JP6400096B2 - Wireless communication system and terminal device - Google Patents

Wireless communication system and terminal device Download PDF

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Publication number
JP6400096B2
JP6400096B2 JP2016529330A JP2016529330A JP6400096B2 JP 6400096 B2 JP6400096 B2 JP 6400096B2 JP 2016529330 A JP2016529330 A JP 2016529330A JP 2016529330 A JP2016529330 A JP 2016529330A JP 6400096 B2 JP6400096 B2 JP 6400096B2
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information
network
operator
unit
license
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JPWO2015194505A1 (en
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勝利 石倉
勝利 石倉
俊平 布施
俊平 布施
佑介 高木
佑介 高木
桂二 彦惣
桂二 彦惣
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シャープ株式会社
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Priority to PCT/JP2015/067189 priority patent/WO2015194505A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information

Description

The present invention relates to a radio communication system及 beauty terminal device, in particular a radio communication system used in a mobile phone network.
This application claims priority on June 18, 2014 based on Japanese Patent Application No. 2014-125820 for which it applied to Japan, and uses the content for it here.

In the third generation partnership project (3GPP: 3rd Generation Partnership Project), a communication service using LTE (Long Term Evolution) or LTE-Advanced (LTE-A) in an unlicensed band (hereinafter referred to as this communication service) ) Is being considered. The unlicensed band is a frequency band that can be used without requiring authorization from the authorities. An unlicensed band is also called a license-free frequency band. On the other hand, a frequency band that can be used by authorization by an authority is called a licensed band or a frequency band that requires a license. LTE and LTE-A are both typical communication standards for mobile phones. In other words, this communication service can be realized by using a license-free band (for example, 5 GHz band, etc.) common to each country even for a communication carrier that does not have a license band.
Further, since this communication service uses a license-free band, it is expected to be provided relatively economically or free of charge. For this reason, it is expected that the number of users who want to use the communication service by preferentially selecting the network of the communication carrier in the service providing area of the communication carrier providing the communication service is expected. .

JP 2012-109662 A

3GPP TS 23.122, 3rd Generation Partnership Project, March 2014, V12.4.0

  In order to select a network of a telecommunications carrier that provides this communication service, a correspondence table in which the country code (MCC: Mobile Country Code) and the carrier number (MNC: Mobile Network Code) are associated with each other. Must be stored in advance in a terminal device, a SIM (Subscriber Identity Module) card, or the like (see Non-Patent Document 1). For this reason, when this communication service is widely used worldwide, it is necessary to store a country code and a carrier number in a correspondence table for a large number of carriers. Furthermore, each time a country where this communication service is authorized or a communication carrier providing this communication service appears, it is necessary to add a country code and a carrier number to the correspondence table.

  On the other hand, in order for the terminal device to use this communication service, for example, it is necessary to search for the frequency band of the network provided by the communication carrier stored in the correspondence table from all the frequency bands that can be transmitted and received, and perform location registration ( Patent Document 1). If the number of country codes or carrier numbers indicating communication carriers stored in the correspondence table increases, the time required for search and power consumption increase.

  One embodiment of the present invention has been made in view of the above points, and provides a terminal device that can be efficiently connected to a network of a telecommunications carrier that uses a license-free band.

One aspect of the present invention has been made to solve the above problems, and one aspect of the present invention is a wireless communication system including a base station device and a terminal device, wherein the base station device has a license. Generating network operator information including specific identification information that is not assigned to any country or any operator as identification information indicating a network operator that does not use a bandwidth and uses a license-free bandwidth ; Broadcast information including network operator information is transmitted to the terminal device, the terminal device detects a cell that may be located based on a received signal, and the base station device received from the detected cell wherein extracting the network service provider information from the broadcast information, upon identifying the specific identification information from the network operator information, the network events User information is a wireless communication system to select a network operator indicated.

  According to one embodiment of the present invention, it is possible to efficiently connect to a network of a communication carrier that uses a license-free band.

It is a conceptual diagram which shows an example of the communication system in the 1st Embodiment of this invention. It is a schematic block diagram which shows the structure of the base station apparatus which concerns on the 1st Embodiment of this invention. It is a schematic block diagram which shows the structure of the terminal device which concerns on the 1st Embodiment of this invention. It is a flowchart which shows the communication process which concerns on the 1st Embodiment of this invention. It is a schematic block diagram which shows the structure of the base station apparatus which concerns on the 2nd Embodiment of this invention. It is a schematic block diagram which shows the structure of the terminal device which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows the communication process which concerns on the 2nd Embodiment of this invention. It is a schematic block diagram which shows the structure of the terminal device which concerns on the 2nd Embodiment of this invention. It is a figure which shows an example of an operation mode setting screen.

(First embodiment)
FIG. 1 is a conceptual diagram illustrating an example of a communication system 1 in the present embodiment.
The communication system 1 includes base station apparatuses Ua, Ub, Lb and a terminal apparatus Tm. An ellipse surrounding each base station apparatus indicates a cell that is a range in which radio waves from each base station apparatus reach. Cells X-Ua, Y-Ub, and Y-Lb are cells of base station apparatuses Ua, Ub, and Lb, respectively. Cells X-Ua, Y-Ub, and Y-Lb may mean base station apparatuses Ua, Ub, and Lb, respectively.
A broken-line arrow starting from each base station device indicates that each base station device transmits a broadcast signal by radio waves at a predetermined time interval (for example, 50 ms). The notification signal is a signal indicating network system information (System Information). The system information includes network operator (operator) information. Solid arrows indicate that communication is being performed between the devices shown at both ends.

  The base station apparatus Ua is a base station apparatus of the business operator X, and is connected to the core network of the business operator X. The base station apparatus Ua can provide a communication service using the license-free band U1. The base station apparatus Ua uses the license-unnecessary band U1 to transmit a notification signal indicating that the business operator X is a business operator having a license-unnecessary band.

The base station apparatuses Ub and Lb are the base station apparatuses of the operator Y, and are connected to each other via, for example, the X interface and connected to the core network of the operator Y. The base station apparatuses Ub and Lb can provide communication services by transmitting user data using the license unnecessary band U1 and the license band L1, respectively. The base station apparatuses Ub and Lb transmit broadcast signals using the license unnecessary band U1 and the license band L1, respectively. These notification signals may be notification signals based on existing regulations.
However, the former notification signal may not be transmitted.

The terminal device Tm is equipped with a SIM card that stores business information of the business operator Y according to a contract signed by the user of the terminal device Tm with the business operator Y. This card may be a USIM (Universal Subscriber Identity Module) card. In the conventional configuration, the terminal device Tm performs communication using the network (HPLMN: Home Public Land Mobile Network) of the operator Y detected on the license band L1.
On the other hand, in the example illustrated in FIG. 1, the terminal device Tm is located in a region where the cells X-Ua, Y-Ub, and Y-Lb overlap. At this position, the terminal device Tm can detect the network of the operator Y on the license band L1, and can detect the networks of the operators X and Y on the license-unnecessary band U1. However, different frequency bands on the license unnecessary band U1 are used between the operators X and Y. When the terminal device Tm selects the network of the operator X among the detected networks, the terminal device Tm can transmit data using the selected network. Thereby, the terminal device Tm can use a relatively economical communication service using the license-free band U1 by the operator X. According to the present embodiment, it is possible to efficiently connect the operator X to the network with the configuration described below.

FIG. 1 illustrates an example in which the base station apparatuses Ub and Lb that transmit signals using the license unnecessary band U1 and the license band L1 of the operator Y are separate, but the base station apparatuses Ub and Lb , It may be configured as one integrated base station apparatus ULb.
In the example illustrated in FIG. 1, the number of base station apparatuses Ua, Ub, and Lb is 3 and the number of terminal apparatuses Tm is 1 for the sake of explanation. However, the present invention is not limited to this. The number of base station devices may be greater than 1, 2, or 3, and the number of terminal devices may be greater than 1.

(Configuration of base station equipment)
Next, the configuration of the base station apparatus 10 according to this embodiment will be described.
FIG. 2 is a schematic block diagram illustrating a configuration of the base station apparatus 10 according to the present embodiment.
The base station apparatus 10 provides a communication service by transmitting data using a license-free band like the base station apparatus Ua (FIG. 1). The base station device 10 is, for example, a base station device that is used by an operator who does not have a license band and can use only a license-unnecessary band.

The base station apparatus 10 includes a communication unit 11 and a control unit 12.
The communication unit 11 performs wireless communication with the terminal device 20 (described later) using a predetermined method (for example, LTE, LTE-A). The communication unit 11 includes N (N is an integer of 1 or larger, for example, 2) transmission units, that is, a first transmission unit 111-1 to an Nth transmission unit 111-N, N reception units, That is, the first receiving unit 112-1 to the Nth receiving unit 112-N are configured. In the following description, when the first transmitter 111-1 to the Nth transmitter 111 -N are not particularly distinguished, they may be referred to as the transmitter 111, and the first receiver 112-1 to the Nth receiver 112. If -N is not particularly distinguished, it may be simply referred to as the receiving unit 112.

The first transmission unit 111-1 to the N-th transmission unit 111 -N transmit various types of data from the antenna using radio waves using license-free bands U <b> 1 to UN having different frequencies. In addition, the first receiving unit 112-1 to the Nth receiving unit 112-N receive various data with radio waves of license-free bands U1 to UN having different frequencies via antennas.
The license-free bands U1 to UN may be license-free frequency bands defined by a predetermined communication standard. For example, the license-unnecessary bands U1 and U2 are a 5.0 MHz band and a 2.4 MHz band.
The parts that can be shared by the first transmitter 111-1 to the Nth transmitter 111 -N and the first receiver 112-1 to the Nth receiver 112 -N may be shared. Further, the parts that can be shared within the frequency band that can be used by the transmission unit 111 and the reception unit 112 may be shared.

The control part 12 is comprised including the provider information processing part 121, and performs the various processes regarding communication. Such processing includes, for example, allocation of radio resources to the terminal devices located in the area, control of the carrier frequency and bandwidth at the transmission unit 111 and the reception unit 112, and transmission of received data received from the terminal devices to the core network There are transmission data transmission from the core network to the terminal device, generation and transmission of a notification signal, and the like. The broadcast signal is transmitted at an interval of 50 ms using, for example, a broadcast control channel (BCCH: Broadcast Control Channel).
The control unit 12 includes, for example, a processing device such as a CPU (Central Processing Unit) and a storage device such as a RAM (Random Access Memory).

The business operator information processing unit 121 reads business operator information indicating a network of a communication business operator set in advance in the storage device, and transmits a notification signal including the business operator information to the first transmission unit 111-1 to the Nth transmission unit. Transmit into the cell via 111-N.
The carrier information includes, for example, a country code (MCC: Mobile Country Code), a carrier number (MNC: Mobile Network Code), and other numbers.

In the business operator information processing unit 121, any one of (1) to (3) is set as business operator information of a business operator that does not have a license band and has only a license-unnecessary band.
(1) A specific common identification number representing a license-unnecessary band is used as a country code (MCC).
For example, a country code (MCC) that is not assigned to any country and a company number (MNC) assigned to the company are set in the company information processing unit 121, and the country code is set. And business information including business number is generated. The country code and the company code are, for example, MCC = 999 and MNC = 90. The specific common identification number used as the country code (MCC) may not be the actual country code. The actual country code is the country code of the country where the business is established or the country where the main business is located.

(2) A specific common identification number representing a license-unnecessary band is used as a carrier number (MNC).
For example, an actual country code (MCC) and an operator number (MNC) not assigned to any operator are set in the operator information processing unit 121, and the country code and the operator number are set. Business information including The country code and the company code are, for example, MCC = 440 and MNC = 99. MCC = 440 is a country code assigned to Japan. The specific common identification number used as the business operator number (MNC) may not be used even if the business operator number is assigned to the business operator.
Note that the business operator information processing unit 121 uses the specific common identification number as a specific common identification number using only a predetermined part of the business number (for example, the last digit). Digits may be used as business numbers. This makes it possible to identify both the business operator and the use of the license-free band based on the business operator number.

(3) A specific common identification number representing a license-unnecessary band is used as a country code (MCC) and an operator number (MNC).
For example, a country code (MCC) that is not assigned to any country and a company number (MNC) that is not assigned to any company are set in the company information processing unit 121. Business information including the country code and business number is generated. The country code and the company code are, for example, MCC = 999 and MNC = 99.

(Configuration of terminal device)
Next, the configuration of the terminal device 20 according to the present embodiment will be described.
FIG. 3 is a schematic block diagram illustrating a configuration of the terminal device 20 according to the present embodiment.
The terminal device 20 is an electronic device that can communicate with a counterpart device via the base station device 10, for example, a mobile phone (including a smartphone), a tablet terminal device, a communication card, and the like. The terminal device 20 can transmit and receive data via the base station device 10 using a license-unnecessary band like the terminal device Tm (FIG. 1).

The terminal device 20 includes a communication unit 21 and a control unit 22, and includes a connector (not shown) that removably fixes the SIM card 23.
The communication unit 21 performs wireless communication with the base station apparatus 10 using a predetermined method (for example, LTE, LTE-A).
The communication unit 21 includes M (M is an integer of 2 or larger, for example, 3) first transmission units 211-1 to 211 -M and M first reception units 212-1. To M-th receiving unit 212-M. In the following description, when there is no particular distinction between the first transmission unit 211-1 to the M-th transmission unit 211 -M, the first transmission unit 211-1 to the M-th reception unit 212-are referred to as the transmission unit 211. When M is not particularly distinguished, it is referred to as a receiving unit 212.

The first transmission unit 211-1 to the M-th transmission unit 211 -M transmit various types of data from the antenna using radio waves using different frequency bands. The first receiving unit 212-1 to the M-th receiving unit 212-M use various frequency bands, and receive various types of data with radio waves having different frequency bands via the antenna.
The frequency bands used by the first transmission unit 211-1 to the M-th transmission unit 211 -M and the first reception unit 212-1 to the M-th reception unit 212 -M include at least one license unnecessary band U 1, U 2,. And at least one license band L1, L2,... The license-unnecessary bands U1, U2,... May be license-free frequency bands defined by a predetermined communication standard. For example, the license unnecessary band U1 is a 5.0 MHz band. The license bands L1, L2,... May be frequency bands that require a license defined by a predetermined communication standard. For example, the license bands L1 and L2 are Band1 (2.0 MHz band) and Band2 (800 MHz band) defined by LTE.
The parts that can be shared by the first transmission unit 211-1 to the M-th transmission unit 211 -M and the first reception unit 212-1 to the M-th reception unit 212 -M may be shared. Further, the parts that can be shared within the frequency band that can be used by the transmission unit 211 and the reception unit 212 may be shared.

  The control unit 22 functions as a cell candidate detection unit 221, an operator identification unit 222, a network selection unit 223, and a location registration unit 224, and executes various processes related to communication. The control unit 22 includes a processing device such as a CPU (Central Processing Unit) and a main storage device such as a RAM (Random Access Memory).

The cell candidate detection unit 221 measures the intensity for each frequency band of the reception signal received by the reception unit 212, and detects a signal having a frequency band component whose measured intensity is higher than a preset intensity.
As a result, a cell candidate in which the device itself may be located is detected (cell search). A broadcast signal transmitted from each base station apparatus is used as a received signal. In the example illustrated in FIG. 1, the cell X-Ua of the business operator X and the cells Y-Ub and Y-Lb of the business operator Y are detected.

The business operator identification unit 222 extracts business operator information from each of the signals detected by the cell candidate detection unit 221, and either or both of the country code and the business enterprise number indicated by the extracted business operator information represent a license-free band. It is determined whether or not it matches a specific common identification number. In the business operator identification unit 222, a predetermined country code (MCC), a business operator number (MNC), or both, which are specific common identification numbers representing license-free bands, are set in advance.
If it is determined that they match, the business operator identification unit 222 determines that information indicating a business operator that uses only the license-unnecessary band is included. If it is determined that they do not match, the business entity identification unit 222 determines that information indicating that the business operator uses only the license-unnecessary band is not included. As a result, it is identified whether or not the detected cell candidate carrier is a carrier that uses only a license-free band.

The network selection unit 223 selects an operator's network to be used for communication.
When a carrier that uses only a license-unnecessary band is identified for the detected cell candidate carrier, the network selection unit 223 selects the network of the carrier.
If the detected cell candidate operator does not identify the operator that uses only the license-unnecessary band, the network selection unit 223 reads the operator information according to the order stored in the SIM card 23. The network selection unit 223 selects the provider network indicated by the provider information extracted by the provider identification unit 222, which is the provider information that matches the read provider information.

  The location registration unit 224 selects the frequency band of the operator selected by the network selection unit 223. Specifically, when an operator that uses only a license-unnecessary band is identified, the location registration unit 224 selects a frequency band of a signal having operator information including a specific common identification number that represents the license-unnecessary band. To do. When the operator that uses only the license-free band is not identified, the frequency band of the signal having the operator information that matches the read operator information and is extracted by the operator identifying unit 222 Select.

  The location registration unit 224 performs location registration on the network of the selected business operator. Here, the location registration unit 224 transmits a location registration request signal to the network of the carrier selected through the base station apparatus using the signal in the selected frequency band. The location registration unit 224 selects the roaming contract between the provider related to the provider information stored in the SIM card 23 and the other provider. Even if a location registration is performed with a location registration server in the network of the operator contracted by the user via the base station device 10 of the other operator using a signal in the frequency band of another operator using only the license-free band. It doesn't matter. When location registration completion information (attach accept) is received via a base station apparatus from a network that has performed location registration within a predetermined time (for example, within 90 seconds) after transmission of the location registration request signal, the location registration unit 224 In other cases, the position registration unit 224 determines that the position registration has failed.

  The SIM card 23 stores a set in which business information of a business contracted with a subscriber is associated with identification information (for example, a telephone number, etc.) used when communicating on the business operator's network. ing. If there are multiple such sets, they are stored in descending order of priority.

(Communication processing)
Next, communication processing according to the present embodiment will be described.
FIG. 4 is a flowchart showing communication processing according to the present embodiment.
(Step S101) The control unit 22 of the terminal device 20 is activated in response to power being turned on. The control unit 22 reads a predetermined program from the main storage device and starts executing the read program. Thereafter, the process proceeds to step S102.
(Step S <b> 102) The cell candidate detection unit 221 detects a signal of a frequency band component that is a cell candidate in which the device itself may be located by performing a cell search. Thereafter, the process proceeds to step S103.

(Step S103) The business operator identification unit 222 extracts business information from the signal detected by the cell candidate detection unit 221, and the extracted business information uses information on a business that uses only a license-free band (represents a license-free band). It is determined whether or not a common identification number is included. If it is determined that it is included (YES in step S103), the process proceeds to step S104. If it is determined not to be included (NO in step S103), the process proceeds to step S105.

(Step S104) The network selection unit 223 selects a network of a business operator that uses only a license-unnecessary band. Thereafter, the process proceeds to step S106.
(Step S105) The network selection unit 223 reads the business operator information according to the connection priority stored in the SIM card 23, and the read business operator information matches the business operator information extracted by the business operator identification unit 222. It is determined whether or not to do. The network selection unit 223 selects the network of the business operator that has been determined to match. Thereafter, the process proceeds to step S106.

(Step S106) The location registration unit 224 selects the frequency band of the operator selected by the network selection unit 223. Thereby, an available cell of the selected operator is selected.
Thereafter, the process proceeds to step S107.
(Step S107) The location registration unit 224 performs location registration on the network of the selected operator. If the location registration is successful, the location registration unit 224 receives location registration completion information from the network. Thereafter, the processing shown in FIG. 4 is terminated, and a standby state is established in which communication can be performed using the network.
In step S107, if location registration to the network selected in step S104 fails, the process may proceed to step S105.

As described above, the terminal device 20 according to the present embodiment includes the cell candidate detection unit 221 that detects a cell that may be present based on the received signal. In addition, the terminal device 20 includes an operator identification unit 222 that identifies information indicating an operator that uses a license-unnecessary band from a received signal received from a cell detected by the cell candidate detection unit 221. In addition, the terminal device 20 includes a location registration unit 224 that preferentially registers a location in the network of the business operator that uses the license-free band identified by the business operator identification unit 222.
With this configuration, it is possible to preferentially select an operator's network that uses a license-free band, and by registering the location in the selected network, it is possible to efficiently connect to that network. For this reason, it is not necessary to store business information such as individual country codes and business numbers in the SIM card 23 in advance.

Further, the carrier identification unit 222 determines whether or not the carrier information included in the signal received by the cell candidate detection unit 221 includes predetermined identification information indicating a carrier using a license-unnecessary band.
With this configuration, it is possible to identify an operator's network that uses a license-free band without increasing the amount of information of the entire broadcast information transmitted by the base station device 10.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. About the same structure as embodiment mentioned above, the same code | symbol is attached | subjected and description is used.
A communication system 1a (not shown) according to the present embodiment includes at least one base station device 10a and a terminal device 20a.

(Configuration of base station equipment)
Next, the configuration of the base station apparatus 10a according to this embodiment will be described.
FIG. 5 is a schematic block diagram showing the configuration of the base station apparatus 10a according to this embodiment.
The base station apparatus 10a includes a communication unit 11 and a control unit 12a.
Similar to the control unit 12 (FIG. 2), the control unit 12a includes a processing device and a main storage device, and executes various processes related to communication. The control part 12a implement | achieves the function of the provider success / failure information notification processing part 121a.

The business operator success / failure information notification processing unit 121a stores business operator success / failure information and business operator information in advance. The carrier validity information is information indicating whether or not the communication carrier of the base station apparatus 10a is a carrier network that uses only a license-free band. For example, it is 1-bit information in which “1” is set for a business using only a license-free band, and “0” is set otherwise. The carrier information stored in advance includes the country code (MCC) assigned to the country in which the telecommunications carrier of the base station device 10a has the principal place of business, and the business assigned to the telecommunications carrier, as in the conventional base station device. This is business information indicating a company number (MNC).
The business propriety information notification processing unit 121a reads the business propriety information and business information stored in advance, and reads the business propriety information and business information that have been read out at a predetermined time interval from the first transmission units 111-1 to 111-1. It transmits in a cell via N transmission part 111-N.

The company propriety information notification processing unit 121a uses any one of the following signals (1) to (3) when transmitting the company propriety information and the company information.
(1) The company propriety information notification processing unit 121a includes the company propriety information and the company information in the notification signal and transmits the notification signal. For example, in the LTE scheme, the business propriety information and the business enterprise information are transmitted using BCCH.
(2) The business operator success / failure information notification processing unit 121a includes business operator success / failure information and business operator information in a control signal common to the users, and transmits the control signal. For example, in the LTE scheme, the business propriety information and the business operator information are transmitted using PDCCH (Physical Downlink Control Channel). However, for business operator information, the business operator success / failure information notification processing unit 121a may transmit information indicating the MNC as a notification signal as in the past.
(3) The business operator success / failure information notification processing unit 121a includes business operator success / failure information and business operator information in a control signal unique to each user, and transmits the control signal. For example, in the LTE scheme, the operator success / failure information and the operator information are transmitted using PDSCH (Physical Downlink Shared Channel). However, for business operator information, the business operator success / failure information notification processing unit 121a may transmit information indicating the MNC as a notification signal as in the past.

(Configuration of terminal device)
Next, the configuration of the terminal device 20a according to the present embodiment will be described.
FIG. 6 is a schematic block diagram showing the configuration of the terminal device 20a according to this embodiment.
The terminal device 20a includes a communication unit 21 and a control unit 22a.
Similar to the control unit 22 (FIG. 3), the control unit 22a includes a processing device and a main storage device, and executes various processes related to communication. The control unit 22a functions as a cell candidate detection unit 221, an operator identification unit 222, a network selection unit 223, a location registration unit 224, and an operator propriety information acquisition unit 225a.

The business operator pass / fail information acquisition unit 225a acquires the business operator pass / fail information by extracting the business operator pass / fail information from a notification signal or a control signal that is a signal detected by the cell candidate detection unit 221.
In addition, although the provider identification part 222 extracts provider information from the alerting signal or control signal which the cell candidate detection part 221 detected, does the extracted provider information contain the specific common identification number showing a license unnecessary band? It is not necessary to perform the process of determining whether or not.

(Communication processing)
Next, communication processing according to the present embodiment will be described.
FIG. 7 is a flowchart showing communication processing according to the present embodiment.
The process shown in FIG. 7 includes steps S101, S102, S103a, S104 to S107, and S111a.
After steps S101 and S102 are completed, the process proceeds to step S111a.
(Step S <b> 111 a) The operator success / failure information acquisition unit 225 a acquires the operator success / failure information from a notification signal or a control signal that is a signal detected by the cell candidate detection unit 221. In addition, the provider identification unit 222 extracts the provider information from the notification signal or control signal detected by the cell candidate detection unit 221. Thereafter, the process proceeds to step S103a.
(Step S103a) The business operator identifying unit 222 determines whether the business operator pass / fail information acquired by the business operator pass / fail information acquiring unit 225a is information (eg, “1”) of the business operator using only the license-unnecessary band (for example, "0"). If it is determined that the service provider uses only a license-free band (for example, “1”) (YES in step S103a), the process proceeds to step S104. If it is determined that this is not the case (for example, “0”) (NO in step S103a), the process proceeds to step S105.
After the process of steps S104 to S107 is completed, the process shown in FIG.

As described above, the terminal device 20a according to the present embodiment further includes the business operator acceptance information acquisition unit 225a that acquires information indicating whether or not the network is a business operator that uses a license-unnecessary band.
With this configuration, it is possible to identify a network of business operators using license-free bands and to identify individual business operator networks.

(Third embodiment)
Next, a third embodiment of the present invention will be described. About the same structure as embodiment mentioned above, the same code | symbol is attached | subjected and description is used.
A communication system 1b (not shown) according to the present embodiment includes at least one base station device 10a and a terminal device 20b.

(Configuration of terminal device)
Next, the configuration of the terminal device 20b according to the present embodiment will be described.
FIG. 8 is a schematic block diagram showing the configuration of the terminal device 20b according to the present embodiment.
The terminal device 20b includes a communication unit 21, a control unit 22b, an operation input unit 24b, and a display unit 25b.

Similar to the control unit 22a (FIG. 6), the control unit 22b includes a processing device and a main storage device, and executes various processes related to communication. The control unit 22b functions as a cell candidate detection unit 221, an operator identification unit 222, a network selection unit 223, a location registration unit 224, an operator validity information acquisition unit 225a, and an operation mode setting processing unit 226b.
A plurality of operation modes are set in the operation mode setting processing unit 226b in advance, and any one of the plurality of operation modes is selected according to the input signal input from the operation input unit 24b.

The plurality of operation modes are, for example, a normal mode (mode 1) and a license-free operator priority mode (mode 2). In the normal mode (mode 1), the location registration in the operator network indicated by the operator information is performed in the order in which the operator information is stored in the SIM card 23 without giving priority to the network of the license-free operator. This is the mode of operation to try. That is, when the normal mode is selected, the control unit 22b skips the processes of steps S111a and S103a after the process of step S102 is completed in the communication process shown in FIG. 7, and proceeds to step S105.
The license-free business operator priority mode (mode 2) is an operation mode in which location registration is attempted with priority given to the network of the license-free business operator. That is, when the license-free business operator priority mode is selected, the control unit 22b attempts to connect to the network by the communication process shown in FIG.

The operation input unit 24b receives an operation input by the user and generates an input signal corresponding to the received operation input. The operation input unit 24b outputs the generated input signal to the control unit 22b. The operation input unit 24b includes, for example, a pointing device such as a touch sensor, a keyboard, or the like that detects coordinates with which an operation object such as a user's finger or stylus pen comes into contact.
The display unit 25b displays an image based on the display signal input from the control unit 22b. The display unit 25b displays various setting screens such as an image and text received from the counterpart device, and an operation mode setting screen. The display unit 25b is, for example, a liquid crystal display (LCD), an organic EL display (Organic Electroluminescence Display), or the like. The display unit 25b may be configured as a touch panel integrated with the operation input unit 24b.

(Example of operation mode setting screen)
FIG. 9 is a diagram illustrating an example of the operation mode setting screen.
In the example illustrated in FIG. 9, the terminal device 20b includes a touch panel in which an operation input unit 24b and a display unit 25b are integrated on one surface of a housing, and an operation mode setting screen is displayed on the display unit 25b. The setting image signal indicating the operation mode setting screen is set in advance in the operation mode setting processing unit 226b (FIG. 8). When the operation mode setting is instructed by the input signal input from the operation input unit 24b, the operation mode setting processing unit 226b outputs the set image signal set to the display unit 25b, thereby displaying the operation mode setting screen. The

  The operation mode setting screen includes a character string “Please select a terminal mode” as a display for prompting selection of the operation mode, and two buttons indicating selectable operation modes. Character strings indicating “1. normal mode” and “2. license-unnecessary operator priority mode” are displayed on the two buttons, respectively. The display of “1. Normal mode” and “2. License-free business operator priority mode” indicates that the normal mode and the license-free business operator can be selected by being instructed by operation.

  When the display area of each button is instructed (pressed) by an input signal, the operation mode setting processing unit 226b selects an operation mode related to the button displayed in the display area. For example, when the display area of “2. License-less company priority mode” is pressed, the operation mode setting processing unit 226b selects the license-less company priority mode. Note that the operation mode setting processing unit 226b may select a corresponding operation mode based on an input signal generated by a key operation on the same number key. For example, when the number key “2” is pressed, the operation mode setting processing unit 226b may select the license-free business operator priority mode.

As described above, the terminal device 20b according to the present embodiment sets, based on the operation input, whether or not to perform location registration in preference to the network of the carrier that uses the license-free band identified by the carrier identification unit 222. The operation mode setting processing unit 226b is provided.
With this configuration, the user can arbitrarily select whether or not to use the license-free band preferentially when performing communication.

(Modification)
As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above, and various design changes and the like can be made without departing from the scope of the present invention. It is possible to
The communication system 1b (not shown) may include at least one base station device 10 (FIG. 2) and a terminal device 20b.
Similarly to the control unit 22 (FIG. 3), the control unit 22b includes a processing device and a main storage device, and includes a cell candidate detection unit 221, an operator identification unit 222, a network selection unit 223, and a location registration unit. 224 and the operation mode setting processing unit 226b.

  The cell candidate detection unit 221 (FIGS. 3, 6, and 8) measures an index indicating other signal quality instead of the intensity for each frequency band of the received signal, and the measured index is higher than the preset index. However, it is also possible to detect a signal having a frequency band component that is good. As such an index, for example, a signal-to-interference plus noise ratio (SINR), a peak-to-average power ratio (PAPR), and the like can be used.

  In addition, when the network selection unit 223 (FIGS. 3, 6, and 8) detects a plurality of operator networks that use only the license-unnecessary band, one of the detected networks may be selected. . For example, the network selection unit 223 may select a network in which the above-described index indicating signal quality indicates the best signal quality, or a network in which the usage fee is most economical.

  In the above-described embodiment, when roaming is possible between a plurality of networks, the terminal devices 20, 20a, and 20b communicate with each other in any of the standby states. It can be carried out. For example, it is assumed that when the roaming is possible between the network X of the business operator X and the network Y of the business operator Y, the terminal devices 20, 20a, and 20b are in a standby state on the network X. When data is transmitted from the counterpart device to the terminal devices 20, 20 a, and 20 b via the network Y, the transmitted data is transferred from the network Y to the network X. The terminal devices 20, 20 a, and 20 b can receive data from the counterpart device via the network X.

  Further, the terminal devices 20, 20a, 20b are provided with a SIM card 23 in which specific business operator information indicating a specific common identification number representing a license-unnecessary band and an identification number of the own device are stored in association with each other. Communication is always possible using the license-free band of the operator. Moreover, the SIM card | curd 23 can be abbreviate | omitted by memorize | storing those information beforehand in the memory | storage part of the terminal device 20, 20a, 20b.

The embodiment described above can also be implemented in the following manner.
(1) A wireless communication system including a base station device and a terminal device, wherein the base station device transmits broadcast information including common identification information indicating a network operator using a license-unnecessary band to the terminal device. The terminal device is a wireless communication system that receives the broadcast information from the base station device and identifies a network operator using a license-free band from the broadcast information.

(2) The wireless communication system according to (1), wherein the broadcast information includes network operator information indicating a network operator, and the network operator information includes the common identification information as country code information of the network operator.

(3) The wireless communication system according to (1), wherein the broadcast information includes network operator information indicating a network operator, and the network operator information includes the common identification information as operator number information of the network operator. .

(4) generating network operator information including a communication unit that communicates with a terminal device in a network using a license-free bandwidth, and information indicating whether or not the network operator uses a license-free bandwidth; A wireless communication base station comprising: a carrier information processing unit that transmits carrier information through the communication unit.

(5) A detection unit that detects a cell that may be located based on a received signal, and a network that indicates a network operator that uses a license-free band from the received signal received from the cell detected by the detection unit A terminal device comprising: a business operator identifying unit that identifies business operator information; and a network selecting unit that selects a business operator network indicated by the network business operator information identified by the business operator identifying unit.

Note that some of the base station devices 10 and 10a and the terminal devices 20, 20a, and 20b, for example, the control units 12, 12a, 22, 22a, and 22b may be realized by a computer.
In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed.
Moreover, you may implement | achieve part or all of the base station apparatuses 10 and 10a and the terminal devices 20, 20a, and 20b in embodiment mentioned above as integrated circuits, such as LSI (Large Scale Integration). Each functional block of the base station devices 10 and 10a and part of the terminal devices 20, 20a and 20b may be individually processorized, or a part or all of them may be integrated into a processor. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to the advancement of semiconductor technology, an integrated circuit based on the technology may be used.

  One embodiment of the present invention can be applied to a wireless communication system, a wireless communication base station, a terminal device, and the like that need to be efficiently connected to a network of a telecommunications carrier that provides a communication service using a license-free band. it can.

1, 1a, 1b ... communication system,
10, 10a ... base station device, 11 ... communication unit,
111 (111-1 to 111-N) ... transmission unit,
112 (112-1 to 112-N) ... receiving unit,
12, 12a ... control unit,
121 ... business operator information processing unit, 121a ... business operator acceptance information notification processing unit,
20, 20a, 20b ... terminal device, 21 ... communication unit,
211 (211-1 to 211 -M) ... transmission unit,
212 (212-1 to 212 -M) ... receiving unit,
22, 22a, 22b ... control unit,
221 ... Cell candidate detection unit, 222 ... Operator identification unit, 223 ... Network selection unit,
224 ... Location registration unit, 225a ... Business success / failure information acquisition unit,
226b ... operation mode setting processing unit,
23 ... SIM card, 24b ... operation input unit, 25b ... display unit

Claims (5)

  1. A wireless communication system comprising a base station device and a terminal device,
    The base station device
    Generate network operator information that includes specific identification information that cannot be assigned to any country or any operator as identification information that indicates a network operator that does not use the license band and that uses the unlicensed bandwidth , Sending broadcast information including the network operator information to the terminal device;
    The terminal device
    Detect cells that may be located based on the received signal,
    Extracting the network operator information from the broadcast information of the base station device received from the detected cell ;
    A wireless communication system that selects a network of an operator indicated by the network operator information when the specific identification information is identified from the network operator information .
  2. The broadcast information includes network operator information indicating a network operator,
    The network service provider information, the wireless communication system of claim 1 including a pre Ki識 specific information as the country code information of the network operator.
  3. The broadcast information includes network operator information indicating a network operator,
    The network service provider information, the wireless communication system of claim 1 including a pre Ki識 specific information as a business party number information of the network operator.
  4. A detection unit for detecting a cell that may be located based on a received signal;
    The detection unit extracts the network service provider information from the broadcast information received from the cell detected, from said network service provider information without using a licensed spectrum and as identification information, representing the network operators to use the unlicensed band An operator identification section that identifies specific identification information that cannot be assigned to any country or operator ,
    When the front Article vendor identification unit has identified the identification information, the network selection unit for selecting a network operator indicated by the network service provider information,
    A terminal device comprising:
  5. An operation mode setting processing unit that displays an operation mode setting screen showing at least a first mode and a second mode as selectable operation modes, and selects one of the operation modes by an operation input;
    Wherein the first mode, the SIM card identification information indicating a network of a network operator is stored, an operation mode for selecting a network in the order in which the identification information is stored,
    The terminal device according to claim 4 , wherein the second mode is an operation mode in which priority is given to a network of a network operator that uses a license-free bandwidth.
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