I 1111111111111111 1111111111 111111111111111 IIIII IIIII IIIII 111111111111111111
`US010455621B2
`
`c12) United States Patent
`Agiwal et al.
`
`(IO) Patent No.: US 10,455,621 B2
`(45) Date of Patent:
`Oct. 22, 2019
`
`(54) APPARATUS AND METHOD FOR
`SIGNALING SYSTEM INFORMATION
`
`(71) Applicant: Samsung Electronics Co., Ltd.,
`Suwon-si, Gyeonggi-do (KR)
`
`(72)
`
`Inventors: Anil Agiwal, Suwon-si (KR); Youngbin
`Chang, Anyang-si (KR)
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`10,200,920 B2 * 2/2019 Kubota
`10,257,772 B2 * 4/2019 Johansson .
`(Continued)
`
`H04W 36/0083
`H04W 48/10
`
`FOREIGN PATENT DOCUMENTS
`
`(73) Assignee: Samsung Electronics Co., Ltd.,
`Suwon-si (KR)
`
`WO
`WO
`
`2014-206311 Al
`2015-113384 Al
`
`12/2014
`8/2015
`
`( *) Notice:
`
`Subject to any disclaimer, the term ofthis
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 94 days.
`
`(21) Appl. No.: 15/443,307
`
`(22) Filed:
`
`Feb. 27, 2017
`
`(65)
`
`Prior Publication Data
`
`US 2017/0251500 Al
`
`Aug. 31, 2017
`
`Related U.S. Application Data
`
`(60) Provisional application No. 62/301,016, filed on Feb.
`29, 2016, provisional application No. 62/334, 706,
`filed on May 11, 2016.
`
`(51)
`
`Int. Cl.
`H04L 12118
`H04W 74108
`
`(2006.01)
`(2009.01)
`(Continued)
`
`(52) U.S. Cl.
`CPC ......... H04W 7410833 (2013.01); H04W 4106
`(2013.01); H04W 48112 (2013.01);
`(Continued)
`( 58) Field of Classification Search
`None
`See application file for complete search history.
`
`OTHER PUBLICATIONS
`
`Extended European Search Report dated Jan. 4, 2019, issued in a
`counterpart European application No. l 7760267.9-1215/3409048.
`(Continued)
`
`Primary Examiner - Sithu Ko
`Jefferson IP Law, LLP
`(74) Attorney, Agent, or Firm -
`ABSTRACT
`(57)
`The present disclosure relates to a communication method
`and system for converging a 5th-generation (5G) communi(cid:173)
`cation system for supporting higher data rates beyond a
`4th-generation (4G) system with a technology for internet of
`things (IoT). The present disclosure may be applied to
`intelligent services based on the 5G communication tech(cid:173)
`nology and the IoT-related technology, such as smart home,
`smart building, smart city, smart car, connected car, health
`care, digital education, smart retail, security and safety
`services. A method for receiving system information (SI) by
`a user equipment (UE) in a wireless communication system
`is provided. The method includes receiving, from a base
`station (BS), first type SI associated with SI which is
`essential for communication with the BS, transmitting, to the
`BS, a physical random access channel (PRACH) preamble
`based on the first type SI, receiving, from the BS, a random
`access response (RAR) message, and receiving, from the
`BS, second type SI associated with at least one SI which the
`UE needs.
`
`14 Claims, 20 Drawing Sheets
`
`I
`
`UE
`
`8110
`\ ___
`
`I
`
`I
`PeriOdic Broadcast: Minimum/
`Essential System lnforrna!iOn
`
`BS
`
`I
`
`8120
`'----·
`
`S130
`\. ___
`
`8140
`, __ "'
`
`8150
`• . .
`
`PRACH
`
`RAR
`[ Grant I
`
`Transmit SI reauest in grant receive(cid:143) in HAR
`Ut mai indicate Sllsl or set of
`Si·Reouest
`S!lsl or service or UE type
`!info about one or more S11s1 reauestedl I/
`BS transmits Sl-resoonse.
`I/ Scheduling control for SI-Response can (cid:143) e
`masked with UFs m or a ore defined 10
`Note: m can be different for different Si
`set or service or UE rvoe
`
`SI-Response
`[Requested Sl[sll
`
`Samsung Ex. 1002
`
`

`

`US 10,455,621 B2
`Page 2
`
`(51)
`
`Int. Cl.
`H04W 4106
`H04W72/04
`H04W72/14
`H04W 48112
`H04W 74/00
`(52) U.S. Cl.
`CPC ....... H04W 7210413 (2013.01); H04W 72114
`(2013.01); H04W 74/006 (2013.01)
`
`(2009.01)
`(2009.01)
`(2009.01)
`(2009.01)
`(2009.01)
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`2010/0027466 Al *
`
`2015/0016312 Al*
`
`2/2010 Mustapha ............ H04J 11/0069
`370/328
`H04W 74/0833
`370/280
`
`1/2015 Li
`
`3/2015 Vos
`2015/0085689 Al
`6/2015 Hwang et al.
`2015/0181624 Al
`10/2015 Bai et al.
`2015/0305065 Al
`2015/0382284 Al* 12/2015 Brismar
`
`2016/0150570 Al
`
`5/2016 Wang et al.
`
`H04W74/04
`370/329
`
`2016/0234735 Al*
`2016/0345325 Al
`2017/0265165 Al*
`
`8/2016 Kubota
`11/2016 Liu et al.
`9/2017 Li
`
`H04W 48/14
`
`H04W 48/14
`
`OTHER PUBLICATIONS
`
`NEC: Further clarification of on-demand S-BCH 3GPP Draft;
`Rl-063090; LTE BCH-On-Demand Clarification, 3rd Generation
`Partnership Project (3GPP), Mobile Competence Centre; 650, Route
`Des Lucioles; F-06921 Sophiaantipolis Cedex; France, vol. Ran
`WG2, No. Riga, Latvia; Nov. 1, 2006, Nov. 1, 2006, XP050132601.
`NEC: "LTE BCH-on-demand", 3GPP Draft; Rl-062930; LTE BCH
`on Demand, 3rd Generation Partnership Project (3GPP), Mobile
`Competence Centre ; 650, Route Des Lucioles ; F-06921 Sophia(cid:173)
`Antipolis Cedex; France, vol. Ran WG2, No. Seoul, Korea; Oct. 5,
`2006, Oct. 5, 2006, XP050132448.
`Nortel: "System Information broadcast gating", 3GPP; Draft;
`R2-063137, 3rd Generation Partnership Project (3GPP),
`Mobilecompetence Centre ; 650, Route; Deslucioles ; F-06921
`Sophia-Antipolis Cedex; France, vol. Ran WG2, No. Riga, Latvia;
`Nov. 1, 2006, Nov. 1, 2006, XP050132644.
`
`* cited by examiner
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 1 of 20
`
`US 10,455,621 B2
`
`FIG. 1
`
`I
`
`Periodic Broadcast: Minimum/
`Essential System Information
`
`I BS
`
`I
`
`I UE
`
`8110
`"---~
`
`S120
`\_ __
`
`8130
`'-----,
`
`PRACH
`
`AAA
`! Grant I
`
`S140
`
`\
`'•----~
`
`Si-Aeauest
`!Info about one or more SUsJ reauestedl
`
`8150
`\ __ ,--..,
`
`SI-Response
`meauested 8Usll
`
`.
`
`-
`
`Transmit SI reouest in grant received in RAR
`UE may indicate SUsl or set of
`Slisl or service or UE type
`
`/
`
`BS transmits Si-response.
`/ Scheduling control for SI-Response can be
`masked with UE's ID or a ore defined I(cid:143)
`Note: m can be different for different SI
`set or service or UE woe
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 2 of 20
`
`US 10,455,621 B2
`
`FIG. 2
`
`Bitmap of size N bits
`
`bO
`
`b 1 -- ---- ---
`
`--- ---
`
`-- bn
`
`System
`information
`oarameters
`
`SIB 1
`
`SIB 2
`
`SIB N
`
`Samsung Ex. 1002
`
`

`

`"'""' = N
`
`N
`O'I
`UI
`UI
`"'""' = ~
`d r.,;_
`
`SIB Set P
`
`SIB N
`
`~
`
`('D
`
`0 ....
`.....
`rJJ =- ('D
`
`0
`N
`
`0 ....
`
`1,0
`
`~
`
`N
`N
`N
`:-+-
`0
`
`(')
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`l
`\
`
`/
`
`)
`
`__J
`
`---------
`"--
`
`I
`
`~ SIB Set 2
`
`SIB 1 ~ ~ SIB Set 1
`
`[e.g. based on
`
`UE type, etcl
`
`service,
`
`Mapping
`
`Pre-Defined
`
`I
`I
`I
`I
`
`parameters
`information
`
`System
`
`bO ! b1 I------I bp I
`
`Bitmao of size P bits
`
`FIG. 3
`
`Samsung Ex. 1002
`
`

`

`"'""' = N
`
`N
`O'I
`UI
`UI
`"'""' = ~
`d r.,;_
`
`0 ....
`.....
`rJJ =(cid:173)
`
`.i;...
`
`('D
`('D
`
`0
`N
`
`0 ....
`
`1,0
`
`~
`
`N
`N
`N
`:-+-
`0
`
`(')
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`i----------
`
`S! Set P
`
`bO I b1 !-----~ bo
`
`Bitmm.1 of size P bits
`
`SI Set 2
`
`SI Set 1
`
`FIG. 4
`
`!e.g, based on
`
`UE tyoe. etcl
`
`service,
`
`Pre-Defined
`
`Maoolng
`
`parameters
`Information
`
`System
`
`Samsung Ex. 1002
`
`

`

`"'""' = N
`
`N
`O'I
`UI
`UI
`"'""' = ~
`d r.,;_
`
`0 ....
`Ul
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`0
`N
`
`0 ....
`
`1,0
`
`N
`N
`N
`:-+-
`0
`
`~
`
`(')
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`service and System Information
`Pre-Defined Maoolng between
`
`Serv:ce N I I SI Set N
`
`Service N ~
`
`SI Set 2
`
`SI Set 1
`
`Service 2
`
`Service 1
`
`bO I b1 I-----~ bn
`
`Bitmao of size N bits
`
`FIG. 5
`
`Service 2
`
`Service 1
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 6 of 20
`
`US 10,455,621 B2
`
`FIG. 6
`
`I UE
`
`S610
`'-,
`'
`
`S62Q
`\ ____ ,
`
`8630
`\_ __
`
`8640
`' '---
`
`I
`
`Periodic Broadcast: Minimum/
`Essential System Information
`
`I BS
`
`I
`
`-
`
`PRACH
`
`RAR
`I Grant l
`
`Sl-Reouest
`
`Transmit SI reauest in grant received in RAR
`
`S650
`
`\._~
`
`SI-Response
`[SI corresponding to service suooortedl
`
`BS transmits SHesoonse corresponding to
`service supported.
`/ Scheduling control for SI-Response can be
`masked with UE's IO or a ore defined ID
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 7 of 20
`
`US 10,455,621 B2
`
`FIG. 7
`
`I l!E
`
`S710
`
`\-----,
`
`S720
`\ ____ "
`
`I
`
`Perioaic Broadcast: Minimum/
`Essential System Information
`
`I BS
`
`I
`
`PRACH
`
`-
`
`S730
`
`\__----,
`
`RAR
`( Common System Information, Grant J
`
`S740
`'
`'---,
`
`SI-Reau est
`i!nfo about one or more SUsl reauestedl
`
`S750
`'
`' -~
`
`SI-Resoonse
`meauested Sl!sJJ
`
`Transmit SI reauest in gram received in RAR
`
`/
`
`IJ! may indicate Sits! or set of
`Sl!sl or service or UE type
`
`BS transmits SHesoonse. Scheduling
`Control for SI-Response can oe masked
`/ with UE's m or a ore defined ID Note:
`m can be different for different SI
`set or service or LIE TYoe
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 8 of 20
`
`US 10,455,621 B2
`
`FIG. 8
`
`LIE
`
`S810
`·-, --
`
`\
`
`S820
`\_ ___ ,
`
`Periodic Broadcast: Minimum/
`Essential System Information
`
`PRACH
`
`BS
`
`-
`
`8830
`\ ... _~
`
`RAR
`I Common System Information, Grant l
`
`Samsung Ex. 1002
`
`

`

`"'""' = N
`
`N
`O'I
`UI
`UI
`"'""' = ~
`d r,r;_
`
`0 ....
`.....
`rJJ =(cid:173)
`
`1,0
`
`('D
`('D
`
`0
`N
`
`0 ....
`
`1,0
`
`~
`
`N
`N
`N
`:-+-
`0
`
`(')
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`Note: MultiOle RAH-SI can be transmitted
`2. RAC Message
`1. MAC CE
`RAR-SIP(cid:143)U
`
`1. Scheduling control's !e.g. P(cid:143)CCH'sl CRC is masked with soecmc
`AAA-SI Scheduling
`
`~ 2. Transmitted in a window relative to PRACH-SI transmission
`~ m [ore-def!nedl or RA-ANTI
`
`(Other System Inf ormationl
`
`RAA-SI/S! resoonse
`
`-
`
`\.._.,
`8930
`
`Alt3: Use PRACH time/f reQuency resource
`Alt2: Provided !n essential system information
`Alt1: Fixed relative to PSS/SSS/BCH/SFN zero
`PRACH-SI time/frnauern::y resource:
`
`I/ Alt2: Any PRACH Preamble
`
`Alt1: PRACH Preamble for SI IS ore-defined
`PRACH-SI Preamble:
`
`I
`
`BS
`
`FIG. 9
`
`SI ReQuest: PRACH-Si
`
`\_._
`8920
`
`I
`
`Essential System information
`Periodic Broadcast: Minimum/
`
`I
`
`"----...
`I
`S910
`
`I UE
`
`Samsung Ex. 1002
`
`

`

`"'""' = N
`
`N
`O'I
`UI
`UI
`"'""' = ~
`d r.,;_
`
`0 ....
`0
`....
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`0
`N
`
`0 ....
`
`1,0
`
`~
`
`N
`N
`N
`:-+-
`0
`
`(')
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`Broadcast: Other System Information
`
`s 10?~--J
`
`from broadcast signaling
`Obtain system Information
`
`\ ___ j
`
`Essential System Information
`Periodic Broadcast: Minimum/
`
`ICATIOti = 1l
`
`\~~-
`\
`
`S1050
`
`I
`81060 --------,
`!SUXJN(cid:143)
`
`!Other System Information!
`
`SI Reoonse/RAR-SI
`
`SI Request: PRACH-SI
`
`\_..,
`
`srn~o
`
`81030
`
`\_ __
`
`other system information
`Transmit PRACH-SI to obtain
`
`Essential System information
`Periodic Broadcast: Minimum/
`
`[SLTX_IND!CATION = OJ
`
`\ __ _
`
`81010
`
`\._~
`
`srn20
`
`I
`
`BS
`
`I
`
`I
`
`I UE
`
`I
`
`I BS
`
`I
`
`UE
`
`I
`
`FIG. 10
`
`Samsung Ex. 1002
`
`

`

`"'""' = N
`
`N
`O'I
`UI
`UI
`"'""' = ~
`d r.,;_
`
`0 ....
`....
`....
`""""
`rJJ =(cid:173)
`
`('D
`('D
`
`0
`N
`
`0 ....
`
`1,0
`
`~
`
`N
`N
`N
`:-+-
`0
`
`(')
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`Note: Multiple RAR-SI can be transmitted
`2. RAC Message
`1. MAC CE
`RAR-S!P(cid:143)U
`
`Note: ID can be different for different SI set or service
`2. Transmitted in a window relative to PRACH-SI transmission
`[pre-defined] or RA-RNTI
`1. Scheduling control's !e.g. P(cid:143)CCH'sl CRC Is masked with soecmc
`RAR-S! Scheduling
`
`I(cid:143)
`
`/
`
`\
`
`rneauestea System lnformat1011J
`
`SI Aesoonse/RAA-Si
`
`SI or set of Sllsl or service
`Ait2: Provided In essential system Information. can be specific to
`Altt Fixed reiat!ve to PSS/SSS/BCH/SFN 0
`PRACH-SI tlme/freouency resource:
`
`PRACH Preamble specific to SI or a set of Sllsl or sernice is ore-
`PRACH-SI Preamble:
`
`V defined or conflg1.irect In essential system Information
`
`[Specific to SI or a set of Silsl or servicel _
`
`SI Reauest: PRACH-SI
`
`Essential System Information
`Periodic Broadcast: Minimum/
`
`I
`
`BS
`
`I
`
`I
`
`-
`
`\_, -
`
`81130
`
`\__ __
`S1120
`
`--
`
`\ ---
`81110
`
`I UE
`
`FIG. 11
`
`Samsung Ex. 1002
`
`

`

`"'""' = N
`
`N
`O'I
`UI
`UI
`"'""' = ~
`rJl.
`d
`
`0 ....
`N
`....
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`0
`N
`
`I~ -1~1cat1on to reouest tor s~em l;IOrmatlon ~r .
`
`-Indication that system information is oroaocasted
`
`0 ....
`
`1,0
`
`N
`N
`N
`:-+-
`0
`
`~
`
`(')
`
`I
`
`I
`I BS
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`FIG. 12
`
`!Reouested System Information!
`
`SI Response:RAR-SI
`
`!Specific to SI or a set of Sl!sl or servicel
`
`Si Reauest: PRACH-SI
`
`S1240
`
`\. ___ ,.
`81230
`
`Essential System Information
`Periodic Broadcast: Minimum/
`
`fSI JXJNDICATION = OI
`
`-I
`
`other system information
`Transmit PRACH-SI to obtain
`
`'-J •
`
`\.__
`81220
`
`81210
`
`j
`
`I UE
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 13 of 20
`
`US 10,455,621 B2
`
`FIG. 13
`
`LIE
`
`BS
`
`81310
`\. __
`
`Broadcast: Essential System Information &
`SUXJN(cid:143)
`!CATION=O
`
`S1320
`\._
`
`S1330
`
`PRACH-SI
`
`RAR-SI
`_____ ....._ _____ 81340
`___ ..,/
`Broadcast SUsl for defined time duration
`....------'-------. S1350
`___ .,/
`Broadcast SUJU',JD!GAT!ON = 1
`
`S1360
`
`\_
`
`Broadcast: Essential System Information &
`SLDUN(cid:143)
`!CATION=1
`
`81370
`\-~-, ____ B_ro_ad_ca_s_t S_!ls_l ___ --r
`
`location of Sl[sl can be Indicated in
`essential system information
`
`D System info not brnadcasted ~ System Info brnadcasted
`111 SLTX.Jnd = 0
`11 SLTX.Jnd = 1
`
`PRACH - SI
`
`PRACH - SI
`
`Event Triggered
`Broadcast
`
`Event Triggered
`Broadcast
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 14 of 20
`
`US 10,455,621 B2
`
`FIG. 14
`
`UE
`
`81410
`I \. ___ -.
`
`::::
`
`81420
`\. ___ "\
`
`BS
`
`Periodic Broadcast: Minimum/
`Essential System Information
`
`RAC Connection Setuo
`
`81430
`\ .. -...,
`
`S!-Reauest
`!Info about one or more S!lsl reauestedl
`
`-
`
`81440
`I '-----.
`
`::::
`
`S!-Resoonse
`meauested Sl!sll
`
`Samsung Ex. 1002
`
`

`

`""'"' = N
`
`N
`O'I
`UI
`UI
`""'"' = ~
`d r.,;_
`
`0 ....
`Ul
`....
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`0
`N
`
`ootions exolained earlier if all system information
`Other system information can l:le obtained using
`
`is not broadcasted
`
`an or common System information
`
`Broadcast: Essential or
`
`-·
`
`"---,
`S1530
`
`same BW in which PSS/SSS is received
`PRACH-SI timeifreouency resource: Fixed relative to PSSiSSS. In
`
`/
`
`PRACH-SI Preamble: PRACH Preamole for Si IS ore-defined
`
`PRACH-Si
`
`'"--
`S1520
`
`0 ....
`
`1,0
`
`N
`N
`N
`:-+-
`0
`
`~
`
`(')
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`I 5G Cell I
`
`I
`
`UE
`
`FIG. 15
`
`PSS/SSS
`
`I -----, -
`
`S1510
`I
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 16 of 20
`
`US 10,455,621 B2
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 17 of 20
`
`US 10,455,621 B2
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 18 of 20
`
`US 10,455,621 B2
`
`C'-.1 =
`......
`53 5!
`53
`ro
`ca
`t'C
`(lJ w
`(lJ
`< < <
`00 00 00
`
`~ ~ " (cid:143)
`
`Samsung Ex. 1002
`
`

`

`U.S. Patent
`
`Oct. 22, 2019
`
`Sheet 19 of 20
`
`US 10,455,621 B2
`
`FIG. 19
`
`AO
`
`A1
`
`81
`
`B1
`
`~ BO
`~ BO
`I\ I\
`I\ I\
`
`co
`ldx 0
`
`Cl
`idx 1
`
`CO
`ldx 2
`
`G1
`idx 2
`
`co
`idx 4
`
`C1
`ictx 5
`
`CO
`ldx 6
`
`Cl
`ictx 7
`
`Samsung Ex. 1002
`
`

`

`"'""' = N
`
`N
`O'I
`UI
`UI
`"'""' = ~
`d r.,;_
`
`~
`
`Cell#5, ldx Y
`
`Q
`
`Ce!!#6, ldx X
`
`/
`
`Ceil#4, !dx X
`
`Cell#7, ldX X
`
`u
`
`Cell#3, ldx X
`
`--
`
`0 ....
`
`0
`N
`.....
`rJJ =- ('D
`
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`
`0
`N
`
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`
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`
`N
`N
`N
`:-+-
`0
`
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`
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`
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`Q
`Q
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`e •
`
`FIG. 20
`
`--
`Q
`Q \
`
`Cell#1, ldx X
`
`Ceil#2. idx Y
`
`Samsung Ex. 1002
`
`

`

`US 10,455,621 B2
`
`1
`APPARATUS AND METHOD FOR
`SIGNALING SYSTEM INFORMATION
`
`CROSS-REFERENCE TO RELATED
`APPLICATION(S)
`
`This application claims the benefit under 35 U.S.C. §
`119(e) of a U.S. Provisional application filed on Feb. 29,
`2016 in the U.S. Patent and Trademark Office and assigned
`Ser. No. 62/301,016, and U.S. Provisional application filed
`on May 11, 2016 in the U.S. Patent and Trademark Office
`and assigned Ser. No. 62/334,706, the entire disclosure of
`each of which is hereby incorporated by reference.
`
`TECHNICAL FIELD
`
`The present disclosure relates to a wireless communica(cid:173)
`tion system. More particularly, the present disclosure relates
`to an apparatus and method for transmitting and receiving
`system information.
`
`BACKGROUND
`
`To meet the demand for wireless data traffic having
`increased since deployment of fourth generation ( 4G) com(cid:173)
`munication systems, efforts have been made to develop an
`improved fifth generation (5G) or pre-5G 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(cid:173)
`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(cid:173)
`nication systems, development for system network improve(cid:173)
`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(cid:173)
`tion and the like. In the 5G system, hybrid frequency shift
`key (FSK) and quadrature amplitude modulation (QAM)
`modulation (FQAM) and sliding window superposition cod(cid:173)
`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.
`The Internet, which is a human centered connectivity
`network where humans generate and consume information,
`is now evolving to the Internet of things (IoT) where
`distributed entities, such as things, exchange and process
`information without human intervention. The Internet of
`everything (IoE), which is a combination of the IoT tech(cid:173)
`nology and the Big Data processing technology through
`connection with a cloud server, has emerged. As technology
`elements, such as "sensing technology", "wired/wireless 60
`communication and network infrastructure", "service inter(cid:173)
`face technology", and "Security technology" have been
`demanded for IoT implementation, a sensor network, a
`machine-to-machine (M2M) communication, machine type
`communication (MTC), and so forth have been recently 65
`researched. Such an IoT environment may provide intelli(cid:173)
`gent Internet technology services that create a new value to
`
`2
`human life by collecting and analyzing data generated
`among connected things. IoT may be applied to a variety of
`fields including smart home, smart building, smart city,
`smart car or connected cars, smart grid, health care, smart
`5 appliances and advanced medical services through conver(cid:173)
`gence and combination between existing information tech(cid:173)
`nology (IT) and various industrial applications.
`In line with this, various attempts have been made to
`apply 5G communication systems to IoT networks. For
`10 example, technologies such as a sensor network, MTC, and
`M2M communication may be implemented by beamform(cid:173)
`ing, MIMO, and array antennas. Application of a cloud RAN
`as the above-described Big Data processing technology may
`also be considered to be as an example of convergence
`15 between the 5G technology and the IoT technology.
`In the recent years, several broadband wireless technolo(cid:173)
`gies have been developed to meet the growing number of
`broadband subscribers and to provide more and better appli(cid:173)
`cations and services. The second generation wireless com-
`20 munication system has been developed to provide voice
`services while ensuring the mobility of users. Third genera(cid:173)
`tion wireless communication system supports not only the
`voice service but also data service.
`In recent years, the fourth wireless communication system
`25 has been developed to provide high-speed data service.
`However, currently, the fourth generation wireless commu(cid:173)
`nication system suffers from lack of resources to meet the
`growing demand for high speed data services. So fifth
`generation wireless communication system is being devel-
`30 oped to meet the growing demand for high speed data
`services, support ultra-reliability and low latency applica(cid:173)
`tions and support massive machine type communication.
`In the fourth generation wireless communication system,
`enhanced node B (eNB) or base station (BS) in cell broad-
`35 cast system information. System information is structured
`into master information block (MIB) and a set of system
`information blocks (SIBs ). MIB consists of system frame
`number (SFN), downlink system bandwidth and physical
`hybrid automatic repeat request (ARQ) feedback indicator
`40 channel (PRICH) configuration. An MIB is transmitted
`every 40 ms. It is repeated every 10 ms wherein the first
`transmission occurs in subframe #0 when SFM mod 4 equals
`zero. MIB is transmitted on physical broadcast channel. SIB
`Type 1 carries cell indenmity, tracking area code, cell
`45 barring information, value tag ( common for all scheduling
`units), and scheduling information of other SIBs. SIB 1 is
`transmitted every 80 ms in subframe #5 when SFN mod 8
`equals zero. SIB 1 is repeated in subframe#S when SFN mod
`2 equals zero. SIB 1 is transmitted on Physical downlink
`50 shared channel. Other SIBs (SIB 2 to SIB 19) are transmitted
`in system information (SI) message wherein scheduling info
`of these SIBs are indicated in SIB 1. SIBs having same
`periodicity can be transmitted in one SI message. SI message
`is broadcasted on Physical downlink shared channel. Vari-
`55 ous SIBs, their usage and typical size is indicated in Table
`1 below.
`
`TABLE 1
`
`System Information in 4G System
`
`SIB Type
`
`Content
`
`SIB 1
`SIB 2
`SIB 3
`
`SIB 4
`
`Cell ID, value tag & Scheduling info
`AC-Barring, RACH Info
`Common Cell reselection info & intra
`frequency cell reselection parameters
`Intra frequency neighbor cell info
`
`SIB Size
`
`~500 bits
`2216 bits (Max)
`~100 bits
`
`~750 bits
`
`Samsung Ex. 1002
`
`

`

`US 10,455,621 B2
`
`3
`TABLE I-continued
`
`System Information in 4G System
`
`SIB Type Content
`
`SIB 5
`
`SIB 6
`SIB 7
`SIB 8
`
`SIB 9
`SIB 10
`SIB 11
`SIB 12
`SIB 13
`
`SIB 14
`
`SIB 15
`
`SIB 16
`SIB 17
`
`SIB 18
`
`SIB 19
`
`Inter frequency cell reselection
`information
`UTRA. cell reselection information
`GERAN cell reselection information
`CDMA 2000 cell reselection
`information
`Home eNB Info
`ETWS Primary Notification
`ETWS Secondary Notification
`CMAS Notification
`MBMS Information to acquire MBMS
`Control information
`Extended Access Class Barring
`Information
`MBMS Service Area Identifiers of tbe
`current and neighboring frequencies
`UTC Time
`Information for traffic steering between
`E-UTRAN and WLAN
`Intra Frequency D2D Communication
`Information
`Intra/inter frequency D2D Discovery
`Information
`
`SIB Size
`
`~1000 bits
`
`~1000 bits
`~1000 bits
`2216 bits (Max)
`
`~56 bits
`2216 bits (Max)
`2216 bits (Max)
`2216 bits (Max)
`~300 bits
`
`~100 bits
`
`2216 bits (Max)
`
`~60 bits
`2216 bits (Max)
`
`2216 bits (Max)
`
`2216 bits (Max)
`
`4
`system information blocks (SIBs) is that MIB/SIBs are
`periodically broadcasted irrespective of whether a user
`equipment (UE) is there in cell or not; whether any UE in
`cell needs that information. In case of small cell deployment,
`broadcasting all these SIBs periodically is unnecessary and
`leads to significant wastage of resources and increased
`energy consumption.
`Next Generation communication system is considering
`carrier frequency ranges up to 100 GHz. At higher frequen(cid:173)
`cies, beamforming is essential to compensate for path loss.
`One transmission beam cannot provide the full cell cover(cid:173)
`age. Multiple transmission beams are needed. In order to
`broadcast the system information, system information needs
`to be transmitted using multiple transmission beams by
`switching a transmission (TX) beam across multiple time
`slots. Overhead (time/frequency resources) of transmission
`of system information using beamforming is N times more
`than transmission of system information without beamform(cid:173)
`ing where 'N' is the number of transmission beams. The
`transmission resources remaining after resources consumed
`for transmission of system information may be used for data
`scheduling for a user in the direction of the downlink (DL)
`transmission beam. Therefore, if more time/frequency
`resources are consumed for transmission system information
`then user data scheduling becomes restrictive and inflexible.
`Additionally UE has to reacquire the system information
`when it moves from one cell to another cell. This leads to
`increased power consumption for mobile UEs. So an
`30 enhanced method of signaling system information is needed.
`
`5
`
`10
`
`15
`
`20
`
`25
`
`User equipment (UE) acquires the system information at
`cell selection, cell reselection, after handover completion,
`after entering evolved UMTS terrestrial radio access
`(E-UTRA) from another radio access technology (RAT),
`upon re-entering service area, upon receiving a notification
`(paging), and upon exceeding the maximum validity dura(cid:173)
`tion (3 hour).
`In radio resource control (RRC) idle state, UE needs to
`acquire MIB, SIB 1, SIB 2 to SIB 5, SIB 6 to SIB 8
`( depending on RAT supported), SIB 17 (if LTE-wireless 35
`local area network (WLAN) interworking (IWK) is sup(cid:173)
`ported), and SIB 18 to SIB 19 (ifD2D is supported). In RRC
`connected state, UE needs to acquire MIB, SIB 1, SIB 2, SIB
`8 ( depending on RAT supported), SIB 17 (if LTE-WLAN
`IWK is supported), and SIB 18 to SIB 19 (if D2D is 40
`supported). System information acquired and stored is con(cid:173)
`sidered invalid of if value tag in received SIB 1 is different
`from the one in stored SI.
`System information can be changed and is notified as
`follows: Change is notified through paging message (in
`RRC_IDLE or RRC_CONNECTED) with cause systemin(cid:173)
`foModification to let UE know that some SI is changing in
`the next modification period. Modification period boundar-
`ies are in terms of SFN such that SFN mod modification(cid:173)
`Period=0. Change of SI occurs at specific radio frames.
`Notification of changes in modification period N will be
`reflected in N+l. SIBl also carries value tag to indicate
`change in SI. UE finds the change in SI by looking at value
`tag in SIBl at the end modificationPeriod (if missed check(cid:173)
`ing page) or receiving paging with systeminfoModification.
`The above information is presented as background infor(cid:173)
`mation only to assist with an understanding of the present
`disclosure. No determination has been made, and no asser(cid:173)
`tion is made, as to whether any of the above might be
`applicable as prior art with regard to the present disclosure. 60
`
`Technical Solution
`
`Aspects of the present disclosure are to address at least the
`above-mentioned problems and/or disadvantages and to
`provide at least the advantages described below. Accord(cid:173)
`ingly, an aspect of the present disclosure is to provide a
`method for receiving system information (SI) by a UE in a
`wireless communication system. The method includes
`receiving, from a base station (BS), first type SI associated
`with SI which is essential for communication with the BS,
`transmitting, to the BS, a physical random access channel
`(PRACH) preamble based on the first type SI, receiving,
`from the BS, a random access response (RAR) message, and
`45 receiving, from the BS, second type SI associated with at
`least one SI which the UE needs.
`In accordance with an aspect of the present disclosure, a
`method for transmitting system information (SI) by a base
`station (BS) in a wireless communication system is pro-
`50 vided. The method includes transmitting, to a user equip(cid:173)
`ment (UE), first type SI associated with SI which is essential
`for communication with the UE, receiving, from the UE, a
`physical random access channel (PRACH) preamble based
`on the first type SI, transmitting, to the UE, a random access
`55 response (RAR) message, and transmitting, to the UE,
`second type SI associated with at least one SI which the UE
`needs.
`In accordance with an aspect of the present disclosure, a
`user equipment (UE) for receiving system information (SI)
`in a wireless communication system is provided. The UE
`includes a transceiver configured to transmit and receive a
`signal, and at least one processor configured to control
`receiving, from a base station (BS), first type SI associated
`with SI which is essential for communication with the BS,
`65 control transmitting, to the BS, a physical random access
`channel (PRACH) preamble based on the first type SI,
`control receiving, from the BS, a random access response
`
`SUMMARY
`
`Technical Problem
`
`One of the issues in current method of transmitting system
`information using the master information block (MIB)/
`
`Samsung Ex. 1002
`
`

`

`US 10,455,621 B2
`
`5
`(RAR) message, and control receiving, from the BS, second
`type SI associated with at least one SI which the UE needs.
`In accordance with an aspect of the present disclosure, a
`base station (BS) for transmitting system information (SI) in
`a wireless communication system is provided. The BS 5
`includes a transceiver configured to transmit and receive a
`signal, and at least one processor configured to control
`transmitting, to a user equipment (UE), first type SI asso(cid:173)
`ciated with SI which is essential for communication with the
`UE, control receiving, from the UE, a physical random
`access channel (PRACH) preamble based on the first type
`SI, control transmitting, to the UE, a random access response
`(RAR) message, and control transmitting, to the UE, second
`type SI associated with at least one SI which the UE needs.
`
`Advantageous Effects
`
`6
`FIG. 12 illustrates a method for indicating in broadcasted
`essential system information whether other system informa(cid:173)
`tion is broadcasted or not according to another embodiment
`of the present disclosure;
`FIG. 13 illustrates a method for acquiring system infor(cid:173)
`mation according to the other embodiment of the present
`disclosure;
`FIG. 14 illustrates a method for acquiring system infor(cid:173)
`mation according to the other embodiment of the present
`10 disclosure;
`FIG. 15 illustrates a method for acquiring system infor(cid:173)
`mation according to the other embodiment of the present
`disclosure;
`FIG. 16 illustrates a method for providing system infor-
`15 mation within a time window according to an embodiment
`of the present disclosure;
`FIG. 17 illustrates a method for providing system infor(cid:173)
`mation by monitoring a time window in one or more periods
`according to an embodiment of the present disclosure;
`FIG. 18 illustrates a method for configuring system infor(cid:173)
`mation area ID according to an embodiment of the present
`disclosure;
`FIG. 19 illustrates a method for indexing system infor(cid:173)
`mation parameters according to an embodiment of the
`25 present disclosure; and
`FIG. 20 illustrates a method for configuring a system
`information configuration identification (ID) according to an
`embodiment of the present disclosure.
`Throughout the drawings, like reference numerals will be
`30 understood to refer to like parts, components, and structures.
`
`In accordance with an aspect of the present disclosure, a
`user equipment (UE) and a BS are provided. The UE and BS 20
`are capable of signaling system information efficiently in a
`wireless communication system.
`Other aspects, advantages, and salient features of the
`disclosure will become apparent to those skilled in the art
`from the following detailed description, which, taken in
`conjunction with the annexed drawings, discloses various
`embodiments of the present disclosure.
`
`BRIEF DESCRIPTION OF DRAWINGS
`
`The above and other aspects, features, and advantages of
`certain embodiments of the present disclosure will be more
`apparent from the following description taken in conjunction
`with the accompanying drawings, in which:
`FIG. 1 illustrates a method for acquiring system informa- 35
`tion according to an embodiment of the present disclosure;
`FIG. 2 illustrates a method for categorizing system infor(cid:173)
`mation parameters into system information blocks (SIBs)
`according to an embodiment of the present disclosure;
`FIG. 3 illustrates a method for categorizing system infor- 40
`mation parameters into SIBs according to an embodiment of
`the present disclosure;
`FIG. 4 illustrates a method for categorizing system infor