WO2014050393A1 - Station de base radio et équipement utilisateur - Google Patents

Station de base radio et équipement utilisateur Download PDF

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Publication number
WO2014050393A1
WO2014050393A1 PCT/JP2013/072647 JP2013072647W WO2014050393A1 WO 2014050393 A1 WO2014050393 A1 WO 2014050393A1 JP 2013072647 W JP2013072647 W JP 2013072647W WO 2014050393 A1 WO2014050393 A1 WO 2014050393A1
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WO
WIPO (PCT)
Prior art keywords
transmission
uplink transmission
mobile station
instruct
uplink
Prior art date
Application number
PCT/JP2013/072647
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English (en)
Japanese (ja)
Inventor
徹 内野
耕平 清嶋
Original Assignee
株式会社エヌ・ティ・ティ・ドコモ
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 株式会社エヌ・ティ・ティ・ドコモ filed Critical 株式会社エヌ・ティ・ティ・ドコモ
Publication of WO2014050393A1 publication Critical patent/WO2014050393A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a radio base station and a mobile station.
  • the mobile station UE in the “RRC_Connected state” can be controlled to transition to the DRX (Discontinuous Reception) state for the purpose of battery saving of the mobile station UE. It is prescribed.
  • the mobile station UE in the DRX state is configured to transition between the Active state and the Inactive state.
  • the mobile station UE in the active state monitors the PDCCH (physical downlink control channel) and provides feedback information to the radio base station eNB, for example, CQI (Channel Quality Indicator), PMI (Precoding Matrix Index), It is configured to report RI (Rank Indicator), PTI (Precoding Type Indicator), and the like.
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Index
  • RI Rank Indicator
  • PTI Precoding Type Indicator
  • the mobile station UE in the inactive state is configured not to monitor the PDCCH and report the feedback information to the radio base station eNB, battery saving of the mobile station UE can be realized.
  • the mobile station UE is in the Active state, and in other cases, the mobile station UE is in the Inactive state.
  • the radio base station eNB stops transmission of a TA (Timing Advance) command, and when the “TA timer” expires, the mobile station UE releases the uplink dedicated resource.
  • TA Timing Advance
  • the mobile station UE is configured to restart the “TA timer” every time it receives a TA command.
  • RRC Radio Resource Control
  • a first feature of the present invention is a radio base station, which uses a control element in a MAC layer for a mobile station performing carrier aggregation using a plurality of component carriers, and uplinks in each component carrier
  • the gist of the present invention is to provide a transmitter configured to be able to notify instruction information for instructing to stop the transmission of the transmission.
  • a second feature of the present invention is a mobile station configured to be able to perform carrier aggregation using a plurality of component carriers, and in each component carrier according to a control element in the received MAC layer.
  • the gist is to provide a control unit configured to be able to stop uplink transmission.
  • the mobile communication system according to the present embodiment is an LTE-Advanced mobile communication system.
  • the mobile communication system is configured such that CA (Carrier Aggregation) can be performed between the mobile station UE and the radio base station eNB using a plurality of CC (Component Carrier).
  • CA Carrier Aggregation
  • CC Component Carrier
  • the radio base station eNB is configured to be able to set the mobile station UE to transition to the DRX state using RRC signaling.
  • the radio base station eNB includes a control unit 11 and a transmission unit 12.
  • the control unit 11 is configured to perform various controls in the radio base station eNB.
  • the control unit 11 is configured to perform control related to CA performed with the mobile station UE, control related to the mobile station UE in the DRX state, and the like.
  • the transmission unit 12 is configured to transmit various signals to the mobile station UE.
  • the transmission unit 12 is configured to transmit RRC signaling, MAC-CE (Media Access Control-Control Element), and the like to the mobile station UE.
  • RRC signaling RRC signaling
  • MAC-CE Media Access Control-Control Element
  • the transmission unit 12 is configured to be able to instruct the mobile station UE performing CA to stop uplink transmission in each CC using MAC-CE. .
  • CC can be classified into PCC (Primary Component Carrier) and SCC (Secondary Component Carrier).
  • each CC is used for each mobile station UE that is performing CA and configured to transition to the DRX state, or for each mobile station UE that is performing CA and is in the DRX state. It may be configured to be able to instruct to stop uplink transmission in.
  • the transmission unit 12 may be configured to give the above-described instruction for each CC using the MAC-CE shown in FIG.
  • the transmission unit 12 is configured to instruct to stop uplink transmission or to instruct to start (resume) uplink transmission using the MAC-CE described above. Also good.
  • the transmission unit 12 is configured to instruct to change the transmission state in the uplink using the MAC-CE described above or to instruct to maintain the current transmission state in the uplink. May be.
  • the transmission unit 12 may be configured to instruct whether or not to expire the “TA timer” using the above-described MAC-CE.
  • the transmission unit 12 is instructed to perform uplink transmission in the CC or CC belonging to the CC group that has stopped uplink transmission, that is, by assigning PUSCH, or SRS (Sounding Reference Signal) or random It may be configured to instruct to resume uplink transmission in the CC by triggering transmission of the access preamble.
  • PUSCH Physical Uplink Shared Access
  • SRS Sounding Reference Signal
  • the mobile station UE includes a receiving unit 21 and a control unit 22.
  • the receiving unit 21 is configured to receive various signals from the radio base station eNB.
  • the receiving unit 21 is configured to receive RRC signaling, MAC-CE, and the like from the radio base station eNB.
  • control unit 22 is configured to stop transmission of an uplink signal in a CC identified by “Ci” in which “1” is set in the MAC-CE received by the reception unit 21.
  • control unit 22 is instructed to perform uplink transmission in the CC in which uplink transmission is stopped, that is, when PUSCH is allocated via the PDCCH, or SRS transmission or random access preamble transmission. May be configured to resume uplink transmission in such CC.
  • control unit 22 may be configured to resume uplink transmission in the CC when the TA command is received in the CC in which uplink transmission is stopped.
  • the first feature of the present embodiment is a radio base station eNB, which performs MAC-CE (MAC layer) on a mobile station UE that performs CA (carrier aggregation) using a plurality of CCs (component carriers). And a transmission unit configured to be able to instruct to stop uplink transmission in each CC.
  • MAC-CE MAC layer
  • CA carrier aggregation
  • the radio base station eNB is configured to be able to instruct the mobile station UE to stop uplink transmission in each CC using the newly defined MAC-CE. Therefore, it is possible to stop “CSI reporting” by the mobile station UE in the DRX state without wasting radio resources and with a small delay.
  • the transmission unit 12 may be configured to give the above instruction for each CC.
  • uplink transmission can be flexibly stopped for each CC.
  • the transmission unit 12 may be configured to give the above instruction for each CC group (component carrier group).
  • the transmission unit 12 uses the MAC-CE described above to instruct to stop uplink transmission or to instruct to start uplink transmission. It may be configured.
  • the transmission unit 12 uses the above-described MAC-CE to instruct to change the transmission state in the uplink, or to maintain the current transmission state in the uplink. It may be configured to instruct.
  • the transmission unit 12 instructs to stop the “TA timer (timing adjustment timer)” or starts the “TA timer” using the MAC-CE described above. It may be configured to instruct as follows.
  • the transmission unit 12 instructs to change the state of “TA timer” using the above-described MAC-CE, or maintains the current state of “TA timer”. It may be configured to instruct to do so.
  • the transmission unit 12 may be configured to instruct whether to stop or expire the “TA timer” using the above-described MAC-CE.
  • the transmission unit 12 assigns PUSCH (uplink data signal transmission resource) when an uplink transmission is instructed in a CC that has stopped uplink transmission. Or by triggering SRS transmission or random access preamble transmission, it may be configured to instruct to resume uplink transmission in the CC.
  • PUSCH uplink data signal transmission resource
  • the transmission unit 12 is configured to instruct to resume uplink transmission in a CC by transmitting a TA command in a CC that has stopped uplink transmission. May be.
  • each CC type main carrier, subcarrier
  • CC group including the main carrier or CC group not including the main carrier
  • Control may be instructed.
  • a second feature of the present embodiment is a mobile station UE configured to be able to perform CA using a plurality of CCs, and according to the received MAC-CE, uplink of each CC
  • the gist is to include a control unit 22 configured to stop transmission.
  • the DRX state can be achieved without wasting radio resources and with a small delay. "CSI reporting" in can be stopped.
  • control unit 22 may be configured to stop the above-described uplink transmission for each CC.
  • uplink transmission can be flexibly stopped for each CC.
  • control unit 22 may be configured to stop uplink transmission or start uplink transmission according to the above-described MAC-CE.
  • control unit 22 is configured to change the transmission state in the uplink or maintain the current transmission state in the uplink according to the above-described MAC-CE. May be.
  • control unit 22 may be configured to stop the “TA timer” or start the “TA timer” according to the MAC-CE described above.
  • control unit 22 is configured to change the state of the “TA timer” or maintain the current state of the “TA timer” according to the MAC-CE described above. May be.
  • control unit 22 may be configured to determine whether to stop or expire the “TA timer” according to the above-described MAC-CE.
  • control unit 22 is instructed to perform uplink transmission in the CC that stops uplink transmission, that is, when PUSCH is assigned, or SRS transmission or random access.
  • preamble transmission it may be configured to resume uplink transmission in the CC.
  • the control unit 22 when a TA command is received in a CC (or CC group) that stopped uplink transmission, the control unit 22 resumes uplink transmission in the CC. It may be configured.
  • the uplink transmission is simply described as being stopped. However, only specific uplink transmission may be stopped.
  • the uplink is stopped and resumed for all CCs belonging to the CC group to which the CC belongs. It may be done.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon la présente invention, afin de mettre en œuvre efficacement l'économie de pile d'un équipement utilisateur (UE) dans un état DRX, cet équipement utilisateur (UE) et cette station de base radio (eNB) sont pourvus d'une unité de transmission (12) configurée pour être apte à émettre une instruction pour arrêter une transmission de liaison montante dans chaque CC d'une pluralité de CC en utilisant un MAC-CE lorsque l'équipement utilisateur (UE) effectue CA en utilisant la pluralité de CC.
PCT/JP2013/072647 2012-09-28 2013-08-26 Station de base radio et équipement utilisateur WO2014050393A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-216300 2012-09-28
JP2012216300A JP2014072638A (ja) 2012-09-28 2012-09-28 無線基地局及び移動局

Publications (1)

Publication Number Publication Date
WO2014050393A1 true WO2014050393A1 (fr) 2014-04-03

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PCT/JP2013/072647 WO2014050393A1 (fr) 2012-09-28 2013-08-26 Station de base radio et équipement utilisateur

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JP (1) JP2014072638A (fr)
WO (1) WO2014050393A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108924853A (zh) * 2017-03-23 2018-11-30 中兴通讯股份有限公司 无线链路监测方法和用户设备
WO2019071480A1 (fr) * 2017-10-11 2019-04-18 北京小米移动软件有限公司 Procédé de commande de communication et dispositif de commande de communication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6220903B2 (ja) * 2015-01-26 2017-10-25 華碩電腦股▲ふん▼有限公司ＡＳＵＳＴｅＫ ＣＯＭＰＵＴＥＲ ＩＮＣ． 無線通信システムにおけるアップリンク送信を処理するための方法及び装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HUAWEI: "UL SCC (de)activation", 3GPP TSG-RAN WG2 MEETING #70 R2-103011, 14 May 2010 (2010-05-14) *
NOKIA SIEMENS NETWORKS ET AL.: "CSI/SRS transmission during DRX", 3GPP TSG-RAN WG2 MEETING #79 R2-123438, 17 August 2012 (2012-08-17) *
NTT DOCOMO, INC.: "Consideration on UL suspend MAC CE", 3GPP TSG-RAN WG2 #79BIS R2-124445, 12 October 2012 (2012-10-12) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108924853A (zh) * 2017-03-23 2018-11-30 中兴通讯股份有限公司 无线链路监测方法和用户设备
CN108924853B (zh) * 2017-03-23 2024-04-26 中兴通讯股份有限公司 无线链路监测方法和用户设备
WO2019071480A1 (fr) * 2017-10-11 2019-04-18 北京小米移动软件有限公司 Procédé de commande de communication et dispositif de commande de communication
US11317339B2 (en) 2017-10-11 2022-04-26 Beijing Xiaomi Mobile Software Co., Ltd. Communication control method and communication control device

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Publication number Publication date
JP2014072638A (ja) 2014-04-21

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