CN114845350A - Routing method and device - Google Patents

Abstract

The embodiments of the present application disclose a routing method and device. After the terminal in the present application successfully registers with the local IMS system, it can obtain the first routing rule for instructing the terminal to access the local IMS system. The second routing rule of the network IMS system, and then for the call service to be executed in the terminal, if the target number in the call service matches the first type number segment information in the first routing rule, the above-mentioned first PDU can be used. The call service is executed by the session. If the above-mentioned target number matches the second type number segment information in the second routing rule, the call service can be executed through the second PDU session associated with the public network IMS system, based on the above-mentioned execution of the local data network. The first PDU session of the internal call service only passes through the local data network, which avoids the leakage of private data in the call service.

Description

A routing method and device

technical field

The present application relates to the field of communications, and in particular, to a routing method and device.

Background technique

In the communication network system, the communication network can be divided into a public data network (referred to as a public network) and a local data network (also known as an enterprise data network) built by an enterprise. When registering in the data network, it will simultaneously register with the public network IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) system of the public network data network and the local IMS system of the local data network. The internal call service of the network will pass through the public network, resulting in the leakage of data that requires privacy, such as enterprise data (such as call data such as voice, video and other call data in the call service).

SUMMARY OF THE INVENTION

The present application discloses a routing method, device and device to avoid leakage of privacy data in a local data network when a UE performs a call service.

According to a first aspect of the embodiments of the present application, a routing method is provided, and the method is applied to a terminal, including:

After learning that the terminal has successfully registered with the local IP Multimedia Subsystem IMS system to which the terminal belongs, obtain a first routing rule for instructing the terminal to access the local IMS system, where the first routing rule at least includes the local IMS system and the mapping relationship between the number segment information of the first type, where the number segment information of the first type includes the number segment allocated by the local IMS system;

After learning that the terminal has successfully registered with the public network IMS system, obtain a second routing rule for instructing the terminal to access the public network IMS system, where the second routing rule includes at least the public network IMS system and the second type of routing rules. The mapping relationship between the number segment information, the second type of number segment information includes the number segment allocated by the public network IMS system;

For the call service to be executed, if the target number in the call service matches the first type number segment information in the first routing rule, the local IMS system will be associated with the 5G core network device through the association The first protocol data unit PDU session of the first protocol data unit PDU session executes the call service; if the target number in the call service matches the second type number segment information in the second routing rule, the call service is established by establishing a relationship with the 5G core network device. The second PDU session associated with the public network IMS system executes the call service.

According to a second aspect of the embodiments of the present application, a routing method is provided, and the method is applied to 5G core network equipment, including:

After learning that the terminal has successfully registered with the local IP multimedia subsystem IMS system to which the terminal belongs, a first routing rule for instructing the terminal to access the local IMS system is delivered to the terminal, where the first routing rule at least includes the The mapping relationship between the local IMS system and the first-type number segment information, where the first-type number segment information includes the number segment allocated by the local IMS system;

After learning that the terminal has successfully registered with the public network IMS system, issue a second routing rule to the terminal for instructing the terminal to access the public network IMS system, where the second routing rule at least includes the public network IMS system The mapping relationship between the system and the second type number segment information, where the second type number segment information includes the number segment allocated by the public network IMS system;

The first routing rule is used to instruct the terminal to communicate with the 5G core network device when the target number in the call service executed by the terminal matches the first type of information in the first routing rule The first protocol data unit PDU session established between the local IMS system and associated with the local IMS system executes the call service;

The second routing rule is used to instruct the terminal to pass between the terminal and the 5G core network device when the target number in the call service executed by the terminal matches the second type number segment information in the second routing rule. The established second PDU session associated with the public network IMS system executes the call service.

According to a third aspect of the embodiments of the present application, a routing device is provided, and the device is applied to a terminal, including:

The first routing rule obtaining unit is configured to obtain a first routing rule for instructing the terminal to access the local IMS system after learning that the terminal has successfully registered with the local IP Multimedia Subsystem IMS system to which the terminal belongs. The routing rule includes at least a mapping relationship between the local IMS system and first type number segment information, where the first type number segment information includes the number segment allocated by the local IMS system;

The second routing rule obtaining unit is configured to obtain a second routing rule for instructing the terminal to access the public network IMS system after learning that the terminal has successfully registered with the public network IMS system, where the second routing rule at least includes all the mapping relationship between the public network IMS system and the second type number segment information, where the second type number segment information includes the number segment allocated by the public network IMS system;

The call service execution unit is configured to, for the call service to be executed, if the target number in the call service matches the first type number segment information in the first routing rule, establish a connection with the 5G core network device. The first protocol data unit PDU session associated with the local IMS system executes the call service; if the target number in the call service matches the second type number segment information in the second routing rule, the The call service is executed in the second PDU session associated with the public network IMS system established between the 5G core network devices.

According to a fourth aspect of the embodiments of the present application, a routing device is provided, and the device is applied to 5G core network equipment, including:

a first routing rule issuing unit, configured to issue a first routing rule for instructing the terminal to access the local IMS system to the terminal after learning that the terminal has successfully registered with the local IP multimedia subsystem IMS system to which the terminal belongs, The first routing rule includes at least the mapping relationship between the local IMS system and the first type of number segment information, where the first type of number segment information includes the number segment allocated by the local IMS system;

The second routing rule issuing unit is configured to issue a second routing rule to the terminal for instructing the terminal to access the public network IMS system after learning that the terminal has successfully registered with the public network IMS system, the first routing rule issuing unit. The second routing rule includes at least the mapping relationship between the public network IMS system and the second type number segment information, and the second type number segment information includes the number segment allocated by the public network IMS system;

The first routing rule is used to instruct the terminal to communicate with the 5G core network device when the target number in the call service executed by the terminal matches the first type of information in the first routing rule The first protocol data unit PDU session established between the local IMS system and associated with the local IMS system executes the call service;

The second routing rule is used to instruct the terminal to pass between the terminal and the 5G core network device when the target number in the call service executed by the terminal matches the second type number segment information in the second routing rule. The established second PDU session associated with the public network IMS system executes the call service.

The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

As can be seen from the above technical solutions, after the terminal in the solution provided by the present application successfully registers with the local IMS system, it can obtain the first routing rule for instructing the terminal to access the local IMS system, and after the terminal successfully registers with the public network IMS system , the second routing rule for instructing the terminal to access the public network IMS system can be obtained, and then for the call service to be executed in the terminal, if the target number in the call service matches the first type of number segment information in the first routing rule (that is, the call service is an internal call service of the local data network), the call service can be executed through the first PDU session associated with the local IMS system, if the above-mentioned target number matches the second type number segment information in the second routing rule , the call service can be executed through the second PDU session associated with the public network IMS system, and the first PDU session based on the above-mentioned execution of the internal call service of the local data network only passes through the local data network, avoiding the call service in the local data network. Private data leakage.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not limiting of the present application.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with this specification and together with the description serve to explain the principles of this specification.

FIG. 1 is a scene diagram of a 5G communication system provided by an embodiment of the present application;

2 is a flowchart of a method for routing provided by an embodiment of the present application;

3 is a flowchart of another routing method provided by an embodiment of the present application;

4 is an interactive schematic diagram of a method for implementing routing provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a routing device provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of another apparatus for routing selection provided by an embodiment of the present application.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, such information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information without departing from the scope of the present application. Depending on the context, the word "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determining."

In order for those skilled in the art to better understand the technical solutions provided by the embodiments of the present application, and to make the above objectives, features, and advantages of the embodiments of the present application more obvious and understandable, the following briefly describes the scenarios to which the embodiments of the present application are applied. stated:

As an example, the application of the embodiment of the present application may be the 5G communication network system shown in FIG. 1 . The 5G communication network system includes a public data network (that is, the public network in FIG. 1 ) and at least one enterprise built Local data network (ie, the enterprise network in Figure 1). Wherein, the public network includes at least one public network IMS (IP MultimediaSubsystem, IP Multimedia Subsystem) system and a public network data center (that is, the DN of the public network in Figure 1, DataNetwork), and the enterprise network includes at least one local IMS system and one local data center.

Among them, the public network IMS system in the public network is used to implement multimedia calls between terminals registered in the public network IMS system (such as voice calls and video calls based on terminal numbers between terminals), and the public network data center uses It is used to manage the service data of services such as call services in the public network; the local IMS system in the enterprise network is used to implement multimedia calls between terminals registered in the local IMS system, and the local data center in the enterprise network is used for Manage the service data of services such as call services in the enterprise network.

As an embodiment, in the above-mentioned enterprise network, the enterprise applies to the operator for the establishment of a local data network. After the operator applies for the establishment of the local data network through the enterprise, the operator uses the base stations, cables, etc. used to build the public network. Hardware equipment, create a UPF (User Plane Function, user plane function) network element allocated to the local data network of the enterprise, and then build the local data network of the enterprise based on the newly created UPF network element. Optionally, the local data network built by the above-mentioned enterprise can be either a data network that a single enterprise applies to the operator for processing the internal business of the enterprise, or a data network that multiple enterprises with common services apply to the operator together. The data network used to handle the common service.

Based on the above 5G communication network system, if the user's terminal is an enterprise UE allocated by an enterprise to process internal services in the local data network, the enterprise UE needs to be registered in both the public network IMS system and the local IMS system to enable When the enterprise UE performs the call service, it can call not only other enterprise UEs registered in the local IMS system, but also other UEs registered in the public network IMS system. However, when the user uses the enterprise UE to make a call to other enterprise UEs registered in the local IMS system, since the user's enterprise UE is also registered in the public network, the call may pass through the public network IMS system, resulting in the call process. Call data breach.

Therefore, in order to ensure that when the user uses the enterprise UE to register other enterprise UEs in the local IMS system, it only passes through the local data network and does not pass through the public network, so as to avoid the leakage of call data during the call process, this embodiment provides a route selection method. The method ensures that when the enterprise UE registers other enterprise UE calls in the local IMS system, it only passes through the local data network, and when the enterprise UE registers other UE calls in the public network IMS system, it only passes through the public network.

The routing method provided by the embodiments of the present application will be described in further detail below with reference to the accompanying drawings. Referring to FIG. 2, FIG. 2 is a flowchart of a method for routing selection provided by an embodiment of the present application. As an embodiment, the process shown in FIG. 2 can be applied to terminals that can perform call services, such as smart phones, smart phone watches, and the like.

As shown in Figure 2, the process can include the following steps:

Step 201, after learning that the terminal has successfully registered with the local IMS system to which the terminal belongs, obtain a first routing rule for instructing the terminal to access the local IMS system.

Wherein, the first routing rule in the above step 201 includes at least the mapping relationship between the local IMS system and the first type of number segment information, where the first type of number segment information includes the number segment allocated by the local IMS system. As an embodiment, the number segment allocated by the local IMS system is a pre-designated enterprise network number segment, and the enterprise network number segment may be pre-divided by the operator for the public network and the enterprise network. In this embodiment, the local IMS system The allocated number segment may be an unused number segment found from the enterprise network number segment when the operator creates the local IMS system.

Step 202, after learning that the terminal has successfully registered with the public network IMS system, obtain a second routing rule for instructing the terminal to access the public network IMS system.

Wherein, the second routing rule in the above step 202 includes at least the mapping relationship between the public network IMS system and the second type number segment information, where the second type number segment information includes the number segment allocated by the public network IMS system. As an embodiment, the number segment allocated by the public network IMS system is a pre-designated public network number segment, and the public number segment may be pre-divided by the operator for the public network and the enterprise network. In this embodiment, the public network IMS system The allocated number segment may be an unused number segment found from the public network number segment when the operator creates the public network IMS system.

It should be noted that the reason why the terminal is required to successfully register with the local IMS system and the public network IMS system in the above steps 201 and 202 is to ensure that the terminal can normally perform the internal call service of the local data network in the local data network, and to ensure that the terminal can be successfully registered in the local data network. The call service can be performed normally in the public network data network.

As an embodiment, the terminal can register in the local IMS system through the following steps: send a SIP (Session Initiation Protocol, Session Initiation Protocol) registration request through the first PDU session with the 5G core network device, so that the 5G core network The device forwards the SIP registration request to the local IMS system to which the terminal belongs, so that the terminal successfully registers with the local IMS system.

In the embodiment of the present application, the first PDU session used by the above-mentioned terminal in the process of registering in the local IMS system is that the terminal sends a first PDU session establishment request to the 5G core network device when detecting the first PDU session establishment event built. In this embodiment, the first PDU session establishment request is used to instruct the 5G core network device to establish a first PDU session for association with the local IMS system between the terminal and the 5G core network device, and the first PDU session is used to transfer the terminal Communication with the local IMS system.

Optionally, in order to establish the connection between the terminal and the local IMS system, the network identifier of the local IMS system may be pre-configured in the terminal, so that the terminal automatically triggers the first PDU session establishment event based on the network identifier of the local IMS system after the terminal is powered on, After detecting the first PDU session establishment event, the terminal can send the first PDU session establishment request carrying the network identifier of the local IMS system to the 5G core network device, so that the 5G core network device can establish the first PDU associated with the local IMS system. session.

As an embodiment, the terminal can register in the public network IMS system through the following steps: send a SIP (Session Initiation Protocol, Session Initiation Protocol) registration request through the second PDU session with the 5G core network device, so that the 5G core The network device forwards the SIP registration request to the public network IMS system, so that the terminal successfully registers with the public network IMS system.

In the embodiment of the present application, the second PDU session used by the above-mentioned terminal in the process of registering in the public network IMS system is that the terminal sends the second PDU session establishment event to the 5G core network device when the second PDU session establishment event is detected. request created. In this embodiment, the second PDU session establishment request is used to instruct the 5G core network device to establish a second PDU session between the terminal and the 5G core network device for being associated with the public network IMS system, and the second PDU session is used for transferring Communication between the terminal and the public network IMS system.

Optionally, in order to establish the connection between the terminal and the public network IMS system, the network identifier of the public network IMS system can be pre-configured in the terminal, so that the terminal automatically triggers the second PDU session based on the network identifier of the public network IMS system after the terminal is powered on. Establishment event, after the terminal detects the second PDU session establishment event, it can send the second PDU session establishment request carrying the network identifier of the public network IMS system to the 5G core network device, so that the 5G core network device can establish and communicate with the public network IMS system. Associated second PDU session.

As an embodiment, based on the first PDU session and the second PDU session established with the 5G core network device in the foregoing embodiment, the first routing rule obtained in the foregoing step 201 for instructing the terminal to access the local IMS system can be obtained through the foregoing The first PDU session receives the first routing rule issued by the 5G core network device; in the above step 202, the second routing rule for instructing the terminal to access the public network IMS system is obtained, and the second PDU session can be used to receive the 5G core network device. the second routing rule. Optionally, in this embodiment, the acquisition of the first routing rule and the second routing rule can also be obtained by receiving the first routing rule and the second routing rule input from the outside. This application acquires the first routing rule and the second routing rule. The method is not limited.

Optionally, the number segment information in the foregoing embodiments may be recorded using a regular expression. For example, if the number segment information is recorded as 1380000[0-9]{4, 4}, it means that the first 7 digits of the number are 1380000, and the last 4 digits are 1380000. Each bit is a number segment of any number from 0 to 9.

Step 203, for the call service to be executed, when the target number in the call service matches the first type number segment information in the first routing rule, then pass the first link of the associated local IMS system established with the 5G core network device. A PDU session executes the call service; when the target number in the call service matches the second type number segment information in the second routing rule, the second type of number segment information in the associated public network IMS system established with the 5G core network device is passed through the second The PDU session executes the call service.

In a specific application, when the terminal receives an externally input call instruction to call a certain number, it is determined that there is a calling service to be executed in the terminal, and the above-mentioned certain number is the target number of the calling service to be executed.

As an embodiment, after determining that there is a call service to be executed in the terminal, the terminal can use the newly compiled number segment parsing function to parse the target number, and determine whether the destination number is related to the first type of number segment information in the first routing rule or Whether the second type number segment information in the second routing rule matches, if the target number matches the first type number segment information, it is determined that the target number is in the number segment allocated by the local IMS system, and the first type associated with the local IMS system is required. The PDU session executes the call service, and if the target number matches the second type number segment information, it is determined that the target number is in the number segment allocated by the public network IMS system, and the second PDU session associated with the public network IMS system is required to execute the call. business.

So far, the process shown in FIG. 2 is completed.

It can be seen from the process shown in FIG. 2 that, after the terminal in this embodiment successfully registers with the local IMS system, it can obtain the first routing rule for instructing the terminal to access the local IMS system. After the IMS system, the second routing rule for instructing the terminal to access the public network IMS system can be obtained, and then for the call service to be executed in the terminal, if the target number in the call service is the same as the first type number in the first routing rule If the segment information matches (that is, the call service is an internal call service of the local data network), the call service can be executed through the first PDU session associated with the local IMS system. If the segment information matches, the call service can be executed through the second PDU session associated with the public network IMS system. Based on the above, the first PDU session executing the internal call service of the local data network only passes through the local data network, avoiding the need for local data in the call service. Private data leakage in the network.

It should be noted that this embodiment of the present application does not limit the execution sequence between the above steps 201 and 202, and the execution sequence between the steps 201 and 202 is related to the acquisition time of the first routing rule and the acquisition time of the second routing rule Relatedly, if the first routing rule is obtained first, step 201 is executed first, and if the second routing rule is obtained first, step 202 is executed first.

The following briefly describes another route selection method embodiment provided by the embodiment of the present application. As shown in FIG. 3 , FIG. 3 is a flowchart of another routing method. As an embodiment, the process shown in FIG. 3 can be applied to 5G core network equipment, where the 5G core network equipment at least includes a PCF (Policy Control function, policy control function) network element used for policy control in the 5G core network, AMF (Access and Mobility Management Function, mobility management) network element, SMF (Session Management Function, session management) network element and, UPF (User Plane Function, user plane function) network element allocated to the local data network and allocated to the public network UPF network element.

As shown in Figure 3, the process can include the following steps:

Step 301: After learning that the terminal has successfully registered with the local IMS system to which the terminal belongs, a first routing rule for instructing the terminal to access the local IMS system is delivered to the terminal.

Step 302, after learning that the terminal has successfully registered with the public network IMS system, issue a second routing rule to the terminal for instructing the terminal to access the public network IMS system.

Wherein, the first routing rule issued to the terminal in the above step 301 is used when the target number in the call service executed by the terminal matches the first type of information in the first routing rule (that is, the target number is in the allocated area of the local IMS system). number segment), instructing the terminal to execute the call service through the first PDU session with the 5G core network device and associated with the local IMS system. The second routing rule issued to the terminal in the above step 302 is used when the target number in the call service performed by the terminal matches the second type of number segment information in the second routing rule (the target number is in the allocated area of the public network IMS system. number segment), instructing the terminal to execute the call service through the second PDU session with the 5G core network device and associated with the public network IMS system.

Optionally, the first routing rule in this embodiment is generated by the 5G core network device based on the number segment allocated to the local IMS system by the operator when building the local data network and the network identifier of the local IMS system, and the second routing rule is: The 5G core network equipment is generated based on the number segment allocated by the operator for the public network IMS system when building the public network and the network identifier of the public network IMS system.

Exemplarily, the operator in this embodiment may record the mapping relationship between the number segment allocated for the local IMS system and the network identifier of the local IMS system in the PCF network element when building the local data network. Record the mapping relationship between the number segment allocated to the public network IMS system and the network identifier of the public network IMS system. When the PCF network element learns that the terminal is successfully registered in the local IMS system and the public network IMS system, the PCF network element sends the terminal to the terminal. An extended URSP (UE Route Selection Policy, UE Route Selection Policy) is delivered, and the extended part of the extended URSP includes the first routing rule or the second routing rule.

As an embodiment, the 5G core network device in this embodiment can learn that the terminal has successfully registered with the local IMS system to which the terminal belongs by the following methods: when receiving a notification message of successful SIP registration sent by the local IMS system through the first PDU session , to learn that the terminal has successfully registered with the local IMS system to which the terminal belongs. The 5G core network device in this embodiment can learn that the terminal has successfully registered with the public network IMS system in the following manner: when receiving a notification message of successful SIP registration sent by the public network IMS system through the second PDU session, learn that the terminal has successfully registered to the public network IMS system.

It should be noted that the first PDU session and the second PDU session in this embodiment are jointly constructed by different network elements belonging to the 5G core network equipment. Therefore, when the above embodiment is specifically implemented, the terminal is connected to the 5G core network through After the first PDU session between network devices sends the SIP registration request, the 5G core network device will transparently transmit the SIP registration request to the local IMS system through the UPF network element that carries the first PDU session, and then the local IMS system receives the SIP registration request. After the request, the terminal will be registered with the local IMS system, and a SIP registration response will be returned to the terminal, and then a notification message of successful SIP registration will be sent to the PCF network element in the 5G core network device that bears the first PDU session. And after the terminal sends the SIP registration request to the second PDU session with the 5G core network device, the 5G core network device will transparently transmit the SIP registration request to the public network IMS system through the UPF network element that carries the second PDU session, Furthermore, after receiving the SIP registration request, the public network IMS system will register the terminal to the public network IMS system, and return a SIP registration response to the terminal, and then send the SIP to the PCF network element in the 5G core network device that carries the second PDU session. Notification message for successful registration.

Wherein, as an embodiment, the above-mentioned first PDU session and second PDU session are established respectively through the following steps before the method flow shown in FIG. 3:

Receive a first PDU session establishment request sent by the terminal, and then establish a first PDU session associated with the local IMS system between the terminal and the 5G core network device based on the first PDU session establishment request; receive a second PDU sent by the terminal A session establishment request is made, and then a second PDU session for association with the public network IMS system is established between the terminal and the 5G core network device based on the second PDU session establishment request.

In specific implementation, the first PDU session can be established in the following manner: the 5G core network device will receive the first PDU session establishment request through the AMF network element, and then notify the SMF network element of the request, and then the SMF network element notifies the PCF. The network element establishes a first PDU session with the UPF network element assigned to the local data network. The second PDU session can be established in the following ways: the 5G core network device will receive the second PDU session establishment request through the AMF network element, and then notify the SMF network element of the request, and then the SMF network element notifies the PCF network element and allocates to the The UPF network element of the public network establishes the second PDU session.

As an embodiment, after the 5G core network device successfully establishes the first PDU session and the second PDU session with the terminal, it will return the first PDU session establishment response and the second PDU session establishment response to the terminal respectively. The first PDU session establishment response will carry the first PDU session information, such as the session identifier of the first PDU session, the network element identifiers of each network element carrying the first PDU session, and the first PDU session assigned to the terminal in the local IMS system. A media address, the second PDU session establishment response will carry the second PDU session information, such as the session identifier of the second PDU session, the network element identifiers of the network elements carrying the second PDU session, and the network element identifiers allocated to the terminal in the public network IMS system. The second media address in .

The above-mentioned first media address is allocated by the PCF network element in the 5G core network device that carries the first PDU session, and the second media address is allocated by the PCF network element in the 5G core network device that carries the second PDU session. .

As an embodiment, the first media address is used for the terminal to register in the local IMS system, and the first media address identifies the PDU session where the terminal is located when the terminal executes a call service belonging to the local IMS system. In the above embodiment, the SIP registration request sent by the terminal through the first PDU may carry the correspondence between the first media address and the local number assigned to the terminal, so that when the local IMS system receives the call service performed by the terminal, it can It is determined by the correspondence between the first media address and the local number assigned to the terminal that the first PDU session is used to transmit the service data in the call service.

In this embodiment, the second media address is used for the terminal to register in the public network IMS system, and the second media address identifies the PDU session where the terminal is located when the terminal executes a call service belonging to the public network IMS system. In the above embodiment, the SIP registration request sent by the terminal through the second PDU may carry the correspondence between the second media address and the public network number assigned to the terminal, so that when the public network IMS system receives the call service performed by the terminal, , it can be determined that the second PDU session is used to transmit the service data in the call service according to the correspondence between the second media address and the public network number assigned to the terminal.

So far, the process shown in FIG. 3 is completed.

It can be seen from the process shown in FIG. 3 that in this embodiment, after learning that the terminal has successfully registered with the local IMS system and the public network IMS system to which the terminal belongs, the 5G core network device sends a message to the terminal to instruct the terminal to access the local IMS The first routing rule of the system and the second routing rule for instructing the terminal to access the public network IMS system, so that the terminal can, based on the first routing rule and the second routing rule, the target number in the call service to be executed in the terminal is the same as the target number. When the first type number segment information in the first routing rule matches, the call service is executed through the first PDU session associated with the local IMS system. When the type II number segment information matches, the call service is executed through the second PDU session associated with the public network IMS system, thereby avoiding the leakage of private data in the local data network in the call service.

It should be noted that this embodiment of the present application does not limit the execution sequence between the above steps 301 and 302. The execution sequence between the steps 301 and 302 is related to the 5G core network device learning that the terminal has successfully registered to the local IMS system and learning that the terminal is successfully registered. The time of the successful registration to the public network IMS system is related. If it is first known that the terminal is successfully registered to the local IMS system, step 301 is performed first, and if it is known that the terminal is successfully registered to the public network IMS system, step 302 is performed first.

For ease of understanding, the routing method provided by the present application will be described in detail below with reference to the specific embodiment shown in FIG. 4 :

As an embodiment, the application scenario of the routing method provided by the present application includes at least a public network and a local data network. The public network IMS system in the public network data network and the local IMS system in the local data network are distinguished by a network identifier (DNN, data network name, Data Network Name), which can uniquely identify the IMS system in the data network and the unique To identify the data network, for example, the network identifier of the local IMS system can be set as imsLocal, and the network identifier of the public network IMS system can be set as ims.

In this embodiment, the above-mentioned network identifiers may be allocated by the operator for the local IMS system and the public network IMS system when creating the public network and the local data network. The IMS system and the public network IMS system allocate number segments, and record the mapping relationship between the number segment allocated by the local IMS system and the network identifier imsLocal of the local IMS system to the PCF network element in the 5G core network device, and the public network IMS The mapping relationship between the number segment allocated by the system and the network identifier ims of the public network IMS system is also recorded in the PCF network element in the 5G core network device.

As an embodiment, the number segment allocated by the operator to the local IMS system is divided based on the pre-divided enterprise network number segment. For example, the enterprise network number segment includes at least 1360000[0-9]{4,4}, 1370000[0-9 ]{4,4}, 1380000[0-9]{4,4} and 1390000[0-9]{4,4}, you can assign 1360000[0-9]{4 which is not assigned to other IMS systems ,4} and 1380000[0-9]{4,4} are allocated to the local IMS system.

After the construction of the local data network is completed, based on the need for the terminal to perform services on the local data network, the network identifier imsLocal of the local IMS system and the network identifier ims of the public network IMS system are pre-configured in the terminal. When the terminal is powered on, the terminal will automatically send the first PDU session request carrying the network identifier imsLocal and the second PDU session request carrying the network identifier ims to the 5G core network device for the configured network identifiers imsLocal and ims, so that the 5G The core network device and the terminal establish a first PDU session associated with the local IMS system and a second PDU session associated with the public network IMS system. For the specific establishment process of the first PDU session and the second PDU session, reference may be made to the above description of the embodiment shown in FIG. 3 , and details are not repeated here.

After the establishment of the first PDU session and the second PDU session is completed, the terminal will obtain the first media address allocated by the 5G core network device for the terminal in the local IMS system through the obtained first PDU session information, and the obtained second PDU session The information obtains the second media address assigned by the 5G core network device to the terminal in the public network IMS system.

Then the terminal can send the SIP registration request carrying the first media address and the local number pre-allocated to the terminal to the local IMS system through the first PDU session, and send the SIP registration request carrying the second media address and the public number pre-allocated to the terminal through the second PDU session. The SIP registration request of the network number is sent to the public network IMS system.

In this embodiment, after receiving the SIP registration request, the local IMS system records the mapping relationship between the first media address and the local number pre-assigned to the terminal, so that when the local IMS system learns that the terminal is calling other terminals, Transfer the call data transmitted from other terminals to the terminal through the first PDU session indicated by the first media address, or, when learning that other terminals request to call the terminal, find the corresponding first media according to the local number of the terminal address, and then notify the terminal through the first PDU session indicated by the first media address.

In this embodiment, after receiving the SIP registration request, the public network IMS system will also record the mapping relationship between the second media address and the public network number pre-assigned to the terminal, so that the public network IMS system can know that the terminal sends other When the terminal makes a call, it transmits the call data transmitted by other terminals to the terminal through the second PDU session indicated by the second media address, or, when it learns that other terminals request to call the terminal, it searches the terminal according to the public network number of the terminal. the corresponding second media address, and then notify the terminal through the second PDU session indicated by the second media address.

Further, after the local IMS system receives the SIP registration request and records the mapping relationship between the first media address and the local number pre-assigned to the terminal, as shown in FIG. The terminal returns a SIP registration response to notify the terminal that the registration in the local IMS system is successful, and sends a notification message of successful SIP registration to the PCF network element in the 5G core network device, so that the 5G core network device knows that the terminal has successfully registered to the local IMS system.

Similarly, as shown in Figure 4, after the public network IMS system receives the SIP registration request and records the mapping relationship between the second media address and the public network number pre-assigned to the terminal, the public network IMS system will The PDU session returns a SIP registration response to the terminal, notifying the terminal that the terminal is successfully registered in the public network IMS system, and sends a notification message that the SIP registration is successful to the PCF network element in the 5G core network device, so that the 5G core network device knows that the terminal has successfully registered to the public network. IMS system.

Further, as shown in FIG. 4 , after learning that the terminal has successfully registered with the local IMS system, the 5G core network device will trigger the PCF network element to issue the first route to the terminal to instruct the terminal to access the local IMS system through the first PDU session. After learning that the terminal has successfully registered with the public network IMS system, the PCF network element will be triggered to issue a second routing rule to the terminal to instruct the terminal to access the public network IMS system through the second PDU session.

Optionally, after receiving the first routing rule through the first PDU session, the terminal in this embodiment records the mapping relationship between the local IMS system and the first type number segment information in the first routing rule to a pre-created one. In the routing rule record table, after the second routing rule is received through the second PDU session, the mapping relationship between the public network IMS system and the second type number segment information in the second routing rule is recorded in the same routing rule record table.

Exemplarily, the routing rule record table in the terminal may be recorded in the table shown in Table 1 below:

Table 1

The number segment information in Table 1 is an example recorded using regular expressions. For example, the number segment information 1380000[0-9]{4,4} means that the first 7 digits of the number are 1380000, and each of the last 4 digits is 0 to 9. The number of any number, the number segment information 1360000[0-9]{4,4} indicates that the first 7 digits of the number are 1360000, and each of the last 4 digits is a number from 0 to 9. Number segment information 135[ 0-9]{8,8} means that the first 3 digits of the number are 135, and each of the last 8 digits is any number from 0 to 9.

It can also be seen from Table 1 that the local IMS system can be assigned one or more number segments. For example, the local IMS system whose DNN is imsLocal in the above table is assigned two number segments: 1380000[0-9]{4,4} and 1360000[0-9]{4,4}. Similarly, the public network IMS system can also be assigned one or more numbers, and the public network whose DNN is ims in Table 1 is assigned a number segment: 135[0-9]{8,8}. In this embodiment, how many number segments are allocated to the local IMS system depends on the business requirements of the enterprise applying for the enterprise network. When multiple enterprises share one enterprise network, different number segments can be allocated to different enterprises according to business requirements.

Based on the routing rule record table shown in Figure 1, when the terminal executes the call service, it can first match the target number in the call service with the number segment information in the routing rule record table to determine the number segment where the target number is located , and then look up the corresponding IMS DNN from the routing rule record table according to the number segment where the target number is located, so as to know which IMS system is associated with which PDU session the call service needs to use. For example, when the target number in the call service is 1380000XXXX (X represents a specific number), it can be determined that the number segment information of the number segment where the number is located is 1380000[0-9]{4, 4}, and 1380000 in the routing rule record table [0-9] The network identifier of the IMS system corresponding to {4, 4} is imsLocal, and the terminal may select the first PDU session associated with the local IMS system indicated by imsLocal to execute the call service.

So far, the description of the whole process of routing when the terminal performs the call service in this embodiment is completed.

The above examples are only for the convenience of understanding, and the embodiments of the present application are not specifically limited.

The methods provided by the embodiments of the present application have been described above. The devices provided in the embodiments of the present application are described below:

Referring to FIG. 5 , FIG. 5 is a schematic diagram of a routing device provided by an embodiment of the present application, and the device embodiment is applied to a terminal. The device includes:

The first routing rule obtaining unit 501 is configured to obtain a first routing rule for instructing the terminal to access the local IMS system after learning that the terminal has successfully registered with the local IP Multimedia Subsystem IMS system to which the terminal belongs. A routing rule includes at least a mapping relationship between the local IMS system and first type number segment information, where the first type number segment information includes the number segment allocated by the local IMS system.

The second routing rule obtaining unit 502 is configured to obtain a second routing rule for instructing the terminal to access the public network IMS system after learning that the terminal has successfully registered with the public network IMS system, where the second routing rule at least includes The mapping relationship between the public network IMS system and the second type number segment information, where the second type number segment information includes the number segment allocated by the public network IMS system.

The call service execution unit 503 is configured to, for the call service to be executed, if the target number in the call service matches the first type number segment information in the first routing rule, pass the call service between the call service and the 5G core network device. The established first protocol data unit PDU session associated with the local IMS system executes the call service; if the target number in the call service matches the second type number segment information in the second routing rule, the call service is passed through The call service is executed through the second PDU session established with the 5G core network device associated with the public network IMS system.

Optionally, the device further includes:

A registration unit, configured to send a session initiation protocol SIP registration request through the first PDU session with the 5G core network device, so that the 5G core network device forwards the SIP registration request to the local IMS system to which the terminal belongs , so that the terminal successfully registers with the local IMS system.

The first routing rule obtaining unit 501 obtains the first routing rule for instructing the terminal to access the local IMS system, including:

The first routing rule issued by the 5G core network device is received through the first PDU session.

Optionally, the registration unit is further configured to send a session initiation protocol SIP registration request through the second PDU session with the 5G core network device, so that the 5G core network device forwards the SIP registration request to the 5G core network device. public network IMS system, so that the terminal is successfully registered to the public network IMS system.

The second routing rule obtaining unit 502 obtains a second routing rule for instructing the terminal to access the public network IMS system, including:

The second routing rule issued by the 5G core network device is received through the second PDU session.

Optionally, the number segment allocated by the local IMS system is a pre-designated enterprise network number segment; the number segment allocated by the public network IMS system is a pre-designated public network number segment.

Optionally, the device further includes:

a first PDU session establishment unit, configured to send a first PDU session establishment request to the 5G core network device when a first PDU session establishment event is detected; the first PDU session establishment request is used to instruct the 5G core A network device establishes the first PDU session for association with the local IMS system between the terminal and the 5G core network device.

The second PDU session establishment unit is configured to send a second PDU session establishment request to the 5G core network device when a second PDU session establishment event is detected; the second PDU session establishment request is used to instruct the 5G core The network device establishes the second PDU session for being associated with the public network IMS system between the terminal and the 5G core network device.

The above completes the description of the apparatus embodiment shown in FIG. 5 .

Referring to FIG. 6 below, FIG. 6 is a schematic diagram of a routing device provided by an embodiment of the present application, and the device embodiment is applied to 5G core network equipment. The device includes:

The first routing rule issuing unit 601 is configured to issue a first routing rule for instructing the terminal to access the local IMS system to the terminal after learning that the terminal has successfully registered with the local IP multimedia subsystem IMS system to which the terminal belongs , the first routing rule includes at least the mapping relationship between the local IMS system and the first type of number segment information, where the first type of number segment information includes the number segment allocated by the local IMS system.

The second routing rule issuing unit 602 is configured to issue a second routing rule to the terminal for instructing the terminal to access the public network IMS system after learning that the terminal has successfully registered with the public network IMS system, the The second routing rule includes at least the mapping relationship between the public network IMS system and the second type number segment information, where the second type number segment information includes the number segment allocated by the public network IMS system.

The first routing rule is used to instruct the terminal to communicate with the 5G core network device when the target number in the call service executed by the terminal matches the first type of information in the first routing rule The first protocol data unit PDU session established between the local IMS system and associated with the local IMS system executes the call service;

The second routing rule is used to instruct the terminal to pass between the terminal and the 5G core network device when the target number in the call service executed by the terminal matches the second type number segment information in the second routing rule. The established second PDU session associated with the public network IMS system executes the call service.

Optionally, the first routing rule issuing unit 601 learns that the terminal has successfully registered with the local IP Multimedia Subsystem IMS system to which the terminal belongs, including:

When receiving a notification message of successful SIP registration sent by the local IMS system through the first PDU session, learn that the terminal has successfully registered with the local IMS system to which the terminal belongs;

The second routing rule issuing unit 602 learns that the terminal is successfully registered with the public network IMS system, including:

When the notification message of successful SIP registration sent by the public network IMS system is received through the second PDU session, it is learned that the terminal has successfully registered with the public network IMS system.

Optionally, the device further includes:

The first PDU session establishment unit is configured to receive a first PDU session establishment request sent by the terminal; the first PDU session associated with the local IMS system.

The second PDU session establishment unit is configured to receive a second PDU session establishment request sent by the terminal; based on the second PDU session establishment request, establish a connection between the terminal and the 5G core network device for communication with the second PDU session establishment request. the second PDU session associated with the public network IMS system.

The above completes the description of the apparatus embodiment shown in FIG. 6 .

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the present application. within the scope of protection.

Claims (10)

1. A routing method, characterized in that the method is applied to a terminal, comprising: After learning that the terminal has successfully registered with the local IP Multimedia Subsystem IMS system to which the terminal belongs, obtain a first routing rule for instructing the terminal to access the local IMS system, where the first routing rule at least includes the local IMS system and the mapping relationship between the number segment information of the first type, where the number segment information of the first type includes the number segment allocated by the local IMS system; After learning that the terminal has successfully registered with the public network IMS system, obtain a second routing rule for instructing the terminal to access the public network IMS system, where the second routing rule includes at least the public network IMS system and the second type of routing rules. The mapping relationship between the number segment information, the second type of number segment information includes the number segment allocated by the public network IMS system; For the call service to be executed, if the target number in the call service matches the first type number segment information in the first routing rule, the local IMS system will be associated with the 5G core network device through the association The first protocol data unit PDU session of the first protocol data unit PDU session executes the call service; if the target number in the call service matches the second type number segment information in the second routing rule, the call service is established by establishing a relationship with the 5G core network device. The second PDU session associated with the public network IMS system executes the call service. 2. The method of claim 1, further comprising: Send a session initiation protocol SIP registration request through the first PDU session with the 5G core network device, so that the 5G core network device forwards the SIP registration request to the local IMS system to which the terminal belongs, so that the terminal successfully registered to the local IMS system; The obtaining the first routing rule for instructing the terminal to access the local IMS system includes: The first routing rule issued by the 5G core network device is received through the first PDU session. 3. The method of claim 1, further comprising: Send a session initiation protocol SIP registration request through the second PDU session with the 5G core network device, so that the 5G core network device forwards the SIP registration request to the public network IMS system, so that the terminal is successfully registered to the public network IMS system; The obtaining the second routing rule for instructing the terminal to access the public network IMS system includes: The second routing rule issued by the 5G core network device is received through the second PDU session. 4. The method according to any one of claims 1 to 3, wherein the number segment allocated by the local IMS system is a pre-designated enterprise network number segment; the number segment allocated by the public network IMS system The segment is a pre-designated public network number segment. 5. The method according to any one of claims 1 to 3, characterized in that, before the method, it further comprises: When a first PDU session establishment event is detected, a first PDU session establishment request is sent to the 5G core network device; the first PDU session establishment request is used to instruct the 5G core network device to connect the terminal to the 5G core network device. establishing the first PDU session associated with the local IMS system between 5G core network devices; When a second PDU session establishment event is detected, a second PDU session establishment request is sent to the 5G core network device; the second PDU session establishment request is used to instruct the 5G core network device to connect the terminal and the The second PDU session associated with the public network IMS system is established between 5G core network devices. 6. A routing method, characterized in that the method is applied to 5G core network equipment, comprising: After learning that the terminal has successfully registered with the local IP multimedia subsystem IMS system to which the terminal belongs, a first routing rule for instructing the terminal to access the local IMS system is delivered to the terminal, where the first routing rule at least includes the The mapping relationship between the local IMS system and the first-type number segment information, where the first-type number segment information includes the number segment allocated by the local IMS system; After learning that the terminal has successfully registered with the public network IMS system, issue a second routing rule to the terminal for instructing the terminal to access the public network IMS system, where the second routing rule at least includes the public network IMS system The mapping relationship between the system and the second type number segment information, where the second type number segment information includes the number segment allocated by the public network IMS system; The first routing rule is used to instruct the terminal to communicate with the 5G core network device when the target number in the call service executed by the terminal matches the first type of information in the first routing rule The first protocol data unit PDU session established between the local IMS system and associated with the local IMS system executes the call service; The second routing rule is used to instruct the terminal to pass between the terminal and the 5G core network device when the target number in the call service executed by the terminal matches the second type number segment information in the second routing rule. The established second PDU session associated with the public network IMS system executes the call service. 7. The method according to claim 6, wherein the learning that the terminal is successfully registered to the local IP Multimedia Subsystem IMS system to which the terminal belongs, comprising: When receiving a notification message of successful SIP registration sent by the local IMS system through the first PDU session, learn that the terminal has successfully registered with the local IMS system to which the terminal belongs; The knowing that the terminal is successfully registered with the public network IMS system includes: When the notification message of successful SIP registration sent by the public network IMS system is received through the second PDU session, it is learned that the terminal has successfully registered with the public network IMS system. 8. The method according to claim 6 or 7, characterized in that, before the method, it further comprises: Receive a first PDU session establishment request sent by the terminal; based on the first PDU session establishment request, establish between the terminal and the 5G core network device the PDU for being associated with the local IMS system the first PDU session; Receive a second PDU session establishment request sent by the terminal; based on the second PDU session establishment request, establish between the terminal and the 5G core network device all the information used to associate with the public network IMS system. the second PDU session. 9. A routing device, wherein the device is applied to a terminal, comprising: The first routing rule obtaining unit is configured to obtain a first routing rule for instructing the terminal to access the local IMS system after learning that the terminal has successfully registered with the local IP Multimedia Subsystem IMS system to which the terminal belongs. The routing rule includes at least a mapping relationship between the local IMS system and first type number segment information, where the first type number segment information includes the number segment allocated by the local IMS system; The second routing rule obtaining unit is configured to obtain a second routing rule for instructing the terminal to access the public network IMS system after learning that the terminal has successfully registered with the public network IMS system, where the second routing rule at least includes all the mapping relationship between the public network IMS system and the second type number segment information, where the second type number segment information includes the number segment allocated by the public network IMS system; The call service execution unit is configured to, for the call service to be executed, if the target number in the call service matches the first type number segment information in the first routing rule, establish a connection with the 5G core network device. The first protocol data unit PDU session associated with the local IMS system executes the call service; if the target number in the call service matches the second type number segment information in the second routing rule, the The call service is executed in the second PDU session associated with the public network IMS system established between the 5G core network devices. 10. A routing device, characterized in that the device is applied to 5G core network equipment, comprising: a first routing rule issuing unit, configured to issue a first routing rule for instructing the terminal to access the local IMS system to the terminal after learning that the terminal has successfully registered with the local IP multimedia subsystem IMS system to which the terminal belongs, The first routing rule includes at least the mapping relationship between the local IMS system and the first type of number segment information, where the first type of number segment information includes the number segment allocated by the local IMS system; The second routing rule issuing unit is configured to issue a second routing rule to the terminal for instructing the terminal to access the public network IMS system after learning that the terminal has successfully registered with the public network IMS system, the first routing rule issuing unit. The second routing rule includes at least the mapping relationship between the public network IMS system and the second type number segment information, and the second type number segment information includes the number segment allocated by the public network IMS system; The first routing rule is used to instruct the terminal to communicate with the 5G core network device when the target number in the call service executed by the terminal matches the first type of information in the first routing rule The first protocol data unit PDU session established between the local IMS system and associated with the local IMS system executes the call service; The second routing rule is used to instruct the terminal to pass between the terminal and the 5G core network device when the target number in the call service executed by the terminal matches the second type number segment information in the second routing rule. The established second PDU session associated with the public network IMS system executes the call service.

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