WO2013115252A1 - Procédé de communication mobile, station de base sans fil et station mobile - Google Patents

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

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Publication number
WO2013115252A1
WO2013115252A1 PCT/JP2013/052048 JP2013052048W WO2013115252A1 WO 2013115252 A1 WO2013115252 A1 WO 2013115252A1 JP 2013052048 W JP2013052048 W JP 2013052048W WO 2013115252 A1 WO2013115252 A1 WO 2013115252A1
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WO
WIPO (PCT)
Prior art keywords
cell
measurement
signal
base station
radio base
Prior art date
Application number
PCT/JP2013/052048
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English (en)
Japanese (ja)
Inventor
高橋　秀明
和晃 武田
武志 中森
安部田　貞行
石井　啓之
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.)
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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 WO2013115252A1 publication Critical patent/WO2013115252A1/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 communication method, a radio base station, and a mobile station.
  • the LTE (Long Term Evolution) -Advanced method defines a new CC that is not compatible with an existing CC (Component Carrier, component carrier) in the CA (Carrier Aggregation, Carrier Aggregation), and the existing CC and the new CC. Realization of CA using the above has been studied.
  • Legacy Carrier such an existing CC is referred to as “Legacy Carrier”, and such a new CC is referred to as “Additional Carrier”.
  • control channel Control Channel
  • CRS Cell specific Reference Signal, cell-specific reference signal
  • the cell # 11 is a cell that is operated by a coverage band that supports a wide area
  • the cells # 11A / # 11B are cells that are operated by a capacity band for improving throughput at a hot spot. It is.
  • the radio base station eNB sets the cell # 11A / # 11B as “Scell (Secondary Cell)” for the mobile station UE that sets the cell # 11 as “Pcell (Primary Cell)”. for, the mobile station UE, it is necessary to perform the measurement process in the cell # 11A / # 11B.
  • the mobile station UE has the cells # 11A / # 11B. There is a problem that the measurement process cannot be performed.
  • the present invention has been made in view of the above-described problems, and even when “Additional Carrier” is applied, a mobile communication method, a radio base station, and a mobile communication method capable of appropriately performing measurement processing
  • the purpose is to provide a mobile station.
  • a first feature of the present invention is a mobile communication method in a mobile communication system comprising a first cell and a second cell arranged in the coverage area of the first cell, wherein the radio base station comprises: Transmitting to the mobile station connected in the first cell information for specifying a measurement signal to be used in the measurement process in the second cell; and And performing a measurement process in the second cell based on information for specifying, and the gist of the measurement signal is a signal other than a cell-specific reference signal.
  • a second feature of the present invention is a radio base station that manages the first cell in a mobile communication system that includes the first cell and a second cell that is disposed within the coverage area of the first cell.
  • a transmission unit configured to transmit information for specifying a measurement signal to be used for measurement processing in the second cell to a mobile station connected in the first cell;
  • the gist of the measurement signal is a signal other than a cell-specific reference signal.
  • a third feature of the present invention is a mobile station used in a mobile communication system comprising a first cell and a second cell arranged in a coverage area of the first cell, wherein the first cell Receiving unit configured to acquire information for specifying a measurement signal to be used in the measurement process in the second cell from the radio base station that manages the first cell when in the connected state in FIG. And a measurement unit configured to perform measurement processing in the second cell based on information for specifying the measurement signal, wherein the measurement signal is other than a cell-specific reference signal The gist of this is the signal.
  • 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 radio base station according to the first embodiment of the present invention.
  • FIG. 3 is a diagram illustrating an example of a format of “MeasObjectEUTRA” transmitted by the radio base station according to the first embodiment of the present invention.
  • FIG. 4 is a diagram illustrating an example of a format of “PRS-Info” in “MeasObjectEUTRA” transmitted by the radio base station according to the first embodiment of the present invention.
  • FIG. 5 is a diagram illustrating an example of signals used for measurement processing in “Additional Carrier” in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 6 is a diagram illustrating an example of signals used for measurement processing in “Additional Carrier” in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 7 is a functional block diagram of the mobile station according to the first embodiment of the present invention.
  • the mobile communication system supports the LTE-Advanced scheme and is configured to provide CA.
  • the mobile communication system includes a radio base station eNB # 1 that manages cells # 11 / # 12 / # 13, a radio base station eNB # 11A that manages cell # 11A, Radio base station eNB # 11B that manages cell # 11B, radio base station eNB # 12A that manages cell # 12A, radio base station eNB # 13A that manages cell # 13A, and radio that manages cell # 13B Base station eNB # 13B etc. are provided.
  • the cells # 11A / # 11B are arranged in the cover area of the cell # 11
  • the cell # 12A is arranged in the cover area of the cell # 12
  • the cells # 13A / # 13B are Arranged in the cover area of cell # 13.
  • cells # 11 / # 12 / # 13 are macro cells operated by “Legacy Carrier”, and cells # 11A / # 11B / # 12A / # 13A / # 13B are operated by “Additional Carrier”. It may be a pico cell.
  • At least one of the cells # 11A / # 11B / # 12A / # 13A / # 13B may be operated by the “Legacy Carrier”.
  • the mobile station UE is described as being in the “RRC_Connected state” in the cell # 11 under the radio base station eNB # 1.
  • the functions of the radio base stations # 11A / # 11B / # 12A / # 13A / # 13B may be the same as the functions of the radio base station eNB # 1, or are different from the functions of the radio base station eNB # 1. It may be.
  • the radio base station eNB # 1 includes a receiving unit 11 and a transmitting unit 12.
  • the receiving unit 11 is configured to receive various signals transmitted by the mobile station UE and surrounding radio base stations # 11A / # 11B / # 12A / # 13A / # 13B.
  • the receiving unit 11 may be configured to receive “Measurement Report” from the mobile station UE.
  • the receiving unit 11 receives setting information such as information indicating whether “Additional Carrier” is applied from the surrounding radio base stations # 11A / # 11B / # 12A / # 13A / # 13B. It may be configured.
  • the transmission unit 12 is configured to transmit various signals to the mobile station UE and surrounding radio base stations # 11A / # 11B / # 12A / # 13A / # 13B.
  • the transmission unit 12 may be configured to transmit “RRC Reconfiguration” including “Measurement Configuration” including “MeasObjectEUTRA” to the mobile station UE.
  • the transmission unit 12 specifies, for the mobile station UE, information for specifying a measurement signal to be used for measurement processing in the measurement target carrier (specifically, information for specifying the configuration of the measurement signal). ) May be configured to be notified.
  • the transmission unit 12 may be configured to notify the mobile station UE of information for specifying a measurement signal to be used for measurement processing in the cells # 11A / # 11B.
  • the transmission unit 12 performs “positioning reference sign as a signal for a new addition carrier measurement or a signal for a new addition carrier measurement” in “MeasObjectEUTRA”.
  • Information for specifying the measurement signal may be notified.
  • PRS may be used as the measurement signal.
  • the transmission unit 12 performs the #new measurement signal for Positioning 11 in the cell # 11A / # in the “MeasObjectEUTRA” as a signal for a new addition carrier measurement or a signal for a new addition carrier measurement # 11A / # in the B11 measurement process in the cell # 11A.
  • PRS-info shown in FIG. 4 may be set.
  • the first signal shown in FIG. 5 may be used instead of the PRS, or the second signal shown in FIG. 6 may be used.
  • the first signal includes N orthogonal signals generated by randomly shifting subcarriers for each orthogonal sequence symbol and 6 orthogonal sequences generated with reference to the PRS. Of non-orthogonal sequences.
  • the second signal includes an orthogonal sequence generated using phase rotation in the frequency direction (cyclic shift in the time domain) instead of shifting subcarriers, and a scramble code of each orthogonal sequence. It consists of a non-orthogonal sequence generated by changing.
  • Identification information is given to each of the above-described PRS, the first signal, and the second signal, and the transmission unit 12 uses the “New additional carrier measurement” in “CellToAddModList-r11” in “MeasObjectEUTRA”.
  • Information for specifying signals other than CRS to be used for measurement processing (specifically, by setting such identification information in the “reference signal for Positioning as a signal for a new additional carrier measurement signal”) it may be configured to notify the information) for identifying the structure of the signal.
  • the mobile station UE includes a reception unit 21, a measurement unit 22, and a transmission unit 23.
  • the receiving unit 21 is configured to receive various signals transmitted by the radio base station eNB.
  • the receiving unit 21 may be configured to receive “RRC Reconfiguration” including “Measurement Configuration” including “MeasObjectEUTRA” from the radio base station eNB.
  • the reception unit 21 uses the “New addition carrier signal” signal in the “MeasObjectEUTRA” or the Positioning Reference signal as a signal for the new addition carrier measurement signal 11 in the measurement # 11A / # in the cell # 11A #.
  • Information for specifying the power measurement signal (specifically, information for specifying the configuration of the signal for measurement) may be acquired.
  • the measurement unit 22 is configured to perform a measurement process in accordance with “Measurement Configuration” received by the reception unit 21.
  • the measurement unit 22 specifies information for specifying a measurement signal to be used for measurement processing in the cells # 11A / # 11B (specifically, information for specifying the configuration of the measurement signal). May be configured to perform the measurement process described above.
  • the transmission unit 23 is configured to transmit “Measurement Report” including the above measurement result to the radio base station eNB.
  • the radio base station eNB uses the “Reference signal for Positioning” as a signal for “new addition carrier measurement” or a signal for new addition carrier measurement in “MeasObjectEUTRA”, 11, the mobile station UE in the “RRC_Connected state” can be notified of information for specifying the measurement signal in the cells # 11A / # 11B. Before setting # 11B as “Scell (Secondary Cell)”, the mobile station UE can perform measurement processing in the cells # 11A / # 11B.
  • the first feature of the present embodiment is that mobile communication in a mobile communication system comprising a cell # 11 (first cell) and a cell # 11A (second cell) arranged in the cover area of the cell # 11.
  • This is a method for the radio base station eNB # 1 to specify a measurement signal to be used for the measurement process in the cell # 11A for the mobile station UE in the “RRC_Connected state (connected state)” in the cell # 11.
  • the mobile station UE performs a measurement process in the cell # 11A based on the received information for specifying the measurement signal, and the measurement signal is a CRS (
  • the gist is that the signal is a signal other than a cell-specific reference signal.
  • a second feature of the present embodiment is that a radio base station eNB # that manages the cell # 11 in a mobile communication system that includes the cell # 11 and the cell # 11A that is arranged in the cover area of the cell # 11. 1 is a transmission configured to transmit information for specifying a measurement signal to be used in the measurement process in the cell # 11A to the mobile station UE in the “RRC_Connected state” in the cell # 11. comprising a part 12, such measurement signal is summarized in that a signal other than CRS.
  • a third feature of the present embodiment is a mobile station UE used in a mobile communication system that includes a cell # 11 and a cell # 11A arranged in the cover area of the cell # 11, and the cell # 11 In the “RRC_Connected state”, the radio base station eNB # 1 managing the cell # 11 is configured to acquire information for specifying a measurement signal to be used for the measurement process in the cell # 11A. And a measurement unit 22 configured to perform measurement processing in the cell # 11A based on the information for specifying the received measurement signal, and the measurement signal is a CRS.
  • the gist is that it is a signal other than.
  • 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 a storage medium of an arbitrary format 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.
  • UE ... mobile station eNB ... radio base station 11, 21 ... receiver 12, 23 ... transmitter 22 ... measuring unit

Abstract

La présente invention a pour objectif d'exécuter un processus de mesure adéquat, même lorsqu'une « porteuse supplémentaire » est appliquée. Un procédé de communication mobile selon cette invention se déroule de la manière suivante : une station de base sans fil (eNB#1) transmet à une station mobile (UE) qui est dans un « état RRC connecté » dans une cellule (#11) des informations destinées à identifier un signal de mesure à utiliser lors d'un processus de mesure dans une cellule (#11A) ; et la station mobile (UE) exécute le processus de mesure dans la cellule (#11A) sur la base des informations reçues destinées à identifier le signal de mesure. Le signal de mesure n'est pas un CRS.
PCT/JP2013/052048 2012-01-30 2013-01-30 Procédé de communication mobile, station de base sans fil et station mobile WO2013115252A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012017369A JP2013157826A (ja) 2012-01-30 2012-01-30 移動通信方法、無線基地局及び移動局
JP2012-017369 2012-01-30

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WO2013115252A1 true WO2013115252A1 (fr) 2013-08-08

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Citations (1)

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WO2011021388A1 (fr) * 2009-08-19 2011-02-24 パナソニック株式会社 Système de communication mobile, appareil de gestion de réseau, appareil de station de base macrocellulaire et procédé de contrôle d'interférences

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MX2012008020A (es) * 2010-01-08 2012-11-23 Fujitsu Ltd Metodo y aparato para realizar administración de portador en el sistema de adición de portador.
EP2725845B1 (fr) * 2011-08-05 2018-05-16 Panasonic Intellectual Property Corporation of America Terminal, dispositif d'émission, procédé de rapport de qualité de réception et procédé de réception

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011021388A1 (fr) * 2009-08-19 2011-02-24 パナソニック株式会社 Système de communication mobile, appareil de gestion de réseau, appareil de station de base macrocellulaire et procédé de contrôle d'interférences

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* Cited by examiner, † Cited by third party
Title
CATT: "Discussion on additional carrier types", 3GPP TSG RAN WG1 MEETING #67, RL-113726, 18 November 2011 (2011-11-18) *
LG ELECTRONICS: "Synchronization Aspects on Additional Carrier Type", 3GPP TSG RAN WG1 MEETING #67, 18 November 2011 (2011-11-18) *
PANASONIC: "Channels and signals for additional carrier type", 3GPP TSG RAN WG1 MEETING #67, RL- 113804, 18 November 2011 (2011-11-18) *

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