllll llll lllllll 111111111111
`
`EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, Published:
`LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK,
`SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ,
`GW, ML, NIR., NE, SN, TD, TG).
`
`without international search report and to be republished
`upon receipt of that report (Rule 48.2(g))
`
`IPR2019-00047
`Qualcomm 2016, p. 2
`
`

`

`WO 2012/008705
`
`PCT/KR2011/004933
`
`[l]
`
`[2]
`
`[3]
`
`Description
`Title of Invention: TRANSMISSION METHOD AND APPARATUS
`FOR CARRIER AGGREGATION AND UPLINK MIMO
`Technical Field
`The present disclosure relates to transmission for carrier aggregation, and more par-
`ticularly, a transmission method and apparatus for multi-antenna based carrier ag(cid:173)
`gregation.
`Background Art
`MIMO is a shmt term of Multi Input and Multi Output, and indicates an method for
`improving data transmission and reception efficiency by adapting a multiple transmit
`antenna and a multiple receive antenna, breaking with an method using one transmit
`antenna and one receive antenna. That is, the MIMO technology is to implement
`capacity increase and performance improvement by using multiple antennas at a
`transmitting end (transmitter) or a receiving end (receiver) in a wireless commu(cid:173)
`nication system. Here, MIMO is also referred to a multiple antenna (multi-antenna).
`Summarizing the aforementioned, a multi-antenna technology adapts a
`technology of aggregating data segments received via various antennas, without being
`dependent on a single antenna route, in order to receive one entire message. The multi(cid:173)
`antenna technology can improve data rate within a specific range or increase a system
`range for a specific data rate, accordingly, it is an attractive next generation mobile
`communication technology, which can be broadly used for mobile communication
`terminals, relays and the like, namely, expected to overcome throughput limit of
`mobile communications, which has reached the limitation due to data communication
`extension or the like.
`In general, when a transport channel experiences deep fading, if a different
`version or a replica of a transmitted signal is not additionally transmitted, it is difficult
`for a receiver to determine the transmitted signal. A resource corresponding to the
`different version or the replica is referred to as diversity, and is one of the most
`important factors that contribute to reliable transmission over a wireless channel.
`The use of the diversity can maximize data transfer capacity or data transfer re-
`liability. A system for implementing the diversity by using multiple Tx antennas and
`multiple Rx antennas is referred to as a MIMO system or a multiple antenna system.
`A multiple antenna scheme includes space frequency block coding (SFBC), space
`time block coding (STBC), cyclic delay diversity (CDD), frequency switched transmit
`diversity (FSTD), time switched transmit diversity (TSTD), precoding vector
`switching (PVS), spatial multiplexing (SM), generalized cyclic delay diversity
`
`[4]
`
`[5]
`
`[6]
`
`IPR2019-00047
`Qualcomm 2016, p. 3
`
`

`

`WO 2012/008705
`
`2
`
`PCT/KR2011/004933
`
`[7]
`
`[8]
`
`[9]
`
`[10]
`
`[11]
`
`[12]
`
`(GCDD), selective virtual antenna pe1mutation (S-V AP), etc. Such a MIMO scheme
`may also be considered as a measure for improving a data rate and reliability in a com(cid:173)
`munication system having a multiple cell structure.
`LTE-Advanced (LTE-A) system, which is one of systems following three
`generation wireless communication systems, is undergoing a standardization work for
`a terminal, which can support not only the MIMO system but also a Carrier Ag(cid:173)
`gregation (CA), which is a scheme for transmitting more data to a terminal or User
`Equipment (UE) using different multiple carriers. The LTE-A is a technology for ag(cid:173)
`gregating a plurality of unit carriers, which are used in the conventional LTE release-
`8/9, to be used simultaneously. Such technology aims to extending a bandwidth up to
`100 MHz.
`In other words, a carrier, which was defined fully up to 20 MHz in the con-
`ventional LTE release-8/9, is redefined as a component carrier, and one terminal is
`allowed to use maximum 5 component carriers by the caITier aggregation (CA)
`technology. Hereinafter, a terminal is referred to as User Equipment (UE).
`The CA is a way to get high throughput by aggregating a used band for each
`component carrier. There are three types of caITier aggregations which are intra-band
`contiguous aggregation, intra-band non-contiguous aggregation and inter-band non(cid:173)
`contiguous aggregation for LTE-Advanced CA.
`Consequently, in wireless communication systems, such as the LTE-Advanced
`system, following the three generation system, it is very important to provide a UE's
`radio frequency (RF) architecture for supporting a combination of CA and MIMO
`system. However, such UE RF architecture has not been effectively provided yet.
`Disclosure of Invention
`Solution to Problem
`Therefore, an aspect of the detailed description is to provide an apparatus and method
`having UE RF architecmre, capable of effectively supporting a combination system of
`Carrier Aggregation (CA) and an uplink MIMO in a wireless communication system.
`To achieve these and other advantages and in accordance with the purpose of the
`present invention, as embodied and broadly described herein, there is provided a
`transmission method for uplink Multi-Input Multi-Output (MIMO) and Carrier Ag(cid:173)
`gregation (CA), in a method for transmitting an uplink signal by CA in a terminal
`having at least four antennas, the method including receiving a grant signal for
`transmission of an uplink signal, the grant signal including information related to use
`of a primary cell and a secondary cell, determining one antenna or at least two
`antennas to use the primary cell, determining one antenna or at least two antennas to
`use the secondary cell, and transmitting a first uplink signal to the primary cell and a
`
`IPR2019-00047
`Qualcomm 2016, p. 4
`
`

`

`WO 2012/008705
`
`3
`
`PCT/KR2011/004933
`
`fl3l
`
`[14]
`
`[15]
`
`[ 16]
`
`[17]
`
`[18]
`
`[19]
`
`[20]
`[21]
`
`second uplink signal to the secondary cell using the respective determined antennas.
`The antenna to use the primary cell may not overlap the antenna to use the
`secondary cell. When at least two antennas are to use the primary cell, the at least two
`antennas may not be adjacent to each other. When two antennas are to use the
`secondary cell, the at least two antennas may not be adjacent to each other.
`The transmission of the first uplink signal to the primary cell and the second
`uplink signal to the secondary cell using the respective determined antennas may be an
`inter-band or intra-band transmission.
`In accordance with another aspect of the detailed description, there is provided a
`transmission method for uplink Multi-Input Multi-Output (MIMO) and Carrier Ag(cid:173)
`gregation (CA), in a method for transmitting an uplink signal by CA in a terminal
`having at least four antennas, the method including receiving a grant signal for
`transmission of the uplink signal, the grant signal including information related to use
`of a primary cell and a secondary cell, determining at least four antennas to use the
`primary cell at a frame or sub-frame time interval, determining at least two antennas to
`use the secondary cell at a frame or sub-frame time interval, and transmitting a first
`uplink signal to the primary cell and a second uplink signal to the secondary cell using
`the respective determined antennas.
`A time to use the primary cell and a time to use the secondary cell may not
`overlap each other, and when at least two antennas are to use the secondary cell, the at
`least two antennas may not be adjacent to each other.
`The transmission of the first uplink signal to the primary cell and the second
`uplink signal to the secondary cell using the respective determined antennas may be an
`inter-band or intra-band transmission. The sub-frame or frame time interval may be in
`the range of 1 ms (millisecond) to 10 ms (millisecond).
`Advantageous Effects of Invention
`In accordance with the transmission method for uplink MIMO and carrier ag-
`gregation, an efficient connection structure between the carrier aggregation and the
`uplink MIMO may be proposed, which derives an effect of maximizing bandwidth
`expansion in the wireless communication system.
`Brief Description of Drawings
`FIG. 1 is an overview of an intra-band Carrier aggregation (CA)in accordance with
`the related art;
`FIG. 2 is an overview of an inter-band CA in accordance with the related art;
`FIG. 3 is a block diagram illustrating a general UE transmitter (Tx) architecture
`for uplink (UL)-MIMO and CA of a multiple antenna in accordance with the related
`art;
`
`IPR2019-00047
`Qualcomm 2016, p. 5
`
`

`

`WO 2012/008705
`
`4
`
`PCT/KR2011/004933
`
`[22]
`
`[23]
`
`[24]
`
`[25]
`
`[26]
`
`[27]
`
`[28]
`
`[29]
`
`[30]
`
`FIG. 4 is an exemplary view illustrating an operation when using one or two
`transmit (Tx) antennas for each component carrier in a UE architecture adapting an
`effective transmission method proposed for intra/inter-band CA in accordance with one
`exemplary embodiment;
`FIG. 5 is an exemplary view illustrating an operation when using two transmit
`(Tx) antennas for each component carrier in a UE architecture adapting an effective
`transmission method proposed for intra/inter-band CA in accordance with one
`exemplary embodiment;
`FIG. 6 is an exemplary view illustrating an operation when using four transmit
`(Tx) antennas for each component carrier in a UE architecture adapting an effective
`transmission method proposed for intra/inter-band CA in accordance with one
`exemplary embodiment;
`FIG. 7 is an exemplary view illustrating a transmission method when using four
`transmit (Tx) antennas and two transmit antennas for component carriers, respectively,
`in a UE architecture adapting an effective transmission method proposed for intra/
`inter-band CA in accordance with one exemplary embodiment;
`FIG. 8 is a flowchart illustrating a transmission method for uplink MIMO and
`carrier aggregation in accordance with one exemplary embodiment; and
`FIG. 9 is a flowchart illustrating a transmission method for uplink MIMO and
`carrier aggregation in accordance with another exemplary embodiment.
`Mode for the Invention
`Reference will now be made in detail to the preferred embodiments of the present
`invention, examples of which are illustrated in the accompanying drawings. It will also
`be apparent to those skilled in the art that various modifications and variations can be
`made in the present disclosure without departing from the spirit or scope of the
`invention. Thus, it is intended that the present disclosure cover modifications and
`vmiations of this invention provided they come within the scope of the appended
`claims and their equivalents.
`It will be understood that, although the terms first, second, etc. may be used
`herein to describe vmious elements, these elements should not be limited by these
`terms. These terms are only used to distinguish one element from another. For
`example, a first element could be termed a second element, and, similarly, a second
`element could be termed a first element, without departing from the scope of the
`present disclosure. Term 'and/or' may represent a combination of a plurality of related
`disclosed items or any of the plurality of related disclosed items.
`It will be understood that when an element is referred to as being "connected
`with" another element, the element can be directly connected with the other element or
`
`IPR2019-00047
`Qualcomm 2016, p. 6
`
`

`

`WO 2012/008705
`
`5
`
`PCT/KR2011/004933
`
`[31]
`
`[32]
`
`[33]
`
`[34]
`
`[35]
`[36]
`
`[37]
`
`[38]
`
`intervening elements may also be present. In contrast, when an element is referred to as
`being "directly connected with" another element, there are no intervening elements
`present.
`Technical terms used in this specification are used to merely illustrate specific
`embodiments, and should be understood that they are not intended to limit the present
`disclosure. A singular representation may include a plural representation as far as it
`represents a definitely different meaning from the context. Terms 'include' or 'has'
`used herein should be understood that they are intended to indicate an existence of
`features, numbers, steps, operations or components or a combination thereof, disclosed
`in the specification, and it may also be understood that an existence of other features,
`numbers, steps, operations or components or a combination thereof or probability of
`addition thereof should not be excluded in advance.
`As far as not being defined differently, all terms used herein including technical
`or scientific terms may have the same meaning as those generally understood by an
`ordinary person skilled in the mt to which the present disclosure belongs, and should
`not be construed in an excessively comprehensive meaning or an excessively restricted
`meaning.
`Embodiments of the present disclosure will be described below in detail with
`reference to the accompanying drawings where those components are rendered the
`same reference number that are the same or are in correspondence, regardless of the
`figure number, and redundant explanations are omitted.
`Hereinafter, description will be given of several terms used for explaining the
`exemplary embodiments.
`Primary and Secondary Component Carriers in LTE-A System
`Unlike the conventional LTE using one component carrier, a method for ef-
`fectively managing component carriers is more required in the carrier aggregation
`(CA) using a plurality of carriers. For effective management of the component carriers,
`the component carriers may be classified, according to functions and characteristics,
`into a primary component carrier and a secondary component carrier.
`The primary carrier, which is a core of management upon using plural component
`carriers, is defined by one for each UE. Other component carriers except for the one
`primary carrier are defined as secondary component carriers.
`Detailed roles and functions of the primary carrier and the secondary carrier are
`being discussed, but in general, the primary carrier serves as a core carrier for
`managing the entire aggregated component caiTiers, and the other secondary caffiers
`may have high probability to provide additional frequency resources for ensuring
`higher data rate. For example, a radio resource control connection for signaling with a
`UE may be carried out by the primary carrier.
`
`IPR2019-00047
`Qualcomm 2016, p. 7
`
`

`

`WO 2012/008705
`
`6
`
`PCT/KR2011/004933
`
`[39]
`
`[40]
`[41]
`
`[42]
`
`[43]
`
`[44]
`
`[45]
`
`[46]
`
`[47]
`
`[48]
`
`The primary component carrier also plays an essential role with regard to security
`and upper layer information. When one component carrier is actually present, the cor(cid:173)
`responding component carrier may be the primary carrier.
`Primary and Secondary Cells in LTE-A System
`A cell indicates a combination (set) of downlink resources and optionally uplink
`resources. A linking between the carrier frequency of the downlink resources and the
`carrier frequency of the uplink resources is indicated in system information transmitted
`on downlink resources.
`The primary cell (Pcell) may operate on a primary frequency or primary
`component carrier, in which the UE either performs the initial connection estab(cid:173)
`lishment procedure or initiates the connection re-establishment procedure, or the cell
`indicated as the primary cell in the handover procedure. The secondary cell (Scell) may
`operate on a secondary frequency or a secondary component carrier, which may be
`configured once Radio Resource Control (RRC) connection is established, and may be
`useable to provide additional radio resources.
`FIG. 1 is an overview of an intra-band Carrier aggregation (CA) in accordance
`with the related art.
`FIG. IA illustrates an intra-band contiguous CA, and FIG. lB illustrates an intra-
`band non-contiguous CA. Here, f1J'u and fnu indicate an uplink carrier frequency and a
`downlink carrier frequency of the first component carrier, respectively, and fn 2 and f
`nL2 indicate an uplink carrier frequency and a downlink carrier frequency of the second
`component carrier, respectively.
`An LTE-Advanced (LTE-A) adapts various schemes including uplink MIMO and
`CA to implement high-speed radio transmission. The CA discussed in the LTE-A may
`be divided into the intra-band contiguous CA illustrated in FIG. lA, and the intra-band
`non-contiguous CA illustrated in FIG. lB.
`FIG. 2 is an overview of an inter-band CA in accordance with the related art.
`FIG. 2A illustrates a combination of a low band and a high band for the inter-band CA,
`and FIG. 2B illustrates a combination of similar frequency bands for the inter-band
`CA.
`
`That is, the inter-band CA of FIG. 2 may be divided into an inter-band CA
`among low-band cai-riers and high-band carriers, which have different Radio
`Frequency (RF) characteristics, as illustrated in FIG. 2A, and an inter-band CA of
`similar frequencies, which have similar RF characteristics and thus can use a common
`RF terminal for each component carrier, as illustrated in FIG. 2B.
`In FIG. 2B, the left side shows the non-contiguous cairier aggregation in Band 18
`and Band 19 in the following Table 1, and the right side shows the switching UL/DL
`transmission band in Band 13 and Band 14.
`
`IPR2019-00047
`Qualcomm 2016, p. 8
`
`

`

`WO 2012/008705
`
`[49]
`
`Table 1
`fTable 11
`
`7
`
`PCT/KR2011/004933
`
`E-UTRA
`Ope rating
`Band
`
`Uplink (UL) operating band
`BS receive
`UE transmit
`FUL_high
`-
`
`FUL low
`
`Downlink (DL) operating band
`BS transmit
`UE recei\ie
`FDL_high
`-
`
`FOL low
`
`Duplex
`Mode
`
`1
`
`2
`
`3
`
`4
`
`5
`
`6 N-1
`
`7
`
`8
`
`9
`
`-
`
`-
`-
`
`-
`
`-
`
`-
`
`-
`
`-
`
`1920 MHz
`
`1850 MHz
`
`1710 MHz
`
`1710 MHz
`
`824 MHz
`
`830 MHz
`
`2500 MHz
`
`880 MHz
`
`1749.9 MHz
`
`1710 MHz
`
`1980 MHz
`
`2110 MHz
`
`1910 MHz
`
`1930 MHz
`
`1785 MHz
`
`1805 MHz
`
`1755 MHz
`
`2110MHz
`
`849 MHz
`
`869 MHz
`
`840 MHz
`
`875 MHz
`
`2570 MHz
`
`2620 MHz
`
`915 MHz
`
`925 MHz
`
`1784.9 Hz
`
`1844.9 MHz
`
`-
`
`-
`-
`
`-
`
`-
`
`-
`
`-
`
`-
`
`2170 MHz
`
`1990 MHz
`
`1880 MHz
`
`2155 MHz
`
`894 MHz
`
`885 MHz
`
`2690 MHz
`
`960 MHz
`
`1879.9 Hz
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`-
`-
`-
`
`-
`-
`-
`
`-
`-
`-
`
`1427.9 MHz
`
`698 MHz
`
`777 MHz
`
`788 MHz
`
`Reser11ed
`
`Rese r>1ed
`
`704 MHz
`
`815 MHz
`
`830 MHz
`
`832 MHz
`
`1770 MHz
`
`2110 MHz
`
`1447.9 Hz
`
`1475.9 MHz
`
`716 MHz
`
`728 MHz
`
`787 MHz
`
`746 MHz
`
`798 MHz
`
`758 MHz
`
`Reser11ed
`
`Reser11ed
`
`716 MHz
`
`734 MHz
`
`830 MHz
`
`860 MHz
`
`845 MHz
`
`875 MHz
`
`862 MHz
`
`791 MHz
`
`-
`-
`-
`
`-
`-
`-
`
`-
`-
`-
`
`1447.9 MHz
`[3410] MHz
`
`1462.9 Hz
`[3500] Hz
`
`1495.9 MHz
`[3510) MHz
`
`2170 MHz
`
`1495.9 MHz
`
`745 MHz
`
`756 MHz
`
`768 MHz
`
`746 MHz
`
`875 MHz
`
`890 MHz
`
`821 MHz
`
`1510.9Hz
`[3600] MHz
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`
`FDD
`FDD
`
`10
`
`11
`
`12
`
`13
`
`14
`
`15
`
`16
`
`17
`
`18
`
`19
`
`20
`
`21
`
`22
`
`...
`
`~Jote 1 • Band 6 is not applicable.
`
`[50]
`
`[51]
`
`rs21
`
`FIG. 3 is a block diagram illustrating a general UE transmitter architecture for com-
`bination of uplink (UL) MIMO and CA of a multiple antenna in accordance with the
`related art.
`The general UE transmitter architecture illustrated in FIG. 3 may include a
`component cm,;er (CC) information bit part l 00, a digital-to-analog conve1ter (DAC)
`200, an uplink frequency converter 300, a power amplifier (PA) 400, a uuplexer 500,
`an antenna 10 and the like. FIG. 3 illustrates a general UE transmitter architecture for
`the combination of UL-MIMO anJ CA (i.e .. inter-ban<l non-contiguous CA an<l intra(cid:173)
`band non-contiguous CA) to support an UL MIMO transmission mode for Rel-10
`L TE-A system.
`If it is assumed that the number of transmitter (Tx) antennas for UL-MIMO is 4
`
`IPR2019-00047
`Qualcomm 2016, p. 9
`
`

`

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`and a UE power class is 3, it indicates that the UE's maximum output power is 23 dBm
`for total transmission bandwidth as defined in TS36.101. Here, UE's total transmit
`power per each component carrier should be less than UE maximum output power (23
`dBm in power class 3).
`Each UE architecture illustrated in FIGS. 4 to 7 may include component carrier
`information bit parts 110, 120 (FIGS. 4 and 5), a DAC 200, an uplink frequency
`converter 300, a PA 400, a duplexer 500, a diplexer 600, a low pass filter (LPF) 700, a
`low noise amplifier (LNA) 800, a downlink frequency converter 310, an analog(cid:173)
`to-digital converter (ADC) 900, antennas 10, 20, 30 and 40, and the like.
`Here, the duplexer 500 may be used for division between transmitter (UL of UE)
`and a receiver (DL of UE) of two bands, and the diplexer 900 may be used for division
`between a component can-ier 1 (CCI) 110 and a component carrier 2 (CC2) 120 in an
`inter-band.
`FIG. 4 is an exemplary view illustrating an operation when using one or two
`transmit antennas for each component earlier in a UE architecture adapting an effective
`transmission method proposed for intra/inter-band CA in accordance with one
`exemplary embodiment.
`If antennas are designed to be configured in a narrow spacing, the antenna
`separation distance should be enlarged to minimize the spatial correlation between
`signals of respective component carriers (for example, CCI and CC2 or a primary cell
`and a secondary cell). In this specification, as illustrated in FIG. 4, in order to
`maximize the antenna separation distance for each component carrier (for example,
`CCI and CC2 or primary cell and secondary cell), UE signal from the CCI 110 is
`transmitted by the first antenna 10 or the third antenna 30 for UL-MIMO, and UE
`signal from the CC2 120 is transmitted by the second antenna 20 and the fourth
`antenna 40 for the UL-MIMO.
`In general, UE UL transmission mode is defined from channel quality of each
`component carrier, and then a UL antenna configuration for each component can-ier is
`determined (settled) by UL scheduling grant. If CCI 110 is configured with Rel-8
`compatible transmission (using one transmit antenna) and CC2 120 is configured with
`spatial multiplexing for uplink or two transmit antenna diversity mode, the CCI 110
`may be configured with the first antenna 10 and the CC2 120 may be configured with
`the second antenna 20 and the fourth antenna 40, as illustrated in FIG. 4, for
`minimizing the spatial correlation between the component carriers.
`Here, the total maximum output power of the first to fourth antennas 10, 20, 30,
`40 is less than or equal to 23 dBm in power class 3. So, the total output power of each
`component carrier for UL-MIMO transmission is less than or equal to 20 dBm.
`FIG. 5 is an exemplary view illustrating an operation when using two transmit
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`[54]
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`[55]
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`[56]
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`[57]
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`[59]
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`IPR2019-00047
`Qualcomm 2016, p. 10
`
`

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`9
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`[60]
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`[62]
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`[63]
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`[64]
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`[65]
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`[66]
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`[67]
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`antennas for each component carrier in a UE architecture adapting an effective
`transmission method proposed for intra/inter-band CA in accordance with one
`exemplary embodiment.
`In the case of FIG. 5, each component carrier (for example, CCI and CC2 or a
`primmy earlier and a secondmy carrier) may be configured with two transmit (Tx)
`antenna diversity mode or a spatial multiplexing for UL-MIMO. Also, to minimize the
`spatial correlation between component carrier signals, the CC 1 110 may be configured
`with the first and third antennas 10 and 30, and the CC2 120 may be configured with
`the second and fourth antennas 20 and 40.
`Here, the summed maximum output power of the first antenna 10 and the third
`antenna 30 for the CC 1 110 is less than or equal to 20 dBm, and also the summed
`maximum output power of the second antenna 20 and the fourth antenna 40 for the
`CC2 120 is les than or equal to 20 dBm.
`FIG. 6 is an exemplary view illustrating an operation when using four transmit
`antennas for each component carrier (for example, CCI and CC2 or a primary carrier
`and a secondary earlier) in a UE m-chitecture adapting an effective transmission
`method proposed for intra/inter-band CA in accordance with one exemplmy em(cid:173)
`bodiment.
`In FIG. 6, all UE transmit (Tx) antennas are used for UL-MIMO in one
`component carrier. Here, the maximum output power of each antenna is less than or
`equal to 17 dBm.
`Refemng to FIGS. 4 and 5, each antenna may be mapped to each component
`earlier even when the separation bandwidth of each component carrier is more than
`100 MHz. In other words, if the operating range of one PA 400 and one duplexer 500
`can support the current component canier combination as illustrated in FIGS. IA, lB
`and FIG. 2B, the same PA 400 and duplexer 500 may be used, and in this case, the
`diplexer 600 is not needed.
`If the operating range of one PA 400 and one duplexer 500 cannot support the
`current component earlier combination as illustrated in FIG. 2A, other PA, duplexer
`and diplexer may be used as illustrated in FIGS. 4 to 6.
`FIG. 7 is an exemplary view illustrating a transmission method when using four
`transmit antennas and two transmit antennas for respective component earlier in a UE
`architecture adapting an effective transmission method proposed for intra/inter-band
`CA in accordance with one exemplary embodiment.
`As illustrated in FIG. 6, the UE can transmit information data related to a single
`component carrier in an instant time. That is, as illustrated in FIG. 7 A, a multiple
`component carrier transmission is not applicable when the UE receives UL scheduling
`grant for four Tx transmission mode for the CC 1 110.
`
`IPR2019-00047
`Qualcomm 2016, p. 11
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`10
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`[68]
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`[70]
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`[72]
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`[73]
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`[74]
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`[75]
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`Therefore, the UE architecture and the effective transmission method proposed in
`FIG. 7, can be extended to support the combination of UL-MIMO and intra-band CA
`for LTE-A system with switching each component carrier per sub-frame or frame unit.
`For example, if the CCI 110 is configured with four Tx diversity mode or a
`spatial multiplexing for UL-MIMO as illustrated in FIG. 7 A and the CC2 120 is
`configured with the first antenna 10, the second antenna 20 or the third antenna 30 for
`UL transmission, the proposed UE architecture and effective transmission method can
`be available to make the component carrier configured with the antenna by switching
`each component carrier according to the frame or sub-frame as illustrated in FIG. 7C.
`The transmission method may be applicable to a general UE architecture having
`an individual RF chain for each component carrier. In this UE structure, the CCl 110
`may be configured with four Tx antennas for UL-MIMO transmission at the first
`frame, and transmission of the CC 1 110 is off in the beginning of the second sub
`frame. The CC2 120 is on at the second sub frame and configured with two Tx
`antennas for UL-MIMO transmission as illustrated in FIG. 7.
`In general, a power transient time between one RF chain and another RF chain is
`assumed at 17 us ~ 1 ms. In the proposed transmission method for the CA and the UL(cid:173)
`MIM O system, the flexible switching time according to a sub frame or frame unit is
`longer than the transit time, so the transmission method can be applicable with the
`flexible switching time according to the sub-frame (1 ms) or frame (10 ms) unit.
`FIG. 8 is a flowchart illustrating a transmission method for uplink MIMO and
`carrier aggregation in accordance with one exemplary embodiment.
`The transmission method for uplink MIMO and carrier aggregation may include
`receiving a grant signal for transmission of an uplink signal, the grant signal including
`infmmation related to use of a primary cell and a secondary cell (S800), determining
`one antenna or at least two antennas to use the primary cell (S810), determining one
`antenna or at least two antennas to use the secondary cell (S820), and transmitting a
`first uplink signal to the primary cell and a second uplink signal to the secondary cell
`using the determined respective antennas (S830).
`FIG. 9 is a flowchart illustrating a transmission method for uplink MIMO and
`carrier aggregation in accordance with another exemplary embodiment.
`The transmission method for uplink MIMO and carrier aggregation may include
`receiving a grant signal for transmission of the uplink signal (S900), the grant signal
`including information related to use of a primary cell and a secondary cell, determining
`at least four antennas to use the primary cell at a frame or sub-frame time interval
`(S910), determining at least two antennas to use the secondaiy cell at a frame or sub(cid:173)
`frame time interval (S920), and transmitting a first uplink signal to the primaiy cell and
`a second uplink signal to the secondary cell using the determined respective antennas
`
`IPR2019-00047
`Qualcomm 2016, p. 12
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`f761
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`[77]
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`[78]
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`[79]
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`[80]
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`(S930).
`In accordance with one exemplary embodiment, the present disclosure provides a
`transmission method for uplink Multi-Input Multi-Output (MIMO) and Carrier Ag(cid:173)
`gregation (CA), in a method for transmitting an uplink signal by CA i