WO2013137424A1 - Station mobile et station de base sans fil - Google Patents

Station mobile et station de base sans fil Download PDF

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Publication number
WO2013137424A1
WO2013137424A1 PCT/JP2013/057351 JP2013057351W WO2013137424A1 WO 2013137424 A1 WO2013137424 A1 WO 2013137424A1 JP 2013057351 W JP2013057351 W JP 2013057351W WO 2013137424 A1 WO2013137424 A1 WO 2013137424A1
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WO
WIPO (PCT)
Prior art keywords
mobile station
sib
base station
unit
reception
Prior art date
Application number
PCT/JP2013/057351
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English (en)
Japanese (ja)
Inventor
ウリ アンダルマワンティ ハプサリ
健一郎 青柳
アニール ウメシュ
高橋　秀明
Original Assignee
株式会社エヌ・ティ・ティ・ドコモ
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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 WO2013137424A1 publication Critical patent/WO2013137424A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to a mobile station and a radio base station.
  • the LTE (Long Term Evolution) method collects measurement results of predetermined radio quality in a real environment from a mobile station UE, thereby reducing the labor and cost of a driving test (Drive Test) performed by a communication carrier. (Minimization of Drive Tests, measurement running test) is defined.
  • the radio base station eNB obtains measurement results (RSRP: Reference Signal Received Power, RSRQ: Reference Signal Received Quality) and location information (Location Information) of the mobile station UE from the mobile station UE. be able to.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • Location Information Location Information
  • the existing MDT has a problem that information that can be acquired by the radio base station eNB is limited.
  • this invention is made
  • a first feature of the present invention is a mobile station, comprising: a receiving unit configured to receive broadcast information; a measuring unit configured to measure predetermined radio quality; and a radio base station
  • the gist includes a transmission unit configured to transmit a measurement report including a reception result of the broadcast information and a measurement result measured by the measurement unit.
  • a second feature of the present invention is a radio base station, a transmitter configured to repeatedly transmit an SIB, and a measurement including a reception result of the SIB and an SFN that has received the SIB from a mobile station Based on the receiving unit configured to receive the report, the SFN that started transmission of the SIB at the radio base station, and the SFN that received the SIB at the mobile station, the transmission at the mobile station And a calculation unit configured to calculate whether the received SIB is received.
  • a third feature of the present invention is a radio base station, a transmission unit configured to repeatedly transmit SIB, and a measurement report including a reception result of the SIB and a reception time of the SIB from a mobile station The SIB transmitted at the mobile station based on the reception start time of the SIB at the radio base station and the reception time of the SIB at the mobile station. And a calculation unit configured to calculate whether or not the message is received.
  • the present invention it is possible to provide a mobile station and a radio base station that can acquire a reception result of broadcast information in the mobile station UE in MDT.
  • FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • FIG. 2 is a functional block diagram of the mobile station according to the first embodiment of the present invention.
  • FIG. 3 is a diagram for explaining a method for receiving broadcast information in the mobile station according to the first embodiment of the present invention.
  • FIG. 4 is a diagram for explaining a method for receiving broadcast information in the mobile station according to the first embodiment of the present invention.
  • FIG. 5 is a diagram for explaining a broadcast information reception method in the mobile station according to the first embodiment of the present invention.
  • FIG. 6 is a diagram for explaining a method for receiving broadcast information in the mobile station according to the first embodiment of the present invention.
  • FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • FIG. 2 is a functional block diagram of the mobile station according to the first embodiment of the present invention.
  • FIG. 3 is a diagram for explaining a method for receiving broadcast information in the mobile station according to the
  • FIG. 7 is a diagram illustrating an example of a format of “UE Information Response” transmitted by the mobile station according to the first embodiment of the present invention.
  • FIG. 8 is a diagram illustrating an example of a format of “ReportConfigEUTRA” in “RRC Connection Reconfiguration” transmitted by the radio base station according to the first embodiment of the present invention.
  • FIG. 9 is a diagram illustrating an example of a format of “MeasResults” transmitted by the mobile station according to the first embodiment of the present invention.
  • FIG. 10 is a functional block diagram of the radio base station according to the first embodiment of the present invention.
  • FIG. 11 is a diagram for explaining a calculation method in the radio base station according to the first embodiment of the present invention.
  • FIG. 12 is a functional block diagram of a mobile station according to the first modification of the present invention.
  • Mobile communication system according to the first embodiment of the present invention A mobile communication system according to a first embodiment of the present invention will be described with reference to FIG. 1 to FIG.
  • the radio base station eNB is configured to transmit broadcast information via a BCCH (Broadcast Control Channel) in the subordinate cell # 1. Yes.
  • BCCH Broadcast Control Channel
  • the mobile station UE includes a receiving unit 11, a measuring unit 12, and a transmitting unit 13.
  • the receiving unit 11 is configured to receive various signals transmitted by the radio base station eNB.
  • the receiving unit 11 may be configured to receive “Measurement Configuration” instructing to measure the predetermined radio quality for MDT from the radio base station eNB.
  • the receiving unit 11 is configured to receive broadcast information transmitted by the radio base station eNB.
  • the receiving unit 11 is configured to receive and store (Log) MIB (Master Information Block) via BCCH transmitted on PBCH (Physical Broadcast Channel) and BCH (Broadcast Channel). ing.
  • Log Master Information Block
  • BCCH Physical Broadcast Channel
  • BCH Broadcast Channel
  • the MIB is configured to be repeatedly transmitted every 40 ms.
  • the MIB is configured to notify, as basic parameters, for example, system bandwidth, SFN (System Frame Number: system frame number), the number of transmission antennas (detected by Blind Decoding by the mobile station UE), and the like. .
  • the reception unit 11 performs soft composite reception on the MIB over a plurality of subframes (within 40 ms), so that even when the mobile station UE is at the cell edge, the reception unit 11 is constant due to time diversity gain.
  • the above reception quality can be obtained.
  • the receiving unit 11 may be configured to receive the MIB in each subframe alone. As a result, when the mobile station UE is in the vicinity of the radio base station eNB, the receiving unit 11 can receive the MIB in a short time.
  • the receiving unit 11 is configured to receive and store (Log) SIB (System Information Block) 1 to 12 via BCCH transmitted on PDSCH (Physical Downlink Shared Channel). .
  • Log System Information Block
  • SIB1 is configured to notify parameters such as cell selection and scheduling information.
  • the SIB2 is configured to notify common parameters for UEs located in the corresponding cell, for example, common radio parameters and regulation information.
  • the SIBs 3 to 8 are configured to notify parameters for intra-frequency / inter-frequency / inter-RAT Cell Reselection.
  • SIBs 10 to 12 are configured to notify parameters for receiving ETWS (Earthquake and Tsunami Warning System) and CMAS (Commercial Mobile Alert System).
  • ETWS Earthquake and Tsunami Warning System
  • CMAS Common Mobile Alert System
  • SIB1 is configured to be repeatedly transmitted every 80 ms
  • SI (System Information) -1 is configured to be repeatedly transmitted every 160 ms
  • SI-2 is configured to be repeatedly transmitted every 320 ms
  • SI-3 is configured to be repeatedly transmitted every 640 ms
  • SI-4 is configured to be repeatedly transmitted every 1280 ms. Has been.
  • SI-1 to SI-4 are configured to be mapped to any one of SIB2 to SIB12.
  • the SIBs 2 to 12 are configured to transmit SI-1 to SI-4 at a settable transmission interval (SI window).
  • the reception unit 11 performs soft combining reception on the SIB1 over a plurality of subframes (within 80 ms), so that even when the mobile station UE is at the cell edge, the time diversity gain A certain level of reception quality can be obtained.
  • the receiving unit 11 receives a paging signal (Paging), and receives instruction information and ETWS / CMAS for instructing to change broadcast information (MIB / SIB) to the paging signal.
  • Paging a paging signal
  • ETWS / CMAS Indication to instruct is included
  • SIB1 is received
  • SIBs 10 to 12 are received according to “SchedulingInfoList” in SIB1.
  • the receiving unit 11 receives the SIB1 and follows the “SchedulingInfoList” in the SIB1. , SIB10 to 12 are configured to be received.
  • the receiving unit 11 receives the SIB1 after receiving the paging signal, and the “ It is configured to receive SIB10 / 11 according to “SchedulingInfoList”.
  • the receiving unit 11 receives the SIB1 after receiving the paging signal, It is configured to receive SIB10 / 11 according to “SchedulingInfoList”.
  • the measurement unit 12 is configured to measure a predetermined radio quality for MDT in accordance with “Measurement Configuration” received by the reception unit 11.
  • the measurement unit 12 may be configured to acquire “Location Information” that is position information of the mobile station UE.
  • the transmission unit 13 is configured to transmit “Measurement Report” including a measurement result of the predetermined radio quality for MDT to the radio base station eNB.
  • the transmission unit 13 may be configured to include “Location Information” acquired by the measurement unit 12 in “Measurement Report”.
  • the transmission unit 13 may be configured to include the reception result of the broadcast information recorded by the reception unit 11 in the “Measurement Report”.
  • the transmission unit 13 may be configured to include the MIB reception result as the reception result of the broadcast information recorded by the reception unit 11 in the “Measurement Report”.
  • the transmission unit 13 may be configured to include the reception result of the SIB1 as the reception result of the broadcast information recorded by the reception unit 11 in the “Measurement Report”.
  • the transmission unit 13 may be configured to include the reception results of the SIBs 2 to 12 as the reception results of the broadcast information recorded by the reception unit 11 in “Measurement Report”.
  • the transmission unit 13 may be configured to include the reception result of the paging signal as the reception result of the broadcast information recorded by the reception unit 11 in the “Measurement Report”.
  • the transmission unit 13 may be configured to include the SFN that received the MIB or the reception time of the MIB in the “Measurement Report”.
  • the transmission unit 13 may be configured to include the SFN that has received the SIBs 1 to 12 or the reception times of the SIBs 1 to 12 in the “Measurement Report”.
  • the reception unit 11 receives “UE Information Request” from the radio base station eNB
  • the transmission unit 13 “ The reception result of the above-described broadcast information may be transmitted to the radio base station eNB by “BCCH Logging Result” or “Paging Logging Result” in “UE Information Response”.
  • the transmission unit 13 is configured to transmit the reception result of the above-described broadcast information to the radio base station eNB by “BCCH Logging Result” or “Paging Logging Result” in “Meas Result”. Also good.
  • the radio base station eNB includes a transmission unit 21, a reception unit 22, and a calculation unit 23.
  • the transmission unit 21 is configured to transmit the broadcast information described above in the cell # 1 under the radio base station eNB.
  • the transmission unit 21 is configured to transmit “Measurement Configuration” including “ReportConfigEUTRA” illustrated in FIG. 8 to the mobile station UE.
  • the receiving unit 22 is configured to receive various signals transmitted by the mobile station UE.
  • the receiving unit 22 may be configured to receive “Measurement Report” including the reception result of the broadcast information and the measurement result of the predetermined radio quality from the mobile station UE.
  • the receiving unit 22 receives the above-described broadcast information reception result and broadcast information from the “BCCH Logging Result” and “Paging Logging Result” in the “UE Information Response” shown in FIG. (Reception time) may be acquired.
  • the reception unit 22 acquires the reception result of the broadcast information and the SFN (or the reception time of the broadcast information) received from the broadcast information from the “BCCH Logging Result” and the “Paging Logging Result” in the “Meas Result” illustrated in FIG. It may be configured to.
  • the reception unit 22 when the reception unit 22 acquires the reception result indicating that the reception of SIB1 is successful, even if the reception result of SIB2 to 12 cannot be acquired, the reception unit 22 considers that the reception of SIB2 to 12 is successful. It may be configured.
  • the calculation unit 23 Based on the SFN that started transmission of MIB / SIB in the radio base station eNB and the SFN that received MIB / SIB in the mobile station UE, the calculation unit 23 received the SIB transmitted in the mobile station UE It is comprised so that it may calculate about.
  • the radio base station eNB based on the MIB / SIB transmission start time in the radio base station eNB and the MIB / SIB reception time in the mobile station UE, it is configured to calculate how many times the SIB transmitted in the mobile station UE has been received. Has been.
  • the calculation unit 23 receives the SIB transmitted at the mobile station UE based on SFN # x and SFN # y. You may be comprised so that it may calculate about whether it did.
  • the calculation unit 23 is based on the SIB transmission start time n in the radio base station eNB and the SIB reception time p in the mobile station UE.
  • the mobile station UE may be configured to calculate the number of times the SIB transmitted at the mobile station UE has been received.
  • the radio base station eNB since the radio base station eNB can acquire the reception result of the broadcast information from the mobile station UE that is the target of MDT, the radio base station eNB can know the coverage status of the broadcast information.
  • the mobile station UE includes an RRC (Radio Resource Control) layer function 31 and an application layer function 32.
  • RRC Radio Resource Control
  • the RRC layer function 31 is configured to play a role as an LTE RRC layer
  • the application layer function 32 can execute an application installed (installed) in the mobile station UE. It is configured as follows.
  • the RRC layer function 31 includes the receiving unit 11, the measuring unit 12, and the transmitting unit 13 shown in FIG.
  • the application layer function 32 provides the RRC layer function 31 with a content to be reported as a measurement report to the radio base station eNB, for example, the above-described “BCCH Logging Result”, “Paging Logging Result”, “Location Information”, and the like. Configured to direct.
  • the application layer function 32 may be configured to instruct the RRC layer function 31 about contents to be acquired and contents to be measured.
  • the RRC layer function 31 reports the acquired contents and the measured contents to the application layer function 32, and the application function 32 determines the contents to be reported as a measurement report to the radio base station eNB.
  • the RRC layer function 31 may be instructed.
  • the communication between the RRC layer function 31 and the application layer function 32 may be configured to be performed via an API (Application Interface).
  • API Application Interface
  • the transmission unit 13 is configured to transmit a measurement report to the radio base station eNB in response to an instruction from the application layer function 32.
  • the receiving unit 11 may be configured to acquire predetermined information from the radio base station eNB in response to an instruction from the application layer function 32.
  • the measurement unit 12 may be configured to measure predetermined information in response to an instruction from the application layer function 32.
  • the first feature of the present embodiment is a mobile station UE, a receiving unit 11 configured to receive broadcast information, a measuring unit 12 configured to measure a predetermined radio quality, A transmission unit 13 configured to transmit a “Measurement Report” including a reception result of broadcast information and a measurement result measured by the measurement unit 12 to the radio base station eNB. Is the gist.
  • the transmission unit 13 may be configured to include the MIB reception result in the “Measurement Report” as the broadcast information reception result.
  • the transmission unit 13 may be configured to include the SIB reception result in “Measurement Report” as the reception result of the broadcast information.
  • the transmission unit 13 may be configured to include the SFN that has received the SIB in the “Measurement Report”.
  • the transmission unit 13 may be configured to include the SIB reception time in the “Measurement Report”.
  • an RRC layer function 31 and an application layer function 32 are provided.
  • the RRC layer function 31 includes a receiving unit 11, a measuring unit 12, and a transmitting unit 13, and an app.
  • the application layer function 32 is configured to instruct the RRC layer function 31 to report the content to be reported as a measurement report to the radio base station eNB. You may be comprised so that a measurement report may be transmitted with respect to the base station eNB.
  • the second feature of the present embodiment is the radio base station eNB, which is configured to repeatedly transmit SIBs, and from the mobile station UE, SIB reception results and SFNs that have received SIBs.
  • the mobile station UE based on the receiving unit 22 configured to receive the “Measurement Report” including the SFN that started transmission of the SIB in the radio base station eNB and the SFN that received the SIB in the mobile station UE
  • the gist of the present invention is to include a calculation unit 23 configured to calculate whether the SIB transmitted for the second time has been received.
  • the third feature of the present embodiment is the radio base station eNB, which includes the SIB reception result and the SIB reception time from the transmission unit 21 configured to repeatedly transmit the SIB and the mobile station UE.
  • the transmission is performed at the mobile station UE.
  • a calculation unit 23 configured to calculate whether the received SIB has been received.
  • the operations of the mobile station UE and the radio base station eNB 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 an arbitrary format storage medium such as a CD-ROM.
  • the 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 mobile station UE or the radio base station eNB. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE or the radio base station eNB.

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

Abstract

La présente invention se rapporte à une station mobile (UE) qui est dotée : d'une unité de réception (11) conçue pour recevoir des informations de notification ; d'une unité de mesure (12) destinée à mesurer une qualité de liaison sans fil prédéfinie ; et d'une unité d'émission (13) servant à émettre, à destination d'une station de base sans fil (eNB), un « compte rendu de mesure » qui comprend un résultat de réception des informations de notification et un résultat de mesure obtenu par ladite unité de mesure (12).
PCT/JP2013/057351 2012-03-16 2013-03-15 Station mobile et station de base sans fil WO2013137424A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012060537 2012-03-16
JP2012-060537 2012-03-16

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WO2013137424A1 true WO2013137424A1 (fr) 2013-09-19

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PCT/JP2013/057351 WO2013137424A1 (fr) 2012-03-16 2013-03-15 Station mobile et station de base sans fil

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JP (1) JPWO2013137424A1 (fr)
WO (1) WO2013137424A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016116241A (ja) * 2013-10-04 2016-06-23 創新音▲速▼股▲ふん▼有限公司 無線通信システムにおけるＤ２Ｄ（Ｄｅｖｉｃｅ−Ｔｏ−Ｄｅｖｉｃｅ）ディスカバリーをサポートする方法と装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
QUALCOMM EUROPE: "Connected mode mobility for HeNBs using information in the MIB", 3GPP TSG- RAN WG2 #66BIS R2-093749, 29 June 2009 (2009-06-29) *
VODAFONE: "Minimising Service Interruption Time to Acquire Relevant System Information for Inbound Handover to CSG cels in LTE", 3GPP TSG RAN WG2#66 R2-092896, 4 May 2009 (2009-05-04) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016116241A (ja) * 2013-10-04 2016-06-23 創新音▲速▼股▲ふん▼有限公司 無線通信システムにおけるＤ２Ｄ（Ｄｅｖｉｃｅ−Ｔｏ−Ｄｅｖｉｃｅ）ディスカバリーをサポートする方法と装置

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