JP6375245B2 - Terminal and communication control method - Google Patents

Description

  The present invention relates to a terminal and a communication control method.

  A mobile communication system compliant with 3GPP (3rd Generation Partnership Project) standards such as 3G and LTE (Long Term Evolution) is a mechanism that prevents multiple terminals from accessing the network simultaneously in order to reduce the load on the network. (Access restrictions).

  First, ACB (Access Class Barring) includes a flag or restriction rate that prohibits access to the network in the broadcast information for notifying various information from the network to the terminal. It is an access control method that enables control with a certain probability. By using ACB, it is possible to regulate transmission from the terminal to the network. However, ACB cannot realize access restriction according to the type of service except for emergency calls (see Non-Patent Document 1, for example).

  Next, SSAC (Service Specific Access Control) notifies the restriction rate for each voice and video call of IMS (IP Multimedia Core Network Subsystem), thereby suppressing voice and video calls with a probability corresponding to the restriction rate. Is possible. With SSAC, it is possible to suppress access to a network that processes IMS and to reduce the load on the network (for example, see Non-Patent Document 1).

  Next, the Access Class for CSFB is a method that can regulate the transmission by the CSFB method with a probability corresponding to the restriction rate by notifying the restriction rate for the transmission by the CSFB (Circuit Switched fallback) method. CSFB is an LTE network that does not support a circuit switching system when a terminal in LTE uses a service provided by a circuit switching system (CS (Circuit Switched) domain) such as voice. Is a technology that enables voice transmission by transitioning a terminal to a UMTS (Universal Mobile Telecommunications System) or GSM (Registered Trademark, hereinafter omitted) (Global System for Mobile Communications) network that supports a circuit switching system . With Access Class for CSFB, access to a network that supports the circuit switching method can be suppressed, and the network load can be reduced (see, for example, Non-Patent Document 1).

  Next, ACDC (Application Specific Congestion Control for Data Communication) system is defined by 3GPP Release 13 (see, for example, Non-Patent Document 1). ACDC is an access control method that realizes access control in units of applications installed in a terminal, and allows communication of an application specified by broadcast information regardless of an access control method such as IMS or CSFB. Or the communication of the application specified by the notification information can be regulated with a certain probability.

  Specifically, information in which a specific application called an ACDC category is categorized inside the terminal is held. Then, the network notifies the terminal of the restriction rate associated with each ACDC category to the terminal using the broadcast information, and communicates only control by a specific application or communication by a specific application. It is possible to perform control such as

JP 2014-022986 A

3GPP TS 22.011 V13.1.0 (2014-09)

  For example, for a terminal such as a smartphone that can install various applications, it is desirable to finely regulate each application. In consideration of the load applied to the network, it is desirable to perform the restriction by an access restriction method that can prevent the terminal from accessing the network, rather than the restriction control method that discards the call in the core network.

  However, according to the conventional access control methods ACB, SSAC, and Access Class for CSFB, access control cannot be performed for each application installed in the terminal.

  On the other hand, ACDC can regulate access for each application. However, ACDC assumes that the ACDC category is determined by the operator's policy. Therefore, the unified ACDC category is not always set between the roaming-in terminal and the home operator terminal, and it is difficult for the home operator to understand what applications are subject to the regulation. There was a problem.

  Even if the terminal is provided by the home operator, if the setting policy of the ACDC category in the home operator is changed, the correspondence between the ACDC category held by each terminal and the application is not uniform. Therefore, there has been a problem that it is difficult to control in a unified manner what applications are subject to regulation.

  The disclosed technology has been made in view of the above, and when performing access control on a terminal capable of installing various applications, the access control is performed for each application based on an objective index. It aims at providing the technology that can do.

A terminal of the disclosed technology is a terminal that communicates with a network device and has one or more applications installed therein, and is used to define the one or more applications and the characteristics of each of the one or more applications. Storage means for storing the control information associated with the identifier, receiving means for receiving restriction information including restriction instructions for each of the plurality of identifiers from the network device, and the restriction information and the control information. And determining means for determining whether communication by the one or more applications is permitted or inhibited, and the restriction information is associated with each restriction instruction for each of the plurality of identifiers. Including a restriction rate, and the determination unit weights the restriction rate included in the restriction information received from the network device. Based on the control rate was weighted, and determines whether to also suppress allow communication by the one or more applications.

  According to the disclosed technology, it is possible to provide a technology capable of performing access restriction for each application based on an objective index when performing access restriction on a terminal capable of installing various applications. it can.

It is a figure which shows the whole structure of the mobile communication system which concerns on 1st embodiment. It is a figure which shows an example of a function structure of the terminal which concerns on 1st embodiment. It is a figure which shows an example of the function structure (modification) of the terminal which concerns on 1st embodiment. It is a figure which shows an example of the application list and regulation list | wrist which concern on 1st embodiment. It is a sequence diagram which shows an example of the process sequence between the function parts of the terminal which concerns on 1st embodiment. It is a figure explaining an example of the process sequence (modification) between the function parts of the terminal which concerns on 1st embodiment. It is a flowchart which shows an example of the process sequence of the determination part which concerns on 1st embodiment. It is a figure which shows an example of the regulation information contained in alerting | reporting information. It is a flowchart which shows an example of the process sequence (modification) of the determination part which concerns on 1st embodiment. It is a figure which shows an example of the regulation information (modification) contained in alerting | reporting information. It is a figure which shows an example of the process sequence of the communication system which concerns on 1st embodiment. It is a figure which shows an example of a function structure of the terminal which concerns on 2nd embodiment. It is a figure which shows an example of the function structure (modification) of the terminal which concerns on 2nd embodiment. It is a figure which shows an example of the application list which concerns on 2nd embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description may be omitted. The embodiment described below is only an example, and the embodiment to which the present invention is applied is not limited to the following embodiment. For example, the base station apparatus and terminal described below are assumed to use a GSM, 3G, or LTE radio technology, but the present invention is a base station apparatus and terminal that uses a radio technology other than GSM, 3G, or LTE. It can also be applied to. In the following description, access restriction is simply referred to as “regulation”.

[First embodiment]
<Overview>
FIG. 1 is a diagram showing an overall configuration of a mobile communication system according to the first embodiment. The mobile communication system according to the first embodiment is a mobile communication system including a terminal, a network device, and a server. Although one terminal and one server are shown in FIG. 1, this is for convenience of illustration. That is, the mobile communication system according to the first embodiment may include a plurality of terminals or servers.

  The terminal has a function of communicating with a network device and a server through wireless communication. The terminal is, for example, a mobile phone, a smartphone, a tablet, a mobile router, or a wearable terminal. The terminal may be any terminal as long as it has a communication function. The terminal is configured by hardware resources such as a CPU such as a processor, a memory device such as a ROM, a RAM, or a flash memory, an antenna for communicating with the base station eNB, and an RF (Radio Frequency) device. Each function and process of the terminal may be realized by a processor processing or executing data or a program stored in the memory device. However, the terminal is not limited to the hardware configuration described above, and may have any other appropriate hardware configuration.

  The network device is a mobile communication network provided by a mobile communication provider, and includes a wireless network device and a core network device. In addition, the network device has a function of communicating with a terminal through wireless communication.

  The server is connected to the network device. The server communicates with an application installed in the terminal via the network device, and provides various functions to the user in cooperation with the application. For example, a different server may be connected to the network device for each application.

  The mobile communication system according to the first embodiment includes restriction information for restricting an application in broadcast information used for notifying various information from a network device to all terminals in a cell. In addition, a list (hereinafter referred to as “application list”) that prescribes the characteristics of each application installed in the terminal is held in advance in the terminal. In addition, the terminal that has received the notification information including the restriction information compares the received restriction information with the application list, and generates and stores information indicating which application is the restriction target.

  When an application installed in the terminal tries to start communication, the terminal refers to information indicating which application is regulated, and whether or not the application trying to start communication is regulated Confirm. When the application is subject to restriction, the terminal suppresses communication of the application according to the restriction rate included in the restriction information.

<Functional configuration>
FIG. 2 is a diagram illustrating an example of a functional configuration of the terminal according to the first embodiment. The terminal according to the first embodiment includes a radio signal processing unit 10, a modem 11, an OS 12 (Operating System), and an application 13. The modem 11 includes a communication control unit 14 and a notification information reading unit 15. The communication control unit 14 includes a determination unit 16, an application list storage unit 17, and a suppression unit 18. Note that the suppression unit 18 is not necessarily included in the communication control unit 14, and may be included in any one of the OS 12, the application 13, or the communication control unit 14. Note that FIG. 2 shows only functional units that are particularly related to the embodiment of the present invention in the terminal, and includes a function (not shown) for performing an operation based on at least GSM, 3G, or LTE. The functional configuration shown in FIG. 2 is only an example. As long as the operation according to the present embodiment can be performed, the function classification and the name of the function unit may be anything.

  The wireless signal processing unit 10 transmits and receives wireless signals to and from the network device. The modem 11 performs processing for extracting data from a radio signal, processing for converting data into a radio signal, and processing related to call control.

  The OS 12 is basic software of the terminal, and performs hardware control of the terminal, provision of a basic GUI (Graphical User Interface) for the user, provision of an execution base for the application 13, and the like.

  The application 13 operates on the OS 12 of the terminal and provides various functions to the user. The application 13 includes an application 13 preinstalled in the terminal or an application 13 that can be arbitrarily installed by the user. In the present embodiment, either application 13 may be included. A plurality of applications 13 may be installed in the terminal. There is no limit to the number of applications 13 that can be installed in the terminal.

  The communication control unit 14 establishes a communication bearer with the network device, and relays a signal transmitted / received by the application 13 to / from the network device or server via the established communication bearer.

  The broadcast information reading unit 15 reads the broadcast information included in the wireless control channel transmitted from the network device. When the broadcast information includes restriction information, the broadcast information reading unit 15 notifies the determination unit 16 of the read restriction information. . Further, when the restriction information included in the notice information is changed, the notice information reading unit 15 notifies the determination unit 16 of the changed restriction information.

  When the restriction information is notified from the notification information reading unit 15, the determination unit 16 compares the application list with the restriction information to calculate the restriction rate to be applied for each application 13, and for each calculated application 13. A restriction list is generated from the restriction rate and notified to the deterring unit 18.

  Note that the determination unit 16 may generate a separate restriction list for each application 13 and notify the suppression unit 18 when each application 13 includes the suppression unit 18.

  The application list storage unit 17 stores the application list using a RAM, a ROM, or the like.

  When the application 13 attempts to start communication, the suppression unit 18 confirms whether the application 13 is included in the restriction list notified from the determination unit 16. When the application is included in the restriction list, the suppression unit 18 further determines whether to permit communication of the application 13 based on the restriction rate applied to the application 13. When communication is not permitted, the suppression unit 18 suppresses communication of the application 13 (rejects communication). Note that when the communication of the application 13 is suppressed, the suppression unit 18 may notify the application 13 of an error message indicating that communication is suppressed (communication is rejected).

  It can be assumed that the application 13 is already communicating when it is determined that the communication of the application 13 is not permitted. In this case, the suppression unit 18 may cause the application 13 to stop communication. In addition, when the suppression unit 18 causes the application 13 to stop communication, the suppression unit 18 may notify the application 13 of an error message indicating that communication is to be stopped.

  FIG. 3 is a diagram illustrating an example of a functional configuration (modification) of the terminal according to the first embodiment. In the example of the functional configuration (modified example) illustrated in FIG. 3, the OS 12 includes a determination unit 16, an application list storage unit 17, and a suppression unit 18. Since the function of each functional unit is the same as that in FIG.

  FIG. 4 is a diagram illustrating an example of an application list and a restriction list according to the first embodiment. The application list shown in FIG. 4A includes an application identifier for uniquely identifying the application 13, a priority identifier, a QCI (QoS (Quality of Service) Class Identifier) identifier, a service type identifier, and a DL (Downlink). -A GBR (Guaranteed Bit Rate) is held for each application 13 installed in the terminal.

  The priority identifier is an identifier indicating the priority of the application 13. For example, the priority may be determined by an operator according to a predetermined rule, or may be determined by a user according to a predetermined rule. Further, the priority may be determined based on the usage frequency or usage record of the application 13. In this case, the priority between the applications 13 may be changed as appropriate depending on the usage frequency and usage record of the applications 13. The priority is preferably set so as not to overlap between the applications 13, but does not necessarily need to be set so as not to overlap, and different applications 13 may be assigned the same priority identifier. .

  The QCI identifier is an identifier indicating the QCI of the communication bearer established between the terminal and the network device when the application 13 communicates. According to the 3GPP specifications, a plurality of QCIs are defined as QoS classes set in communication bearers. Among the plurality of QCIs, for 1 to 9 QCIs, services to be assigned are determined in advance.

  For example, it is stipulated that QCI = “1” is set in the communication bearer for carrying the U-plane signal of the voice communication service using IMS, and the communication bearer for carrying the IMS signaling signal is specified. Is defined that QCI = “5” is set. Similarly, it is stipulated that QCI = “7”, “8”, or “9” is set in a communication bearer for carrying a U-plane signal for services such as browsing and electronic mail.

  The QCI identifier may be assigned according to the 3GPP specification described above, or may be assigned based on the QCI actually set in the communication bearer when each application 13 communicates in the past. . For example, in the case of the application 13 performing voice communication using IMS, “1” and “5” may be assigned to the QCI identifier, and in the case of the browser application 13, “7” is assigned to the QCI identifier. "8" or "9" may be assigned.

  In the current 3GPP rules, services are assigned to 1 to 9 QCIs, but the 3GPP rules may be expanded in the future. Accordingly, a QCI identifier assigned to the application 13 may be assigned a QCI other than 1 to 9 in accordance with the 3GPP regulations that will be expanded in the future.

  The service type identifier is an identifier indicating a service type provided by each application 13. For the service type, for example, categories such as VoIP, live streaming (video call), buffer streaming, real-time game, interactive game, web browsing, e-mail, or file transfer, which are categories for each QCI, may be used. Alternatively, categories such as communication, entertainment, music, and news may be used as defined in the Android (registered trademark) application 13 in advance. Further, instead of detailed classification, it may be simply indicated whether or not IMS is used.

  DL-GBR is an identifier indicating a communication band required by the application 13. For example, the application 13 in which DL-GBR is set to 900 kbps means that at least 900 kbps is required for downlink communication.

  The DL-GBR may be determined based on the operation specification of the application 13 or may be determined based on the value of the GBR actually set in the communication bearer when each application 13 communicated in the past. You may make it do.

  The restriction list shown in FIG. 4B has an application identifier and a restriction rate, and the application identifier and the restriction rate are associated with each other on a one-to-one basis. The restriction rate indicates the restriction rate of access restriction applied to the application 13 identified by the application identifier. Note that the regulation rate of 10% indicates that, for example, when the application 13 attempts to start communication, communication is rejected once in 10 times. The restriction rate of 50% indicates that, for example, when the application 13 tries to start communication, the communication is rejected once in two times. The regulation rate of 80% indicates that, for example, when the application 13 tries to start communication, communication is rejected with 8 establishments in 10 times.

<Processing procedure>
(Processing procedure between functional parts)
1. When the determination unit is included in the communication control unit FIG. 5 is a sequence diagram illustrating an example of a processing procedure between functional units of the terminal according to the first embodiment. The functional configuration shown in FIG. 5 is a configuration in which the determination unit 16 is included in the communication control unit 14 and is the same as the functional configuration in FIG.

1.1 When the Suppression Unit is Included in the Communication Control Unit FIG. 5A shows a processing procedure between functional units when the suppression unit 18 is included in the communication control unit 14. When the notification information reading unit 15 receives the notification information including the restriction information from the network device, the notification information reading unit 15 notifies the determination unit 16 of the communication control unit 14 of the received restriction information (S21). Subsequently, the determination unit 16 generates a restriction list by comparing the restriction information with the application list, and notifies the inhibition part 18 of the generated restriction list (S22).

  Next, a communication start request is transmitted from the application 13 to the OS 12 (S23). Subsequently, the OS 12 transmits a communication start request including the application identifier to the suppression unit 18 (S24). Subsequently, the suppression unit 18 determines whether or not the application identifier included in the communication start request is included in the restriction list notified in step S22 (S25). When the application identifier is included in the restriction list, it is determined that the request is a communication start request from the application 13 to which the restriction is to be applied, and it is determined whether communication is permitted according to the restriction rate. If it is determined that communication is not permitted, the suppression unit 18 notifies the application 13 of an error without transmitting a communication bearer establishment request to the communication control unit 14. For example, when the regulation rate is 80%, the suppression unit 18 does not transmit a communication bearer establishment request with a probability of 80% (that is, transmits a communication bearer establishment request with a probability of 20%). For example, when the regulation rate is 100%, the suppression unit 18 does not transmit a communication bearer establishment request.

  If it is determined that communication is permitted, the suppression unit 18 transmits a communication bearer establishment request to the communication control unit 14 (S26). The communication control unit 14 transmits a communication bearer establishment request to the network device (S27), and relays a signal transmitted / received by the application 13 to / from the network device or server via the established communication bearer. If a communication bearer has already been established, the communication control unit 14 may use an already established communication bearer. Further, for example, when only the radio bearer is released by the preservation function, the communication control unit 14 may establish only the radio bearer.

1.2 When the Suppression Unit is Included in the OS FIG. 5B shows a processing procedure between functional units when the suppression unit 18 is included in the OS 12. Since the processing procedures in steps S31 to S37 are the same as those in steps S21 to S27, respectively, description thereof will be omitted.

1.3 When the Suppression Unit is Included in the Application FIG. 5C shows a processing procedure between the functional units when the suppression unit 18 is included in the application 13. When the notification information reading unit 15 receives the notification information including the restriction information from the network device, the notification information reading unit 15 notifies the determination unit 16 of the communication control unit 14 of the received restriction information (S41). Subsequently, the determination unit 16 generates a restriction list by comparing the restriction information with the application list, and includes only the restriction rate corresponding to the application 13 in which the inhibition unit 18 is included for each of the inhibition units 18. A restriction rate or a restriction rate corresponding to the application 13 including the suppression unit 18 is notified (S42).

  Next, a communication start request is transmitted from the application 13 to the suppression unit 18 (S43). Subsequently, when the suppression unit 18 receives the communication start request (S44), the suppression unit 18 determines whether to permit communication according to the restriction rate notified in step S42. When determining that communication is not permitted, the suppression unit 18 does not transmit a communication bearer establishment request to the OS 12. For example, when the regulation rate is 80%, the suppression unit 18 does not transmit a communication bearer establishment request with a probability of 80% (that is, transmits a communication bearer establishment request with a probability of 20%). For example, when the regulation rate is 100%, the suppression unit 18 does not transmit a communication bearer establishment request. In this case, the application 13 may display a warning such as a transmission failure on the terminal screen.

  When determining that the communication is permitted, the suppression unit 18 transmits a communication bearer establishment request to the OS 12 (S45). Subsequently, the OS 12 transmits a communication bearer establishment request to the communication control unit 14 (S46). The communication control unit 14 transmits a communication bearer establishment request to the network device (S47), and relays a signal transmitted / received by the application 13 to / from the network device or server via the established communication bearer. If a communication bearer has already been established, the communication control unit 14 may use an already established communication bearer. Further, for example, when only the radio bearer is released by the preservation function, the communication control unit 14 may establish only the radio bearer.

2. When the Determination Unit is Included in the OS FIG. 6 is a sequence diagram illustrating an example of a processing procedure (modified example) between functional units of the terminal according to the first embodiment. 6 is a configuration in which the determination unit 16 is included in the OS 12, and is the same as the functional configuration in FIG.

2.1 When the Suppression Unit is Included in the OS FIG. 6A shows a processing procedure between functional units when the suppression unit 18 is included in the OS 12. Since the processing procedure from step S51 to step S57 is the same as the processing procedure from step S21 to step S27, description thereof will be omitted.

2.2 When Deterrence Unit is Included in Application FIG. 6B shows a processing procedure between functional units when the deterrence unit 18 is included in the application 13. Since the processing procedure from step S61 to step S67 is the same as the processing procedure from step S41 to step S47, respectively, description thereof will be omitted.

  The processing order between the functional units of the terminal according to the first embodiment has been described above. Note that the processing order described above is merely an example, and processing may be performed using another processing order.

(Processing procedure of judgment unit)
FIG. 7 is a flowchart illustrating an example of a processing procedure of the determination unit according to the first embodiment. The process in which the determination unit 16 generates the restriction list will be described with reference to FIG.

  In step S <b> 101, the determination unit 16 receives notification of restriction information from the notification information reading unit 15. The restriction information includes a plurality of parameters (priority identifier, QCI identifier, service type identifier, DL-GBR) and restriction rates for the respective parameters.

  Here, a specific example of the regulation information will be described.

  FIG. 8 is a diagram illustrating an example of restriction information included in the notification information. In the restriction information shown in FIG. 8, the application 13 having the priority identifier “3” or higher is not applicable, and the restriction rate aa% is applied to the application 13 having the priority identifier less than “3”. Is shown. In addition, the restriction rate bb% is applied to the application 13 whose QCI identifier is “1” or “2”, and the application 13 that is the other QCI identifier is not applicable. Further, the restriction rate cc% is applied to the application 13 whose service type is “IMS”, and the application 13 which is the other service type identifier is not applicable. Further, the regulation rate dd% is applied to the application 13 whose DL-GBR is “500 kbps or higher”, and the application 13 whose DL-GBR is “less than 500 kbps” is not applicable. Returning to FIG.

  In step S <b> 102, the determination unit 16 acquires an application list from the application list storage unit 17.

  In step S103, the determination unit 16 selects any one record from the acquired application list.

  In step S104, the determination unit 16 compares each parameter (priority identifier, QCI identifier, service type identifier, DL-GBR) included in the selected record with each parameter included in the restriction information, Check the number of parameters that correspond to the regulatory information.

  When only a single parameter corresponds to the restriction information, the process proceeds to step S105. When a plurality of parameters correspond to the restriction information, the process proceeds to step S106, and there is no parameter corresponding to the restriction information. Advances to the processing procedure of step S108.

  In step S105, the determination unit 16 extracts the restriction rate of the corresponding parameter from the restriction information, and stores the application identifier included in the record selected in step S103 and the extracted restriction rate in the restriction list. .

  In step S106, the determination unit 16 extracts the restriction rate of each of the corresponding parameters from the restriction information, and calculates the restriction rate according to a predetermined calculation method. Hereinafter, a predetermined calculation method will be described.

1. Selecting the highest restriction rate Among the restriction rates extracted from the restriction information, a method of selecting the highest restriction rate can be considered. For example, comparing the application A shown in FIG. 4A (the application 13 whose application identifier is “A”) with the restriction information shown in FIG. 8, the QCI restriction rate bb% It can be seen that the restriction rate cc% of the identifier is applied. In this case, the determination unit selects a value with a large restriction rate from bb% and cc%.

2. Applying the restriction rate redundantly A method of applying the restriction rate extracted from the restriction information in duplicate is conceivable. For example, when the QCI restriction rate bb% and the service identifier restriction rate cc% are applied to the application A, it is first determined whether the restriction target is to be restricted using the restriction rate bb%. When it is determined, it is a method of further determining whether or not to be regulated using the regulation rate cc%, and if it is judged that it is not yet regulated, it is a method of not making it regulated. In this case, the regulation rate to be applied can be calculated using a calculation formula of 100 − ((100−bb%) × (100−cc%)).

  Even when three parameters correspond to the restriction information and when four parameters correspond to the restriction information, the restriction rate can be calculated by the same method.

3. Calculation of average value There is a method of using the average value of the restriction rate extracted from the restriction information as the restriction rate.
For example, when the QCI restriction rate bb% and the service identifier restriction rate cc% are applied to the application A, the average value of bb% and cc% is calculated as the restriction rate.

4). Weighting each restriction rate and calculating the restriction rate When applying the restriction rate extracted from the restriction information in duplicate. Instead of the calculation method described above, a method of calculating the restriction rate after weighting each restriction rate is conceivable.
For example, when the QCI restriction rate bb% and the service identifier restriction rate cc% are applied to the application A, it is first determined whether the restriction target is to be restricted using the restriction rate bb%. If it is determined, it is determined whether it is subject to regulation using the regulation rate cc × x% obtained by multiplying the regulation rate cc% by the weighting coefficient (x). It is a method to avoid. In this case, the regulation rate to be applied can be calculated using a calculation formula of 100 − ((100−bb%) × (100−cc × x%)). As the weighting coefficient, a different coefficient (x, y, z) may be applied for each parameter. For example, when three parameters correspond to the regulation information, a calculation formula of 100 − ((100−bb%) × (100−cc × x%) × (100−dd × y%)) is used. When four parameters correspond to the regulation information, 100 − ((100−aa%) × (100−bb × x%) × (100−cc × y%) × (100−dd × z%)) A calculation formula may be used.

  A specific example when the three parameters correspond to the restriction information will be described. For example, when a QCI regulation rate of 60%, a service identifier regulation rate of 60%, and a DL-GBR regulation rate of 60% are applied, and the weighting factor x is 1/3 and y is 1/6, the regulation rate is , 100− (100−60%) × (100−20%) × (100−10%) = about 71%.

  On the other hand, without weighting, 2. When the regulation rate is calculated by the calculation method shown in FIG. 4, 100− (100−60%) × (100−60%) × (100−60%) = about 94%. That is, by applying weights to each restriction rate, the restriction rate to be applied is relaxed as compared to the case where the restriction rate is simply applied in an overlapping manner.

  Note that the method of weighting each restriction rate is not limited to the above, and various methods are conceivable. For example, weighting may be performed on all restriction rates, or weighting may be performed only on the restriction rates related to arbitrary parameters. Further, weighting may be performed only when the regulation rate is equal to or higher than a predetermined threshold. In addition, information indicating weighting may be included in the broadcast information, and weighting may be performed based on the information.

  In step S107, the determination unit 16 stores the application identifier included in the record selected in step S103 and the restriction rate calculated in step S106 in association with each other in the restriction list.

  In step S108, the determination unit 16 confirms whether or not the processing procedure of steps S104 to S107 has been performed on all records included in the application list. If the processing procedure from step S104 to step S107 has been performed for all records, the process proceeds to the processing procedure in step S109. If the processing procedure from step S104 to step S107 has not been performed for all records, Returning to the processing procedure of step S103, the processing procedure of steps S104 to S107 is performed on the next record. That is, the processing procedure from step S104 to step S107 is performed for all records included in the application list.

  In step S109, the determination unit 16 notifies the restriction unit 18 of the restriction list generated by the processing procedure in steps S104 to S107. In addition, when the suppression unit 18 is included in the application 13, the determination unit 16 includes, for each suppression unit 18, a restriction list that includes only the restriction rate corresponding to the application 13 in which the suppression unit 18 is included, or the suppression unit. The restriction rate corresponding to the application 13 including 18 is transmitted.

(Processing procedure of determination unit (variation))
FIG. 9 is a flowchart illustrating an example of a processing procedure (modified example) of the determination unit according to the first embodiment. The process in which the determination unit 16 generates a restriction list will be described with reference to FIG.

  In step S <b> 201, the determination unit 16 receives notification of restriction information from the notification information reading unit 15. The restriction information in this modification includes a plurality of parameters (priority identifier, QCI identifier, service type identifier, DL-GBR) and a restriction rate.

  Here, a specific example of the restriction information in this modification will be described.

  FIG. 10 is a diagram illustrating an example of restriction information (modified example) included in the notification information. The restriction information shown in FIG. 10 indicates that the application 13 whose priority identifier is “3” or more is not applicable, and the restriction is applied to the application 13 whose priority identifier is less than “3”. Yes. Further, it is indicated that the restriction is applied to the application 13 whose QCI identifier is “1” or “2”, and the application 13 which is the other QCI identifier is not applicable. Further, the restriction is applied to the application 13 whose service type is “IMS”, and the application 13 which is the other service type identifier is not applicable. Further, the restriction is applied to the application 13 whose DL-GBR is “500 kbps or higher”, and the application 13 whose DL-GBR is “less than 500 kbps” is not applicable. The restriction rate indicates the restriction rate (ee%) when the restriction is applied. That is, unlike the restriction information in FIG. 8, the restriction information according to the present modification example does not designate a restriction rate for each parameter, but designates only one restriction rate as a whole. Returning to FIG.

  In step S <b> 202, the determination unit 16 acquires an application list from the application list storage unit 17.

  In step S203, the determination unit 16 selects any one record from the application list selected in step S102. Here, there are two possible methods for determining whether or not the restriction is applied to the application 13 selected in step S203. For example, only when it is determined that the restriction is applied to all the parameters included in the restriction information, at least one of the method (Pattern A) in which the restriction is performed and all the parameters included in the restriction information. This is a method (pattern B) in which the restriction is performed when it is determined that the restriction is applied to one parameter. In the case of pattern A, the processing procedure of step S204 and step S205 is performed, and in the case of pattern B, the processing procedure of step S206 and step S207 is performed. The determination unit 16 may determine, for example, which processing method to apply between the pattern A and the pattern B based on information instructed in advance from the network device, or may be stored in advance in the terminal. It may be determined which processing method of pattern A or pattern B is applied based on the instruction information.

  In step S204, the determination unit 16 determines each parameter (priority identifier, QCI identifier, service type identifier, DL-GBR) included in the record selected in step S203 and each parameter included in the restriction information. Compare and confirm whether it corresponds to all parameters included in the regulation information. If all parameters are applicable, the process proceeds to step S205. Otherwise, the process proceeds to step S208.

  In step S205, the determination unit 16 extracts the restriction rate from the restriction information, and stores the application identifier included in the record selected in step S203 and the extracted restriction rate in the restriction list.

  In step S206, the determination unit 16 determines each parameter (priority identifier, QCI identifier, service type identifier, DL-GBR) included in the record selected in step S203 and each parameter included in the restriction information. A comparison is made to check whether at least one of the parameters included in the restriction information is applicable. If at least one of the parameters is applicable, the process proceeds to step S207. Otherwise, the process proceeds to step S208.

  In step S207, the determination unit 16 extracts the restriction rate from the restriction information, and stores the application identifier included in the record selected in step S203 and the extracted restriction rate in the restriction list.

  In step S208, the determination unit 16 confirms whether or not the processing procedure in steps S204 to S207 has been performed on all records included in the application list. If the processing procedure from step S204 to step S207 has been performed on all records, the process proceeds to the processing procedure in step S209, and if the processing procedure from step S204 to step S207 has not been performed on all records. Returning to the processing procedure of step S203, the processing procedure of steps S204 to S207 is performed on the next record. That is, the processing procedure from step S204 to step S207 is performed for all records included in the application list.

  The processing procedure in step S209 is the same as the processing procedure in step S109 in FIG.

(Processing sequence)
FIG. 11 is a diagram illustrating an example of a processing sequence of the communication system according to the first embodiment. With reference to FIG. 11, a processing procedure (S301 to S306) when access restriction is performed according to an instruction from the network device and a processing procedure (S307 to S310) when access restriction is performed while the application 13 is communicating. explain.

  In step S301, for example, when the network device detects that the network device is in a high load state or receives an instruction from an operator, the network device includes notification information including restriction information. Is transmitted in the control channel.

  In step S302, the determination unit 16 of the terminal creates a restriction list based on the restriction information received in step S301 and the application list.

  In step S303, the arbitrary application 13 starts communication with the network device or the server.

  In step S304, the terminal deterrence unit 18 determines whether to allow communication of the application 13 based on the restriction rate included in the restriction list created in step S302. If communication is permitted, the process proceeds to step S305.

  In step S305, the communication control unit 14 of the terminal establishes a communication bearer with the network device, and relays a signal transmitted and received by the application 13 to and from the network device or server via the established communication bearer (S306). Note that when a communication bearer has already been established with the network device, the communication control unit 14 may use the already established communication bearer. Further, for example, when only the radio bearer is released by the preservation function, the communication control unit 14 may establish only the radio bearer.

  In step S307, for example, when the network device detects that the network device is in a high load state or receives an operator's instruction, the network device uses the broadcast information as a control channel. Include and send.

  Since the processing procedure of step S308 is the same as that of step S302, description thereof is omitted.

  If there is an application 13 in communication in step S309, the terminal deterrence unit 18 determines whether to stop communication of the application 13 based on the restriction rate included in the restriction list created in step S302. . When the communication is to be stopped, the process proceeds to step S310.

  In step S310, the terminal deterrence unit 18 deters communication performed between the application 13 and the network device. Note that the terminal suppression unit 18 may instruct the communicating application 13 to stop communication. Alternatively, the terminal deterrence unit 18 instructs the communication control unit 14 or the OS 12 to discard the communication data before the communication data from the application 13 is transmitted to the network device. May be.

  Note that the processing procedures of step S309 and step S310 are not necessarily performed. This is because it may be assumed that there is no need to restrict access to the application 13 already in communication.

<Effect>
As described above, in the communication system according to the first embodiment, the network device transmits the restriction information including a plurality of parameters to the terminal via the broadcast information, and the terminal defines the restriction information and the features for each application 13. By comparing with the list, it is possible to restrict access in units of 13 applications. By enabling the restriction using a plurality of parameters, the communication system according to the embodiment is subject to restriction compared to the case where the access restriction is performed based on a single parameter such as ACDC. It is possible to designate the application 13 based on an objective viewpoint.

  Further, the communication system according to the first embodiment can calculate the restriction rate after weighting each restriction rate when applying the restriction rates of a plurality of parameters in duplicate. I did it. As a result, the probability that the application 13 to which the restriction rates of a plurality of parameters are applied can communicate (the communication rate) does not become too low as compared with the application 13 to which only the restriction rates of a single parameter are applied. be able to. That is, the problem that the application 13 to which the restriction rates of a plurality of parameters are applied is treated more disadvantageously than the application 13 to which only the restriction rate of a single parameter is applied (the probability that communication is possible becomes very low) is prevented. Can do.

  In addition, the communication system according to the first embodiment makes it possible to suppress communication of the application 13 even when access restriction is performed when the application 13 is communicating. Thus, the communication system according to the embodiment can efficiently suppress the load on the network device when the network device has a high load.

[Second Embodiment]
Next, a second embodiment will be described based on the drawings.

  The description of the same components as those in the first embodiment is omitted. Also, points not particularly mentioned may be the same as those in the first embodiment.

<Overview>
The communication system according to the second embodiment holds a plurality of application lists associated with a plurality of contract types, and selects an application list used for restriction determination based on a restriction type of the user. Like that.

<Functional configuration>
FIG. 12 is a diagram illustrating an example of a functional configuration of the terminal according to the second embodiment. The terminal according to the second embodiment includes a radio signal processing unit 10, a modem 11, an OS 12 (Operating System), an application 13, and a USIM 21 (Universal Subscriber Identity Module) card. The modem 11 includes a communication control unit 24 and a notification information reading unit 15. Further, the communication control unit 24 includes an application list storage unit 17, a suppression unit 18, and a determination unit 26. The USIM 21 includes a contract information storage unit 22. Note that the suppression unit 18 is not necessarily included in the communication control unit 24, and may be included in any one of the OS 12, the application 13, or the communication control unit 24. Note that FIG. 12 shows only functional units particularly related to the embodiment of the present invention in the terminal, and includes a function (not shown) for performing an operation based on at least GSM, 3G, or LTE. Further, the functional configuration shown in FIG. 12 is merely an example. As long as the operation according to the present embodiment can be performed, the function classification and the name of the function unit may be anything.

  The contract information storage unit 22 is realized using, for example, a storage area in the USIM 21 and stores contract information. Here, the contract information is the contract type of the user associated with the USIM 21. The contract type may be, for example, a general contract, a corporate contract, or a contract according to the usage pattern such as a contract for children, or a contract according to a charge plan such as unlimited call plan A or unlimited packet communication plan B. Type, contract for general terminals, contract for MTC (Machine Type Communication), or the like may be used. One of these contract types is set in the contract information.

  Note that the contract information storage unit 22 may be realized using a memory in the terminal, a memory included in the modem, or the like instead of the USIM 21.

  When the change of the contract type is notified by OTA (Over The Air) from the network device, the communication control unit 24 updates the contract information stored in the contract information storage unit 22 with the notified contract type. Further, the communication control unit 24 receives the contract type from the network device at the timing of performing the attach process or the location registration process, for example, instead of the OTA, and the received contract type is stored in the contract information storage unit 22. You may make it store in information.

  The determination unit 26 compares the application list with the contract type set in the contract information, and specifies the application list used for determination of regulation. Moreover, the determination part 26 performs the same process as the determination part 16 which concerns on 1st embodiment using the identified application list.

  FIG. 13 is a diagram illustrating an example of a functional configuration (modification) of the terminal according to the second embodiment. In the example of the functional configuration (modified example) illustrated in FIG. 13, the OS 12 includes a determination unit 26, an application list storage unit 17, and a suppression unit 18. Since the operation performed by each functional unit is the same as in FIG. 12, the description thereof is omitted.

  FIG. 14 is a diagram illustrating an example of an application list according to the second embodiment. As shown in FIG. 14, the application list according to the second embodiment includes a plurality of application lists associated with each contract type.

<Processing procedure>
The determination unit 26 according to the second embodiment performs restriction determination using an application list corresponding to the contract type set in the contract information. For example, when “contract type A” is set in the contract information, the determination unit 26 performs restriction determination using an application list that is contract type A in the application list. Similarly, when the contract type set in the contract information is “contract type D”, the determination unit 26 performs restriction determination using the application list that is the contract type D in the application list. Since other processing procedures are the same as those in the first embodiment, the description thereof is omitted.

<Effect>
As described above, the communication system according to the second embodiment holds a plurality of application lists associated with a plurality of contract types, and uses the application list used for restriction determination based on the restriction types of users. It was made to choose. Thereby, the communication system according to the second embodiment can perform appropriate access restriction according to the contract type of the user.

  As described above, the communication system according to the second embodiment updates the contract information stored in the contract information storage unit 22 using, for example, OTA, or performs the attach process or the position registration process. Enabled reception from network devices. Thereby, the communication system according to the second embodiment can perform appropriate access regulation according to the user's contract type even when the user's contract type is changed.

<Supplement of embodiment>
As described above, the application lists according to the first embodiment and the second embodiment include the priority identifier, the QCI (QoS (Quality of Service) Class, and the parameters used to define the characteristics of the application 13 as parameters. (Identifier) identifier, service type identifier, and DL-GBR are held, but other parameters can also be held. For example, parameters such as UL (Uplink) -GBR and MBR (Maximum Bit Rate) may be further retained.

  As described above, in the second embodiment, when the processing procedure of step S106 in FIG. 7 is performed, different weighting factors may be used depending on the contract type. Further, in the processing procedure of S105 (when corresponding to a single parameter), a weighting coefficient corresponding to the contract type is determined in advance, and a restriction rate obtained by multiplying the weighting coefficient corresponding to the contract type is applied. Also good.

  Although the embodiments of the present invention have been described above, the disclosed invention is not limited to the embodiments, and those skilled in the art will understand various variations, modifications, alternatives, substitutions, and the like. . Although specific numerical values have been used to facilitate understanding of the invention, these numerical values are merely examples, and any appropriate values may be used unless otherwise specified. The classification of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, or the items described in one item may be used in different items. It may be applied to the matters described in (if not inconsistent). The boundaries between functional units or processing units in the functional configuration diagram do not necessarily correspond to physical component boundaries. The operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.

  As described above, all or part of the embodiments can be implemented by a program. This program can be stored in random access memory (RAM), flash memory, read only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium. It may be saved.

  In each embodiment, the parameter of restriction information included in the notification information is an example of a restriction instruction. The communication control unit 14, the notification information reading unit 15, or the communication control unit 24 is an example of a receiving unit. The application list is an example of control information. The priority identifier, QCI identifier, service type identifier, and DL-GBR are examples of identifiers. The determination unit 16 or the determination unit 26 is an example of a determination unit. The application list storage unit 17 or the contract information storage unit 22 is an example of a storage unit. The suppression unit 18 is an example of a communication control unit.

10 wireless signal processing unit 11 modem 12 OS
13 Application 14 Communication Control Unit 15 Notification Information Reading Unit 16 Determination Unit 17 Application List Storage Unit 18 Suppression Unit 21 USIM
22 contract information storage unit 24 communication control unit 26 determination unit

Claims (7)

A terminal that communicates with a network device and has one or more applications installed;
Storage means for storing control information in which the one or more applications are associated with a plurality of identifiers used to define the characteristics of each of the one or more applications;
Receiving means for receiving restriction information including restriction instructions for each of the plurality of identifiers from the network device;
A determination means for determining whether to permit or inhibit communication by the one or more applications based on the restriction information and the control information;
Have
The restriction information includes a restriction rate associated with each restriction instruction for each of the plurality of identifiers,
The determination unit weights the restriction rate included in the restriction information received from the network device, and permits communication by the one or more applications based on the weighted restriction rate. A terminal that determines whether to suppress . The determination means compares the control information with the restriction information, and when the plurality of identifiers correspond to at least two restriction instructions among restriction instructions for each of the plurality of identifiers, The terminal according to claim 1 , wherein each of the restriction rates corresponding to the restriction instructions is weighted at a different rate. Further comprising communication control means for controlling the communication based on the determination by the determination means;
Said communication control means, said application is a case in communication, when the determination unit makes a determination that suppresses the communication is controlled so as to suppress communication by the application, according to claim 1 or 2 The terminal described in. The storage means stores the contract type of the terminal and the control information associated with each of a plurality of contract types,
The determination means, based on the control information corresponding to the contract type of the terminal, and determines whether to also suppress allow communication by the one or more applications, any one of claims 1 to 3 The terminal described in. The receiving unit receives an instruction to change the contract type of the terminal from the network device, and updates the contract type of the terminal stored in the storage unit to the received contract information of the terminal; The terminal according to claim 4 . A terminal that communicates with a network device and has one or more applications installed;
Storage means for storing control information in which the one or more applications are associated with a plurality of identifiers used to define the characteristics of each of the one or more applications;
Receiving means for receiving restriction information including restriction instructions for each of the plurality of identifiers from the network device;
A determination means for determining whether to permit or inhibit communication by the one or more applications based on the restriction information and the control information;
Communication control means for controlling the communication based on the determination by the determination means;
Have
Said communication control means, said application is a case in communication, when the determination unit makes a determination that suppresses the communication terminal where the control to suppress communication by the application. A communication restriction method executed by a terminal that communicates with a network device and has one or more applications installed therein,
A storage step of storing, in a storage unit, control information in which the one or more applications and a plurality of identifiers used for defining the characteristics of each of the one or more applications are associated;
Receiving from the network device, restriction information including restriction instructions for each of the plurality of identifiers;
A determination step of determining whether to permit or inhibit communication by the one or more applications based on the restriction information and the control information;
Have
The restriction information includes a restriction rate associated with each restriction instruction for each of the plurality of identifiers,
The determination step weights the restriction rate included in the restriction information received from the network device, and permits communication by the one or more applications based on the weighted restriction rate. A communication restriction method that includes the determination of whether to suppress .

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