JP2013078061A - Device, terminal, system and method for radio communication - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio communication device capable of preventing handing over to a cell undesirable for a handover target.SOLUTION: A radio communication device, capable of providing an access restriction cell permitting an access thereto from only a particular terminal, includes: a notification information generation unit for generating false identification information, not used in the radio communication device, or vacant information which are set to be access restriction identification information included in cell notification information and not acceptable as a handover target cell and; and a handover management unit for rejecting a handover request based on a handover request message if the false identification information or the vacant information is included in the handover request message transmitted from another radio communication device.

Description

  The present invention relates to a radio communication device, a radio communication terminal, a radio communication system, and a radio communication method for preventing a radio communication device from handing over a radio communication terminal to an unintended cell of the radio communication device.

  The standardization organization 3GPP (The 3rd Generation Partnership Project) is promoting standardization of LTE-Advanced (Long Term Evolution Advanced: LTE-A) as a next-generation communication standard compatible with the LTE (Long Term Evolution) system. . In LTE, a wireless communication device (hereinafter also referred to as “NE (Network Entity)”) of a network (Evolved Universal Terrestrial Radio Access Network: E-UTRAN) provides one or more communication cells.

  The wireless communication device includes a wireless communication base station (E-UTRAN NodeB: eNB), an extended base station (Remote Radio Head: RRH), a relay device (Relay Node (RN) or repeater), and a home base station (Home eNoede B: HeNB). ) And the like, which is an apparatus serving as an access point for a wireless communication terminal (User Equipment: UE). The wireless communication terminal belongs to one communication cell among one or more communication cells provided by the wireless communication device. Note that, when a plurality of frequencies are used, the wireless communication terminal belongs to one communication cell at one frequency. Hereinafter, the communication cell is simply referred to as “cell”, and the wireless communication terminal is simply referred to as “terminal”.

  FIG. 20 is a diagram illustrating an example of a situation in which a HeNB is installed. In the example shown in FIG. 20, a plurality of HeNBs (HeNB1, HeNB2) are installed in the area of the wireless communication device NE1. HeNB connects with MME (Mobility Management Entity) via S1 interface. When the terminal (UE) performs handover to the HeNB, the source wireless communication device (Source NE: SNE) transmits a handover request message to the HeNB via the S1 interface. However, when a handover can be performed without going through the MME, such as a handover between HeNBs having the same CSG-ID (Closed Subscriber Group Identity), a handover through the X2 interface is also supported. The S1 interface is an interface connecting the wireless communication device and the MME. The X2 interface is an interface that connects wireless communication apparatuses.

  HeNB provides an open cell, a CSG (Closed Subscriber Group) cell, or a hybrid cell. An open cell is a cell accessible to all terminals. The CSG cell is a cell in which accessible terminals are restricted. For this reason, the terminal can connect only to the CSG cell registered as a member. That is, the terminal cannot connect to the CSG cell unless it is a member even if it detects a CSG cell with good reception quality except in an emergency. A terminal judges whether a cell is a CSG cell by the CSG instruction | indication (CSG Indication) contained in the alerting | reporting information of a CSG cell. When the CSG indication is set to true (TRUE), the terminal determines that it is a CSG cell. Also, the terminal determines whether it can be accessed based on the CSG identifier (CSG Identity) included in the broadcast information of the CSG cell. The terminal transmits a white list (information combining a list of CSG identifiers of accessible CSG cells and a list of PLMN (Public Land Mobile Network) identifiers) notified from the network, and CSG included in the broadcast information of the detected CSG cells. Match identifiers. When the CSG identifier of the detected CSG cell is included in the white list, the terminal determines that the terminal is a member of the CSG cell. A hybrid cell is a cell having elements of both an open cell and a CSG cell. The hybrid cell is a cell in which the CSG identifier is included while the CSG instruction is set to FALSE in the broadcast information.

  All cells have cell identification information called physical cell identity (PCI). As illustrated in FIG. 20, there may be a plurality of cells managed by a HeNB base station having the same PCI in the vicinity of a cell provided by a wireless communication apparatus to which the terminal is currently connected. Here, the case where the cell managed by the HeNB base station is a CSG cell will be described as an example. When the terminal sends a measurement report including the PCI of the CSG cell to the wireless communication device, the wireless communication device may not be able to uniquely determine the CSG cell. In this case, the radio communication apparatus causes the terminal to receive the broadcast information of the cell, and notifies the measurement configuration (Measurement Configuration) for the purpose of reporting the CGI and reporting whether it is a member of the CSG cell (reportCGI). . This measurement configuration includes the cell PCI that causes the terminal to report CGI, and information that the purpose is reportCGI. When the terminal receives a measurement setting for the purpose of reportCGI, the terminal receives SIB1 (System Information Block Type1) which is broadcast information of a cell designated by PCI. The terminal detects a cell global identifier (CGI) that is a globally unique cell identifier included in the SIB1. Further, the terminal determines whether it is a member of the CSG cell from the CSG identifier included in the SIB 1 and the white list held by itself. The terminal transmits a measurement result report (Measurement Report) including information on whether the cell is a member of the CGI and the CSG cell to the wireless communication apparatus. Based on such information, the wireless communication device determines the handover destination and determines the handover.

  Furthermore, the terminal generates past information (Finger Print) of the cell when connected to the CSG cell. When detecting that the terminal has approached an accessible CSG cell based on past information, the terminal notifies the currently connected wireless communication device by “Proximity Indication”. When the frequency notified by “Proximity Indication” is not included in the setting information for measurement, the wireless communication device transmits a measurement setting message of the frequency to the terminal. Thereby, the terminal can quickly detect and measure an accessible CSG cell.

  FIG. 21 is a timing chart illustrating an example of a procedure in which the terminal UE1 connected to the radio communication device SNE1 performs a handover to the HeNB base station THeNB1. The HeNB base station THeNB1 manages the CSG cell A. When determining that the terminal UE1 has approached the CSG cell A based on the past information, the terminal UE1 notifies the radio communication device SNE1 of the frequency of the cell A by “Proximity Indication”. The radio communication device SNE1 transmits a measurement configuration (Measurement Configuration) of the frequency of the cell A to the terminal UE1. When the terminal UE1 detects the cell A and the reception quality of the cell A satisfies the condition for sending the measurement result report (Measurement Report), the terminal UE1 sends a measurement result report (Measurement Report) including the PCI of the cell A and the reception quality. Transmit to the wireless communication device SNE1. When the cell cannot be identified from the PCI included in the measurement result report, the radio communication device SNE1 instructs the terminal UE1 to reportCGI for the cell A of the PCI. The terminal UE1 transmits a CGI report of the cell A instructed to reportCGI and a measurement result report including the state of “member” to the radio communication device SNE1. The wireless communication device SNE1 determines a handover to the CSG cell A based on the information. The radio communication device SNE1 transmits a handover request message to the handover destination HeNB base station (Target HeNB1: THeNB1) using the CGI of the cell A. The HeNB base station THeNB1 performs handover approval (admission) to the cell A. The HeNB base station THeNB1 transmits a handover response (Handover Response) message including a handover command for the terminal UE1 to the radio communication device SNE1. The radio communication device SNE1 transmits a handover command instructing handover to the cell A to the terminal UE1. The terminal UE1 starts a handover to the cell A. Further, in order to distinguish between the CSG cell and other cells, there is a PCI delimiter (PCI Range) for distinguishing between the PCI of the CSG cell and the PCI of other cells. When “non-member” is notified in the measurement result report from the terminal, the wireless communication device SNE1 determines that handover is not performed when it is determined that the handover destination cell is a CSG cell by PCI delimiter.

  The above procedure is an example. For example, even when there is no “Proximity Indication”, handover from the radio communication apparatus to the HeNB base station is performed. Further, for example, the terminal performs the same operation with respect to the hybrid cell.

3GPP TS36.300 v10.4.0, “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description” 3GPP TS36.331 v10.2.0, “Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Resource Control (RRC)”

  FIG. 22 is a diagram illustrating an example of the arrangement of the radio communication device SNE1, the HeNB base station THeNB1, and the terminal UE1. FIG. 23 is a diagram illustrating an example of each frequency cell managed by the radio communication apparatus SNE1 and each frequency cell managed by the HeNB base station THeNB1. As shown in FIG. 23, the radio communication device SNE1 manages CellA (CGI = 100) of frequency f1, CellB (CGI = 101) of frequency f2, and CellC (CGI = 102) of frequency f3. The HeNB base station THeNB1 manages Cell1 (CGI = 10) of frequency f1 and Cell2 (CGI = 10) of frequency f2. When the S1 interface is established between the MME and the eNB (wireless communication apparatus SNE1), the S1 interface is set up using the eNB identifier. Since cells managed by the eNB have different CGI, each cell can be distinguished. On the other hand, when the S1 interface is established between the MME and the HeNB (HeNB base station THeNB1), the setup of the S1 interface is performed using the HeNB identifier. Since the HeNB identifier and the CGI have the same value, when the HeNB manages a plurality of cells, the cells have the same CGI and cannot distinguish each cell.

  FIG. 24 is a diagram illustrating an example of a timing chart in which the terminal performs handover from the radio communication apparatus SNE1 to the HeNB base station THeNB1. In the example illustrated in FIG. 24, the terminal UE1 is connected to any cell of the radio communication device SNE1. The radio communication device SNE1 sets the measurement configuration (measurement configuration) of the frequency f2 in the terminal UE1. When the measurement value of Cell2 satisfies the condition for transmitting the measurement result report, terminal UE1 transmits a measurement result report (Measurement Report) including the reception quality of Cell2 to radio communication apparatus SNE1. Here, when it is not possible to determine which cell is Cell2, the radio communication device SNE1 sets a measurement configuration (Measurement Configuration) instructing reportCGI for Cell2 in the terminal UE1. When the terminal UE1 is instructed to reportCGI of Cell2, the terminal UE1 receives SIB1 of Cell2. The terminal UE1 receives a global identifier (Cell Global ID: CGI) of a cell included in the SIB1. Further, when the UE 1 is notified by the SIB1 that it is a CSG cell, the terminal UE1 compares the CSG identifier included in the SIB1 with the white list held by the terminal UE1, and determines whether it is a member of the CSG cell. The terminal UE1 creates a measurement result report (Measurement Report) including the CGI and CSG member information of Cell2 and transmits the measurement result report to the radio communication device SNE1. When the radio communication apparatus SNE1 determines a handover to Cell2 based on the measurement result report (Measurement Report) received from the terminal UE1, the radio communication apparatus SNE1 transmits a handover request message (Handover Request) to the HeNB base station THeNB1 using the CGI of Cell2. .

  Here, since the CGI of Cell2 and the CGI of Cell1 are the same, the HeNB base station THeNB1 may erroneously determine that it is a handover request message from CGI to Cell1 in the handover request message. In this case, the HeNB base station THeNB1 approves handover to Cell1, and transmits a handover response including a handover command to Cell1 to the radio communication device SNE1. The radio communication device SNE1 transmits a handover command to Cell1 to the terminal UE1. When the terminal UE1 receives the handover command to Cell1, the terminal UE1 starts handover to Cell1.

  Thus, the radio communication apparatus SNE1 may hand over the terminal UE1 to Cell1 in a situation where the reception quality of Cell1 in the terminal UE1 is unknown. At this time, since the terminal UE1 is not always connected to a cell having the best reception quality in frequency, the reception quality of the terminal UE1 may be deteriorated. In addition, there is a high possibility that the power transmitted by the terminal UE1 becomes interference power with respect to data transmitted by other terminals. Therefore, there is a need for a method in which the radio communication device SNE1 hands over the terminal UE1 to a cell in which the reception quality of the terminal UE1 is known.

  An object of the present invention is to provide a wireless communication device, a wireless communication terminal, a wireless communication system, and a wireless communication method that can prevent a handover to a cell that is not desirable as a handover destination.

  The present invention is a wireless communication apparatus capable of providing an access-restricted cell that allows access only to a specific terminal, and the wireless communication device uses the access-restricted identification information included in broadcast information of a cell that is not accepted as a handover destination cell. Provided is a wireless communication device comprising: a broadcast information creation unit that creates the broadcast information in which false identification information or empty information that is not used by the device is set; and a transmission unit that transmits the broadcast information to a terminal.

  The present invention is a wireless communication terminal that wirelessly communicates with a wireless communication device, and whether access to a cell indicated by the broadcast information is prohibited with reference to broadcast information from a nearby wireless communication device that is not communicating When the determination result by the access prohibition determination unit and the access prohibition determination unit indicate access prohibition to the predetermined cell, a measurement result report related to the predetermined cell is generated including the determination result by the access prohibition determination unit Provided is a wireless communication terminal comprising a measurement result report creation unit and a transmission unit that transmits the measurement result report to a wireless communication device to which the wireless communication terminal is connected.

  The present invention is a wireless communication terminal that wirelessly communicates with a wireless communication device, and whether access to a cell indicated by the broadcast information is prohibited with reference to broadcast information from a nearby wireless communication device that is not communicating A parameter indicating that the wireless communication terminal is not a terminal permitted to access the predetermined cell when the determination result by the access prohibition determining unit indicates that access to the predetermined cell is prohibited. A wireless communication terminal comprising: a measurement result report generating unit that generates a measurement result report related to the predetermined cell; and a transmission unit that transmits the measurement result report to a wireless communication device to which the wireless communication terminal is connected. provide.

  The present invention is a wireless communication system in which a wireless communication terminal can communicate with a wireless communication apparatus using a plurality of cells, and the wireless communication terminal is instructed by a measurement setting transmitted from a connected wireless communication apparatus When a cell detected at a frequency satisfies the condition for transmitting a measurement result report, the measurement result report includes the reception quality of the cell and the reception quality of the cell with the best reception quality at another frequency indicated by the measurement setting. A measurement result report creation unit to be created; and a transmission unit that transmits the measurement result report created by the measurement result report creation unit to the connected wireless communication device, wherein the connected wireless communication device has the wireless As an instruction to the communication terminal, the measurement setting at the frequency for determining the transmission of the measurement result report includes the reception quality of the cell having the best reception quality when sending the measurement result report. Create a measurement configuration including an indication of wave number, to provide a wireless communication system to be transmitted to the wireless communication terminal.

  The present invention is a wireless communication system in which a wireless communication terminal can communicate with a wireless communication apparatus using a plurality of cells including a primary cell and a secondary cell, and the wireless communication terminal performs communication using a plurality of cells. An information management unit that creates and manages past information related to each cell at the time of performing communication with one wireless communication device, information obtained from the second wireless communication device that is connected, and a past that is managed by the information management unit From information, a proximity determination unit that determines whether the wireless communication terminal has approached the first wireless communication device, and past information managed by the information management unit, and communicates with the first wireless communication device A cell information creation unit that creates cell information on a plurality of cells when performed, and a measurement result report based on the cell information created by the cell information creation unit and an instruction from the second wireless communication device, Wireless communication Each of the second wireless communication devices at a frequency of a primary cell included in the cell information transmitted from the wireless communication terminal as an instruction to the wireless communication terminal. In addition to the reception quality, a measurement setting that instructs to transmit a measurement result including the reception quality of the cell having the best reception quality at the frequency of the secondary cell included in the cell information is created and transmitted to the wireless communication terminal A wireless communication system is provided.

  The present invention is a wireless communication terminal capable of communicating with a wireless communication apparatus using a plurality of cells including a primary cell and a secondary cell, and when performing communication using the plurality of cells with the first wireless communication apparatus From the past information management unit that creates and manages past information relating to each cell, the information obtained from the connected second wireless communication device, and the past information managed by the past information management unit, the wireless communication terminal A proximity determination unit that determines whether or not the first wireless communication device is approached, and past information managed by the past information management unit, and performs communication using the first wireless communication device and the plurality of cells. A cell information creation unit that creates cell information regarding the plurality of cells, a transmission unit that transmits the cell information created by the cell information creation unit to the second wireless communication device, and the cell information Primary included In addition to the reception quality at the cell frequency, create a measurement setting that instructs to transmit the measurement result report including the reception quality of the cell with the best reception quality at the frequency of the secondary cell included in the cell information. When receiving the measurement setting from the second wireless communication device to be transmitted to the wireless communication terminal, a wireless communication terminal is provided that includes a measurement result report creating unit that creates a measurement result report according to the measurement setting.

  The present invention is a wireless communication device that wirelessly communicates with a wireless communication terminal capable of communication using a plurality of cells including a primary cell and a secondary cell, wherein the wireless communication terminal performs communication using a plurality of cells. In addition to the reception quality at the frequency of the primary cell included in the cell information related to the plurality of cells, which the wireless communication terminal creates and transmits to the wireless communication device when the wireless communication device is close to A radio communication apparatus that creates a measurement setting instructing to transmit a measurement result report including the reception quality of the cell having the best reception quality at the frequency of the secondary cell included in the cell information, and transmits the measurement setting to the radio communication terminal I will provide a.

  The present invention is a wireless communication terminal capable of communicating with a wireless communication apparatus using a plurality of cells including a primary cell and a secondary cell, and when performing communication using the plurality of cells with the first wireless communication apparatus From the past information management unit that creates and manages past information relating to each cell, the information obtained from the connected second wireless communication device, and the past information managed by the past information management unit, the wireless communication terminal A proximity determination unit that determines whether or not the first wireless communication device is approached, and past information managed by the past information management unit, and performs communication using the first wireless communication device and the plurality of cells. A cell information creation unit that creates cell information regarding primary cells included in the plurality of cells, cell information created by the cell information creation unit, and the primer instructed by the second wireless communication device The measurement report at a frequency of the cell, to provide a wireless communication terminal and a transmission unit that transmits to each of the second wireless communication device.

  The present invention relates to a wireless communication method performed by a wireless communication apparatus capable of providing an access-restricted cell that permits access only to a specific terminal, and includes access-restricted identification information included in broadcast information of a cell that is not accepted as a handover destination cell As a wireless communication method, the broadcast information in which false identification information or empty information that is not used in the wireless communication apparatus is set is created, and the broadcast information is transmitted to a terminal.

  The present invention is a wireless communication method performed by a wireless communication terminal that wirelessly communicates with a wireless communication device, and refers to broadcast information from a nearby wireless communication device that is not communicating, and accesses a cell indicated by the broadcast information When the determination result indicates that access to the predetermined cell is prohibited, a measurement result report related to the predetermined cell is created including the determination result, and the wireless communication terminal is connected to the wireless communication A wireless communication method for transmitting the measurement result report to an apparatus is provided.

  The present invention is a wireless communication method performed by a wireless communication terminal that wirelessly communicates with a wireless communication device, and refers to broadcast information from a nearby wireless communication device that is not communicating, and accesses a cell indicated by the broadcast information The wireless communication terminal includes a parameter indicating that the access to the predetermined cell is not permitted when the determination result indicates prohibition of access to the predetermined cell. Provided is a wireless communication method for creating such a measurement result report and transmitting the measurement result report to a wireless communication apparatus to which the wireless communication terminal is connected.

  The present invention is a wireless communication method performed by a wireless communication terminal capable of communicating with a wireless communication device using a plurality of cells including a primary cell and a secondary cell, and communication using the plurality of cells is performed by the first wireless communication device. And the past information related to each cell is created and managed, and from the information obtained from the connected second wireless communication device and the past information, the wireless communication terminal uses the first wireless communication device. The cell information related to the plurality of cells when communicating with the first wireless communication device using the plurality of cells with reference to the past information, In addition to the reception quality at the frequency of the primary cell indicated by the cell information transmitted from the second radio communication device to the second radio communication device, the frequency of the secondary cell included in the cell information Receive quality Receiving a measurement setting instructing to transmit a measurement result report including the reception quality of a good cell, and receiving quality at the frequency of the primary cell indicated by the measurement setting and the best reception quality of the frequency of the secondary cell. And a wireless communication method for transmitting a measurement result report including the information to the second wireless communication device.

  The present invention is a wireless communication method performed by a wireless communication device that wirelessly communicates with a wireless communication terminal capable of communication using a plurality of cells including a primary cell and a secondary cell, wherein the wireless communication terminal uses a plurality of cells. When the wireless communication device is close to another wireless communication device that has performed communication, the wireless communication terminal creates and transmits to the wireless communication device at the frequency of the primary cell included in the cell information regarding the plurality of cells. In addition to the reception quality, create a measurement setting instructing the wireless communication terminal to transmit a measurement result report including the reception quality of the cell having the best reception quality at the frequency of the secondary cell included in the cell information, A wireless communication method for transmission is provided.

  The present invention is a wireless communication method performed by a wireless communication terminal capable of communicating with a wireless communication device using a plurality of cells including a primary cell and a secondary cell, and communication using the plurality of cells is performed by the first wireless communication device. And the past information related to each cell is created and managed, and from the information obtained from the connected second wireless communication device and the past information, the wireless communication terminal uses the first wireless communication device. Cell information related to primary cells included in the plurality of cells when communication is performed with the first wireless communication device using the plurality of cells with reference to the past information. Create a measurement setting for instructing to transmit a measurement result report at the frequency of the primary cell indicated by the cell information transmitted from the second wireless communication device and transmitted to the second wireless communication device. Receive, Serial measurement result report in frequency of the primary cell instructed by measurement configuration provides a wireless communication method for transmitting to the second wireless communication device.

  According to the radio communication apparatus, radio communication terminal, radio communication system, and radio communication method according to the present invention, it is possible to prevent handover to a cell that is not desirable as a handover destination.

The figure which shows an example of the timing chart at the time of terminal UE1 transmitting "Proximity Indication" in the radio | wireless communications system of 1st Embodiment. The block diagram of terminal UE1 which comprises the radio | wireless communications system of 1st Embodiment. Block diagram of a radio communication device SNE1 constituting the radio communication system of the first embodiment The figure which shows an example of the timing chart at the time of terminal UE1 transmitting a measurement result report in the radio | wireless communications system of 2nd Embodiment. The block diagram of terminal UE1 which comprises the radio | wireless communications system of 2nd Embodiment. The flowchart which shows an example of operation | movement of terminal UE1 in 2nd Embodiment. The block diagram of radio | wireless communication apparatus SNE1 which comprises the radio | wireless communications system of 2nd Embodiment. The block diagram of HeNB base station THeNB1 which comprises the radio | wireless communications system of 2nd Embodiment. The figure which shows the other example of the timing chart at the time of terminal UE1 transmitting a measurement result report in the radio | wireless communications system of 2nd Embodiment. The figure which shows an example of the timing chart at the time of terminal UE1 transmitting a measurement result report in the radio | wireless communications system of 3rd Embodiment. The block diagram of terminal UE1 which comprises the radio | wireless communications system of 3rd Embodiment. The block diagram of radio | wireless communication apparatus SNE1 which comprises the radio | wireless communications system of 3rd Embodiment. The block diagram of HeNB base station THeNB1 which comprises the radio | wireless communications system of 3rd Embodiment. The flowchart which shows an example of operation | movement of HeNB base station THHeNB1 in 3rd Embodiment. The figure which shows an example of the timing chart at the time of terminal UE1 transmitting a measurement result report in a 4th radio | wireless communications system. The block diagram of terminal UE1 which comprises the radio | wireless communications system of 4th Embodiment. The flowchart which shows an example of operation | movement of terminal UE1 in 4th Embodiment. The block diagram of radio | wireless communication apparatus SNE1 which comprises the radio | wireless communications system of 4th Embodiment The block diagram of HeNB base station THeNB1 which comprises the radio | wireless communications system of 4th Embodiment. The figure which shows an example of the situation where HeNB is installed Timing chart showing an example of a procedure in which the terminal UE1 connected to the wireless communication device SNE1 hands over to the HeNB base station THeNB1 The figure which shows an example of arrangement | positioning of radio | wireless communication apparatus SNE1, HeNB base station THeNB1, and terminal UE1 The figure which shows an example of the cell of each frequency which the radio | wireless communication apparatus SNE1 manages, and the cell of each frequency which HeNB base station THeNB1 manages The figure which shows an example of the timing chart which a terminal hands over from radio | wireless communication apparatus SNE1 to HeNB base station THHeNB1

  An embodiment of a wireless communication system according to the present invention will be described in detail with reference to the drawings. A wireless communication system according to an embodiment described below includes at least one wireless communication terminal and a plurality of wireless communication devices that can communicate with the wireless communication terminal via a wireless communication network. In the following description, the wireless communication terminal is simply referred to as “terminal”. The terminal is, for example, a mobile phone. In the following description, a radio communication device includes a radio communication base station (E-UTRAN NodeB: eNB), an extended base station (Remote Radio Head: RRH) installed at a position away from the radio communication base station, A device that is a generic term for a relay device (relay node or repeater), a HeNB base station, a femto base station, a pico base station, or the like that is wirelessly connected to a communication base station or the like, and is a device that allows terminals to communicate wirelessly. The overhang base station (RRH) has the same function as the radio unit (Radio Frequency unit: RF unit) of the radio communication base station (eNB), and the radio communication base station (eNB) using a wired cable such as an optical fiber cable. )It is connected to the.

  The wireless communication system uses LTE or LTE-A mobile communication technology standardized by 3GPP (The 3rd Generation Partnership Project). However, the mobile communication technology used by the wireless communication system is not limited to the above standard, and is not limited to the wireless LAN (Wireless Local Area Network), IEEE802.16, IEEE802.16e or IEEE802.16m, etc., WiMAX (Worldwide Interoperability for Microwave Access), It may be 3GPP2, SAE (System Architecture Evolution), UMTS (Universal Mobile Telecommunications System), or a fourth generation mobile communication standard.

  Each wireless communication device constitutes at least one communication cell. A communication cell refers to a radio network object that a terminal can uniquely identify based on an identifier assigned to a geographical area or a difference in frequency used in the geographical area.

  In the following description, a communication cell is simply referred to as a “cell”. One radio communication apparatus constitutes one or more cells for each of one or more carrier frequencies. In addition, the said structure is a basic concept and a radio | wireless communication apparatus may comprise one cell in cooperation with another radio | wireless communication apparatus. The terminal communicates using at least one cell configured by the wireless communication device.

  Hereinafter, the radio | wireless communications system of 1st-4th embodiment is demonstrated in order.

(First embodiment)
The wireless communication system according to the first embodiment will be described with reference to FIGS. The wireless communication system according to the first embodiment includes a wireless communication terminal (terminal) and a wireless communication device. The terminal receives a reference signal transmitted from the wireless communication apparatus for each cell in the downlink, and reports a measurement result derived based on a predetermined calculation formula to the wireless communication apparatus. The radio communication apparatus allocates and manages radio resources (for example, a frequency band in a frequency domain or a time domain) for each terminal, and serves as an access point of a radio access network for the terminal. In addition, the wireless communication apparatus has a function of performing a handover process when it is determined that a handover to another cell is necessary based on a measurement result report from the terminal.

  FIG. 1 is a diagram illustrating an example of a timing chart when the terminal UE1 transmits “Proximity Indication” in the wireless communication system according to the first embodiment. As illustrated in FIG. 1, the terminal UE1 creates past information (Finger Print) when performing carrier aggregation using a PCell (Primary Cell) and an SCell (Secondary Cell) managed by the HeNB base station. Note that the terminal UE1 may create past information only when the cell provided by the HeNB base station is a CSG cell or a hybrid cell. Based on the past information, the terminal UE1 determines whether or not it has approached a previously connected cell. Note that the previously connected cell is a cell to which the terminal UE1 is allowed to connect. When determining that the terminal UE1 has approached the previously connected cell, the terminal UE1 transmits the connected cell (Serving Cell, hereinafter referred to as “own cell”) to the wireless communication device (Source Network Entity: SNE1) from the PCell information “ Proximity Indication "is created and transmitted to the wireless communication device SNE1. The wireless communication device SNE1 receives “Proximity Indication” from the terminal UE1, and creates a measurement configuration (Measurement Configuration) for causing the terminal UE1 to measure the frequency included in this “Proximity Indication”. Next, the radio communication device SNE1 transmits the created measurement configuration (Measurement Configuration) to the terminal UE1. The terminal UE1 performs measurement based on the measurement configuration.

  Thus, since terminal UE1 transmits “Proximity Indication” created from the information of PCell to radio communication apparatus SNE1, measurement configuration (Measurement Configuration) for SCell is not received from radio communication apparatus SNE1. As a result, the terminal UE1 does not transmit a measurement result report (Measurement Report) for the SCell to the radio communication device SNE1. Therefore, it is possible to prevent the radio communication apparatus SNE1 from determining the handover based on the measurement result report including the reception quality of the SCell and instructing the terminal UE1 to perform the handover to the PCell unintentionally.

[Configuration of terminal UE1 of the first embodiment]
FIG. 2 is a block diagram of the terminal UE1 configuring the wireless communication system according to the first embodiment. As illustrated in FIG. 2, the terminal UE1 of the first embodiment includes a reception unit 101, a control unit 103, and a transmission unit 105. The control unit 103 includes a past information management unit 111, a Proximity detection unit 113, a Proximity Indication creation unit 115, a white list management unit 117, a CSG member determination unit 119, a measurement management unit 121, and a measurement result report creation unit. 123. Note that the Proximity Indication creation unit 115 includes a PCell selection unit 125.

  In response to an instruction from the control unit 103, the reception unit 101 receives control information such as broadcast information or individual control information via a downlink of a cell to which the terminal UE1 is connected. The receiving unit 101 outputs the received notification information, individual control information, and the like to the control unit 103. In addition, the receiving unit 101 receives or receives a reference signal (for example, a cell reference signal (CRS)) or received signal strength (Received Signal Strength Indication) in accordance with an instruction from the measurement management unit 121 of the control unit 103. RSSI) measurement. The receiving unit 101 outputs the received reference signal or measurement result such as RSSI to the measurement management unit 121 of the control unit 103.

  The control unit 103 instructs the reception unit 101 to receive notification information or individual control information. Control information such as broadcast information or individual control information received by the receiving unit 101 is input to the control unit 103. When the individual control information includes measurement settings, the control unit 103 outputs the measurement settings to the measurement management unit 121. In addition, when reportCGI is instructed in the measurement setting, the control unit 103 instructs the receiving unit 101 to receive SIB1 that is one of broadcast information of a target cell instructed in the measurement setting. When the SIB1 corresponding to the reportCGI instruction is input and the CIB identifier is included in the SIB1, the control unit 103 outputs the CSG identifier to the CSG member determination unit 119. When the control unit 103 is instructed to output the PLMN identifier from the white list management unit 117, the control unit 103 outputs the PLMN identifier included in the SIB1. The PLMN identifier is an identifier for identifying an operator. The control unit 103 displays the CSG identifier input from the CSG member determination unit 119, the state of “member”, the CGI included in the SIB1, and the PCI (Physical Cell Identity). It outputs to 123. Note that the “member” state is a determination result of whether the terminal UE1 is a member of the CSG (member) or not (non-member). In addition, when the CSG identifier is not included in SIB 1, control unit 103 outputs CGI and PCI included in SIB 1 to measurement result report creation unit 123.

  The control unit 103 instructs the past information management unit 111 to create past information (Finger Print) when the CIB identifier is included in the SIB1, that is, when connected to the CSG cell or the hybrid cell. If the parameter “proximityIndicationEUTRA” indicating whether or not to transmit “Proximity Indication” is set to “Enable” in the individual control information (RRC Connection Reconfiguration), the control unit 103 should send “Proximity Indication”. The Proximity detection unit 113 is notified so as to make a determination. When the control unit 103 receives the individual control information, the control unit 103 creates a response message and outputs the response message to the transmission unit 105.

  Hereinafter, each component which the control part 103 has is demonstrated.

  When instructed by the control unit 103 to create past information (Finger Print), the past information management unit 111 creates past information (Finger Print) from the connected cells. The past information management unit 111 manages, for example, connected cells, adjacent cell information, frequency information, and the like together. Furthermore, the past information management unit 111 distinguishes and holds whether the connected cell is a PCell (Primary Cell) or a carrier aggregation SCell (Secondary Cell). In addition, the cell connected independently is managed as PCell. The past information management unit 111 outputs the held information to the Proximity detection unit 113 in response to the notification from the Proximity detection unit 113. When the PCell selection unit 125 asks whether the cell is a PCell or a SCell, the past information management unit 111 notifies whether the cell is a PCell or a SCell.

  When notified from the control unit 103 to determine whether or not to send “Proximity Indication”, the Proximity detection unit 113 notifies the past information management unit 111 to output information managed. The Proximity detection unit 113 detects whether the CSG cell or the hybrid cell is approached based on the past information input from the past information management unit 111 or, for example, the status of surrounding cells. When the Proximity detection unit 113 detects that the CSG cell or hybrid cell described in the past information is approaching, the Proximity detection unit 113 instructs the Proximity Indication creation unit 115 to create “Proximity Indication” corresponding to the detected CSG cell or hybrid cell.

  The Proximity Indication creating unit 115 outputs the CSG cell or hybrid cell information instructed from the Proximity detecting unit 113 to the PCell selecting unit 125 of the Proximity Indication creating unit 115. The Proximity Indication creating unit 115 creates “Proximity Indication” based on the frequency output from the PCell selecting unit 125, and outputs it to the transmitting unit 105. The Proximity Indication creation unit 115 does not create “Proximity Indication” when no frequency is input from the PCell selection unit 125.

  The PCell selection unit 125 of the Proximity Indication creation unit 115 confirms with the past information management unit 111 whether or not the input cell is a PCell. When the input cell is input from the past information management unit 111 that the input cell is a PCell, the PCell selection unit 125 outputs the frequency of the cell to the Proximity Indication creation unit 115. If the input cell is not a PCell, the PCell selection unit 125 does not output the frequency to the Proximity Indication creation unit 115. By doing so, it is not necessary to request the wireless communication apparatus to perform measurement settings for cells other than the PCell, so that handover to a cell (PCell) that is not intended by the wireless communication apparatus can be prevented.

  The white list management unit 117 manages the white list input from the control unit 103. The white list management unit 117 outputs a white list in response to an instruction from the CSG member determination unit 119.

  When the CSG identifier is input from the control unit 103, the CSG member determination unit 119 instructs the white list management unit 117 to output a white list. The CSG member determination unit 119 checks whether the white list input from the white list management unit 117 includes the CSG identifier input from the control unit 103. When necessary, the CSG member determination unit 119 instructs the control unit 103 to output a PLMN identifier, and uses the white list for collation with the input CSG identifier. When the CSG member determination unit 119 determines that the CSG identifier input from the control unit 103 matches the white list, the CSG member determination unit 119 outputs to the control unit 103 that the CSG identifier and the member are members. When the CSG member determination unit 119 determines that the CSG identifier input from the control unit 103 does not match the white list, the CSG member determination unit 119 outputs to the control unit 103 that the CSG identifier is not a member (non-member).

  The measurement management unit 121 outputs the measurement of the reception quality of the cell to the reception unit 101 based on the measurement setting. The measurement management unit 121 determines to send a measurement result report based on the reception quality of the cell input from the reception unit 101. When the measurement management unit 121 determines to send the measurement result report, the measurement management unit 121 outputs the reception quality of the cell input from the reception unit 101 to the measurement result report creation unit 123. In addition, the measurement management unit 121 manages the reception quality of the cell input from the reception unit 101.

  When instructed by the measurement management unit 121 to create a measurement result report, the measurement result report creation unit 123 creates a measurement result report from the received reception quality of the cell. In addition, the measurement result report creation unit 123 creates a measurement result report based on information input from the control unit 103. That is, when the measurement result report creation unit 123 receives the PCI, CGI, CSG identifier and the determination result of whether it is a member (member) or not a member (non-member) from the control unit 103, the information A report on the measurement results is also prepared. The measurement result report creation unit 123 outputs the measurement result report to the transmission unit 105.

  The transmission unit 105 transmits information input from the control unit 103, the Proximity Indication creation unit 115 of the control unit 103, and the measurement result report creation unit 123 of the control unit 103 to the connected cells.

[Configuration of Wireless Communication Device SNE1 of First Embodiment]
FIG. 3 is a block diagram of the wireless communication device SNE1 that constitutes the wireless communication system of the first embodiment. As illustrated in FIG. 3, the wireless communication device SNE1 of the first embodiment includes a wireless reception unit 151, a wireless transmission unit 153, and a control unit 155. The control unit 155 includes a measurement setting management unit 161 and a handover management unit 163.

  The radio reception unit 151 receives a response message for the individual control information transmitted from the terminal UE1, a measurement result report (Measurement Report), “Proximity Indication”, and the like, and outputs them to the control unit 155.

  The control unit 155 outputs the measurement result report (Measurement Report) received by the wireless reception unit 151 to the handover management unit 163. The control unit 155 outputs “Proximity Indication” received by the wireless reception unit 151 to the measurement setting management unit 161. The control unit 155 creates notification information and outputs it to the wireless transmission unit 153. In addition, the control unit 155 creates individual control information from an instruction from the handover management unit 163, information input from the measurement setting management unit 161, and the like, and outputs the individual control information to the wireless transmission unit 153.

  The handover manager 163 determines a handover destination cell based on the measurement result report. When supporting handover to a CSG cell or hybrid cell, the handover management unit 163 creates the individual control information in which the parameter “proximityIndicationEUTRA” is set to “Enable” in order to cause the terminal to transmit “Proximity Indication”. 155 is instructed.

  The measurement setting management unit 161 creates a measurement setting for the frequency included in “Proximity Indication” and outputs the measurement setting to the control unit 155.

  The radio transmission unit 153 transmits the individual control information and the broadcast information to the terminal UE1.

  As described above, according to the present embodiment, since the terminal UE1 transmits the “Proximity Indication” created from the PCell information, the measurement configuration (Measurement Configuration) from the radio communication device SNE1 to the SCell by “Proximity Indication”. ) Is not received. As a result, the terminal UE1 does not transmit a measurement result report for SCell to the radio communication device SNE1. Therefore, it is possible to prevent the radio communication apparatus SNE1 from determining the handover based on the measurement result report including the reception quality of the SCell and instructing the terminal UE1 to perform the handover to the PCell unintentionally.

  In the present embodiment, the terminal UE1 has been described as creating “Proximity Indication” from the PCell information. However, the terminal UE1 may consider only the PCell when creating past information. That is, the terminal UE1 creates past information (Finger Print) only for the PCell when carrier aggregation is performed using the PCell and SCell managed by the HeNB different from the radio communication device SNE1. The terminal UE1 determines from the past information that it has approached the previously connected cell. The terminal UE1 transmits “Proximity Indication” created from past information to the wireless communication device SNE1 that provides the own cell. The radio communication device SNE1 receives “Proximity Indication” from the terminal UE1, and creates a measurement configuration (Measurement Configuration) for causing the terminal UE1 to measure the frequency included in the “Proximity Indication”. Next, the radio communication device SNE1 transmits this measurement configuration (Measurement Configuration) to the terminal UE1. The terminal UE1 performs measurement based on the measurement configuration. In this way, the terminal UE1 does not receive the measurement configuration (Measurement Configuration) for the SCell from the radio communication device SNE1 by the “Proximity Indication” created from the past information. As a result, the terminal UE1 does not transmit a measurement result report for SCell to the radio communication device SNE1. Therefore, it is possible to prevent the radio communication apparatus SNE1 from determining the handover based on the measurement result report including the reception quality of the SCell and instructing the handover terminal UE1 to the PCell unintentionally.

(Second Embodiment)
A wireless communication system according to the second embodiment will be described with reference to FIGS. The wireless communication system according to the second embodiment includes a wireless communication terminal (terminal) and a wireless communication device. The terminal receives a reference signal transmitted from the wireless communication apparatus for each cell in the downlink, and reports a measurement result derived based on a predetermined calculation formula to the wireless communication apparatus. The radio communication apparatus allocates and manages radio resources (for example, a frequency band in a frequency domain or a time domain) for each terminal, and serves as an access point of a radio access network for the terminal. In addition, the wireless communication apparatus has a function of performing a handover process when it is determined that a handover to another cell is necessary based on a measurement result report from the terminal.

  When a HeNB base station that is one of the wireless communication devices manages a plurality of cells, the same CGI is used between the cells. In such a case, one cell is operated as usual, and the other cells are operated as “Cell barred (access prohibited)”. Then, the HeNB base station operates the carrier aggregation by connecting to the terminal using only the cells that are normally operated, or by setting the cells that are normally operated as PCell and the other cells as SCells. In the example shown in FIGS. 22 and 23, the HeNB base station (THeNB1) manages Cell1 (CGI = 10) of frequency f1 and Cell2 (CGI = 10) of frequency f2. In this case, Cell1 of frequency f1 is used as a PCell for carrier aggregation or a single connected cell. On the other hand, Cell2 of frequency f2 is used as an SCell for carrier aggregation or is operated as an access prohibition (barred).

  FIG. 4 is a diagram illustrating an example of a timing chart when the terminal UE1 transmits a measurement result report in the wireless communication system according to the second embodiment. As illustrated in FIG. 4, the terminal UE1 receives the measurement configuration (Measurement Configuration) of the frequency f2 from the radio communication device SNE1. When the terminal UE1 detects Cell2 and the reception quality of the Cell2 satisfies the condition for transmitting the measurement result report, the terminal UE1 transmits a measurement result report (Measurement Report) including the reception quality of the Cell2 to the radio communication device SNE1. When the Cell 2 cannot be specified, the radio communication device SNE1 transmits a measurement configuration (Measurement Configuration) instructing the reportCGI of the Cell 2 to the terminal UE1. At this time, the HeNB base station THeNB1 broadcasts the value of the parameter “Cell barred” of SIB1, which is one piece of broadcast information of Cell2, as “barred (access prohibited)”. When the terminal UE1 is instructed by the radio communication apparatus SNE1 to reportCGI of the Cell2, the terminal UE1 receives the SIB1 of the Cell2 managed by the HeNB base station THeNB1. Terminal UE1 acquires CGI contained in SIB1. Further, the terminal UE1 checks whether the value of the parameter “Cell barred” included in the SIB1 is “access prohibited (barred)”. The terminal UE1 transmits a measurement result report including a confirmation result as to whether the CGI of Cell2 and Cell2 are barred from access to the radio communication device SNE1. The measurement result report may include a CSG identifier and a “member” state. When the confirmation result of the value of the parameter “Cell barred” included in the SIB1 of Cell2 included in the measurement result report indicates that access is prohibited (barred), the wireless communication device SNE1 determines that no handover is performed to Cell2.

  Thus, in the measurement result report for reportCGI, the terminal UE1 notifies the wireless communication device SNE1 of the access prohibition (barred) confirmation result, thereby preventing the wireless communication device SNE1 from handing over the terminal UE1 to an unintended cell. be able to. Further, since it is possible to determine that the wireless communication device SNE1 does not perform handover, transmission / reception of a handover request message and a handover response message for rejecting handover can be omitted, and the network load and the wireless communication device SNE1 The processing load in HeNB base station THeNB1 can be reduced.

[Configuration of terminal UE1 of the second embodiment]
FIG. 5 is a block diagram of the terminal UE1 constituting the wireless communication system of the second embodiment. As illustrated in FIG. 5, the terminal UE1 of the second embodiment includes a reception unit 201, a control unit 203, and a transmission unit 205. The control unit 203 includes a measurement management unit 211, a measurement result report creation unit 213, a white list management unit 215, a CSG member determination unit 217, and an access prohibition determination unit 219.

  In response to an instruction from the control unit 203, the reception unit 201 receives control information such as broadcast information or individual control information via the downlink of the cell to which the terminal UE1 is connected. The receiving unit 201 outputs the received notification information, individual control information, and the like to the control unit 203. The receiving unit 201 receives a reference signal (for example, a cell reference signal (CRS)) or receives a received signal strength indication (Received Signal Strength Indication) in response to an instruction from the measurement management unit 211 of the control unit 203. RSSI) measurement. The receiving unit 201 outputs a measurement result such as the received reference signal or RSSI to the measurement management unit 211 of the control unit 203.

  The control unit 203 instructs the reception unit 201 to receive notification information or individual control information. Control information such as broadcast information or individual control information received by the receiving unit 201 is input to the control unit 203. The control unit 203 outputs the white list included in the individual control information to the white list management unit 215. When the measurement setting is included in the individual control information, the control unit 203 outputs the measurement setting to the measurement management unit 211. When reportCGI is instructed in the measurement setting, the control unit 203 instructs the receiving unit 201 to receive SIB1, which is one of broadcast information of a target cell instructed in the measurement setting. When the SIB1 corresponding to the reportCGI instruction is input, the control unit 203 outputs the CSG identifier to the CSG member determination unit 217 when the CSG identifier is included in the SIB1. When the control unit 203 is instructed to output the PLMN identifier from the white list management unit 215, the control unit 203 outputs the PLMN identifier included in the SIB1. The PLMN identifier is an identifier for identifying an operator. The control unit 203 outputs the value of the parameter “Cell barred” included in the SIB 1 to the access prohibition determination unit 219. The control unit 203 determines whether the value of “Cell barred” input from the access prohibition determination unit 219 is “barred”, the CGI included in the SIB1, and the PCI (Physical Cell Identity). The result is output to the measurement result report creation unit 213. When the CSG identifier and the “member” state are input from the CSG member determination unit 217, the control unit 203 also outputs these values together to the measurement result report creation unit 213.

  Hereinafter, each component which the control part 203 has is demonstrated.

  The white list management unit 215 manages the white list input from the control unit 203. The white list management unit 215 outputs a white list in response to an instruction from the CSG member determination unit 217.

  When the CSG identifier is input from the control unit 203, the CSG member determination unit 217 instructs the white list management unit 215 to output the white list. The CSG member determination unit 217 collates whether the CSG identifier input from the control unit 203 matches the white list input from the white list management unit 215. When necessary, the CSG member determination unit 217 instructs the control unit 203 to output a PLMN identifier, and uses the whitelist for collation with the input CSG identifier. When the CSG member determination unit 217 determines that the CSG identifier input from the control unit 203 matches the white list, the CSG member determination unit 217 outputs to the control unit 203 that the CSG identifier and the member are members. When the CSG member determination unit 217 determines that the CSG identifier input from the control unit 203 does not match the white list, the CSG member determination unit 217 outputs to the control unit 203 that the CSG identifier is not a member (non-member).

  When the value of the parameter “Cell barred” input from the control unit 203 is “barred”, the access prohibition determination unit 219 outputs to the control unit 203 that access is prohibited (barred). When the value of the parameter “Cell barred” input from the control unit 203 is “not barred”, the access prohibition determination unit 219 outputs that the control unit 203 is accessible (not barred).

  The measurement management unit 211 outputs the measurement of the reception quality of the cell to the reception unit 201 based on the measurement setting. The measurement management unit 211 determines to send a measurement result report based on the reception quality of the cell input from the reception unit 201. When the measurement management unit 211 determines to send the measurement result report, the measurement management unit 211 outputs the reception quality of the cell input from the reception unit 201 to the measurement result report creation unit 213. The measurement management unit 211 manages the reception quality of the cell input from the reception unit 201.

  When instructed by the measurement management unit 211 to create a measurement result report, the measurement result report creation unit 213 creates a measurement result report from the received reception quality of the cell. Further, when the PCI, CGI, and access prohibition (barred) confirmation results are input from the control unit 203, the measurement result report creation unit 213 creates a measurement result report from the information. Note that when a CSG identifier and information indicating the state of “member” are input together from the control unit 203, the measurement result report creation unit 213 creates a measurement result report including those values. The measurement result report creation unit 213 outputs the measurement result report to the transmission unit 205.

  The transmission unit 205 transmits information input from the control unit 203 and the measurement result report creation unit 213 of the control unit 203 to the connected cell.

[Operation Flowchart of Terminal UE1 of Second Embodiment]
FIG. 6 is a flowchart showing an example of the operation of the terminal UE1 in the second embodiment. The terminal UE1 receives a measurement configuration (Measurement Configuration) from the wireless communication device SNE1 (step S201). Next, the terminal UE1 measures the reception quality of the cell according to the measurement setting instruction (step S202). Next, the terminal UE1 determines whether or not the measured reception quality of the cell satisfies the condition for reporting the measurement result report (step S203), and if the condition is satisfied, the process proceeds to step S204. In step S204, the terminal UE1 creates a measurement result report from the reception quality of the cell that satisfies the condition for reporting the measurement result report, and transmits the measurement result report to the radio communication device SNE1. Next, the terminal UE1 receives a measurement setting indicating a reportCGI of a specific cell from the wireless communication device SNE1 (step S205). A specific cell is indicated by a physical cell identifier (PCI).

  Next, the terminal UE1 receives SIB1 of the cell instructed for reportCGI (step S206). Next, the terminal UE1 checks whether or not the value of the parameter “Cell barred” included in the received SIB1 indicates access prohibition (barred) (step S207). If the value of the parameter “Cell barred” included in the received SIB1 indicates that access is prohibited (barred), the process proceeds to step S208. If the value indicates that access is possible (not barred), the process proceeds to step S209.

  In step S208, the terminal UE1 creates a measurement result report including the PCI of the cell for which reportCGI is instructed, the CGI included in the SIB1, and that the cell is barred. On the other hand, in step S209, the terminal UE1 creates a measurement result report including the PCI of the cell for which reportCGI is instructed, the CGI included in the SIB1, and that the cell is accessible (not barred). Information indicating whether access is prohibited (barred) or accessible (not barred) included in the measurement result report may be indicated by 1 bit. After step S208 or step S209, the terminal UE1 transmits a measurement result report to the radio communication device SNE1 (step S210).

  In addition, when the CIB identifier is included in the SIB1 in which the report CGI is instructed and received, the terminal UE1 collates the CSG identifier with the whitelist, and the measurement result report includes the CSG identifier and the state of “member”. May be.

[Configuration of Wireless Communication Device SNE1 of Second Embodiment]
FIG. 7 is a block diagram of the wireless communication device SNE1 that constitutes the wireless communication system of the second embodiment. As illustrated in FIG. 7, the wireless communication device SNE1 of the second embodiment includes a wireless reception unit 251, a network reception unit 253, a network transmission unit 255, a wireless transmission unit 257, and a control unit 259. Prepare. The control unit 259 includes a measurement setting management unit 261 and a handover management unit 263. Note that the handover management unit 263 includes an access prohibition determination unit 265.

  The radio reception unit 251 receives a response message for the individual control information transmitted from the terminal UE1, a measurement result report (Measurement Report), and the like, and outputs the response message to the control unit 259.

  The network receiving unit 253 receives a handover response message and outputs it to the control unit 259.

  The network transmission unit 255 transmits a handover request message.

  The control unit 259 outputs the measurement result report (Measurement Report) received by the wireless reception unit 251 to the handover management unit 263. The control unit 259 creates notification information and outputs it to the wireless transmission unit 257. In addition, the control unit 259 creates individual control information from an instruction from the handover management unit 263, information input from the measurement setting management unit 261, and the like, and outputs the individual control information to the wireless transmission unit 257.

  If the cell cannot be identified from the measurement result report, the handover management unit 263 instructs the measurement setting management unit 261 to create a measurement setting for reporting the CGI of the cell. If the cell can be identified from the measurement result report, the handover management unit 263 determines whether to perform handover to the cell. When the handover management unit 263 determines to perform handover to the cell, when the CSG identifier and member information for the cell are included in the measurement result report, the handover management unit 263 creates a handover request message including the information, It outputs to network transmission section 255 so as to transmit a handover request message to HeNB base station THeNB1 managing the cell. At this time, the handover management unit 263 outputs the value of the parameter “Cell barred” included in the measurement result report to the access prohibition determination unit 265. When the information indicating that access is prohibited (barred) is input to the cell from the access prohibition determination unit 265, the handover management unit 263 determines that the handover to the cell is not performed. In addition, when “non-member” is notified in the measurement result report from the terminal UE1, the handover management unit 263 does not perform handover when the handover destination cell is determined as a CSG cell by the PCI delimiter (PCI Range). Judge.

  In addition, when the handover response message includes an instruction to approve the handover, the handover management unit 263 outputs the handover command included in the handover response message to the control unit 259 for transmission to the terminal UE1. On the other hand, when the handover response message includes an instruction not to approve the handover, the handover management unit 263 switches to handover to a cell other than the currently connected cell or maintains the connection to the cell.

  If the value of the parameter “Cell barred” input from the handover management unit 263 indicates access prohibition (barred), the access prohibition determination unit 265 performs handover of information indicating that access to the cell is prohibited (barred). The data is output to the management unit 263.

  The measurement setting management unit 261 creates a measurement setting and outputs it to the control unit 259. In addition, the measurement setting management unit 261 creates a measurement setting in response to an instruction from the handover management unit 263 and outputs the measurement setting to the control unit 259.

  The radio transmission unit 257 transmits the individual control information and the broadcast information to the terminal UE1.

[Configuration of HeNB Base Station THeNB1 of Second Embodiment]
FIG. 8 is a block diagram of the HeNB base station THeNB1 constituting the wireless communication system of the second embodiment. As illustrated in FIG. 8, the HeNB base station THeNB1 of the second embodiment includes a radio reception unit 281, a network reception unit 283, a network transmission unit 285, a radio transmission unit 287, and a control unit 289. Prepare. The control unit 289 includes a broadcast information management unit 291 and a handover management unit 293.

  The radio reception unit 281 receives a response message to the individual control information transmitted from the terminal UE1, a measurement result report (Measurement Report), and the like, and outputs the response message to the control unit 289.

  The network receiving unit 283 receives a handover request message and outputs it to the control unit 289.

  The network transmission unit 285 transmits a handover response message.

  The control unit 289 outputs the handover request message input from the network reception unit 283 to the handover management unit 293. The control unit 289 notifies the broadcast information management unit 291 that the cell is operated as an access prohibition when the cell is operated as an access prohibition (barred) or is used only as a carrier aggregation SCell.

  When the broadcast information management unit 291 receives from the control unit 289 that the cell is to be operated as access prohibited, the broadcast information management unit 291 broadcasts the value of the parameter “Cell barred” of SIB1, which is one of the broadcast information, as access prohibited (barred). Create information. The broadcast information management unit 291 outputs the created broadcast information to the wireless transmission unit 287.

  The handover management unit 293 confirms the content of the handover request message input from the control unit 289. When the CSG identifier and member information are included in the message, the handover management unit 293 accepts the handover based on the information. Determine whether. When operating as a CSG cell, the handover management unit 293 does not accept a handover if a CSG identifier that does not belong to the CSG managed by the handover management unit 293 is included. Further, when operating as a CSG cell, the handover management unit 293 does not accept a handover if an instruction “non-member” is instructed. When it is determined that the handover is not accepted (not approved), the handover management unit 293 creates a handover response message including not approving the handover and outputs the handover response message to the network transmission unit 285. On the other hand, when the handover management unit 293 determines to approve the handover, the handover management unit 293 creates a handover response message including a handover command addressed to the terminal UE1, and outputs the handover response message to the network transmission unit 285. The handover management unit 293 determines whether to accept the handover in consideration of the state of its own radio resource.

  The radio transmission unit 287 transmits individual control information and broadcast information to the terminal UE1.

  As described above, according to the present embodiment, in the measurement result report for reportCGI, the terminal UE1 notifies the wireless communication device SNE1 of the access prohibition (barred) confirmation result, so that the wireless communication device SNE1 notifies the terminal UE1. It is possible to prevent handover to an unintended cell.

  In the present embodiment, the parameter “Cell barred” is provided in the measurement result report to notify the cell access prohibition (barred). However, the access prohibition (barred) may be notified by another method. . For example, in the measurement result report for reportCGI, using a parameter for notifying the result of determination as to whether or not the cell is a member of the CSG cell, as shown in FIG. In the case of prohibition (barred), notify that it is not a member (non-member).

  FIG. 9 is a diagram illustrating another example of a timing chart when the terminal UE1 transmits a measurement result report in the wireless communication system according to the second embodiment. The terminal UE1 receives the measurement configuration (Measurement Configuration) of the frequency f2 from the radio communication device SNE1. When the terminal UE1 detects Cell2 and the reception quality of the Cell2 satisfies the condition for transmitting the measurement result report, the terminal UE1 transmits a measurement result report (Measurement Report) including the reception quality of the Cell2 to the radio communication device SNE1. When the Cell 2 cannot be specified, the radio communication device SNE1 transmits a measurement configuration (Measurement Configuration) instructing the reportCGI of the Cell 2 to the terminal UE1. At this time, the HeNB base station THeNB1 broadcasts the value of the parameter “Cell barred” of SIB1, which is one piece of broadcast information of Cell2, as access prohibition (barred). When the terminal UE1 is instructed by the radio communication apparatus SNE1 to reportCGI of the Cell2, the terminal UE1 receives the SIB1 of the Cell2 managed by the HeNB base station THeNB1. Terminal UE1 acquires CGI contained in SIB1. Further, the terminal UE1 checks whether the value of the parameter “Cell barred” included in the SIB1 is “access prohibited (barred)”. When the terminal UE1 confirms that the Cell2 is inaccessible (barred), the terminal UE1 transmits a measurement result report including the CGI of the Cell2 and the terminal UE1 not being a member of the CSG cell (non-member) to the radio communication device SNE1. When the measurement result report includes that the “CSG cell is not a member (non-member)” and the radio communication device SNE1 determines that the cell is a CSG due to a PCI delimiter, the radio communication device SNE1 determines that no handover is performed to Cell2. The wireless communication device SNE1 transmits a handover request message including a CSG identifier and not being a member (non-member) to the HeNB base station THeNB1, so that a network node such as an MME or HeNB GW performs a handover. Even if it is determined not to be performed, it may be determined that the HeNB base station THeNB1 does not perform handover. In this way, it is possible to prevent the radio communication device SNE1 from handing over the terminal UE1 to an unintended cell without changing the conventional message configuration. Also, the HeNB base station THeNB1 may set the PCI of Cell2 to a value that can be determined as a CSG cell by PCI delimitation so that the radio communication apparatus SNE1 can determine that Cell2 is a CSG cell. In this way, since it can be determined that no handover is performed in the radio communication device SNE1, the amount of signaling transmitted and received in the network can be reduced, and the processing load on the radio communication device SNE1 and the HeNB base station THeNB1 is reduced. can do.

(Third embodiment)
A wireless communication system according to the third embodiment will be described with reference to FIGS. The wireless communication system of the third embodiment is different from the wireless communication system of the second embodiment in that the CSG identifier included in the SIB1 by the HeNB base station THeNB1 is a fake CSG identifier. Except for this point, the second embodiment is the same as the second embodiment, and the description of the same or equivalent parts as the second embodiment is simplified or omitted.

  FIG. 10 is a diagram illustrating an example of a timing chart when the terminal UE1 transmits a measurement result report in the wireless communication system according to the third embodiment. The terminal UE1 receives the measurement configuration (Measurement Configuration) of the frequency f2 from the radio communication device SNE1. When the terminal UE1 detects Cell2 and the reception quality of the Cell2 satisfies the condition for transmitting the measurement result report, the terminal UE1 transmits a measurement result report (Measurement Report) including the reception quality of the Cell2 to the radio communication device SNE1. When the Cell 2 cannot be specified, the radio communication device SNE1 transmits a measurement configuration (Measurement Configuration) instructing the reportCGI of the Cell 2 to the terminal UE1. At this time, the HeNB base station THeNB1 differs from the actual CSG identifier in that the CSG identifier included in the SIB1 that is one of the broadcast information of Cell2 is not used in the HeNB base station THeNB1, and “false CSG identifier (dummy CSG ID) ”. When the terminal UE1 is instructed by the radio communication apparatus SNE1 to reportCGI of the Cell2, the terminal UE1 receives the SIB1 of the Cell2 managed by the HeNB base station THeNB1. Terminal UE1 acquires CGI contained in SIB1. Also, the terminal UE1 collates the CSG identifier included in the SIB1 with the white list held by itself, and determines whether or not it is a member of the CSG cell. The terminal UE1 transmits a measurement result report including the CGI of Cell2 and the CSG identifier (dummy CSG ID) included in the SIB1 and the determination result of whether or not it is a member of the CSG cell to the radio communication device SNE1. . Since the CSG identifier included in SIB1 is a false CSG identifier (dummy CSG ID), terminal UE1 determines that it is not a member of the CSG cell (non-member) as a result of collation with the whitelist. Get. The radio communication device SNE1 transmits a handover request message including the CGI of the Cell2 included in the measurement result report, the CSG identifier, and a non-member to the HeNB base station THENB1. The HeNB base station THeNB1 rejects the handover because the value of the parameter “CSG identifier” included in the handover request message is a fake CSG identifier (dummy CSG ID). The HeNB base station THeNB1 transmits a response message indicating handover rejection to the radio communication device SNE1.

  The HeNB base station THeNB1 may determine which cell is based on the value of the CSG identifier (false CSG identifier) included in the handover request message by changing the value of the false CSG identifier for each cell. In this case, since the HeNB base station THeNB1 can determine which cell the handover request is for, it determines whether to accept the handover to the cell. When accepting a handover to Cell2, the HeNB base station THeNB1 transmits a handover response message including a handover command to the cell to the radio communication device SNE1.

  Note that the network may manage the value of the false CSG identifier, and set a value not included in the white list of all terminals as the “dummy CSG identifier (dummy CSG ID)”. In this way, when the wireless communication device SNE1 includes a false CSG identifier in the measurement result report, it can be determined that a handover to the cell is not performed. Here, all terminals may be interpreted as all terminals in the PLMN. Further, all terminals may be interpreted as all terminals in the PLMN that manages the HeNB base station THeNB1.

  Even if it is determined that the network node via the handover request message transmitted from the wireless communication device SNE1, for example, the MME or the HeNB GW is not a fake CSG identifier or a non-member, the handover is not performed. Good. Since the CSG identifier included in the handover request is a fake CSG identifier, the HeNB base station THeNB1 can determine that the handover request is for a cell other than Cell1. Therefore, it is possible to prevent radio communication apparatus SNE1 from handing over terminal UE1 to an unintended cell.

  Note that the HeNB base station THeNB1 may set the CSG instruction to be included in the SIB1 to true, and may not include any CSG identifier in the SIB1. Even in this case, similarly to the above, it is possible to prevent the radio communication device SNE1 from handing over the terminal UE1 to an unintended cell.

  In addition, when the determination result of whether it is a member of a CSG cell (member) included in the measurement result report from the terminal UE1 is “non-member”, the radio communication device SNE1 has to hand over to Cell2. You may judge. As described above, in the measurement result report for reportCGI, by notifying that the CSG cell is not a member (non-member), it is possible to prevent the radio communication device SNE1 from handing over the terminal UE1 to an unintended cell.

[Configuration of terminal UE1 of the third embodiment]
FIG. 11 is a block diagram of the terminal UE1 configuring the wireless communication system according to the third embodiment. As illustrated in FIG. 11, the terminal UE1 of the third embodiment includes a reception unit 301, a control unit 303, and a transmission unit 305. The control unit 303 includes a measurement management unit 311, a measurement result report creation unit 313, a white list management unit 315, and a CSG member determination unit 317.

  In response to an instruction from the control unit 303, the reception unit 301 receives control information such as broadcast information or individual control information via the downlink of the cell to which the terminal UE1 is connected. The receiving unit 301 outputs the received notification information, individual control information, and the like to the control unit 303. The receiving unit 301 receives a reference signal (for example, a cell reference signal (CRS)) or receives a received signal strength indication (Received Signal Strength Indication) in accordance with an instruction from the measurement management unit 311 of the control unit 303. RSSI) measurement. The reception unit 301 outputs the received reference signal or measurement result such as RSSI to the measurement management unit 311 of the control unit 303.

  The control unit 303 instructs the reception unit 301 to receive notification information or individual control information. Control information such as broadcast information or individual control information received by the reception unit 301 is input to the control unit 303. The control unit 303 outputs the white list included in the individual control information to the white list management unit 315. When the individual control information includes measurement settings, the control unit 303 outputs the measurement settings to the measurement management unit 311. When reportCGI is instructed in the measurement setting, the control unit 303 instructs the receiving unit 301 to receive SIB1, which is one piece of broadcast information of a target cell instructed in the measurement setting. When the SIB1 corresponding to the reportCGI instruction is input, the control unit 303 outputs the CSG identifier to the CSG member determination unit 317 when the CSG identifier is included in the SIB1. When the control unit 303 is instructed to output the PLMN identifier from the whitelist management unit 315, the control unit 303 outputs the PLMN identifier included in the SIB1. The PLMN identifier is an identifier for identifying an operator. The control unit 303 sets the CSG identifier input from the CSG member determination unit 307, the state of “member” (that is, the determination result of whether it is a member (member) or not a member (non-member)), and SIB1. The included CGI and PCI (Physical Cell Identity) are output to the measurement result report creation unit 313.

  Hereinafter, each component which the control part 303 has is demonstrated.

  The white list management unit 315 manages the white list input from the control unit 303. The white list management unit 315 outputs a white list in response to an instruction from the CSG member determination unit 317.

  When the CSG identifier is input from the control unit 303, the CSG member determination unit 317 instructs the white list management unit 315 to output the white list. The CSG member determination unit 317 checks whether the white list input from the white list management unit 315 includes the CSG identifier input from the control unit 303. When necessary, the CSG member determination unit 317 instructs the control unit 303 to output a PLMN identifier, and uses the white list for input CSG identifier verification. When the CSG member determination unit 317 determines that the CSG identifier input from the control unit 303 matches the white list, the CSG member determination unit 317 outputs to the control unit 303 that the CSG identifier and the member are members. When the CSG member determination unit 317 determines that the CSG identifier input from the control unit 303 does not match the white list, the CSG member determination unit 317 outputs to the control unit 303 that the CSG identifier is not a member (non-member).

  The measurement management unit 311 outputs the reception quality measurement of the cell to the reception unit 301 based on the measurement setting. The measurement management unit 311 determines to send a measurement result report based on the reception quality of the cell input from the reception unit 301. When the measurement management unit 311 determines to send the measurement result report, the measurement management unit 311 outputs the reception quality of the cell input from the reception unit 301 to the measurement result report creation unit 313. In addition, the measurement management unit 311 manages the reception quality of the cell input from the reception unit 301.

  When instructed by the measurement management unit 311 to create a measurement result report, the measurement result report creation unit 313 creates a measurement result report from the received reception quality of the cell. When the measurement result report creation unit 313 receives a PCI, CGI, CSG identifier, and a determination result as to whether or not the member is a member from the control unit 303, the measurement result report creation unit 313 creates a measurement result report. The measurement result report creation unit 313 outputs the measurement result report to the transmission unit 305.

  The transmission unit 305 transmits the information input from the control unit 303 and the measurement result report creation unit 313 of the control unit 303 to the connected cell.

[Configuration of Wireless Communication Device SNE1 of Third Embodiment]
FIG. 12 is a block diagram of a wireless communication device SNE1 that constitutes the wireless communication system of the third embodiment. As shown in FIG. 12, the wireless communication device SNE1 of the third embodiment includes a wireless reception unit 351, a network reception unit 353, a network transmission unit 355, a wireless transmission unit 357, and a control unit 359. Prepare. The control unit 359 includes a measurement setting management unit 361 and a handover management unit 363.

  The radio reception unit 351 receives a response message for the individual control information transmitted from the terminal UE1, a measurement result report (Measurement Report), and the like, and outputs the response message to the control unit 359.

  The network receiving unit 353 receives a handover response message and outputs it to the control unit 359.

  The network transmission unit 355 transmits a handover request message.

  The control unit 359 outputs the measurement result report (Measurement Report) received by the wireless reception unit 351 to the handover management unit 363. The control unit 359 creates notification information and outputs it to the wireless transmission unit 357. In addition, the control unit 359 creates individual control information from an instruction from the handover management unit 363, information input from the measurement setting management unit 361, and the like, and outputs the individual control information to the wireless transmission unit 357. When receiving the handover response message, the control unit 359 outputs the handover response message to the handover management unit 363.

  When the cell cannot be identified from the measurement result report, the handover management unit 363 instructs the measurement setting management unit 361 to create a measurement setting for reporting the CGI of the cell. When the cell can be identified from the measurement result report, the handover management unit 363 determines whether to perform handover to the cell. When the handover management unit 363 determines to perform handover to the cell, when the CSG identifier and member information for the cell are included in the measurement result report, the handover management unit 363 creates a handover request message including the information, It outputs to the transmission part 355 for networks so that it may transmit to HeNB base station THeNB1 which manages a cell. Further, when “non-member” is notified in the measurement result report from the terminal, the handover management unit determines that the handover is not performed when the handover destination cell is determined as the CSG cell by the PCI delimiter (PCI Range). To do.

  Further, when the handover response message includes an instruction to approve the handover, the handover management unit 363 outputs the handover command included in the handover response message to the control unit 359 to transmit to the terminal UE1. On the other hand, when the handover response message includes an instruction not to approve the handover, the handover management unit 363 switches to handover to a cell other than the currently connected cell or maintains the connection to the cell.

  The measurement setting management unit 361 creates a measurement setting and outputs it to the control unit 359. In addition, the measurement setting management unit 361 creates a measurement setting in response to an instruction from the handover management unit 363 and outputs the measurement setting to the control unit 359.

  The radio transmission unit 357 transmits the individual control information and the broadcast information to the terminal UE1.

[Configuration of HeNB Base Station THeNB1 of Third Embodiment]
FIG. 13 is a block diagram of the HeNB base station THeNB1 constituting the wireless communication system of the third embodiment. As illustrated in FIG. 13, the HeNB base station THeNB1 of the third embodiment includes a radio reception unit 381, a network reception unit 383, a network transmission unit 385, a radio transmission unit 387, and a control unit 389. Prepare. The control unit 389 includes a broadcast information management unit 391 and a handover management unit 393. The handover management unit 393 includes a CSG identifier determination unit 395.

  The radio reception unit 381 receives a response message for the individual control information transmitted from the terminal UE1, a measurement result report (Measurement Report), and the like, and outputs the response message to the control unit 389.

  The network receiving unit 383 receives a handover request message and outputs it to the control unit 389.

  The network transmission unit 385 transmits a handover response message.

  The control unit 389 outputs the handover request message input from the network reception unit 383 to the handover management unit 393. When it is necessary for the control unit 389 to know from which cell the handover is performed, the broadcast information management is performed so that a cell other than one cell includes a CSG identifier (false CSG identifier) of a CSG to which the cell does not belong. Notification to the unit 391.

  When instructed by the control unit 389 to include a fake CSG identifier, the broadcast information management unit 391 sets “fake CSG identifier (dummy CSG ID)” to the parameter “CSG identifier” of SIB1, which is one piece of broadcast information. Create broadcast information. The broadcast information management unit 391 outputs the created broadcast information to the wireless transmission unit 387. Note that the broadcast information management unit 391 may set a false CSG identifier that is different for each cell in the parameter “CSG identifier”.

  The handover management unit 393 confirms the content of the handover request message input from the control unit 389, and when the CSG identifier and member information are included in the message, the CSG identifier is sent to the CSG identifier determination unit 395. Output. If the CSG identifier is determined to be a fake CSG identifier by the CSG identifier determination unit 395, the handover management unit 393 rejects the handover. In addition, when operating as a CSG cell, the handover management unit 393 does not accept a handover if the handover request message indicates “non-member”. When the handover management unit 393 determines to approve the handover, the handover management unit 393 creates a handover response message including a handover command addressed to the terminal UE1 and outputs the handover response message to the network transmission unit 385. On the other hand, when determining that the handover is not approved, the handover management unit 393 creates a handover response message including not approving the handover and outputs the handover response message to the network transmission unit 385. In addition, the handover management unit 393 may accept the handover to the cell when identifying the cell to which the handover is made based on the false CSG identifier and determining that the terminal UE1 can be accepted. Note that the handover management unit 393 determines whether to accept the handover in consideration of the state of its own radio resource.

  The CSG identifier determination unit 395 checks whether the CSG identifier input from the handover management unit 393 is a fake CSG identifier. If the CSG identifier determination unit 395 determines that the value of the parameter “CSG identifier” is a fake CSG identifier, the CSG identifier determination unit 395 outputs a fake CSG identifier to the handover management unit 393.

  The radio transmission unit 387 transmits individual control information and broadcast information to the terminal UE1.

[Operation Flowchart of HeNB Base Station THeNB1 of Third Embodiment]
FIG. 14 is a flowchart illustrating an example of the operation of the HeNB base station THeNB1 in the third embodiment. The HeNB base station THeNB1 broadcasts the SIB1 in which the value of the parameter “CSG identifier” is set as a fake CSG identifier (dummy CSG ID) in a cell operated as an access prohibition (cell operated as a SCell) (step S301). Next, the HeNB base station THeNB1 receives a handover request message from the radio communication device SNE1 (step S302).

  Next, the HeNB base station THeNB1 determines whether or not the value of the parameter “CSG identifier” included in the handover request message is a fake CSG identifier (dummy CSG ID) (step S303). The process proceeds to S304, and if it is a false CSG identifier, the process proceeds to Step S307. In step S304, the HeNB base station THeNB1 determines whether or not to accept the handover. If accepted, the process proceeds to step S305. If not accepted, the process proceeds to step S307.

  In step S305, the HeNB base station THeNB1 creates a handover response message including a handover command for performing handover to a cell determined to accept handover. In step S307, the HeNB base station THeNB1 creates a handover response message indicating that the handover is not accepted. After performing Step S305 or Step S307, the HeNB base station THeNB1 transmits a handover response message to the radio communication device SNE1 (Step S306).

  Note that the HeNB base station THeNB1 may accept the handover to the cell when it is possible to identify the cell to which the handover is to be made based on the false CSG identifier and to accept the terminal UE1.

  As described above, according to the present embodiment, the parameter “CSG identifier” included in the SIB1 transmitted from the HeNB base station THeNB1 to the terminal UE1 includes a false CSG identifier (dummy CSG) that is not used in the HeNB base station THeNB1. ID) is set, the HeNB base station THeNB1 determines that the handover is not approved even if there is a handover request from the radio communication device SNE1. Therefore, it is possible to prevent radio communication apparatus SNE1 from handing over terminal UE1 to an unintended cell.

  In the present embodiment, the HeNB base station THeNB1 has shown a method of reporting a false CSG identifier in broadcast information of a cell that does not accept a handover. However, instead of broadcasting a false CSG identifier, the HeNB base station THeNB1 broadcasts a false CGI identifier. It may be. The fake CGI is a value different from the HeNB identifier used when establishing the S1 interface. The HeNB base station THeNB1 notifies the radio communication apparatus SNE1 of information that allows the radio communication apparatus SNE1 to specify a cell that does not accept handover by a measurement result report from the terminal UE1. The information may be anything as long as the wireless communication device SNE1 can determine whether the cell does not accept a handover based on a measurement result report from the terminal UE1. For example, a fake CGI / PCI pair or a fake CGI / frequency pair may be used. Further, the false CGI may be determined by the HeNB base station THeNB1, or may be determined by the network and notified to the HeNB base station THeNB1. The HeNB base station THeNB1 broadcasts a false CGI in a cell that does not accept a handover. The terminal UE1 transmits a measurement result report including a fake CGI of a cell that does not accept a handover to the radio communication device SNE1. If the wireless communication device SNE1 determines that it is a fake CGI from the received measurement result report, the wireless communication device SNE1 does not perform handover to the cell. When the wireless communication device SNE1 can determine another cell that the HeNB base station THeNB1 accepts from the false CGI, the wireless communication device SNE1 may perform handover to the other cell. By doing in this way, it can prevent that radio | wireless communication apparatus SNE1 transmits the hand-over request message with respect to the cell which HeNB base station THeNB1 does not accept a hand-over. Moreover, HeNB base station THHeNB1 may set the parameter "Cell barred" of the alerting | reporting information of the cell which does not accept a handover to access prohibition (barred). By doing so, it is possible to avoid an idle terminal from connecting to a cell operated as an access prohibition. This method can also be used when the HeNB base station THeNB1 is operating in an open cell.

(Fourth embodiment)
A wireless communication system according to the fourth embodiment will be described with reference to FIGS. The wireless communication system according to the fourth embodiment includes a wireless communication terminal (terminal) and a wireless communication device. The terminal receives a reference signal transmitted from the wireless communication apparatus for each cell in the downlink, and reports a measurement result derived based on a predetermined calculation formula to the wireless communication apparatus. The radio communication apparatus allocates and manages radio resources (for example, a frequency band in a frequency domain or a time domain) for each terminal, and serves as an access point of a radio access network for the terminal. In addition, the wireless communication apparatus has a function of performing a handover process when it is determined that a handover to another cell is necessary based on a measurement result report from the terminal.

  FIG. 15 is a diagram illustrating an example of a timing chart when the terminal UE1 transmits a measurement result report in the fourth wireless communication system. As illustrated in FIG. 15, the terminal UE1 uses past information (Finger) when performing cell aggregation using Cell1 of the frequency f1 managed by the HeNB base station THeNB1 as PCell and Cell2 of the frequency f2 as SCell. Print). Note that the terminal UE1 may create past information only when the cell provided by the HeNB base station THeNB1 is a CSG cell or a hybrid cell. In the terminal UE1, the connected wireless communication device SNE1 supports “Proximity Indication” by an individual control signal (for example, “RRC Connection Reconfiguration”) (for example, a parameter “ProximityIndicationEUTRA” included in “RRC Connection Reconfiguration”) Is set to true (TRUE), it is determined whether or not the previously connected cell is approached based on the past information. Note that the previously connected cell is a cell to which the terminal UE1 is allowed to connect. When the terminal UE1 determines that it has approached the previously connected cell, it refers to the past information, and information that the frequency f1 is a frequency used for PCell and information that the frequency f2 is a frequency used for SCell. “Proximity Indication” including is generated and transmitted to the wireless communication device SNE1.

  The wireless communication device SNE1 receives “Proximity Indication” from the terminal UE1, and creates a measurement configuration (Measurement Configuration) for causing the terminal UE1 to measure the frequency included in this “Proximity Indication”. At this time, the radio communication device SNE1 creates a measurement setting for the PCell frequency f1, and the reception quality at the frequency f2 is the highest when the terminal UE1 creates a measurement result report at the PCell frequency f1 based on this measurement setting. An instruction to include the reception quality of the good cell (best cell) in the measurement result report is included in the measurement setting. Next, the radio communication device SNE1 transmits the created measurement configuration (Measurement Configuration) to the terminal UE1.

  The terminal UE1 performs measurement based on the measurement configuration. When terminal UE1 detects Cell1 and the reception quality of Cell1 satisfies the condition for sending a measurement result report, terminal UE1 transmits a measurement result report including the reception quality of Cell1 and the reception quality of the best cell of frequency f2 to radio communication apparatus SNE1. To do. In the example shown in FIG. 15, the best cell of frequency f2 is Cell2. The radio communication apparatus SNE1 includes a measurement result report in a handover request message (Handover Request) and transmits it to the HeNB base station THeNB1. When the best cell of the frequency f2 is Cell2, the HeNB base station THeNB1 transmits a handover response message (Handover Response) including a carrier aggregation setting in which Cell1 is PCell and Cell2 is SCell to the radio communication device SNE1. The radio communication device SNE1 transmits a handover command included in the handover response message to the terminal UE1.

  Thus, since the HeNB base station THeNB1 can correctly determine the cell indicated by the CGI included in the handover request message based on the measurement result report (Measurement Report) information included in the handover request message, the radio communication device SNE1 The terminal UE1 can be instructed to perform handover to the correct cell. Also, since the terminal UE1 can simultaneously acquire information on cells as SCell candidates, it can start carrier aggregation immediately after handover.

[Configuration of terminal UE1 of the fourth embodiment]
FIG. 16 is a block diagram of a terminal UE1 constituting the wireless communication system of the fourth embodiment. As illustrated in FIG. 16, the terminal UE1 of the fourth embodiment includes a reception unit 401, a control unit 403, and a transmission unit 405. The control unit 403 includes a past information management unit 411, a Proximity detection unit 413, a Proximity Indication creation unit 415, a white list management unit 417, a CSG member determination unit 419, a measurement management unit 421, and a measurement result report creation unit. 423. Note that the Proximity Indication creation unit 415 includes a PCell / SCell determination unit 425.

  In response to an instruction from the control unit 403, the reception unit 401 receives control information such as broadcast information or individual control information via the downlink of the cell to which the terminal UE1 is connected. The receiving unit 401 outputs the received notification information, individual control information, and the like to the control unit 403. In addition, the reception unit 401 receives a reference signal (for example, a cell reference signal (CRS)) or receives a received signal strength indication (Received Signal Strength Indication) according to an instruction from the measurement management unit 421 of the control unit 403. RSSI) measurement. The receiving unit 401 outputs the received reference signal or measurement result such as RSSI to the measurement management unit 421 of the control unit 403.

  The control unit 403 instructs the receiving unit 401 to receive notification information or individual control information. Control information such as broadcast information or individual control information received by the receiving unit 401 is input to the control unit 403. When the individual control information includes the measurement setting, the control unit 403 outputs the measurement setting to the measurement management unit 421. When reportCGI is instructed in the measurement setting, the control unit 403 instructs the receiving unit 401 to receive SIB1, which is one piece of broadcast information of a target cell instructed in the measurement setting. When the SIB1 corresponding to the reportCGI instruction is input and the CIB identifier is included in the SIB1, the control unit 403 outputs the CSG identifier to the CSG member determination unit 419. When the control unit 403 is instructed to output the PLMN identifier from the whitelist management unit 417, the control unit 403 outputs the PLMN identifier included in the SIB1. The PLMN identifier is an identifier for identifying an operator. The control unit 403 outputs the CGI and PCI (Physical Cell Identity) included in the SIB 1 to the measurement result report creation unit 423. The control unit 403 receives the CSG identifier and the member status (that is, the determination result of whether the member is (member) or not (non-member)) from the CSG member determination unit 419. Are output to the measurement result report creation unit 423 together.

  The control unit 403 instructs the past information management unit 411 to create past information (Finger Print) when the SIB1 includes a CSG identifier, that is, when connected to a CSG cell or a hybrid cell. If the parameter “proximityIndicationEUTRA” indicating whether or not to transmit “Proximity Indication” is set to “Enable” in the individual control information (RRC Connection Reconfiguration), the control unit 403 should send “Proximity Indication”. The Proximity detection unit 413 is notified so as to make a determination. When receiving the individual control information, the control unit 403 creates a response message and outputs the response message to the transmission unit 405.

  Hereinafter, each component which the control part 403 has is demonstrated.

  When instructed by the control unit 403 to create past information (Finger Print), the past information management unit 411 creates past information (Finger Print) from the connected cells. The past information management unit 411 manages, for example, connected cells, information on adjacent cells, frequency information, and the like together. Further, the past information management unit 411 distinguishes and holds whether the connected cell is a PCell (Primary Cell) or a carrier aggregation SCell (Secondary Cell). In addition, the cell connected independently is managed as PCell. The past information management unit 411 outputs the held information to the Proximity detection unit 413 in response to the notification from the Proximity detection unit 413. When the past information management unit 411 asks the PCell / SCell determination unit 425 whether the cell is a PCell or a SCell, the past information management unit 411 notifies whether the cell is a PCell or a SCell.

  When notified from the control unit 403 to determine whether to send “Proximity Indication”, the Proximity detection unit 413 notifies the past information management unit 411 to output information managed. The Proximity detection unit 413 detects whether the CSG cell or the hybrid cell is approached based on the past information input from the past information management unit 411 or the status of surrounding cells, for example. When the Proximity detection unit 413 detects that the CSG cell or hybrid cell described in the past information is approaching, the Proximity detection unit 413 instructs the Proximity Indication creation unit 415 to create “Proximity Indication” corresponding to the detected CSG cell or hybrid cell.

  The Proximity Indication creating unit 415 outputs the information on the CSG cell or hybrid cell instructed from the Proximity detecting unit 413 to the PCell / SCell determining unit 425 of the Proximity Indication creating unit 415. When the Proximity Indication creating unit 415 outputs that the PCell is a PCell from the PCell / SCell determining unit 425, the Proximity Indication creating unit 415 includes “Proximity” including information that the frequency is the PCell frequency and information on the frequency of the SCell corresponding to the PCell. Indication "is generated and output to the transmission unit 405. When the Proximity Indication creating unit 415 outputs that the Sell is a SCell from the PCell / SCell determining unit 425, the Proximity Indication creating unit 415 includes information indicating that the frequency is the frequency of the SCell and information on the frequency of the PCell corresponding to the SCell. Indication "is generated and output to the transmission unit 405.

  The PCell / SCell determination unit 425 of the Proximity Indication creation unit 415 confirms with the past information management unit 411 whether the input cell is PCell or SCell. When the input cell is input from the past information management unit 411 that the input cell is PCell, the PCell / SCell determination unit 425 outputs to the Proximity Indication creation unit 415 that the cell is PCell. Moreover, when the input cell is input from the past information management unit 411 that the input cell is a SCell, the PCell / SCell determination unit 425 outputs to the Proximity Indication creation unit 415 that the cell is a SCell. In this way, since the terminal UE1 can notify the wireless communication device SNE1 of whether it is a PCell or a SCell, the wireless communication device SNE1 can perform an efficient measurement setting.

  The white list management unit 417 manages the white list input from the control unit 403. The white list management unit 417 outputs a white list in response to an instruction from the CSG member determination unit 419.

  When the CSG identifier is input from the control unit 403, the CSG member determination unit 419 instructs the white list management unit 417 to output the white list. The CSG member determination unit 419 checks whether the white list input from the white list management unit 417 includes the CSG identifier input from the control unit 103. If necessary, the CSG member determination unit 419 instructs the control unit 403 to output a PLMN identifier, and uses the white list for input CSG identifier verification. When the CSG member determination unit 419 determines that the CSG identifier input from the control unit 403 matches the white list, the CSG member determination unit 419 outputs to the control unit 403 that the CSG identifier is a member. If the CSG member determination unit 419 determines that the CSG identifier input from the control unit 403 does not match the white list, the CSG member determination unit 419 outputs to the control unit 403 that the CSG identifier is not a member (non-member).

  The measurement management unit 421 outputs the measurement of the reception quality of the cell to the reception unit 401 based on the measurement setting. The measurement management unit 421 determines to send a measurement result report based on the reception quality of the cell input from the reception unit 401. When the measurement management unit 421 determines to send the measurement result report, the measurement management unit 421 outputs the reception quality of the cell input from the reception unit 401 to the measurement result report creation unit 423. In addition, the measurement management unit 421 manages the reception quality of the cell input from the reception unit 401. Further, when the measurement management unit 421 is instructed to create a measurement result report including information on the best cell of another frequency according to the measurement setting, in addition to the cell that satisfies the report condition, the measurement management unit 421 also displays the best cell at the instructed frequency. Include a measurement result report. Note that the method of instructing to include the best cell of another frequency may be, for example, a method of instructing the frequency in the report setting (reportConfig). At this time, only one frequency may be indicated, or a plurality of frequencies may be indicated. Also, a frequency that is not currently used by the terminal may be used. In this case, the measurement setting at the frequency may be passed to the terminal.

  When instructed by the measurement management unit 421 to create a measurement result report, the measurement result report creation unit 423 creates a measurement result report from the received reception quality of the cell. Further, when CGI and PCI are input from the control unit 403, the measurement result report creation unit 423 creates a measurement result report from these pieces of information. In addition, when the CSG identifier and the “member” state are input from the control unit 403, the measurement result report creation unit 423 creates a measurement result report including the information together. The measurement result report creation unit 423 outputs the measurement result report to the transmission unit 405.

  The transmission unit 405 transmits information input from the control unit 403, the Proximity Indication creation unit 415 of the control unit 403, and the measurement result report creation unit 423 of the control unit 403 to the connected cells.

[Operation Flowchart of Terminal UE1 of Fourth Embodiment]
FIG. 17 is a flowchart illustrating an example of the operation of the terminal UE1 in the fourth embodiment. The terminal UE1 creates past information (Finger Print) in each of the PCell and the SCell when performing carrier aggregation in the HeNB base station THeNB1 (step S401). Next, the terminal UE1 receives SIB1 including support of “Proximity Indication” from the wireless communication device SNE1 (step S402). Next, the terminal UE1 detects that it is close to the CSG cell from the past information (step S403). Next, the terminal UE1 has information about the frequency of the PCell and the frequency of the SCell when communicating with the CSG cell. “Proximity Indication” including the message is generated and transmitted to the wireless communication device SNE1 (step S404).

  Next, terminal UE1 receives the measurement setting with respect to the frequency of PCell from radio | wireless communication apparatus SNE1 (step S405). Note that the measurement setting instructs to transmit the best cell at the indicated frequency other than the PCell frequency together when the cell satisfies the reporting condition at the PCell frequency. The best cell is a candidate for SCell. The terminal UE1 detects a cell at the frequency of the PCell, and when the reception quality of the cell satisfies the report condition, creates a measurement result report together with the reception quality of the best cell of the frequency indicated in the measurement setting, and performs radio communication. The data is transmitted to the device SNE1 (step S406). The measurement setting may be made to notify the best cell of the instructed frequency only when a specific CSG cell is found.

[Configuration of Wireless Communication Device SNE1 of Fourth Embodiment]
FIG. 18 is a block diagram of a wireless communication device SNE1 that constitutes the wireless communication system of the fourth embodiment. As illustrated in FIG. 18, the wireless communication device SNE1 of the fourth embodiment includes a wireless reception unit 451, a network reception unit 453, a network transmission unit 455, a wireless transmission unit 457, and a control unit 459. Prepare. The control unit 459 includes a measurement setting management unit 461 and a handover management unit 463.

  The radio reception unit 451 receives a response message to the individual control information transmitted from the terminal UE1, a measurement result report (Measurement Report), “Proximity Indication”, and the like, and outputs them to the control unit 459.

  The network receiving unit 453 receives a handover response message and outputs it to the control unit 459.

  The network transmission unit 455 transmits a handover request message.

  The control unit 459 outputs the measurement result report (Measurement Report) received by the wireless reception unit 451 to the handover management unit 463. The control unit 459 outputs “Proximity Indication” received by the wireless reception unit 451 to the measurement setting management unit 461. The control unit 459 creates notification information and outputs it to the wireless transmission unit 457. In addition, the control unit 459 creates individual control information from an instruction from the handover management unit 463, information input from the measurement setting management unit 461, and the like, and outputs the individual control information to the wireless transmission unit 457.

  When the handover management unit 463 supports handover to the CSG cell or the hybrid cell, the control unit creates the individual control information with the parameter “proximityIndicationEUTRA” set to “Enable” in order to cause the terminal to transmit “Proximity Indication”. 459 is instructed. When the handover management unit 463 determines a handover to Cell1, the handover management unit 463 creates a handover request message including a measurement result report. The handover management unit 463 outputs the handover request message created to the HeNB base station THeNB1 that manages the cell to the network transmission unit 455 so as to transmit it. When the handover response message includes an instruction to approve handover to the cell, the handover management unit 463 outputs the handover command included in the handover response message to the control unit 459 to transmit to the terminal UE1. . On the other hand, when the handover response message includes an instruction not to approve the handover, the handover management unit 463 switches to handover to a cell other than the cell or maintains the connection to the cell.

  The measurement setting management unit 461 creates a measurement setting for the frequency of the PCell included in “Proximity Indication”. When the “Proximity Indication” includes the SCell frequency, the measurement setting management unit 461 includes the SCell included in the “Proximity Indication” in addition to the instruction to transmit the measurement result report according to the measurement setting at the PCell frequency. A measurement setting that instructs to transmit a measurement result report including the reception quality of the cell (best cell) having the best reception quality at the frequency of may be created. The measurement setting management unit 461 outputs the created measurement setting to the control unit 459. Note that the measurement setting management unit 461 transmits the measurement result report including the reception quality of the best cell in the SCell frequency included in the “Proximity Indication” only when the PCell measurement result report is transmitted. Measurement settings may be created to indicate Even if the measurement setting management unit 461 creates a measurement setting that instructs to transmit a measurement result report including the reception quality of the best cell in a frequency other than the frequency of the SCell included in the “Proximity Indication”. Good.

  The radio transmission unit 457 transmits individual control information and broadcast information to the terminal UE1.

[Configuration of HeNB Base Station THeNB1 of Fourth Embodiment]
FIG. 19 is a block diagram of the HeNB base station THeNB1 constituting the wireless communication system of the fourth embodiment. As illustrated in FIG. 19, the HeNB base station THeNB1 of the fourth embodiment includes a radio reception unit 481, a network reception unit 483, a network transmission unit 485, a radio transmission unit 487, and a control unit 489. Prepare. The control unit 489 includes a broadcast information management unit 491 and a handover management unit 493.

  The radio reception unit 481 receives a response message to the individual control information transmitted from the terminal UE1, a measurement result report (Measurement Report), and the like, and outputs the response message to the control unit 489.

  The network reception unit 483 receives the handover request message and outputs the message to the control unit 489.

  The network transmission unit 485 transmits a handover response message.

  The control unit 489 outputs the handover request message input from the network reception unit 483 to the handover management unit 493. The control unit 489 instructs the notification information management unit 491 to create notification information.

  The notification information management unit 491 creates notification information in response to an instruction from the control unit 489. The broadcast information management unit 491 outputs the created broadcast information to the wireless transmission unit 487.

  The handover management unit 493 identifies the handover destination cell from the measurement result report included in the handover request message input from the control unit 489. When determining that the handover to the cell is approved, the handover management unit 493 creates a handover response message including a handover command to the cell addressed to the terminal UE1, and outputs the handover response message to the network transmission unit 485. Further, when determining that the carrier aggregation can be provided from the measurement result report, the handover management unit 493 creates a handover response message including a handover command including the carrier aggregation information addressed to the terminal UE1, and outputs the handover response message to the network transmission unit 485. When operating as a CSG cell, the handover management unit 493 does not accept a handover if the handover request message indicates that it is not a member (non-member). Note that the handover management unit 493 determines whether to accept the handover in consideration of the state of its own radio resource.

  The radio transmission unit 487 transmits the individual control information and the broadcast information to the terminal UE1.

  As described above, according to the present embodiment, in the “Proximity Indication” transmitted from the terminal UE1 to the radio communication device SNE1, the information that the frequency f1 is the frequency used for the PCell and the frequency f2 are in the SCell. The measurement configuration (Measurement Configuration) transmitted from the wireless communication device SNE1 to the terminal UE1 includes information indicating that a measurement result report at the PCell frequency f1 is created. Thus, an instruction to include the reception quality of the best cell at the frequency f2 in the measurement result report is also included. For this reason, the HeNB base station THeNB1 can correctly determine the handover destination cell based on the handover request message including the measurement result report (Measurement Report) from the terminal UE1, and the radio communication apparatus SNE1 performs the handover to the correct cell. The terminal UE1 can be instructed. Also, since the terminal UE1 can simultaneously acquire information on cells as SCell candidates, it can start carrier aggregation immediately after handover.

  Note that the above embodiments may be used in combination. For example, the first embodiment and the second embodiment may be used in combination, or the first embodiment and the third embodiment may be used in combination.

  In the second embodiment, the third embodiment, and the fourth embodiment, the method in which the HeNB base station THeNB1 operates normally as a PCell and other cells as SCells has been described. The present invention can also be applied to other operation methods. For example, when the HeNB base station THeNB1 manages a plurality of cells in the own station, it is shown as one cell on the S1 interface, but may be managed as a plurality of cells. For example, the HeNB base station THeNB1 pretends on the S1 interface that a terminal connected to a cell that is not normally operated is connected to a cell that is normally operated. By doing in this way, you may make the cell used as PCell into the cell which is not operating normally with respect to the terminal connected with the cell which HeNB base station THHeNB1 manages. This is because it is possible to intentionally switch a cell to be a PCell based on a measurement result report from a terminal connected to the HeNB base station THeNB1. Further, when the HeNB base station THeNB1 can correctly recognize the cell indicated by the handover request message by the handover request message transmitted from the radio communication apparatus to which the terminal is connected, the cell not operating normally Can be set on the terminal alone or with PCell.

  Further, in the fourth embodiment, the case where the wireless communication device SNE1 creates a measurement setting by “Proximity Indication” has been described, but the above-described measurement setting may be created without “Proximity Indication”. That is, when a measurement result report is transmitted at a specific frequency, the radio communication device SNE1 may create a measurement setting that instructs to include the measurement result of the best cell at another specific frequency. In this way, in a base station that manages only a specific frequency, mobility control that can provide carrier aggregation immediately after handover can be performed.

In each of the above embodiments, the handover destination base station has been described as the HeNB base station THeNB1, but the present invention is not limited to the HeNB base station. That is, the present invention can be applied to a wireless communication device having the same wireless communication device identifier as CGI.
In each of the above embodiments, a cell that is operated as an access prohibition, a cell that is operated as a SCell, a cell that does not accept a handover, and a cell that is not accepted as a handover destination cell are operated by a radio communication apparatus. In this case, it may be interpreted as a cell that cannot be specified by the S1 interface.

  Although cases have been described with the above embodiments as examples where the present invention is configured by hardware, the present invention can also be realized by software in cooperation with hardware.

  In addition, each functional block used in the description of each of the above embodiments is typically realized as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them. The name used here is LSI, but it may also be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration.

  Further, the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible. An FPGA (Field Programmable Gate Array) that can be programmed after manufacturing the LSI or a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.

  Further, if integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology. Biotechnology can be applied.

  In addition, although demonstrated as an antenna in the said embodiment, it is applicable similarly also with an antenna port. An antenna port refers to a logical antenna composed of one or more physical antennas. That is, the antenna port does not necessarily indicate one physical antenna, but may indicate an array antenna composed of a plurality of antennas. For example, in LTE (Long Term Evolution), it is not defined how many physical antennas an antenna port is composed of, but is defined as a minimum unit in which a base station can transmit a different reference signal (Reference signal). An antenna port may be defined as a minimum unit for multiplying a weight of a precoding vector.

  The radio communication apparatus according to the present invention is useful as a radio communication apparatus or the like that prevents handover to an unintended cell of the radio communication apparatus.

DESCRIPTION OF SYMBOLS 101 Reception part 103 Control part 105 Transmission part 111 Past information management part 113 Proximity detection part 115 Proximity Indication preparation part 117 White list management part 119 CSG member determination part 121 Measurement management part 123 Measurement result report preparation part 125 PCell selection part 151 Wireless reception Unit 153 wireless transmission unit 155 control unit 161 measurement setting management unit 163 handover management unit 201 reception unit 203 control unit 205 transmission unit 211 measurement management unit 213 measurement result report creation unit 215 white list management unit 217 CSG member determination unit 219 access prohibition determination Unit 251 wireless reception unit 253 network reception unit 255 network transmission unit 257 wireless transmission unit 259 control unit 261 measurement setting management unit 263 handover management unit 265 access prohibition determination unit 281 wireless reception unit 283 for network Communication unit 285 Network transmission unit 287 Wireless transmission unit 289 Control unit 291 Broadcast information management unit 293 Handover management unit 301 Reception unit 303 Control unit 305 Transmission unit 311 Measurement management unit 313 Measurement result report creation unit 315 White list management unit 317 CSG member Determination unit 351 Wireless reception unit 353 Network reception unit 355 Network transmission unit 357 Wireless transmission unit 359 Control unit 361 Measurement setting management unit 363 Handover management unit 381 Wireless reception unit 383 Network reception unit 385 Network transmission unit 387 Wireless transmission unit 389 Control unit 391 Broadcast information management unit 393 Handover management unit 395 CSG identifier determination unit 401 Reception unit 403 Control unit 405 Transmission unit 411 Past information management unit 413 Proximity detection unit 415 Proximity Indication creation unit 417 Trist management unit 419 CSG member determination unit 421 Measurement management unit 423 Measurement result report creation unit 425 PCell / SCell determination unit 451 Wireless reception unit 453 Network reception unit 455 Network transmission unit 457 Wireless transmission unit 459 Control unit 461 Measurement setting management unit 463 Handover management unit 481 Wireless reception unit 483 Network reception unit 485 Network transmission unit 487 Wireless transmission unit 489 Control unit 491 Broadcast information management unit 493 Handover management unit

Claims (18)

A wireless communication device capable of providing an access-restricted cell that allows access only to a specific terminal,
A broadcast information creating unit that creates the broadcast information in which false identification information or empty information that is not used in the wireless communication device is set as identification information of access restriction included in broadcast information of a cell that is not accepted as a handover destination cell;
A transmission unit for transmitting the broadcast information to a terminal;
A wireless communication device comprising: The wireless communication device according to claim 1,
A wireless communication apparatus in which false identification information or empty information that is not used in the wireless communication apparatus is false identification information that is not used in the terminal. The wireless communication device according to claim 1 or 2,
The wireless communication device comprising a handover manager that rejects a handover request based on the handover request message if the handover request message sent from another wireless communication device includes the false identification information or the empty information . A wireless communication terminal that wirelessly communicates with a wireless communication device,
An access prohibition determination unit that determines whether access to a cell indicated by the broadcast information is prohibited with reference to broadcast information from a neighboring wireless communication device that is not communicating;
When the determination result by the access prohibition determination unit indicates access prohibition to a predetermined cell, the measurement result report generation unit that generates a measurement result report related to the predetermined cell, including the determination result by the access prohibition determination unit;
A transmission unit that transmits the measurement result report to a wireless communication device to which the wireless communication terminal is connected;
Wireless communication terminal equipped with. A wireless communication terminal that wirelessly communicates with a wireless communication device,
An access prohibition determination unit that determines whether access to a cell indicated by the broadcast information is prohibited with reference to broadcast information from a neighboring wireless communication device that is not communicating;
When the determination result by the access prohibition determination unit indicates prohibition of access to the predetermined cell, the measurement result regarding the predetermined cell includes a parameter indicating that the wireless communication terminal is not a terminal permitted to access the predetermined cell. A measurement result report creation section for creating a report;
A transmission unit that transmits the measurement result report to a wireless communication device to which the wireless communication terminal is connected;
Wireless communication terminal equipped with. A wireless communication system in which a wireless communication terminal can communicate with a wireless communication device using a plurality of cells,
The wireless communication terminal is
When a cell detected at the frequency indicated by the measurement setting transmitted from the connected wireless communication device satisfies the condition for transmitting the measurement result report, the reception quality of the cell and another frequency indicated by the measurement setting are satisfied. A measurement result report creation unit for creating a measurement result report including the reception quality of the cell having the best reception quality in
A transmission unit that transmits the measurement result report created by the measurement result report creation unit to the connected wireless communication device, and
The connected wireless communication device is:
As an instruction to the wireless communication terminal, an instruction of another frequency including the reception quality of the cell having the best reception quality when sending the measurement result report is included in the measurement setting at the frequency for determining the transmission of the measurement result report A wireless communication system that creates measurement settings and transmits the measurement settings to the wireless communication terminal. A wireless communication system in which a wireless communication terminal can communicate with a wireless communication device using a plurality of cells including a primary cell and a secondary cell,
The wireless communication terminal is
An information management unit that creates and manages past information related to each cell when communication using a plurality of cells is performed with the first wireless communication device;
A proximity determination unit that determines whether the wireless communication terminal has approached the first wireless communication device from information obtained from the second wireless communication device being connected and past information managed by the information management unit;
A cell information creating unit that creates cell information related to a plurality of cells when communicating with the first wireless communication device with reference to past information managed by the information management unit;
A transmission unit that transmits the cell information created by the cell information creation unit and a measurement result report based on an instruction from the second wireless communication device to the second wireless communication device, and
The second wireless communication device is:
As an instruction to the radio communication terminal, in addition to the reception quality at the frequency of the primary cell included in the cell information transmitted from the radio communication terminal, the reception quality at the frequency of the secondary cell included in the cell information is A wireless communication system for creating a measurement setting for instructing to transmit a measurement result including reception quality of the best cell and transmitting the measurement setting to the wireless communication terminal. The wireless communication system according to claim 7,
When the wireless communication terminal receives the measurement setting from the second wireless communication device, the reception quality at the frequency of the primary cell, the reception quality of the cell with the best reception quality at the frequency of the secondary cell, A wireless communication system including a measurement result report creation unit that creates a measurement result report including A wireless communication terminal capable of communicating with a wireless communication device using a plurality of cells including a primary cell and a secondary cell,
A past information management unit that creates and manages past information related to each cell when communication using a plurality of cells is performed with the first wireless communication device;
A proximity determination unit that determines whether the wireless communication terminal has approached the first wireless communication device from information obtained from the connected second wireless communication device and past information managed by the past information management unit;
Cell information creation for creating cell information related to the plurality of cells when communication is performed with the first wireless communication device using the plurality of cells with reference to past information managed by the past information management unit And
A transmitting unit that transmits the cell information created by the cell information creating unit to the second wireless communication device;
Instructs to transmit a measurement result report including the reception quality of the cell having the best reception quality at the frequency of the secondary cell included in the cell information in addition to the reception quality at the frequency of the primary cell included in the cell information. Upon receiving the measurement setting from the second wireless communication device that creates a measurement setting and transmits it to the wireless communication terminal, a measurement result report creation unit that creates a measurement result report according to the measurement setting;
Wireless communication terminal equipped with. A wireless communication device that wirelessly communicates with a wireless communication terminal capable of communication using a plurality of cells including a primary cell and a secondary cell,
Cells related to the plurality of cells that the wireless communication terminal creates and transmits to the wireless communication device when the wireless communication terminal comes close to another wireless communication device that has performed communication using the plurality of cells Measurement setting instructing to transmit a measurement result report including the reception quality of the cell having the best reception quality at the frequency of the secondary cell included in the cell information in addition to the reception quality at the frequency of the primary cell included in the information A wireless communication terminal that creates and transmits to the wireless communication terminal. A wireless communication terminal capable of communicating with a wireless communication device using a plurality of cells including a primary cell and a secondary cell,
A past information management unit that creates and manages past information related to each cell when communication using a plurality of cells is performed with the first wireless communication device;
A proximity determination unit that determines whether the wireless communication terminal has approached the first wireless communication device from information obtained from the connected second wireless communication device and past information managed by the past information management unit;
Cell information related to primary cells included in the plurality of cells when communication is performed with the first wireless communication apparatus using the plurality of cells with reference to past information managed by the past information management unit. A cell information creation unit to be created;
A transmitting unit for transmitting the cell information created by the cell information creating unit and the measurement result report at the frequency of the primary cell instructed from the second wireless communication device to the second wireless communication device;
Wireless communication terminal equipped with. A wireless communication method performed by a wireless communication device capable of providing an access-restricted cell that allows access only to a specific terminal,
As the access restriction identification information included in the broadcast information of a cell that is not accepted as a handover destination cell, create the broadcast information in which false identification information or empty information that is not used in the wireless communication device is set,
A wireless communication method for transmitting the broadcast information to a terminal. The wireless communication method according to claim 12, comprising:
A wireless communication method for rejecting a handover request based on the handover request message if the false identification information or the empty information is included in a handover request message sent from another wireless communication apparatus. A wireless communication method performed by a wireless communication terminal that wirelessly communicates with a wireless communication device,
With reference to broadcast information from a neighboring wireless communication device that is not communicating, it is determined whether access to the cell indicated by the broadcast information is prohibited,
When the determination result indicates prohibition of access to the predetermined cell, a measurement result report relating to the predetermined cell including the determination result is created,
A wireless communication method for transmitting the measurement result report to a wireless communication apparatus to which the wireless communication terminal is connected. A wireless communication method performed by a wireless communication terminal that wirelessly communicates with a wireless communication device,
With reference to broadcast information from a neighboring wireless communication device that is not communicating, it is determined whether access to the cell indicated by the broadcast information is prohibited,
When the determination result indicates prohibition of access to the predetermined cell, a measurement result report related to the predetermined cell including a parameter indicating that the wireless communication terminal is not a terminal permitted to access the predetermined cell;
A wireless communication method for transmitting the measurement result report to a wireless communication apparatus to which the wireless communication terminal is connected. A wireless communication method performed by a wireless communication terminal capable of communicating with a wireless communication device using a plurality of cells including a primary cell and a secondary cell,
Create and manage past information related to each cell when communication using a plurality of cells is performed with the first wireless communication device,
From the information obtained from the connected second wireless communication device and the past information, it is determined whether the wireless communication terminal has approached the first wireless communication device,
With reference to the past information, cell information relating to the plurality of cells when communication is performed with the first wireless communication device using the plurality of cells is created, and the second wireless communication device Send
In addition to the reception quality at the frequency of the primary cell indicated by the cell information transmitted from the second wireless communication apparatus, the reception quality of the cell with the best reception quality at the frequency of the secondary cell included in the cell information Receive a measurement configuration that instructs you to send a measurement report containing
A wireless communication method for transmitting a measurement result report including the reception quality at the frequency of the primary cell indicated by the measurement setting and the best reception quality at the frequency of the secondary cell to the second wireless communication apparatus. A wireless communication method performed by a wireless communication device that wirelessly communicates with a wireless communication terminal capable of communication using a plurality of cells including a primary cell and a secondary cell,
Cells related to the plurality of cells that the wireless communication terminal creates and transmits to the wireless communication device when the wireless communication terminal comes close to another wireless communication device that has performed communication using the plurality of cells Measurement setting instructing to transmit a measurement result report including the reception quality of the cell having the best reception quality at the frequency of the secondary cell included in the cell information in addition to the reception quality at the frequency of the primary cell included in the information A wireless communication method of creating and transmitting to the wireless communication terminal. A wireless communication method performed by a wireless communication terminal capable of communicating with a wireless communication device using a plurality of cells including a primary cell and a secondary cell,
Create and manage past information related to each cell when communication using a plurality of cells is performed with the first wireless communication device,
From the information obtained from the connected second wireless communication device and the past information, it is determined whether the wireless communication terminal has approached the first wireless communication device,
With reference to the past information, cell information related to primary cells included in the plurality of cells when the first wireless communication apparatus communicates with the plurality of cells is created, and the second information To the wireless communication device
Receiving a measurement setting instructed to transmit a measurement result report at a frequency of a primary cell indicated by the cell information, transmitted from the second wireless communication device;
A wireless communication method for transmitting a measurement result report at the frequency of the primary cell indicated by the measurement setting to the second wireless communication apparatus.

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