JP2014017801A - Radio terminal device, communication system, communication control method, and communication control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio terminal device, a communication system, a communication control method, and a communication control program which can reduce a load on a radio base station device forming a specific area even when a large number of radio terminal devices exist in the area.SOLUTION: A radio terminal device 202B which can communicate with a plurality of radio base station devices, comprises: a determination unit 37 which determines whether a radio base station device is a specific radio base station device; and a communication control unit 38 which selectively performs processing for establishing communication connection on the radio base station device determined as the specific radio base station device by the determination unit 37.

Description

  The present invention relates to a wireless terminal device, a communication system, a communication control method, and a communication control program, and more particularly, to a wireless terminal device, a communication system, a communication control method, and a communication system in which the wireless terminal device can communicate with a plurality of wireless base station devices. The present invention relates to a communication control program.

  Conventionally, in a mobile communication system, a communication service is provided by a radio base station apparatus that forms an area in which a cell having a radius of several hundred meters to several tens of kilometers, that is, a radio terminal apparatus can communicate.

  In addition, as a system using such a communication service, devices equipped with wireless devices exchange information with each other without human intervention, so that, for example, the inventory status of products built in vending machines can be automatically There is known an M2M (Machine to Machine) network system in which devices are automatically controlled, for example, automatically reported to a management device.

  For example, the M2M network system has terminal address holding means for holding the address of a terminal that is a predetermined transmission destination for each wireless terminal in order to simplify the communication procedure and reduce power consumption, from the wireless terminal to the terminal. When transmitting a message, when the gateway node receives a radio frame from the wireless terminal, the gateway node accesses the terminal address holding means, identifies the terminal address of the message transmission destination for each wireless terminal, and the identified transmission destination A message is transmitted to the terminal, i.e., the fixed partner via the gateway (see Patent Document 1).

Japanese Patent No. 4237134

  By the way, there are cases where a large number of wireless terminal devices exist in a specific area due to a dramatic increase in the number of mobile communication service subscribers in recent years. In addition, in the M2M network described above, devices equipped with wireless devices rarely move over a wide range. For example, in an area where there are many devices such as in a factory, a large number of wireless terminal devices are always in a specific area. Exists. In these cases, access from a large number of wireless terminal devices or devices equipped with wireless devices to the wireless base station device forming the area may be concentrated, and there is a problem in that a large load is applied to the wireless base station device. is there.

  The present invention has been made to solve the above-described problems, and its object is related to a radio base station apparatus that forms an area even when a large number of radio terminal apparatuses exist in a specific area. To provide a wireless terminal device, a communication system, a communication control method, and a communication control program that can reduce the load.

  (1) In order to solve the above-described problem, a radio terminal apparatus according to an aspect of the present invention is a radio terminal apparatus capable of communicating with a plurality of radio base station apparatuses, and the radio base station apparatus is a specific radio base station. A determination unit for determining whether or not the wireless base station device is a station device, and a process for selectively establishing a communication connection to the wireless base station device determined by the determination unit to be the specific wireless base station device A communication control unit for performing

  In this way, by restricting the communication connection destination of the wireless terminal device to a specific wireless base station device, the wireless terminal device is not greatly affected on the network by other wireless base station devices such as a public mobile communication network. In addition, it is possible to flexibly construct a network with specific radio base station devices.

  In addition, as described above, since a communication connection between the wireless terminal device and a specific wireless base station device is established in a restricted network, a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that wireless base station apparatuses other than the said specific wireless base station apparatus will be in a congestion state, and can reduce the load concerning this wireless base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  (2) Preferably, the radio base station apparatus can perform an operation of permitting a radio terminal apparatus belonging to a predetermined subscriber group to communicate with the radio terminal apparatus. A radio base station apparatus that is permitted for a subscriber group to which the terminal apparatus belongs is determined to be the specific radio base station apparatus.

  With such a configuration, a wireless terminal device and a wireless base station device suitable as a communication connection destination of the wireless terminal device can be easily associated in advance.

  (3) Preferably, the wireless terminal device further includes a storage unit for storing the wireless base station device with which communication connection has been established in the past with the wireless terminal device of the wireless terminal device. The wireless base station device stored in the storage unit is preferentially determined whether or not it is the specific wireless base station device.

  With such a configuration, the wireless terminal device determines whether or not the wireless terminal device is a specific wireless base station device preferentially from the wireless base station device that is likely to be the communication destination of the wireless terminal device. Processing for the above determination by the apparatus can be reduced.

  (4) Preferably, the wireless terminal device further obtains base station information related to a wireless base station device other than the serving base station from a serving base station which is a wireless base station device to which the wireless terminal device is connected. An information acquisition unit for acquiring, the determination unit is acquired by the information acquisition unit when the wireless terminal device changes the communication connection destination from the serving base station to another wireless base station device A wireless base station device to be connected to is selected from the wireless base station devices corresponding to the base station information.

  For example, a wireless terminal device measures a wireless signal transmitted from a surrounding wireless base station device, and autonomously selects a wireless base station device that is a communication connection destination based on the measured reception level of the wireless signal. In some cases, a wireless base station device other than a specific wireless base station device is autonomously selected as a communication connection destination. On the other hand, as described above, the radio terminal device according to the present invention selects the communication connection destination of the radio terminal device from the radio base station devices corresponding to the base station information transmitted from the serving base station. It is possible to prevent a radio base station apparatus other than a specific radio base station apparatus from being selected as a communication connection destination.

  (5) Preferably, the wireless terminal device has invalidated Autonomous Search defined by 3GPP (Third Generation Partnership Project).

  As described above, by disabling “Autonomous Search” of the wireless terminal device, it is possible to prevent the wireless base station device other than the specific wireless base station device from being selected as the communication connection destination of the wireless terminal device. it can.

  (6) Preferably, the determination unit obtains identification information of the radio base station device from the radio base station device, and the radio terminal device further obtains identification information of one or a plurality of the radio base station devices. A list storage unit for storing an identification information list including the identification information list, wherein the determination unit determines whether the identification information list includes the identification information list based on whether the acquired identification information is included in the identification information list. It is determined whether it is a radio base station apparatus.

  In this way, whether the wireless terminal device is a wireless base station device suitable as a communication connection destination of the wireless terminal device without performing complicated determination processing by providing a list of identification information of the wireless base station device. It is possible to easily determine whether or not.

  (7) Preferably, when the communication connection between the wireless terminal device and the wireless base station device is established, the determination unit includes the identification information of the wireless base station device with which the communication connection is established in the identification information list. It is confirmed whether or not it is included. If the identification information is not included in the identification information list, the identification information is added to the identification information list.

  With such a configuration, even when a wireless base station device is newly added to the network, the identification information of the wireless base station device can be added to the identification information list. After the addition, the new radio base station device can be determined as a specific radio base station device in the same manner as other radio base station devices already included in the identification information list.

  (8) Preferably, the determination unit determines whether or not the type of the radio base station apparatus is a predetermined type, and the communication control unit determines that the wireless unit has been determined to be the predetermined type by the determination unit. A process for establishing a communication connection with the base station apparatus is started.

  With such a configuration, the wireless terminal device starts processing for preferentially establishing a communication connection with a wireless base station device that has a high probability of being capable of communication connection with itself, such as a femto base station. can do.

  (9) In order to solve the above-described problem, a communication system according to an aspect of the present invention includes a communication including one or a plurality of radio base station apparatuses and a plurality of radio terminal apparatuses capable of communicating with the plurality of radio base station apparatuses. In the system, the wireless terminal device determines whether the wireless base station device is a specific wireless base station device, and determines whether the wireless base station device is the specific wireless base station device. A process for selectively establishing a communication connection is performed.

  In this way, by restricting the communication connection destination of the wireless terminal device to a specific wireless base station device, the wireless terminal device is not greatly affected on the network by other wireless base station devices such as a public mobile communication network. In addition, it is possible to flexibly construct a network with specific radio base station devices.

  In addition, as described above, since a communication connection between the wireless terminal device and a specific wireless base station device is established in a restricted network, a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that wireless base station apparatuses other than the said specific wireless base station apparatus will be in a congestion state, and can reduce the load concerning this wireless base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  (10) Preferably, the specific radio base station apparatus operates in a hybrid mode in which communication is permitted to both the radio terminal apparatus belonging to a predetermined subscriber group and the radio terminal apparatuses belonging to different subscriber groups. .

  With this configuration, when a mobile terminal such as a mobile phone that does not belong to a predetermined subscriber group moves into a cell formed by a specific radio base station apparatus, communication at the mobile terminal is disconnected. Can be prevented.

  (11) Preferably, the radio base station apparatus can perform an operation of permitting a radio terminal apparatus belonging to a predetermined subscriber group to communicate with itself, and a communication connection destination of the radio terminal apparatus The serving base station is a base station information related to a wireless base station device that is subject to a subscriber group that is permitted to communicate among wireless base station devices other than itself. When the wireless terminal device changes the communication connection destination from the serving base station to another wireless base station device, the wireless terminal device of the wireless base station device corresponding to the base station information received from the serving base station Select the wireless base station device of the communication connection destination from the inside.

  As described above, the communication connection destination candidates of the wireless terminal device are limited to the wireless base station devices that allow the subscriber group to which the wireless terminal device belongs, and then the communication connection destination is selected for the wireless terminal device. By doing so, it is possible to reduce the processing for selection by the wireless terminal device.

  (12) Preferably, the communication system further includes a gateway device for relaying data transmitted / received between the plurality of radio base station devices and an upper network, and one or a plurality of the radio base station devices Can perform an operation of permitting wireless terminal devices belonging to a predetermined subscriber group to communicate with itself.

  In this way, by connecting the wireless base station device and the higher level network via the gateway device, it is possible to reduce the management targets of the higher level network and to distribute access concentrated on the higher level network.

  (13) Preferably, the gateway device relays data transmitted / received between an upper network and a lower network including one or a plurality of the radio base station devices, and the radio base station is provided for each lower network. The subscriber group to which the station device permits communication is different.

  With such a configuration, even in a situation where a plurality of areas to which the M2M network system is applied exist in different places, these areas can be collectively managed by the gateway device.

  (14) Preferably, the radio base station apparatus broadcasts its own identification information, the radio terminal apparatus stores an identification information list including identification information of one or more radio base station apparatuses, and It is determined whether or not the radio base station apparatus is the specific radio base station apparatus based on whether or not the identification information broadcast from the base station apparatus is included in the identification information list.

  In this way, whether the wireless terminal device is a wireless base station device suitable as a communication connection destination of the wireless terminal device without performing complicated determination processing by providing a list of identification information of the wireless base station device. It is possible to easily determine whether or not.

  (15) Preferably, the wireless terminal device transmits an attach request for performing an attach process to the wireless base station device after establishing a communication connection to the wireless base station device, and the wireless base station device When the attach request is received from the wireless terminal device, an attach request including the identification information of the wireless terminal device and its own identification information is transmitted to the upper network, and the upper device in the upper network identifies the wireless terminal device. Based on the information and the identification information of the radio base station apparatus, it is determined whether communication connection between the radio terminal apparatus and the radio base station apparatus is possible.

  As described above, with the configuration in which whether or not communication connection is possible is determined in the host device in the host network that manages information related to the radio terminal device and the radio base station device, it is possible to appropriately determine whether or not communication connection is possible.

  In addition, the wireless terminal device may perform processing for establishing a communication connection with a wireless base station device that is not included in the identification information list in order to cope with addition of a wireless base station device configuring the network. In such a case, as described above, a configuration in which whether or not communication connection is possible is determined by a higher-level device in a higher-level network that manages information regarding the wireless terminal device and the wireless base station device is more effective.

  (16) Preferably, the host device in the host network is a communication control device for managing one or a plurality of the radio base station devices.

  Thus, since the communication control apparatus which manages a radio base station apparatus is the structure which performs the said determination, the determination of the communication connection possibility can be performed appropriately.

  (17) Preferably, the host device in the host network is a subscriber information management device for managing subscriber information of the wireless terminal device.

  Thus, since the communication control device that manages the subscriber information of the wireless terminal device is configured to perform the above determination, it is possible to appropriately determine whether or not communication connection is possible.

  (18) Preferably, the higher order apparatus in the higher order network transmits the response to the attach request transmitted from the wireless base station apparatus to the wireless base station apparatus before the wireless terminal apparatus and the wireless base station apparatus Judgment of whether or not communication connection is possible.

  With such a configuration, since a response to the attach request is not transmitted to the radio base station apparatus until it is determined whether or not the communication connection is possible, the communication connection between the radio base station apparatus and the radio terminal apparatus that are not permitted to communicate. Can be prevented from being established.

  (19) In order to solve the above-described problem, a radio terminal apparatus according to another aspect of the present invention is a radio terminal apparatus capable of communicating with a plurality of radio base station apparatuses, and a base related to the radio base station apparatus An information acquisition unit for acquiring station information; and a wireless terminal in which the wireless base station device corresponding to the base station information belongs to a predetermined subscriber group based on the base station information acquired by the information acquisition unit A determination unit for determining whether or not to perform a permission operation for permitting a device to communicate with the wireless base station device; and when the wireless base station device performs the permission operation, the wireless base station A communication control unit for performing processing for establishing a communication connection to the apparatus.

  With such a configuration, a wireless terminal device that does not belong to any subscriber group is permitted, that is, a communication connection is prevented from being established for a wireless base station device that operates in the open access mode. Since it is possible to prevent the radio base station device from becoming congested, for example, communication between a mobile terminal that does not belong to any subscriber group such as a mobile phone and a radio base station device that operates in the open access mode Can be prevented, and communication can be stabilized.

  (20) Preferably, in the case where the wireless base station device does not perform the permission operation, the determination unit determines whether the wireless base station device corresponding to the newly acquired base station information performs the permission operation. Judge whether or not.

  As described above, the above determination is repeated until a radio base station apparatus that performs the above-described permission operation is searched, so that a radio base station apparatus that operates in the open access mode and a radio base station apparatus that operates in the open access mode. It is possible to prevent the establishment of a communication connection with more certainty.

  (21) Preferably, the communication control unit performs a camping process on the radio base station apparatus when performing a process of establishing a communication connection with the radio base station apparatus.

  As described above, when the process of establishing the communication connection to the radio base station apparatus is performed, the camping process is performed on the radio base station apparatus, so that the radio terminal apparatus and the radio base station apparatus Communication can be enabled.

  (22) Preferably, the communication control unit performs an attach process when performing a process of establishing a communication connection to the radio base station apparatus.

  As described above, when the process of establishing the communication connection to the radio base station apparatus is performed, the terminal registration of the radio terminal apparatus can be performed with respect to the upper network by performing the attach process with respect to the upper network. it can.

  (23) In order to solve the above-described problem, a radio terminal apparatus according to another aspect of the present invention is a radio terminal apparatus capable of communicating with a plurality of radio base station apparatuses, and the radio base station apparatus includes: It is possible to perform an operation for allowing a wireless terminal device belonging to a predetermined subscriber group to communicate with itself, and the wireless terminal device is information for acquiring base station information related to the wireless base station device. Based on the base station information acquired by the acquisition unit and the information acquisition unit, the radio base station device to which the radio base station device corresponding to the base station information is allowed to belong to a subscriber group to which its own radio terminal device belongs A determination unit for determining whether or not it is a station device, and communication to the radio base station device when the radio base station device is a permission target for a subscriber group to which its own radio terminal device belongs And a communication control unit for performing a process for establishing a connection.

  In this way, by establishing a communication connection between the wireless terminal device and the wireless base station device to which the subscriber group to which the wireless terminal device belongs is permitted, other wireless base stations such as a public mobile communication network Without greatly affecting the network by the device, it is possible to flexibly construct a network by a predetermined radio base station device that allows the wireless terminal device and a subscriber group to which the wireless terminal device belongs.

  In addition, as described above, since a communication connection between the wireless terminal device and a predetermined wireless base station device is established in a restricted network, there are cases where a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that radio base station apparatuses other than the said predetermined | prescribed radio base station apparatus will be in a congestion state, and can reduce the load concerning radio base station apparatuses other than the said predetermined | prescribed radio base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  (24) Preferably, in the case where the wireless base station device does not allow a subscriber group to which the wireless base station device belongs, a wireless base station corresponding to the newly acquired base station information is preferable. It is determined whether or not the station apparatus is a radio base station apparatus for which a subscriber group to which its own radio terminal apparatus belongs is permitted.

  As described above, the above determination is repeated until a wireless base station device that is a target of permission for the subscriber group to which the wireless terminal device belongs is searched, so that the wireless terminal device and the subscriber group to which the wireless terminal device belongs. It is possible to more reliably prevent a communication connection from being established with a radio base station apparatus other than the radio base station apparatus that is subject to permission.

  (25) Preferably, the determination unit is a wireless terminal device in which the wireless base station device corresponding to the base station information belongs to a predetermined subscriber group based on the base station information acquired by the information acquisition unit. If the wireless base station apparatus performs the permission operation, the wireless base station apparatus determines whether to perform a permission operation for permitting communication with respect to the subscriber group to which the wireless terminal apparatus belongs. It is determined whether or not the wireless base station apparatus is a permission target.

  With such a configuration, the number of determination targets in determining whether or not the wireless base station device corresponding to the acquired base station information is a wireless base station device that is permitted for the subscriber group to which the wireless terminal device belongs is reduced. Therefore, the processing for the determination can be reduced.

  (26) Preferably, the communication control unit performs a camping process on the radio base station apparatus when performing a process of establishing a communication connection with the radio base station apparatus.

  As described above, when the process of establishing the communication connection to the radio base station apparatus is performed, the camping process is performed on the radio base station apparatus, so that the radio terminal apparatus and the radio base station apparatus Communication can be enabled.

  (27) Preferably, the communication control unit performs an attach process when performing a process of establishing a communication connection to the radio base station apparatus.

  As described above, when the process of establishing the communication connection to the radio base station apparatus is performed, the terminal registration of the radio terminal apparatus can be performed with respect to the upper network by performing the attach process with respect to the upper network. it can.

  (28) Preferably, the wireless terminal device is fixedly installed or restricted to move within a predetermined area.

  Here, in a situation where the wireless terminal device is fixedly installed or restricted to movement within a predetermined area, the wireless base station device is always present due to the presence of a large number of wireless terminal devices in a specific area. Is likely to be congested. However, according to the wireless terminal device according to the present invention, since the communication connection between the wireless terminal device and a specific wireless base station device can be established in a restricted network, the wireless terminal device is fixed. It is particularly effective in a situation where it is installed in a limited area or restricted to movement within a predetermined area.

  (29) Preferably, the wireless terminal device in the communication system is fixedly installed or restricted to movement within a predetermined area.

  According to the communication system of the present invention, since the communication connection between the plurality of wireless terminal devices and the specific wireless base station device can be established in the restricted network, the wireless terminal device is fixed. It is particularly effective in a situation where it is installed in or restricted to movement within a predetermined area.

  (30) In order to solve the above-described problem, a communication control method according to an aspect of the present invention is a communication control method in a radio terminal apparatus capable of communicating with a plurality of radio base station apparatuses, wherein the radio base station apparatus Determining whether the wireless base station device is a specific wireless base station device, performing a process of selectively establishing a communication connection with the wireless base station device determined to be the specific wireless base station device, and including.

  In this way, by restricting the communication connection destination of the wireless terminal device to a specific wireless base station device, the wireless terminal device is not greatly affected on the network by other wireless base station devices such as a public mobile communication network. In addition, it is possible to flexibly construct a network with specific radio base station devices.

  In addition, as described above, since a communication connection between the wireless terminal device and a specific wireless base station device is established in a restricted network, a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that wireless base station apparatuses other than the said specific wireless base station apparatus will be in a congestion state, and can reduce the load concerning this wireless base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  (31) In order to solve the above-described problem, a communication control method according to another aspect of the present invention includes one or a plurality of radio base station apparatuses and a radio terminal apparatus capable of communicating with the plurality of radio base station apparatuses. A communication control method in a communication system comprising: a step in which the wireless terminal device determines whether or not the wireless base station device is a specific wireless base station device; Performing a process of selectively establishing a communication connection with the radio base station apparatus determined to be a radio base station apparatus.

  In this way, by restricting the communication connection destination of the wireless terminal device to a specific wireless base station device, the wireless terminal device is not greatly affected on the network by other wireless base station devices such as a public mobile communication network. In addition, it is possible to flexibly construct a network with specific radio base station devices.

  In addition, as described above, since a communication connection between the wireless terminal device and a specific wireless base station device is established in a restricted network, a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that wireless base station apparatuses other than the said specific wireless base station apparatus will be in a congestion state, and can reduce the load concerning this wireless base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  (32) In order to solve the above-described problem, a communication control method according to another aspect of the present invention is a communication control method in a radio terminal apparatus capable of communicating with a plurality of radio base station apparatuses. Acquiring base station information related to a station device, and based on the acquired base station information, the wireless base station device corresponding to the base station information transmits the wireless signal to a wireless terminal device belonging to a predetermined subscriber group. A step of determining whether or not to perform a permit operation for permitting communication with the base station device, and a process for establishing a communication connection to the radio base station device when the radio base station device performs the permit operation. Performing steps.

  With such a configuration, a wireless terminal device that does not belong to any subscriber group is permitted, that is, a communication connection is prevented from being established for a wireless base station device that operates in the open access mode. Since it is possible to prevent the radio base station device from becoming congested, for example, communication between a mobile terminal that does not belong to any subscriber group such as a mobile phone and a radio base station device that operates in the open access mode Can be prevented, and communication can be stabilized.

  (33) In order to solve the above-described problem, a communication control method according to another aspect of the present invention is a communication control method in a radio terminal apparatus capable of communicating with a plurality of radio base station apparatuses. The station device can perform an operation of allowing a wireless terminal device belonging to a predetermined subscriber group to communicate with itself, and the communication control method acquires base station information related to the wireless base station device. And, based on the acquired base station information, whether or not the radio base station device corresponding to the base station information is a radio base station device for which a subscriber group to which its own radio terminal device belongs is permitted And when the wireless base station device is a permitted target group to which the wireless terminal device belongs, establishes a communication connection to the wireless base station device. And performing a physical.

  In this way, by establishing a communication connection between the wireless terminal device and the wireless base station device to which the subscriber group to which the wireless terminal device belongs is permitted, other wireless base stations such as a public mobile communication network Without greatly affecting the network by the device, it is possible to flexibly construct a network by a predetermined radio base station device that allows the wireless terminal device and a subscriber group to which the wireless terminal device belongs.

  In addition, as described above, since a communication connection between the wireless terminal device and a predetermined wireless base station device is established in a restricted network, there are cases where a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that radio base station apparatuses other than the said predetermined | prescribed radio base station apparatus will be in a congestion state, and can reduce the load concerning radio base station apparatuses other than the said predetermined | prescribed radio base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  (34) In order to solve the above-described problem, a communication control program according to an aspect of the present invention is a communication control program used in a wireless terminal device capable of communicating with a plurality of wireless base station devices. Determining whether or not the radio base station device is a specific radio base station device; and selectively establishing a communication connection to the radio base station device determined to be the specific radio base station device This is a program for executing a process step.

  In this way, by restricting the communication connection destination of the wireless terminal device to a specific wireless base station device, the wireless terminal device is not greatly affected on the network by other wireless base station devices such as a public mobile communication network. In addition, it is possible to flexibly construct a network with specific radio base station devices.

  In addition, as described above, since a communication connection between the wireless terminal device and a specific wireless base station device is established in a restricted network, a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that wireless base station apparatuses other than the said specific wireless base station apparatus will be in a congestion state, and can reduce the load concerning this wireless base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  (35) In order to solve the above problem, a communication control program according to another aspect of the present invention includes one or a plurality of radio base station apparatuses and a radio terminal apparatus capable of communicating with the plurality of radio base station apparatuses. A communication control program for use in a communication system comprising: a step of determining whether the wireless terminal device is a specific wireless base station device in the computer; And a step of performing a process of selectively establishing a communication connection with the radio base station apparatus determined to be the specific radio base station apparatus.

  In this way, by restricting the communication connection destination of the wireless terminal device to a specific wireless base station device, the wireless terminal device is not greatly affected on the network by other wireless base station devices such as a public mobile communication network. In addition, it is possible to flexibly construct a network with specific radio base station devices.

  In addition, as described above, since a communication connection between the wireless terminal device and a specific wireless base station device is established in a restricted network, a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that wireless base station apparatuses other than the said specific wireless base station apparatus will be in a congestion state, and can reduce the load concerning this wireless base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  (36) In order to solve the above-described problem, a communication control program according to another aspect of the present invention is a communication control program used in a wireless terminal device capable of communicating with a plurality of wireless base station devices, A step of acquiring base station information relating to the radio base station apparatus, and a radio terminal apparatus in which the radio base station apparatus corresponding to the base station information belongs to a predetermined subscriber group based on the acquired base station information Determining whether or not to perform a permission operation for permitting communication with the radio base station apparatus, and when the radio base station apparatus performs the permission operation, communication connection to the radio base station apparatus And a step for executing a process for establishing the above.

  With such a configuration, a wireless terminal device that does not belong to any subscriber group is permitted, that is, a communication connection is prevented from being established for a wireless base station device that operates in the open access mode. Since it is possible to prevent the radio base station device from becoming congested, for example, communication between a mobile terminal that does not belong to any subscriber group such as a mobile phone and a radio base station device that operates in the open access mode Can be prevented, and communication can be stabilized.

  (37) In order to solve the above-described problem, a communication control program according to another aspect of the present invention is a communication control program used in a radio terminal apparatus capable of communicating with a plurality of radio base station apparatuses, The radio base station apparatus can perform an operation of permitting a radio terminal apparatus belonging to a predetermined subscriber group to communicate with itself, and the communication control program relates to the radio base station apparatus. A step of acquiring base station information, and based on the acquired base station information, the radio base station device corresponding to the base station information targets a subscriber group to which its own radio terminal device belongs as a radio base station A step of determining whether or not it is a device, and when the wireless base station device is a permission target for a subscriber group to which its own wireless terminal device belongs, Serial is a program for executing and performing a process for establishing a communication connection to the wireless base station apparatus.

  In this way, by establishing a communication connection between the wireless terminal device and the wireless base station device to which the subscriber group to which the wireless terminal device belongs is permitted, other wireless base stations such as a public mobile communication network Without greatly affecting the network by the device, it is possible to flexibly construct a network by a predetermined radio base station device that allows the wireless terminal device and a subscriber group to which the wireless terminal device belongs.

  In addition, as described above, since a communication connection between the wireless terminal device and a predetermined wireless base station device is established in a restricted network, there are cases where a large number of wireless terminal devices exist in a specific area. Even if it exists, it can prevent that radio base station apparatuses other than the said predetermined | prescribed radio base station apparatus will be in a congestion state, and can reduce the load concerning radio base station apparatuses other than the said predetermined | prescribed radio base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  According to the present invention, even when a large number of wireless terminal devices exist in a specific area, it is possible to reduce the load on the wireless base station device forming the area.

It is a figure which shows the comparative example of a communication system provided with the radio | wireless terminal apparatus which concerns on the 1st Embodiment of this invention. In the communication system shown in FIG. 1, it is an example of the sequence which shows the flow of operation | movement when a radio | wireless terminal apparatus selects the radio | wireless base station apparatus used as a communication connection destination at the time of starting of a radio | wireless terminal apparatus. It is a figure which shows the structure of a communication system provided with the radio | wireless terminal apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of CSG-ID allocated to the wireless base station apparatus shown in FIG. It is a figure which shows an example of CSG-ID allocated to the radio | wireless terminal apparatus shown in FIG. It is a figure which shows the structure of the radio | wireless terminal apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows a response | compatibility with the process for communication connection establishment performed in the communication system provided with the radio | wireless terminal apparatus which concerns on the 1st Embodiment of this invention, and each layer in a communication protocol. In the communication system including the wireless terminal device according to the first embodiment of the present invention, the operation flow when the wireless terminal device selects the wireless base station device that is the communication connection destination when the wireless terminal device is activated is shown. It is an example of the sequence shown. In the communication system including the wireless terminal device according to the first embodiment of the present invention, the operation flow when the wireless terminal device selects the wireless base station device that is the communication connection destination when the wireless terminal device is activated is shown. It is an example of the sequence shown. It is a figure which shows an example of the sequence of the cell reselection operation | movement of the radio | wireless terminal apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows the structure of the communication system which concerns on the modification of the 1st Embodiment of this invention. It is a figure which shows the structure of a communication system provided with the radio | wireless terminal apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows the structure of the radio | wireless terminal apparatus which concerns on the 2nd Embodiment of this invention. It is an example of the sequence which shows the flow of operation | movement at the time of a radio | wireless terminal apparatus selecting the radio | wireless base station apparatus used as a communication connection destination in a communication system provided with the radio | wireless terminal apparatus which concerns on the 2nd Embodiment of this invention. . It is an example of the sequence which shows the flow of operation | movement when a radio | wireless terminal apparatus adds new cell ID to an identification information list | wrist in a communication system provided with the radio | wireless terminal apparatus which concerns on the 2nd Embodiment of this invention. In the communication system including the radio base station apparatus according to the second embodiment of the present invention, an example of a sequence showing an operation flow when the MME determines whether communication connection between the radio terminal apparatus and the radio base station apparatus is possible It is. An example of the sequence which shows the flow of operation | movement when HSS judges the propriety of communication connection of a radio | wireless terminal apparatus and a radio base station apparatus in a communication system provided with the radio base station apparatus which concerns on the 2nd Embodiment of this invention. It is.

  Hereinafter, a first embodiment and a second embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  The radio base station apparatus notifies the radio terminal apparatus of information about the cell and the neighboring cell that it forms, that is, the frequency of the radio signal and the ID (identification) of the neighboring cell. The wireless terminal device detects and measures neighboring cells based on information notified from the wireless base station device. The wireless terminal device starts moving to the neighboring cell based on the measurement result. Here, “movement” of the wireless terminal device means not only handover but also through which cell the wireless terminal device in an idle state starts communication in the future, that is, when a call or data communication is started. This means selecting whether to perform communication.

  For example, when the wireless terminal device is communicating with the wireless base station device, the destination of the wireless terminal device is determined by the wireless base station device or a higher-level device in the core network. Further, when the wireless terminal device is not communicating with the wireless base station device, the wireless terminal device determines the destination of the wireless terminal device.

  In addition, handover means that a radio base station apparatus that is a communication partner of a radio terminal apparatus during a call or data communication is switched.

  The wireless terminal device is located in a cell means that the wireless terminal device selects a wireless base station device forming the cell as a communication destination, that is, a communication connection destination, and communicates with the wireless base station device. It means a possible state or a state where communication is in progress.

  The femtocell and access mode are described in 3GPP (Third Generation Partnership Project) SPEC TS 22.22 as follows. That is, a femto base station is a customer premises apparatus that connects a wireless terminal device connected via a wireless interface to a mobile communication carrier network using an IP backhaul.

  Further, in the femtocell access mode, the femto base station in the closed access mode provides a service only to related CSG (Closed Subscriber Group) members. The hybrid mode femto base station also provides services to the associated CSG members and CSG non-members. The femto base station in the open access mode operates as a normal base station.

  Such a 3GPP definition may also be applied to the wireless communication system according to the first and second embodiments of the present invention.

  Further, the following definitions can be applied together with or separately from the above definitions.

  The macro base station is a radio base station apparatus that forms a macro cell having a radius of several kilometers, for example, and is a radio base station apparatus that is under the management of the operator and that can communicate with a radio terminal device contracted with the operator. . In addition, it is considered that the macro base station is basically not turned off.

  The femto base station is a radio base station device that forms a femto cell having a radius of several tens of meters, for example, and is mainly installed in an individual or corporate building, and moves or is turned off depending on the circumstances of the user. It is a possible radio base station device.

  Further, the femto base station operates in one of open / hybrid / closed access modes. When the femto base station operates in the closed access mode, only registered members (terminals) can be connected. When operating in the closed access mode, the service is provided only to registered members. When operating in the hybrid mode, the service is provided to both registered members and unregistered members, that is, non-members. Further, when operating in the open access mode, the same operation as the macro base station is performed.

[Comparative example]
FIG. 1 is a diagram illustrating a comparative example of a communication system including a wireless terminal device according to the first embodiment of the present invention.

  Referring to FIG. 1, a communication system 400 as a comparative example is a mobile communication system according to LTE (Long Term Evolution) standardized by 3GPP, for example, and includes radio base station apparatuses 101A and 101B and a core network (upper network). ) 301. Radio base station apparatuses 101A and 101B are, for example, macro base stations.

  The radio base station apparatus 101A can communicate with the radio terminal apparatus 202 by forming a cell CA and transmitting / receiving radio signals to / from the radio terminal apparatus 202 existing in the cell CA. In addition, the radio base station apparatus 101B can communicate with the radio terminal apparatus 202 by forming a cell CB and transmitting and receiving radio signals to and from the radio terminal apparatus 202 existing in the cell CB.

  The wireless terminal device 202 is the mobile terminal 202A or the M2M terminal 202B. The mobile terminal 202A is a mobile phone, for example, and is a terminal that is highly likely to move over a wide range in accordance with the movement of the user. The M2M terminal 202B is a device equipped with a radio in an M2M (Machine to Machine) network system.

  Here, the M2M network system is a system that uses a communication service, and is a system for exchanging information between M2M terminals, which are devices equipped with wireless devices, without human intervention. For example, a vending machine equipped with a radio automatically reports the inventory status of products built in itself to the management device using a communication service, so that the control of the vending machine is automatically performed. Done. Such M2M terminals are less likely to move over a wide range compared to mobile terminals, and are either fixedly installed or restricted to movement within a predetermined area.

  Here, a situation where mobile terminal 202A and M2M terminals 202Ba, 202Bb, 202Bc exist in cell CA will be described. Hereinafter, each of the mobile terminal 202A and the M2M terminals 202Ba, 202Bb, and 202Bc is also referred to as a wireless terminal device 202, and each of the M2M terminals 202Ba, 202Bb, and 202Bc is also referred to as an M2M terminal 202B.

  Here, a selection operation of a radio base station apparatus that is a communication connection destination of the radio terminal apparatus 202 when the radio terminal apparatus 202 is activated will be described with reference to FIG. FIG. 2 is an example of a sequence illustrating an operation flow when the wireless terminal device selects a wireless base station device that is a communication connection destination of itself when the wireless terminal device is activated in the communication system illustrated in FIG.

  Referring to FIG. 2, when radio terminal apparatus 202 existing in cell CA is activated, radio terminal apparatus 202 performs a frequency search for radio signals in a predetermined frequency range and detects neighboring cells such as cell CA. (Step S1).

  And the radio | wireless terminal apparatus 202 receives the self-cell information alert | reported from 101 A of radio base station apparatuses which are the periphery base stations which form the detected cell CA. The own cell information includes, for example, information (Master Information Block) used for specifying the radio base station apparatus 101A such as a radio signal bandwidth and a cell physical ID (step S2).

  Then, the wireless terminal device 202 identifies the wireless base station device 101A based on the “Master Information Block” received from the wireless base station device 101A and the ID assigned to the wireless base station device 101A, the wireless base station Information used for measurement of a radio signal transmitted from the device 101A and “System Information Block Type 1” including “Cell Selection Info” indicating a reference for the wireless terminal device to select a communication connection destination are included. The own cell information is received from the radio base station apparatus 101A. Further, “Cell Selection Info” includes, for example, an offset for adjusting the reception level defined in 3GPP TS 23.122 (step S3).

  And the radio | wireless terminal apparatus 202 measures the radio signal transmitted from 101 A of radio base station apparatuses based on the received own cell information (step S4). Then, the wireless terminal device 202 indicates that the received power of the wireless signal in the wireless terminal device is greater than or equal to a predetermined value as a reference for selecting the communication connection destination of the wireless terminal device in the received own cell information, for example. In step S5, it is determined whether or not the wireless base station device 101A that is the measurement target satisfies the criterion.

  When determining that the radio base station apparatus 101A satisfies the criterion (“Yes” in step S5), the radio terminal apparatus 202 selects the radio base station apparatus 101A as a communication connection destination (step S6). When the communication connection between the wireless terminal device 202 and the wireless base station device 101A is established, the wireless terminal device 202 transmits and receives various types of information using wireless signals to and from the wireless base station device 101A. be able to.

  On the other hand, if the wireless terminal device 202 determines that the wireless base station device 101A does not satisfy the standard (“No” in step S5), the wireless terminal device 202 is formed by a wireless base station device other than the wireless base station device 101A. A neighboring cell is detected (step S1), and the above operations such as measurement of a radio signal are repeated.

  By the way, although one mobile terminal is shown in FIG. 1, there may be many mobile terminals in the cell CA due to a dramatic increase in the number of mobile communication service subscribers in recent years. 1 shows three M2M terminals, there may be many devices in a predetermined area such as a factory, and there may be many M2M terminals in the cell CA. In these cases, access from a large number of radio terminal apparatuses 202 to the radio base station apparatus 101A may be concentrated, and there is a problem that a great load is applied to the radio base station apparatus 101A.

  Therefore, the communication system 401 including the M2M terminal 202B according to the first embodiment and the second embodiment of the present invention has the following configuration. Hereinafter, a communication system 401 including the M2M terminal 202B according to the first embodiment and the second embodiment of the present invention will be described.

<First Embodiment>
[Configuration and basic operation]
FIG. 3 is a diagram illustrating a configuration of a communication system including the wireless terminal device according to the first embodiment of the present invention.

  Referring to FIG. 3, a communication system 401 is a mobile communication system according to LTE (Long Term Evolution) standardized by 3GPP, for example, as in the comparative communication system 400 shown in FIG. Devices 101MA and 101MB and a core network (upper network) 301 are provided.

  Radio base station apparatuses 101MA and 101MB are, for example, macro base stations. The radio base station apparatus 101MA can communicate with the radio terminal apparatus 202 by forming a cell MCA and transmitting and receiving radio signals to and from the radio terminal apparatus 202 existing in the cell MCA. The radio base station apparatus 101MB can communicate with the radio terminal apparatus 202 by forming a cell MCB and transmitting and receiving radio signals to and from the radio terminal apparatus 202 existing in the cell MCB.

  The wireless terminal device 202 is a mobile terminal 202A or M2M terminals 202Ba, 202Bb, 202Bc. Here, a situation in which the mobile terminal 202A and the M2M terminals 202Ba, 202Bb, 202Bc exist in the cell MCA will be described.

  The communication system 401 further includes radio base station apparatuses 101FA, 101FB, 101FC, and 101FD provided in the cell MCA and around the M2M terminal 202B.

  Radio base station apparatuses 101FA, 101FB, 101FC, and 101FD are femto base stations, for example. The radio base station apparatus 101FA forms a cell FCA, the radio base station apparatus 101FB forms a cell FCB, the radio base station apparatus 101FC forms a cell FCC, and the radio base station apparatus 101FD forms a cell FCD.

  The radio base station apparatuses 101FA, 101FB, 101FC, and 101FD are assigned CSG-ID (Closed Subscriber Group Identity), and are radio terminal apparatuses 202 belonging to a predetermined subscriber group, that is, registered members. The wireless terminal device 202 operates in a closed access mode that permits communication.

  Here, CSG-ID is ID (identification) allocated to the radio | wireless terminal apparatus 202 and the radio | wireless base station apparatus of closed access mode and a hybrid mode. By this CSG-ID, the wireless terminal device 202 can identify whether it is a member or a non-member for a certain wireless base station device.

  FIG. 4 is a diagram illustrating an example of the CSG-ID assigned to the radio base station apparatus illustrated in FIG. 3.

  Referring to FIG. 4, CSG-ID of radio base station apparatus 101FA is 1111, CSG-ID of radio base station apparatus 101FB is 2222, CSG-ID of radio base station apparatus 101FC is 3333, and wireless The CSG-ID of the base station apparatus 101FD is 4444.

  Further, the M2M terminal 202B maintains a list (White list), and the CSG-ID assigned to itself is written in this list.

  Here, the wireless terminal device holds, for example, “Allowed CSG list” and “Operator CSG list” as lists in which CSG-IDs are written. That is, the “White list” is configured by these “Allowed CSG list” and “Operator CSG list”. Then, the wireless terminal device measures a wireless signal transmitted from a surrounding wireless base station device (hereinafter also referred to as “peripheral base station”), and based on the measured reception level of the wireless signal, etc. A function of autonomously selecting a wireless base station device (Autonomous Search), and the CSG-ID of the wireless base station device autonomously selected by the wireless terminal device is added to the “Allowed CSG list” (3GPP TS 24.301).

  However, in this case, the wireless terminal device uses a wireless base station device other than a specific wireless base station device to which the same CSG-ID as the CSG-ID assigned to itself is assigned as a wireless base station device that is a communication connection destination. In some cases, the wireless base station device may be selected autonomously, and in an area where a large number of wireless terminal devices exist, the wireless base station device may be congested when the same wireless base station device is selected as a communication connection destination.

  For this reason, in the M2M terminal 202B according to the first embodiment of the present invention, “Allowed CSG list” is invalidated and “Autonomous Search” is invalidated, and the wireless communication destination of the M2M terminal 202B It is preferable that the base station apparatus is set so as not to be autonomously selected.

  For example, when the M2M terminal 202B set in this way performs cell reselection for selecting a radio base station apparatus to which the M2M terminal 202B in the idle state is a communication connection destination, Rather than autonomously selecting a wireless base station device to be a connection destination, base station information related to neighboring base stations is received from a serving base station that is a wireless base station device to which the communication is connected. And M2M terminal 202B selects the wireless base station apparatus used as a communication connection destination from the periphery base stations corresponding to the received base station information. A more detailed operation procedure will be described later.

  The “Operator CSG list” describes the CSG-ID assigned to the M2M terminal 202B. This CSG-ID is designated by, for example, a communication carrier. In addition, when there is a radio base station apparatus in which a communication connection is newly established with the M2M terminal 202B, such as when the M2M terminal 202B is newly activated or when the M2M terminal 202B moves to a new cell, The M2M terminal 202B executes an attach procedure (Attach Procedure) that is a terminal registration process for an MME (Mobility Management Entity) in the core network 301. In such a case, when the attach process of the M2M terminal 202B is performed, the host device in the core network 301 notifies the M2M terminal 202B of information such as the CSG-ID of the radio base station device, and the M2M terminal 202B Updates the “Operator CSG list” based on the information.

  FIG. 5 is a diagram illustrating an example of the CSG-ID assigned to the wireless terminal device illustrated in FIG. 3.

  Referring to FIG. 5, the CSG-ID of M2M terminal 202Ba is 1111, the CSG-ID of M2M terminal 202Bb is 2222, and the CSG-ID of M2M terminal 202Bc is 3333.

  When the M2M terminal 202B is activated, the M2M terminal 202B refers to the list, determines that the radio base station apparatus assigned the same CSG-ID as the CSG-ID assigned to the M2M terminal 202B is a specific radio base station apparatus, A process of selectively establishing a communication connection with the specific radio base station apparatus is performed.

  That is, the M2M terminal 202Ba whose CSG-ID is 1111 establishes a communication connection with the radio base station apparatus 101FA whose CSG-ID is 1111, and the M2M terminal 202Bb whose CSG-ID is 2222 is also CSG. -A communication connection is established with the radio base station apparatus 101FB with ID 2222, and the M2M terminal 202Bc with CSG-ID 3333 communicates with the radio base station apparatus 101FC with CSG-ID 3333. Establish.

  Note that the M2M terminal 202B does not necessarily establish a communication connection only with a radio base station apparatus to which the same CSG-ID as the CSG-ID assigned to itself is assigned. For example, even when different CSG-IDs are assigned between the M2M terminal 202B and the radio base station apparatus, the subscription in which communication with the radio base station apparatus is permitted by the higher-level apparatus in the core network 301 If the M2M terminal 202B belongs to the user group, the M2M terminal 202B can establish a communication connection with the radio base station apparatus.

  In addition, there are cases where a plurality of different CSG-IDs such as “1111” and “2222” are assigned to the M2M terminal 202B. In such a case, the M2M terminal 202B can communicate with any one of the radio base station apparatus with the CSG-ID “1111” and the radio base station apparatus with the CSG-ID “2222”. It is possible to select as a connection destination radio base station apparatus.

  In addition, when a communication connection is established between the M2M terminal 202B and a specific radio base station device, the specific radio base station device performs a peripheral operation on a cell formed by a peripheral radio base station device other than itself. Cell information, that is, base station information is transmitted to the M2M terminal 202B, for example, periodically.

  At this time, the radio base station apparatus 101FA transmits, to the M2M terminal 202B, neighboring cell information about a cell formed by a radio base station apparatus whose permission target is the same subscriber group as the subscriber group to which communication is permitted. .

  Then, the M2M terminal 202B determines that the power of the radio base station apparatus with which the communication connection is established decreases when the reception power of the radio wave received from the radio base station apparatus with which the communication connection is established decreases due to its own movement. When changing the wireless base station device that is the communication connection destination to another wireless base station device, such as when turned off, a new wireless base station device is selected based on the acquired neighboring cell information.

  Referring to FIG. 3 again, it is assumed that mobile terminal 202A is not assigned a CSG-ID and is a non-member for radio base station apparatuses 101FA, 101FB, 101FC, and 101FD. When the mobile terminal 202A is activated, the mobile terminal 202A selects a radio base station apparatus to be a communication connection destination by the same operation as the radio terminal apparatus 202 shown in FIG.

  That is, with reference to FIG. 2, the mobile terminal 202A first performs a frequency search for a radio signal in a predetermined frequency range to detect neighboring cells (step S1). Then, the mobile terminal 202A sequentially receives its own cell information broadcast from the radio base station apparatuses 101MA, 101MB, 101FA, 101FB, 101FC, and 101FD that are neighboring base stations that form the detected neighboring cells (Step S2 and Step S2). S3).

  Then, the mobile terminal 202A measures the radio signal transmitted from the neighboring base station based on the received own cell information (step S4). Then, the mobile terminal 202A determines whether or not the radio base station apparatus that is the measurement target satisfies the criterion indicated in “Cell Selection Info” (step S5), and if the criterion is satisfied (step S5). In step S6), the wireless base station device to be measured is selected as a communication connection destination.

  Specifically, as a reference for selecting a communication connection destination of the mobile terminal 202A, it is a case where “Cell Selection Info” indicates that the received power of the radio signal at the mobile terminal 202A is equal to or greater than a predetermined value, for example, When the received power from the radio base station apparatus 101MA in the mobile terminal 202A is equal to or greater than a predetermined value, the mobile terminal 202A selects the radio base station apparatus 101MA as a communication connection destination and establishes communication with the radio base station apparatus 101MA. Establish a communication connection between them.

  Further, for example, even when the mobile terminal 202A moves to the cell FCA and the reception power at the mobile terminal 202A of the radio signal transmitted by the radio base station apparatus 101FA exceeds a predetermined value, the radio base station apparatus 101FA is closed-accessed. May be operating in mode. In this case, since the mobile terminal 202A is a non-member for the radio base station apparatus 101FA, the communication connection between the mobile terminal 202A and the radio base station apparatus 101FA is not established, and the mobile terminal 202A Select the device as the communication destination.

[M2M terminal configuration]
FIG. 6 is a diagram illustrating the configuration of the wireless terminal device according to the first embodiment of the present invention.

  Referring to FIG. 6, M2M terminal 202 </ b> B according to the first embodiment of the present invention includes a radio device 21 and a signal processing unit 22. The radio device 21 includes an antenna 31, a circulator 32, a receiving unit 33, and a transmitting unit 34. The signal processing unit 22 includes an information acquisition unit 36, a determination unit 37, a communication control unit 38, and a storage unit 39.

  The circulator 32 outputs the radio signal from the radio base station apparatuses 101MA, 101MB, 101FA, 101FB, 101FC, and 101FD received by the antenna 31 to the receiving unit 33, and receives the radio signal received from the transmitting unit 34 from the antenna 31. Output to.

  The receiving unit 33 frequency-converts the radio signal received from the circulator 32 into a baseband signal or IF (Intermediate Frequency) signal, converts the frequency-converted signal into a digital signal, and outputs the digital signal to the signal processing unit 22. The transmission unit 34 converts the digital signal received from the communication control unit 38 into an analog signal, converts the frequency of the converted analog signal into a radio signal, and outputs the radio signal to the circulator 32.

  The information acquisition unit 36 of the signal processing unit 22 acquires a digital signal of own cell information broadcast from the radio base station apparatuses 101MA, 101MB, 101FA, 101FB, 101FC, and 101FD, and applies OFDM ( Various signal processing such as FFT (Fast Fourier Transform) in an Orthogonal Frequency Division Multiplex (FFT) system is performed and output to the determination unit 37. The information acquisition unit 36 includes, for example, information (Master Information Block) used for specifying a radio base station apparatus such as a radio signal bandwidth and a cell physical ID, and CSG-assigned to each radio base station apparatus. The own cell information including information such as ID (System Information Block Type 1) is acquired as base station information.

  The storage unit 39 is a list in which the CSG-ID assigned to the own M2M terminal 202B and the CSG-ID of the radio base station apparatus that has established communication connection with the own M2M terminal 202B in the past, that is, “ One or more Operator CSG lists ”are held (3GPP TS 24.301).

  When the information stored in the list stored in the storage unit 39 includes the ID of the wireless base station device that has established communication connection with the M2M terminal 202B in the past, the information acquisition unit 36 receives the information from the wireless base station device. Among the notified own cell information, the own cell information related to the radio base station apparatus with which communication connection has been established in the past is preferentially acquired.

  The determination unit 37 receives the own cell information from the information acquisition unit 36, and whether or not the radio base station apparatus corresponding to the own cell information operates in the closed access mode or the hybrid mode, that is, the CSG-ID is assigned. Determine whether or not.

  Then, when the corresponding radio base station device operates in the closed access mode or the hybrid mode, the determination unit 37 determines the CSG assigned to the corresponding radio base station device based on the received own cell information. -It is determined whether or not the ID is the same as the CSG-ID assigned to its own M2M terminal 202B.

  Then, when the CSG-ID assigned to the corresponding radio base station apparatus and the CSG-ID assigned to the own M2M terminal 202B are the same, the determination unit 37 performs the corresponding radio. The base station apparatus determines to perform processing for establishing a communication connection. Then, the determination unit 37 outputs the determination content to the communication control unit 38.

  On the other hand, when the corresponding radio base station device does not operate in the closed access mode or the hybrid mode, or when the corresponding radio base station device does not operate, the determination unit 37 and the CSG-ID assigned to the corresponding radio base station device and its own M2M terminal 202B When the CSG-ID assigned to the mobile station is different from the CSG-ID assigned to the mobile station, it is determined to newly acquire own cell information related to another radio base station device. Then, the determination unit 37 outputs the determination content to the information acquisition unit 36.

  The communication control unit 38 receives a determination content indicating that processing for establishing a communication connection with a specific radio base station apparatus is performed from the determination unit 37, and transmits various information via the radio unit 21 to the specific radio base station device. A communication connection with the specific radio base station apparatus is established by transmitting / receiving to / from the station apparatus.

  FIG. 7 is a diagram illustrating a correspondence between a process for establishing a communication connection performed in the communication system including the wireless terminal device according to the first embodiment of the present invention and each layer in the communication protocol.

  7, M2M terminal 202B and MME in communication system 401 are, for example, a NAS (Non-Access Stratum) layer, an RRC (Radio Resource Control) layer, an RLC (Radio Link Control) layer, and a MAC (Media Access Control). ) Operates according to a communication protocol having a layer and a PHY layer. Here, the NAS layer is the highest layer, and the PHY layer is the lowest layer.

  Also, the radio base station apparatus 101FA operates according to a communication protocol having an RRC layer, an RLC layer, a MAC layer, and a PHY layer. Here, the RRC layer is the highest layer and the PHY layer is the lowest layer.

  For example, when processing for establishing a communication connection between the M2M terminal 202Ba and the radio base station apparatus 101FA is performed, the communication control unit 38 of the M2M terminal 202Ba camps on the radio base station apparatus 101FA according to the RRC layer. Send a camp request to execute the process. Then, messages such as requests and responses according to the RRC layer are exchanged between the M2M terminal 202Ba and the radio base station apparatus 101FA, and a communication connection is established between the M2M terminal 202Ba and the radio base station apparatus 101FA. Is done.

  Further, as described above, when the M2M terminal 202Ba is newly activated or when the M2M terminal 202Ba moves to a new cell, the M2M terminal 202Ba performs terminal registration processing with respect to the MME in the core network 301. The attach process is executed. At this time, the communication control unit 38 of the M2M terminal 202Ba transmits an attach request for executing the attach process to the MME according to the NAS layer. Then, messages such as requests and responses according to the NAS layer are exchanged between the M2M terminal 202Ba and the MME, and an attach process is executed between the M2M terminal 202Ba and the core network 301.

  As described above, when a communication connection is established between the M2M terminal 202B and the radio base station apparatus, the host apparatus in the core network 301 relates to the radio base station apparatus at the time of performing an attach process or the like. The information is notified to the M2M terminal 202B, and the M2M terminal 202B adds the ID of the radio base station apparatus and the like to the list held in the storage unit 39 based on the information.

[Operation]
Next, regarding the operation when the M2M terminal 202B according to the first embodiment of the present invention selects the radio base station apparatus that is the communication connection destination of itself, “the operation of selecting the communication connection destination at the time of activation (part 1) ””, “Communication Connection Destination Selection Operation at Startup (Part 2)”, and “Communication Connection Destination Selection Operation when Changing Communication Connection Destination”.

  Note that the M2M terminal 202B and the radio base station apparatus according to the first embodiment of the present invention read and execute a program including each step of the following sequences from a memory (not shown). This program can be installed externally. The installed program is distributed in a state stored in a recording medium, for example.

(A) Communication connection destination selection operation at startup (part 1)
FIG. 8 illustrates a case where, in the communication system including the wireless terminal device according to the first embodiment of the present invention, when the wireless terminal device is activated, the wireless terminal device selects a wireless base station device as its communication connection destination It is an example of the sequence which shows the flow of operation | movement.

  Referring to FIG. 8, first, when the M2M terminal 202B is activated, the information acquisition unit 36 of the M2M terminal 202B is a wireless base station apparatus that has established a communication connection with its own M2M terminal 202B in the past. It is determined whether or not a list in which IDs and the like are written is held in the storage unit 39 (step S11).

  When the list is held (“Yes” in step S11), the information acquisition unit 36 searches for the transmission frequency of the radio base station apparatus corresponding to the ID or the like described in the list. For example, when the ID of the radio base station apparatus 101FA is written in the list, the information acquisition unit 36 searches for the transmission frequency of the radio base station apparatus 101FA. If the IDs of a plurality of radio base station devices are described in the same list, the information acquisition unit 36 searches for the transmission frequency for each of the plurality of radio base station devices (step S12). .

  Next, whether the information acquisition unit 36 holds in the storage unit 39 a list other than the list, that is, a list in which IDs or the like of radio base station apparatuses that have not yet been searched for transmission frequency search are recorded. It is determined whether or not (step S13).

  If another list is stored in the storage unit 39 (“Yes” in step S13), the information acquisition unit 36 is connected to the radio base station apparatus corresponding to the ID or the like described in the other list. A transmission frequency is searched (step S12).

  On the other hand, when the other list is not held in the storage unit 39, that is, the transmission frequency search has already been performed for the radio base station apparatuses corresponding to all IDs and the like recorded in the list held in the storage unit 39. In the case (“No” in step S13), the information acquisition unit 36 receives the radio signal of the searched transmission frequency among the own cell information broadcast from the radio base station apparatuses 101MA, 101MB, 101FA, 101FB, 101FC, and 101FD. By doing so, the own cell information broadcast from the radio base station apparatus corresponding to the ID or the like described in the list is preferentially received (step S14). Here, it is assumed that M2M terminal 202B preferentially receives its own cell information broadcast from radio base station apparatus 101FA. This own cell information includes information (Master Information Block) used for specifying the radio base station apparatus 101FA, such as the bandwidth of the radio signal or the physical ID of the cell.

  Next, the information acquisition unit 36 identifies the radio base station apparatus 101FA based on the received own cell information, and the CSG-ID assigned to the radio base station apparatus 101FA from the identified radio base station apparatus 101FA. The own cell information including the information (System Information Block Type 1) is received (step S15).

  Next, the determination unit 37 determines whether the radio base station apparatus 101FA corresponding to the own cell information operates in the closed access mode or the hybrid mode based on the own cell information received by the information acquisition unit 36, that is, It is determined whether or not “csg-Indication” that is an IE (Information element) in “System Information Block Type 1” is “true” (step S16).

  When radio base station apparatus 101FA operates in the closed access mode or the hybrid mode, that is, when “csg-Indication” is “true” (“Yes” in step S16), determination unit 37 receives Based on the own cell information, it is determined whether or not the CSG-ID assigned to the radio base station apparatus 101FA is the same as the CSG-ID assigned to the own M2M terminal 202B (step S17).

  When the CSG-ID assigned to the radio base station apparatus 101FA and the CSG-ID assigned to the own M2M terminal 202B are the same (“Yes” in step S17), the determination unit 37 Decides to perform processing for establishing communication connection with the radio base station apparatus 101FA, and outputs the decision content to the communication control unit 38. And the communication control part 38 receives the said content of determination, and performs the process for communication connection establishment between self M2M terminal 202B and wireless base station apparatus 101FA (step S18).

  On the other hand, when the radio base station apparatus corresponding to the received own cell information does not operate in the closed access mode or the hybrid mode, that is, when “csg-Indication” is not “true” (“No” in step S16), or Although “csg-Indication” is “true” (“Yes” in step S16), the CSG-ID assigned to the radio base station apparatus is different from the CSG-ID assigned to the M2M terminal 202B. If so ("No" in step S17), the determination unit 37 determines whether there is self-cell information that has not been received among the self-cell information corresponding to the searched transmission frequency (step S19).

  Then, if there is own cell information that has not been received (“Yes” in step S19), the determination unit 37 determines to newly receive the own cell information, and sends the determination content to the information acquisition unit 36. Output. And the information acquisition part 36 receives the said determination content, and receives the said own cell information newly (step S14 and step S15), and the judgment part 37 is the own cell newly received by the information acquisition part 36 It is determined whether or not the radio base station apparatus corresponding to the information operates in the closed access mode or the hybrid mode (step S16).

  On the other hand, when there is no own cell information that has not been received (“No” in step S19), the information acquisition unit 36 searches for a transmission frequency for a radio base station apparatus that is not listed (step S20). .

  That is, for example, if none of the IDs of the radio base station apparatuses 101MA, 101MB, 101FA, 101FB, 101FC, and 101FD are listed, the information acquisition unit 36 performs a frequency search for a radio signal within a predetermined frequency range. To detect neighboring cells. And the information acquisition part 36 receives the own cell information alert | reported from the periphery base station which forms the detected periphery cell. Then, the determination unit 37 measures the radio signal transmitted from the neighboring base station based on the received own cell information, and communicates with the radio base station apparatus that is the communication connection destination in accordance with the reference indicated in “Cell Selection Info”. Select.

  Further, the information acquisition unit 36 also records the list including the ID of the radio base station apparatus and the like in the list in the same manner as described above even when the storage unit 39 does not hold the list itself (“No” in step S11). A search for a transmission frequency is performed for a radio base station apparatus that has not been performed (step S20).

  For example, when the M2M terminal 202B is turned on again after being turned off, the selection operation shown in the above-described steps S11 to S20 is performed again. At this time, a radio base station apparatus that does not operate in the closed access mode or the hybrid mode, that is, a radio base station apparatus determined as “No” in step S16, or a CSG-ID in which the CSG-ID is assigned to the M2M terminal 202B Even if the radio base station apparatus does not match the radio base station apparatus, that is, the radio base station apparatus determined to be “No” in step S17, the radio base station apparatus is listed in the list held by the M2M terminal 202B, The own cell information regarding this radio base station apparatus is acquired, and the M2M terminal 202B determines whether “csg-Indication” is “true” (step S16) and whether the CSG-IDs match. (Step S17) is performed again.

  Therefore, the M2M terminal 202B according to the present invention determines whether or not “csg-Indication” is “true” (step S16) and whether or not the CSG-IDs match (step S17). The radio base station apparatus determined as “No” is set to be excluded from the selection operation target of the communication connection destination radio base station apparatus for a certain period, and is configured to prevent repeated useless selection operations. It is preferred that

(B) Communication connection destination selection operation at startup (part 2)
In “(a) Operation for selecting communication connection destination at start-up (part 1)” described above, information acquisition unit 36 searches for a transmission frequency for one or a plurality of radio base station apparatuses listed in the list, The case has been described in which it is determined whether or not the wireless base station apparatus indicated by the list satisfies the condition as the communication connection destination using the search result. On the other hand, in “(b) Operation for selecting communication connection destination at start-up (part 2)”, transmission frequency search and radio base station apparatus communicate one by one for the radio base station apparatuses listed. A case where it is determined whether or not a condition as a connection destination is satisfied will be described.

  FIG. 9 illustrates a case where, in the communication system including the wireless terminal device according to the first embodiment of the present invention, when the wireless terminal device starts up, the wireless terminal device selects a wireless base station device that is a communication connection destination of itself. It is an example of the sequence which shows the flow of operation | movement.

  Referring to FIG. 9, first, when the M2M terminal 202B is activated, the information acquisition unit 36 of the M2M terminal 202B is a wireless base station apparatus that has established a communication connection with its own M2M terminal 202B in the past. It is determined whether or not a list in which IDs and the like are stored is held in the storage unit 39 (step S21).

  And when the said list | wrist is hold | maintained (in step S21, "Yes"), the information acquisition part 36 is one of the radio base station apparatuses corresponding to 1 or several ID etc. which were described in the said list | wrist. The transmission frequency is searched for the radio base station apparatus. Here, it is assumed that the information acquisition unit 36 searches for a transmission frequency for the radio base station apparatus 101FA, for example (step S22).

  Next, the information acquisition unit 36 receives the radio signal of the searched transmission frequency from the own cell information broadcast from the radio base station apparatuses 101MA, 101MB, 101FA, 101FB, 101FC, and 101FD, and records it in the list. The self-cell information broadcast from the radio base station apparatus 101FA corresponding to the ID etc., and including the “Master Information Block”, is preferentially received (step S23).

  Next, the information acquisition unit 36 identifies the radio base station apparatus 101FA based on the received own cell information, and the CSG-ID assigned to the radio base station apparatus 101FA from the identified radio base station apparatus 101FA. Own cell information including the information (System Information Block Type 1) is received (step S24).

  Next, the determination unit 37 determines whether the radio base station apparatus 101FA corresponding to the own cell information operates in the closed access mode or the hybrid mode based on the own cell information received by the information acquisition unit 36, that is, It is determined whether or not “csg-Indication” that is an IE (Information element) in “System Information Block Type 1” is “true” (step S25).

  When radio base station apparatus 101FA operates in the closed access mode or the hybrid mode, that is, when “csg-Indication” is “true” (“Yes” in step S25), determination unit 37 receives Based on the own cell information, it is determined whether or not the CSG-ID assigned to the radio base station apparatus 101FA is the same as the CSG-ID assigned to the own M2M terminal 202B (step S26).

  When the CSG-ID assigned to the radio base station apparatus 101FA and the CSG-ID assigned to the own M2M terminal 202B are the same (“Yes” in step S26), the determination unit 37 Decides to perform processing for establishing communication connection with the radio base station apparatus 101FA, and outputs the decision content to the communication control unit 38. And the communication control part 38 receives the said content of determination, and performs the process for communication connection establishment between self M2M terminal 202B and wireless base station apparatus 101FA (step S27).

  On the other hand, when the radio base station apparatus corresponding to the received own cell information does not operate in the closed access mode or the hybrid mode, that is, when “csg-Indication” is not “true” (“No” in step S25). Or, although “csg-Indication” is “true” (“Yes” in step S25), the CSG-ID assigned to the radio base station apparatus and the CSG-ID assigned to the M2M terminal 202B Are different ("No" in step S26), the determination unit 37 is not receiving its own cell information among the own cell information broadcast from the radio base station apparatus corresponding to the ID or the like described in the list. It is determined whether or not there is (step S28).

  If there is own cell information that has not been received (“Yes” in step S28), it is decided to newly receive this own cell information, and the decision content is output to the information acquisition unit 36. And the information acquisition part 36 searches the transmission frequency about the radio base station apparatus which has not yet searched for the transmission frequency among the radio base station apparatuses shown in the list in response to the determination content (step S22). And the information acquisition part 36 repeats said operation | movement, such as receiving the own cell information alert | reported from the wireless base station apparatus which a list | wrist shows by receiving the radio signal of the searched transmission frequency.

  On the other hand, when there is no own cell information that has not been received (“No” in step S28), the information acquisition unit 36 is a list other than the list, that is, a radio that has not yet been searched for a transmission frequency search. It is determined whether or not a list in which the IDs of the base station devices are stored in the storage unit 39 (step S29).

  If another list is stored in the storage unit 39 (“Yes” in step S29), the information acquisition unit 36 is connected to the radio base station apparatus corresponding to the ID or the like described in the other list. A transmission frequency is searched (step S22).

  On the other hand, when the other list is not held in the storage unit 39, that is, the transmission frequency search has already been performed for the radio base station apparatuses corresponding to all IDs and the like recorded in the list held in the storage unit 39. In the case ("No" in step S29), the information acquisition unit 36 searches for a transmission frequency for a radio base station apparatus not listed (step S30).

  Also, the information acquisition unit 36 records the list in the list in the same manner as described above even when the list itself in which the IDs of the radio base station devices are recorded is not stored in the storage unit 39 (“No” in step S21). A search for a transmission frequency is performed for a radio base station apparatus that has not been performed (step S30).

(C) Communication connection destination selection operation when changing communication connection destination Next, the M2M terminal 202B establishes a communication connection from the radio base station apparatus with which the communication connection has been established with itself to another radio base station apparatus. The operation of selecting a communication connection destination when changing the destination will be described. Here, a situation will be described in which the M2M terminal 202Ba performs a cell reselection operation for changing the communication connection destination from the radio base station apparatus 101FA to the radio base station apparatus 101FB.

  FIG. 10 is a diagram illustrating an exemplary sequence of a cell reselection operation of the wireless terminal device according to the first embodiment of the present invention.

  Here, for example, due to the movement of the M2M terminal 202Ba, the reception power at the M2M terminal 202Ba of the radio signal transmitted from the radio base station apparatus that has established communication connection with the M2M terminal 202Ba is reduced, and the cell re-transmission by the M2M terminal 202Ba is performed. Assume that a selection operation is performed. Further, it is assumed that the M2M terminal 202Ba has “Autonomous Search” disabled.

  Referring to FIG. 10, first, when M2M terminal 202Ba determines to newly select radio base station apparatus 101FA as a communication partner, it receives broadcast information transmitted from radio base station apparatus 101FA (step S31). The contents of the received notification information are stored (step S32). This broadcast information includes neighboring cell information and information for performing cell reselection.

  Next, the M2M terminal 202Ba executes an attach procedure (Attach Procedure), which is a terminal registration process, in order to notify the MME and the like in the core network 301 that it has moved to a new cell FCA (step S33).

  Next, the M2M terminal 202Ba starts measuring the reception power of the radio signal transmitted from the radio base station apparatus 101FA which is a serving base station. That is, the M2M terminal 202Ba measures the received power of the cell FCA that is a serving cell. For example, the M2M terminal 202Ba measures received power using a pilot signal included in the radio signal (step S34).

    Next, the M2M terminal 202Ba calculates an S value (Cell Selection Criterion S) that is an evaluation value of the serving cell, and performs an S value determination (step S35).

  When the S value of the serving cell satisfies the predetermined condition (“Yes” in step S35), the M2M terminal 202Ba determines the reception power of the radio signal transmitted from the neighboring base station indicated by the broadcast information at the frequency indicated by the broadcast information. Start measurement.

  Here, the radio base station apparatus 101FA has a CSG-ID that is the same as the CSG-ID assigned to the radio base station apparatus to which the same subscriber group as the subscriber group to which communication is permitted, that is, the CSG-ID assigned to the radio base station apparatus 101FA. Search for assigned peripheral base stations.

  For example, the radio base station apparatus 101FA stores in advance CSG-IDs assigned to neighboring radio base station apparatuses, and is assigned with the same CSG-ID as the CSG-ID assigned to itself. Search for devices. Here, it is assumed that the CSG-ID assigned to the radio base station apparatus 101FA is 1111 and the CSG-ID assigned to the radio base station apparatus 101FB and the radio base station apparatus 101FC is also 1111.

  Then, the radio base station apparatus 101FA sets a frequency to be measured by the M2M terminal 202Ba communicating with itself and a measurement cell, that is, a neighboring base station that transmits a radio signal of the frequency, and sets the setting contents as neighboring cell information. That is, base station information is included in broadcast information and transmitted to the M2M terminal 202B. Here, the radio base station apparatus 101FA sets the searched radio base station apparatuses 101FB and 101FC as measurement target radio base station apparatuses.

  Since the “Autonomous Search” is disabled, the M2M terminal 202B performs cell reselection from the neighboring base stations indicated by the broadcast information without autonomously selecting the communication base station of the communication connection destination. Do. That is, the M2M terminal 202Ba measures the received power of the cells FCB and FCC, which are neighboring cells searched by the radio base station apparatus 101FA, in addition to the serving cell. For example, the M2M terminal 202Ba measures received power using a pilot signal included in the radio signal (step S36).

  Next, the M2M terminal 202Ba calculates an S value that is an evaluation value of a neighboring cell, and performs S value determination (step S37).

  When the S value of the neighboring cell satisfies the predetermined condition (“Yes” in step S37), the M2M terminal 202Ba uses the measurement result of the serving cell and the neighboring cell to arrange the serving cell and the neighboring cell, for example, in the order of good reception power quality. Ranking is performed (step S38).

  Next, when the highest cell is not the serving cell as a result of the ranking (“Yes” in step S39), the M2M terminal 202Ba performs cell reselection to the highest cell. That is, the M2M terminal 202Ba receives own cell information broadcast from a radio base station apparatus corresponding to the highest neighboring cell, for example, the radio base station apparatus 101FB (step S40), and stores the content of the received own cell information. (Step S41).

  Next, the M2M terminal 202Ba determines whether or not the radio base station apparatus 101FB operates in the closed access mode or the hybrid mode based on the received own cell information, that is, IE (Information element) in “System Information Block Type 1”. It is determined whether or not “csg-Indication” is “true” (step S42).

  The M2M terminal 202Ba receives the radio base station apparatus 101FB when it operates in the closed access mode or the hybrid mode, that is, when “csg-Indication” is “true” (“Yes” in step S42). Based on the own cell information, it is determined whether or not the CSG-ID assigned to the radio base station apparatus 101FB is the same as the CSG-ID assigned to itself (step S43).

  When the CSG-ID assigned to the radio base station apparatus 101FB and the CSG-ID assigned to the M2M terminal 202Ba are the same (“Yes” in step S43), the M2M terminal 202Ba The station apparatus 101FB is selected as a communication connection destination.

  Next, in order to notify the MME or the like in the core network 301 that the wireless terminal device 202 has moved to a new cell FCB, the wireless terminal device 202 executes an attach process that is a terminal registration process (step S44).

  In the communication system 401 including the M2M terminal 202B according to the first embodiment of the present invention described above, the case where the radio base station apparatuses 101FA, 101FB, 101FC, and 101FD operate in the closed access mode has been described. However, the wireless base station devices 101FA, 101FB, 101FC, and 101FD are set to operate in a hybrid mode that permits communication to both the member wireless terminal device 202 and the non-member wireless terminal device 202. It is also possible.

  In this case, the M2M terminal 202Ba whose CSG-ID is 1111 establishes a communication connection with the radio base station apparatus 101FA whose CSG-ID is 1111 as in the above-described first embodiment of the present invention. Process to do. For example, when the mobile terminal 202A moves into the cell FCA, even if the mobile terminal 202A is a non-member for the radio base station apparatus 101FA, a communication connection is established with the radio base station apparatus 101FA. Can be processed.

  Further, in the communication system 401 according to the first embodiment of the present invention described above, the situation has been described in which the radio base station apparatuses 101FA, 101FB, 101FC, and 101FD to which CSG-IDs are assigned are femto base stations. These radio base station apparatuses 101FA, 101FB, 101FC, and 101FD may be macro base stations, for example.

  By the way, there are cases where a large number of wireless terminal devices exist in a specific area due to a dramatic increase in the number of mobile communication service subscribers in recent years. In addition, in the M2M network described above, devices equipped with wireless devices rarely move over a wide range. For example, in an area where there are many devices such as in a factory, a large number of wireless terminal devices are always in a specific area. Exists. In these cases, access from a large number of wireless terminal devices or devices equipped with wireless devices to the wireless base station device forming the area may be concentrated, and there is a problem in that a large load is applied to the wireless base station device. is there.

  On the other hand, in M2M terminal 202B according to the first embodiment of the present invention, determination unit 37 determines whether or not the radio base station apparatus is a specific radio base station apparatus. Further, the communication control unit 38 performs processing for selectively establishing a communication connection with the radio base station device determined by the determination unit 37 to be a specific radio base station device.

  In this way, by restricting the communication connection destination of the M2M terminal 202B to a specific radio base station apparatus, the plurality of M2M terminals are not significantly affected without affecting the network by other radio base station apparatuses such as a public mobile communication network. A network including the terminal 202B and a specific radio base station apparatus can be flexibly constructed.

  In addition, as described above, since a communication connection is established between the M2M terminal 202B and a specific radio base station apparatus in a restricted network, a large number of M2M terminals 202B exist in a specific area. Even if it exists, it can prevent that wireless base station apparatuses other than the said specific wireless base station apparatus will be in a congestion state, and can reduce the load concerning this wireless base station apparatus. For this reason, even when the mobile terminal 202A such as a mobile phone has moved into the specific area, the communication at the mobile terminal 202A can be prevented from being disconnected, and the communication can be stabilized. .

  Further, in the first embodiment of the present invention, the radio base station apparatus can perform an operation of permitting the M2M terminal 202B belonging to a predetermined subscriber group to communicate with itself, and the M2M terminal The determination unit 37 of 202B determines that the radio base station apparatus that is a permission target for the subscriber group to which the own M2M terminal 202B belongs is a specific radio base station apparatus.

  With such a configuration, the M2M terminal 202B and a radio base station apparatus suitable as a communication connection destination of the M2M terminal 202B can be easily associated in advance.

  Also, in the M2M terminal 202B according to the first embodiment of the present invention, the storage unit 39 stores a radio base station apparatus that has established a communication connection with the own M2M terminal 202B in the past. The determination unit 37 preferentially determines whether the radio base station device stored in the storage unit 39 is a specific radio base station device.

  With such a configuration, it is determined whether or not the M2M terminal 202B is a specific radio base station apparatus preferentially from the radio base station apparatus that is likely to be a communication connection destination of the M2M terminal 202B. Processing for judgment can be reduced.

  Further, in the M2M terminal 202B according to the first embodiment of the present invention, the information acquisition unit 36 receives information other than the serving base station from the serving base station that is the radio base station apparatus that is the communication connection destination of its own M2M terminal 202B. Base station information related to the radio base station apparatus is acquired. In addition, when the determination unit 37 changes the communication connection destination from the serving base station to another wireless base station device by the own M2M terminal 202B, the wireless base station device corresponding to the base station information acquired by the information acquisition unit 36 The wireless base station device of the communication connection destination is selected from the list.

  As described above, since the communication connection destination of the M2M terminal 202B is selected from the wireless base station devices corresponding to the base station information transmitted from the serving base station, wireless base station devices other than the specific wireless base station device communicate with each other. It can be prevented that the connection destination is selected.

  In addition, the M2M terminal 202B according to the first embodiment of the present invention disables Autonomous Search defined by 3GPP (Third Generation Partnership Project).

  As described above, since “Autonomous Search” of the M2M terminal 202B is disabled, a wireless base station device other than the specific wireless base station device is automatically selected as a communication connection destination of the M2M terminal 202B. Can be prevented.

  In the first embodiment of the present invention, a specific radio base station apparatus permits communication to both a radio terminal apparatus belonging to a predetermined subscriber group and a radio terminal apparatus belonging to a different subscriber group. It is also possible to operate in hybrid mode.

  In such a configuration, when a mobile terminal 202A such as a mobile phone that does not belong to a predetermined subscriber group moves into a cell formed by a specific radio base station apparatus, communication at the mobile terminal 202A is disconnected. Can be prevented.

  Further, in the first embodiment of the present invention, the radio base station apparatus can perform an operation of permitting the M2M terminal 202B belonging to a predetermined subscriber group to communicate with itself, and the M2M terminal The serving base station, which is the wireless base station device 202B that is the communication connection destination, of the base station information related to the wireless base station device that is the target of permission for the subscriber group to which communication is permitted among the wireless base station devices other than itself. Transmit to the M2M terminal 202B. In addition, when the M2M terminal 202B changes the communication connection destination from the serving base station to another radio base station device, the M2M terminal 202B selects the radio of the communication connection destination from among the radio base station devices corresponding to the base station information received from the serving base station. Select a base station device.

  As described above, the communication connection destination candidates of the M2M terminal 202B are limited to the wireless base station apparatuses that allow the subscriber group to which the M2M terminal 202B belongs, and then the communication terminal is selected by the wireless terminal apparatus. As a result, the processing for selection by the M2M terminal 202B can be reduced.

  Moreover, in the M2M terminal 202B according to the first embodiment of the present invention, the information acquisition unit 36 acquires base station information related to the radio base station apparatus. Further, based on the base station information acquired by the information acquisition unit 36, the determination unit 37 determines that the wireless base station device corresponding to the base station information is connected to the wireless terminal device belonging to a predetermined subscriber group. It is determined whether or not a permission operation for permitting communication with the apparatus is performed. In addition, when the radio base station apparatus performs the permission operation, the communication control unit 38 performs processing for establishing a communication connection to the radio base station apparatus.

  With such a configuration, a wireless terminal device that does not belong to any subscriber group is permitted, that is, a communication connection is prevented from being established for a wireless base station device that operates in the open access mode. Since it is possible to prevent the radio base station apparatus from becoming congested, for example, between the mobile terminal 202A that does not belong to any subscriber group such as a mobile phone and the radio base station apparatus that operates in the open access mode It is possible to prevent the communication from being disconnected and to stabilize the communication.

  Further, in the M2M terminal 202B according to the first embodiment of the present invention, the determination unit 37, when the radio base station device does not perform the above-described permission operation, the radio corresponding to the newly acquired base station information. It is determined whether or not the base station apparatus performs the permission operation.

  As described above, the above determination is repeated until a radio base station apparatus that performs the permission operation is searched, so that the M2M terminal 202B that belongs to a predetermined subscriber group and the radio base station apparatus that operates in the open access mode are connected. It is possible to prevent the establishment of a communication connection with more certainty.

  In the M2M terminal 202B according to the first embodiment of the present invention, when the communication control unit 38 performs processing for establishing a communication connection to the radio base station device, camping processing is performed on the radio base station device. .

  As described above, when the process of establishing the communication connection to the radio base station apparatus is performed, the camp process is performed on the radio base station apparatus, so that the communication between the M2M terminal 202B and the radio base station apparatus is performed. Communication can be enabled.

  Further, in the M2M terminal 202B according to the first embodiment of this invention, the communication control unit 38 performs an attach process when performing a process of establishing a communication connection to the radio base station apparatus.

  As described above, when the process of establishing the communication connection with the radio base station apparatus is performed, the terminal registration of the M2M terminal 202B can be performed on the upper network by performing the attach process on the upper network. .

  Moreover, in the M2M terminal 202B according to the first embodiment of the present invention, the information acquisition unit 36 acquires base station information related to the radio base station apparatus. In addition, based on the base station information acquired by the information acquisition unit 36, the determination unit 37 is a wireless base station apparatus corresponding to the base station information that is permitted for a subscriber group to which its own M2M terminal 202B belongs. It is determined whether it is a base station apparatus. In addition, when the radio base station apparatus targets a subscriber group to which its own M2M terminal 202B belongs, the communication control unit 38 performs processing for establishing a communication connection to the radio base station apparatus.

  In this way, other wireless base station devices such as a public mobile communication network are configured by establishing a communication connection between the M2M terminal 202B and the wireless base station device to which the subscriber group to which the M2M terminal 202B belongs is permitted. Without greatly affecting the network, it is possible to flexibly construct a network by a predetermined radio base station apparatus that allows the M2M terminal 202B and the subscriber group to which the M2M terminal 202B belongs.

  In addition, as described above, since a communication connection between the M2M terminal 202B and a predetermined radio base station apparatus is established in a restricted network, a large number of M2M terminals 202B exist in a specific area. However, it is possible to prevent the radio base station apparatus other than the predetermined radio base station apparatus from becoming congested, and to reduce the load on the radio base station apparatus other than the predetermined radio base station apparatus. For this reason, even when a mobile terminal such as a mobile phone has moved into the specific area, communication at the mobile terminal can be prevented from being disconnected, and communication can be stabilized.

  Further, in the M2M terminal 202B according to the first embodiment of the present invention, the determination unit 37 newly acquires when the radio base station apparatus does not allow the subscriber group to which the own M2M terminal 202B belongs. It is determined whether the radio base station apparatus corresponding to the received base station information is a radio base station apparatus that is permitted for the subscriber group to which its own M2M terminal 202B belongs.

  In this way, the above determination is repeated until a wireless base station device that is a target of permission for the subscriber group to which the M2M terminal 202B belongs is searched, so that the M2M terminal 202B and the subscriber group to which the M2M terminal 202B belongs are permitted. It is possible to more reliably prevent a communication connection from being established with a radio base station apparatus other than the target radio base station apparatus.

  Further, in the M2M terminal 202B according to the first embodiment of the present invention, the determination unit 37 determines whether the radio base station apparatus corresponding to this base station information is based on the base station information acquired by the information acquisition unit 36. It is determined whether or not a permission operation for permitting communication to a wireless terminal device belonging to a predetermined subscriber group is performed, and when the wireless base station device performs the permission operation, the wireless base station device It is determined whether or not it is a radio base station apparatus for which the subscriber group to which the M2M terminal 202B belongs is to be permitted.

  With such a configuration, the number of determination targets in determining whether or not the radio base station apparatus corresponding to the acquired base station information is a radio base station apparatus to which the subscriber group to which the own M2M terminal 202B belongs is permitted is reduced. Therefore, the processing for the determination can be reduced.

  In the M2M terminal 202B according to the first embodiment of the present invention, when the communication control unit 38 performs processing for establishing a communication connection to the radio base station device, camping processing is performed on the radio base station device. Do.

  As described above, when the process of establishing the communication connection to the radio base station apparatus is performed, the camp process is performed on the radio base station apparatus, so that the communication between the M2M terminal 202B and the radio base station apparatus is performed. Communication can be enabled.

  Also, in the M2M terminal 202B according to the first embodiment of the present invention, the communication control unit 38 performs an attach process when performing a process of establishing a communication connection to the radio base station apparatus.

  As described above, when the process of establishing the communication connection with the radio base station apparatus is performed, the terminal registration of the M2M terminal 202B can be performed on the upper network by performing the attach process on the upper network. it can.

  Moreover, the radio | wireless terminal apparatus which concerns on the 1st Embodiment of this invention is the M2M terminal 202B which is installed fixedly or is restrict | limited to the movement within a predetermined area.

  Here, in a situation where the M2M terminal 202B is fixedly installed or restricted to movement within a predetermined area, the radio base station apparatus is always present due to the presence of a large number of M2M terminals 202B in a specific area. Is likely to be congested. However, according to the M2M terminal 202B according to the present invention, since the communication connection between the M2M terminal 202B and a specific radio base station apparatus can be established in the restricted network, the M2M terminal 202B is fixed. It is particularly effective in a situation where it is installed in a limited area or restricted to movement within a predetermined area.

[Modification]
In the above-described first embodiment of the present invention, a case has been described in which a plurality of radio base station apparatuses are directly connected to the core network. On the other hand, in the modification of the first embodiment of the present invention, a plurality of radio base station devices are connected to a gateway device such as HeNB-GW, and the plurality of radio base station devices and the core network are connected to the gateway. A case where connection is made via a device will be described.

  FIG. 11 is a diagram showing a configuration of a communication system according to a modification of the first embodiment of the present invention.

  Referring to FIG. 11, a communication system 402 according to a modification of the first embodiment of the present invention is similar to the communication system 401 shown in FIG. 3, for example, LTE (Long Term Evolution) standardized by 3GPP. , And includes a core network (upper network) 302, a gateway device (HeNB-GW) 151, and lower networks 121A, 121B, and 121C.

  The lower networks 121A, 121B, and 121C are networks provided in different areas, and include one or a plurality of radio base station apparatuses.

  For example, the lower network 121A is a network provided in the company A and includes a plurality of radio base station apparatuses 102FA. The lower network 121B is a network provided in the B company, and includes a plurality of radio base station apparatuses 102FB. The lower network 121C is a network provided in the C company, and includes a plurality of radio base station apparatuses 102FC. FIG. 11 shows a situation in which three lower networks 121A, 121B, and 121C are connected to the gateway device 151. However, there are one, two, or four lower networks connected to the gateway device 151. There may be more than one.

  Radio base station apparatuses 102FA, 102FB, and 102FC are femto base stations, for example. The radio base station apparatus 102FA forms a cell FCA, the radio base station apparatus 102FB forms a cell FCB, and the radio base station apparatus 102FC forms a cell FCC.

  The radio base station apparatuses 102FA, 102FB, and 102FC are all assigned CSG-IDs, and allow communication to radio terminal apparatuses belonging to a predetermined subscriber group, that is, radio terminal apparatuses that are registered members. Operates in closed access mode.

  For example, the CSG-ID of the radio base station apparatus 102FA is 5555, the CSG-ID of the radio base station apparatus 102FB is 6666, and the CSG-ID of the radio base station apparatus 102FC is 7777. Note that radio base station apparatuses provided in the same lower network do not necessarily have to be assigned the same CSG-ID. Different CSG-IDs may be assigned between the radio base station apparatuses.

  The radio base station apparatuses 102FA, 102FB, and 102FC perform the same operations as the radio base station apparatuses 101FA, 101FB, 101FC, and 101FD shown in FIG.

  Further, in the A company, the B company, and the C company, there are devices equipped with wireless devices in the M2M network system, that is, M2M terminals. Here, a situation will be described in which the M2M terminal 203Ba exists in the A company, the M2M terminal 203Bb exists in the B company, and the M2M terminal 203Bc exists in the C company.

  The M2M terminals 203Ba, 203Bb, and 203Bc maintain a list (White list). Among the “Allowed CSG list” and “Operator CSG list” that constitute this list, the “Operator CSG list” includes its own M2M terminal 203Ba, CSG-ID assigned to 203Bb and 203Bc is written.

  Specifically, the CSG-ID of the M2M terminal 203Ba is 5555, the CSG-ID of the M2M terminal 203Bb is 6666, and the CSG-ID of the M2M terminal 203Bc is 7777.

  When activated, the M2M terminals 203Ba, 203Bb, and 203Bc refer to the list and specify a radio base station apparatus that is assigned the same CSG-ID as the CSG-ID assigned to the M2M terminal 203Ba, 203Bb, and 203Bc. And selectively establishing a communication connection with the specific radio base station apparatus.

  That is, the M2M terminal 203Ba having a CSG-ID of 5555 establishes a communication connection with the radio base station apparatus 102FA having the same CSG-ID 5555, and the M2M terminal 203Bb having a CSG-ID of 6666 is also a CSG. -A communication connection is established to the radio base station apparatus 102FB whose ID is 6666, and the M2M terminal 203Bc whose CSG-ID is 7777 is also connected to the radio base station apparatus 102FC whose CSG-ID is 7777. Establish.

  As a result, the M2M terminal 203Ba existing in the company A establishes a communication connection with the radio base station apparatus 102FA, and transmits data to and from the core network 302 via the radio base station apparatus 102FA and the gateway apparatus 151. Send and receive. Further, the M2M terminal 203Bb existing in the company B establishes a communication connection with the radio base station apparatus 102FB, and transmits / receives data to / from the core network 302 via the radio base station apparatus 102FB and the gateway apparatus 151. I do. Further, the M2M terminal 203Bc existing in the company C establishes a communication connection with the radio base station apparatus 102FC, and transmits / receives data to / from the core network 302 via the radio base station apparatus 102FC and the gateway apparatus 151. I do.

  The other configurations and operations of the M2M terminals 203Ba, 203Bb, and 203Bc are the same as those of the M2M terminals 202Ba, 202Bb, and 202Bc shown in FIG. 3, and thus detailed description thereof is omitted here.

  As described above, in the communication system 402 according to the modification of the first embodiment of the present invention, the gateway device 151 relays data transmitted and received between a plurality of radio base station devices and the core network 302. . Further, one or a plurality of radio base station apparatuses can perform an operation of permitting M2M terminals 203Ba, 203Bb, and 203Bc belonging to a predetermined subscriber group to communicate with themselves.

  In this way, by connecting the radio base station apparatus and the core network 302 via the gateway apparatus 151, it is possible to reduce the number of management targets of the core network 302 and to distribute access concentrated on the core network 302.

  In the communication system 402 according to the modification of the first embodiment of the present invention, the gateway device 151 includes a core network 302 and lower networks 121A, 121B, and 121C each including one or more radio base station devices. Data transmitted and received between the wireless base station apparatuses are different for each lower network 121A, 121B, 121C.

  With such a configuration, even when a plurality of areas to which the M2M network system is applied exist in different places, these areas can be collectively managed by the gateway device 151.

<Second Embodiment>
Next, a second embodiment of the present invention will be described. In the first embodiment described above, the M2M terminal 202B performs communication based on whether or not the CSG-ID assigned to itself is the same as the CSG-ID assigned to the radio base station apparatus. The case of determining whether or not to establish a connection has been described. On the other hand, in the second embodiment of the present invention, the M2M terminal 204B acquires the identification information of the radio base station apparatus and determines whether to establish a communication connection based on this identification information. The case will be described.

[Configuration and basic operation]
FIG. 12 is a diagram illustrating a configuration of a communication system including a wireless terminal device according to the second embodiment of the present invention.

  Referring to FIG. 12, communication system 403 is a mobile communication system according to LTE standardized by 3GPP, for example, similarly to communication system 401 according to the first embodiment of the present invention shown in FIG. Radio base station apparatuses 103MA and 103MB and a core network (upper network) 303 are provided.

  Radio base station apparatuses 103MA and 103MB are, for example, macro base stations. The radio base station apparatus 103MA forms a cell MCA and can communicate with radio terminal apparatuses existing in the cell MCA, that is, mobile terminals 204A or M2M terminals 204Ba, 204Bb, and 204Bc. Note that the M2M terminals 204Ba, 204Bb, and 204Bc are collectively referred to as “M2M terminal 204B” hereinafter. Also, the radio base station apparatus 103MB forms a cell MCB and can communicate with the mobile terminal 204A or the M2M terminal 204B existing in the cell MCB.

  The communication system 403 further includes radio base station apparatuses 103FA, 103FB, 103FC, and 103FD provided in the cell MCA. Radio base station apparatuses 103FA, 103FB, 103FC, and 103FD are femto base stations, for example. The radio base station apparatus 103FA forms a cell FCA, the radio base station apparatus 103FB forms a cell FCB, the radio base station apparatus 103FC forms a cell FCC, and the radio base station apparatus 103FD forms a cell FCD.

  In addition, each of the radio base station apparatuses 103FA, 103FB, 103FC, and 103FD has its own identification information (hereinafter referred to as “cell identity”). This cell ID is a relatively long bit string of 28 bits, for example.

  Similar to the M2M terminal 202B according to the first embodiment of the present invention described above, the M2M terminal 204B is a device equipped with a radio in the M2M network system, and communicates with a specific radio base station apparatus. It can be carried out. For example, the M2M terminal 204Ba and the radio base station apparatus 103FA constitute a common M2M network, and the M2M terminal 204Ba can establish a communication connection with the radio base station apparatus 103FA.

  The core network 303 includes an MME (communication control device) 162 and an HSS (subscriber information management device) 164. An MME (Mobility Management Entity) 162 manages the radio base station apparatuses 103MA, 103MB, 103FA, 103FB, 103FC, and 103FD in the communication system 403. An HSS (Home Subscriber Server) 164 manages subscriber information of the mobile terminal 204A and the M2M terminal 204B in the communication system 403.

[M2M terminal configuration]
FIG. 13 is a diagram illustrating a configuration of a wireless terminal apparatus according to the second embodiment of the present invention.

  Referring to FIG. 13, M2M terminal 204B according to the second embodiment of the present invention includes a radio device 21 and a signal processing unit 22. The radio device 21 includes an antenna 31, a circulator 32, a receiving unit 33, and a transmitting unit 34. The signal processing unit 22 includes an information acquisition unit 36, a determination unit 37, a communication control unit 38, and a list storage unit 40.

  Since the antenna 31, the circulator 32, the reception unit 33, and the transmission unit 34 of the wireless device 21 are the same as the respective components in the wireless device 21 of the M2M terminal 202B according to the first embodiment of the present invention shown in FIG. The detailed description here will not be repeated.

  The information acquisition unit 36 of the signal processing unit 22 acquires a digital signal of own cell information broadcast from the radio base station apparatuses 103MA, 103MB, 103FA, 103FB, 103FC, and 103FD, and applies OFDM ( Various signal processing such as FFT (Fast Fourier Transform) in an Orthogonal Frequency Division Multiplex (FFT) system is performed and output to the determination unit 37.

  The information acquisition unit 36, for example, information (Master Information Block) used for specifying a radio base station apparatus such as a radio signal bandwidth and a cell physical ID, and information such as a cell ID of each radio base station apparatus ( The own cell information including System Information Block Type 1) is acquired as base station information.

  The list storage unit 40 stores an identification information list. This identification information list includes, for example, cell IDs of one or a plurality of radio base station apparatuses capable of establishing communication connection with its own M2M terminal 204B. The identification information list is stored as nonvolatile data. Therefore, the M2M terminal 204B retains this identification information list even when the power is turned off, and the identification information retained before the power is turned off when the power is turned on next time. The list can be used as it is. In the identification information list, a communication connection with the own M2M terminal 204B cannot be established instead of the cell ID of the radio base station apparatus capable of establishing a communication connection with the own M2M terminal 204B. One or a plurality of radio base station apparatus cell IDs may be included.

  The information acquisition unit 36 refers to the identification information list stored in the list storage unit 40 and searches for the transmission frequency of the radio base station apparatus corresponding to the cell ID included in the identification information list via the radio device 21. Thus, own cell information including “Master Information Block” is acquired from the radio base station apparatus corresponding to the cell ID included in the identification information list.

  Then, the information acquisition unit 36 specifies the radio base station device corresponding to the cell ID included in the identification information list based on the acquired “Master Information Block”, and “System Information Block Type” from the specified radio base station device. The own cell information including “1” is received. When the determination unit 37 receives the own cell information including “System Information Block Type 1” from the information acquisition unit 36, the determination unit 37 refers to the identification information list stored in the list storage unit 40 and reads “System Information Block Type 1”. It is determined whether or not the cell ID included in “” is included in the identification information list.

  Then, when the determination unit 37 determines that the cell ID included in the own cell information received from the information acquisition unit 36 is included in the identification information list, the radio base station apparatus corresponding to the cell ID is specified. And determines to perform processing for establishing a communication connection for this specific radio base station device. Then, the determination unit 37 outputs the determination content to the communication control unit 38.

  On the other hand, if the determination unit 37 determines that the cell ID included in the own cell information received from the information acquisition unit 36 is not included in the identification information list, the wireless base station device corresponding to the cell ID is identified. It is determined that the wireless base station apparatus is not the wireless base station apparatus, and base station information related to another wireless base station apparatus is newly acquired. Then, the determination unit 37 outputs the determination content to the information acquisition unit 36.

  In addition, the information acquisition unit 36 supports not only the transmission frequency of the radio base station apparatus corresponding to the cell ID included in the identification information list but also a predetermined frequency in order to cope with the addition of the radio base station apparatus constituting the M2M network. The frequency search of the radio signal is performed within the range, and the neighboring cell of its own M2M terminal 204B is detected. And the information acquisition part 36 acquires "Master Information Block" and "System Information Block Type 1" which are contained in the own cell information alert | reported from the wireless base station apparatus which forms the detected periphery cell. The information acquisition unit 36 can perform such a frequency search at a predetermined timing, for example, every 2 hours or every 24 hours.

  In this case, based on “System Information Block Type 1” acquired by the information acquisition unit 36, the determination unit 37 determines that the type of the radio base station apparatus that is the transmission source of “System Information Block Type 1” is predetermined. It is determined whether the type. The predetermined type is, for example, a femto base station. Here, the case where the radio base station apparatus is the predetermined type means a case where the radio base station apparatus is a femto base station.

  Here, “System Information Block Type 1” includes “sib-Mapping Info” that is scheduling information. When the radio base station apparatus that is the transmission source of the own cell information is a femto base station, that is, any one of the radio base station apparatuses 103FA, 103FB, 103FC, and 103FD, the “sib-Mapping Info” includes “System It is shown that “Information Block Type 9” is assigned.

  Therefore, the determination unit 37 determines whether “System Information Block Type 9” is assigned to “sib-Mapping Info” included in “System Information Block Type 1”, thereby transmitting its own cell information. It can be determined whether or not the original radio base station apparatus is a femto base station, that is, whether or not there is a possibility of becoming a communication connection destination of its own M2M terminal 204B. If the determination unit 37 determines that “System Information Block Type 9” is assigned, the determination unit 37 outputs the determination result to the information acquisition unit 36.

  And the information acquisition part 36 acquires "System Information Block Type 9" from the radio base station apparatus which is a femto base station, and uses the identification information attached | subjected for every femto cell from "System Information Block Type 9". Read a certain “hnb-Name”.

  In order to determine whether or not the transmission source of the own cell information is a femto base station, it is possible to determine whether or not “System Information Block Type 9” is assigned to “sib-Mapping Info”. Therefore, the information acquisition unit 36 does not necessarily need to read “hnb-Name”.

  In addition, when the determination unit 37 determines that the radio base station apparatus that is the transmission source of the own cell information is a femto base station, the determination unit 37 performs processing for establishing a communication connection with the radio base station apparatus that is the femto base station. Decide to do. Then, the determination unit 37 outputs the determination content to the communication control unit 38.

  When the communication control unit 38 receives the determination content indicating that the process for establishing the communication connection with the radio base station apparatus determined to be the specific radio base station apparatus is received, the communication control unit 38 performs various processes via the radio unit 21. Information is transmitted to and received from the specific radio base station apparatus. In addition, when the communication control unit 38 receives the determination content indicating that the process for establishing the communication connection to the radio base station apparatus determined to be a femto base station is received, the Various information is transmitted / received to / from the femto base station via 21.

  In addition, the radio base station apparatus determined to be a femto base station is not necessarily a radio base station apparatus that is permitted to communicate with the M2M terminal 204B. For this reason, when processing for establishing a communication connection is performed between the M2M terminal 204B and the radio base station device, the higher-level device in the core network 303, that is, the MME 162 or the HSS 164, the M2M terminal 204B and the radio base station device. Whether or not it is possible to establish a communication connection with is determined.

  Accordingly, when the MME 162 or the HSS 164 determines that the communication connection between the M2M terminal 204B and the radio base station apparatus can be established, the communication connection is established between the M2M terminal 204B and the radio base station apparatus. The Further, when the communication connection is established, the determination unit 37 determines whether or not the cell ID of the wireless base station device is included in the identification information list, and when it is not included in the identification information list, The determination unit 37 adds the cell ID to the identification information list.

  As described above, the cell ID of the radio base station apparatus can be added to the identification information list by the M2M terminal 204B itself. However, when a radio base station apparatus is added to the M2M network, for example, a network operator It is also possible to manually add the cell ID of this radio base station apparatus to the identification information list.

  Further, the communication system 403 is not limited to the form as shown in FIG. 12, and, for example, like the communication system 402 according to the modification of the first embodiment of the present invention shown in FIG. , 103 MB, 103 FA, 103 FB, 103 FC, 103 FD and a gateway device that relays data transmitted and received between the core network 303.

[Operation]
Next, regarding the operation when the M2M terminal 204B according to the second embodiment of the present invention selects the radio base station apparatus as its own communication connection destination, “communication connection destination selection operation based on the identification information list” , “Operation for adding a new cell ID to the identification information list” and “Operation for determining whether communication connection between M2M terminal and radio base station apparatus is possible” will be described separately.

  Note that the M2M terminal 204B and the radio base station apparatus according to the second embodiment of the present invention read and execute a program including each step of the following sequences from a memory (not shown). This program can be installed externally. The installed program is distributed in a state stored in a recording medium, for example.

(1) Operation for Selecting Communication Connection Destination Based on Identification Information List FIG. 14 is a diagram showing a wireless communication system including a wireless terminal device according to the second embodiment of the present invention. It is an example of the sequence which shows the flow of operation | movement at the time of selecting a base station apparatus.

  Referring to FIG. 14, first, the information acquisition unit 36 of the M2M terminal 204B refers to the identification information list stored in the list storage unit 40, and the radio base station apparatus corresponding to the cell ID included in the identification information list. Search the transmission frequency. For example, when the cell ID of the radio base station apparatus 103FA is written in the identification information list, the information acquisition unit 36 searches for the transmission frequency of the radio base station apparatus 103FA (step S51). When cell IDs of a plurality of radio base station devices are described in the identification information list, the information acquisition unit 36 searches for the transmission frequency for each of the plurality of radio base station devices.

  Next, the information acquisition unit 36 receives the radio signal of the searched transmission frequency from the own cell information broadcast from the radio base station apparatuses 103MA, 103MB, 103FA, 103FB, 103FC, and 103FD, thereby identifying the identification information list. The self-cell information notified from the radio base station apparatus 103FA corresponding to the cell ID included in is received (step S52). This own cell information includes “Master Information Block”.

  Next, the information acquisition unit 36 identifies the radio base station device 103FA based on the “Master Information Block” of the received own cell information, and the cell indicating the radio base station device 103FA from the identified radio base station device 103FA. Self-cell information including information (System Information Block Type 1) such as ID (cell Identity) is received (step S53).

  Next, the determination unit 37 refers to the identification information list stored in the list storage unit 40, and the cell ID included in the “System Information Block Type 1” of the own cell information received by the information acquisition unit 36 is identified. It is determined whether it is included in the information list (step S54).

  If the determination unit 37 determines that the cell ID included in “System Information Block Type 1” is included in the identification information list (“Yes” in step S54), the determination unit 37 sets the “System Information Block Type 1”. The wireless base station apparatus 103FA that is the transmission source is determined to perform processing for establishing a communication connection, and the determined content is output to the communication control unit 38. And the communication control part 38 receives the said content of determination, and performs the process and attachment process for communication connection establishment of self M2M terminal 204B and wireless base station apparatus 103FA (step S55).

  On the other hand, if the determination unit 37 determines that the cell ID included in “System Information Block Type 1” is not included in the identification information list (“No” in step S54), the determination unit 37 sets the transmission frequency searched in step S51. Among the corresponding own cell information, own cell information that has not been received is newly received (step S52), and the above-described operation is repeated.

(2) Operation of adding a new cell ID to the identification information list FIG. 15 is a communication system including a wireless terminal device according to the second embodiment of the present invention, in which the wireless terminal device adds a new cell to the identification information list. It is an example of the sequence which shows the flow of operation | movement at the time of adding ID.

  Referring to FIG. 15, first, information acquisition unit 36 of M2M terminal 204B uses not only the transmission frequency of the radio base station apparatus corresponding to the cell ID included in the identification information list, but also, for example, the “Autonomous Search” function. Then, the frequency search of the radio signal is performed within a predetermined frequency range, and the neighboring cell is detected (step S61).

  Next, the information acquisition part 36 receives the own cell information alert | reported from the radio base station apparatus which forms the detected surrounding cell (step S62). This own cell information includes “Master Information Block”.

  Next, the information acquisition unit 36 identifies the radio base station apparatus that forms the detected neighboring cell based on the “Master Information Block” of the received own cell information, and from the identified radio base station apparatus, the radio base station apparatus The own cell information including information (System Information Block Type 1) such as a cell ID indicating the station apparatus is received (step S63).

  Next, the determination unit 37 determines whether or not “System Information Block Type 9” (SIB9) is assigned to “sib-Mapping Info” included in the own cell information received by the information acquisition unit 36 ( Step S64).

  If the determination unit 37 determines that “System Information Block Type 9” is assigned to “sib-Mapping Info” included in “System Information Block Type 1” of the own cell information (“Yes” in step S64). In other words, when it is determined that the radio base station apparatus that is the transmission source of “System Information Block Type 1” is a femto base station, the determination result is output to the information acquisition unit 36. And the information acquisition part 36 receives the own cell information containing "System Information Block Type 9" from the said femto base station (step S65).

  Next, the determination unit 37 determines whether or not “hnb-Name” can be read out from “System Information Block Type 9” of the own cell information received by the information acquisition unit 36 (step S66). .

  If the determination unit 37 can read “hnb-Name” (“Yes” in step S66), the determination unit 37 establishes a communication connection with the radio base station apparatus that is the transmission source of “System Information Block Type 1”. To determine whether to perform the processing for, and outputs the determined content to the communication control unit 38. And the communication control part 38 receives the said content of determination, and performs the establishment process of RRC connection between the own M2M terminal 204B and the said radio base station apparatus (step S67).

  On the other hand, when the determination unit 37 determines that “System Information Block Type 9” is not assigned to “sib-Mapping Info” included in “System Information Block Type 1” of the own cell information (“No” in Step S64) )), Or when it is determined that “hnb-Name” included in “System Information Block Type 9” of the own cell information cannot be read (“No” in step S66), the determination result is sent to the information acquisition unit 36. Output. And the information acquisition part 36 newly performs the frequency search of a radio signal (step S61), and repeats the above-mentioned operation | movement.

  Next, after establishing an RRC connection in step S67, the communication control unit 38 executes an attach process that is a terminal registration process for the core network 303 (step S68).

  Next, the determination unit 37 determines whether or not the attach process executed in step S68 has been successful, that is, the attach process has been completed while the establishment of the communication connection between the own M2M terminal 204B and the radio base station apparatus is maintained. Whether or not (step S69).

  If determining unit 37 determines that the communication connection between its own M2M terminal 204B and the wireless base station device has not been established ("No" in step S69), it outputs the determination result to information acquiring unit 36. And the information acquisition part 36 newly performs the frequency search of a radio signal (step S61), and repeats the above-mentioned operation | movement.

  On the other hand, if the determination unit 37 determines that a communication connection has been established between its own M2M terminal 204B and the radio base station device ("Yes" in step S69), the own cell received by the information acquisition unit 36 in step S63 It is determined whether or not the cell ID included in the “System Information Block Type 1” of the information is included in the identification information list stored in the list storage unit 40 (step S70).

  If the determination unit 37 determines that the cell ID is not included in the identification information list (“No” in step S70), the determination unit 37 adds the cell ID to the identification information list (step S71).

  On the other hand, when the determination unit 37 determines that the cell ID is included in the identification information list (“Yes” in step S70), the determination unit 37 outputs the determination result to the information acquisition unit 36. And the information acquisition part 36 newly performs the frequency search of a radio signal (step S61), and repeats the above-mentioned operation | movement.

  As described above, by determining whether “System Information Block Type 9” is assigned to “sib-Mapping Info” included in “System Information Block Type 1” of the own cell information, It can be determined whether or not the radio base station apparatus that transmitted the information is a femto base station. That is, the determination unit 37 does not determine whether or not “hnb-Name” can be read out from “System Information Block Type 9”, and the radio base station apparatus that has transmitted the own cell information has received the femto It can be determined whether or not it is a base station. For this reason, step S65 and step S66 mentioned above do not necessarily need to be performed.

(3) Operation for determining whether communication connection between M2M terminal and radio base station apparatus is possible Here, in step S68 shown in FIG. 15, when M2M terminal 204B determines that the radio base station apparatus is a femto base station, A camping process for the femto base station and an attach process for the core network 303 are executed. However, as described above, this femto base station is not necessarily a radio base station apparatus capable of establishing a communication connection with the M2M terminal 204B, and the MME 162 or the HSS 164 in the core network 303 does not have the M2M terminal 204B. And whether or not communication connection is possible between the wireless base station apparatus and the wireless base station apparatus. Hereinafter, the description will be divided into “(a) determination of availability of communication connection by MME” and “(b) determination of availability of communication connection by HSS”.

(A) Determination of availability of communication connection by MME FIG. 16 is a communication system including a radio base station apparatus according to the second embodiment of the present invention, in which the MME communicates between the radio terminal apparatus and the radio base station apparatus. It is an example of the sequence which shows the flow of operation | movement at the time of determining availability.

  Referring to FIG. 16, first, the M2M terminal 204B performs RRC connection establishment processing with the radio base station apparatus, and then transmits an RRC connection connection completion notification (RRC Connection Setup Complete) to the radio base station apparatus. To do. This RRC connection connection completion notification includes an attach request (Attach Request) for performing an attach process to the core network 303 (step S81).

  Next, the radio base station apparatus transmits the attach request received from the M2M terminal 204B to the MME 162. This attach request includes the terminal ID, which is identification information of the M2M terminal 204B, and the cell ID of the radio base station apparatus (step S82).

  Next, the MME 162 acquires the terminal ID of the M2M terminal 204 included in the attach request received from the radio base station apparatus (step S83). Further, the MME 162 acquires a cell ID included in the attach request received from the radio base station apparatus (step S84).

  Next, based on the terminal ID acquired in step S83 and the cell ID acquired in step S84, the MME 162 determines whether communication connection between the M2M terminal 204B and the radio base station apparatus is possible (step S85).

  For example, a correspondence table in which one or a plurality of wireless terminal devices 204A and 204B and wireless base station devices capable of communication connection with the wireless terminal devices 204A and 204B are associated with each other is stored in the HSS 164. Then, the MME 162 acquires this correspondence table from the HSS 164, and determines whether or not the M2M terminal 204B can be connected to the radio base station apparatus based on this correspondence table.

  When the MME 162 determines that the communication connection between the M2M terminal 204B and the radio base station apparatus cannot be made, such as when the M2M terminal 204B and the radio base station apparatus are not associated in the correspondence table ( In step S85, “No”), an attachment rejection notification (Attach Reject) is transmitted to the radio base station apparatus (step S86).

  Next, the radio base station apparatus transmits an attach rejection notification received from the MME 162 to the M2M terminal 204B (step S87).

  Next, the MME 162 transmits a terminal information release instruction (UE Context Release Command) to the radio base station apparatus (step S88).

  Then, the radio base station apparatus receives a terminal information release instruction from the MME 162, transmits an RRC connection release notification (RRC Connection Release) to the M2M terminal 204B (step S89), and further notifies the MME 162 of terminal information release completion notification ( UE Context Release Complete) is transmitted (step S90).

  As a result, the establishment of communication connection between the M2M terminal 204B and the radio base station apparatus is released, and the attach process ends (step S91).

  On the other hand, when the MME 162 determines that the communication connection between the M2M terminal 204B and the radio base station apparatus is possible (“Yes” in step S85), the M2M terminal 204B authentication procedure (Authentication Procedure) (step S92) ), And a security procedure (Security Mode Setting Procedure) such as transmission / reception of security information is executed (step S93).

  Next, the MME 162 transmits an information transmission request (Initial Context Setup Request) such as security information and an attach accept (Attach Accept) which is a response to the attach request to the radio base station apparatus (step S94).

  Next, the M2M terminal 204B receives security information from the radio base station apparatus and transmits a security completion notification to the radio base station apparatus. Is executed (step S95).

  Next, the radio base station apparatus executes an RRC connection reconfiguration procedure with the M2M terminal 204B. That is, the radio base station apparatus transmits an RRC connection reconfiguration instruction (RRC Connection Reconfiguration) to the M2M terminal 204B, and the M2M terminal 204B transmits an RRC connection reconfiguration completion notification (RRC Connection Reconfiguration Complete) to the radio base station apparatus. (Step S96).

  Next, when receiving the security completion notification and the RRC connection reconfiguration completion notification from the M2M terminal 204B, the radio base station apparatus transmits an information transmission response to the information transmission request to the MME 162 (step S97).

  Next, when a transmission message is transmitted from the M2M terminal 204B (step S98), the radio base station apparatus transmits an attach completion notification (Attach Complete) to the MME 162 (step S99). As a result, the attach process is completed while the establishment of communication connection between the M2M terminal 204B and the radio base station apparatus is maintained.

  Note that the operations from step S83 to step S91 described above are performed until the MME 162 transmits an attachment acceptance to the radio base station apparatus, that is, until step S94, for example, the authentication procedure (step S92) or security of the M2M terminal 204B. You may perform after a procedure (step S93).

(B) Judgment of communication connection by HSS FIG. 17 shows communication connection between a radio terminal apparatus and a radio base station apparatus in a communication system including the radio base station apparatus according to the second embodiment of the present invention. It is an example of the sequence which shows the flow of operation | movement at the time of determining availability.

  Referring to FIG. 17, the operation from step S101 to step S104 is similar to the operation from step S81 to step S84 shown in FIG. 16, and therefore detailed description thereof will not be repeated here.

  Next, the MME 162 transmits the terminal ID of the M2M terminal 204B acquired in step S103 and the cell ID of the radio base station apparatus acquired in step S104 to the HSS 164 (step S105).

  Next, the HSS 164 determines whether communication connection between the M2M terminal 204B and the radio base station apparatus is possible based on the terminal ID and the cell ID. For example, as described above, the HSS 164 includes one or a plurality of wireless terminal devices 204A and 204B, which are the management targets of the HSS 164, and wireless base station devices capable of communication connection between the wireless terminal devices 204A and 204B. The associated correspondence table is stored, and with reference to this correspondence table, it is determined whether communication connection between the M2M terminal 204B and the radio base station apparatus is possible (step S106).

  If the HSS 164 determines that communication connection between the M2M terminal 204B and the radio base station apparatus cannot be established ("No" in step S106), the HSS 164 notifies the MME 162 that communication connection is not possible (step S107).

  The operation from step S108 to step S113 after the MME 162 receives the notification indicating that the communication connection is impossible from the HSS 164 is the same as the operation from step S86 to step S91 shown in FIG. The explanation is not repeated.

  On the other hand, if the HSS 164 determines that communication connection between the M2M terminal 204B and the radio base station apparatus is possible (“Yes” in step S106), the HSS 164 notifies the MME 162 that communication connection is possible ( Step S114).

  Since the operation from step S115 to step S122 after receiving notification from the HSS 164 that the MME 162 is capable of communication connection is the same as the operation from step S92 to step S99 shown in FIG. The detailed description will not be repeated.

  Similar to the operation flow shown in FIG. 16, the operations from step S103 to step S114 described above are performed until the MME 162 transmits an attach acceptance to the radio base station apparatus, that is, until step S117, for example, M2M You may perform after the authentication procedure (step S115) or security procedure (step S116) of the terminal 204B.

  As described above, in the M2M terminal 204B according to the second embodiment of the present invention, the determination unit 37 acquires the cell ID of the radio base station apparatus from the radio base station apparatus. In addition, the M2M terminal 204B includes a list storage unit 40 that stores an identification information list including cell IDs of one or more radio base station devices. Then, the determination unit 37 determines whether or not the radio base station device is a specific radio base station device based on whether or not the acquired cell ID is included in the identification information list.

  In this way, whether the M2M terminal 204B is a radio base station apparatus suitable as a communication connection destination of the radio terminal apparatus without performing complicated determination processing by providing a list of cell IDs of the radio base station apparatus It is possible to easily determine whether or not.

  Further, in the M2M terminal 204B according to the second embodiment of the present invention, the determination unit 37, when communication connection between its own wireless terminal device and the wireless base station device is established, It is confirmed whether or not the cell ID of the base station apparatus is included in the identification information list. If this cell ID is not included in the identification information list, this cell ID is added to the identification information list.

  With such a configuration, even when a wireless base station device is newly added to the network, the cell ID of the wireless base station device can be added to the identification information list. After the addition, the new radio base station device can be determined as a specific radio base station device in the same manner as other radio base station devices already included in the identification information list.

  Moreover, in the M2M terminal 204B according to the second embodiment of the present invention, the determination unit 37 determines whether or not the type of the radio base station apparatus is a predetermined type. In addition, the communication control unit 38 starts processing for establishing a communication connection with the radio base station apparatus determined to be the predetermined type by the determination unit 37.

  With such a configuration, the M2M terminal 204B starts processing for preferentially establishing a communication connection with a radio base station apparatus having a high probability of being able to establish a communication connection with itself, such as a femto base station. can do.

  In the communication system 403 according to the second embodiment of the present invention, the M2M terminal 204B establishes a communication connection to the radio base station apparatus, and then sends an attach request for performing an attach process to the radio base station apparatus. Send. Further, when receiving the attach request from the M2M terminal 204B, the radio base station apparatus transmits an attach request including the identification information of the M2M terminal 204B and its own identification information to the core network 303. Further, the host device in the core network 303 determines whether or not communication connection between the M2M terminal 204B and the radio base station device is possible based on the identification information of the M2M terminal 204B and the identification information of the radio base station device.

  As described above, with the configuration in which whether or not communication connection is possible is performed in the host device in the core network 303 that manages information related to the M2M terminal 204B and the radio base station device, whether or not communication connection is possible can be appropriately determined.

  Further, the M2M terminal 204B can perform processing for establishing a communication connection with a radio base station apparatus that is not included in the identification information list in order to cope with addition of a radio base station apparatus constituting the network. In such a case, as described above, a configuration in which whether or not communication connection is possible is determined by a higher-level device in the core network 303 that manages information related to the M2M terminal 204B and the radio base station device is more effective.

  In the communication system 403 according to the second embodiment of the present invention, the higher-level device in the core network 303 is an MME 162 for managing one or a plurality of radio base station devices.

  Thus, since MME162 which manages a wireless base station apparatus is the structure which performs the said determination, the determination of the communication connection possibility can be performed appropriately.

  Further, in the communication system 403 according to the second embodiment of the present invention, the host device in the core network 303 is the HSS 164 for managing the subscriber information of the wireless terminal devices 204A and 204B.

  As described above, since the HSS 164 that manages the subscriber information of the wireless terminal devices 204A and 204B is configured to determine whether or not communication connection is possible, the above determination can be appropriately performed.

  Further, in the communication system 403 according to the second embodiment of the present invention, the host device in the core network 303 transmits M2M until a response to the attach request transmitted from the radio base station device is transmitted to the radio base station device. It is determined whether or not communication connection between the terminal 204B and the radio base station apparatus is possible.

  With such a configuration, since a response to the attach request is not transmitted to the radio base station apparatus until it is determined whether or not communication connection is possible, communication with the radio terminal apparatus with a radio base station apparatus that is not permitted for communication connection Connection can be prevented from being established.

  The above embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 21 Radio | wireless machine 22 Signal processing part 31 Antenna 32 Circulator 33 Reception part 34 Transmission part 36 Information acquisition part 37 Judgment part 38 Communication control part 39 Storage part 40 List storage part 101A, 101B, 101MA, 101MB Wireless base station apparatus 103MA, 103MB radio | wireless Base station apparatus 101FA, 101FB, 101FC, 101FD Wireless base station apparatus 102FA, 102FB, 102FC Wireless base station apparatus 103FA, 103FB, 103FC, 103FD Wireless base station apparatus 121A, 121B, 121C Lower network 151 Gateway apparatus 162 MME (communication control apparatus) )
164 HSS (Subscriber Information Management Device)
202 wireless terminal device 202A mobile terminal (wireless terminal device)
202B, 202Ba, 202Bb, 202Bc M2M terminal (wireless terminal device)
203Ba, 203Bb, 202Bc M2M terminal (wireless terminal device)
204A Mobile terminal (wireless terminal device)
204B, 204Ba, 204Bb, 204Bc M2M terminal (wireless terminal device)
301, 302, 303 Core network (upper network)
400, 401, 402, 403 Communication network

Claims (37)

A wireless terminal device capable of communicating with a plurality of wireless base station devices,
A determination unit for determining whether or not the wireless base station device is a specific wireless base station device;
A wireless terminal device comprising: a communication control unit for performing processing for selectively establishing a communication connection with the wireless base station device determined to be the specific wireless base station device by the determination unit. The radio base station apparatus can perform an operation of permitting communication with itself to radio terminal apparatuses belonging to a predetermined subscriber group,
The radio terminal apparatus according to claim 1, wherein the determination unit determines that a radio base station apparatus that is a permission target for a subscriber group to which the radio terminal apparatus belongs is the specific radio base station apparatus. The wireless terminal device further includes:
A storage unit for storing the wireless base station device with which communication connection has been established in the past with the wireless terminal device of the own device;
The determination unit according to claim 1 or 2, wherein the determination unit preferentially determines whether or not the radio base station device stored in the storage unit is the specific radio base station device. Wireless terminal device. The wireless terminal device further includes:
An information acquisition unit for acquiring base station information related to a radio base station apparatus other than the serving base station, from a serving base station that is a radio base station apparatus to which the wireless terminal apparatus of the self is connected,
The determination unit includes the radio base station corresponding to the base station information acquired by the information acquisition unit when the radio terminal device changes a communication connection destination from the serving base station to another radio base station device. The radio | wireless terminal apparatus of any one of Claims 1-3 which selects the radio base station apparatus of a communication connection destination out of apparatus.   The wireless terminal device according to any one of claims 1 to 4, wherein Autonomous Search defined by 3GPP (Third Generation Partnership Project) is disabled. The determination unit acquires identification information of the radio base station device from the radio base station device,
The wireless terminal device further includes:
A list storage unit for storing an identification information list including identification information of one or a plurality of the radio base station devices;
The determination unit determines whether or not the radio base station apparatus is the specific radio base station apparatus based on whether or not the acquired identification information is included in the identification information list. The wireless terminal device according to 1.   When the communication connection between the wireless terminal device and the wireless base station device is established, the determination unit determines whether the identification information list includes identification information of the wireless base station device with which the communication connection is established. The wireless terminal device according to claim 6, wherein if the identification information is not included in the identification information list, the identification information is added to the identification information list. The determination unit determines whether the type of the radio base station apparatus is a predetermined type,
The radio terminal apparatus according to claim 7, wherein the communication control unit starts a process for establishing a communication connection with the radio base station apparatus determined to be the predetermined type by the determination unit. One or more radio base station apparatuses;
A communication system comprising a plurality of wireless terminal devices capable of communicating with the plurality of wireless base station devices,
The radio terminal apparatus determines whether the radio base station apparatus is a specific radio base station apparatus, and selectively selects the radio base station apparatus determined to be the specific radio base station apparatus A communication system that performs processing for establishing a communication connection.   The said specific radio base station apparatus operate | moves in the hybrid mode which permits communication with respect to both the said radio | wireless terminal apparatus which belongs to a predetermined subscriber group, and the radio | wireless terminal apparatus which belongs to a different subscriber group. Communication system. The radio base station apparatus can perform an operation of permitting communication with itself to radio terminal apparatuses belonging to a predetermined subscriber group,
The serving base station, which is a wireless base station device to which the wireless terminal device is connected, relates to a wireless base station device that is a subject of permission for a subscriber group for which communication is permitted among the wireless base station devices other than itself. Transmitting base station information to the wireless terminal device;
When the radio terminal device changes the communication connection destination from the serving base station to another radio base station device, the radio terminal device establishes a communication connection from the radio base station devices corresponding to the base station information received from the serving base station. The communication system according to claim 9 or 10, wherein a previous radio base station apparatus is selected. The communication system further includes:
A gateway device for relaying data transmitted and received between the plurality of radio base station devices and the upper network;
The one or more of the radio base station devices can perform an operation of permitting a radio terminal device belonging to a predetermined subscriber group to communicate with itself. The communication system according to item 1. The gateway device relays data transmitted and received between an upper network and a lower network including one or a plurality of the radio base station devices,
The communication system according to claim 12, wherein the subscriber group to which the wireless base station device permits communication differs for each lower network. The radio base station apparatus broadcasts its own identification information,
The radio terminal apparatus stores an identification information list including identification information of one or a plurality of the radio base station apparatuses, and whether or not the identification information notified from the radio base station apparatus is included in the identification information list The communication system according to claim 9, wherein it is determined whether or not the radio base station apparatus is the specific radio base station apparatus. The radio terminal device, after establishing a communication connection to the radio base station device, transmits an attach request for performing an attach process to the radio base station device,
When the wireless base station device receives the attach request from the wireless terminal device, the wireless base station device transmits an attach request including identification information of the wireless terminal device and identification information of the wireless terminal device to an upper network,
The host apparatus in the host network determines whether communication connection between the radio terminal apparatus and the radio base station apparatus is possible based on identification information of the radio terminal apparatus and identification information of the radio base station apparatus. 14. The communication system according to 14.   The communication system according to claim 15, wherein the host device in the host network is a communication control device for managing one or a plurality of the radio base station devices.   The communication system according to claim 15, wherein the host device in the host network is a subscriber information management device for managing subscriber information of a wireless terminal device.   The host device in the host network determines whether communication connection between the radio terminal device and the radio base station device is possible before transmitting a response to the attach request transmitted from the radio base station device to the radio base station device. The communication system according to any one of claims 15 to 17, wherein the determination is performed. A wireless terminal device capable of communicating with a plurality of wireless base station devices,
An information acquisition unit for acquiring base station information related to the radio base station device;
Based on the base station information acquired by the information acquisition unit, the wireless base station device corresponding to the base station information communicates with the wireless base station device to wireless terminal devices belonging to a predetermined subscriber group. A determination unit for determining whether or not to perform a permission operation to permit
A wireless terminal device comprising: a communication control unit for performing processing for establishing a communication connection to the wireless base station device when the wireless base station device performs the permission operation.   The determination unit determines whether or not a radio base station device corresponding to the newly acquired base station information performs the permission operation when the wireless base station device does not perform the permission operation. The wireless terminal device according to claim 19.   The radio terminal apparatus according to claim 19 or 20, wherein the communication control unit performs a camping process on the radio base station apparatus when performing a process of establishing a communication connection with the radio base station apparatus.   The radio terminal apparatus according to claim 19 or 20, wherein the communication control unit performs an attach process when performing a process of establishing a communication connection to the radio base station apparatus. A wireless terminal device capable of communicating with a plurality of wireless base station devices,
The radio base station apparatus can perform an operation of permitting communication with itself to radio terminal apparatuses belonging to a predetermined subscriber group,
The wireless terminal device, an information acquisition unit for acquiring base station information related to the wireless base station device,
Based on the base station information acquired by the information acquisition unit, the radio base station apparatus corresponding to the base station information is a radio base station apparatus for which a subscriber group to which its own radio terminal apparatus belongs is permitted. A determination unit for determining whether or not
A wireless terminal comprising: a communication control unit for performing a process of establishing a communication connection to the wireless base station device when the wireless base station device is permitted to a subscriber group to which the wireless terminal device belongs apparatus.   When the wireless base station device does not allow the subscriber group to which the wireless terminal device belongs, the determining unit determines that the wireless base station device corresponding to the newly acquired base station information The radio terminal apparatus according to claim 23, wherein the radio terminal apparatus determines whether or not the radio base station apparatus is a permission target for a subscriber group to which the terminal apparatus belongs.   Based on the base station information acquired by the information acquisition unit, the determination unit permits the wireless base station device corresponding to the base station information to communicate with a wireless terminal device belonging to a predetermined subscriber group. If the wireless base station device performs the permission operation, the wireless base station device is a wireless device to which the subscriber group to which the wireless terminal device belongs is permitted. The wireless terminal device according to claim 23 or 24, wherein it is determined whether or not the base station device.   The said communication control part performs a camping process with respect to the said radio base station apparatus, when performing the process which establishes the communication connection with respect to the said radio base station apparatus, The radio base station apparatus of any one of Claim 23-25 Wireless terminal device.   The radio terminal apparatus according to any one of claims 23 to 25, wherein the communication control unit performs an attach process when performing a process of establishing a communication connection to the radio base station apparatus.   28. The wireless terminal device according to any one of claims 1 to 8, and 19 to 27, wherein the wireless terminal device is fixedly installed or restricted to move within a predetermined area. Wireless terminal device.   The communication system according to any one of claims 9 to 18, wherein the wireless terminal device is fixedly installed or restricted to move within a predetermined area. A communication control method in a wireless terminal device capable of communicating with a plurality of wireless base station devices,
Determining whether the radio base station apparatus is a specific radio base station apparatus;
Performing a process of selectively establishing a communication connection with the radio base station apparatus determined to be the specific radio base station apparatus. One or more radio base station apparatuses;
A communication control method in a communication system including a plurality of wireless terminal devices capable of communicating with the plurality of wireless base station devices,
The wireless terminal device determining whether the wireless base station device is a specific wireless base station device; and
A communication control method, comprising: a step of selectively establishing a communication connection with the radio base station device that is determined to be the specific radio base station device. A communication control method in a wireless terminal device capable of communicating with a plurality of wireless base station devices,
Obtaining base station information related to the radio base station device;
Based on the acquired base station information, the radio base station apparatus corresponding to the base station information performs a permission operation for permitting a radio terminal apparatus belonging to a predetermined subscriber group to communicate with the radio base station apparatus. Determining whether or not to do;
And a step of establishing a communication connection to the radio base station device when the radio base station device performs the permission operation. A communication control method in a wireless terminal device capable of communicating with a plurality of wireless base station devices,
The radio base station apparatus can perform an operation of permitting communication with itself to radio terminal apparatuses belonging to a predetermined subscriber group,
The communication control method includes obtaining base station information related to the radio base station apparatus;
Based on the acquired base station information, it is determined whether or not the radio base station apparatus corresponding to the base station information is a radio base station apparatus for which a subscriber group to which its own radio terminal apparatus belongs is permitted. Steps,
A communication control method including a step of establishing a communication connection to the radio base station apparatus when the radio base station apparatus is permitted to a subscriber group to which the radio terminal apparatus belongs. A communication control program used in a wireless terminal device capable of communicating with a plurality of wireless base station devices,
On the computer,
Determining whether the radio base station apparatus is a specific radio base station apparatus;
A communication control program for executing a process of selectively establishing a communication connection with the radio base station apparatus determined to be the specific radio base station apparatus. One or more radio base station apparatuses;
A communication control program used in a communication system including a plurality of wireless base station devices capable of communicating with the wireless base station device,
On the computer,
The wireless terminal device determining whether the wireless base station device is a specific wireless base station device; and
A communication control program for causing the radio terminal apparatus to execute a process of selectively establishing a communication connection with the radio base station apparatus determined to be the specific radio base station apparatus. A communication control program used in a wireless terminal device capable of communicating with a plurality of wireless base station devices,
On the computer,
Obtaining base station information related to the radio base station device;
Based on the acquired base station information, the radio base station apparatus corresponding to the base station information performs a permission operation for permitting a radio terminal apparatus belonging to a predetermined subscriber group to communicate with the radio base station apparatus. Determining whether or not to do;
A communication control program for executing a process of establishing a communication connection to the radio base station apparatus when the radio base station apparatus performs the permission operation. A communication control program used in a wireless terminal device capable of communicating with a plurality of wireless base station devices,
The radio base station apparatus can perform an operation of permitting communication with itself to radio terminal apparatuses belonging to a predetermined subscriber group,
The communication control program is
On the computer,
Obtaining base station information related to the radio base station device;
Based on the acquired base station information, it is determined whether or not the radio base station apparatus corresponding to the base station information is a radio base station apparatus for which a subscriber group to which its own radio terminal apparatus belongs is permitted. Steps,
A communication control program for executing a process of establishing a communication connection to the radio base station apparatus when the radio base station apparatus is a permission target for a subscriber group to which its own radio terminal apparatus belongs .

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