WO2011065456A1 - Procédé de communication mobile, station mobile et station de base sans fil - Google Patents

Procédé de communication mobile, station mobile et station de base sans fil Download PDF

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Publication number
WO2011065456A1
WO2011065456A1 PCT/JP2010/071081 JP2010071081W WO2011065456A1 WO 2011065456 A1 WO2011065456 A1 WO 2011065456A1 JP 2010071081 W JP2010071081 W JP 2010071081W WO 2011065456 A1 WO2011065456 A1 WO 2011065456A1
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WIPO (PCT)
Prior art keywords
base station
radio base
time difference
mobile station
signal
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PCT/JP2010/071081
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English (en)
Japanese (ja)
Inventor
美波 石井
ウリ アンダルマワンティ ハプサリ
貞行 安部田
忠 内山
匠吾 矢葺
義嗣 島津
清達 須藤
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株式会社エヌ・ティ・ティ・ドコモ
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Publication of WO2011065456A1 publication Critical patent/WO2011065456A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates to a mobile communication method, a mobile station, and a radio base station.
  • E-CID Enhanced Cell ID
  • the radio base station eNB uses “Equation 1” to obtain “Timing advance (T ADV ), which is round trip time information RTT (Round Trip Time) between the radio base station eNB and the mobile station UE. Is calculated.
  • T ADV round trip time information
  • T ADV (eNB Rx ⁇ Tx Time Difference) + (UE Rx ⁇ Tx Time Difference) (Equation 1)
  • eNB Rx-Tx Time Difference is radio base station time difference information (positive value) calculated by (reception time at radio base station eNB) ⁇ (transmission time at radio base station eNB), for example, , (Reception time of “RRC Measurement Report” at radio base station eNB) ⁇ (Radio base station time difference information calculated by “transmission time of“ RRC Connection Reconfiguration ”including“ Measurement Configuration ”” at radio base station eNB).
  • UE Rx-Tx Time Difference is mobile station time difference information (negative value) calculated by (reception time at mobile station UE) ⁇ (transmission time at mobile station UE). This is mobile station time difference information calculated based on the reception time of “RRC Connection Reconfiguration” including “Measurement Configuration” at the UE— (transmission time of “RRC Measurement Report” at the mobile station UE).
  • the radio base station eNB transmits “RRC Connection Configuration” including “Measurement Configuration” including instruction information for instructing measurement of “UE Rx-Tx Time Difference” to the mobile station UE.
  • the UE-AP Upon receiving this “RRC Connection Reconfiguration” at T3, the UE-AP generates “RRC Connection Reconfiguration Complete” at T4 and transmits it to the UE-HW.
  • the UE-HW When receiving the “RRC Connection Reconfiguration Complete” at T5, the UE-HW transmits “Scheduling Request” for transmitting “RRC Connection Reconfiguration Complete” to the radio base station eNB at T6.
  • the radio base station eNB When the radio base station eNB receives the “Scheduling Request” at T7, at T8, the radio base station eNB gives “UL Grant” for allocating radio resources for transmitting “RRC Connection Reconfiguration Complete” to the mobile station UE. Send.
  • the UE-HW When the UE-HW receives the “UL Grant” at T9, the UE-HW performs “RRC Connection Reconfiguration Complete” to the radio base station eNB using the radio resource allocated by the “UL Grant” at T10A. Send.
  • the radio base station eNB receives the “RRC Connection Reconfiguration Complete”.
  • the UE-HW notifies the UE-AP about the measurement result of “UE Rx-Tx Time Difference” which is the mobile station time difference information at T11, and the UE-AP receives the measurement result at T12.
  • the UE-AP In T13, the UE-AP generates “RRC Measurement Report” based on the received measurement result and transmits it to the UE-HW.
  • the UE-HW When the UE-HW receives the “RRC Measurement Report” at T14, the UE-HW transmits a “Scheduling Request” for transmitting the “RRC Measurement Report” at T15.
  • the radio base station eNB When receiving the “Scheduling Request” at T16, the radio base station eNB transmits “UL Grant” for allocating radio resources for transmitting “RRC Measurement Report” to the mobile station UE at T17. To do.
  • the UE-HW When the UE-HW receives the “UL Grant” at T18, the UE-HW transmits the “RRC Measurement Report” to the radio base station eNB using the radio resource allocated by the “UL Grant” at T19. To do.
  • the radio base station eNB receives the “RRC Measurement Report” at T20.
  • the radio base station eNB may accurately calculate “Timing advance (T ADV )”. There was a problem that it might not be possible.
  • the radio base station eNB when the radio base station eNB considers the measurement period of “eNB Rx-Tx Time Difference” as “T1 to T20”, the mobile station UE determines that “UE Rx-Tx Time When the measurement period of “Difference” is “T9 to T10”, the radio base station eNB cannot accurately calculate “Timing advance (T ADV )”.
  • the present invention has been made in view of the above-described problems, and a mobile communication method, a mobile station, and a radio base station that can accurately calculate “Timing advance (T ADV )” that is round-trip propagation time information.
  • the purpose is to provide.
  • a first feature of the present invention is a mobile communication method, in which a mobile station transmits a scheduling request signal for transmitting a predetermined signal to a radio base station, and the radio base station includes: Step B for transmitting an allocation signal for allocating a radio resource for transmitting the predetermined signal to the mobile station, and the mobile station using the radio resource allocated by the allocation signal, The step C of transmitting the predetermined signal to the radio base station, and the mobile station based on the instruction information received from the radio base station, the transmission time of the predetermined signal and the reception time of the allocation signal It is necessary to have a step D of calculating mobile station time difference information indicating a time difference, and a step E in which the mobile station transmits a measurement report signal including the mobile station time difference information to the radio base station. To.
  • a second feature of the present invention is a scheduling request signal transmitter configured to transmit a scheduling request signal for transmitting a predetermined signal to a radio base station, the mobile station, and the radio
  • a predetermined signal transmitter configured to transmit the predetermined signal to the radio base station using the radio resource allocated by the allocation signal received from the base station; and the radio signal received from the radio base station
  • a mobile station time difference information calculation unit configured to calculate a mobile station time difference information indicating a time difference between the transmission time of the predetermined signal and the reception time of the allocation signal
  • the gist is provided with a measurement report signal transmitter configured to transmit a measurement report signal including the mobile station time difference information.
  • a third feature of the present invention is a radio base station, which is an allocation signal for allocating radio resources for transmitting a predetermined signal to the mobile station according to a scheduling request signal received from the mobile station
  • An assigned signal transmitting unit configured to transmit the predetermined signal received by the mobile station using the radio resource
  • a predetermined signal receiving unit configured to receive the predetermined signal transmitted from the mobile station, Included in the measurement report signal transmitted by the mobile station, and a radio base station time difference information calculation unit configured to calculate a radio base station time difference information indicating a time difference between a transmission time and a reception time of the predetermined signal
  • Mobile station time difference information indicating a time difference between the transmission time of the predetermined signal and the reception time of the allocation signal
  • the wireless base station time difference information calculation unit calculated by the radio base station time difference information calculation unit Using linear base station time difference information, and summary by comprising a reciprocating propagation time information calculating unit configured to calculate a round-trip propagation time information between a radio base station and the mobile station.
  • FIG. 1 is a functional block diagram of a radio base station according to the 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 the operation of the mobile communication system according to the first embodiment of the present invention.
  • FIG. 4 is a diagram for explaining the operation of a conventional mobile communication system.
  • the radio base station eNB includes an application function 10 and a platform function 20.
  • the application function 10 includes an application message generation unit 11, a calculation unit 12, and a platform function interface 13.
  • the platform function 20 includes an application function interface 21, a transmission unit 22, a reception unit 23, a measurement unit 24, and a platform message generation unit 25.
  • the application message generator 11 is configured to generate a signal such as “RRC Connection Reconfiguration”.
  • the application message generation unit 11 is configured to generate instruction information for instructing calculation of “UE Rx-Tx Time Difference”.
  • the application message generator 11 is configured to transmit a signal such as “RRC Connection Reconfiguration” to the platform function 20 via the platform function interface 13.
  • the calculation unit 12 uses the “UE Rx-Tx Time Difference” and “eNB Rx-Tx Time Difference” included in the measurement report signal received via the platform function interface 13 to calculate “Timing advance”. It is configured.
  • the calculation unit 12 may be configured to receive and store “UE Rx-Tx Time Difference” and “SFN (System Frame Number)” via the platform function interface 13.
  • the “SFN” is a cell-specific counter value at the time when the measurement of “UE Rx-Tx Time Difference” is completed by the mobile station UE.
  • the calculation unit 12 may be configured to receive and store “eNB Rx-Tx Time Difference” and “SFN” via the platform function interface 13.
  • SFN is a cell-specific counter value at the time when measurement of “eNB Rx-Tx Time Difference” is completed by the radio base station eNB.
  • the calculation unit 12 is the same value or closest to “SFN” at the time when the measurement of the “UE Rx-Tx Time Difference” included in the measurement report signal and the measurement of the “UE Rx-Tx Time Difference” is completed.
  • “Timing advance” is calculated using “eNB Rx-Tx Time Difference” corresponding to “SFN” having a value.
  • the transmission unit 22 is configured to transmit signals such as “RRC Connection Reconfiguration” and “UL Grant” received via the application function interface 21 to the mobile station UE.
  • the receiving unit 23 is configured to receive signals such as “RRC Connection Reconfiguration Complete”, “Scheduling Request”, and “RRC Measurement Report” from the mobile station UE.
  • the receiving unit 23 is configured to transmit a signal such as “RRC Connection Reconfiguration Complete” or “RRC Measurement Report” to the application function 10 via the application function interface 21.
  • the measurement unit 24 calculates (measures) “eNB Rx-Tx Time Difference” indicating a time difference between the transmission time of “UL Grant” and the reception time of a predetermined signal (for example, RRC Connection Reconfiguration Complete, RRC Measurement Report, etc.). Is configured to do.
  • the measurement unit 24 may be configured to calculate “eNB Rx-Tx Time Difference” every time “UL Grant” is transmitted.
  • the measurement unit 24 is configured to measure “SFN” at the measurement end time of “eNB Rx-Tx Time Difference” every time “eNB Rx-Tx Time Difference” is calculated.
  • the measurement unit 24 is configured to transmit “eNB Rx-Tx Time Difference” and “SFN” to the application function 10 via the application function interface 21.
  • the measurement unit 24 may be configured to transmit “eNB Rx-Tx Time Difference” and “SFN” each time “eNB Rx-Tx Time Difference” is calculated, or at a predetermined timing.
  • a plurality of “eNB Rx-Tx Time Difference” and “SFN” may be transmitted together.
  • the platform message generator is configured to generate a signal such as “UL Grant”.
  • the mobile station UE includes a hardware function 30 and an application function 40.
  • the hardware function 30 includes a reception unit 31, a transmission unit 32, a measurement unit 33, an application function interface 34, and a hardware message generation unit 35.
  • the application function 40 includes an application message generation unit 41 and a hardware function interface 42.
  • the receiving unit 31 is configured to receive signals such as “RRC Connection Reconfiguration” and “UL Grant” from the radio base station eNB.
  • the reception unit 31 is configured to receive instruction information for instructing calculation of “UE Rx-Tx Time Difference” from the radio base station eNB.
  • the receiving unit 31 may be configured to receive such instruction information via “Measurement Configuration” included in “RRC Connection Reconfiguration”, or may receive a C-plane signal or a U-plane signal. It may be configured to receive such instruction information.
  • the receiving unit 31 is configured to transmit a signal such as “RRC Connection Reconfiguration” and the above-described instruction information to the application function 40 via the application function interface 34.
  • the transmission unit 32 transmits a “Scheduling Request” or the like to the radio base station eNB, or transmits a signal such as “RRC Connection Reconfiguration Complete” or “RRC Measurement Report” received via the application function interface 34. It is configured so that.
  • the measurement unit 33 calculates “UE Rx-Tx Time Difference” indicating a time difference between the transmission time of the predetermined signal and the reception time of “UL Grant”. It is configured.
  • the hardware message generation unit 35 is configured to generate “Scheduling Request” and the like to be transmitted to the radio base station eNB.
  • the application message generator 41 is configured to generate a signal such as “RRC Connection Reconfiguration Complete” or “RRC Measurement Report”.
  • the application message generation unit 41 is configured to transmit signals such as “RRC Connection Reconfiguration Complete” and “RRC Measurement Report” to the hardware function 30 via the hardware function interface 42. Yes.
  • the application function 10 (hereinafter, eNB-AP) of the radio base station eNB performs “Measurement Configuration” including instruction information for instructing calculation (measurement) of “UE Rx-Tx Time Difference”.
  • “RRC Connection Reconfiguration” including "is transmitted to the platform function 20 (hereinafter, eNB-PF) of the radio base station eNB.
  • the eNB-AP instructs the eNB-PF to set the transmission time of “UL Grant” (T9 in FIG. 3) as the time when the calculation of “eNB Rx-Tx Time Difference” is started. .
  • the eNB-PF When the eNB-PF receives the “RRC Connection Reconfiguration” at T2, the eNB-PF transmits the “RRC Connection Reconfiguration” to the mobile station UE.
  • the eNB-PF may notify the above-described instruction information to the mobile station UE by a signal other than “RRC Connection Reconfiguration”.
  • the UE-AP When receiving the “RRC Connection Reconfiguration” at T4, the UE-AP generates an “RRC Connection Reconfiguration Complete” at T5 and transmits it to the UE-HW.
  • the UE-AP determines the measurement period of “UE Rx-Tx Time Difference” for the UE-HW based on the above-described instruction information, a predetermined signal (for example, for example, after receiving “UL Grant”) It is instructed to be a period until “RRC Connection Reconfiguration Complete”) is transmitted. Note that the UE-AP may give such an instruction at a timing other than T5.
  • the UE-HW When receiving the “RRC Connection Reconfiguration Complete” at T6, the UE-HW transmits “Scheduling Request” for transmitting “RRC Connection Reconfiguration Complete” to the radio base station eNB at T7.
  • the eNB-PF When receiving the “Scheduling Request” at T8, the eNB-PF transmits “UL Grant” for allocating radio resources for transmitting “RRC Connection Reconfiguration Complete” to the mobile station UE at T9. To do.
  • the UE-HW When the UE-HW receives the “UL Grant” at T10, the UE-HW transmits the “RRC Connection Reconfiguration Complete” to the radio base station eNB using the radio resource allocated by the “UL Grant” at T11. Send.
  • the UE-HW measures the time difference between T10 and T11 as “UE Rx-Tx Time Difference”. Also, the UE-HW measures “SFN” in T11.
  • the eNB-PF When the eNB-PF receives the “RRC Connection Reconfiguration Complete” in T12, the eNB-PF transmits the “RRC Connection Reconfiguration Complete” to the eNB-AP.
  • the eNB-PF measures and stores the time difference between T9 and T12 as “eNB Rx-Tx Time Difference”, and measures and stores “SFN” at T12.
  • the eNB-AP receives the “RRC Connection Reconfiguration Complete”.
  • the UE-HW notifies the UE-AP of the measurement result of “UE Rx-Tx Time Difference” at T14, and “SFN” at the reception completion time of “UE Rx-Tx Time Difference”. Notice.
  • the UE-AP When the UE-AP receives “UE Rx-Tx Time Difference” and “SFN” at T15, the UE-AP performs “RRC Measurement” based on the received “UE Rx-Tx Time Difference” and “SFN” at T16. “Report” is generated and transmitted to the UE-HW.
  • the UE-HW When the UE-HW receives the “RRC Measurement Report” at T17, the UE-HW transmits a “Scheduling Request” for transmitting the “RRC Measurement Report” at T18.
  • the eNB-HW When receiving the “Scheduling Request” at T19, the eNB-HW transmits “UL Grant” for allocating a radio resource for transmitting “RRC Measurement Report” to the mobile station UE at T20. .
  • the UE-HW When the UE-HW receives the “UL Grant” in T21, the UE-HW transmits the “RRC Measurement Report” to the radio base station eNB using the radio resource allocated by the “UL Grant” in T22. To do.
  • the eNB-PF receives the “RRC Measurement Report” at T23.
  • the eNB-AP when receiving the “RRC Measurement Report” from the eNB-PF, stores “UE Rx-Tx Time Difference” and “SFN” included in the “RRC Measurement Report”.
  • the eNB-PF measures and stores the time difference between T20 and T23 as “eNB Rx-Tx Time Difference”, and measures and stores “SFN” at T23.
  • eNB-PF Since eNB-PF cannot identify the type of RRC message such as “RRC Connection Reconfiguration Complete” or “RRC Measurement Report”, as described above, it receives the RRC message after transmitting “UL Grant”. In this case, each time, “eNB Rx-Tx Time Difference” and “SFN” are measured and stored.
  • the eNB-AP transmits an inquiry signal of “eNB Rx-Tx Time Difference” to the eNB-PF.
  • the eNB-PF When receiving the inquiry signal at T26, the eNB-PF notifies the eNB-AP of all the stored “eNB Rx-Tx Time Difference” and “SFN” at T27.
  • the eNB-PF notifies “eNB Rx-Tx Time Difference” and “SFN” every time it measures “eNB Rx-Tx Time Difference” (in the example of FIG. 3, at T12 and T23). It may be configured, or may be configured to notify “eNB Rx-Tx Time Difference” and “SFN” at a predetermined cycle.
  • the eNB-AP selects “SFN” equal to or closest to “SFN” of the stored “UE Rx-Tx Time Difference” from among the plurality of received “eNB Rx-Tx Time Difference”. Select “eNB Rx-Tx Time Difference”.
  • the eNB-AP uses the stored “UE Rx-Tx Time Difference” and the selected “eNB Rx-Tx Time Difference”, and uses the above-described (Equation 1), “Timing advance (T ADV ) ”Is calculated.
  • T ADV Timing advance
  • the first feature of the present embodiment is a mobile communication method in which the mobile station UE transmits a “predetermined signal (for example, RRC Connection Reconfiguration Complete, RRC Measurement Report, etc.)” to the radio base station eNB. For transmitting “Scheduling Request (scheduling request signal)” and “UL Grant (allocation) for the radio base station eNB to allocate radio resources for transmitting a predetermined signal to the mobile station UE.
  • a predetermined signal for example, RRC Connection Reconfiguration Complete, RRC Measurement Report, etc.
  • the gist of the present invention is to have a step E of transmitting “RRC Measurement Report (measurement report signal)” including “UE Rx-Tx Time Difference” to the radio base station eNB.
  • the radio base station eNB sets “eNB Rx-Tx Time Difference (radio base station time difference information)” indicating a time difference between the transmission time of “UL Grant” and the reception time of a predetermined signal.
  • the calculation process F and the radio base station eNB uses “UE Rx-Tx Time Difference” and “eNB Rx-Tx Time Difference” to perform “Timing” in the uplink between the radio base station eNB and the mobile station UE. and a step G of calculating “advance (round-trip propagation time information)”.
  • the mobile station UE further includes an “RRC (counter value)” at a measurement completion time of “UE Rx-Tx Time Difference (mobile station time difference information)”.
  • the radio base station eNB uses “UE Rx-Tx Time Difference” and “eNB Rx-Tx Time Difference” corresponding to the SFN at the above measurement completion time. “Timing advance” may be calculated.
  • the radio base station eNB uses the “Measurement Configuration (measurement control information)” included in the “RRC Connection Reconfiguration (connection reconfiguration signal)” to the mobile station UE as described above. Instruction information may be transmitted.
  • the second feature of the present embodiment is the mobile station UE, which is configured to transmit a “Scheduling Request” for transmitting a predetermined signal to the radio base station eNB, and the radio base station eNB
  • the transmission unit 32 configured to transmit a predetermined signal to the radio base station eNB using the radio resource allocated by “UL Grant” received from the mobile station, and the instruction information received from the radio base station eNB
  • the measurement unit 33 configured to calculate “UE Rx-Tx Time Difference”, and the transmission unit 32 transmits “UE Rx-Tx Time Difference” to the radio base station eNB.
  • Is configured to send "RRC Measurement Report" containing The gist of the door.
  • the third feature of the present embodiment is a radio base station eNB, which allocates radio resources for transmitting a predetermined signal to the mobile station UE according to “Scheduling Request” received from the mobile station UE.
  • a transmission unit 22 configured to transmit “UL Grant” for receiving
  • a reception unit 23 configured to receive a predetermined signal transmitted by the mobile station UE using the radio resource
  • Calculated by the measurement unit 24 configured to calculate “eNB Rx-Tx Time Difference”, and “UE Rx-Tx Time Difference” included in “RRC Measurement Report” transmitted by the mobile station UE and the measurement unit 24 ENB Rx-Tx Time D Using fference ", and summarized in that comprises a calculation unit 12 configured to calculate the" Timing advance ".
  • the calculation unit 12 has “UE Rx-Tx Time Difference” and “UE Rx-Tx Time Difference” received from the mobile station UE corresponding to the SFN at the measurement completion time. It may be configured to calculate “Timing advance” using “eNB Rx-Tx Time Difference”.
  • 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.
  • T ADV Timing advance

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

Abstract

L'invention concerne un procédé de communication mobile comprenant : une étape pendant laquelle une station mobile (UE) envoie à une station de base sans fil (eNB) une "demande d'ordonnancement" pour émettre un signal prédéterminé ; une étape pendant laquelle la station de base sans fil (eNB) envoie à la station mobile (UE) une "autorisation de liaison montante" pour attribuer une ressource sans fil pour l'émission du signal prédéterminé ; une étape pendant laquelle la station mobile (UE) utilise la ressource sans fil attribuée par l'"autorisation de liaison montante" pour transmettre le signal prédéterminé à la station de base sans fil (eNB) ; une étape pendant laquelle la station mobile (UE) calcule un "écart de temps réception-émission d'UE" en fonction d'informations d'instructions reçues de la station de base sans fil (eNB) ; et une étape (E) pendant laquelle la station mobile (UE) envoie à la station de base sans fil (eNB) un "rapport de mesure RRC" contenant l'"écart de temps réception-émission d'UE".
PCT/JP2010/071081 2009-11-27 2010-11-26 Procédé de communication mobile, station mobile et station de base sans fil WO2011065456A1 (fr)

Applications Claiming Priority (2)

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JP2009270558A JP2011114702A (ja) 2009-11-27 2009-11-27 移動通信方法、移動局及び無線基地局
JP2009-270558 2009-11-27

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EP4214972A4 (fr) * 2020-09-18 2024-06-05 Qualcomm Inc Procédés et appareil pour établir un rapport de différence de temps rx-tx

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EP2911449B1 (fr) 2012-10-19 2018-06-06 Fujitsu Limited Procédé et dispositif de transfert intercellulaire et de reconfiguration de cellule

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4214972A4 (fr) * 2020-09-18 2024-06-05 Qualcomm Inc Procédés et appareil pour établir un rapport de différence de temps rx-tx

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