KR20220053925A - Interworking support device and interworking support method for nf service - Google Patents

Abstract

The present invention discloses an NF service linkage support device and an NF service linkage support method, which can dramatically improve signaling (SBI message) processing delay in SCP through the realization of specific technologies for quickly processing SBI messages in SCP, such as liquidity/non-liquidity analysis of SBI messages and message size reduction through changing message contents of non-liquidity. The NF service linkage support device includes: a change operation performing unit which receives a message of a first NF in the first service agent of the first NF and performs a message change operation of reducing a size of the message; and a communication unit which performs the message change operation in the first service agent of the first NF to transmit a size-reduced change message to a service mesh network to allow a second service agent of the second NF to receive the change message through the service mesh network.

Description

NF service interworking support device and NF service interworking support method

The present invention relates to an SCP (Service Communication Proxy) technology of a function that interworks communication between NF services.

In 5G, a network structure is defined to support a terminal, a base station (access), a core, and a server end-to-end, and a single node (eg S-GW, P-GW, etc.) is complex in existing LTE (4G). By separating the functions of control signaling and data transmission and reception, which were performed as , a network structure is defined in which a control signaling function area (Control Plane) and a data transmission/reception function area (User Plane) are divided.

At this time, in 5G, the control node of the Control Plane (CP) controls AMF (Access and Mobility Management Function) that controls access to the wireless section of the terminal, and PCF that manages/controls policies such as terminal information, subscription service information for each terminal, and billing. (Policy Control Function), SMF (Session Management Function) to control/manage sessions for data service use by terminal, NEF (Network Exposure Function) to share information with external networks, user’s subscriber DB And UDM/AUSF (Unified Data Management / AUthentication Function) to manage/control authentication, NRF (Network Repository Function) to manage/control information on each NF (Network Function) in the network, and to handle subscriber billing It can be defined as CHF (Charging Function).

In 5G, the data node of the User Plane (UP) is a UPF (User Plane Function) that transmits and receives data between the terminal and the server on an external service network (eg the Internet) through a session with the terminal based on the control (interlocking) of the SMF. can be defined

And, in 5G, the control node of the control plane and the data node of the user plane are all referred to as network nodes.

As such, in 5G, NFs that perform specific functions are defined, and interworking/connection between NFs is defined based on communication using SBI (Service Based Interface).

In addition, in recent 5G, an SCP (Service Communication Proxy) is newly defined so that NFs can process communication between various NF services that are communicating through SBI as a mesh structure.

SCP can be seen as acting as an 'SBI bus' in SBA (Service Based Architecture), that is, 5G Architecture, and is composed of a mesh structure that processes all SBI messages between NFs. The SBI message means a data packet including a header of an application layer such as HTTP, HTTP/2, and QUIC.

The SCP domain is the SCP Controller, which centrally controls the interworking between NF services in one SBA Cluster, the Service Mesh network, and the NF service is configured as a Service Mesh network for each of the multiple NF services configured in the SBA Cluster. It can be divided into a number of service agents that enable communication/interworking with incoming and other NF services.

As such, SCP is an NF specialized in Mesh Routing processing that processes communication between NF services by delivering SBI messages through Service Mesh.

On the other hand, the SBI message is an HTTP- and String-based message, and the size of the message is inevitably larger than that of the existing one. Accordingly, as the number of NF services (NF/Pods) increases, the amount of relatively large SBI messages to be processed in SCP is rapidly increasing, and in SCP, there is a technology that can quickly process/deliver such large-sized signaling (SBI messages). need.

However, in the current standard, there is no specific technique for quickly processing a relatively large SBI message in the SCP.

In the present invention, it is intended to dramatically improve the signaling (SBI message) processing delay in the SCP through a detailed technical proposal for quickly processing a relatively large SBI message in the SCP.

The present invention was created in view of the above circumstances, and the object to be reached in the present invention is to process signaling (SBI message) in the SCP through a detailed technical proposal for quickly processing a relatively large SBI message in the SCP An object of the present invention is to provide an NF service interworking support device and NF service interworking support method that can dramatically improve delay.

In an NF service interworking support apparatus according to a first aspect of the present invention for achieving the above object, in the first Service Agent of the first NF, a message change operation to receive the message of the first NF and reduce the size of the message a change operation performing unit to perform; and the first Service Agent of the first NF performs the message change operation and transmits a change message, which is reduced in size, to the Service Mesh network, and the change message is transmitted to the second Service Agent of the second NF through the Service Mesh network. and a communication unit for receiving.

Specifically, the change operation performing unit classifies a message to be changed among received messages based on a preset change control rule, and performs a message change operation to reduce the size of a part of the change object in the classified message. can

Specifically, the change control rule specifies a non-flowing message or a part within the message through analysis of messages transmitted and received through the Service Mesh network, and a change table that reduces the message size by changing a specific message or a part within the message. By the generating message controller, it can be set based on the change table.

Specifically, for the change message transmitted to the Service Mesh network, a communication result through the Service Mesh network is reported to the message controller so that the communication result reported by the message controller can be used when updating the change table It may further include a reporting unit.

Specifically, when it is determined that the message received through the service mesh network is the change message, the change operation performing unit reversely performs the message change operation performed by the service agent of the transmitting side that has transmitted the change message to the After performing a restoration operation to restore the size of the change message, it may be transmitted to the first NF.

In order to achieve the above object, the message controller device according to the second aspect of the present invention specifies a non-flowing message part through message analysis transmitted and received through a service mesh network that processes communication between NF services, and specifies a specific message part a table generation unit for generating a change table to reduce the message size by changing ; and a message change operation for reducing the size of a message or a restoration operation for setting a change control rule in each service agent connected to the service mesh network based on the change table to reduce the size of the message according to the change control rule set by each service agent It includes an agent control unit that can perform

Specifically, the agent control unit sets, for each service agent connected to the service mesh network, a change control rule selectively configured based on the change table, and the selectively configured change control rule changes the size of a message At least one of priority information related to a ratio, identification information for classifying a change algorithm for reducing or restoring the size of a message, change information to which a part of a change target in the message and code information to replace the part in the message are mapped may include

Specifically, the change control rule set for a specific service agent among each service agent connected to the service mesh network is a change selected for the type of message that the specific service agent communicates with other service agents based on the change table may contain information.

Specifically, the change information of the change control rule set in the specific service agent may be configured in pairs of a transmitted message and a received message for each type of message that the specific service agent communicates with other service agents. .

In an NF service interworking support method according to a third aspect of the present invention for achieving the above object, the first Service Agent of the first NF receives the message of the first NF and performs a message change operation to reduce the size of the message. performing a change operation performing step; and the first Service Agent of the first NF performs the message change operation and transmits a change message, which is reduced in size, to the Service Mesh network, and the change message is transmitted to the second Service Agent of the second NF through the Service Mesh network. and a communication step to be received.

In order to achieve the above object, a method of operating a message controller according to a fourth aspect of the present invention specifies a part within a non-flowing message and a specific message through message analysis transmitted and received through a service mesh network that handles communication between NF services. a table creation step of creating a change table to reduce the message size by changing the inner part; and a message change operation for reducing the size of a message or a restoration operation for setting a change control rule in each service agent connected to the service mesh network based on the change table to reduce the size of the message according to the change control rule set by each service agent It includes an Agent control step that enables to perform

According to the NF service interworking support apparatus and NF service interworking support method of the present invention, it is possible to quickly process a relatively large SBI message in the SCP, such as reducing the message size by analyzing the fluidity/non-fluidity of the SBI message and changing the message content of the non-flowing message. We are realizing concrete technologies for

Accordingly, according to the present invention, it is possible to dramatically improve the signaling (SBI message) processing delay in the SCP through the realization of a detailed technology for quickly processing an SBI message of a relatively large size in the SCP.

1 is an exemplary diagram showing 5G Architecture and SCP structure.
2 is a schematic illustration showing a situation in which signaling (SBI message) processing delay occurs in the existing SCP.
3 is a schematic illustration showing a situation in which the signaling (SBI message) processing delay in the SCP is improved when the proposed technology of the present invention is applied.
4 is a block diagram showing the configuration of an NF service interworking support apparatus according to an embodiment of the present invention.
5 is a block diagram showing the configuration of a message controller device according to an embodiment of the present invention.
6 is an exemplary diagram showing an example of analyzing the liquidity/non-liquidity part in the SBI message (eg, Request) in the present invention.
7 and 8 show an example of a Manipulation (Proc. ID/Repo ID) combination used in a message change operation for each service agent and the change table defined in the present invention.
9 is an exemplary view of a call flow showing a process of SBI message processing/delivery in the SCP when the proposed technology of the present invention is applied.
10 is an exemplary diagram illustrating a flow of a method for supporting NF service interworking and a method for operating a message controller device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The present invention relates to an SCP (Service Communication Proxy) technology of a function that interworks communication between NF services.

In 5G, a network structure is defined to support a terminal, a base station (access), a core, and a server end-to-end, and a single node (eg S-GW, P-GW, etc.) is complex in existing LTE (4G). By separating the functions of control signaling and data transmission and reception, which were performed as , a network structure is defined in which a control signaling function area (Control Plane) and a data transmission/reception function area (User Plane) are divided.

1 shows the 5G Architecture and the SCP structure.

As shown in FIG. 1, in 5G, the control node of the Control Plane (CP) controls AMF (Access and Mobility Management Function) for controlling access to the wireless section of the terminal, terminal information, subscription service information for each terminal, and policies such as billing. PCF (Policy Control Function) for managing/controlling data service, SMF (Session Management Function) for controlling/managing sessions for data service use by terminal, and NEF (Network Exposure Function) for information sharing with external networks ), UDM/AUSF (Unified Data Management / AUthentication Function) to manage/control user's subscriber DB and authentication, NRF (Network Repository Function) to manage/control information on each NF (Network Function) in the network , it can be defined as CHF (Charging Function) that handles subscriber's billing.

In 5G, the data node of the User Plane (UP) is a UPF (User Plane Function) that transmits and receives data between the terminal and the server on an external service network (eg the Internet) through a session with the terminal based on the control (interlocking) of the SMF. can be defined

In 5G, both the control node of the control plane and the data node of the user plane are called network functions.

As can be seen from FIG. 1 , in 5G, NFs that perform specific functions are defined, and interworking/connection between NFs is defined based on communication using SBI (Service Based Interface).

In addition, in 5G, an SCP (Service Communication Proxy) is newly defined so that NFs can process communication between various NF services communicating with SBI as a mesh structure.

SCP can be seen as acting as an 'SBI bus' in SBA (Service Based Architecture), that is, 5G Architecture, and is composed of a mesh structure that processes all SBI messages between NFs. The SBI message means a data packet including a header of an application layer such as HTTP, HTTP/2, and QUIC.

The SCP domain is the SCP Controller, which centrally controls the interworking between NF services in one SBA Cluster, the Service Mesh network, and the NF service is configured as a Service Mesh network for each of the multiple NF services configured in the SBA Cluster. It can be divided into a number of service agents that enable communication/interworking with incoming and other NF services.

As such, SCP is an NF specialized in Mesh Routing processing that processes communication between NF services by delivering SBI messages through Service Mesh.

In particular, the Service Agent of SCP receives and processes the Rule that determines the route between the NF services from the SCP Controller. This Rule is a rule on which target NF service (destination) should be sent the SBI message according to the service name of the NF in the SBI message.

According to this rule, the Service Agent delivers the SBI message of the NF service to the specified path to ‘proxy’ the delivery of the NF service.

As such, the SCP Service Agent is a very important and core SCP component that connects the inside/outside of the Service Mesh network.

On the other hand, the SBI message is an HTTP- and String-based message, and the size of the message is inevitably larger than that of the existing one. As a result, the processing/transmission load of the Service Mesh network increases, and as a result, delay/jitter (Latency/Jitter) and retransmission occur depending on the processing/transmission load of the Service Mesh network. can only happen

In this regard, FIG. 2 shows a situation in which a signaling (SBI message) processing delay occurs in the existing SCP.

In FIG. 2, as an example of communication between NF services, a call flow of communication/interworking between NF services between AMF and SMF is assumed and illustrated.

As shown in FIG. 2 , when the AMF Service Agent receives and transmits the AMF SBI message to the Service Mesh network, the incoming SBI message is received by the SMF Service Agent through the Service Mesh network and delivered to the SMF. The SBI message transmitted from SMF to AMF is also transmitted through the Service Mesh network as in the above process.

At this time, as mentioned above, since the SBI message has a relatively large size, the signaling (SBI message) processing in the SCP is inevitably delayed according to the processing/transmission load of the Service Mesh network.

In particular, considering that the amount of SBI messages that must be processed in SCP is rapidly increasing as the number of NF services (NF/Pod) increases, a technology that can quickly process/deliver large-size signaling (SBI messages) in SCP must be need.

However, in the current standard, there is no specific technique for quickly processing a relatively large SBI message in the SCP.

Accordingly, in the present invention, it is intended to dramatically improve the signaling (SBI message) processing delay in the SCP through a detailed technical proposal for quickly processing a relatively large SBI message in the SCP.

In this regard, FIG. 3 shows a situation in which the signaling (SBI message) processing delay in the SCP is improved when the proposed technology of the present invention is applied to dramatically improve the signaling (SBI message) processing delay in the SCP.

In FIG. 3 , as an example of communication between NF services, a call flow of communication/interworking between NF services between AMF and SMF is assumed and illustrated.

As shown in Fig. 3, in the present invention, the Service Agent of AMF (Consumer NF) performs the SBI message change operation to reduce the message size, transmits it to the Service Mesh network, and receives the SBI message through the Service Mesh network. The service agent of one SMF (Producer NF) can restore the message size by performing the SBI message restoration operation and then deliver it to the SMF (Producer NF). The SBI message transmitted from the SMF to the AMF can also be delivered through the Service Mesh network based on the SBI message change operation/restoration operation as in the above process.

In particular, in the present invention, by quickly determining the non-flowing message content and changing (reducing) only the corresponding content during the SBI message change operation, the SBI message processing within the SCP (Service Mesh network) is speeded up while maintaining excellent communication reliability between NF services. make it possible

As such, in the present invention, due to the fact that the SBI message has a lot of similar or overlapping illiquidity content, the size of the message is reduced by analyzing the fluidity / illiquidity of the SBI message and changing the message content of the illiquidity. There is a key to realizing a detailed technology for quickly processing SBI messages (hereinafter, message change/restore technology).

Hereinafter, an NF service interworking support device and a message controller device for realizing the proposed technique of the present invention, that is, the message change/restore technique, schematically described with reference to FIG. 3 in the above, will be described in detail.

First, a configuration of an NF service interworking support apparatus according to an embodiment of the present invention will be described with reference to FIG. 4 .

In this case, the NF service interworking support apparatus 100 proposed by the present invention may correspond to a Service Agent in the SCP Domain.

Each NF/NF service may be an NF (hereinafter, Consumer NF) position that requests an NF service, or an NF (hereinafter, a Producer NF) that receives and processes/responses the requested NF Service.

In the NF service interworking support device 100 proposed in the present invention, since the Service Agent is configured for each NF/NF service in the SCP Domain, it may correspond to the Service Agent of the Consumer NF side, or the Service Agent of the Producer NF side. may be applicable.

However, in FIG. 4 , one of the NF service interworking support apparatuses 100 of both NF services (NFs) communicating with each other will be classified as a first Service Agent and the remaining one will be described as a second Service Agent.

Accordingly, in FIG. 4 , each component is illustrated only in the first service agent 100 for simplicity of illustration, but the same components are also configured in the second service agent 100 .

As shown in FIG. 4 , the NF service interworking support apparatus 100 according to an embodiment of the present invention (first/second service agent) includes a change operation performing unit 110 and a communication unit 120 . may be, and further may further include a reporting unit 130 .

That is, the NF service interworking support apparatus 100 (first/second service agent) according to an embodiment of the present invention is a proposed technology of the present invention, that is, a message change/restore technology, which has been outlined above through each of the above-described components. can be realized

Hereinafter, each component constituting the NF service interworking support apparatus 100 (first/second service agent) will be described in detail.

Prior to the detailed description, for convenience of explanation, it is assumed that the NF of the first Service Agent is a Consumer NF (hereinafter, the first NF) and the NF of the second Service Agent is a Producer NF (hereinafter, the second NF). It will be described by referring to the first Service Agent as the NF service interworking support device 100 of the present invention.

For reference, in the present invention, the Service Agent may be loaded into the NF itself in the form of a module.

The change operation performing unit 110, in the first service agent of the first NF, receives the SBI message of the first NF and performs a message change operation of reducing the size of the SBI message.

Specifically, the change operation performing unit 110 classifies a message change target message among the SBI messages received from the first NF on the basis of a preset change control rule, and places a change target part in the classified SBI message. A message change operation to reduce the size may be performed.

More specifically, in the NF service interworking support apparatus 100 of the present invention, that is, the first Service Agent, the SBI message is received from the first NF, for example, a 5G Network Function (NF) composed of a VM and Container/Pod, and the SCP ( The SBI message delivered through the Service Mesh network) is transmitted to the first NF.

In the NF service interworking support apparatus 100 of the present invention, that is, the first Service Agent, in the transmission/reception process with the first NF, the SBI message buffer/queue can be used, and the speed for input/output such as TPS can be measured together. may be

In the NF service interworking support apparatus 100 of the present invention, that is, the first service agent (in particular, the change operation performing unit 110), a message change to reduce the size of the SBI message received from the first NF based on the change control rule perform the action

In this case, the change control rule used as a reference may be information received and set from a message controller (hereinafter referred to as SBI Message Repo) of the present invention, which will be described later.

Specifically, the message controller of the present invention, that is, the SBI Message Repo, which will be described later, specifies a non-flowing SBI message or a part within the SBI message through analysis of SBI messages transmitted and received through the Service Mesh network, and selects a specific SBI message or a part within the SBI message. A change table can be created that can be changed to reduce the size of the SBI message.

The message controller of the present invention, that is, SBI Message Repo, which will be described later, may be the same as the SCP Controller or may have a separate configuration. However, below, for convenience of explanation, it is assumed that the SBI Message Repo has the same configuration as that of the SCP Controller.

This SBI Message Repo can selectively deliver/set change control rules to each Service Agent connected to the Service Mesh network based on the change table created as described above.

Accordingly, in the NF service interworking support apparatus 100 of the present invention, that is, the first Service Agent (in particular, the change operation performing unit 110), based on the change control rule selectively delivered/set to the first Service Agent, Classify/specify which SBI message (part within the message) to change among the SBI messages received from the first NF, determine how to change the classified/specific SBI message (part within the message) to reduce the message size, and accordingly To perform a message change operation.

The communication unit 120, in the first Service Agent of the first NF, performs a message change operation in the change operation performing unit 110 to transmit a change SBI message, which is reduced in size, to the Service Mesh network, and through the Service Mesh network, the It is responsible for the function of allowing the change SBI message to be received by the second Service Agent of the second NF, that is, the NF service interworking support apparatus 100 .

The communication unit 120 transmits the SBI message of the NF service to a predetermined path according to the rule provided from the SCP Controller in the first Service Agent, and the service agent's existing mesh transmission/reception function and are identical or correspond to each other.

That is, in the NF service interworking support device 100 of the present invention, that is, the first Service Agent (especially, the communication unit 120), according to the rule provided from the SCP Controller, the changed SBI message is determined through the Service Mesh network. It processes the delivery of the corresponding NF service, which is transmitted through the path to be received by the second Service Agent of the second NF, that is, the NF service interworking support device 100 .

In this case, the NF service interworking support apparatus 100 of the present invention, that is, the first Service Agent, when transmitting the changed SBI message, may display and transmit an identifier (Indication) that can identify the changed message.

Of course, in the NF service interworking support apparatus 100 of the present invention, that is, the first Service Agent (in particular, the communication unit 120), the SBI message for which the message change operation is not performed by the change operation performing unit 110 is also a rule (Rule) ), it is possible to process the delivery of the corresponding NF service by delivering it through a predetermined path through the Service Mesh network.

Hereinafter, the message change operation performed by the NF service interworking support apparatus 100 of the present invention, that is, the first service agent (in particular, the change operation performing unit 110) will be described in more detail.

As mentioned above, the change operation performing unit 110, based on the change control rule selectively delivered/set from the SBI Message Repo to the first service agent, any SBI message among the SBI messages received from the first NF. Classify/specify whether to change (part within the message), identify how to reduce the message size by changing the classification/specific SBI message (part within the message) (eg, change algorithm), and perform message change action accordingly. can

Specifically, the change control rule includes priority information related to the size change rate of the message, classification information for classifying a change algorithm that reduces or restores the size of an SBI message, a part of a change target in the SBI message, and a change in the SBI message. It may be configured to include at least one of change information to which code information to replace the part is mapped.

For example, FIG. 6 shows an example of analyzing the liquidity/non-liquidity part in the SBI message (eg, Request) in the present invention.

6 shows the contents of an SBI message (eg, Request) in which the SMF NF requests a service to the PCF NF.

As can be seen in FIG. 6 , looking at the PCF policy according to most sessions, most of the contents requested in the SBI message transmitted while the SMF queries the PCF are 'same'/'repeated'.

That is, the parts in the range (B) of the SBI message content of FIG. 6 are 'same'/'repeated' parts in the same type of SBI message, that is, non-moving parts. This is the part where 'manipulation' to reduce is possible.

And in the SBI message content of FIG. 6, the parts in the range (A) are dynamic parts that cannot be considered to be the same '/'repeated', and can be changed at any time, that is, the subscriber's SUPI (IMSI), phone number, It contains the URI and uuid of the service request as PCF.

Lastly, the parts in the range (C) in the SBI message content of FIG. 6 may or may not be changed flexibly depending on the characteristics of the operator, time, and the mobility of the terminal.

Therefore, in the present invention, it is necessary to perform a message change operation only on the non-flowing part of the SBI message (eg, (B) range). can

The priority information in the change control rule is information related to the size change rate of the SBI message mentioned above, and indicates how much the 'same'/'repeated' part, that is, the non-moving part, is included in the SBI message. , it can be defined as a kind of label indicating floating/non-flowing, or priority.

For example, as follows, a priority number (or ID) may be defined to classify illiquidity probabilities and indicate each classified probabilities.

Priority (Label/Priority): 1 = (eg (B) range) (95% probability of illiquidity)

Priority (Label/Priority): 2 times = (Example: (C) range) (80% illiquidity probability)

Priority (Label/Priority): … .

Priority (Label/Priority): 10 times = (Example: (A) range) (10% probability of illiquidity)

In addition, such priority information is analyzed by the SBI Message Repo (SCP Controller) of the present invention through the Service Mesh network to analyze SBI messages (eg, continuous close-loop feedback/monitoring, success/failure, etc. statistical probability index calculation etc.), it is possible to specify the floating/non-current part for each SBI message and determine the proportion of the non-current part in the SBI message.

The classification information in the change control rule is information for classifying the change algorithm that reduces or restores the size of the SBI message, that is, ‘Manipulation’, and can be defined as “Repo ID”.

The change information in the change control rule is information to which the part of the change target in the SBI message and code information to replace the part in the SBI message are mapped. In this case, the code information to replace the part of the change target in the SBI message may be in the form of 'String' or in the form of ASCII, Binary, Code, or the like.

Hereinafter, with reference to FIG. 5 , the NF service interworking support apparatus 100 of the present invention, that is, a message controller according to an embodiment of the present invention that sets the aforementioned change control rule in each Service Agent including the first Service Agent (200), that is, the configuration of the SBI Message Repo will be described.

At this time, the message controller 200 proposed by the present invention may correspond to the SCP Controller in the SCP Domain.

As shown in FIG. 5 , the message controller 200 , that is, the SBI Message Repo of the present invention, includes a table generation unit 210 and an Agent control unit 220 .

Table generation unit 210, through the analysis of SBI messages transmitted and received through the Service Mesh network that handles communication between NF services, specify a part in the non-flowing SBI message and change the part in the specific message to reduce the message size Responsible for creating change tables.

More specifically, the message controller 200 of the present invention, that is, the SBI Message Repo, receives all SBI message information (Service Name, ...) and String (Regex, etc.) for all SBI messages included in 5G SA and Beyond 5G. It can include or link with the SBI message DB that holds the SBI message that it has or that is specified from the Service Mesh network.

Accordingly, the table generation unit 210 analyzes SBI messages transmitted and received through the Service Mesh network based on the SBI message DB (eg, continuous close-loop feedback / monitoring, calculation of statistical probability indicators such as success/failure, etc.) can be performed periodically.

Accordingly, the table generation unit 210 generates a change table based on statistical information about which SBI message has liquidity, and with what probability, which SBI message has liquidity, through the above analysis operation. can do.

For example, the table generating unit 210 may specify a floating/non-flowing part for each SBI message, and may determine the priority information based on the ratio of the non-fluid part in the SBI message.

This priority information is information related to the ratio in the SBI message to the 'same' / 'repeated' part of the SBI message mentioned above, that is, the non-current part. can do.

For example, as follows, a priority number (or ID) may be defined to classify illiquidity probabilities and indicate each classified probabilities.

Priority (Label/Priority): 1 = (eg (B) range) (95% probability of illiquidity)

Priority (Label/Priority): 2 times = (Example: (C) range) (80% illiquidity probability)

Priority (Label/Priority): … .

Priority (Label/Priority): 10 times = (Example: (A) range) (10% probability of illiquidity)

In addition, the table generating unit 210, the change information to which the change target part (non-fluid part) in the SBI message and code information to replace the corresponding part in the SBI message is mapped, the change algorithm to which this change information is applied, that is, ' Identification information ("Repo ID") for classifying 'Manipulation' can be determined.

Accordingly, the message controller 200 of the present invention, that is, the SBI Message Repo (in particular, the table generation unit 210), creates a change table that can be defined as shown in FIG. 7 and periodically updates and manages the mesh at all times. Real-time can be maintained according to the network and NF service communication status.

In FIG. 7, as a part (non-flowing part) of the change target in the SBI message of change information, the NF (Consumer NF Type / Producer NF Type) Service Name, Service Operation, and Attribute Name are specified as a Service Name, Service Operation, and Attribute Name, and code information to replace the corresponding part. Manipulation Data is specified as

As described above, the change table generated in the present invention is composed of values for the SBI message - Code (code information) that are actually mapped, and the configured information is delivered to each service agent in the form of a change control rule. In addition, the change table and the change control rules according to it may be changed in real time according to the service mesh network and NF service communication status at all times.

The agent control unit 220 sets a change control rule for each service agent connected to the service mesh network based on the change table described above, and reduces the size of the SBI message according to the change control rule set by each service agent. It is responsible for a function that enables a restoration operation to restore the size.

Specifically, the agent control unit 220 may set a change control rule selectively configured based on a change table for each service agent connected to the service mesh network.

At this time, the form of the change control rule configured by the agent control unit 220 based on the change table is the same as the form of the change control rule used as a reference when the message change operation is performed by the above-described change operation performing unit 110 .

In addition, the agent control unit 220 may transmit/set the entire change control rule based on the change table to each service agent connected to the service mesh network, and select only the information required by the service agent for each service agent. /Can transmit/set the configured change control rule.

Accordingly, the change control rule set for a specific service agent among each service agent connected to the service mesh network may include change information selected for the type of message that a specific service agent communicates with other service agents based on the change table. can

More specifically, the change control rule set in a specific service agent may be configured in pairs of a sending message and a receiving message for each type of message that a specific service agent communicates with other service agents.

Such a pair unit may be defined based on a mapping of request / response, subscription / notification types.

For example, the agent control unit 220 includes, for each service agent, change information on N pairs of messages required for communication between peer services (eg, AMF Service 1 <-> SMF Service 2) in pairs. It is possible to selectively/configure change control rules to be delivered/set to the corresponding service agent.

And, the message controller 200, that is, the SBI Message Repo (in particular, the Agent control unit 220) of the present invention, while setting the change control rule for each Service Agent, a certain priority information (Proc. ID), a certain change algorithm, that is, You can instruct/instruct it to use the Repo ID.

8 is a table as an example of which message change operation, i.e., which Manipulation (Proc. ID/Repo ID) can be applied for each Service Agent by selectively/configuring change control rules for each Service Agent of each NF in the present invention ( Combination Metric Table).

As such, the message controller 200 of the present invention, that is, the SBI Message Repo, does not need to share the entire change table with the service agent. Service Agent configures only necessary information and can selectively issue change control rules.

As in the combination metric table shown in FIG. 8 , when a specific NF Service -> a specific NF Service is transmitted, the detailed service Msg type (Operation, Attribute) can be known. Since this pair operation is included in the SBI Message Repo, the service agent can see the look-up table and process it immediately when communicating between NFs.

For reference, this combination metric table example is Proc.1,… , Proc. It is for determining the priority of N and the like (ie, floating/non-flowing).

For example, Proc.1 may be Manipulation on, and Proc.2 may be Manipulation off.

In addition, the part to be adjusted according to priority may be determined according to time, per subscriber, per NW slice, and network state. For example, priorities from Proc.1 to 3 can be applied to a specific Busy-Hour, and only Priority Proc.1 can be applied to Non-Busy-Hour, so that the load and NF of the SBI Mesh network are properly balanced can do.

Again, referring to the message change operation performed in the present invention, the change operation performing unit 110 includes the change control rule (Proc. ID/Repo ID) set and indicated by the aforementioned change control rule, that is, the SBI Message Repo. Analyzes the contents of the SBI message based on

Specifically, the change operation performing unit 110, since the SBI message is composed of a layered hierarchy such as Service Name, Service Operation, Attribute Name, etc., Service Name, Service Operation, Attribute Name specified in the change information in the change control rule described above. can be used to analyze the contents of the SBI message to determine whether the corresponding SBI message is a change target message, and if it is a change target message, which part is the change target part in the message.

The change operation performing unit 110, for the previously classified/determined portion of the change target in the SBI message, a message change operation to reduce the size in such a way as to replace the portion with the code information mapped in the change information in the change control rule described above can be performed.

At this time, the change operation performing unit 110, after performing the message change operation, if the size of the changed SBI message and the previous (original) SBI message is the same or reduced to an expected level (eg, 5 KByte) or less, change SBI messages may not be used.

Alternatively, the change operation performing unit 110 may not use the changed SBI message if the delay in the processing process for obtaining the changed SBI message by performing the message change operation is longer than a certain time corresponding to the gain desired due to message reduction. may be

In addition, the change operation performing unit 110 changes the SBI message (size reduction) by applying all according to * / wildcard, etc. as needed, or changes only the list matching some Service Name, Operation, and Attribute (size reduction) ) can also be done.

Furthermore, when it is determined that the SBI message received through the Service Mesh network is the changed SBI message, the change operation performing unit 110 is configured to change the message performed by the service agent of the transmitting side that has transmitted the SBI change message. After performing a restoration operation of restoring the size of the changed SBI message by performing inversely, it can be transmitted to the first NF.

The NF service interworking support apparatus 100 of the present invention, that is, the first Service Agent, transmits the changed SBI message on which the message change operation has been performed or the SBI message on which the message change operation is not performed through the Service Mesh network, and then responds thereto SBI messages can be received through the Service Mesh network.

Alternatively, in the NF service interworking support device 100 of the present invention, that is, the first service agent, the SBI message delivered from the service agent (eg, the second service agent 100) of the NF (eg, the second NF) as the consumer NF. can be received through the Service Mesh network.

As such, when the NF service interworking support device 100 of the present invention, that is, the first Service Agent is in a position to receive the SBI message, the first Service Agent (in particular, the change operation performing unit 110) receives it through the Service Mesh network. It is determined whether the message to be made is a change SBI message.

For example, in the NF service interworking support apparatus 100 of the present invention, that is, the first service agent (in particular, the change operation performing unit 110), when an identifier indicating that the changed message is displayed in the received SBI message, the corresponding SBI message may be determined to be a changed SBI message.

And, in the NF service interworking support apparatus 100 of the present invention, that is, the first Service Agent (in particular, the change operation performing unit 110), when it is determined as the change SBI message, the service agent of the transmitting side that has transmitted the SBI change message (eg, the service agent 100 of the second NF) may reversely perform the message change operation to restore the size of the changed SBI message received this time, and then deliver it to the first NF.

In this way, in order to perform a restoration operation that restores the size of the changed SBI message received this time by reversing the message change operation performed by the service agent of the sending side (eg, the service agent 100 of the second NF), communication is performed It is assumed that the same selective/configured change control rules (Proc. ID/Repo ID) are set between Service Agents of NF.

Accordingly, the message restoration operation performed by the NF service interworking support apparatus 100 of the present invention, that is, the first service agent (in particular, the change operation performing unit 110) will be described as follows.

The change operation performing unit 110 classifies the change SBI message by using the Service Name, Service Operation, and Attribute Name specified in the change information in the above-described change control rule, and in the classified change SBI message, within the above-described change control rule. Find the code information part of the change information.

In addition, the change operation performing unit 110 restores the size / restores the message by replacing the code information part in the change SBI message with the message content part mapped with the code information in the change information in the change control rule described above. A restoration operation may be performed.

In this case, as mentioned in the description with reference to FIG. 3 , in the present invention, the WP1 Service Agent of the first NF performs the SBI message change operation to reduce the message size and then transmits it to the Service Mesh network, and the Service Mesh network The second service agent of the second NF that has received the SBI message through the SBI message restore operation to restore the message size to its original size and then deliver it to the second NF.

Furthermore, the reporting unit 130 in the NF service interworking support apparatus 100 of the present invention, that is, the first Service Agent, constantly updates and manages the change table in the message controller 200, that is, the SBI Message Repo to maintain real-time. Responsible for reporting necessary information.

Specifically, the reporting unit 130 reports the communication result through the Service Mesh network with respect to the changed SBI message transmitted to the Service Mesh network to the message controller 200 ie SBI Message Repo, and the message controller 200 ie SBI Message Repo. Makes the communication result reported by the Repo available when updating the change table.

Accordingly, according to the present invention, the increase in the processing/transmission load of the Service Mesh network is dramatically reduced by reducing the size of the SBI message received/processed into the Service Mesh network and implementing a specific technology to restore it and restore it. It is possible to effectively avoid processing delays in signaling (SBI messages) within the SCP, such as delay/jitter and retransmission depending on the processing/transmission load of the network.

In particular, in the present invention, when SBI message change operation is performed, the non-flowing message content is quickly determined as a real-time standard (change table) and only the corresponding content is changed (reduced), thereby speeding up SBI message processing in SCP (Service Mesh network) and NF Inter-service communication reliability is maintained to be excellent.

As described above, according to the present invention, a detailed technique for quickly processing SBI messages in SCP is realized, such as reducing the size of messages through fluidity/non-fluidity analysis of SBI messages and changing message contents of illiquidity.

Accordingly, according to the present invention, through the realization of a detailed technology for quickly processing the SBI message in the SCP, the effect of remarkably improving the signaling (SBI message) processing delay in the SCP is derived.

Hereinafter, embodiments of call flow supported by the present invention will be described with reference to FIGS. 9 and 10 .

First, in the case of FIG. 9, when the proposed technology of the present invention is applied, the process of processing/transferring SBI messages from the SCP is shown.

9, as an example of communication between NF services, a call flow of communication/interworking between NF services between AMF and SMF is assumed and illustrated.

In the call-flow example shown in FIG. 9, an SBI message (hereinafter, origin SBI Msg A0) is sent from the NF, and it is changed to a smaller size (modified SBI Msg A1) and delivered to the target NF as an example. is showing The message change operation and restoration operation (not shown) of Call-Flow such as Io may consist of a SBI Request / Response pair combination or a Subscription / Notification pair combination.

9, when the first service agent 100' of the first NF (NF #1, eg, AMF) receives the SBI message (origin SBI Msg A0) of the AMF, based on the change control rule The origin SBI Msg A0 is reviewed/analyzed to separate (classify) whether the message is a target for change, and if it is a message for a change, change (modify) the message according to the change control rules.

To this end, the SBI Message Repo 200 creates and periodically updates/manages the aforementioned change table, and operates and restores message change (modification) operations for each service agent (eg, first, second service agent, etc.) Algorithm of operation, that is, Manipulation (Proc. ID/Repo ID) can be determined and transmitted/shared periodically.

On the other hand, the first Service Agent 100' of the first NF (NF #1, eg: AMF) performs a message change (modification) operation to service the SBI message (modified SBI Msg A1) changed to a smaller size. It is transmitted through the mesh network. In this case, the modified SBI Msg A1 may be transmitted by displaying an identifier for identifying the changed message.

The second service agent 100" of the second NF (NF #2, eg SMF) receiving the SBI message (modified SBI Msg A1) through the service mesh network (Mesh Routing) is received based on the change control rule By reviewing/analyzing one SBI message to separate (classify) whether it is a changed message with an identifier (Indication) displayed, and if it is a changed message (modified SBI Msg A1), the message restoration (modification) operation is performed according to the criteria of the change control rule. Restores the size of the SBI message.

And, the second service agent 100" of the second NF (NF #2, eg: SMF) converts the size-restored SBI message (origin SBI Msg A0) to the second NF (NF #2, eg: SMF). can transmit

Hereinafter, with reference to FIG. 10, the flow of the NF service interworking support method (operation of the service agent) and the operation method of the message controller (SBI Message Repo) according to an embodiment of the present invention will be described.

In the overall flowchart, steps S10 to S20 correspond to the operation of the first service agent of the NF (first NF) transmitting the SBI message, and steps S22 to S27 are the second steps of the NF (second NF) receiving the SBI message It corresponds to the operation of the Service Agent, and steps S28 to S30 correspond to the operation of the SBI Message Repo.

According to the present invention, when the first Service Agent of the first NF receives an SBI message from the 5G NF, that is, the first NF to which it is connected (S10), it performs a specific condition trigger and message classification based on the change control rule to perform this SBI It can be determined whether the message is a message requiring manipulation, that is, a target of a message change operation (S12, S14).

Here, the specific condition of the trigger may be defined as follows within the SBI message or based on the subscriber profile.

State-based trigger for a specific terminal session

Triggering when entering/exiting a specific area for a terminal (eg, triggering when a subscriber performs handover)

Trigger at specific control event

QoS status of the terminal, RAT information (frequency, RAT, base station name, etc.) of the terminal, the performance of the terminal (Throughput, Latency, Jitter ) information (eg, Radio Resource Block, RB) based on Trigger

Trigger based on SBI message type (eg Service Name, Service Operation, Attribute Name)

Trigger based on specific time and network status determined by SBI Message Repo

Trigger based on specific SBI message (flow/non-flow confirmation)

Trigger according to the time required for manipulating a specific SBI message, or the expected size when reducing and the time it takes between agents to transmit.

According to the present invention, the first Service Agent of the first NF, when it is determined that the current SBI message is a message that does not require manipulation (S14 No), transfers the current SBI message (origin SBI Msg A0) to the Service Mesh network as before. forwarded/transmitted to (S19, S20).

On the other hand, according to the present invention, the first Service Agent of the first NF, when it is determined that this SBI message is a message that requires manipulation (S14 Yes), performs the manipulation according to the standard of the change control rule to perform the manipulation of this SBI message (origin SBI Msg A0) is changed to a smaller size SBI message (modified SBI Msg A1) (S16). In this case, the modified SBI Msg A1 may be transmitted by displaying an identifier for identifying the changed message.

Here, according to the present invention, the first Service Agent of the first NF, whether successful processing as SBI Msg A1, whether the changed SBI Msg A1 is smaller than the expected level (eg 10 KByte) than the origin SBI Msg A0, SBI Msg A1 It can be determined whether the condition related to the manipulation performance is satisfied, such as whether the delay of the processing process for obtaining is less than a certain time (S18), and when dissatisfied, the SBI Msg A1 may not be used (S19, S20).

According to the present invention, the first Service Agent of the first NF transmits/transmits the changed SBI mesh (SBI Msg A1) to the Service Mesh network, and the SBI message is transmitted through the Service Mesh network (Mesh Routing) of the second NF. 2 Arrive at the service agent (S20).

According to the present invention, the second Service Agent of the second NF determines whether the current SBI message is a manipulated modified SBI message (SBI Msg A1) based on the change control rule, that is, an SBI message with an identifier (SBI Msg A1). It is determined (S22).

According to the present invention, when the second service agent of the second NF is a changed SBI message (SBI Msg A1) (S22 Yes), it performs a message restoration (modification) operation according to the standard of the change control rule to originate the SBI Msg A1. A change/modification is performed to restore the SBI Msg AO (S24).

And, according to the present invention, the second service agent of the second NF may transmit the size-restored SBI message (SBI Msg A0) to the 5G NF to which it is connected, that is, the second NF (S26).

Furthermore, according to the present invention, the second service agent of the second NF may report the communication result for the manipulated modified SBI message (SBI Msg A1) to the SBI Message Repo (S27).

Accordingly, according to the present invention, the SBI Message Repo provides information on communication results from each Service Agent including the aforementioned second Service Agent, for example, E2E progress results between Service Agents and NFs (delay time, speed, message size, success rate/ failure rate), etc. may be received/inputted (S28).

According to the present invention, the SBI Message Repo can select information to be used later among the information input through the report as described above (S29), and reflect the selection information in statistics when generating a change table or use it to determine the priority of the manipulation. By using it for periodic update, real-time performance can be maintained according to the status of the mesh network and NF service communication at all times (S30).

As described above, according to the present invention, a detailed technique for quickly processing SBI messages in SCP is realized, such as reducing the size of messages through fluidity/non-fluidity analysis of SBI messages and changing message contents of illiquidity.

Accordingly, according to the present invention, through the realization of a detailed technology for quickly processing the SBI message in the SCP, the effect of remarkably improving the signaling (SBI message) processing delay in the SCP is derived.

The NF service interworking support method according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

Although the present invention has been described in detail with reference to preferred embodiments so far, the present invention is not limited to the above-described embodiments, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the claims below It will be said that the technical spirit of the present invention extends to a range where various modifications or modifications can be made by anyone with ordinary knowledge in the present invention.

According to the NF service interworking support apparatus and NF service interworking support method according to the present invention, in terms of realizing a detailed technology for quickly processing SBI messages in SCP, the use of related technologies as it goes beyond the limits of existing technologies It is an invention that has industrial applicability because it has sufficient potential for marketing or business of the applied device, but also to the extent that it can be clearly implemented in reality.

100: NF service interworking support device
110: change operation performing unit 120: communication unit
130: report department

Claims (11)

a change operation performing unit for receiving the message of the first NF in the first service agent of the first NF and performing a message change operation for reducing the size of the message; and
The first Service Agent of the first NF performs the message change operation and transmits the change message, which is reduced in size, to the Service Mesh network, and the change message is received by the second Service Agent of the second NF through the Service Mesh network. NF service interworking support device, characterized in that it comprises a communication unit to be enabled. The method of claim 1,
The change operation performing unit,
NF service interworking support device, characterized in that based on a preset change control rule, a message of a message change target among received messages is classified, and a message change operation of reducing the size of a part of a change target in the classified message is performed . The method of claim 1,
The change control rule is
By analyzing the message transmitted and received through the Service Mesh network, the message controller specifies a non-flowing message or a part in the message and creates a change table to reduce the size of the message by changing the specific message or part in the message, NF service interworking support device, characterized in that set based on the table. 4. The method of claim 3,
A reporting unit for reporting the communication result through the Service Mesh network to the message controller for the change message transmitted to the Service Mesh network so that the message controller can use the communication result reported when updating the change table NF service interworking support device, characterized in that it comprises. The method of claim 1,
The change operation performing unit,
When it is determined that the message received through the Service Mesh network is the change message, a restoration operation of restoring the size of the change message by reversely performing the message change operation performed by the service agent of the transmitting side that transmitted the change message NF service interworking support device, characterized in that it is transmitted to the first NF after performing. a table generation unit that generates a change table to reduce the message size by specifying a non-moving message portion and changing a specific message portion through message analysis transmitted and received through a Service Mesh network that processes communication between NF services; and
Based on the change table, a change control rule is set for each service agent connected to the service mesh network, and a message change operation to reduce the size of the message or a restoration operation to restore the size according to the change control rule set by each service agent A message controller device comprising an Agent control unit to enable execution. 7. The method of claim 6,
The agent control unit,
For each Service Agent connected to the Service Mesh network, a change control rule selectively configured based on the change table is set,
The optionally configured change control rule comprises:
Priority information related to the rate of change in the size of the message, identification information to distinguish a change algorithm that reduces or restores the size of the message, the part of the change target in the message, and the change in which code information to replace the part in the message is mapped A message controller device comprising at least one of information. 8. The method of claim 7,
The change control rule set for a specific Service Agent among each Service Agent connected to the Service Mesh network is,
and, based on the change table, change information selected for a message type that the specific service agent communicates with other service agents based on the change table. 9. The method of claim 8,
Change information of the change control rule set in the specific service agent,
A message controller device, characterized in that, for each type of message the specific service agent communicates with other service agents, it is configured in pairs of a transmission message and a reception message. a changing operation performing step of receiving the message of the first NF and performing a message changing operation of reducing the size of the message in the first service agent of the first NF; and
The first Service Agent of the first NF performs the message change operation and transmits the change message, which is reduced in size, to the Service Mesh network, and the change message is received by the second Service Agent of the second NF through the Service Mesh network. NF service interworking support method, characterized in that it includes a communication step to make it possible. A table creation step of generating a change table to reduce the message size by specifying a non-moving message part through message analysis transmitted and received through a Service Mesh network that processes communication between NF services and changing a specific message part; and
Based on the change table, a change control rule is set for each service agent connected to the service mesh network, and a message change operation to reduce the size of the message or a restoration operation to restore the size according to the change control rule set by each service agent Method of operation of the message controller, characterized in that it comprises the agent control step to be able to perform.

Images