1111111111111111 IIIIII IIIII 1111111111 11111 1111111111 11111 1111111111 111111111111111 11111111
`US 20200280409Al
`
`c19) United States
`c12) Patent Application Publication
`GRANT et al.
`
`c10) Pub. No.: US 2020/0280409 Al
`Sep. 3, 2020
`(43) Pub. Date:
`
`(54) UNIFIED UL AND DL BEAM INDICATION
`
`Related U.S. Application Data
`
`(71) Applicant: Telefonaktiebolaget LM Ericsson
`(publ ), Stockholm (SE)
`
`(72)
`
`Inventors: Stephen GRANT, Pleasanton, CA
`(US); Sebastian FAXER, Jarfiilla (SE);
`Mattias FRENNE, Uppsala (SE);
`Andreas NILSSON, Giiteborg (SE);
`Ravikiran NORY, San Jose, CA (US);
`Niklas WERNERSSON, Kungsangen
`(SE)
`(73) Assignee: Telefonaktiebolaget LM Ericsson
`(publ), Stockholm (SE)
`
`(21) Appl. No.:
`
`16/646,052
`
`(22) PCT Filed:
`
`Sep. 10, 2018
`
`(86) PCT No.:
`
`PCT /IB2018/056888
`
`§ 371 (c)(l),
`(2) Date:
`
`Mar. 10, 2020
`
`(60) Provisional application No. 62/556,940, filed on Sep.
`11, 2017.
`
`Publication Classification
`
`(51)
`
`Int. Cl.
`H04L 5100
`H04W72/04
`(52) U.S. Cl.
`CPC ......... H04L 510048 (2013.01); H04W 721042
`(2013.01); H04L 510044 (2013.01)
`
`(2006.01)
`(2006.01)
`
`(57)
`
`ABSTRACT
`
`A user equipment (UE) the UE being configured to receive
`a message comprising configuration information, CI, indi(cid:173)
`cating that a reference signal, RS, is quasi-co-located, QCL,
`with a transmission; and adjust a spatial Tx configuration for
`the transmission based on an RS associated with the
`received CI.
`
`110b VVireless Device
`
`D
`D
`
`110c \tVlreless Device
`
`110 \J\/ire!ess Device
`
`<o/f __ ,
`
`160b NE~twork Nod!:~
`
`t... _
`
`106 Network
`
`170 \/\fireless Signal
`
`160 Network Node
`
`/ / ' '
`,,
`114 lnteftace
`- ~ ]r-J~a~}J 112 Radio Front End Circuitry
`1
`I-------, -------, I
`!__ 118 Filter(S) ='-!__ 116 Amplifier(S) I~
`I
`
`137 Power
`Circuitry
`
`: 1;-2 ~J~i~;;v;:;] : -;~i~;i~;, 7
`_______ I ~-_::r~i~--I
`I -1:i°4 Ba;;;nd "j
`I I
`~ _ ~r.:'..'i:'._Y __ I
`120ciic°uWfJing
`II
`--------r--------'11
`.L-------.i.
`11
`,----'---1 ,----'---1 11
`I I 132 User lnte,rf,m• I
`II
`~ 130 De•vice
`-,....1 Readable Medium
`I
`Equipment
`II
`-------' ---..:1....---' .,IJ
`- _____________ ::-f-: - -- - -
`-
`I
`I
`:
`134 Auxiliary Equipment
`-------~--------1
`-..I
`I
`136 Power Source
`I ______________ I
`
`-~
`
`187 Power
`Circuitry
`
`I
`I
`-o
`I
`fo,.
`I Antenna(s) - - - - - - - ,
`
`I 192 Radio Front End I I
`I
`I I
`C.rcu1try
`I I
`I I
`198 Filter(s)
`I =======1 I
`1 I 196 ,\mpiifier(s)
`I I
`1-'-::...-=--=--=--=--=--=- J
`
`19/4 Portis){
`Tem,nal(s
`
`I
`I
`
`190
`lnte,tace
`
`r - - - - - - - - - - - - - - ,
`I
`172 RF Tranceiver Ctrcuitry
`I
`L _____________ _ 1
`, -174 Ba;t;;;nd I
`11
`~ _ ~r~i~ __ I
`170cfic~~f~lng
`11
`' - - - - - - - - - - - - - - - - ' I I
`11
`, - - - - - - - - - - - - - - , 11
`->I
`I
`II
`180 Device Readable Medium
`L - - - - - - - __ ----~)I
`_______ ::r;-: ______ I
`- ~
`184 Auxiliary E.quipm,mt
`I
`I
`_______________ I
`I
`
`-------~~-------
`-------.. -------
`
`1
`I
`
`186 Power Source
`
`I
`I
`
`Ex.1007
`APPLE INC. / Page 1 of 37
`
`

`

`> ....
`
`1,0
`0
`.i;...
`0
`QO
`N
`
`N
`0
`N
`rJJ
`c
`
`0 --- 0
`
`....
`0 ....
`....
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`N
`
`--------.-------
`I
`I
`I
`1
`-------~--------
`---------------I
`I
`_______ y-;-------I
`L ______________ I)
`
`:
`
`1.84 Auxiliary Equipment
`
`-~
`
`I
`,
`
`-
`
`180 Device Readable Medium
`r------_'t.._ ----
`
`-)lo!
`
`186 Power Source
`
`FIG. 1
`
`I
`I
`
`136 Power Source
`
`I
`-~
`
`I
`I
`
`134 Auxiliary Equipment
`
`-------~--------1
`I
`I
`-~
`-_____________ :-!:"-:::--------
`I
`_______ I _ --_i_---1 J
`-1 Readable rv1edium
`,.J
`I I 132 User intE,rfau, I
`,----'---1 ,... __ ::,y ___ ,
`
`Equipment
`
`I
`
`130 Device
`
`.1.-------
`
`Circuitry
`137 Power
`
`~ _ _::'.r:'.:i~ __ I
`1-174 ri,;;t;n; 1
`L -------------_I
`I
`I
`r--------------,
`
`170 Processing
`
`Circuitry
`
`172 RF Tranceiver Circuitry
`
`Circuitry
`187 Power
`
`120 Processing
`
`Circuitry
`
`,__ ______ I
`I
`I
`I
`126 Application I
`i-------
`
`Circuitry
`Processing
`
`~ _ _::'.r:'.:i~ __ I
`1-1:i"4 ri,;;;;;n; 1
`~ _ _::r~i~ __ I
`I 122 RF TranceivE,r I
`,-------1
`
`0
`N
`0
`N
`~
`
`~
`
`'?
`('D
`rJJ
`
`Interface
`
`190
`
`Terminal(s) _ I
`I
`194 Port(s)/
`
`.... --=--=--=--=--=--=-J
`I I 196 Arnpiifier(s)
`I
`I ::: = = = = ==I I
`I I
`I I
`I __ Circuitry __ I I
`1-192 Radio Front End I I
`
`I
`
`._
`
`198 Filter(s)
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`I Antenna(s)
`I
`I
`I
`
`162
`
`L._.a.
`,...,
`
`106 Network
`
`---------
`1._ ______ I ._ ______ ~
`I I -118 Filt;(S) -, I 116 Amplifier(S) I I
`-------1
`I
`----------------1
`
`Antenna(s) I 112 Radio Front End Circuitry
`
`L-----
`
`114 Interface
`
`Lr .... 111
`
`/',
`
`160 Network Node
`
`170 Wireless Signal
`
`110 Wireless Device
`
`□ 110c Wireless Device
`
`□ 110b Wireless Device
`
`Ex.1007
`APPLE INC. / Page 2 of 37
`
`

`

`> ....
`
`1,0
`0
`.i;...
`0
`QO
`N
`
`N
`0
`N
`rJJ
`c
`
`0 --- 0
`
`....
`0 ....
`N
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`N
`
`0
`N
`0
`N
`~
`
`~
`
`'?
`('D
`rJJ
`
`>
`
`~ .....
`
`(')
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`FIG. 2
`
`235 Receiver
`
`233 Transmitter
`
`227 Data
`
`225 Appiication Programs
`
`223 Operating System
`
`221 Storage Medium
`
`219 ROM
`
`217 RAM
`
`231 Communication Subsystem
`
`215 Memory
`
`202Bos
`
`Power Source
`
`213
`
`Interface
`Connection
`Network
`
`211
`
`RF Interface
`
`209
`
`Interface
`
`lnputiOutput
`
`205
`
`Processor
`
`201
`
`~
`
`~
`
`<
`
`200
`
`Ex.1007
`APPLE INC. / Page 3 of 37
`
`

`

`> ....
`
`N
`0
`N
`rJJ
`c
`
`0 --- 0
`
`1,0
`0
`.i;...
`0
`QO
`N
`
`~
`
`('D
`('D
`
`....
`0 ....
`.....
`rJJ =(cid:173)
`
`N
`
`0
`N
`0
`N
`~
`
`~
`
`'?
`('D
`rJJ
`
`~ .....
`
`(')
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`L_l·====~~== ~I◄---~ ~~I~
`
`1380 Physical I\JI
`
`370 NIC
`
`395
`
`[ 390-1 Memory
`
`Control System
`
`3230
`
`►:
`
`FIG. 3
`
`395 Instr.
`
`395 Instr.
`
`390-·2 Non transitory storage
`
`390-2 r\lon transitory storage
`
`Transmitter
`
`3220
`
`...
`
`,J
`
`360 Processing circuitry
`
`350 Processing circuitry
`
`Receiver
`
`3210
`
`Radio Un!t
`
`3200
`
`,---------------1---------------, -
`I Antenna(sl
`1
`
`3225
`
`'
`
`✓-,-
`/''
`
`/
`
`~;:1.,00-
`
`'
`
`/'
`
`/
`
`350 Virtualization Layer
`
`350 V!rtualization Layer
`
`340VM
`
`340VM
`
`340VM
`
`340VM
`
`virtual node or server/ instance
`Appiication / virtual appliance/
`
`320
`
`App
`320
`
`App
`320
`
`Application
`
`320
`
`_ _J Antenna(s)
`
`3225
`
`:
`
`330 HW
`~-----------~ ✓-, ~
`
`! 380 Physical NI
`
`370 NIC
`
`395
`
`390-1 Memory
`
`330 HW
`
`orchestration
`
`and
`
`Management
`
`3100
`
`Ex.1007
`APPLE INC. / Page 4 of 37
`
`

`

`Patent Application Publication
`
`Sep. 3, 2020 Sheet 4 of 12
`
`US 2020/0280409 Al
`
`/ - ...... -
`-(
`
`'(
`
`420
`
`/
`/ (
`•
`·'
`•
`•
`\(
`•
`•
`•
`\
`,_ ..... / -
`•
`•
`
`"\
`
`,,,,' ...... -
`
`/
`
`...... _
`"
`
`I
`~
`I
`
`/
`I
`
`0
`
`422
`
`421
`
`4 5 0~ -
`
`•
`•
`•
`•
`
`412a
`
`FIG. 4
`
`Ex.1007
`APPLE INC. / Page 5 of 37
`
`

`

`> ....
`
`1,0
`0
`.i;...
`0
`QO
`N
`
`N
`0
`N
`rJJ
`c
`
`0 --- 0
`
`FIG. 5
`
`-4-5s0......_
`
`•
`
`••••••
`
`....
`0 ....
`Ul
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`N
`
`',:Q ~o-
`
`~
`
`\..
`
`0
`N
`0
`N
`~
`
`~
`
`'?
`('D
`rJJ
`
`Processing circuitry
`
`528
`
`Radio interface
`
`527
`
`•
`•
`•
`
`• • • •
`·-----~.
`•
`•
`• -
`.! .. ----)
`
`. .
`I• ,. ,. ,. ,. _,.
`r
`1"!
`
`~--
`
`I •
`
`I
`
`I
`I
`r
`
`-5"}'.-,
`
`I,
`
`Processing circuitry
`
`518
`
`Processing circuitry
`
`538
`
`• • .
`•
`537•
`•
`!. •
`•
`
`Radio int~face
`
`Client application
`
`532
`
`HW
`535
`
`I
`~~
`
`530 UE
`
`HW
`515
`
`SW
`511
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`]
`
`•• Communication interface
`HW
`525
`
`526
`
`_._j_
`
`520 Base station
`
`[~
`
`• -----.-•••• 1· ••
`
`~
`
`Communication interface
`
`516
`
`Host application
`
`512
`
`• I ., ,.
`... l'
`✓ ,:?
`
`510 Host computer
`
`Ex.1007
`APPLE INC. / Page 6 of 37
`
`

`

`Patent Application Publication
`
`Sep. 3, 2020 Sheet 6 of 12
`
`US 2020/0280409 Al
`
`SEGiN
`
`610
`Host computer
`provides user
`data
`
`611
`Host computer
`executes host
`application
`
`620
`Host computer
`initiates
`transmission
`carrying the
`user data to thE?
`UE
`
`i
`
`I
`,
`
`630
`Base station
`transmits the
`user data
`
`~~~~~~~~~~J ----------
`
`640
`UE executes
`client
`
`,
`
`i
`
`~~-~
`
`FIG. 6
`
`Ex.1007
`APPLE INC. / Page 7 of 37
`
`

`

`Patent Application Publication
`
`Sep. 3, 2020 Sheet 7 of 12
`
`US 2020/0280409 Al
`
`BEGIN
`
`710
`Host computer
`provides user
`data
`
`720
`Host computer
`initiates
`transmission
`ca rryl ng the
`user data to the
`UE
`
`:--
`
`------1
`
`730
`i
`i
`i U E receives the i
`'
`'
`user data
`
`FIG. 7
`
`Ex.1007
`APPLE INC. / Page 8 of 37
`
`

`

`Patent Application Publication
`
`Sep. 3, 2020 Sheet 8 of 12
`
`US 2020/0280409 Al
`
`8.30
`UE initiates
`transmission of
`the user data to
`
`840
`Host computer
`receives user
`data
`transmitted
`from the UE
`
`END
`
`FIG. 8
`
`Ex.1007
`APPLE INC. / Page 9 of 37
`
`

`

`Patent Application Publication
`
`Sep. 3, 2020 Sheet 9 of 12
`
`US 2020/0280409 Al
`
`(~)
`
`- - - - - - - - - - - - - - - - - - - - - - - ,
`
`910
`Base station
`receives user
`: data frorn UE
`
`. I~~~~
`
`'
`!
`:
`
`I
`
`920
`Base ~tation
`1n1t1ates
`transmission of :
`user data to the !
`host computer i
`
`930
`Host computer
`receives the
`user data
`
`END
`
`FIG. 9
`
`Ex.1007
`APPLE INC. / Page 10 of 37
`
`

`

`Patent Application Publication
`
`Sep. 3, 2020 Sheet 10 of 12 US 2020/0280409 Al
`
`1000
`
`~
`
`s1002
`~
`receive configuration information (Cl) indicating that an RS is quasi-co(cid:173)
`located (QCL) with a transmission (e.g., the Cl comprises or is a
`Transmission Configuration Indicator (TCI))
`
`s1004
`~
`adjust a spatial configuration based on an RS associated with the Cl
`
`1 7
`
`s1004a
`s1004b
`- ✓ - - - - - - - 1 I-(""' - - - - - - - - - - - - - - 1
`-
`-
`-
`-
`-
`-
`I -
`1 adjusting the spatial configuration
`1 1 adjusting the spatial configuration
`1
`1 based on the RS associated with the I I based on the RS associated with the I
`I Cl comprises adjusting a spatial Tx
`I I Cl comprises adjusting a spatial Rx
`I
`I
`configuration based on the RS
`: I
`configuration based on The RS
`:
`: ___ associated with the Cl _ _ _ 1 : ___ associated with the Cl _ _ _ 1
`
`FIG. 10
`
`Ex.1007
`APPLE INC. / Page 11 of 37
`
`

`

`Patent Application Publication
`
`Sep. 3, 2020 Sheet 11 of 12
`
`US 2020/0280409 Al
`
`1100
`~
`
`1106
`~
`adjusting
`unit
`
`1104
`~
`First
`receiver
`unit
`
`FIG. 11
`
`Ex.1007
`APPLE INC. / Page 12 of 37
`
`

`

`> ....
`
`N
`0
`N
`rJJ
`c
`
`0 --- 0
`
`1,0
`0
`.i;...
`0
`QO
`N
`
`....
`0 ....
`N
`....
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`N
`
`0
`N
`0
`N
`~
`
`~
`
`'?
`('D
`rJJ
`
`.... 0 =
`""O = O" -....
`.... 0 =
`t "e -....
`
`~ .....
`
`(')
`
`('D = .....
`~ .....
`""O
`
`~ .....
`
`(')
`
`et 2 for P3: 4 resources {repetition=on\
`.
`s
`Set 1 for P2: 5 resources (repetition=off)
`
`I
`
`'
`
`t 2 CSI-RS Resource Sets
`
`....
`
`,
`
`,
`
`e.g., Set 1 in Resource Setting 1
`
`Selection of one of two resource sets
`
`...._ ______ ____J
`
`Resource Setting 1
`\
`\
`\
`I
`I
`I
`I
`
`Aperiodic
`
`.,,,,...,,.,,,,...,,,,..
`
`DCI
`
`.,,,....,,,,.--
`
`.,,.,,,,...,,,,..
`
`,, ,,
`
`,,,,
`
`,,,,
`
`,,,,""
`
`/
`
`,e~
`
`e~·'
`
`~o<:--0
`
`-o~0
`
`,ee,><s.
`
`se'
`
`Resource Setting 1 F✓--
`
`RSRP + CRI,
`/
`/ I
`
`Aperiodic
`
`P2 I
`
`,,,,""
`
`'\
`~,c."e<.;f
`
`-oJ-
`
`e"--..:
`
`tt,.~('.~
`
`o\ '-"' o,;;,. C:Je
`
`~..iO 0-Q
`
`o~s
`
`e\~('.Q,C-'
`
`FIG. 12
`
`Short ID configuration
`
`8 SSB resources
`SSB Resource Set
`
`-
`-
`
`Periodic
`
`Resource Setting 2
`
`(Links) _j
`. I
`1--
`
`, Measurement Sett1nq
`I
`
`shmt IDs
`
`Top 2 RSRPs +
`
`Resource Setting 3 I
`I
`f
`I
`Resource Setting 2
`.1 _ I
`I
`I
`
`(No CRI)
`CQ!/PMI/RI
`Aperiodic
`
`Periodic
`
`P3
`
`I
`
`----.
`
`-
`
`-
`
`Ex.1007
`APPLE INC. / Page 13 of 37
`
`

`

`US 2020/0280409 Al
`
`Sep.3,2020
`
`1
`
`UNIFIED UL AND DL BEAM INDICATION
`
`TECHNICAL FIELD
`
`[0001] Disclosed are embodiments for beam indication.
`
`BACKGROUND
`
`[0002] Generally, all terms used herein are to be inter(cid:173)
`preted according to their ordinary meaning in the relevant
`technical field, unless a different meaning is clearly given
`and/or is implied from the context in which it is used. All
`references
`to a/an/the element, apparatus, component,
`means, step, etc. are to be interpreted openly as referring to
`at least one instance of the element, apparatus, component,
`means, step, etc., unless explicitly stated otherwise. The
`steps of any methods disclosed herein do not have to be
`performed in the exact order disclosed, unless a step is
`explicitly described as following or preceding another step
`and/or where it is implicit that a step must follow or precede
`another step. Any feature of any of the embodiments dis(cid:173)
`closed herein may be applied to any other embodiment,
`wherever appropriate. Likewise, any advantage of any of the
`embodiments may apply to any other embodiments, and vice
`versa. Other objectives, features and advantages of the
`enclosed embodiments will be apparent from the following
`description.
`[0003]
`In the 3GPP TSG RAN WGl #90 Meeting (21-25
`Aug. 2017) the following agreement #1 was made related to
`beam indication for the downlink (DL) data channel
`PDSCH:
`
`TABLE 1
`
`Agreement #1
`
`For the purposes of beam indication for at least NR unicast
`PDSCH, support an N-bit indicator field in DCI which provides
`a reference to a DL RS which is spatially QCL'd with at
`least one PDSCH DMRS port group
`An indicator state is associated with at least one index of a
`DL RS (e.g., CRT, SSB Index) where each index of downlink RS
`can be associated with a given DL RS type, e.g., aperiodic
`CSI-RS, periodic CSI-RS, semi-persistent CSI-RS, or SSB,
`Note: Ll-RSRP reporting on SSB is not yet agreed
`Note: One possibility to determine DL CSI-RS type is through
`the resource setting ID, other options are not precluded
`The value of N is FFS, but is at most [3] bits
`FFS: The case of more than one DMRS port group
`FFS: Whether or not to indicate more than one beam indicator,
`NR strive to minimize the indicator overhead
`FFS: Signalling mechanism for the association of a DL RS index
`(e.g., CR!, SSB index) to an indicator state, e.g.,
`The association is explicitly signaled to the UE
`The association is implicitly determined by the UE
`Combination of the above is not precluded
`FFS: An indicator state may or may not also include other
`parameter(s), e.g., for PDSCH to RE mapping purposes analogous
`to PQI in LTE, other QCL parameters
`FFS: Whether or not an indicator state may be associated
`with more than one DL RS index
`FFS: PDCCH beam indication may or may not be based on the
`beam indication states for PDSCH
`
`[0004] This agreement establishes that an N-bit indicator
`field in DCI provides at least a spatial QCL reference to a
`downlink reference signal (DL RS) (either CSI-RS or SSB)
`to aid in the demodulation of PDSCH. A given value of the
`indicator is referred to as an indicator state, and it is
`associated with an index of the DL RS (CRI or SSB Index).
`In this case of CSI-RS, the resource can be periodic,
`
`semi-persistent, or aperiodic. In this agreement, it is for
`further study (FFS) how the DL RS index is associated with
`the indicator state, either through explicit signalling from the
`gNB to UE or implicitly determined by the UE during
`measurement.
`[0005]
`In the same 3GPP meeting, the agreed N-bit indi(cid:173)
`cator field was extended for further supporting downlink
`scheduling operation as follows:
`
`TABLE 2
`
`Agreement #2
`
`Support the QCL indication of DM-RS for PDSCH via DCI signaling:
`The N-bit indicator field in the agreed WF Rl-1714885 is extended to
`support:
`Each state refers to one or two RS sets, which indicates a QCL
`relationship for one or two DMRS port group (s), respectively
`Each RS set refers to one or more RS(s) which are
`QCLed with DM-RS ports within corresponding DM-
`RS group
`Note: The RSs within a RS set may be of different types
`If there are more than one RS per RS set, each of them
`may be associated with different QCL parameters, e.g.
`one RS may be associated with spatial QCL while
`another RS may be associated with other QCL
`parameters, etc
`Configuration of RS set for each state can be done via
`higher layer signaling
`E.g., RRC/RRC + MAC CE
`FFS the timing when the QCL is applied relative to the time of the
`QCL indication
`
`[0006] With this extension, each indicator state is associ(cid:173)
`ated with one or two RS sets, where each RS set refers to one
`or two downlink DMRS port groups, respectively. This
`facilitates QCL indication in the case of that multi-TRP
`operation (DL CoMP) is configured. Different states may
`correspond to different TRP pairs supporting, e.g., non(cid:173)
`coherent joint transmission (NC-JT) from a pair of TRPs to
`the UE. Indicator states configured with only a single RS set
`may be used to support QCL indication either in the case of
`basic single-TRP operation or in the case of multi-TRP
`operation with, e.g., dynamic point selection (DPS).
`[0007]
`In any case, an RS set contains one or more DL
`RSs. In the case of a single DL RS, a set contains an index
`to either a CSI-RS or SSB. In the case of more than one DL
`RS, a set could contain, for example, an index to either
`CSI-RS or SSB and a configured TRS. In this case, the
`PDSCH DMRS could be configured to be QCL with CSI(cid:173)
`RS/SSB with respect to spatial parameters, but QCL with
`TRS with respect to non-spatial (time/frequency) param(cid:173)
`eters.
`
`SUMMARY
`
`[0008] Throughout this disclosure the following generic
`name for the N-bit indicator is used: Transmission Configu(cid:173)
`ration Indicator (TCI). According to some embodiments, this
`N-bit indicator may be functionally identical to the QCL
`Reference Indicator (QRI) disclosed in U.S. provisional
`patent application No. 62/544,534, filed on Aug. 11, 2017.
`[0009] TABLE 3 (below) shows an exemplary set of TCI
`states that may be RRC configured to a UE. With N-bits, up
`to 2N TCI states may be defined, since only one set can be
`selected at a time, some containing a single RS set and others
`containing multiple RS sets to support multi-TRP operation.
`In the case of basic single TRP operation, all TCI states
`would contain only a single RS set. A default TCI state is
`
`Ex.1007
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`also shown which may be used, for example, for QCL
`indication referring to the SSB beam index determined by
`the UE during initial access. As agreed previously, different
`TCI states may be used for QCL indication referring to
`different RS types, i.e., SSB, periodic, semi-persistent, or
`aperiodic CSI-RS. It is up to the network implementation to
`configure the states depending on what mix of DL RSs are
`used for beam management.
`
`TABLE 3
`
`TC! states used for QCL indication for PDSCH and PDCCH
`
`TC! State
`
`RS Set(s)
`
`0
`(default
`state)
`1
`2
`3
`
`{Set1 0 }
`
`{Set1 0 }
`{Set1 0 }
`{Setl 3 , Set2 3 )
`
`2N-)
`
`{Setl2 'N-lo Set22 'N_i}
`
`Used for
`PDCCH QCL
`Indication
`
`Used for
`PDSCH QCL
`Indication
`
`y
`
`y
`y
`
`y
`
`y
`y
`y
`
`y
`
`[0010] One of the FFS items in Agreement #1 above is
`regarding whether or not QCL indication for PDCCH may
`be based on the beam indication states for PDSCH. This
`disclosure proposes to unify the QCL indication function(cid:173)
`ality for PDSCH and PDCCH as much as possible.
`[0011] There currently exist certain challenge(s).
`[0012] One problem is that the gNB needs to set its analog
`receive (Rx) beam in advance of receiving UL signals
`(PUSCH, PUCCH, SRS) transmitted from the UE. To keep
`UL beam management under the control of the gNB ( agreed
`in 3GPP), a method is needed to control the direction(s) in
`which the UE transmits UL signals such that the received
`signal(s) at the gNB align with a desired gNB Rx beam
`direction.
`[0013] Another problem is that in some cases a UE may
`not have beam correspondence capability, meaning that is
`not sufficiently well calibrated in order to control its Tx
`beamforming direction for transmitting an UL signal such
`that it aligns with the Rx beamforming direction for receiv(cid:173)
`ing a DL signal. In this case, a method is needed for the gNB
`to effectively control the direction(s) in which the UE
`transmits the PUSCH, PUCCH, and SRS such that the
`received signal(s) at the gNB align with a desired gNB Rx
`beam direction.
`[0014] A further problem is that there is no known way to
`perform DL beam management (selection of DL beams)
`based on UL RS, such as SRS. This could be beneficial in a
`system that is mostly based on channel reciprocity.
`[0015] Certain aspects of the present disclosure and their
`embodiments may provide solutions to these or other chal(cid:173)
`lenges.
`[0016] Some embodiments of this disclosure extend the
`DL beam indication approach in U.S. application No.
`62/544,534 such that UL beam indication may be included
`in the same framework (unified DL and UL beam indication)
`and may further solve one or more problems identified
`above. One step to achieve such objectives is to allow UL
`RS as well as DL RS in a TCI state.
`
`[0017] For example, the gNB signals the UE with a
`particular TCI, which is used at the UE for the purposes of
`setting the UE's beamforming weights (analog or digital) for
`the transmission of UL signals (PUSCH, PUSCH, SRS). The
`benefit of this is that the received signals at the gNB align
`with the desired gNB analog Rx beam directions which
`simplify gNB receiver processing.
`[0018] For the case ofUEs with beam correspondence and
`UL scheduling, the UE makes use of the one or more DL
`RSs (e.g., CSI-RS, SSB) that are associated with the sig(cid:173)
`nalled TCI in order to adjust its Tx beamforming weights for
`transmitting one or more of PUSCH, PUCCH, or SRS.
`Because the UE has performed a measurement on the one or
`more DL RSs at a prior point in time, it is aware of
`appropriate Rx beamforming weights associated with each
`DL RS. The UE then adjusts its Tx beamforming weights
`such that they are reciprocal to the Rx beamforming weights.
`Reciprocal can mean, for example, that the resulting Tx
`beam(s) are aligned with the Rx beam(s) or that reciprocal
`spatial QCL holds between the DL RS received at the UE
`and the transmitted UL RS from the UE.
`[0019] For the case ofUEs without beam correspondence
`and UL scheduling, the UE makes use of one or more UL
`RSs (e.g., SRS) that are associated with the signalled TCI in
`order to adjust its Tx beamforming weights. In one embodi(cid:173)
`ment, the gNB has performed a measurement on a plurality
`of SRS resources at a prior point in time, where each SRS
`resource is associated with a different UE Tx beam. Based
`on these measurements, the gNB indicates to the UE one or
`more preferred SRS resources, e.g., through signalling of
`one or more SRS resource indicators (SRis) that the UE
`should associate with one or more TCI states. Because the
`UE is aware of the Tx beamforming weights for each SRS
`that is already associated with the TCI signalled in the beam
`indication message, the UE then uses the same or similar Tx
`beamforming weights for the transmission of one or more of
`PUSCH, PUCCH, and SRS.
`[0020] For the case ofUEs with beam correspondence and
`DL scheduling, the gNB makes use of one or more UL RSs
`(e.g., SRS) transmitted by the UE that are associated with
`the signalled TCI in order to adjust its gNB Tx beamforming
`weights. In one embodiment, the gNB has performed a
`measurement on a plurality of SRS resources at a prior point
`in time, where each SRS resource is associated with a
`different UE Tx beam. Based on these measurements, the
`gNB indicates to the UE one or more preferred SRS
`resources, e.g., through signalling of one or more SRS
`resource indicators (SRis) that the UE should associate with
`one or more TCI states. Assuming UL/DL correspondence
`exists at the gNB side, the gNB adjusts its Tx beamforming
`weights such that they are reciprocal to the gNB Rx beam(cid:173)
`forming weights used to receive each SRS that is already
`associated with the signalled TCI. Furthermore, because the
`UE is aware of the UE Tx beamforming weights for each
`SRS that is already associated with the TCI signalled in the
`beam indication message, the UE then adjusts its Rx beam(cid:173)
`forming weights such that they are reciprocal to the Tx beam
`forming weights for the reception of one or more of PDSCH,
`PDCCH. SSB, TRS, PTRS or CSI-RS.
`[0021]
`In Summary:
`[0022] The UE adjusts its spatial Tx configuration for
`the transmission of UL signals, e.g., PUSCH, PUCCH,
`SRS, based on RSs that are associated with a TCI that
`is signaled to the UE;
`
`Ex.1007
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`3
`
`[0023] The UE adjusts its spatial Rx configuration for
`the reception of DL signals, e.g., PDSCH, PDCCH,
`SSB or CSI-RS, based on previous transmission of UL
`RSs (e.g. SRS) that are associated with a TCI that is
`signaled to the UE;
`[0024] TCI can be signaled in DCI containing an UL
`grant scheduling a PUSCH transmission; and
`[0025] The RSs in a RS Set contained in a TCI state
`may contain UL RSs (e.g., SRS) in addition to DL RSs
`(e.g., CSI-RS, SSB).
`[0026] There are, proposed herein, various embodiments
`which address one or more of the issues disclosed herein.
`[0027] For example, in one aspect there is provided a UE
`being configured to receive a message comprising configu(cid:173)
`ration information, CI, indicating that a reference signal, RS,
`is quasi-co-located, QCL, with a transmission, and adjust a
`spatial Tx configuration for the transmission based on an RS
`associated with the received CI.
`[0028]
`In some embodiments, the message is a layer 2
`message, MAC-CE message, RRC message, or DCI mes(cid:173)
`sage.
`[0029]
`In some embodiments, the message is a DCI mes(cid:173)
`sage and the DCI message comprises the CI and one of: an
`UL grant scheduling a PUSCH and a DL grant scheduling a
`PDSCH.
`[0030]
`In some embodiments, the RS associated with the
`received CI is the RS indicated by the received CI.
`[0031]
`In some embodiments, the RS associated with the
`received CI is one of a DL RS and an UL RS.
`[0032]
`In some embodiments, one or more RS sets are
`associated with the CI, and the RS associated with the CI is
`in at least one of the RS sets associated with the CI.
`[0033]
`In some embodiments, the CI comprises a Trans(cid:173)
`mission Configuration Indicator, TCI, and the RS set(s) are
`associated with the TCI.
`[0034]
`In some embodiments, the UE is configured to
`adjust the spatial Tx configuration such that the spatial
`configuration is reciprocal to a spatial configuration associ(cid:173)
`ated with the RS that is associated with the received CI.
`[0035]
`In some embodiments, the RS associated with the
`received CI is a DL RS, and the UE is configured to adjust
`the spatial Tx configuration such that it is reciprocal to a
`spatial Rx configuration associated with the DL RS.
`[0036]
`In some embodiments, the RS associated with the
`received CI is an UL RS included in an RS set associated
`with the CI, and the UE is configured to adjust the spatial Tx
`configuration such that it is reciprocal to a second spatial Tx
`configuration associated with the UL RS.
`[0037]
`In some embodiments, the transmission is a
`PUSCH, PUCCH, or SRS transmission.
`[0038]
`In some embodiments, the received CI is associ(cid:173)
`ated with i) a first RS set containing a first RS and ii) a
`second RS set containing a second RS, the UE adjusts a first
`spatial Tx configuration based on the first RS, the UE adjusts
`a second spatial Tx configuration based on the second RS,
`the UE uses the first spatial Tx configuration for transmis(cid:173)
`sion of PUCCH, and the UE uses the second spatial Tx
`configuration for transmission of PUSCH.
`[0039]
`In another aspect, the UE is operable to receive the
`CI and adjust a spatial receive, Rx, configuration based on
`an RS associated with the received CI, wherein one or more
`RS sets are associated with the CI, and the RS associated
`with the CI is included in at least one of the RS sets
`associated with the CI.
`
`[0040]
`In some embodiments, the message is a DCI mes(cid:173)
`sage and the received DCI further comprises a DL grant
`scheduling a PDSCH.
`[0041]
`In some embodiments, the CI comprises a Trans(cid:173)
`mission Configuration Indicator, TCI, and the RS sets are
`associated with the TCI.
`[0042]
`In some embodiments, the RS associated with the
`CI is an UL RS included in an RS set associated with the CI,
`and the UE is configured to adjust the spatial Rx configu(cid:173)
`ration such that the spatial Rx configuration is reciprocal to
`a spatial Tx configuration associated with the UL RS.
`[0043]
`In some embodiments, the UE is configured to use
`the adjusted spatial Rx configuration to receive one or more
`of: PDCCH, PDSCH, SSB, TRS, PTRS, and CSI-RS.
`[0044]
`In some embodiments,
`the transmission is a
`PDSCH or PDCCH transmission.
`[0045] Certain embodiments may provide one or more of
`the following technical advantage(s). For example, the dis(cid:173)
`closed unified DL and UL beam indication approach may
`offer the following advantages: 1) Highly flexible method
`for the network to dynamically select different beams, either
`from the same or different TRPs, for the transmission of DL
`data and control signals (PDSCH, PDCCH) and reception of
`UL data and control signals (PUSCH, PUCCH); 2)
`Increased system performance and robustness, especially for
`mm-wave operation; 3) Simple and low overhead DL sig(cid:173)
`nalling; and 4) Support of UEs both with and without
`DL/UL beam correspondence.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[0046] The accompanying drawings, which are incorpo(cid:173)
`rated herein and form part of the specification, illustrate
`various embodiments.
`[0047] FIG. 1, which shows a wireless network in accor(cid:173)
`dance with some embodiments.
`[0048] FIG. 2 illustrates one embodiment of a UE in
`accordance with various aspects.
`[0049] FIG. 3 is a schematic block diagram illustrating a
`virtualization environment according to some embodiments.
`[0050] FIG. 4 schematically illustrates a telecommunica(cid:173)
`tion network connected via an intermediate network to a
`host computer.
`[0051] FIG. 5 is a generalized block diagram of a host
`computer communicating via a base station with a user
`equipment over a partially wireless connection.
`[0052] FIG. 6 is a flowchart illustrating a method imple(cid:173)
`mented in a communication system including a host com(cid:173)
`puter, a base station and a user equipment.
`[0053] FIG. 7 is a flowchart illustrating a method imple(cid:173)
`mented in a communication system including a host com(cid:173)
`puter, a base station and a user equipment.
`[0054] FIG. 8 is a flowchart illustrating a method imple(cid:173)
`mented in a communication system including a host com(cid:173)
`puter, a base station and a user equipment.
`[0055] FIG. 9 is a flowchart illustrating a method imple(cid:173)
`mented in a communication system including a host com(cid:173)
`puter, a base station and a user equipment.
`[0056] FIG. 10 is a flowchart illustrating a method imple(cid:173)
`mented in a communication system including a host com(cid:173)
`puter, a base station and a user equipment.
`[0057] FIG. 11 illustrates a schematic block diagram of an
`apparatus 1100 in a wireless network.
`[0058] FIG. 12 illustrates a beam management framework
`according to an embodiments.
`
`Ex.1007
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`Sep.3,2020
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`4
`
`DETAILED DESCRIPTION
`
`[0059] Some of the embodiments contemplated herein
`will now be described more fully with reference to the
`accompanying drawings. Other embodiments, however, are
`contained within the scope of the subject matter disclosed
`herein, the disclosed subject matter should not be construed
`as limited to only the embodiments set forth herein; rather,
`these embodiments are provided by way of example to
`convey the scope of the subject matter to those skilled in the
`art. Additional information may also be found in the docu(cid:173)
`ment(s) provided in the Appendix.
`[0060]
`In all the below embodiments, it is assumed that for
`a particular signalled TCI for beam indication purposes, the
`UE has already made an association between the TCI state
`and one or more DL(UL) RSs (contained in one or more RS
`sets, respectively) on which the UE and/or gNB has made
`prior measurement(s ).
`[0061] Application no. 62544534 discloses two methods
`for making this association, at least for DL RSs: (1) the gNB
`explicitly signals the DL RS index(es) associated with one
`or more TCI states and (2) the UE implicitly determines
`preferred DL RSs to be associat