WO2011083863A1 - 移動通信方法、無線基地局及び移動局 - Google Patents

移動通信方法、無線基地局及び移動局 Download PDF

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Publication number
WO2011083863A1
WO2011083863A1 PCT/JP2011/050213 JP2011050213W WO2011083863A1 WO 2011083863 A1 WO2011083863 A1 WO 2011083863A1 JP 2011050213 W JP2011050213 W JP 2011050213W WO 2011083863 A1 WO2011083863 A1 WO 2011083863A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile station
base station
radio base
timing adjustment
transmission timing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2011/050213
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
幹生 岩村
アニール ウメシュ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to BR112012016815A priority Critical patent/BR112012016815A2/pt
Priority to US13/520,943 priority patent/US8923200B2/en
Priority to CA2787776A priority patent/CA2787776C/en
Priority to CN201180005637.4A priority patent/CN102714853B/zh
Priority to MX2012007931A priority patent/MX2012007931A/es
Priority to ES11731861.8T priority patent/ES2585392T3/es
Priority to EP11731861.8A priority patent/EP2523511B1/en
Publication of WO2011083863A1 publication Critical patent/WO2011083863A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers

Definitions

  • the present invention relates to a mobile communication method, a radio base station, and a mobile station.
  • the mobile station UE is configured to transmit an uplink signal to the radio base station eNB using a plurality of “Component Carriers (CC)” having different carrier frequencies when performing CA.
  • CC Component Carriers
  • the mobile station UE performs CA using “Component Carrier (for example, CC # 1 and CC # 11)” in cells (for example, cell # 1 and cell # 11) having different coverages.
  • CA using “CC # 2)” there is a problem in that the reception timing of the uplink signal in the radio base station eNB may be greatly shifted for each “Component Carrier”.
  • An object is to provide a communication method, a radio base station, and a mobile station.
  • a first feature of the present invention is a mobile communication method in which a mobile station transmits an uplink signal to a radio base station using a plurality of carriers having different carrier frequencies, wherein the radio base station Step A of transmitting transmission timing adjustment information applied to the plurality of carriers to the station, and transmission of uplink signals on the plurality of carriers based on the transmission timing adjustment information received by the mobile station And a process B for adjusting the timing.
  • a radio base station configured to receive uplink signals transmitted from a mobile station using a plurality of carriers having different carrier frequencies.
  • the gist of the present invention is to provide a transmission unit configured to transmit transmission timing adjustment information applied to the plurality of carriers.
  • a third feature of the present invention is a mobile station configured to transmit an uplink signal to a radio base station using a plurality of carriers having different carrier frequencies, from the radio base station, Based on the reception unit configured to receive transmission timing adjustment information applied to a plurality of carriers and the received transmission timing adjustment information, to adjust the transmission timing of uplink signals in the plurality of carriers And a transmitter configured as described above.
  • the mobile communication method, the radio base station, and the radio base station can keep the uplink signal reception timing in the radio base station eNB within a certain range. And mobile stations can be provided.
  • FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • FIG. 3 is a functional block diagram of a radio base station according to the first embodiment of the present invention.
  • FIG. 3 is a functional block diagram of a mobile station according to the first embodiment of the present invention. It is a figure for demonstrating the transmission timing of the uplink signal by the mobile station which concerns on the 1st Embodiment of this invention.
  • the mobile communication system according to the present embodiment is an LTE-Advanced mobile communication system, and is configured to enable CA by the mobile station UE.
  • the mobile communication system according to the present embodiment may have a configuration as shown in FIG. 1, a configuration as shown in FIG. 2, or other configurations.
  • cell # 1, cell # 2, cell # 3, and the like are provided as macro cells under the radio base station eNB, and cell # 11, cell # 12, and cell # 21 are provided as overhanging cells. And cell # 31, cell # 32, and the like are provided.
  • the cell # 11 and the cell # 12 are provided in the coverage of the cell # 1
  • the cell # 21 is provided in the coverage of the cell # 2
  • the cell # 31 and the cell # 32 are It is provided in the coverage of cell # 3.
  • CC (Component Carrier) # 1 is used, in cell # 2, CC # 2 is used, in cell # 3, CC # 3 is used, and cell # 11, CC # 11 is used, cell # 12 uses CC # 12, cell # 21 uses CC # 21, and cell # 31 uses CC # 31.
  • cell # 32 CC # 32 is used.
  • CC # 1, CC # 2, and CC # 3 are “Component Carriers” having a carrier frequency in the 2 GHz band
  • CC # 11, CC # 12, CC # 21, CC # 31, and CC # 32 are It may be a “Component Carrier” having a carrier frequency in the 3.5 GHz band.
  • the bandwidth of “Component Carrier” may be 6 RB (Resource Block), 15 RB, 25 RB, 50 RB, 75 RB, or 100 RB. 1 RB is 180 kHz.
  • cell # 1, cell # 2, etc. are provided as macro cells under the radio base station eNB.
  • CC # 1 is used, and in cell # 2, CC # 2 is used.
  • both CC # 1 and CC # 2 may be “Component Carriers” having a carrier frequency in the 2 GHz band (or 3.5 GHz band).
  • CC # 1 is a “Component Carrier” having a carrier frequency in the 2 GHz band (or 3.5 GHz band)
  • CC # 2 is a carrier frequency in the 3.5 GHz band (or 2 GHz band). It may be “Component Carrier”.
  • the cell # 1 is not provided with a repeater (that is, a booster), and the cell # 2 is provided with a repeater # 2.
  • the radio base station eNB includes a reception unit 11, a transmission unit 12, a TA management unit 13, and a CA control unit 14.
  • the receiving unit 11 is configured to receive an uplink data signal or an uplink control signal transmitted from a mobile station UE via a PUSCH (Physical Uplink Shared Channel) in a plurality of “Component Carriers” having different carrier frequencies. .
  • PUSCH Physical Uplink Shared Channel
  • the CA control unit 14 is configured to manage whether or not each mobile station UE is performing CA.
  • the TA management unit 13 is configured to assign and manage a TA (Timing Advanced, transmission timing adjustment information) to be applied to each CC used in each mobile station UE performing CA. .
  • the TA management unit 13 performs the “Component Carrier” processed by the same receiver (IFFT: Inverse Fast Fourier Transform) in each mobile station UE that performs CA.
  • IFFT Inverse Fast Fourier Transform
  • the same TA may be assigned.
  • the TA management unit 13 may be configured to allocate only one TA to the mobile station UE performing only “continuous CA”.
  • “continuous CA” is a CA processed by one receiver (IFFT).
  • the TA management unit 13 may be configured to assign different TAs to a plurality of “Component Carriers” processed by different receivers (IFFTs) in each mobile station UE performing CA. Good.
  • IFFTs receivers
  • non-continuous CA is a CA that is processed by a plurality of receivers (IFFT).
  • the transmission unit 12 is configured to transmit a TA assigned to each of a plurality of “Component Carriers” to the mobile station UE performing CA.
  • the transmission unit 12 is configured to transmit the above-described TA to the mobile station UE performing CA by “CE (Control Element)” in the “MAC (Media Access Control) layer”. Also good.
  • the transmission unit 12 may be configured to transmit the above-described TA to the mobile station UE performing CA via an “anchor carrier”.
  • the anchor carrier may be defined as a carrier in which a PDCCH (Physical Downlink Control Channel) signal is transmitted among a plurality of “Component Carriers”, or a PHICH (Physical HARQ Indicator Channel) signal is transmitted.
  • a PDCCH Physical Downlink Control Channel
  • PHICH Physical HARQ Indicator Channel
  • Uplink data signal may be defined as a carrier on which a PHICH signal is transmitted, or a carrier on which a paging signal is transmitted.
  • DCCH Dedicated Control Channel
  • measured may be defined as the carrier (Measurement) is performed.
  • the definition of an anchor carrier may be defined by the combination of the definition mentioned above.
  • DCCH signal may include “Measurement Report (measurement report)”, “Handover Command (handover instruction signal)”, and “Handover Complete (handover completion signal)”.
  • anchor carrier may be called a “main carrier”.
  • the transmission part 12 may be comprised so that above-mentioned TA may be transmitted to the mobile station UE which is performing CA via arbitrary carriers other than an anchor carrier.
  • the transmission unit 12 may be configured to designate a carrier for transmitting the above-described TA by an individual control signal or a notification signal.
  • the mobile station UE includes a TA receiver 21 and a transmitter 22.
  • the TA receiving unit 21 is configured to receive a TA applied to each of a plurality of “Component Carriers” from the radio base station eNB.
  • the TA receiving unit 21 may be configured to extract the above-described TA from “Control Element” indicating “TA Command” in the received “MAC layer”.
  • the TA receiving unit 21 may be configured to receive the above-described TA via an anchor carrier.
  • the transmission unit 22 is configured to transmit an uplink data signal or an uplink control signal to the radio base station eNB via a PUSCH or a PUCCH in a plurality of “Component Carriers” having different carrier frequencies.
  • the transmission unit 22 is configured to adjust the transmission timing of the uplink signal in each of the plurality of “Component Carriers” based on the TA received by the TA reception unit 21.
  • the transmission unit 22 may adjust the transmission timing of the uplink signal in each of a plurality of “Component Carriers” processed by the same receiver (IFFT) in the mobile station UE to be the same.
  • the transmission unit 22 may adjust the transmission timing of the uplink signal in each of the plurality of “Component Carriers” to be the same.
  • the transmission unit 22 may separately adjust the transmission timing of the uplink signal in each of a plurality of “Component Carriers” processed by different receivers (IFFTs) in the mobile station UE.
  • IFFTs receivers
  • the transmission unit 22 may separately adjust the transmission timing of the uplink signal in each of the plurality of “Component Carriers”.
  • the transmission unit 22 is configured to transmit an uplink signal at a time point earlier than the reference time point T in each subframe by a time specified by TA.
  • the radio base station eNB can set a group of “Component Carrier”, which is regarded as “continuous CA”, for the mobile station UE.
  • An identification number can be assigned to each group, and a different TA can be designated for each group based on the identification number.
  • the same TA may be applicable depending on the operation mode.
  • the radio base station eNB sets a group of “Component Carrier” to which the same TA should be applied to the mobile station UE, assigns an identification number to each such group, and varies depending on the group based on the identification number. TA can be specified.
  • the TA receiving unit 21 is configured to extract the above-described TA and the identification number of the group to which the TA should be applied from the “Control Element” indicating the “TA Command” in the received “MAC layer”. May be.
  • the CA is performed. Even so, the reception timing of the uplink signal in the radio base station eNB can be kept within a certain range.
  • only one TA is allocated to the mobile station UE performing only “continuous CA”, thereby transmitting a surplus TA. Can be avoided.
  • the “component carrier” to which the same TA can be applied is grouped, and by assigning only one TA to the group, an excess TA can be assigned. Transmission can be avoided.
  • the first feature of the present embodiment is that the mobile station UE performing CA performs a plurality of “Component Carriers (for example, CC # 1 / CC # 2 / CC #) with different carrier frequencies from the radio base station eNB. 3 / CC # 11 / CC # 12 / CC # 21 / CC # 31 / CC # 32, etc.) ", in which the radio base station eNB transmits the uplink signal to the mobile station UE.
  • Component Carriers for example, CC # 1 / CC # 2 / CC #
  • TA transmission timing adjustment information
  • the radio base station eNB assigns the same TA to a plurality of “Component Carriers” processed by the same receiver (IFFT) in the mobile station UE. You may send it.
  • IFFT the same receiver
  • the radio base station eNB transmits different TAs to a plurality of “Component Carriers” processed by different receivers (IFFTs) in the mobile station UE. May be.
  • the radio base station eNB transmits the identification information of the “Component Carrier” group to which the same TA is applied and the same TA to the mobile station UE. May be.
  • a second feature of the present embodiment is a radio base station eNB configured to receive an uplink transmitted from a mobile station UE using a plurality of “Component Carriers” having different carrier frequencies,
  • the gist of the invention is that the station UE includes a transmission unit 12 configured to transmit TAs applied to a plurality of “Component Carriers”.
  • the transmission unit 12 is configured to transmit the same TA to a plurality of “Component Carriers” processed by the same receiver in the mobile station UE. Also good.
  • the transmission unit 12 may be configured to transmit different TAs to a plurality of “Component Carriers” processed by different receivers in the mobile station UE. .
  • the transmission unit 12 is configured to transmit, to the mobile station UE, the identification information of the group of “Component Carrier” to which the same TA is applied and the same TA. It may be.
  • a third feature of the present embodiment is a mobile station UE configured to transmit uplink signals to a radio base station eNB using a plurality of “Component Carriers” having different carrier frequencies, Based on the TA receiving unit 21 configured to receive TAs applied to a plurality of “Component Carriers” from the base station eNB, and a plurality of “Component Carriers” based on the TAs received by the TA receiving unit 21. And a transmission unit 22 configured to adjust the transmission timing of the uplink signal in the above.
  • the TA receiver 21 is configured to receive the same TA for a plurality of “Component Carriers” processed by the same receiver in the mobile station UE. May be.
  • the TA receiver 21 may be configured to receive different TAs for a plurality of “Component Carriers” processed by different receivers in the mobile station UE. Good.
  • radio base station eNB and the mobile station UE described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. .
  • Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
  • Such a storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the radio base station eNB and the mobile station UE. Further, the storage medium and the processor may be provided in the radio base station eNB and the mobile station UE as discrete components.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/JP2011/050213 2010-01-08 2011-01-07 移動通信方法、無線基地局及び移動局 Ceased WO2011083863A1 (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BR112012016815A BR112012016815A2 (pt) 2010-01-08 2011-01-07 método de comunicação móvel, estação rádio base, e estação móvel
US13/520,943 US8923200B2 (en) 2010-01-08 2011-01-07 Mobile communication method, radio base station, and mobile station
CA2787776A CA2787776C (en) 2010-01-08 2011-01-07 Mobile communication method, radio base station, and mobile station
CN201180005637.4A CN102714853B (zh) 2010-01-08 2011-01-07 移动通信方法、无线基站以及移动台
MX2012007931A MX2012007931A (es) 2010-01-08 2011-01-07 Metodo de comunicacion movil, estacion de base de radio, y estacion movil.
ES11731861.8T ES2585392T3 (es) 2010-01-08 2011-01-07 Procedimiento de comunicación móvil, estación base de radio y estación móvil
EP11731861.8A EP2523511B1 (en) 2010-01-08 2011-01-07 Mobile communication method, radio base station and mobile station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-003376 2010-01-08
JP2010003376A JP5156765B2 (ja) 2010-01-08 2010-01-08 移動通信方法、無線基地局及び移動局

Publications (1)

Publication Number Publication Date
WO2011083863A1 true WO2011083863A1 (ja) 2011-07-14

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PCT/JP2011/050213 Ceased WO2011083863A1 (ja) 2010-01-08 2011-01-07 移動通信方法、無線基地局及び移動局

Country Status (10)

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US (1) US8923200B2 (https=)
EP (1) EP2523511B1 (https=)
JP (1) JP5156765B2 (https=)
KR (1) KR20120104303A (https=)
CN (1) CN102714853B (https=)
BR (1) BR112012016815A2 (https=)
CA (1) CA2787776C (https=)
ES (1) ES2585392T3 (https=)
MX (1) MX2012007931A (https=)
WO (1) WO2011083863A1 (https=)

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CN104247528A (zh) * 2012-04-20 2014-12-24 株式会社Ntt都科摩 移动台
JP2016029843A (ja) * 2015-10-28 2016-03-03 株式会社Ｎｔｔドコモ 無線通信システム、ユーザ端末及び無線通信方法

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WO2013069746A1 (ja) * 2011-11-09 2013-05-16 株式会社エヌ・ティ・ティ・ドコモ 無線通信システム、ユーザ端末及び無線通信方法
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JP2016029843A (ja) * 2015-10-28 2016-03-03 株式会社Ｎｔｔドコモ 無線通信システム、ユーザ端末及び無線通信方法

Also Published As

Publication number Publication date
CN102714853A (zh) 2012-10-03
KR20120104303A (ko) 2012-09-20
ES2585392T3 (es) 2016-10-05
CN102714853B (zh) 2016-04-27
EP2523511A4 (en) 2015-05-27
BR112012016815A2 (pt) 2016-04-19
CA2787776C (en) 2015-09-15
JP2011142594A (ja) 2011-07-21
CA2787776A1 (en) 2011-07-14
JP5156765B2 (ja) 2013-03-06
EP2523511B1 (en) 2016-05-25
US8923200B2 (en) 2014-12-30
US20130003657A1 (en) 2013-01-03
MX2012007931A (es) 2012-08-15
EP2523511A1 (en) 2012-11-14

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