WO2025041296A1 - Communication control system, communication control device, communication control method, and program - Google Patents

Abstract

In order to enable flexible control of connection to a communication network of a communication terminal even when communication terminals having different request requirements for communication quality are mixed in a mobile network, this communication control system controls connection of a communication terminal to a communication network in a mobile network, wherein the communication control system has: an identification unit that identifies the type of the communication terminal or a service on the basis of a connection request from the communication terminal to the communication network; a determination unit that collects metrics pertaining to the communication control system and determines an abnormality of the communication control system on the basis of the collected metrics; and a message queue that, on the basis of the identification result produced by the identification unit and the determination result produced by the determination unit, controls the signal quantity of communication performed by the communication terminal.

Description

COMMUNICATION CONTROL SYSTEM, COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD, AND PROGRAM

The present invention relates to a communication control system, a communication control device, a communication control method, and a program.

In mobile networks, there is a communication control method for solving the problem of communication terminals connecting to the communication network due to an increase in the amount of signals. For example, a technology is known that sets priority/non-priority for signal transmission from an M2M (Machine to Machine) terminal during congestion, and probabilistically sets the timing of signal transmission depending on whether it is priority or non-priority (for example, see Non-Patent Document 1).

Sasada Keisuke, Tanaka Izuma, Koshimizu Kei, "M2M Communication Core Network Infrastructure and Congestion Countermeasures Technology", NTT Docomo Technical Journal Back Issue / VOL.21 NO.2, < https://www.docomo.ne.jp/binary/pdf/corporate/technology/rd/technical_journal/bn/vol21_2/vol21_2_030jp.pdf>, Internet, [Retrieved August 1, 2023]

The technology disclosed in Non-Patent Document 1 assumes that services have priorities, and implements control to uniformly delay the timing of calls made to low-priority services and connection requests from terminals.

However, this method does not allow for flexible control when, for example, mission-critical services with extremely high requirements for communication quality arise in addition to the use of general applications such as web browsing. Conversely, this method also has the problem of being unable to provide flexible control when a situation arises in which devices with low requirements for communication quality are mixed, such as with the Internet of Things (IoT).

One embodiment of the present invention has been made in consideration of the above problems, and enables flexible control of the connection of communication terminals to the communication network even when communication terminals with different requirements for communication quality are mixed in a mobile network.

In order to solve the above problems, a communication control system according to one embodiment of the present invention is a communication control system that controls the connection of a communication terminal to a communication network in a mobile network, and includes a discrimination unit that discriminates the type of the communication terminal and/or service in response to a connection request from the communication terminal to the communication network, a determination unit that collects metrics of the communication control system and determines an abnormality in the communication control system based on the collected metrics, and a message queue that controls the amount of signals in communication by the communication terminal based on the determination result by the discrimination unit and the determination result by the determination unit.

According to one embodiment of the present invention, even when communication terminals with different requirements for communication quality are mixed in a mobile network, it becomes possible to flexibly control the connection of the communication terminals to the communication network.

1 is a diagram for explaining a configuration example of a communication control system according to an embodiment of the present invention; FIG. 4 is a sequence diagram showing an example of processing of the communication control system according to the embodiment. 5 is a flowchart illustrating an example of processing of the communication control system according to the present embodiment. FIG. 2 is a diagram illustrating an example of a hardware configuration of a computer according to the present embodiment.

Below, an embodiment of the present invention (the present embodiment) will be described with reference to the drawings. The embodiment described below is merely an example, and the embodiment to which the present invention is applicable is not limited to the following embodiment.

<Communication control system configuration>
1 is a diagram for explaining a configuration example of a communication control system according to the present embodiment. This diagram shows a configuration example in the case where the communication control system 1 is a core network of a 5G (5th Generation) mobile network (hereinafter referred to as a 5G core network). The 5G core network is an example of a communication control system 1 that controls connection of a UE (communication terminal) 21 to a DN (communication network) 24 in a 5G mobile network.

The communication control system 1 includes a control plane (C-Plane) 10, a UE 21, a RAN 22, a UPF 23, and a DB 24, which perform a series of control processes exchanged to establish communication and perform authentication, etc.

The control plane 10 includes multiple network functions (NFs), such as, for example, AMF 11, SMF 12, AUSF 13, NSSAAF 14, NEF 15, NRF 16, UDM 17, and PCF.

AMF (Access and Mobility Management Function) 11 is a network function that is accessed first by UE 21, and performs, for example, access authentication, authorization, and mobility management. SMF (Session Management Function) 12 is a network function that functions following AMF 11, and performs, for example, session management. AUSF (Authentication Server Function) 13 is a network function for subscriber authentication. NSSAAF (Network Slice Specific Authentication and Authorization Function) 14 is a network function that performs network slice authentication and authorization. NEF (Network Exposure Function) 15 is a network function that exposes the services of each network function.

The NRF (Network Repository Function) 16 is a network function that registers the services of each network function. The UDM (Unified Data Management) 17 is a network function that performs integrated data management. The PCF (Policy Control Function) 18 is a network function that performs policy control.

The above network functions (NFs) can share services with each other via a unified interface called SBI (Service Based Interface). Note that the services provided by the above network functions can be the same as those provided by a general 5G core network, so a detailed explanation will be omitted here.

Each of the above network functions is realized, for example, by a server that executes a specific program, or a container. Here, a container is a program execution environment in which a part of a running OS (Operating System) is separated and isolated from the rest in container-type virtualization, which is one method of computer virtualization. In a container, a program can be executed as if it were an individual, independent server. For example, each of the network functions shown in Figure 1 may be realized by a server, or by a container on one or more communication control devices.

The communication control system 1 according to this embodiment also includes a discrimination unit 101, a determination unit 102, and a message queue 103.

The discrimination unit 101 is realized, for example, by a program executed by a server or a container, and executes discrimination processing to discriminate the type of UE 21 and/or service in response to a connection request from UE (communication terminal) 21 to DN (communication network) 24, etc.

The discrimination unit 101 prestores information such as the IP address, MAC address, or SUPI (Subscription Permanent Identifier) of the UE 21 in order to discriminate the UE 21 or the service type. In addition, the discrimination unit 101 discriminates the type of the UE 21, the type of the service, or the type of the UE 21 and the service type for an arriving signal, for example, when the UE 21 is connected.

The discrimination unit 101 can also look at, for example, the N1 signal element (non-encrypted parts such as Message Type and Registration Type) to identify whether the call is a general call or a priority call, and prioritize the processing of priority calls.

The determination unit 102 is realized, for example, by a program executed by a server or a container, and collects metrics (indicators) of the communication control system 1 and determines abnormalities, etc., of the communication control system 1 based on the collected metrics.

The metrics collected by the determination unit 102 include service metrics such as the number of mobile terminals in the control plane 10, the number of PDU sessions, and the number of authentication registration requests. The metrics collected by the determination unit 102 also include metrics for the server or container, such as CPU usage, memory usage, or disk I/O count. The determination unit 102 also aggregates the collected metrics and compares them with a predetermined threshold to determine whether an abnormality has occurred, such as an abnormal state of the control plane 10, a failure of a server or container, or congestion in the communication control system 1.

Preferably, for service metrics, the determination unit 102 uses numerical values collected for each message queue of each network function. For server or container metrics, the determination unit 102 uses server or container metrics corresponding to each network function.

Preferably, the determination unit 102 aggregates the service metrics and the server or container metrics corresponding to the service metrics as a set, and determines an abnormality in the communication control system 1. In addition, the determination unit 102 may also use these metrics to determine the occurrence of a failure that requires isolation of the cause of the failure, thereby detecting the failure location as well.

Message queue 103 is realized, for example, by a program executed by a server or a container, and controls the amount of communication signals by UE 21 based on the determination results by determination unit 101 and determination unit 102.

Message queue 103 has a signal control function, and has, for example, a FIFO (First In First Out) or LIFO (Last In First Out) function, and also performs prioritization processing. For example, in the prioritization processing, message queue 103 processes signals according to the priority of communication. For example, when signals become congested, message queue 103 can lower the priority of signal processing for low-priority UE 21 or services, and raise the priority of signal processing for high-priority UE 21 or services. This allows message queue 103 to, for example, postpone processing of low-priority signals and perform processing when high-priority signals are free, thereby enabling signal processing to be leveled out.

In addition, in a situation where messages are cumulatively piling up in message queue 103, causing congestion, or where congestion may occur, message queue 103 may delete the signal itself. This makes it possible to avoid messages piling up in message queue 103, or unintended loss of messages due to message queue 103 overflowing, thereby alleviating the congestion state or maintaining the normality of the sequence. As a metric representing the state of message queue 103, the amount of signals piling up in the queue, or the ratio of the amount of piling up signals to the queue length (buffer size), etc. are used.

Message queue 103 may be set independently for each network function, or may be set commonly. When message queue 103 is set independently, for example, a discrimination unit 101, a judgment unit 102, and a message queue 103 are provided within one network function, as in AMF 11 in FIG. 1. On the other hand, when message queue 104 is set commonly, for example, as shown in FIG. 1, a discrimination unit 101, a judgment unit 102, and message queues 103a to 103h corresponding to each network function are provided on control bus 3.

If the message queue 103 is set independently for each network function, the discrimination unit 101, judgment unit 102, message queues 103a to 103h, etc. do not need to be provided on the control bus 3. Also, if the message queue 104 is set in common, the discrimination unit 101, judgment unit 102, and message queue 103 do not need to be provided in each network function.

When message queue 103 is set independently for each network function, message queue 103 can easily control signals for each network function. Furthermore, message queue 103 can set a priority for each network function, so it is possible to control signals taking into account differences in processing load trends for different network functions.

In addition, by comparing the signal volume of multiple message queues 103, the message queue 103 can grasp the signal arrival status, so by grasping the state of each queue, it becomes easier to detect the problem area when a failure or malfunction occurs. For example, when a problem occurs with a specific function, the message queue 103 can speed up recovery from the failure by taking action limited to that specific function.

Preferably, the message queue 103 determines the priority of the communication by the UE 21 based on the result of the determination by the determination unit 101, and if an abnormality occurs in the communication control system 1, restricts the connection of the UE 21 to the DN 24 according to the priority of the communication by the UE 21.

For example, when an abnormality occurs in the communication control system 1, if the priority of the communication by the UE 21 is medium, the message queue 103 delays the connection of the UE 21 to the DN 24. Also, when an abnormality occurs in the communication control system 1, if the priority of the communication by the UE 21 is low, the message queue 103 restricts the connection of the UE 21 to the DN 24.

(Problems with the prior art)
In order to completely avoid any impact on users and services when a fault occurs in the control plane and signal congestion occurs, it is necessary to secure a sufficient amount of resources to enable signal processing even when signal congestion occurs. However, it is not easy to estimate in advance the amount of resources required when signal congestion occurs. Moreover, securing a sufficient amount of resources to deal with congestion when it occurs is not economically appropriate.

Therefore, in the method disclosed in Non-Patent Document 1, on the assumption that services have priority, control is performed to uniformly delay the timing of transmission for low-priority services or connection requests from terminals. By delaying the timing of transmission with this method, it is possible to increase the opportunities for transmission for important communications, and by increasing the success rate of important communications, it is possible to mitigate the decline in reliability of the service as a whole. On the other hand, this method cannot flexibly control when a mission-critical service with extremely high communication quality requirements occurs in addition to the use of general applications such as web browsing. Conversely, this method has the problem of not being able to flexibly control when a situation occurs in which terminals with low communication quality requirements are mixed, such as in the case of IoT. Furthermore, when there are an extremely large number of devices to be controlled, such as sensor devices, simply controlling the timing of transmission is not sufficient. Control according to the type of terminal or service is required.

The communication control system 1 according to this embodiment has the discrimination unit 101, the determination unit 102, and the message queue 103 described above. As a result, the communication control system 1 can perform more flexible control than conventional systems, even in a situation where communication terminals or services with various requirements are mixed, and can alleviate degradation of user quality and congestion.

In addition, the communication control system 1 collects metrics related to mobile services and metrics of servers or containers, and determines abnormalities in the communication control system 1. This enables the communication control system 1 to respond not only to simple physical failures such as server failures, but also to abnormal conditions resulting from the mechanisms of the mobile control plane.

<Processing flow>
Next, the process flow of the communication control method according to this embodiment will be described.

FIG. 2 is a sequence diagram showing an example of processing in the communication control system according to this embodiment. This processing shows an example of processing in the communication control system 1 when the AMF 11 has a discrimination unit 101, a determination unit 102, and a message queue 103.

Because the AMF 11 is a network function that is always passed through when accessing from the UE 21, congestion due to concentrated access from the UE 21 is likely to occur. Therefore, it is desirable for the communication control system 1 to have a discrimination unit 101, a judgment unit 102, and a message queue 103 in the AMF 11.

(Normal processing)
When the communication control system 1 is operating normally and no abnormality occurs, the communication control system 1 executes the processes shown in steps S201 to S205, for example.

In step S201, the UE 21 transmits a connection request to the AMF 11 to request a connection to the DN 24. This connection request includes information such as the SUPI.

In step S202, when the message queue 103 of the AMF 11 accepts a connection request from the UE 21, it requests, for example, the discrimination unit 101 to discriminate the terminal type and/or service type of the UE 21. As a result, the discrimination unit 101 discriminates the terminal type, service type, or the terminal type and service type of the UE 21 based on, for example, the SUPI included in the connection request.

In step S203, the discrimination unit 101 requests, for example, the determination unit 102 to make a metrics determination. Note that this process may also be such that the message queue 103 requests the determination unit 102 to make a metrics determination. As a result, the determination unit 102 collects metrics of the communication control system 1 and determines whether there is an abnormality in the communication control system 1. Here, as described above, since no abnormality has occurred in the communication control system 1, the determination result by the determination unit 102 is, for example, "no abnormality."

In step S204, the determination unit 102 notifies the message queue 103 of, for example, the determination result by the discrimination unit 101 and the determination result by the determination unit 102. Note that the determination result by the discrimination unit 101 may be notified to the message queue 103 by the discrimination unit 101.

In step S205, if the determination result by the determination unit 102 is "no abnormality", the message queue 103 sends a session establishment request to the SMF 12 to request the establishment of a session without restricting the connection of the UE 21 to the DN 24.

(Handling Abnormal Events)
When an abnormality occurs in the communication control system 1, the communication control system 1 restricts the connection of the UE 21 to the DN 24 according to the priority of the communication by the UE 21.

For example, if an abnormality occurs in the communication control system 1 and the priority of communication by the UE 21 is medium, the communication control system 1 executes the process of steps S211 to S215.

In step S211, UE21 sends a connection request to AMF11 to request connection to DN24.

In step S212, when the message queue 103 of the AMF 11 accepts a connection request from the UE 21, it requests, for example, the discrimination unit 101 to discriminate the terminal type and/or service type of the UE 21. As a result, the discrimination unit 101 discriminates the terminal type, service type, or the terminal type and service type of the UE 21 based on, for example, the SUPI included in the connection request.

In step S213, the discrimination unit 101, for example, requests the determination unit 102 to make a metrics determination. Note that this process may also be such that the message queue 103 requests the determination unit 102 to make a metrics determination. As a result, the determination unit 102 collects metrics of the communication control system 1 and determines whether there is an abnormality in the communication control system 1. In this case, as described above, an abnormality has occurred in the communication control system 1, and therefore the determination result by the determination unit 102 is "abnormality exists."

In step S214, the determination unit 102 notifies the message queue 103 of, for example, the determination result by the discrimination unit 101 and the determination result by the determination unit 102. Note that the determination result by the discrimination unit 101 may be notified to the message queue 103 by the discrimination unit 101.

In step S215, if the determination result by determination unit 102 is "abnormal", message queue 103 determines the priority of communication by UE 21 based on the determination result by discrimination unit 101. Here, as described above, the priority of communication by UE 21 is medium, so message queue 103 waits a specified outgoing waiting time and then transmits a session establishment request to SMF 12 to request the establishment of a session. In this way, when an abnormality occurs in communication control system 1, if the priority of communication by UE 21 is medium, communication control system 1 performs timing control to delay outgoing to SMF 12.

In step S215, if the priority of the communication by UE21 is higher than the predetermined priority, the message queue 103 sends a session establishment request to the SMF 12 without waiting for the predetermined call waiting time.

In addition, if an abnormality occurs in the communication control system 1 and the priority of communication by the UE 21 is low, the communication control system 1 executes the process of steps S221 to S225.

In step S221, UE21 sends a connection request to AMF11 to request connection to DN24.

In step S222, when the message queue 103 of the AMF 11 accepts a connection request from the UE 21, it requests, for example, the discrimination unit 101 to discriminate the terminal type and/or service type of the UE 21. As a result, the discrimination unit 101 discriminates the terminal type, service type, or the terminal type and service type of the UE 21 based on, for example, the SUPI included in the connection request.

In step S223, the discrimination unit 101, for example, requests the determination unit 102 to make a metrics determination. Note that this process may also be such that the message queue 103 requests the determination unit 102 to make a metrics determination. As a result, the determination unit 102 collects metrics of the communication control system 1 and determines whether there is an abnormality in the communication control system 1. In this case, as described above, an abnormality has occurred in the communication control system 1, and therefore the determination result by the determination unit 102 is "abnormality present."

In step S224, the determination unit 102 notifies the message queue 103 of, for example, the determination result by the discrimination unit 101 and the determination result by the determination unit 102. Note that the determination result by the discrimination unit 101 may be notified to the message queue 103 by the discrimination unit 101.

In step S225, if the determination result by the determination unit 102 is "abnormal", the message queue 103 determines the priority of communication by UE 21 based on the determination result by the determination unit 101. Here, as described above, since the priority of communication by UE 21 is low, the message queue 103 restricts outgoing calls from UE 21. In this way, when an abnormality occurs in the communication control system 1, if the priority of communication by UE 21 is low, the communication control system 1 restricts outgoing calls on the UE 21 side without making a call to SMF 12.

(Communication control system processing)
3 is a flowchart showing an example of processing of the communication control system according to the present embodiment. This processing shows an example of processing in which, when the communication control system 1 receives a connection request from a communication terminal to a communication network, the communication control system 1 controls the amount of communication signals of the communication terminal based on the determination result by the determination unit 101 and the determination result by the determination unit 102.
In this process, the AMF 11 may have the discrimination unit 101, the judgment unit 102, and the message queue 103, and the control bus 3 may have the discrimination unit 101, the judgment unit 102, and the message queue 103. Also, detailed description of the process similar to the process described in FIG. 2 will be omitted here.

In step S301, the discrimination unit 101 discriminates the type of communication terminal and/or service in response to a connection request from the communication terminal (UE21) to the communication network (DN24).

In step S302, the determination unit 102 collects metrics for the communication control system 1, including metrics for network function services and metrics for servers or containers.

In step S303, the determination unit 102 determines whether or not there is an abnormality in the communication control system 1 based on the collected metrics. For example, if any of the collected metrics (indicators) exceeds a predetermined threshold, the determination unit 102 determines that there is an abnormality in the communication control system 1. If there is an abnormality in the communication control system 1, the communication control system 1 transitions the process to step S304. On the other hand, if there is no abnormality in the communication control system 1, the communication control system 1 ends the process of FIG. 3.

When the process proceeds to step S304, the message queue 103 determines the priority of communication by the communication terminal based on the type of communication terminal and/or service determined by the determination unit 101.

In step S305, the message queue 103 determines whether the priority of the communication by the communication terminal is equal to or higher than a predetermined priority (first priority). Here, the predetermined priority (first priority) is, for example, a priority that corresponds to a communication that is more urgent than other communications or a communication that is more important, and is set in advance. If the priority of the communication by the communication terminal is not equal to or higher than the predetermined priority, the message queue 103 transitions the process to step S306. On the other hand, if the priority of the communication by the communication terminal is equal to or higher than the predetermined priority, the message queue 103 terminates the process of FIG. 3.

When the process proceeds to step S306, the message queue 103 restricts communication by the communication terminal according to the priority of the communication by the communication terminal. For example, the message queue 103 delays the connection of the communication terminal to the communication network when the priority of the communication by the communication terminal is a second priority lower than the first priority, and restricts the connection of the communication terminal to the communication network when the priority of the communication by the communication terminal is a third priority lower than the second priority. Here, the third priority is, for example, a priority that is set in advance to correspond to communication that is less urgent or less important than other communications.

By using the processing shown in FIG. 3, the communication control system 1 can flexibly control the connection of communication terminals to the communication network even when communication terminals with different requirements for communication quality are mixed in the mobile network.

In the above description, the communication control system 1 is described as a core network of a 5G mobile network, but this embodiment can also be applied to mobile networks of other generations.

<Hardware configuration example>
The communication control system 1 is configured by, for example, a communication control device having a hardware configuration of a computer 1000 as shown in FIG. 4, or by a plurality of communication control devices.

FIG. 4 is a diagram showing an example of the hardware configuration of a computer according to this embodiment. In the example of FIG. 4, a computer 1000 has a processor 1001, a memory 1002, a storage device 1003, a communication device 1004, an input device 1005, an output device 1006, and a bus B, etc.

The processor 1001 is, for example, an arithmetic device such as a CPU (Central Processing Unit) that realizes various functions by executing a specific program. The memory 1002 is a storage medium readable by the computer 1000, and includes, for example, RAM (Random Access Memory) and ROM (Read Only Memory). The storage device 1003 is a computer-readable storage medium, and may include, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive), various optical disks, and magneto-optical disks.

The communication device 1004 includes one or more pieces of hardware (communication devices) for communicating with other devices via a wireless or wired network. The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one configuration (e.g., an input/output device such as a touch panel display).

The bus B is commonly connected to each of the above components and transmits, for example, address signals, data signals, and various control signals. Note that the processor 1001 is not limited to a CPU, and may be, for example, a DSP (Digital Signal Processor), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array).

(supplement)
The communication control system 1 and the communication control device in this embodiment may be realized not only by a dedicated device but also by a general-purpose computer. In this case, a program for realizing the functions may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed. Note that the "computer system" here includes hardware such as an OS and peripheral devices.

"Computer-readable recording media" also includes various storage devices such as portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices 1003 built into computer systems. Furthermore, "computer-readable recording media" may also include devices that dynamically hold a program for a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, and devices that hold a program for a certain period of time, such as volatile memory within a computer system that serves as a server or client in such cases.

The above program may be for realizing some of the functions described above, or may be capable of realizing the functions described above in combination with a program already recorded in the computer system, or may be realized using hardware such as a PLD (Programmable Logic Device) or FPGA (Field Programmable Gate Array).

Effects of the embodiment
According to this embodiment, even when communication terminals with different requirements for communication quality are mixed in a mobile network, it becomes possible to flexibly control the connection of the communication terminals to the communication network.

For example, this technology makes it possible to control the amount of signals in each network function, making it possible to avoid degradation of user quality due to delays in signal processing. Furthermore, when signal congestion occurs, the communication control system 1 can alleviate the congestion, making it possible to ensure important communications.

Furthermore, according to this embodiment, when a communication terminal is connected, the type of communication terminal and/or the type of service are determined and controlled for the arriving signal, thereby making it possible to mitigate the effects of degradation of connection quality, etc., depending on the type of communication terminal and/or the type of service.

Furthermore, the communication control system 1 according to this embodiment collects metrics related to mobile services and metrics of servers or containers, and determines failures or abnormal conditions associated with failures based on the collected metrics. This enables the communication control system 1 to respond not only to simple physical failures of servers, etc., but also to failures caused by the mechanisms of the control plane of the mobile network.

Summary of the embodiment
This specification discloses at least the following communication control system, communication control device, communication control method, and program.
(Section 1)
A communication control system for controlling connection of a communication terminal to a communication network in a mobile network, comprising:
a discrimination unit that discriminates a type of the communication terminal and/or a type of service in response to a connection request from the communication terminal to the communication network;
a determination unit that collects metrics of the communication control system and determines an abnormality in the communication control system based on the collected metrics;
a message queue that controls a signal amount of communication by the communication terminal based on a determination result by the determination unit and a determination result by the determination unit;
A communication control system having the above configuration.
(Section 2)
The communication control system of claim 1, wherein the metrics of the communication control system include metrics of services in a control plane of the communication control system and metrics of servers or containers corresponding to the service metrics.
(Section 3)
The message queue includes:
determining a priority of the communication by the communication terminal based on the determination result;
when the abnormality occurs in the communication control system, restricting the connection of the communication terminal to the communication network according to a priority of the communication by the communication terminal.
3. The communication control system according to claim 1 or 2.
(Section 4)
The message queue includes:
When the abnormality occurs in the communication control system,
delaying a connection of the communication terminal to the communication network when the priority of the communication is a second priority lower than a first priority;
restricting the connection of the communication terminal to the communication network when the priority of the communication is a third priority lower than the second priority.
4. A communication control system as recited in claim 3.
(Section 5)
The communication control system according to any one of claims 1 to 4, wherein the abnormality in the communication control system includes an abnormal state of a control plane of the communication control system, a failure of a server or container constituting the communication control system, or congestion in the communication control system.
(Section 6)
A communication control device that controls connection of a communication terminal to a communication network in a mobile network, comprising:
a discrimination unit that discriminates a type of the communication terminal and/or a type of service in response to a connection request from the communication terminal to the communication network;
A determination unit that collects and determines metrics of the communication control device;
a message queue that controls a signal amount of communication by the communication terminal based on a determination result by the determination unit and a determination result by the determination unit;
A communication control device having
(Section 7)
A communication control method for controlling connection of a communication terminal to a communication network in a mobile network, comprising:
The communication control system
a determination process of determining a type of the communication terminal and/or a type of service in response to a connection request from the communication terminal to the communication network;
A determination process for collecting and determining metrics of the communication control system;
a process of controlling a signal amount of communication by the communication terminal based on a determination result of the determination process and a determination result of the determination process;
A communication control method for performing the above.
(Section 8)
8. A program for causing a computer to execute the communication control method according to claim 7, or a storage medium storing said program.

Although the present embodiment has been described above, the present invention is not limited to this specific embodiment, and various modifications and variations are possible within the scope of the gist of the present invention as described in the claims.

1 Communication control system 10 Control plane 21 UE (communication terminal)
24 DN (communications network)
101 Discrimination unit 102 Judgment unit 103 Message queue 1000 Computer

Claims (8)

A communication control system for controlling connection of a communication terminal to a communication network in a mobile network, comprising:
a discrimination unit that discriminates a type of the communication terminal and/or a type of service in response to a connection request from the communication terminal to the communication network;
a determination unit that collects metrics of the communication control system and determines an abnormality in the communication control system based on the collected metrics;
a message queue that controls a signal amount of communication by the communication terminal based on a determination result by the determination unit and a determination result by the determination unit;
A communication control system having the above configuration. The communication control system according to claim 1, wherein the metrics of the communication control system include metrics of services in a control plane of the communication control system and metrics of servers or containers corresponding to the metrics of the services. The message queue includes:
determining a priority of the communication by the communication terminal based on the determination result;
when the abnormality occurs in the communication control system, restricting the connection of the communication terminal to the communication network according to a priority of the communication by the communication terminal.
The communication control system according to claim 1 . The message queue includes:
When the abnormality occurs in the communication control system,
delaying a connection of the communication terminal to the communication network when the priority of the communication is a second priority lower than a first priority;
restricting the connection of the communication terminal to the communication network when the priority of the communication is a third priority lower than the second priority.
The communication control system according to claim 3 . The communication control system according to claim 1 or 2, wherein the abnormality in the communication control system includes an abnormal state of a control plane of the communication control system, a failure of a server or container constituting the communication control system, or congestion in the communication control system. A communication control device that controls connection of a communication terminal to a communication network in a mobile network, comprising:
a discrimination unit that discriminates a type of the communication terminal and/or a type of service in response to a connection request from the communication terminal to the communication network;
A determination unit that collects and determines metrics of the communication control device;
a message queue that controls a signal amount of communication by the communication terminal based on a determination result by the determination unit and a determination result by the determination unit;
A communication control device having A communication control method for controlling connection of a communication terminal to a communication network in a mobile network, comprising:
The communication control system
a determination process of determining a type of the communication terminal and/or a type of service in response to a connection request from the communication terminal to the communication network;
A determination process for collecting and determining metrics of the communication control system;
a process of controlling a signal amount of communication by the communication terminal based on a determination result of the determination process and a determination result of the determination process;
A communication control method for performing the above. A program that causes a computer to execute the communication control method described in claim 7.

Images