(12) United States Patent
`Han et al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 9,161,254 B2
`Oct. 13, 2015
`
`USOO916 1254B2
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`28:8: A 1933
`at
`al. r 370,241
`(Continued)
`
`FOREIGN PATENT DOCUMENTS
`WO WO 2012/OO8815
`1, 2012
`WO WO2012/011718
`* 1, 2012
`(Continued)
`OTHER PUBLICATIONS
`
`International Search Report and Written Opinion received for PCT
`Patent Application No. PCT/US2013/060020, mailed on Dec. 19,
`2013, 12 Pages.
`
`Primary Examiner — Ayaz Sheikh
`Assistant Examiner — Peter Chau
`(74) Attorney, Agent, or Firm — Thorpe North & Western
`LLP
`
`(54) PERIODIC CHANNEL STATE INFORMATION
`REPORTING FOR TIME DIVISION DUPLEX
`(TDD) CARRIERAGGREGATION SYSTEMS
`(71) Applicant: INTE, CORPORATION, Santa Clara,
`(US)
`(72) Inventors: Seunghee Han, Anyangshi (KR); Hong
`He, Beijing (CN); Jong-Kae Fwu,
`Sunnyvale, CA (US); Alexei Davydov,
`Nizhny Novgorod (RU); Ilya Bolotin,
`Nizhny Novgorod (RU)
`(73) Assignee: INTEL CORPORATION, Santa Clara,
`CA (US)
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 147 days.
`(21) Appl. No.: 13/886.795
`
`(*) Notice:
`
`(22) Filed:
`(65)
`
`May 3, 2013
`Prior Publication Data
`US 2014/0092787 A1
`Apr. 3, 2014
`Related U.S. Application Data
`(60) Provisional application No. 61/707,784, filed on Sep.
`28, 2012.
`
`(51) Int. Cl.
`H0472.4/10
`H04/48/4
`
`(2009.01)
`(2009.01)
`(Continued)
`
`ABSTRACT
`(57)
`Technology for periodic channel state information (CSI)
`reporting is disclosed. One method can include a user equip
`ment (UE) identifying a configured CSI reporting instance for
`a secondary cell to report the periodic CSI to a node based on
`a CSI reporting configuration of the secondary cell. The UE
`can determine that the configured CSI reporting instance of
`the secondary cell used to report the periodic CSI does not
`correspond with an uplink (UL) subframe of a primary cell.
`The UE can transmit the periodic CSI report for the secondary
`cell, to the node, using a physical uplink shared channel
`(52) U.S. Cl.
`g a phy
`p
`(PUSCH) on the secondary cell when the periodic CSI report
`CPC .............. H04W 24/10 (2013.01); H04 W48/14
`(2013.01). H04W 52/0209 (2013.01); H04W ing instance for the secondary cell does not correspond with
`52/0212 (2013.01); H04 W 36/08 (2013.01);
`the UL subframe of the primary cell and an UL-SCH (Uplink
`(Continued)
`Shared Channel) is available in a subframe that corresponds
`(58) Field of Classification Search
`to the periodic CSI reporting instance of the secondary cell.
`None
`See application file for complete search history.
`
`7 Claims, 12 Drawing Sheets
`
`f N.
`
`sts.
`sers.
`assrs.
`14 AA- 3 V-2 5 V-g
`8 R3s S R3s
`is
`3S
`F SCS 80 SCS 30 SCS
`2.
`2
`24
`
`
`
`as-rrrrrrrrrrrrrrrrse
`O V-2
`5 RSS
`8 SCS
`26
`
`5 viz
`75 R3s
`900 SCS
`28
`
`20 Mi-g
`RSS
`1200 subcarriers (SCS)
`
`IPR2019-00128
`Qualcomm 2013, p. 1
`
`

`

`US 9,161.254 B2
`Page 2
`
`(51) Int. Cl.
`HO4W 52/02
`HO4W 36/08
`HO4W 48/18
`(52) U.S. Cl.
`CPC .......... H04W 48/18 (2013.01); H04W 52/0261
`(2013.01); Y02B 60/50 (2013.01)
`
`(2009.01)
`(2009.01)
`(2009.01)
`
`(56)
`
`References Cited
`U.S. PATENT DOCUMENTS
`
`2011/0268045 A1* 11/2011 Heo et al. ...................... 370,329
`2012,0002568 A1
`1/2012 Tiirola et al.
`2012/0076028 A1
`3/2012 Ko et al. ....................... 370,252
`2012/0106511 A1* 5, 2012
`370,331
`2012/O127869 A1* 5, 2012 Yin et al. ...................... 370,252
`2012/0134275 A1
`5, 2012
`2012/0140649 A1* 6/2012 Choudhury et al. .......... 370/252
`2012/0140708 A1* 6/2012 Choudhury et al. .......... 370/328
`2012/018291.0 A1* 7, 2012 Nakashima et al. .......... 370/281
`2012/0201154 A1* 8/2012 Chandrasekhar et al. ... 370/252
`
`
`
`ang et al. ....................
`
`2012fO257524 A1* 10/2012 Chen et al. .................... 370,252
`58:56:8. A '58E SE.O. 285
`58.3556: A
`501 SNinvie A.
`2013/0039231 A1* 2/2013 Wang ............................ 370,280
`2013/0064211 A1
`3/2013 Tanaka
`2013/0114455 A1
`5/2013 Yoo et al. ...................... 370,252
`2013/0114554 A1
`5/2013 Yang et al.
`2013/0148613 A1* 6, 2013 Han et al. ...................... 370,329
`2013/0188591 A1* 7, 2013 KO et al. ....................... 370,329
`2013,0286904 A1 10, 2013 Xu et al.
`2014/0016714 A1
`1/2014 Chen et al.
`2014/0169300 A1
`6/2014 Kim et al.
`2014/0247798 A1* 9, 2014 Lunttila et al. ................ 370,329
`2014/028.6296 A1* 9, 2014 Tirola et al. ................. 370,329
`
`FOREIGN PATENT DOCUMENTS
`
`2012/091342 A2
`WO
`2012/O99369 A2
`WO
`2014/052084 A1
`WO
`* cited by examiner
`
`7, 2012
`7, 2012
`4, 2014
`
`IPR2019-00128
`Qualcomm 2013, p. 2
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 1 of 12
`
`US 9,161,254 B2
`
`N. In
`
`hi?
`
`assrs. serse assrs.
`ass
`sers-
`5 Virg
`14 Wii. 3
`2
`O V-2
`15 viz
`8 R3s 5 R3s. 25 FRES
`5 RSS
`75 R3s
`F SCS 80 SCS 300 SCS
`6}} SECS
`900 SCS
`2.
`24
`28
`28
`
`
`
`FG,
`
`20 Viz
`RSS
`1200 subcarriers (SCs)
`
`IPR2019-00128
`Qualcomm 2013, p. 3
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 2 of 12
`
`US 9,161,254 B2
`
`Component Carriers
`
`
`
`
`
`Carrier 2
`
`FG, 2A
`
`Frequency
`
`
`
`Component Carriers
`
`
`
`
`
`Carrier
`
`
`
`
`
`Frequency
`
`G. 23
`
`
`
`Compo?ert Carriers
`
`
`
`
`
`3aino A
`
`
`
`
`
`
`
`Said C.
`
`
`
`Frequency
`
`FG. 2C
`
`IPR2019-00128
`Qualcomm 2013, p. 4
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 3 of 12
`
`US 9,161,254 B2
`
`
`
`E (and network) configuration
`
`Frequency
`
`Network only configuration
`
`FG, 3A
`
`
`
`Frequency
`
`IPR2019-00128
`Qualcomm 2013, p. 5
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 4 of 12
`
`US 9,161,254 B2
`
`10ms radio frame, TF 100
`
`11 Oi
`
`
`
`
`
`
`
`
`
`
`
`
`
`UL Nimb SC-FDMA
`-- Symbols = 7
`
`Resource
`Block
`(RB)
`
`
`
`od
`
`e & g
`
`
`
`ca
`
`FIG. 4
`
`SC-FDMA
`Symbol 142
`-Ho
`
`Resource
`Element
`(RE)
`140i
`
`Subcarrier
`15kHz
`146
`
`bit #0 bit #1
`150a | 15Ob
`
`RE (k,I)
`
`IPR2019-00128
`Qualcomm 2013, p. 6
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 5 of 12
`
`US 9,161,254 B2
`
`
`
`IPR2019-00128
`Qualcomm 2013, p. 7
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 6 of 12
`
`US 9,161,254 B2
`
`
`
`FCC-
`Reporting
`ye
`
`Reported
`
`Oce State
`
`Mode 1-t
`(bits: BP)
`
`Pucci Reporting iodies
`Mode 2-i
`Mode 1-0 Mode 2-0
`(isits;8F
`(bitsis)
`(sitsi 3F)
`
`X
`
`Sub-iac
`C
`
`Sub-iac
`Ci i Second
`y
`
`Wideband
`CQ Pi
`
`Widebard
`is i?
`
`2 antea ports Ri
`4 antenna ports R = 1
`
`4 anteina ports Ri >
`8 arterina ports Ri < 3
`8 arteria ports 2 K. Ri < 3
`3 arteria ports Rise 8
`
`Widebard ...
`8 antea ports K.
`Coif second T. . . . . . . .
`8 ante a ports Ri r 4
`y
`
`Widebard
`CQ: first
`Phili Second 8 arterina ports 4 & R < 7
`8 arterina ports R = 8
`2.f4 aftenna pits, 2-layer
`Spatia nultiplexing
`8 aritérifa ports, 2-ayer
`Spatia utigexig
`
`spatia in tiplexing
`8ainteria ports, 4-ayer
`Spatia in itiplexig
`8-layer spatial initipexing
`
`G. 6
`
`IPR2019-00128
`Qualcomm 2013, p. 8
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 7 of 12
`
`US 9,161,254 B2
`
`
`
`CQi Piti
`
`M
`
`COI F$1
`
`< 38
`
`18C
`
`ico, , p r 156
`
`Reseived
`
`G. 7
`
`IPR2019-00128
`Qualcomm 2013, p. 9
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 8 of 12
`
`US 9,161,254 B2
`
`
`
`TOD U
`Configuration 2
`
`DD U
`Configuration 1
`
`Fi
`% CSI Report for Primary Cell
`
`:::::::
`::) : CSI Report for Secondary Cell
`
`FG. 8
`
`IPR2019-00128
`Qualcomm 2013, p. 10
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 9 of 12
`
`US 9,161,254 B2
`
`30 N
`
`
`
`identify a reporting period and ar.
`offset period for a secondary celi to
`report the periodic CS to an evolved
`node 8 (e^8) based on a CS
`reporting configuration of the
`secondary ce.
`
`Determire that an uplink (...)
`subframe of a primary celi used to
`report the periodic CS using a
`Physical pink Controi Channel
`(PUCCH) on the primary ceil
`Corresponds to a periodic CS
`reporting instance of the secondary
`ce, the reporting instance being
`determired based on the reporting
`period and the offset period for the
`secondary ce:
`
`9
`
`92
`
`Transmit the periodic CS report for
`the secondary ceil, to the eN8, using
`the PUCCH or the primary cell.
`
`A 930
`
`FG 9
`
`IPR2019-00128
`Qualcomm 2013, p. 11
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 10 of 12
`
`US 9,161,254 B2
`
`
`
`OOO N
`identify, at a user equipment (E), a
`configured CS reporting instance for
`a secondary cell to report the periodic
`CS to a node based on a CS
`reporting configuration of the
`Secordary ce.
`
`Determine that the configured CS
`reporting instance of the secondary
`ce used to report the periodic CS
`does not correspond with air up irk
`(...) subframe of a primary Cei
`
`X
`
`O2)
`
`Determine that the configured CS
`reporting instance on the secondary
`ce used to report the periodic CS
`includes a physical upink shared
`charine (PJSCH)
`
`Y 1030
`
`transmit the periodic CS report for
`the secondary cel, to the node, using
`the PSC on the secondary cell
`when the periodic CS reporting
`instance for the secondary cell does
`not correspond with the U. subframe
`of the primary ceili and an i-SC
`(pink Shared Channel) is available
`in a subfrate that corresponds to the
`periodic CS reporting instance of the
`secondary ce.
`
`FG. O
`
`C4
`
`IPR2019-00128
`Qualcomm 2013, p. 12
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 11 of 12
`
`US 9,161,254 B2
`
`10
`
`asceiver
`Module
`16
`
`Processing
`vice
`a
`
`
`
`fire&SS
`evice
`12
`
`ransceiver
`wide
`
`Processing
`ificate
`2
`
`a
`
`F.G. 1
`
`Cooperation
`Node
`1 30
`
`
`
`fansceiver
`Moise
`138
`
`Processing
`house
`34.
`
`IPR2019-00128
`Qualcomm 2013, p. 13
`
`

`

`U.S. Patent
`
`Oct. 13, 2015
`
`Sheet 12 of 12
`
`US 9,161,254 B2
`
`wipe
`Antennas
`
`
`
`Speaker
`
`M
`
`liquid Crysta isplay
`(CER) Screen andfor
`such Screen Display
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`- ,
`Speaker
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`
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`
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`.
`
`1.
`
`Microphore
`
`FG. 2
`
`IPR2019-00128
`Qualcomm 2013, p. 14
`
`

`

`US 9,161,254 B2
`
`1.
`PERIODIC CHANNEL STATE INFORMATION
`REPORTING FOR TIME DIVISION DUPLEX
`(TDD) CARRIERAGGREGATION SYSTEMS
`
`RELATED APPLICATIONS
`
`The present application claims priority to U.S. Provisional
`Patent Application No. 61/707,784, filed Sep. 28, 2012, the
`entire specification of which is hereby incorporated by refer
`ence in its entirely for all purposes.
`
`10
`
`BACKGROUND
`
`2
`junction with the accompanying drawings, which together
`illustrate, by way of example, features of the disclosure; and,
`wherein:
`FIG. 1 illustrates a block diagram of various component
`carrier (CC) bandwidths in accordance with an example:
`FIG. 2A illustrates a block diagram of multiple contiguous
`component carriers in accordance with an example;
`FIG. 2B illustrates a block diagram of intra-band non
`contiguous component carriers in accordance with an
`example;
`FIG. 2C illustrates a block diagram of inter-band non
`contiguous component carriers in accordance with an
`example;
`FIG. 3A illustrates a block diagram of a symmetric-asym
`metric carrier aggregation configuration in accordance with
`an example:
`FIG. 3B illustrates a block diagram of an asymmetric
`symmetric carrier aggregation configuration in accordance
`with an example;
`FIG. 4 illustrates a block diagram of uplink radio frame
`resources (e.g., a resource grid) in accordance with an
`example;
`FIG.5 illustrates a block diagram of frequency hopping for
`a physical uplink control channel (PUCCH) in accordance
`with an example;
`FIG. 6 illustrates a table of physical uplink control channel
`(PUCCH) reporting types per PUCCH reporting mode and
`mode state in accordance with an example;
`FIG. 7 is a table for determining a periodicity value (N)
`and an offset value (Norset co.) according to a CQI-PMI
`configuration index parameter (Icore) in accordance with
`an example:
`FIG. 8 illustrates periodic channel state information (CSI)
`reporting subframes for a primary cell and a secondary cell
`with different Time Division Duplex (TDD) uplink-downlink
`(UL-DL) configurations in accordance with an example:
`FIG.9 depicts functionality of computer circuitry of a user
`equipment (UE) operable to report periodic channel state
`information (CSI) in accordance with an example;
`FIG. 10 depicts a flow chart of a method for periodic
`channel state information (CSI) reporting at a wireless device
`in accordance with an example;
`FIG. 11 illustrates a block diagram of a serving node, a
`coordination node, and wireless device in accordance with an
`example, and
`FIG. 12 illustrates a diagram of a wireless device (e.g., UE)
`in accordance with an example.
`Reference will now be made to the exemplary embodi
`ments illustrated, and specific language will be used hereinto
`describe the same. It will nevertheless be understood that no
`limitation of the scope of the invention is thereby intended.
`
`DETAILED DESCRIPTION
`
`Before the present invention is disclosed and described, it
`is to be understood that this invention is not limited to the
`particular structures, process steps, or materials disclosed
`herein, but is extended to equivalents thereof as would be
`recognized by those ordinarily skilled in the relevant arts. It
`should also be understood that terminology employed herein
`is used for the purpose of describing particular examples only
`and is not intended to be limiting. The same reference numer
`als in different drawings represent the same element. Num
`bers provided in flow charts and processes are provided for
`
`15
`
`Wireless mobile communication technology uses various
`standards and protocols to transmit data between a node (e.g.,
`a transmission station) and a wireless device (e.g., a mobile
`device). Some wireless devices communicate using orthogo
`nal frequency-division multiple access (OFDMA) in a down
`link (DL) transmission and single carrier frequency division
`multiple access (SC-FDMA) in an uplink (UL) transmission.
`Standards and protocols that use orthogonal frequency-divi
`sion multiplexing (OFDM) for signal transmission include
`the third generation partnership project (3GPP) long term
`evolution (LTE), the Institute of Electrical and Electronics
`Engineers (IEEE) 802.16 standard (e.g., 802.16e, 802.16m),
`which is commonly known to industry groups as WiMAX
`25
`(Worldwide interoperability for Microwave Access), and the
`IEEE 802.11 standard, which is commonly known to industry
`groups as WiFi.
`In 3GPP radio access network (RAN) LTE systems, the
`node can be a combination of Evolved Universal Terrestrial
`30
`Radio Access Network (E-UTRAN) Node Bs (also com
`monly denoted as evolved Node Bs, enhanced Node Bs, eNo
`deBs, or eNBs) and Radio Network Controllers (RNCs),
`which communicates with the wireless device, known as a
`user equipment (UE). The downlink (DL) transmission can
`be a communication from the node (e.g., eNodeB) to the
`wireless device (e.g., UE), and the uplink (UL) transmission
`can be a communication from the wireless device to the node.
`In homogeneous networks, the node, also called a macro
`node, can provide basic wireless coverage to wireless devices
`in a cell. The cell can be the area in which the wireless devices
`are operable to communicate with the macro node. Hetero
`geneous networks (HetNets) can be used to handle the
`increased traffic loads on the macro nodes due to increased
`usage and functionality of wireless devices. HetNets can
`include a layer of planned high power macro nodes (or macro
`eNBs) overlaid with layers of lower power nodes (small
`eNBs, micro-eNBs, pico-eNBs, femto-enBs, or home eNBs
`HeNBs) that can be deployed in a less well planned or even
`entirely uncoordinated manner within the coverage area (cell)
`of a macro node. The lower power nodes (LPNs) can gener
`ally be referred to as “low power nodes', small nodes, or
`Small cells.
`The macro node can be used for basic coverage. The low
`power nodes can be used to fill coverage holes, to improve
`capacity in hot-Zones or at the boundaries between the macro
`nodes coverage areas, and improve indoor coverage where
`building structures impede signal transmission. Inter-cell
`interference coordination (ICIC) or enhanced ICIC (eICIC)
`may be used for resource coordination to reduce interference
`between the nodes, such as macro nodes and low power nodes
`in a HetNet.
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`Features and advantages of the disclosure will be apparent
`from the detailed description which follows, taken in con
`
`65
`
`IPR2019-00128
`Qualcomm 2013, p. 15
`
`

`

`US 9,161,254 B2
`
`3
`clarity in illustrating steps and operations and do not neces
`sarily indicate a particular order or sequence.
`
`EXAMPLE EMBODIMENTS
`
`10
`
`15
`
`25
`
`30
`
`35
`
`An initial overview of technology embodiments is pro
`vided below and then specific technology embodiments are
`described in further detail later. This initial summary is
`intended to aid readers in understanding the technology more
`quickly but is not intended to identify key features or essential
`features of the technology nor is it intended to limit the scope
`of the claimed subject matter.
`An increase in the amount of wireless data transmission
`has created congestion in wireless networks using licensed
`spectrum to provide wireless communication services for
`wireless devices, such as Smartphones and tablet devices. The
`congestion is especially apparent in high density and high use
`locations such as urban locations and universities.
`One technique for providing additional bandwidth capac
`ity to wireless devices is through the use carrier aggregation
`of multiple smaller bandwidths to form a virtual wideband
`channel at a wireless device (e.g., UE). In carrier aggregation
`(CA) multiple component carriers (CC) can be aggregated
`and jointly used for transmission to/from a single terminal.
`Carriers can be signals in permitted frequency domains onto
`which information is placed. The amount of information that
`can be placed on a carrier can be determined by the aggre
`gated carrier's bandwidth in the frequency domain. The per
`mitted frequency domains are often limited in bandwidth.
`The bandwidth limitations can become more severe when a
`large number of users are simultaneously using the band
`width in the permitted frequency domains.
`FIG. 1 illustrates a carrier bandwidth, signal bandwidth, or
`a component carrier (CC) that can be used by the wireless
`device. For example, the LTECC bandwidths can include: 1.4
`MHz 210, 3 MHz 212, 5 MHz, 214, 10 MHz 216, 15 MHz 218,
`and 20 MHZ 220. The 1.4 MHZ CC can include 6 resource
`blocks (RBs) comprising 72 subcarriers. The 3 MHz CC can
`include 15 RBs comprising 180 subcarriers. The 5 MHz CC
`can include 25 RBs comprising 300 subcarriers. The 10 MHz
`40
`CC can include 50 RBs comprising 600 subcarriers. The 15
`MHz. CC can include 75RBs comprising 900 subcarriers. The
`20 MHz CC can include 100 RBs comprising 1200 subcarri
`CS.
`Carrier aggregation (CA) enables multiple carrier signals
`to be simultaneously communicated between a users wire
`less device and a node. Multiple different carriers can be used.
`In some instances, the carriers may be from different permit
`ted frequency domains. Carrier aggregation provides a
`broader choice to the wireless devices, enabling more band
`width to be obtained. The greater bandwidth can be used to
`communicate bandwidth intensive operations, such as
`streaming video or communicating large data files.
`FIG. 2A illustrates an example of carrier aggregation of
`continuous carriers. In the example, three carriers are con
`tiguously located along a frequency band. Each carrier can be
`referred to as a component carrier. In a continuous type of
`system, the component carriers are located adjacent one
`another and can be typically located within a single frequency
`band (e.g., band A). A frequency band can be a selected
`frequency range in the electromagnetic spectrum. Selected
`frequency bands are designated for use with wireless com
`munications such as wireless telephony. Certain frequency
`bands are owned or leased by a wireless service provider.
`Each adjacent component carrier may have the same band
`width, or different bandwidths. A bandwidth is a selected
`portion of the frequency band. Wireless telephony has tradi
`
`50
`
`45
`
`55
`
`60
`
`65
`
`4
`tionally been conducted within a single frequency band. In
`contiguous carrier aggregation, only one fast Fourier trans
`form (FFT) module and/or one radio frontend may be used.
`The contiguous component carriers can have similar propa
`gation characteristics which can utilize similar reports and/or
`processing modules.
`FIGS. 2B-2C illustrates an example of carrier aggregation
`of non-continuous component carriers. The non-continuous
`component carriers may be separated along the frequency
`range. Each component carrier may even be located in differ
`ent frequency bands. Non-contiguous carrier aggregation can
`provide aggregation of a fragmented spectrum. Intra-band (or
`single-band) non-contiguous carrier aggregation provides
`non-contiguous carrier aggregation within a same frequency
`band (e.g., band A), as illustrated in FIG. 2B. Inter-band (or
`multi-band) non-contiguous carrier aggregation provides
`non-contiguous carrier aggregation within different fre
`quency bands (e.g., bands A, B, or C), as illustrated in FIG.
`2C. The ability to use component carriers in different fre
`quency bands can enable more efficient use of available band
`width and increases the aggregated data throughput.
`Network symmetric (or asymmetric) carrier aggregation
`can be defined by a number of downlink (DL) and uplink
`(UL) component carriers offered by a network in a sector. UE
`symmetric (or asymmetric) carrier aggregation can be
`defined by a number of downlink (DL) and uplink (UL)
`component carriers configured for a UE. The number of DL
`CCs may be at least the number of ULCCs. A system infor
`mation block type 2 (SIB2) can provide specific linking
`between the DL and the UL by means of signaling EUTRA
`Absolute Radio Frequency Channel Number (EARFCN) for
`the UL which is associated with a corresponding DL. FIG.3A
`illustrates a block diagram of a symmetric-asymmetric carrier
`aggregation configuration, where the carrier aggregation is
`symmetric between the DL and UL for the network and
`asymmetric between the DL and UL for the UE. FIG. 3B
`illustrates a block diagram of an asymmetric-symmetric car
`rier aggregation configuration, where the carrier aggregation
`is asymmetric between the DL and UL for the network and
`symmetric between the DL and UL for the UE.
`A component carrier can be used to carry channel infor
`mation via a radio frame structure transmitted on the physical
`(PHY) layer in a uplink transmission between a node (e.g.,
`eNodeB) and the wireless device (e.g., UE) using a generic
`long term evolution (LTE) frame structure, as illustrated in
`FIG. 4. While an LTE frame structure is illustrated, a frame
`structure for an IEEE 802.16 standard (WiMax), an IEEE
`802.11 standard (WiFi), or another type of communication
`standard using SC-FDMA or OFDMA may also be used.
`FIG. 4 illustrates an uplink radio frame structure. In the
`example, a radio frame 100 of a signal used to transmit control
`information or data can be configured to have a duration, T.
`of 10 milliseconds (ms). Each radio frame can be segmented
`or divided into ten subframes 110i that are each 1 ms long.
`Each subframe can be further subdivided into two slots 120a
`and 120b, each with a duration, T of 0.5 ms. Each slot for
`a component carrier (CC) used by the wireless device and the
`node can include multiple resource blocks (RBs) 130a, 130b,
`130i, 130m, and 130m based on the CC frequency bandwidth.
`Each RB (physical RB or PRB) 130i can include 12-15 kHz
`subcarriers 136 (on the frequency axis) and 6 or 7 SC-FDMA
`symbols 132 (on the time axis) per subcarrier. The RB can use
`seven SC-FDMA symbols if a short or normal cyclic prefix is
`employed. The RB can use six SC-FDMA symbols if an
`extended cyclic prefix is used. The resource block can be
`mapped to 84 resource elements (REs) 140i using short or
`normal cyclic prefixing, or the resource block can be mapped
`
`IPR2019-00128
`Qualcomm 2013, p. 16
`
`

`

`US 9,161,254 B2
`
`10
`
`15
`
`30
`
`35
`
`5
`to 72 REs (not shown) using extended cyclic prefixing. The
`RE can be a unit of one SC-FDMA symbol 142 by one
`subcarrier (i.e., 15 kHz) 146. Each RE can transmit two bits
`150a and 150b of information in the case of quadrature phase
`shift keying (QPSK) modulation. Other types of modulation
`may be used, such as 16 quadrature amplitude modulation
`(QAM) or 64 QAM to transmit a greater number of bits in
`each RE, or bi-phase shift keying (BPSK) modulation to
`transmit a lesser number of bits (a single bit) in each RE. The
`RB can be configured for an uplink transmission from the
`wireless device to the node.
`Reference signals (RS) can be transmitted by SC-FDMA
`symbols via resource elements in the resource blocks. Refer
`ence signals (or pilot signals or tones) can be a known signal
`used for various reasons, such as to synchronize timing, esti
`mate a channel, and/or noise in the channel. Reference signals
`can be received and transmitted by wireless devices and
`nodes. Different types of reference signals (RS) can be used in
`a RB. For example, in LTE systems, uplink reference signal
`types can include a Sounding reference signal (SRS) and a
`UE-specific reference signal (UE-specific RS or UE-RS) or a
`demodulation reference signal (DM-RS). In LTE systems,
`downlink reference signal types can include channel state
`information reference signals (CSI-RS) which can be mea
`25
`sured by a wireless device to provide CSI reports on a chan
`nel.
`An uplink signal or channel can include data on a Physical
`Uplink Shared CHannel (PUSCH) or control information on
`a Physical Uplink Control CHannel (PUCCH). In LTE, the
`uplink physical channel (PUCCH) carrying uplink control
`information (UCI) can include channel state information
`(CSI) reports, Hybrid Automatic Retransmission request
`(HARQ) ACKnowledgment/Negative ACKnowledgment
`(ACK/NACK) and uplink scheduling requests (SR).
`The wireless device can provide aperiodic CSI reporting
`using the PUSCH or periodic CSI reporting using PUCCH.
`The PUCCH can support multiple formats (i.e., PUCCH for
`mat) with various modulation and coding schemes (MCS), as
`shown for LTE in Table 1. For example, PUCCH format3 can
`be used to convey multi-bit HARQ-ACK, which can be used
`for a UE Supporting carrier aggregation in Time Division
`Duplex (TDD).
`
`40
`
`TABLE 1.
`
`PUCCH
`format
`
`Modulation
`Scheme
`
`Number of bits per
`Subframe, Mi
`
`1
`1a.
`1b
`2
`2a
`2b
`3
`
`NA
`BPSK
`QPSK
`QPSK
`QPSK+ BPSK
`QPSK + QPSK
`QPSK
`
`NA
`1
`2
`2O
`21
`22
`48
`
`In another example, PUCCH format 2 can use frequency
`hopping, as illustrated in FIG. 5. Frequency hopping can be a
`method of transmitting radio signals by rapidly Switching a
`carrier among many frequency channels using a pseudoran
`dom sequence or specified sequence known to both a trans
`mitter (e.g., UE in an uplink) and a receiver (e.g., eNB in the
`uplink). Frequency hopping can enable the UE to exploit the
`frequency diversity of a wideband channel used in LTE in an
`uplink while keeping a contiguous allocation (in the time
`domain).
`The PUCCH can include various channel state information
`(CSI) reports. The CSI components in the CSI reports can
`
`45
`
`50
`
`55
`
`60
`
`65
`
`6
`include a channel quality indicator (COI), a precoding matrix
`indicator (PMI), a precoding type indicator (PTI), and/or rank
`indication (RI) reporting type. The CQI can be signaled by a
`UE to the eNodeB to indicate a suitable data rate, such as a
`modulation and coding scheme (MCS) value, for downlink
`transmissions, which can be based on a measurement of the
`received downlink signal to interference plus noise ratio
`(SINR) and knowledge of the UEs receiver characteristics.
`The PMI can be a signal fed back by the UE to support
`multiple-input multiple-output (MIMO) operation. The PMI
`can correspond to an index of the precoder (within a code
`book shared by the UE and eNodeB), which can maximize an
`aggregate number of data bits which can be received across all
`downlink spatial transmission layers. PTI can be used to
`distinguish slow from fast fading environments. The RI can
`be signaled to the eNodeB by UEs configured for PDSCH
`transmission modes 3 (e.g., open-loop spatial multiplexing)
`and 4 (e.g., closed-loop spatial multiplexing). RI can corre
`spond to a number of useful transmission layers for spatial
`multiplexing (based on the UE's estimate of the downlink
`channel), enabling the eNodeB to adapt the PDSCH trans
`missions accordingly.
`The granularity of a COI report can be divided into three
`levels: wideband, UE selected subband, and higher layer con
`figured subband. The wideband CQI report can provide one
`CQI value for an entire downlink system bandwidth. The UE
`selected subband CQI report can divide the system bandwidth
`into multiple subbands, where the UE can select a set of
`preferred subbands (the best M subbands), then report one
`CQI value for the wideband and one differential CQI value for
`the set (assuming transmission only over the selected M Sub
`bands). The higher layer configured subband CQI report can
`provide a highest granularity. In the higher layer configured
`subband CQI report, the wireless device can divide the entire
`system bandwidth into multiple subbands, then reports one
`wideband CQI value and multiple differential CQI values,
`Such as one for each Subband.
`The UCI carried by the PUCCH can use different PUCCH
`reporting types (or CQI/PMI and RI reporting types) to
`specify which CSI reports are being transmitted. For
`example, PUCCH reporting Type 1 can support CQI feedback
`for UE selected sub-bands; Type 1a can support subband CQI
`and second PMI feedback; Type 2, Type 2b, and Type 2c can
`support wideband CQI and PMI feedback; Type 2a can sup
`port wideband PMI feedback; Type 3 can supports RI feed
`back; Type 4 can Supports wideband COI: Type 5 can Support
`RI and wideband PMI feedback; and Type 6 can support RI
`and PTI feedback.
`Different CSI components can be included based on the
`PUCCH reporting type. For example, RI can be included in
`PUCCH reporting types 3, 5, or 6. Wideband PTI can be
`included in PUCCH reporting type 6. Wideband PMI can be
`included in PUCCH reporting types 2a or 5. Wideband CQI
`can be included in PUCCH reporting types 2, 2b, 2c, or 4.
`Subband CQI can be included in PUCCH reporting types 1 or
`1a.
`The CQI/PMI and RI (PUCCH) reporting types with dis
`tinct periods and offsets can be supported for the PUCCHCSI
`reporting modes illustrated by the table in FIG. 5. FIG. 5
`illustrates an example for LTE of the PUCCH reporting type
`and payload size per PUCCH reporting mode and mode state.
`The CSI information reported can vary based on the down
`link transmission scenarios used. The various scenarios for
`the downlink can be reflected in different transmission modes
`(TMs). For example, in LTE, TM1 can use a single transmit
`antenna; TM2 can use transmit diversity; TM3 can use open
`loop spatial multiplexing with cyclic delay diversity (CDD);
`
`IPR2019-00128
`Qualcomm 2013, p. 17
`
`

`

`US 9,161,254 B2
`
`7
`TM4 can use closed loop spatial multiplexing; TM5 can use
`multi-user MIMO (MU-MIMO); TM 6 can use closed loop
`spatial multiplexing using a single transmission layer, TM 7
`can use beam forming with UE-specific RS: TM 8 can use
`single or dual-layer beam forming with UE-specific RS; and
`TM 9 can use a multilayer transmission to Support closed
`loop single user MIMO (SU-MIMO) or carrier aggregation.
`In an example, TM 10 can be used for coordinated multipoint
`(CoMP) signaling, such as joint processing (JP), dynamic
`point selection (DPS), and/or coordinated scheduling/coordi
`nated beam forming (CS/CB).
`Each transmission mode can use different PUCCH CSI
`reporting modes, where each PUCCH CSI reporting mode
`can represent different CQI and PMI feedback types, as
`shown for LTE in Table 2.
`
`10
`
`15
`
`8
`can drop the CSI reports with PUCCH reporting types 1, 1a,
`first, then drop the CSI reports with PUCCH reporting types
`2, 2b, 2c, and 4, second, then drop any CSI reports with
`PUCCH reporting types 3, 5, 6, and 2a above the number of
`CSI report(s) to be transmitted. In an example, a CSI report
`can be generated for each component carrier (CC). Each CC
`can be represented by a serving cell index (i.e., ServCellIn
`dex). Among CSI reports having reporting types with a same
`priority (e.g., PUCCH reporting types 3, 5, 6, and 2a), a
`priority of a cell can decrease as the corresponding serving
`cell index (i.e., ServCellIndex) increases (i.e., the lower cell
`index has higher priority).
`In another example