as) United States
`a2) Patent Application Publication 10) Pub. No.: US 2017/0251460 Al
`(43) Pub. Date: Aug.31, 2017
`
`AGIWALetal.
`
`US 20170251460A1
`
`(54) APPARATUS AND METHOD FOR
`PERFORMING RANDOM ACCESS IN
`BEAM-FORMED SYSTEM
`
`(71) Applicant: Samsung Electronics Co., Ltd.,
`Suwon-si (KR)
`
`(72)
`
`Inventors: Anil AGIWAL, Suwon-si (KR);
`Youngbin CHANG,Anyang-si (KR);
`Nigam ANSHUMAN,Bangalore (IN)
`
`(21)
`
`Appl. No.: 15/443,562
`
`(22)
`
`Filed:
`
`Feb. 27, 2017
`
`Related U.S. Application Data
`
`(60)
`
`Provisional application No. 62/300,333, filed on Feb.
`26, 2016, provisional application No. 62/334,660,
`filed on May 11, 2016.
`
`Publication Classification
`
`(51)
`
`Int. CL
`HO4W 72/04
`HO4W 76/04
`HO4B 7/06
`(52) U.S. Cl
`CPC...... HO4W 72/0406 (2013.01); HO4B 7/0617
`(2013.01); HO4W 76/046 (2013.01)
`
`(2006.01)
`(2006.01)
`(2006.01)
`
`(57)
`
`ABSTRACT
`
`A methodfor performing a random access is provided. The
`methodincludes identifying a first downlink (DL) reception
`(RX) beam based on a measurement on a beam measure-
`ment signal,
`identifying a first uplink (UL) transmission
`(TX) beam correspondingto theidentified first DL RX beam
`and transmitting at least one random access preamble for an
`RX sweeping at a base station, using the identified first UL
`TX beam based ona first power.
`
`
`
`
`
`
`
`Receive RAR transmitted using P TX
`beams by using Q RX beams
`UE capability: Q RX beams
`SeNB capability: PTX beams
`
` SFN of frame in
`
`
`SellB Addition Request
`Alternate 1:
`
`
`(UE-capability: N TX beams, G RX beams)
`
`HF RACH Config may be
`
`
`312/a
`SéNB Addition Reduest Ack
`
`broadcasted by MeNB.
`ARC Connection Reconfiguration
`
`(HF RACH Gonfig,
`
`
`(HF RACH Config,
`Alternate 2: HF RACH Config
`Seli8 capability: PTX beams, MAX beams)|,S°%8
`Capability: P TX beams, M RX. beams)
`is divided in two parts: HF
`
`
`
` ARC Connection Reconfiguration Complete
`RACH Config Common & HF
`
`RACH Config Bedicated. Common
`315
`info is broadcasted by MeNB &
`
`
`
`an
`Dedicated info in dedicated
`Selle Recontig Complete
`signaling from SeNB to UE via MeNB
`
`
`
`
`
`
`
`
`Recelve RACH Preamble transmitted using
`mit RACH Preamble using N TX beams,
`316bJ
`3164|Trans
`repeat each TX beam M times
`NTX beams by using M RX beams
`Sell capability: M RX beams
`SeNB capability: MAX beams
`
`
`
`316
`UE capability: N TX beams
`UE capability: N TX beams
`
`
`a
`Beamformed RACH Preamble
`
`
`Transmit RAR using P TX beams,
`repeat each TX beam Q times
`UE capability: 0 RX beams
`SelB capability: P TX beams
`
`303a)
`
`3173
`
`APPLE 1005
`
`
`
`
`317
`Ay
`Heamformed RAR (TA, SEN info (optionall)
`
`
`
`
`which RAR is transmitted —~
`
`1
`
`APPLE 1005
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 1 of 50
`
`US 2017/0251460 Al
`
`1
`FIG.
`(RELATED ART)
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`<> HFCell
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`HDR Data
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`

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`Patent Application Publication
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`Aug. 31, 2017 Sheet 2 of 50
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`Aug. 31, 2017 Sheet 6 of 50
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`Patent Application Publication
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`Aug. 31, 2017 Sheet 7 of 50
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`US 2017/0251460 Al
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`Patent Application Publication
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`Aug. 31, 2017 Sheet 29 of 50
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`US 2017/0251460 Al
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`Patent Application Publication
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`Aug. 31, 2017 Sheet 30 of 50
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`US 2017/0251460 Al
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`

`Patent Application Publication Aug. 31,2017 Sheet 31 of 50
`
`US 2017/0251460 Al
`
`FIG.21
`
`resultandidentifybestDLRXbeam Z
`
`
`
`
`
`RACHpreambletransmissionusingULTXbeamreciprocaltobestDLAXbeam.TXbeamistransmittedonetimeormultipletimesforRXSweepingatBS.
`
`ReCheckDLMeasurement
`
`RAAttempt2
`
`RAAttempt1
`
`32
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 32 of 50
`
`US 2017/0251460 Al
`
`FIG. 22
`
`AA Attempt Counter = 1
`
`a)
`
`Determine the UL TX beam
`
`
` 2201
`
`2203
`for PRACH transmission
`[
`
`
`Preamble Transmission Counter = 1
`
`
`
`
`Power Ramoing = (Preamble Transmission
`Counter -1} PowerRampingStepiDelta}
`
`2207
`
`1. P is initial Power
`2, MAX TX Counter and MAX
`Attempt Counter configured by HW
`
`
`
`
`
`|
`
`|
`
`
`
`
`
`Transmit PRACH preamble one or muttiple times
`(for RX sweeping at BS) using determined
`UL TX beam and 1X power
`
`2209
`
`2213
`
`
`
`
`
`RA Attempt Counter equals
`MAX Attempt COUNTER?
`
`
`Preamble Transmission Counter
`
`equals MAX TX COUNTER?
`——
`vES |
`—
`Is beam changed?
`0
`NO
`Preamble Transmission Counter =
`Preamble Transmission Counter + 1
`| Random Access Fail
`
`2027
`
`
`
`:
`
`2225
`
`END
`
`33
`
`33
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 33 of 50
`
`US 2017/0251460 Al
`
`FIG, 23
`
`P+n-Delta
`
`P+2-Delta
`
`E&] check DL Measurement result and identify best DL RX beam
`
`RACH preamble transmission using UL TX beam reciprocal to best DL RX beam.
`ZA TX beam is transmitted multiple times for RX Sweeping atBS.
`
`34
`
`34
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 34 of 50
`
`US 2017/0251460 Al
`
`FIG. 24
`
`Preamble Transmission Counter = 1
`
`Determine the UL TX beam
`for PRACH transmission
`
`
`
`
`
`
`
`
`
`
`2405
`
`Power Ramping = (Preamble Transmission
`Counter -1} PowerRampingStep
`TX Power = P+Power Ramping
`an
`
`ne _ nant
`teamed DRAAL
`iFanSMit PRAGH Dreamole one OF Multiple {mes
`“ee
`(for RX sweepingat BS) using
`determined UL TX beam and TX Power
`
`
`
`1. Bis initial Power
`2. MAX TX Counter configured
`by network
`
`a
`
`~~,
`
`ura
`
`'
`
`<M Successfullyecco Random AccessSuccess
`
`
`
`
`
`
`2415
`~
`YES
`[naamAnnnontal
`Random AccessFail
`
`NO
`| 2417
`_
`|
`|~
`Preamble Transmission Counter =
`
`3 Gdie|EdHoliigalOil LOU
`Preambie Transmission Counter+ 1
`|
`
`END
`
`35
`
`35
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 35 of 50
`
`US 2017/0251460 Al
`
`FIG. 25
`
`i
`Preamble Transmission Counter = 1
`
`Determine the UL TX beam
`for PRACH transmission
`
`2501
`-
`
`2503
`—/
`
`—
`Power Ramping = (Preamble Transmission
`Counter -1} PowerRampingstep
`TX Power = P+Power Ramping
`
`
`Transmit PRACH preamble multiple times
`{for RX sweeping at BS) using
`determined UL TX beam and TX Power
`
`2005
`
`2907
`-
`
`
`
`1. Pis initial Power
`2, MAX TX Counter
`configured by network
`
`.
`RAR Successfully received?
`
`2508
`
`YES
`
`251
`
`Random Access Success
`
`
`
`
`
`
`2513
`
`
`
`
`PRACH transmitted for
`all BX beams at BS?
`
`Preamble Transmission Counter
`equals MAX TX COUNTER?
`
`
`Preamble Transmission Counter =
`Preamble fransmissien Counter + 1
`
`2017
`Random AccessFail
`
`ys
`
`2519
`
`36
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 36 of 50
`
`US 2017/0251460 Al
`
`FIG. 26
`
`P+Delta
`
`P+Delta
`
`
`
`Attempt1
`
`Attempt 2
`
`Attempt 3
`
`Attempt 4
`
`se} Check DL Measurementresult and identify best OL RX beam
`
`777] RACH preamble transmission using UL TX beam reciprocalto best DL RX beam
`“A TX beam is transmitted one time or multiple times for RX Sweeping at BS.
`
`F=| Beam is not changed
`
`[|/]] Beam is changed
`
`37
`
`37
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 37 of 50
`
`US 2017/0251460 Al
`
`FIG. 27
`
`START
`
`Preamble Transmission Counter = 1
`
`Determine the UL TX beam
`for PRACH transmission
`
`2701
`
`2703
`~
`
`1. P is initial Power
`2. MAX TK Counter
`configured by network
`
`2711
`=
`Random Access Success
`
`O15
`pa
`Random Access Fail
`
`Tx Power= P
`
`
`
`Transmit PRACH preamble one or multiple times
`[for RX sweeping at BS) using
`
`
`determined UL TX beam and TX Power
`
`
`|
`VES
`
`RAR Successfully received?
`
`ani
`
`
`
`Preamble Transmission Counter
`equals MAX TX COUNTER?
`
`
`
`2705
`
`2107
`
`YES
`
`2m?
`
`2719
`
`Determine the UL TX beam for PRACH transmission
`
`2721
`
`
`Preamble Transmission Counter=
`
`Preamble Transmission Counter + 1
`
`
`is beam changed?
`to
`
`2723
`
`
`
`TX Power = TX Power + PowerRampingstep
`
`END
`
`38
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 38 of 50
`
`US 2017/0251460 Al
`
`FIG. 28A
`
`Preamble Transmission Counter= 1
`
`
`
`
`for PRACH transmission
`
`'
`
`2809
`
`1. P is initial Power
`9. MAX TX Counter
`configured by network
`
`determined UL TX beam and TX Power
`
`Transmit PRACH preamble one or multinie times
`
`, 2807
`|
`
`(for RX Sweeping at BS) using
`
`
`RAR Successfully received?
`|
`
`|
`
`
`
`
`
`PRACH transmitted for
`all RX beams at BS?
`
`YES
`
`|
`
`t
`
`2011
`Random Access Success
`
`
`
`i
`
`39
`
`39
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 39 of 50
`
`US 2017/0251460 Al
`
`FIG. 28B
`
`wn CONTINUE ----——~------=-====
`
`2811
`Random Access Fail
`
`2815
`
`
`
`Preamble Transmission Counter
`equals MAX TX COUNTER?
`
`NO
`
`YES
`
`Preamble Transmission Counter =
`Preamble Transmission Counter + 1
`
`2819
`
`2821
`
`Determine the UL TX beam for PRACH transmission
`
`YES
`
`is beam changed?
`
`2823
`_
`
`"
`
`2825
`
`rc
`
`TX Power = TX Power + PowerRampingStep
`
`END
`
`40
`
`40
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 40 of 50
`
`US 2017/0251460 Al
`
`FIG. 29
`
`P+2«Delta
`
`P+Delta
`
`P+Delta
`ZL,
`
`
`Lhe
`
`
`irrrrtrrrtr
`Attempt1
`Attempt 2
`Attempt3
`Attempt 4
`
`[S&| Check DL Measurement result and identify best DL RX beam
`
`fon us
`t
`GH CHA BRE
`Gok
`PRD
`TX beam is transmitted one time
`
`F=| Beam is not changed
`
`[|||] Beam is changed
`
`A1
`
`41
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 41 of 50
`
`US 2017/0251460 Al
`
`FIG. 30A
`
`START
`
`Preamble Transmission Counter = 1
`
`Determine the UL TX beam
`for PRACH transmission
`
`Th Power = P
`
`Transmit PRACH preamble one or multiple times
`[for RX sweeping at BS) using
`
`determined UL TX beam and TX Power
`
`3001
`
`3003
`
`3005
`
`3007
`
`1. P is initial Power
`9. MAX TX Counter
`configured by network
`
`3009
`
`RAR Successfully received?
`
`
`
`YES
`
`NO
`
`3011
`Random Access Success
`
`42
`
`42
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 42 of 50
`
`US 2017/0251460 Al
`
`FIG. 80B
`
`Wo CONTINUE -----~-~-~----=-==n
`
`3015
`a 8018
`
` Random AccessFail Preamble Transmission Counterequals MAX TX COUNTER?
`
`I
`
`
`
`
`
`30V7
`Preamble Transmission Counter =
`
`
`Preamble Transmission Counter+ 1
`
`3019
`
`
`| Determine the UL Tx beam for PRACH transmission
`
`43
`
`43
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 43 of 50
`
`US 2017/0251460 Al
`
`FIG. 31A
`
`START
`
`Preamble Transmission Counter= 1
`
`Determine the UL TX beam
`for PRACH transmission
`
`Th Power =
`
`
`Transmit PRACH preamble one or multiple times
`(for RX Sweeping at BS) using
`determined UL TX beam and TX Power
`
`3109
`
`3101
`
`3103
`
`3105
`
`3107
`J
`
`1. Pis initial Power
`2. MAX TX Counter
`configured by network
`
`3111
`
`
`
`
`
`RAR Successfully received?
`
`YES
`
`Random Access Success
`
`HO
`
`3113
`—_/
`
`PRACHtransmitted for
`all RX beams at BSP
`
`YES
`
`44
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 44 of 50
`
`US 2017/0251460 Al
`
`FIG. 31B
`
`Wo CONTINUE ~————~ ==nnn
`
`
`
`equals MAX TX COUNTER? — Mrnnnnneeed
`
`
`
`
`Preamble Transmission Counter =
`Preamble Transmission Counter+ 1
`
`
` Is beam changed?
`
`j No
`TX Power = TX Power + PowerRampingStep
`
`312
`|
`
`|
`
`
`rs
`
`45
`
`45
`
`

`

`Patent Application Publication
`
`Aug. 31, 2017 Sheet 45 of 50
`
`US 2017/0251460 Al
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`Patent Application Publication
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`Aug. 31, 2017 Sheet 46 of 50
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`Aug. 31, 2017 Sheet 48 of 50
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`US 2017/0251460 Al
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`Patent Application Publication Aug. 31,2017 Sheet 49 of 50
`
`US 2017/0251460 Al
`
`FIG. 36
`
`3600
`
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`
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`
`Controller
`
`50
`
`50
`
`

`

`Patent Application Publication Aug. 31,2017 Sheet 50 of 50
`
`US 2017/0251460 Al
`
`FIG. 37
`
`3700
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`51
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`51
`
`

`

`US 2017/0251460 Al
`
`Aug. 31, 2017
`
`APPARATUS AND METHOD FOR
`PERFORMING RANDOM ACCESS IN
`BEAM-FORMED SYSTEM
`
`CROSS-REFERENCE TO RELATED
`
`APPLICATION(S)
`
`[0001] This application claimsthe benefit under 35 U.S.C.
`§119(e) ofa US. provisional patent application filed on Feb.
`26, 2016 in the U.S. Patent and Trademark Office and
`assigned Ser. No. 62/300,333, and of a U.S. provisional
`patent application filed on May 11, 2016 in the U.S. Patent
`and Trademark Office and assigned Ser. No. 62/334,660, the
`entire disclosure of each of which is hereby incorporated by
`reference.
`
`TECHNICAL FIELD
`
`[0002] The present disclosure relates to wireless commu-
`nication technologies. More particularly, the present disclo-
`sure relates to a filter bank multicarrier (FBMC) modulation-
`based signal transmitting method, signal receiving method
`and device.
`
`BACKGROUND
`
`To meet the demandfor wireless data traffic having
`[0003]
`increased since deployment of 4th-generation (4G) commu-
`nication systems, efforts have been made to develop an
`improved 5th-generation (5G) or pre-SG communication
`system. Therefore, the 5G or pre-5G communication system
`is also called a ‘beyond 4G network’ or a ‘post long term
`evolution (LTE) System’. The 5G communication system is
`considered to be implemented in higher frequency (mm-
`Wave) bands, e.g., 60 GHz bands, so as to accomplish higher
`data rates. To decrease propagation loss of the radio waves
`and increase the transmission distance, the beamforming,
`massive multiple-input multiple-output
`(MIMO),
`full
`dimensional MIMO (FD-MIMO), array antenna, an analog
`beam forming, large scale antenna techniques are discussed
`in 5G communication systems. In addition, in 5G commu-
`nication systems, developmentfor system network improve-
`ment is under way based on advanced small cells, cloud
`radio access networks
`(RANs), ultra-dense networks,
`device-to-device (D2D) communication, wireless backhaul,
`moving network, cooperative communication, coordinated
`multi-points (CoMP), reception-end interference cancella-
`tion andthe like. In the 5G system, hybrid frequency shift
`keying (FSK) and quadrature amplitude modulation (QAM)
`modulation (FQAM)andsliding window superposition cod-
`ing (SWSC)as an advanced coding modulation (ACM), and
`filter bank multi carrier (FBMC), non-orthogonal multiple
`access (NOMA), and sparse code multiple access (SCMA)
`as an advanced access technology have been developed.
`[0004] The Internet, which is a human centered connec-
`tivity network where hum