WO2011083837A1 - 移動通信方法、移動局及び無線基地局 - Google Patents
移動通信方法、移動局及び無線基地局 Download PDFInfo
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- WO2011083837A1 WO2011083837A1 PCT/JP2011/050160 JP2011050160W WO2011083837A1 WO 2011083837 A1 WO2011083837 A1 WO 2011083837A1 JP 2011050160 W JP2011050160 W JP 2011050160W WO 2011083837 A1 WO2011083837 A1 WO 2011083837A1
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- 238000010295 mobile communication Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 85
- 230000004044 response Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 33
- 238000012546 transfer Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 6
- 210000004027 cell Anatomy 0.000 description 145
- 210000004754 hybrid cell Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000011664 signaling Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 101150096310 SIB1 gene Proteins 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/04—Reselecting a cell layer in multi-layered cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
Definitions
- the present invention relates to a mobile communication method, a mobile station, and a radio base station.
- the Inbound handover procedure to the CSG (Closed Subscriber Group) cell solves the problem caused by "PCI confusion" and performs "preliminary access check".
- the station UE receives the broadcast information transmitted in the handover destination cell (Target Cell), and with respect to the wireless base station S-eNB (Serving eNB) in communication, the “CGI (Cell Global Identity) of the handover destination cell ”,“ TAI (Tracking Area Identity) ”of the handover destination cell, or“ C ”broadcasted by the handover destination cell. It is configured to transmit “member / non-member indication” indicating whether or not it belongs to “SG ID”.
- SI System Information
- the radio base station S-eNB uniquely identifies the radio base station T-eNB (Target eNB) that manages the handover destination cell using the CGI and TAI notified by “SI reporting”, and the radio base station “HO Preparation signaling” can be transmitted to the T-eNB.
- T-eNB Radio base station
- the radio base station S-eNB determines whether or not to perform a handover of the mobile station UE to the radio base station T-eNB based on the received “member / non-member indication”, or an exchange MME (Mobility). It is configured to determine whether or not it is necessary to perform “accessibility check” in Management Entity).
- the radio base station S-eNB when the radio base station S-eNB receives the “measurement report” from the mobile station UE, the radio base station S-eNB is based on “PCI (Physical Cell Identity)” included in the received “measurement report”.
- PCI Physical Cell Identity
- the cell is configured to determine whether there is a possibility of “PCI confusion” and whether it is necessary to perform “preliminary access check”.
- the radio base station S-eNB defines a PCI range used for a CSG cell / hybrid cell / open (macro) cell at the start of network operation, and based on the above-described PCI, the CSG cell / The type of hybrid cell / open cell may be determined, and if the cell specified by the above-described PCI is a CSG cell / hybrid cell, it may be determined that “preliminary access check” needs to be performed.
- the radio base station S-eNB may determine that there is a possibility of “PCI confusion” when the cell specified by the above-described PCI is a CSG cell / hybrid cell.
- the radio base station S-eNB sets the PCI range used for the open cell, and further the PCI range used for a cell having a possibility of “PCI confusion” (for example, an open type femto cell). And the range of PCI used for cells that have no possibility of “PCI confusion” (for example, normal macro cell), and when the PCI belonging to the former is reported, it is set to “PCI confusion”. It may be determined that it is necessary to solve the problem caused by the problem.
- the radio base station S-eNB requests the mobile station UE to perform “SI reporting” when it is determined that the problem caused by “preliminary access check” or “PCI confusion” needs to be solved. “SI reporting request” can be transmitted.
- the “SI reporting request” specifies the PCI of the cell that is the target of SI reporting for the mobile station UE.
- the mobile station UE When receiving the “SI reporting request”, the mobile station UE receives the SI broadcast in the PCI cell designated by the “SI reporting request” based on the “autonomous gap”, and receives the S- The CGI, TAI, and “member / non-member indication” included in the received SI are transmitted to the eNB.
- the mobile station UE temporarily transmits / receives a signal to / from a communicating cell (serving cell) at the reception timing of SI broadcast in the cell (MIB and SIB1 in the case of LTE). It is configured to interrupt and receive the SI broadcast in such a cell.
- a communicating cell serving cell
- SIB and SIB1 in the case of LTE
- the mobile station UE is configured to report necessary information to the radio base station S-eNB when the SI is successfully received within a predetermined period (scheduled about 150 ms in the LTE scheme). Has been.
- the mobile station UE is configured to report the fact to the radio base station S-eNB even if the SI is not successfully received within a predetermined period.
- the mobile station UE is configured to transmit “proximity indication” based on “autonomous search”.
- the mobile station UE when the mobile station UE holds the fingerprint information of the CSG cell to which access is granted and detects that the mobile station UE has approached the CSG cell based on the fingerprint information, the mobile station UE When “entering proximity indication” is transmitted and it is detected that the user has moved away from the CSG cell, “leaving proximity indication” is transmitted to the radio base station S-eNB.
- the finger print information represents the surrounding environment of the CSG cell, and may be, for example, the cell ID of the surrounding macro cell, the RSRP (Reference Signal Received Power) of the surrounding cell, or GPS information. .
- the RSRP Reference Signal Received Power
- the radio base station S-eNB When the “entering proximity indication” is reported from the mobile station UE, the radio base station S-eNB sends an “SI reporting request” to the PCI reported in the subsequent “measurement report” as necessary. Can be sent.
- the “proximity indication” is used not only for “SI reporting” control but also for “measurement configuration” control for different frequency cells or different RAT (Radio Access Technology) cells.
- the mobile station UE is not in a state where “measurement configuration” is set for a frequency or RAT cell different from the cell in communication, and “measurement” for a cell of a different frequency or a different RAT (Radio Access Technology) cell. (Measurement) "cannot be performed.
- the mobile station UE When the CSG cell having the access right is present at a different frequency or RAT around the cell being communicated, the mobile station UE transmits “entering proximity” to the radio base station S-eNB. By performing “indication”, it is possible to request a necessary “measurement configuration” setting, and by transmitting “leaving proximity indication”, it is possible to request deletion of unnecessary “measurement configuration”.
- Such “measurement configuration” includes “measurement object”, “reporting configuration”, “measurement identity”, “measurement gap”, etc. indicating a different frequency or RAT cell from the cell in communication. Good.
- the mobile station UE can notify information relating to the frequency and RAT for requesting “measurement configuration” by “proximity indication”.
- TA unit or PLMN Public Land Fingerprint information may be set in units of “Mobile Network”.
- the present invention has been made in view of the above-described problems, and an object thereof is to provide a mobile communication method, a mobile station, and a radio base station that can suppress the frequency of useless “SI reporting”. .
- a first feature of the present invention is a mobile communication method for detecting that a mobile station communicating in a first frequency cell has entered a predetermined area corresponding to a second frequency cell having an access right. Or when it is detected that the user has gone out of the predetermined area, the radio base station managing the cell of the first frequency is scrambled with respect to the synchronization signal broadcast in the cell of the second frequency.
- a step of transmitting instruction information including cell identification information used for processing a step of transmitting a measurement report including the cell identification information to the radio base station, and a step of transmitting the measurement report including the cell identification information.
- a step of reporting predetermined information broadcast in the cell of the second frequency in response to a report request received from a radio base station.
- a second feature of the present invention is a mobile station, when it is detected that a mobile station has entered a predetermined area corresponding to a second frequency cell having access rights during communication in the first frequency cell, or When it is detected that the mobile station has gone out of the predetermined area, it is used for a scramble process for a synchronization signal broadcast in the cell of the second frequency to the radio base station managing the cell of the first frequency
- An instruction information transmission unit configured to transmit instruction information including cell identification information
- a measurement report transmission configured to transmit a measurement report including the cell identification information to the radio base station
- a broadcast information report transmitter configured to report predetermined information broadcast in the cell of the second frequency in response to a report request received from the radio base station.
- a radio base station that manages a cell having a first frequency, the first frequency having detected that it has entered a predetermined area corresponding to a cell having a second frequency having an access right.
- Cell identification information used for the scramble process for the synchronization signal broadcast in the cell of the second frequency from the mobile station that is communicating in the cell, or from the mobile station that has detected that it has gone out of the predetermined area
- An instruction information receiving unit configured to receive instruction information including, a measurement report receiving unit configured to receive a measurement report including the cell identification information from the mobile station, and the mobile station
- the gist includes a report request transmission unit configured to transmit a report request for requesting a report of predetermined information broadcast in the cell of the second frequency.
- FIG. 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 mobile station according to the 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 sequence diagram showing an operation of the mobile communication system according to the first embodiment of the present invention.
- the mobile communication system is an LTE mobile communication system. As shown in FIG. 1, the mobile communication system includes a cell # of a frequency f1 managed by a radio base station eNB # A. A and CSG cell # 1 of frequency f2 managed by radio base station HeNB # 1 are arranged. Here, the CSG cell # 1 is arranged in the area of the cell #A.
- the mobile station UE includes a management unit 11, a proximity indication transmission unit 12, a measurement configuration reception unit 13, a measurement unit 14, a measurement report transmission unit 15, and an SI reporting request reception unit 16.
- SI receiving unit 17 and SI reporting transmitting unit 18 are provided.
- the management unit 11 is configured to manage a predetermined area corresponding to the frequency of the CSG cell to which the mobile station UE has access rights.
- the management unit 11 is configured to manage the predetermined area # 1 corresponding to the frequency f2 of the CSG cell # 1 to which the mobile station UE has access rights.
- the predetermined area # 1 may be an area larger than the above CSG cell # 1 or may coincide with the above CSG cell # 1.
- the predetermined area # 1 is an area defined by the fingerprint information, and is information that the mobile station UE stores regarding the “peripheral environment” in which the CSG cell # 1 described above exists.
- the predetermined area # 1 may be information based on the ID of a macro cell existing in the vicinity, a signal reception level from the macro cell, GPS information, or the like, or may be a location registration area ID, a PLMN ID, or the like. What information to use may be implementation-dependent.
- the proximity indication transmission unit 12 transmits “entering proximity indication (first indication information)” or “leaving proximity indication (second indication information)” to the radio base station eNB # A with which the mobile station UE is communicating. It is configured as follows.
- the proximity indication transmission unit 12 when the proximity indication transmission unit 12 detects that the mobile station UE enters the predetermined area # 1 during communication in the cell #A, the proximity indication transmission unit 12 transmits the CSG cell # to the radio base station eNB # A. It is configured to transmit “entering proximity indication” including one PCI.
- PCI is used for a scramble process for a Primary-SCH (Synchronization Channel) signal and a Secondary-SCH signal (synchronization signal) broadcasted in the CSG cell # 1.
- PCI is classified into PCI belonging to the range used for the CSG cell, PCI belonging to the range used for the hybrid cell, and PCI belonging to the range used for the open cell.
- PCI belonging to the range used for the open cell is further divided into the PCI in the range used for a cell having a possibility of “PCI confusion” (for example, an open type feto cell) and “PCI confusion”. It may be classified as a range of PCIs used for cells that have no possibility (eg, normal macro cells).
- the proximity indication transmitting unit 12 detects that the mobile station UE has gone out of the predetermined area # 1 during communication in the cell #A, and includes “leaving proximity indication including the PCI of the CSG cell # 1”. ".”
- the RAT, frequency, CGI, and the like of CSG cell # 1 may be included.
- the measurement configuration reception unit 13 is configured to receive “measurement configuration (measurement configuration)” including “measurement gap (measurement interval)” from the radio base station eNB # A with which the mobile station UE is communicating.
- the measurement unit 14 is configured to perform a cell search at the frequency f2 in the “measurement gap” received by the measurement configuration reception unit 13, and to measure the radio quality when CSG cell # 1 is detected.
- the measurement unit 14 instructs “measurement configuration” to stop measuring the radio quality in the CSG cell # 1 of the frequency f2 in the “measurement gap” from the radio base station eNB # A with which the mobile station UE is communicating. Is received, the cell search and radio quality measurement are stopped.
- the measurement report transmission unit 15 reports a measurement result (measurement result of radio quality in CSG cell # 1) by the measurement unit 14 to the radio base station eNB # A with which the mobile station UE is communicating.
- a “measurement report” including the PCI of # 1 is configured to be transmitted.
- the SI reporting request receiving unit 16 is configured to receive an “SI reporting request” from the radio base station eNB # A with which the mobile station UE is communicating.
- the SI receiving unit 17 is configured to receive the SI broadcast in the PCI cell specified by the “SI reporting request” received by the SI reporting request receiving unit 16 based on the “autonomous gap”. Yes.
- the SI reporting transmitting unit 18 sends CGI, TAI, “member / non-member indication”, etc. included in the SI received by the SI receiving unit 17 to the radio base station eNB # A with which the mobile station UE is communicating. “SI reporting” including predetermined information is transmitted.
- the radio base station eNB # A includes a proximity indication receiving unit 21, a management unit 22, a measurement configuration transmitting unit 23, a measurement report receiving unit 24, an SI reporting request transmitting unit 25, and an SI.
- a reporting receiving unit 26 and a transfer unit 27 are provided.
- the proximity indication receiving unit 21 is configured to receive “entering proximity indication” or “leaving proximity indication” transmitted by the mobile station UE in communication with the radio base station eNB # A.
- the management unit 22 is configured to manage “entering proximity indication” or “leaving proximity indication” received by the proximity indication receiving unit 21.
- the management unit 22 is configured to manage the identification information of the mobile station UE and the PCI of the CSG cell # 1 in association with “entering proximity indication” or “leaving proximity indication”.
- the measurement configuration transmission unit 23 transmits “measurement configuration” that instructs the mobile station UE in communication with the radio base station eNB # A to start or stop the measurement of radio quality in a specific cell in the “measurement gap”. It is configured as follows.
- the measurement configuration transmission unit 23 instructs to start measurement of the radio quality in the cell of the frequency included in the “entering proximity indication” or the “leaving proximity indication” received by the proximity indication reception unit 21, which is “meur” for measuring the radio quality in the cell. May be configured to transmit.
- the measurement report receiving unit 24 is configured to receive “measurement report” transmitted by the mobile station UE in communication with the radio base station eNB # A.
- the SI reporting request transmission unit 25 is configured to transmit an “SI reporting request” to the mobile station UE in communication with the radio base station eNB # A.
- the SI reporting request transmission unit 25 receives the “entering proximity indication” or “leaving proximity indication” received by the proximity indication reception unit 21 and the “measurement report reception unit 24” based on the “measure” received by the “measure”.
- the mobile station UE may be configured to determine whether or not to transmit an “SI reporting request”.
- the SI reporting request is received.
- the transmission unit 25 instructs the mobile station UE specified by the identification information of the mobile station UE associated with the “entering proximity indication” to start transmission of “SI reporting”. May be determined to be transmitted.
- SI reporting The request transmission unit 25 considers that the mobile station UE does not have an access right to the CSG cell, and starts transmission of “SI reporting” to the mobile station UE. It is also possible to decide not to transmit the “SI reporting request” instructing to.
- the SI reporting request transmission unit 25 may be determined to transmit a “SI reporting request” uniformly.
- the SI reporting request transmission unit 25 instructs the mobile station UE to stop transmitting “SI reporting”. Even if the measurement configuration transmission unit 23 decides to transmit “measurement configuration” instructing the mobile station UE to stop measuring the radio quality in the CSG cell # 1 in the “measurement gap”. Good.
- the SI reporting receiving unit 26 is configured to receive “SI reporting” from the mobile station UE in communication with the radio base station eNB # A.
- the transfer unit 27 determines to perform handover from the cell #A of the mobile station UE to a cell under the control of another radio base station eNB, the transfer unit 27 manages the other radio base station eNB by the management unit 22 "Entering proximity indication" or “leaving proximity indication" is configured to be transferred.
- the transfer unit 27 is reported in the “entering proximity indication” received from the mobile station UE, and the PCI of the CSG cell # 1 that is not reported in the “leaving proximity indication” received from the mobile station UE. It may be configured to transfer CGI, RAT, frequency, and the like.
- the transfer unit 27 may also be configured to transfer the identification information of the mobile station UE and the PCI of the CSG cell # 1 associated with “entering proximity indication” or “leaving proximity indication”. Good.
- the transfer unit 27 may be configured to transfer these pieces of information by “HO Preparation signaling”.
- the transfer unit 27 may be configured to transfer the “configuration state” indicating whether or not the mobile station UE is permitted to transmit “proximity indication”.
- the transfer unit 27 is configured to transfer the “configuration state” indicating which RAT is permitted to transmit the “proximity indication”. It may be configured.
- the radio base station eNB # A permits transmission of “entering proximity indication” and “leaving proximity indication” to the mobile station UE in communication by individual signaling.
- the mobile station UE when the mobile station UE detects that the mobile station UE has entered the predetermined area # 1 in step S1001, the mobile station UE performs “entering proximity indication” to the radio base station eNB # A in step S1002. Send.
- the radio base station eNB # A stores the received “entering proximity indication” in the management unit 22 in step S1003, and in step S1004, the CSG cell # included in the “entering proximity indication” for the mobile station UE. 1 transmits “measurement configuration” instructing the start of measurement of radio quality in 1.
- step S1005 the mobile station UE measures the radio quality in the CSG cell # 1 based on “measurement configuration”, and in step S1006, the mobile station UE performs the measurement of the PCI of the CSG cell # 1 and the PCI of the CSG cell # 1. “Measurement report” including the measurement result of the radio quality in CSG cell # 1 is transmitted.
- step S1007 the radio base station eNB # A manages the PCI of the CSG cell # 1 included in the received “measurement report”, the identification information of the mobile station UE, and the “entering proximity indication” in association with each other by the management unit 22.
- step S1008 the mobile station UE transmits an “SI reporting request” instructing the mobile station UE to start transmitting “SI reporting”.
- step S1009 the mobile station UE receives the predetermined information broadcasted in the CSG cell # 1 indicated by the “SI reporting request”, and in step S1010, the predetermined information is transmitted to the radio base station eNB # A.
- SI reporting including
- the mobile station UE includes “entering proximity indication” including the PCI of the CSG cell # 1 having access rights to the radio base station eNB # 1; Since “leaving proximity indication” is configured to be transmitted, transmission of “SI reporting request” requesting transmission of “SI reporting” for a CSG cell to which the mobile station UE does not have access right is avoided. be able to.
- the first feature of the present embodiment is a mobile communication method, in which the mobile station UE communicating with the cell #A of the first frequency f1 corresponds to the CSG cell # 1 of the second frequency f2 having an access right.
- the CSG cell is transmitted to the radio base station eNB # A that manages the cell #A.
- proximity indication including PCI (cell identification information) used for scramble processing for the Primary-SCH signal and the Secondary-SCH signal (synchronization signal) broadcasted in # 1; and the mobile station UE
- PCI cell identification information
- synchronization signal broadcasted in # 1
- the radio base station eNB # A “measurement report (measurement report) including PCI of CSG cell # 1 And the mobile station UE in response to the “SI reporting request (report request)” received from the radio base station eNB # A, the predetermined information (for example, CGI or TAI) broadcast in the CSG cell # 1.
- SI reporting including “member / non-member indication” and the like.
- the radio base station eNB # A when the radio base station eNB # A decides to perform a handover from the cell #A of the first frequency f1 of the mobile station UE to a cell under another radio base station eNB.
- a step of transferring “proximity indication” to the other radio base station eNB may be included.
- the second feature of the present embodiment is the mobile station UE, which detects that it has entered the predetermined area # 1 during communication in the cell #A, or has left the predetermined area # 1.
- a proximity indication transmission unit 12 configured to transmit a “proximity indication” including the PCI of the CSG cell # 1 to the radio base station eNB # A that manages the cell #A.
- the measurement report transmission unit 15 configured to transmit the “measurement report” including the PCI of the CSG cell # 1 to the radio base station eNB # A and the “SI received from the radio base station eNB # A”
- predetermined information Eg to the gist that comprises a SI reporting transmission unit configured to transmit the "SI reporting” including CGI or TAI or "member / non-member indication", etc.
- the third feature of the present embodiment is a radio base station eNB # A that manages the cell #A, and the mobile station UE that is communicating with the cell #A that has detected that it has entered the predetermined area # 1, or , Reception of proximity indication that is configured to receive “proximity indication” including PCI of CSG cell # 1 from mobile station UE that is communicating in cell #A that has detected that it has left the predetermined area # 1
- the CSG cell # 1 is notified to the measurement report receiving unit 24 configured to receive the “measurement report” including the PCI of the CSG cell # 1 from the unit 21, the mobile station UE, and the mobile station UE.
- Specified information for example, CGI, TAI, “member / non-member”
- a SI reporting request transmission unit 25 is configured to include a r indication ", etc.) to request transmission of the" SI reporting "transmits" SI reporting request ".
- a transfer unit 27 configured to transfer “proximity indication” may be provided.
- the operations of the mobile station UE and the radio base station eNB # A / HeNB # 1 described above may be implemented by hardware, may be implemented by a software module executed by a processor, or a combination of both May be implemented.
- 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 mobile station UE or the radio base station eNB # A / HeNB # 1. Further, the storage medium and the processor may be provided in the mobile station UE or the radio base station eNB # A / HeNB # 1 as a discrete component.
- UE ... mobile station 11 ... management unit 12 ... proximity indication transmitting unit 13 ... measurement configuration receiving unit 14 ... measuring unit 15 ... measurement report transmitting unit 16 ... SI reporting request receiving unit 17 ... SI receiving unit 18 ... SI reporting transmitting unit eNB # A ... Radio base station 21 ... Proximity indication receiving unit 22 ... Management unit 23 ... Measurement configuration transmitting unit 24 ... Measurement report receiving unit 25 ... SI reporting request transmitting unit 26 ... SI reporting receiving unit 27 ... Transfer unit
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Abstract
Description
図1乃至図3を参照して、本発明の第1の実施形態に係る移動通信システムの構成について説明する。
図4を参照して、本発明の第1の実施形態に係る移動通信システムの動作について説明する。
本発明の第1の実施形態に係る移動通信システムによれば、移動局UEが、無線基地局eNB#1に対して、アクセス権を有するCSGセル#1のPCIを含む「entering proximity indication」及び「leaving proximity indication」を送信するように構成されているため、移動局UEがアクセス権を有していないCSGセルについての「SI reporting」の送信を要求する「SI reporting要求」の送信を回避することができる。
11…管理部
12…proximity indication送信部
13…measurement configuration受信部
14…測定部
15…measurement report送信部
16…SI reporting要求受信部
17…SI受信部
18…SI reporting送信部
eNB#A…無線基地局
21…proximity indication受信部
22…管理部
23…measurement configuration送信部
24…measurement report受信部
25…SI reporting要求送信部
26…SI reporting受信部
27…転送部
Claims (7)
- 第1周波数のセルで通信中の移動局が、アクセス権を有する第2周波数のセルに対応する所定エリア内に入ったことを検出した場合、或いは、該所定エリアから外に出たことを検出した場合に、該第1周波数のセルを管理する無線基地局に対して、該第2周波数のセルにおいて報知される同期信号に対するスクランブル処理に用いられるセル識別情報を含む指示情報を送信する工程と、
前記移動局が、前記無線基地局に対して、前記セル識別情報を含む測定報告を送信する工程と、
前記移動局が、前記無線基地局から受信した報告要求に応じて、前記第2周波数のセルにおいて報知されている所定情報を報告する工程とを有することを特徴とする移動通信方法。 - 前記無線基地局が、受信した前記指示情報及び前記測定報告に基づいて、前記移動局に対して、前記報告要求を送信するか否かについて決定する工程を有することを特徴とする請求項1に記載の移動通信方法。
- 前記無線基地局が、前記移動局の該第1周波数のセルから他の無線基地局配下のセルへのハンドオーバを行うことを決定した場合に、該他の無線基地局に対して、前記指示情報を転送する工程を有することを特徴とする請求項1に記載の移動通信方法。
- 移動局であって、
第1周波数のセルで通信中に、アクセス権を有する第2周波数のセルに対応する所定エリア内に入ったことを検出した場合、或いは、該所定エリアから外に出たことを検出した場合に、該第1周波数のセルを管理する無線基地局に対して、該第2周波数のセルにおいて報知される同期信号に対するスクランブル処理に用いられるセル識別情報を含む指示情報を送信するように構成されている指示情報送信部と、
前記無線基地局に対して、前記セル識別情報を含む測定報告を送信するように構成されている測定報告送信部と、
前記無線基地局から受信した報告要求に応じて、前記第2周波数のセルにおいて報知されている所定情報を報告するように構成されている報知情報報告送信部とを具備することを特徴とする移動局。 - 第1周波数のセルを管理する無線基地局であって、
アクセス権を有する第2周波数のセルに対応する所定エリア内に入ったことを検出した該第1周波数のセルで通信中の移動局、或いは、該所定エリアから外に出たことを検出した該移動局から、該第2周波数のセルにおいて報知される同期信号に対するスクランブル処理に用いられるセル識別情報を含む指示情報を受信するように構成されている指示情報受信部と、
前記移動局から、前記セル識別情報を含む測定報告を受信するように構成されている測定報告受信部と、
前記移動局に対して、前記第2周波数のセルにおいて報知されている所定情報の報告を要求する報告要求を送信するように構成されている報告要求送信部とを具備することを特徴とする無線基地局。 - 前記報告要求送信部は、受信した前記指示情報及び前記測定報告に基づいて、前記移動局に対して、前記報告要求を送信するか否かについて決定するように構成されていることを特徴とする請求項5に記載の無線基地局。
- 前記移動局の該第1周波数のセルから他の無線基地局配下のセルへのハンドオーバを行うことを決定した場合に、該他の無線基地局に対して、前記指示情報を転送するように構成されている転送部を具備することを特徴とする請求項5に記載の無線基地局。
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US8918105B2 (en) | 2014-12-23 |
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