WO2007148706A1 - 無線リソース割当方法及び無線基地局 - Google Patents
無線リソース割当方法及び無線基地局 Download PDFInfo
- Publication number
- WO2007148706A1 WO2007148706A1 PCT/JP2007/062353 JP2007062353W WO2007148706A1 WO 2007148706 A1 WO2007148706 A1 WO 2007148706A1 JP 2007062353 W JP2007062353 W JP 2007062353W WO 2007148706 A1 WO2007148706 A1 WO 2007148706A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- scheduling
- radio resource
- mobile station
- persistent
- radio
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000013468 resource allocation Methods 0.000 title claims abstract description 13
- 230000002085 persistent effect Effects 0.000 claims abstract description 67
- 238000004891 communication Methods 0.000 claims description 11
- 230000002688 persistence Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 23
- 230000000694 effects Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000011664 signaling Effects 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 1
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- GVVPGTZRZFNKDS-JXMROGBWSA-N geranyl diphosphate Chemical compound CC(C)=CCC\C(C)=C\CO[P@](O)(=O)OP(O)(O)=O GVVPGTZRZFNKDS-JXMROGBWSA-N 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/11—Semi-persistent scheduling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Definitions
- the present invention relates generally to radio communication control technology, and in particular, uses both persistent scheduling (dynamic allocation scheduling) and dynamic scheduling (dynamic allocation scheduling).
- the present invention relates to a radio resource allocation method and a radio base station.
- a predetermined transmission time interval (TTI: Transmission Time Interval) is used by a downlink shared control channel (HS-SCCH: High Speed-Shared Control Channel).
- TTI Transmission Time Interval
- HS-SCCH High Speed-Shared Control Channel
- Powerful persistent scheduling is effective for low-rate communications where data arrives at regular intervals and requires overhead reduction, such as real-time voice communications applications.
- Fig. L (a) it is configured to allocate radio resources at a period corresponding to the type of application that is strong.
- the radio resource allocated by persistent scheduling is expected to be the smallest unit that matches the fixed transmission rate because the packet size after header compression is taken into account.
- the VoIP packet before header compression is composed of, for example, a 40-byte header and a payload, as shown in FIG. 1 (b).
- the payload size is an integer multiple of the sample size for voice communication (for example, 10 bytes), and is 30 bytes in the example of FIG. 1 (b).
- a compression algorithm is applied. Depending on the type of compression algorithm, the header can be compressed to a minimum of 1 byte. The compressed header contains only difference information and the total packet size is 31 bytes.
- discontinuous reception (DRX: Discontinuous reception) is performed during the period when persistent scheduling is performed in anticipation of the notting-saving effect. Reception) is assumed. For this reason, the effect of intermittent reception cannot be expected if persistent 'scheduling' and dynamic 'scheduling are used together.
- Non-Patent Document 3 (Non-Patent Document 3)
- the present invention has been made in view of the above points, and performs persistent 'scheduling and dynamic' scheduling for a mobile station during a period of persistent 'scheduling.
- An object is to provide a radio resource allocation method and a radio base station that can obtain an efficient battery saving effect even when used together.
- a first feature of the present invention is that the radio base station fixedly allocates radio resources used when transmitting downlink data to the mobile station by persistent 'scheduling, and the radio base station
- the method includes: a step B of changing a radio resource allocated to the mobile station by dynamic 'scheduling during a period in which the persistent' scheduling is applied.
- a subframe for transmitting downlink data to the mobile station is fixedly assigned as the radio resource by the persistent scheduling.
- the radio base station In the range of a predetermined number of subframes before and after the subframe fixedly allocated by persistent 'scheduling, additional radio resources are allocated to the mobile station by the dynamic' scheduling. Also good.
- the persistent scheduling may be applied when transmitting application data for low-rate communication at a constant speed as the downlink data.
- the radio base station may allocate the additional radio resource for the mobile station in a shared data channel.
- a second feature of the present invention is a radio base station, which is configured to permanently allocate radio resources used when transmitting downlink data to a mobile station. And the radio resource allocated to the mobile station is changed during a period in which the downlink data is transmitted to the mobile station using the fixedly allocated radio resource. And a dynamic 'scheduling section.
- the persistent 'scheduling unit is configured to fixedly allocate a subframe for transmitting the downlink data to the mobile station as the radio resource.
- the dynamic 'scheduling unit is added to the mobile station within a range of a predetermined number of subframes before and after the subframe fixedly allocated by the persistent' scheduling unit. It is configured to allocate radio resources.
- the persistent scheduling unit fixedly allocates the radio resource when transmitting application data for low-rate communication at a constant rate as the lower data. Configured to assign, okay.
- the dynamic scheduling unit may be configured to allocate the additional radio resource to the mobile station in a shared data channel.
- FIG. 1 is a diagram for explaining persistent ′ scheduling and header compression.
- FIG. 2 is a diagram showing an example of a radio resource allocation method in the case of using both persistent 'scheduling and dynamic' scheduling.
- FIG. 3 is a schematic block diagram of a radio base station according to one embodiment of the present invention.
- FIG. 4 is a diagram showing an example of a persistent scheduling pattern held by a scheduler of a radio base station.
- FIG. 2 is a diagram for explaining a radio resource allocation method according to an embodiment of the present invention.
- a period during which persistent 'scheduling is performed (persistent' scheduling period) is set to "20ms". In other words, it exists every 20 ms of voice traffic such as VoIP packets.
- One radio section of persistent 'scheduling (persistent' scheduling period) is composed of a plurality of subframes.
- the size of the subframe is “0.5 ms”
- one radio section (persistent 'scheduling period) of persistent' scheduling is composed of 40 subframes.
- Subframe 11 indicated by diagonal lines is a radio resource for initial transmission that is fixedly allocated by persistent 'scheduling.
- Dynamic 'scheduling combined section 12 is not limited to the range of 3 subframes before and after radio resources (subframes) fixedly allocated by persistent' scheduling. It can be selected as appropriate according to the design, such as by frame, by 4 subframes at the front and back. [0033] Such a dynamic 'scheduling combined section 12 may be determined in advance at the time of system design, or may be set by upper layer signaling or the like!
- a radio base station transmits a VoIP packet to a mobile station using radio resources (radio resources for initial transmission) that are fixedly assigned by persistent scheduling! During this period, if the VoIP packet with the amount of data that cannot be transmitted with the strong initial transmission radio resource arrives, or if the powerful mobile station is downlink controlled via a control channel such as DCCH.
- the radio base station selects and allocates radio resources with good radio conditions within the dynamic 'scheduling combined section 12' and allocates them to powerful mobile stations. Configured to transmit the specified radio resource.
- a common control channel for example, (L1 / L2 control channel) and shared data channel, downlink control information and downlink data can be appropriately received.
- the mobile station is transmitted using a common control channel (for example, an L1 / L2 control channel) or a shared data channel at a timing close to that of intermittently receiving voice packets and at a dynamic transmission timing.
- a common control channel for example, an L1 / L2 control channel
- a shared data channel at a timing close to that of intermittently receiving voice packets and at a dynamic transmission timing.
- Downlink control information and downlink data can be received.
- the mobile station By turning off the sections other than the dynamic 'scheduling combined section 12' in the mobile station, the mobile station also realizes battery saving, and achieves both dynamic radio resource allocation and battery saving. Can do.
- the mobile station If the mobile station fails to receive downlink data via the shared data channel in the dynamic 'scheduling combined section 12, the mobile station sends a retransmission request for the downlink data to the radio base station.
- the mobile station when the mobile station transmits the above-described retransmission request, after the elapse of a predetermined time, for example, after the elapse of the round trip time with the radio base station, the mobile station automatically enters the normal reception state (ON state). To prepare for reception of downlink data retransmitted via a retransmission channel.
- FIG. 3 is a schematic block diagram of a radio base station that performs radio resource allocation control as shown in FIG. It is.
- the radio base station 10 includes an RRC (Radio Resource Control) entity 11, an RLC (Radio Link Management) entity 12, a MAC control unit 13, a scheduler 14, a scheduling information generation unit 15, , A notch 16, a transmission unit 17, a reception unit 18, and a retransmission request determination unit 19.
- RRC Radio Resource Control
- RLC Radio Link Management
- the upper layer data is input to the RLC entity 12.
- the upper layer data may be U-plane data (for example, VoIP packet) or C-plane data (for example, RRC message specifying dynamic 'scheduling combined section 12).
- the RLC entity 12 is configured to divide the input upper layer data and input it to the scheduler 14.
- the scheduler 14 generates downlink control information to be transmitted via a common control channel such as an L1 / L2 control channel or downlink data to be transmitted via a shared data channel from the input upper layer data. It is configured to buffer to noffer 16.
- the dynamic 'scheduling unit 22 of the scheduler 14 uses the radio resources fixedly allocated by the persistent' scheduling unit 21 to transmit downlink data to the mobile station, and works during this period. It is configured to change the radio resources allocated to the mobile station.
- the dynamic 'scheduling unit 22 is fixedly assigned by the persistent' scheduling unit 21 and has a predetermined number of subframes (dynamic 'scheduling') before and after the subframe (transmission timing). It is configured to allocate additional radio resources to mobile stations within the combined section 12).
- the dynamic 'scheduling unit 22 may dynamically allocate a transmission opportunity to downlink data transmitted via the shared data channel within the range of the dynamic' scheduling combined use section 12 described above.
- a transmission opportunity can be dynamically assigned to downlink control information transmitted through the common control channel.
- the dynamic 'scheduling unit 22 performs a sub-frame (within the range of the dynamic' scheduling combined section 12) fixedly allocated by the persistent 'scheduling unit 21 to the mobile station. Allocation of additional radio resources will change the radio resources allocated to a strong mobile station It may be configured.
- persistent 'scheduling section 21 of scheduler 14 assigns fixedly radio resources (subframe (transmission timing) and frequency resource block) used when transmitting downlink data to the mobile station. It is composed of
- the persistent 'scheduling unit 21 holds a persistent scheduling timing pattern as shown in Fig. 4, and determines the transmission timing according to a certain type of application data such as VoIP. It is configured to control.
- the persistent scheduling unit 21 is configured to allocate frequency resource blocks in a predetermined pattern to each mobile station at regular intervals.
- the persistent scheduling unit 21 may be configured to change the frequency resource block to be used according to a predetermined pattern when the propagation environment with the mobile station is poor.
- the persistent scheduling unit 21 is configured to allocate radio resources in a fixed manner when transmitting application data (for example, VoIP packets) for performing low-rate communication at a constant speed as downlink data. It has been.
- application data for example, VoIP packets
- the scheduling information generator 15 is configured to generate dynamic 'scheduling information in accordance with the determination of the dynamic' scheduling unit 22.
- the scheduling information generating unit 15 is configured to generate persistent scheduling information according to the determination of the persistent scheduling unit 21.
- the dynamic 'scheduling unit 22 adds an additional radio to the mobile station in a subframe (in the range of the dynamic' scheduling combined section 12) fixedly allocated by the persistent 'scheduling unit 21.
- the scheduling information generation unit 15 may be configured to change the contents of the persistent scheduling information described above instead of generating the dynamic scheduling information described above.
- the scheduling information generation unit 15 performs the above-described persistent 'scheduling information after a predetermined period (for example, one persistent' scheduling period ') has elapsed.
- the contents may be returned to the original contents.
- the transmission unit 17 is a downlink that has been noffered with radio resources (subframes and frequency resource blocks) allocated to the corresponding mobile station according to the scheduling information generated by the scheduling information generation unit 15. It is configured to send data.
- the transmission unit 17 uses a radio resource (subframe and frequency resource block) fixedly allocated to the corresponding mobile station according to the persistent scheduling information generated by the scheduling information generation unit 15. ), And is configured to send downlink data! / Speak.
- a radio resource subframe and frequency resource block
- a reception confirmation response (ACK / NACK) for downlink data transmitted from the mobile station is received by the reception unit 18 and input to the retransmission request determination unit 19.
- the retransmission request determination unit 19 is configured to determine whether or not to perform retransmission on the downlink data based on the received reception confirmation response, and to input a strong determination result to the scheduler 14. Yes.
- the retransmission control unit 23 of the scheduler 14 is configured to perform scheduling for retransmission of the downlink data according to the determination result of the input retransmission request.
- the initial transmission power is also assigned to a predetermined subframe every fixed time (eg, round 'trip time) (synchronous) It is desirable to retransmit using type retransmission control.
- Radio resources that are additionally allocated using a channel transmitted to achieve dynamic 'scheduling (L1 / L2 control channel), a fixed time (eg, round' trip time) from the initial transmission.
- Retransmission may be performed using a method (asynchronous retransmission control) that is allocated to an arbitrary subframe after the elapse of time.
- the radio resources that are additionally allocated are also synchronized. It is desirable to retransmit using type retransmission control.
- a certain level of voice call As described above, according to the present embodiment, a certain level of voice call, videophone (VoIP), etc.
- VoIP videophone
- packets are transmitted based on persistent scheduling that allocates radio resources at regular intervals.
- radio resources can be dynamically allocated (dynamic scheduling is performed) to additional downlink data and control information transmitted via individual control channels.
- the mobile station can receive the L1 / L2 control channel appropriately and maintain the effect of intermittent reception by being in the normal reception state (ON state) for a predetermined period at a predetermined timing. it can.
- a mobile station receiving a service in persistent scheduling receives control information via an L1 / L2 control channel (common control channel) or the like. Therefore, it is not necessary to always be in the normal reception state (ON state), so the battery saving effect by intermittent reception can be expected.
- L1 / L2 control channel common control channel
- the efficiency is improved. It is possible to provide a radio resource allocation method and a radio base station that can obtain a practical notching-saving effect.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07767209A EP2037695A4 (en) | 2006-06-19 | 2007-06-19 | RADIO COMMUNICATION METHOD AND RADIO BASE STATION |
CN2007800225018A CN101473689B (zh) | 2006-06-19 | 2007-06-19 | 无线资源分配方法以及无线基站 |
US12/305,340 US20090190540A1 (en) | 2006-06-19 | 2007-06-19 | Radio resource assigning method and radio base station |
BRPI0713285-9A BRPI0713285A2 (pt) | 2006-06-19 | 2007-06-19 | Método de atribuição de recurso de rádio e estação de base de rádio |
JP2008522482A JP5184352B2 (ja) | 2006-06-19 | 2007-06-19 | 無線リソース割当方法及び無線基地局 |
AU2007262023A AU2007262023A1 (en) | 2006-06-19 | 2007-06-19 | Radio resource allocation method and radio base station |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-169457 | 2006-06-19 | ||
JP2006169457 | 2006-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007148706A1 true WO2007148706A1 (ja) | 2007-12-27 |
Family
ID=38833448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/062353 WO2007148706A1 (ja) | 2006-06-19 | 2007-06-19 | 無線リソース割当方法及び無線基地局 |
Country Status (10)
Country | Link |
---|---|
US (1) | US20090190540A1 (ja) |
EP (1) | EP2037695A4 (ja) |
JP (1) | JP5184352B2 (ja) |
KR (1) | KR20090019840A (ja) |
CN (1) | CN101473689B (ja) |
AU (1) | AU2007262023A1 (ja) |
BR (1) | BRPI0713285A2 (ja) |
RU (1) | RU2009100412A (ja) |
TW (1) | TW200812326A (ja) |
WO (1) | WO2007148706A1 (ja) |
Cited By (20)
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WO2009022669A1 (ja) * | 2007-08-14 | 2009-02-19 | Ntt Docomo, Inc. | 基地局装置及び移動局装置並びに通信制御方法 |
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WO2009116837A1 (en) * | 2008-03-21 | 2009-09-24 | Lg Electronics Inc. | Method of data communication in a wireless communication system |
KR100925442B1 (ko) | 2008-03-21 | 2009-11-06 | 엘지전자 주식회사 | 무선 통신 시스템에서의 데이터 통신 방법 |
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JP2010226202A (ja) * | 2009-03-19 | 2010-10-07 | Fujitsu Ltd | 無線リソースのスケジューリング方法および無線通信装置 |
EP2262340A1 (en) * | 2008-03-28 | 2010-12-15 | Ntt Docomo, Inc. | Radio resource selecting method, mobile station and radio base station |
JP2011015318A (ja) * | 2009-07-06 | 2011-01-20 | Hitachi Ltd | 無線通信装置またはシステム |
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JP2011066639A (ja) * | 2009-09-16 | 2011-03-31 | Kddi Corp | 無線リソース割当装置および無線リソース割当方法 |
US7936731B2 (en) | 2008-03-13 | 2011-05-03 | Lg Electronics Inc. | Method of processing HARQ by considering measurement gap |
JP2012034055A (ja) * | 2010-07-28 | 2012-02-16 | Kyocera Corp | 無線通信システム、無線基地局及び通信制御方法 |
JP2012514950A (ja) * | 2009-01-09 | 2012-06-28 | 株式会社エヌ・ティ・ティ・ドコモ | 干渉低減のためのフェムトセルネットワークにおける時間/周波数拡散のための方法 |
JP2012213218A (ja) * | 2007-08-14 | 2012-11-01 | Nec Corp | ダウンリンク多重化 |
US8446859B2 (en) | 2008-02-01 | 2013-05-21 | Lg Electronics Inc. | Method for controlling uplink load in cell— FACH state |
JP2014042361A (ja) * | 2008-11-05 | 2014-03-06 | Huawei Technologies Co Ltd | セミパーシステントスケジューリングデータパケットの確認応答情報をフィードバックする方法、装置、基地局、及びプログラム |
US9634818B2 (en) | 2008-11-05 | 2017-04-25 | Huawei Technologies Co., Ltd. | Method and apparatus for feeding back and receiving acknowledgement information of semi-persistent scheduling data packets |
JP2017516379A (ja) * | 2014-04-10 | 2017-06-15 | クゥアルコム・インコーポレイテッドQualcomm Incorporated | ネットワークパラメータに基づく電力最適化のための技術 |
JP2021505017A (ja) * | 2017-11-27 | 2021-02-15 | クアルコム,インコーポレイテッド | 共有スペクトルダウンリンクのための半永続スケジューリング |
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AU2008212453B2 (en) * | 2007-02-02 | 2011-01-06 | Mitsubishi Electric Corporation | Communication method, base station, communication system, mobile terminal |
US20110225301A1 (en) * | 2008-11-26 | 2011-09-15 | Takahiro Nobukiyo | Method of allocation of resource, communications system, base station, and program |
WO2012049804A1 (ja) * | 2010-10-12 | 2012-04-19 | パナソニック株式会社 | 通信装置及び通信方法 |
JP5831458B2 (ja) * | 2010-11-18 | 2015-12-09 | 富士通株式会社 | 基地局装置、通信システム及び通信方法 |
KR101709352B1 (ko) * | 2010-12-30 | 2017-02-22 | 에릭슨 엘지 주식회사 | 핸드오버 성능 향상을 위한 무선자원 할당 장치 및 그를 위한 기지국장치 |
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KR101191220B1 (ko) * | 2011-10-27 | 2012-10-15 | 엘지전자 주식회사 | 지속적 스케줄링 변경 정보를 전송 및 수신하는 방법 및 이를 위한 장치 |
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2007
- 2007-06-19 CN CN2007800225018A patent/CN101473689B/zh not_active Expired - Fee Related
- 2007-06-19 WO PCT/JP2007/062353 patent/WO2007148706A1/ja active Application Filing
- 2007-06-19 KR KR1020087030661A patent/KR20090019840A/ko not_active Application Discontinuation
- 2007-06-19 AU AU2007262023A patent/AU2007262023A1/en not_active Abandoned
- 2007-06-19 BR BRPI0713285-9A patent/BRPI0713285A2/pt not_active IP Right Cessation
- 2007-06-19 US US12/305,340 patent/US20090190540A1/en not_active Abandoned
- 2007-06-19 RU RU2009100412/09A patent/RU2009100412A/ru not_active Application Discontinuation
- 2007-06-19 JP JP2008522482A patent/JP5184352B2/ja not_active Expired - Fee Related
- 2007-06-19 EP EP07767209A patent/EP2037695A4/en not_active Withdrawn
- 2007-06-20 TW TW096122088A patent/TW200812326A/zh unknown
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Also Published As
Publication number | Publication date |
---|---|
AU2007262023A1 (en) | 2007-12-27 |
EP2037695A1 (en) | 2009-03-18 |
BRPI0713285A2 (pt) | 2012-03-06 |
TW200812326A (en) | 2008-03-01 |
CN101473689A (zh) | 2009-07-01 |
RU2009100412A (ru) | 2010-07-27 |
EP2037695A4 (en) | 2013-02-06 |
CN101473689B (zh) | 2011-02-09 |
KR20090019840A (ko) | 2009-02-25 |
US20090190540A1 (en) | 2009-07-30 |
JPWO2007148706A1 (ja) | 2009-11-19 |
JP5184352B2 (ja) | 2013-04-17 |
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