CN115604857B - Method and system for user grouping monitoring based on signaling plane - Google Patents
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- H04W76/10—Connection setup
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
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Abstract
The invention discloses a method and a system for user grouping monitoring based on a signaling plane, wherein the method comprises the following steps: the PDU conversation resource application function establishes a flow channel for ensuring bit rate; the PDU conversation resource application function operates a strategy authentication subscription service to apply for conversation monitoring subscription to the strategy control function and sends registration request information to the strategy control function; configuring a characteristic field representing the unique identity of the user in the registration request information, and associating the characteristic field with the service and the event; the policy control function associates a plurality of users with the same characteristic field value according to the received registration request information to form a subscription event user group; according to the method, when the user grouping monitoring is needed, the strategy control function and the PDU session resource application function in the core network do not need to build the user group in a self-defined way, so that the operation times of maintenance personnel can be effectively reduced, the resource storage consumption is effectively reduced, the signaling processing speed is accelerated, and the method is more suitable for high-capacity and high-concurrency scenes.
Description
Technical Field
The present invention relates to the field of communication network monitoring technologies, and in particular, to a method and a system for user packet monitoring based on a signaling plane.
Background
In the fifth generation (5rd generation,5G) network architecture, users initiate creation of a guaranteed bit rate traffic channel through AF (PDU session resource application function), for which some network managers want to count the throughput of users in the form of packets to achieve speed limiting operations on the user group. In this regard, as shown in fig. 6, in the conventional method, a target user is generally customized from pcf (policy control function) to form a user group, then a usage quota is allocated through a subscription service, and actions such as rate control are achieved by calculating the usage of the user group by pcf. However, for this, the resource consumption and data storage pressure of pcf is increased due to the need to associate each user with a service. In addition, if the AF wants to manage the business event groups of the users, the AF also needs to self-define and construct the user groups, and associate each user with an event, thereby increasing the resource consumption and the data storage pressure of the AF.
Disclosure of Invention
The invention aims to provide a method and a system for user grouping monitoring based on a signaling plane, which can reduce resource consumption and data storage pressure of a strategy control function and a PDU session resource application function in a communication system and can enable the strategy control function and the PDU session resource application function to acquire corresponding user group information.
In order to achieve the above object, the present invention discloses a method for monitoring user packets based on a signaling plane, which comprises:
according to PDU conversation reestablishment flow information initiated by a terminal, a PDU conversation resource Application Function (AF) establishes a flow channel which is connected between the terminal and a core network and ensures bit rate;
the PDU session resource Application Function (AF) operates a policy authentication subscription service to apply for session monitoring subscription to a Policy Control Function (PCF), and sends registration request information (EventsSubscReqData) to the Policy Control Function (PCF);
configuring a feature field representing a unique identity of a user in the registration request information (eventsssubscnreqdata), and associating the feature field with a service and an event;
the Policy Control Function (PCF) associates a plurality of users having the same value of the characteristic field according to the received registration request information to form a subscription event user group.
Preferably, when the session management function reports the usage of the user network signal, the policy control function performs public usage statistics on users with the same value in the feature field, and initiates a policy control update notification service to the session management function through the policy control function, so as to implement traffic speed limiting or offline operation on the subscription event user group.
Preferably, the policy control function initiates a policy control update notification service to the session management function and initiates a policy authentication notification service to the PDU session resource application function through the policy control function.
Preferably, the data type of the feature field is a character string.
The invention also discloses a system for monitoring the user grouping based on the signaling plane, which comprises:
the flow channel establishing module is used for establishing a flow channel which is connected between the terminal and the core network and ensures bit rate based on PDU session resource application function according to PDU session reconstruction flow information initiated by the terminal;
a session subscription module, configured to apply a session monitoring subscription to a policy control function based on the PDU session resource application function operation policy authentication subscription service, and send registration request information to the policy control function;
a user identity marking module for configuring a characteristic field representing a unique identity of a user in the registration request information and associating the characteristic field with a service and an event;
and the user association module is used for associating a plurality of users with the same characteristic field value based on the policy control function and the received registration request information so as to form a subscription event user group.
Preferably, the system also comprises a flow statistics module and a flow control module;
the flow statistics module is used for carrying out public usage statistics on users with the same value of the characteristic field based on the strategy control function when the session management function reports the usage of the user network signals;
and the flow control module is used for initiating a strategy control update notification service to the session management function through the strategy control function so as to realize the flow speed limiting or offline operation of the subscription event user group.
Preferably, the flow control module initiates a policy control update notification service to the session management function through the policy control function, and initiates a policy authentication notification service to the PDU session resource application function through the policy control function.
Preferably, the data type of the feature field is a character string.
The invention also discloses another system for monitoring user grouping based on the signaling plane, which comprises:
one or more processors;
a memory;
and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs including instructions for performing the method of user packet monitoring based on a signaling plane as described above.
The invention also discloses a computer readable storage medium comprising a computer program executable by a processor to perform the method of user packet monitoring based on a signaling plane as described above.
Compared with the prior art, the technical scheme of the invention has the advantages that the characteristic field representing the unique identity of the user is configured in the registration request information and is associated with the service and the event, so that when the user is required to be monitored in a grouping way, the Policy Control Function (PCF) and the PDU session resource Application Function (AF) in the core network do not need to be self-defined to construct a user group, and only the corresponding characteristic field is required to be carried when the AF initiates the establishment of a flow channel each time, thereby effectively reducing the operation times of maintenance personnel; in addition, the resource storage consumption of PCF and AF can be effectively reduced, the storage of data volume in a server is greatly reduced, the logic judgment flow is simplified, the signaling processing speed is accelerated, and the method is more suitable for high-capacity and high-concurrency scenes.
Drawings
Fig. 1 is a flowchart of a method for user packet monitoring in an embodiment of the present invention.
Fig. 2 is a schematic diagram of a PDU session resource application function for implementing a traffic channel setup in an embodiment of the present invention.
Fig. 3 is a schematic diagram of the implementation of usage monitoring for a user by a 5GC packet according to an embodiment of the present invention.
Fig. 4 is a diagram showing one association of feature fields in an embodiment of the present invention.
Fig. 5 is another association diagram of feature fields in an embodiment of the present invention.
Fig. 6 is a schematic diagram of a prior art 5GC for user packet monitoring.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present invention in detail, the following description is made in connection with the embodiments and the accompanying drawings.
The embodiment discloses a method for monitoring user groups based on a signaling plane, which is used for a core network in a wireless communication system, wherein the wireless communication system can be a 5G system or other communication systems compatible with the 5G system. Taking a 5G system as an example, the network elements and service modules of the 5GC (core network) in this embodiment are as follows:
1. a policy control function (Policy Control Function), abbreviated as PCF, provides a policy-based decision mechanism and FLOW-based charging function for a standard 5GC network element;
2. session management function (Session Management Function), abbreviated as SMF, responsible for tunnel maintenance, IP address allocation and management, UPF selection, policy enforcement and control in QoS, charging data collection, roaming, etc.;
3. an access and mobility management function (Access and Mobility Management Function), abbreviated as AMF, performing registration, connection, reachability, mobility management; providing a session management message transmission channel for UE and SMF, providing authentication and authentication functions for user access, and providing a terminal and a wireless core network control plane access point;
4. PDU session resource application function (Application Function), AF for short, refers to various services of the application layer, and can be applications inside operators such As Volte AF (Volte As like 4G), AF of third parties (such As video server and game server);
5. the user plane function (User Plane Function), UPF for short, is mainly used for the route forwarding of data from the base station to the network;
6. policy control update notification service (npcf_smplicycorol_updatenotify);
7. policy control request service (npcf_smpolicy control_create);
8. policy authentication creation service (npcf_policy_creation);
9. policy authentication notification service (npcf_policy_notification);
10. policy authentication subscription service (npcf_policy authentication_subscription).
In addition, the network element and the service function module of the 5GC belong to known mature technologies, so the specific working principle thereof is not repeated.
As shown in fig. 1, the method in this embodiment includes the following steps:
s1: according to PDU conversation reconstruction flow information initiated by a terminal, AF establishes a flow channel which connects the terminal and a core network and ensures bit rate;
s2: the AF operation strategy authentication subscription service applies for session monitoring subscription to the PCF and sends registration request information (EventsSubscReqData) to the PCF;
s3: configuring a feature field representing a unique identity of a user in registration request information and associating the feature field with a service (e.g., fig. 4) and an event (e.g., fig. 5);
s4: and the PCF associates a plurality of users with the same characteristic field value according to the received registration request information to form a subscription event user group.
Specifically, based on the above method, the flow of performing user packet monitoring by the 5GC is:
first, as shown in fig. 2, the flow channel is constructed according to the following procedure:
s10: an AF construction request message structure AppSessionContextReq data to Create a new request, and requests to Create a traffic channel guaranteeing bit rate to the PCF through an Npcf_policy_creation;
s11: after receiving the AF creation request, the PCF constructs a corresponding rule according to AppSessionContextREQData, encapsulates the rule into SmPolicyDecision, and sends the SmPolicyDecision to the SMF through the Npcf_SMPolicyControl_UpdateNotify;
s12: when the SMF receives the smpolicy decision from the PCF, the SMF may take appropriate action to reconfigure the user plane functions of the PDU session.
Secondly, AF applies to PCF to monitor subscription to corresponding session through operating Npcf_policy authorization_Subscribe, AF sends EventsSubscReqData to PCF, and initiates subscription to a certain event. In the 5GC communication protocol, the data definition type of eventsssubscnreqdata is shown in table 1 below, where "eventGroupId" is a feature field.
TABLE 1
Then, based on the configuration of the feature field eventGroupId, when the user needs to be monitored in a grouping way, the PCF does not need to associate the user group with the service again by self-defining, and the PCF directly associates the eventGroupId with the service, and the AF associates the eventGroupId with the event.
Finally, the PCF notifies the AF of the corresponding subscription event, that is, after the PCF receives the event subscription initiated by the AF, initiates an npcf_policy_notification action, sends EventsNotification data to the AF, notifies the AF of the monitoring message of the event corresponding to the AF, and in the communication protocol of 5GC, the data definition type of the EventsNotification is shown in table 2 below.
TABLE 2
More specifically, as shown in fig. 3, when the SMF reports the usage of the user network signal, the PCF performs public usage statistics on the users with the same value of the feature field, and initiates a policy control update notification service to the SMF through the PCF, so as to implement traffic speed limit or offline operation on the subscription event user group, thereby implementing traffic monitoring on the target user group.
In addition, when the PCF initiates the policy control update notification service to the session management function SMF, the PCF can also initiate the policy authentication notification service to the AF. When AF receives notification event data EventsNotification reported by PCF, reporting condition of corresponding packet event is known by EventGroupID, and public usage of current packet users is counted according to usgrep data (inherent content in 5GC communication protocol) in EventsNotification, and whether to update or terminate flow channel for users in user group is determined.
Alternatively, as in tables 1 and 2, the data type of the feature field is a character string.
According to the method, the feature field representing the unique identity of the user is configured in the registration request information and is associated with the service and the event, so that PCF and AF in the core network do not need to self-define and construct a user group when the user is required to be monitored, and only need to carry the corresponding feature field when the AF initiates the establishment of a flow channel each time, thereby effectively reducing the operation times of maintenance personnel; in addition, the resource storage consumption of PCF and AF can be effectively reduced, the storage of data volume in a server is greatly reduced, the logic judgment flow is simplified, the signaling processing speed is accelerated, and the method is more suitable for high-capacity and high-concurrency scenes.
In another preferred embodiment of the present invention, a system for monitoring user packets based on a signaling plane is also disclosed, which includes:
the flow channel establishing module is used for establishing a flow channel which is connected between the terminal and the core network and ensures bit rate based on PDU session resource application function according to PDU session reconstruction flow information initiated by the terminal;
a session subscription module, configured to apply a session monitoring subscription to a policy control function based on the PDU session resource application function operation policy authentication subscription service, and send registration request information to the policy control function;
a user identity marking module for configuring a characteristic field representing a unique identity of a user in the registration request information and associating the characteristic field with a service and an event;
and the user association module is used for associating a plurality of users with the same characteristic field value based on the policy control function and the received registration request information so as to form a subscription event user group.
Further, the system also comprises a flow statistics module and a flow control module. And the flow statistics module is used for carrying out public usage statistics on the users with the same value and the characteristic fields based on the strategy control function when the session management function reports the usage of the user network signals.
The flow control module is used for initiating a policy control update notification service to the session management function through the policy control function so as to realize the flow speed limit or offline operation of the subscription event user group.
Furthermore, the flow control module initiates a strategy control update notification service to the session management function through the strategy control function and initiates a strategy authentication notification service to the PDU session resource application function through the strategy control function.
The present invention also discloses another system for user packet monitoring based on a signaling plane, comprising one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs comprising instructions for performing the method for user packet monitoring based on a signaling plane as described above. The processor may be a general-purpose central processing unit (Central Processing Unit, CPU), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits configured to execute related programs to implement the functions required to be performed by the modules in the signaling plane based user packet monitoring system of the embodiments of the present application, or to perform the method for signaling plane based user packet monitoring of the embodiments of the present application.
The invention also discloses a computer readable storage medium comprising a computer program executable by a processor to perform the method of user packet monitoring based on a signaling plane as described above. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a read-only memory (ROM), or a random-access memory (random access memory, RAM), or a magnetic medium, for example, a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, for example, a digital versatile disk (digital versatile disc, DVD), or a semiconductor medium, for example, a Solid State Disk (SSD), or the like.
The present application also discloses a computer program product or a computer program comprising computer instructions stored in a computer readable storage medium. The processor of the electronic device reads the computer instructions from the computer readable storage medium and executes the computer instructions to cause the electronic device to perform the above-described method of user packet monitoring based on a signaling plane.
The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the claims, which follow, as long as the scope of the invention is defined by the claims.
Claims (8)
1. A method for user packet monitoring based on a signaling plane, comprising:
according to PDU conversation reconstruction flow information initiated by a terminal, a PDU conversation resource application function establishes a flow channel which is connected between the terminal and a core network and ensures bit rate;
the PDU session resource application function operates a policy authentication subscription service to apply session monitoring subscription to a policy control function and sends registration request information to the policy control function;
configuring a characteristic field representing the unique identity of a user in the registration request information, and associating the characteristic field with a service and an event;
the policy control function associates a plurality of users with the same characteristic field value according to the received registration request information to form a subscription event user group; when the session management function reports the consumption of the user network signal, the policy control function makes public consumption statistics for users with the same value in the feature field, and initiates policy control update notification service to the session management function through the policy control function so as to realize the flow rate limiting or offline operation of the subscription event user group.
2. The method for signaling-based user packet monitoring as recited in claim 1 wherein a policy control update notification service is initiated to the session management function by the policy control function and a policy authentication notification service is also initiated to the PDU session resource application function by the policy control function.
3. The method for user packet monitoring based on a signaling plane according to claim 1, wherein the data type of the feature field is a character string.
4. A system for user packet monitoring based on a signaling plane, comprising:
the flow channel establishing module is used for reconstructing flow information according to PDU session initiated by the terminal and establishing a flow channel for ensuring bit rate between the terminal and the core network based on PDU session resource application function;
a session subscription module, configured to apply a session monitoring subscription to a policy control function based on the PDU session resource application function operation policy authentication subscription service, and send registration request information to the policy control function;
a user identity marking module for configuring a characteristic field representing a unique identity of a user in the registration request information and associating the characteristic field with a service and an event;
the user association module is used for associating a plurality of users with the same characteristic field value based on the strategy control function and the received registration request information so as to form a subscription event user group;
the flow statistics module is used for carrying out public consumption statistics on the users with the same value and the characteristic fields based on the strategy control function when the session management function reports the consumption of the user network signals;
and the flow control module is used for initiating a policy control update notification service to the session management function through the policy control function so as to realize the flow speed limit or offline operation of the subscription event user group.
5. The system for user packet monitoring based on signaling plane according to claim 4, wherein said flow control module initiates a policy control update notification service to said session management function via said policy control function and initiates a policy authentication notification service to said PDU session resource application function via a policy control function.
6. The system for user packet monitoring based on signaling plane of claim 4 wherein the data type of the signature field is a string.
7. A system for user packet monitoring based on a signaling plane, comprising:
one or more processors;
a memory;
and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs comprising instructions for performing the method of signaling plane based user packet monitoring of any of claims 1 to 3.
8. A computer readable storage medium comprising a computer program executable by a processor to perform the method of signalling plane based user packet monitoring of any one of claims 1 to 3.
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