CN114080053A

CN114080053A - Session data processing method, device and related network equipment

Info

Publication number: CN114080053A
Application number: CN202010809407.4A
Authority: CN
Inventors: 陈旭; 王荣
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2022-02-22

Abstract

The embodiment of the invention discloses a session data processing method, a session data processing device and related network equipment, wherein the method comprises the following steps: receiving a session establishment request initiated by User Equipment (UE) by a Session Management Function (SMF); the SMF obtains a session detection rule; the SMF determines detection information based on the session detection rule and sends the detection information to a User Plane Function (UPF); the detection information includes: first information and a processing mechanism for the first information; the first information includes characteristic information of data that is allowed to be put through.

Description

Session data processing method, device and related network equipment

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for processing session data, and a related network device.

Background

With the development of the fifth generation mobile communication technology (5G), network slicing technology is in progress. A 5G network slice is an end-to-end logical private network that provides specific network capabilities. After a vertical industry User orders and opens a network slice, a network side generates a User Equipment routing Policy (URSP) and sends the UE routing Policy to User Equipment (UE) after the UE registers a network; the UE selects a network slice according to the URSP when using the application service.

However, at present, the network side does not manage and control the traffic flow of the non-compliant terminal.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide a session data processing method, an apparatus and a related network device.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a session data processing method, where the method is applied to a Session Management Function (SMF); the method comprises the following steps:

the SMF receives a session establishment request initiated by User Equipment (UE);

the SMF obtains a session detection rule;

the SMF determines detection information based on the session detection rule and sends the detection information to a User Plane Function (UPF); the detection information includes: first information and a processing mechanism for the first information; the first information includes characteristic information of data that is allowed to be put through.

In the foregoing scheme, the obtaining, by the SMF, the session detection rule includes:

the SMF sends a first request message to a Policy Control Function (PCF), and obtains a session detection rule sent by the PCF based on the first request message; said session detection rules are generated by said PCF based on routing policies obtained from a unified data repository, UDR, relating to session information of said session establishment request and session information of said session establishment request obtained from said SMF.

the SMF sends a second request message to the PCF, and obtains a routing strategy which is sent by the PCF and is related to the session information of the session establishment request based on the second request message; the routing policy is obtained by the PCF from the UDR;

and generating a session detection rule based on the routing strategy and the session information of the session establishment request.

In the above scheme, the method further comprises: and when the session information of the session establishment request does not accord with the session detection rule, the SMF sends a first response message which is used for representing session establishment rejection aiming at the session establishment request to the UE.

In the above scheme, the method further comprises: and when the session information of the session establishment request conforms to the session detection rule, the SMF sends a second response message for representing successful session establishment of the session establishment request to the UE.

In the above scheme, the first response message further includes a cause value for indicating a reason for session establishment rejection; the cause value is used to indicate that the UE re-matches the URSP.

In the foregoing solution, the first response message further includes new session information and a session reestablishment indication, where the session reestablishment indication is used for the UE to reinitiate the session establishment request according to the new session information.

In the foregoing solution, the session information includes at least one of the following: slice identification, Data Network Name (DNN), session identification, session type, traffic and session continuity pattern, session management capabilities;

the session information further includes at least one of: and the service descriptor, the application address and the application identifier of the service flow borne by the session corresponding to the session request.

In the foregoing solution, the mechanism for processing the first information includes: a processing mechanism for not detecting the first information.

In the above scheme, the detection information further includes information related to the detection duration.

In a second aspect, an embodiment of the present invention further provides a session data processing method, where the method is applied to a PCF; the method comprises the following steps:

the PCF obtains a session detection rule; the session detection rule is obtained after the UE initiates a session establishment request; the session detection rule is generated based on a routing policy related to session information of the session establishment request and the session information of the session establishment request;

the PCF sends the session detection rule to the SMF; and the session detection rule is used for the SMF to check and match the session information of the session establishment request.

In the above solution, the PCF obtaining the session detection rule includes:

and after receiving the session information of the session establishment request sent by the SMF, the PCF inquires a routing strategy related to the session information of the session establishment request.

In a third aspect, an embodiment of the present invention further provides a session data processing method, where the method is applied to a UPF; the method comprises the following steps:

the UPF obtains detection information sent by the SMF; the detection information includes: first information and a processing mechanism for the first information; the first information comprises characteristic information of the data allowed to be put through; the detection information is determined based on a session detection rule;

and after the session of the UE is successfully established, the UPF detects the service data of the UE based on the detection information.

In the foregoing solution, the processing mechanism of the first information includes: a processing mechanism for not detecting the first information.

In the foregoing solution, the detecting, by the UPF, the service data of the UE based on the detection information includes: and the UPF detects the service data of the UE based on the detection information and only allows the media stream and the data packet containing the first information to pass through.

In the above scheme, the detection information is determined based on a session detection rule.

In the foregoing solution, the detecting, by the UPF, the service data of the UE based on the detection information includes: when the first information is not detected, sending a detection result to the SMF; the detection result is used for enabling the SMF to release the session with the UE.

In the foregoing solution, the detecting, by the UPF, the service data of the UE based on the detection information includes: and stopping the detection of the first information when the first information is detected.

In a fourth aspect, an embodiment of the present invention further provides a session data processing apparatus, where the apparatus is applied to an SMF; the device comprises: the device comprises a first receiving unit, a first acquiring unit, a first determining unit and a first sending unit; wherein the content of the first and second substances,

the first receiving unit is configured to receive a session establishment request initiated by user equipment UE;

the first obtaining unit is used for obtaining a session detection rule;

the first determining unit is used for determining detection information based on the session detection rule;

the first sending unit is used for sending the detection information to the UPF; the detection information includes: first information and a processing mechanism for the first information; the first information includes characteristic information of data that is allowed to be put through.

In the above solution, the first obtaining unit is configured to send a first request message to a PCF, and obtain, based on the first request message, a session detection rule sent by the PCF; the session detection rule is generated by the PCF based on routing policies obtained from the UDR relating to session information of the session establishment request and session information of the session establishment request obtained from the SMF.

In the above solution, the first obtaining unit is configured to send a second request message to the PCF, and obtain, based on the second request message, a routing policy related to session information of the session establishment request sent by the PCF; the routing policy is obtained by the PCF from the UDR; and generating a session detection rule based on the routing strategy and the session information of the session establishment request.

In the foregoing solution, the first sending unit is further configured to send, to the UE, a first response message indicating that session establishment is rejected for the session establishment request when the session information of the session establishment request does not conform to the session detection rule.

In the foregoing solution, the first sending unit is further configured to send, to the UE, a second response message indicating that session establishment is successful for the session establishment request when the session information of the session establishment request conforms to the session detection rule.

In the foregoing solution, the session information includes at least one of the following: slice identification, DNN, session identification, session type, service and session continuity mode, session management capability;

In a fifth aspect, an embodiment of the present invention further provides a session data processing apparatus, where the apparatus is applied to a PCF; the device comprises: a second acquiring unit and a second transmitting unit; wherein the content of the first and second substances,

the second obtaining unit is used for obtaining a session detection rule; the session detection rule is obtained after User Equipment (UE) initiates a session establishment request; the session detection rule is generated based on a routing policy related to session information of the session establishment request and the session information of the session establishment request;

the second sending unit is configured to send the session detection rule to the SMF; and the session detection rule is used for the SMF to check and match the session information of the session establishment request.

In the foregoing solution, the second obtaining unit is configured to, after receiving the session information of the session establishment request sent by the SMF, query a routing policy related to the session information of the session establishment request.

In a sixth aspect, an embodiment of the present invention further provides a session data processing apparatus, where the apparatus is applied to a UPF; the device comprises: a second receiving unit and a detecting unit; wherein the content of the first and second substances,

the second receiving unit is used for obtaining detection information sent by the SMF; the detection information includes: first information and a processing mechanism for the first information; the first information comprises characteristic information of the data allowed to be put through; the detection information is determined based on a session detection rule;

and the detection unit is used for detecting the service data of the UE based on the detection information after the session of the UE is successfully established.

In the foregoing solution, the detecting unit is configured to detect service data of the UE based on the detection information, and only allow a media stream and a data packet including the first information to pass through.

In the foregoing solution, the apparatus further includes a third sending unit, configured to send a detection result to the SMF when the detection unit cannot detect the first information; the detection result is used for enabling the SMF to release the session with the UE.

In the foregoing solution, the detecting unit is configured to stop detecting the first information when the first information is detected.

In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to the first aspect, the second aspect, or the third aspect of the embodiment of the present invention.

In an eighth aspect, an embodiment of the present invention further provides a network device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the method in the first aspect, the second aspect, or the third aspect of the embodiment of the present invention.

On one hand, the Session data processing method, the Session data processing device and the related network equipment provided by the embodiment of the invention receive a Session establishment request initiated by UE through a Session Management Function (SMF); the SMF obtains a session detection rule; determining detection information based on the session detection rule, and sending the detection information to a User Plane Function (UPF); the detection information includes: first information and a processing mechanism for the first information; the first information comprises characteristic information of the data allowed to be put through; and after the session of the UE is successfully established, the UPF detects the service data of the UE based on the detection information. In this way, in this embodiment, the detection information is determined according to the session parameter check rule, and the UPF is sent, and the UPF manages and controls the service data based on the detection information, thereby implementing management and control of the service flow of the non-compliant terminal by the network side.

Drawings

Fig. 1 is a first flowchart illustrating a session data processing method according to an embodiment of the present invention;

FIG. 2 is a second flowchart illustrating a session data processing method according to an embodiment of the present invention;

FIG. 3 is a third flowchart illustrating a session data processing method according to an embodiment of the present invention;

FIG. 4 is a first schematic interaction flow diagram of a session data processing method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating an interaction flow of a session data processing method according to an embodiment of the present invention;

FIG. 6 is a third schematic interaction flow diagram of a session data processing method according to an embodiment of the present invention;

FIG. 7 is a first schematic diagram illustrating a first exemplary configuration of a session data processing apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic diagram illustrating a second exemplary embodiment of a session data processing apparatus;

FIG. 9 is a third schematic diagram illustrating a structure of a session data processing apparatus according to an embodiment of the present invention;

FIG. 10 is a block diagram of a session data processing apparatus according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a hardware component structure of a network device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the invention provides a session data processing method which is applied to SMF. Fig. 1 is a first flowchart illustrating a session data processing method according to an embodiment of the present invention; as shown in fig. 1, the method includes:

step 101: SMF receives a session establishment request initiated by user equipment UE;

step 102: the SMF obtains a session detection rule;

step 103: the SMF determines detection information based on the session detection rule and sends the detection information to the UPF; the detection information includes: first information and a processing mechanism for the first information; the first information includes characteristic information of data that is allowed to be put through.

In this embodiment, after the UE initiates the session establishment request, the SMF obtains the session detection rule, and may determine the detection information based on the session detection rule, and the UPF may detect the data packet or the media stream of the UE based on the detection information obtained from the SMF when the session establishment of the UE is successful, that is, the UE may access the application platform or the server.

The detection information may also be referred to as a user plane first information list or a user plane first information list of the session. The detection information is used to indicate which information (i.e. the first information) should be detected in the detection period when the UPF detects the media stream/data packet of the user plane channel of the session, and a processing mechanism of the first information. The first information comprises characteristic information of the data allowed to be put through; illustratively, the first information may include information of an access operation, an access address, and the like. The first information may also be referred to as essential information or the like.

In some optional embodiments, the detection information further includes information related to the detection duration; the relevant information of the detection duration may be parameters related to time, such as the detection duration, the detection period, and the like. The processing mechanism of the first information comprises: a processing mechanism for not detecting the first information. For example, the processing mechanism for the first information may include reporting SMF, releasing media plane resources, and the like, when the first information is not detected in the detection period. In this way, the UE is configured to detect whether the UE uses the user plane channel of the session to access the network-enabled application, and if the UE does not access the network-enabled application in the user plane channel, the UE releases the user plane resources.

The first information may also be referred to as a user whitelist, and the content recorded in the user whitelist represents characteristic information of a data packet or a media stream allowed to be put through. For example, the first information may include an address of a specific application server, and after receiving the detection information, the UPF allows only the UE to access the address of the specific application server based on the indication of the first information in the detection information, and does not allow other addresses of the application servers to access the address. Thus, if the non-signed application falsely uses the network slice service with the identification (e.g., APP ID) of the legitimate application, the server of the non-signed application cannot be accessed.

In this embodiment, in the process of initiating session establishment by the UE, the SMF obtains a session detection rule, and verifies session information matching the session establishment request based on the session detection rule.

The session detection rule is used for detecting the attribute or the characteristic of a session establishment request initiated by the UE. Illustratively, the session detection rules include at least: 1) the SMF allows session information corresponding to the session established by the user (namely UE); 2) SMF allows users to establish sessions to use services of which network slices and which Data Network Names (DNNs); 3) the service characteristics corresponding to the session, that is, the service with which service characteristics the session can be used. In some examples, the service features may be characterized by information such as access addresses, registration addresses, and the like of the services; in other examples, the traffic characteristics may also be characterized by traffic descriptors. The service descriptor may include, for example, an application Identification (ID) or a Fully Qualified Domain Name (FQDN).

It is to be understood that the session information includes at least one of: slice identification, Data Network Name (DNN), Session identification, Session type, Service and Session Continuity mode (SSC mode), Session management capability; the session information further includes at least one of: and the service descriptor, the application address and the application identifier of the service flow borne by the session corresponding to the session request.

Wherein the Slice identity may be represented by Single-Network Slice Selection Assistance Information (S-NSSAI); the session identifier is specifically a Protocol Data Unit (PDU) session identifier (PDU session ID); the Session Type may specifically be a Requested PDU Session Type (Requested PDU Session Type); the session management Capability may specifically be a session management Capability (SM Capability) in the 5G system.

In some embodiments, the UE-initiated session setup request is encapsulated in one cell of a NAS message, arrives at the AMF through the access network equipment, and is sent by the AMF to the SMF. Wherein, since the AMF is to select an SMF for the UE, the slice identifier and DNN related to the session for selecting the SMF are placed in the NAS message. The AMF will send the slice identification and DNN to the SMF along with the encapsulated session setup request. It can be understood that, when receiving the session establishment request initiated by the UE, the SMF also obtains the slice identifier and DNN related to the session, which are sent by the UE, from the AMF, so as to obtain complete session information.

In some optional embodiments of the present application, the SMF obtains a session detection rule, including: the SMF sends a first request message to a Policy Control Function (PCF), and obtains a session detection rule sent by the PCF based on the first request message; the session detection rule is generated by the PCF based on a routing policy associated with session information of the session establishment request obtained from a Unified Data Repository (UDR) and session information of the session establishment request obtained from the SMF.

In the embodiments of the present application, the routing policy may also be referred to as a URSP.

In the embodiment, the SMF receives a session establishment request and sends a first request message to the PCF; the first request message is used for requesting a session detection rule. The PCF receives the first request message, and then obtains the session detection rule by querying the routing policy associated with the session information of the session establishment request from the UDR in combination with the session information of the session establishment request reported by the SMF. Optionally, the PCF may intersect the routing policy and the session information to obtain the session detection rule. Further, the PCF sends the generated session detection rule to the SMF.

In other optional embodiments of the present application, the SMF obtains a session detection rule, including: the SMF sends a second request message to the PCF, and obtains a routing strategy which is sent by the PCF and is related to the session information of the session establishment request based on the second request message; the routing policy is obtained by the PCF from the UDR; and generating a session detection rule based on the routing strategy and the session information of the session establishment request.

In this embodiment, the SMF receives the session establishment request, and sends a second request message to the PCF; the second request message is used for requesting a routing policy related to the session information of the session establishment request. The PCF, after receiving the second request message, sends the routing policy associated with the session information of said session establishment request to the SMF by querying the routing policy associated with the session information of said session establishment request from the UDR. Further, the SMF obtains the session detection rule by combining a routing policy associated with the session information of the session establishment request and the session information of the session establishment request. Optionally, the SMF may intersect the routing policy and the session information to obtain the session detection rule.

It should be noted that the difference between the session detection rule in this embodiment and the URSP is: the URSP comprises priority information, and the session detection rule does not comprise the priority information; the URSP comprises a default slice and a default DNN; and default slices and default DNNs are not included in the session detection rules; URSP is independent of SMF capabilities, while the session detection rules are related to SMF capabilities; the session detection rule necessarily includes application information (e.g., application identifier, application address), and the URSP may not include application information; the URSP needs to consider the update procedure, and the session detection rule does not need to consider the update procedure, because the AMF may select different SMFs when the UE requests session establishment, and the different SMFs have different capabilities, the obtained session detection rule may also be different.

In this embodiment, the SMF detects or verifies whether the session information of the session establishment request conforms to the session detection rule. For example, the SMF may match the session detection rule based on an access address and a registration address in the session information, or may also match the session detection rule based on a traffic descriptor in the session information, and respond to the session establishment request based on a matching result.

In some optional embodiments, when the session information of the session establishment request does not comply with the session detection rule, the SMF sends a first response message characterizing a session establishment rejection to the UE for the session establishment request.

In some embodiments, the first response message further includes a reason value indicating a reason for the session establishment rejection; the cause value is used to indicate that the UE re-matches the URSP. For example, the reason value may indicate at least one of reasons for not recognizing the slice identifier, not using the slice identifier, not recognizing the DNN, not using the DNN, and the like.

In some other embodiments, the first response message further includes new session information and a session reestablishment indication, where the session reestablishment indication is used for the UE to reinitiate the session establishment request according to the new session information.

In further alternative embodiments, the method further comprises: and when the session information of the session establishment request conforms to the session detection rule, the SMF sends a second response message for representing successful session establishment of the session establishment request to the UE.

In this embodiment, when the session information of the session establishment request of the UE conforms to the session detection rule, the SMF allows session establishment, and returns a second response message indicating that session establishment is successful to the UE. When the session information of the session establishment request of the UE does not accord with the session detection rule, the SMF refuses the session establishment, and then sends a first response message representing the session establishment refusal to the UE.

Based on the above embodiment, the embodiment of the present invention further provides a session data processing method, which is applied to PCF. FIG. 2 is a second flowchart illustrating a session data processing method according to an embodiment of the present invention; as shown in fig. 2, the method includes:

step 201: PCF obtains a conversation detection rule; the session detection rule is obtained after the UE initiates a session establishment request; the session detection rule is generated based on a routing policy related to session information of the session establishment request and the session information of the session establishment request;

step 202: the PCF sends the session detection rule to the SMF; and the session detection rule is used for the SMF to check and match the session information of the session establishment request.

In some optional embodiments of the invention, the PCF obtains a session detection rule, comprising: and after receiving the session information of the session establishment request sent by the SMF, the PCF inquires a routing strategy related to the session information of the session establishment request.

In this embodiment, after receiving session information of a session establishment request sent by an SMF, a PCF queries, from a UDR, a routing policy associated with the session information of the session establishment request, and generates a session detection rule based on the routing policy and the session information of the session establishment request obtained from the SMF.

Optionally, the PCF may send the session detection rule to the SMF after receiving the first request message sent by the SMF.

In another embodiment, the PCF may also send, after receiving the second request message sent by the SMF, the routing policy related to the session information of the session establishment request obtained by the query to the SMF, and the SMF generates the session detection rule based on the session information of the session establishment request and the routing policy.

Based on the above embodiment, the embodiment of the present invention further provides a session data processing method, which is applied to the UPF. FIG. 3 is a third flowchart illustrating a session data processing method according to an embodiment of the present invention; as shown in fig. 3, the method includes:

step 301: the UPF obtains detection information sent by the SMF; the detection information includes: first information and a processing mechanism for the first information; the first information comprises characteristic information of the data allowed to be put through; the detection information is determined based on a session detection rule;

step 302: and after the session of the UE is successfully established, the UPF detects the service data of the UE based on the detection information.

In this embodiment, after the UE initiates the session establishment request, the SMF may determine detection information based on the obtained session detection rule and send the detection information to the UPF, and the UPF may obtain the detection information sent by the SMF and detect the service data of the UE based on the detection information after the session establishment of the UE is successful.

The detection information may also be referred to as a user plane first information list or a user plane first information list of the session. The detection information is used to indicate which information (i.e. the first information) should be detected in the detection period when the UPF detects the media stream/data packet of the user plane channel of the session, and a processing mechanism of the first information. The first information comprises characteristic information of the data allowed to be put through; illustratively, the first information may include information of an access operation, an access address, and the like.

In some optional embodiments, the detection information further includes information related to the detection duration; the relevant information of the detection duration may be parameters related to time, such as the detection duration, the detection period, and the like. The processing mechanism of the first information comprises: and the processing mechanism of the first information can not be detected in the detection period. For example, the processing mechanism for the first information may include reporting SMF, releasing media plane resources, and the like, when the first information is not detected in the detection period. In this way, the UE is configured to detect whether the UE uses the user plane channel of the session to access the network-enabled application, and if the UE does not access the network-enabled application in the user plane channel, the UE releases the user plane resources.

In some optional embodiments of the present invention, the detecting, by the UPF, the service data of the UE based on the detection information includes: and the UPF detects the service data of the UE based on the detection information and only allows the media stream and the data packet containing the first information to pass through.

In some optional embodiments, the detecting, by the UPF, the traffic data of the UE based on the detection information includes: when the first information is not detected, sending a detection result to the SMF; the detection result is used for enabling the SMF to release the session with the UE. Optionally, in a case that the detection information includes information related to a detection duration, the detecting, by the UPF, service data of the UE based on the detection information includes: when the first information cannot be detected in the time length range corresponding to the relevant information of the detection time length, sending a detection result to the SMF; the detection result is used for enabling the SMF to release the session with the UE.

In some optional embodiments, the detecting, by the UPF, the traffic data of the UE based on the detection information includes: and stopping the detection of the first information when the first information is detected. Optionally, in a case that the detection information includes information related to a detection duration, the detecting, by the UPF, service data of the UE based on the detection information includes: and stopping the detection of the first information when the first information is detected in a time length range corresponding to the relevant information of the detection time length.

The following describes a session data processing method according to an embodiment of the present invention with reference to a specific example.

FIG. 4 is a first schematic interaction flow diagram of a session data processing method according to an embodiment of the present invention; as shown in fig. 4, the method includes:

step 401: UE sends a session establishment request; the session establishment request comprises session information of a session requested to be established; optionally, the session information may include a service descriptor of a service flow carried by the session.

Wherein, the session establishment request reaches the AMF through the wireless access network, the AMF selects an SMF for the UE, and the session establishment request is sent to the selected SMF.

Step 402: the SMF receives the session establishment request and sends a session control policy request (i.e., the first request message in the foregoing embodiment) to the PCF.

Step 403: the PCF queries the URSP (i.e. the routing policy in the previous embodiment) from the UDR.

Here, the PCF receives the session control policy request (i.e., the first request message in the foregoing embodiment) sent by the SMF, and the session information of the session establishment request sent by the SMF in advance, and queries the URSP associated with the session information of the session establishment request from the UDR.

Step 404: the PCF generates a session detection rule.

Here, PCF obtains the session detection rule by taking the intersection of the URSP of the user and the session information.

Step 405: the PCF sends session control policies and session detection rules to the SMF.

Step 406: judging whether the session information of the session establishment request of the UE conforms to the session detection rule, and if so, executing step 407 to step 408; if the session information of the session establishment request of the UE does not conform to the session detection rule, step 409 to step 410 are performed.

Step 407: the SMF sends detection information to the UPF.

Wherein the detection information is determined based on a session detection rule. The detection information includes: detecting a period, first information and a processing mechanism of the first information; the first information includes characteristic information of data that is allowed to be put through. Illustratively, the mechanism for processing the first information comprises: and the processing mechanism of the first information can not be detected in the detection period.

Step 408: the SMF sends a response message (i.e. the second response message in the foregoing embodiment) to the UE, which characterizes that the session establishment is successful; the response message for representing the successful session establishment is sent to the UE through the AMF.

Step 409: the SMF sends a response message (i.e. the first response message in the foregoing embodiment) to the UE, which characterizes the session establishment rejection; the response message for representing the successful session establishment is sent to the UE through the AMF. Optionally, the response message further includes a reason value for rejection.

Step 410: after receiving the first response message, the UE re-matches the URSP and re-initiates a session establishment request to the SMF based on the cause value in the first response message; wherein the session establishment request includes information related to the default slice and the default DNN.

FIG. 5 is a schematic diagram illustrating an interaction flow of a session data processing method according to an embodiment of the present invention; as shown in fig. 5, this example is based on the example shown in fig. 4, and after step 408, the UE accesses the application platform or the server from the user plane, and further may further include:

step 411: and the UPF detects the media stream/data packet of the UE based on the first information in the detection information, and only the media stream/data packet which conforms to the first information is allowed to pass through.

Step 412: the UPF detects the media stream/data packet of the UE based on the detection information, and judges whether the first information of the user plane of the session is detected or not in a specified period; in case the first information is not detected within the specified period, step 413 is performed: and reporting a detection result to the SMF, wherein the detection result comprises a relevant indication that the first information is not detected.

Step 414: the SMF releases the session.

FIG. 6 is a third schematic interaction flow diagram of a session data processing method according to an embodiment of the present invention; as shown in fig. 6, the present example is based on the example shown in fig. 4 or fig. 5, and after step 408, the UE accesses the application platform or the server from the user plane, and further may further include:

Step 415: the UPF detects the media stream/data packet of the UE based on the detection information, and judges whether the first information of the session is detected or not in a specified period; in the case where the first information of the session is detected within a specified period, the detection for the first information is stopped.

The embodiment of the invention also provides a session data processing device, which is exemplarily applied to the SMF. FIG. 7 is a first schematic diagram illustrating a first exemplary configuration of a session data processing apparatus according to an embodiment of the present invention; as shown in fig. 7, the apparatus includes: a first receiving unit 51, a first acquiring unit 52, a first determining unit 54, and a first transmitting unit 53; wherein the content of the first and second substances,

the first receiving unit 51 is configured to receive a session establishment request initiated by a user equipment UE;

the first obtaining unit 52 is configured to obtain a session detection rule;

the first determining unit 54 is configured to determine detection information based on the session detection rule;

the first sending unit 53 is configured to send the detection information to the UPF; the detection information includes: first information and a processing mechanism for the first information; the first information includes characteristic information of data that is allowed to be put through.

In some optional embodiments of the present invention, the first obtaining unit 52 is configured to send a first request message to a PCF, and obtain, based on the first request message, a session detection rule sent by the PCF; the session detection rule is generated by the PCF based on routing policies obtained from the UDR relating to session information of the session establishment request and session information of the session establishment request obtained from the SMF.

In some optional embodiments of the present invention, the first obtaining unit 52 is configured to send a second request message to the PCF, and obtain, based on the second request message, a routing policy that is sent by the PCF and is related to the session information of the session establishment request; the routing policy is obtained by the PCF from the UDR; and generating a session detection rule based on the routing strategy and the session information of the session establishment request.

In some optional embodiments of the present invention, the first sending unit 53 is further configured to, when the session information of the session establishment request does not comply with the session detection rule, send, by the SMF, a first response message characterizing a session establishment rejection for the session establishment request to the UE.

In some optional embodiments of the present invention, the first sending unit 53 is further configured to, when the session information of the session establishment request conforms to the session detection rule, send, by the SMF, a second response message to the UE, where the second response message is indicative of successful session establishment for the session establishment request.

In some optional embodiments of the invention, the first response message further comprises a cause value indicating a reason for session establishment rejection; the cause value is used to indicate that the UE re-matches the URSP.

In some optional embodiments of the present invention, the first response message further includes new session information and a session reestablishment indication, and the session reestablishment indication is used for the UE to reinitiate the session establishment request according to the new session information.

In some optional embodiments of the invention, the session information comprises at least one of: slice identification, DNN, session identification, session type, service and session continuity mode, session management capability;

In some optional embodiments of the invention, the mechanism for processing the first information comprises: a processing mechanism for not detecting the first information.

In some optional embodiments of the invention, the detection information further includes information related to the detection duration.

In the embodiment of the present invention, the first determining Unit 54 in the apparatus may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Micro Control Unit (MCU), or a Programmable Gate Array (FPGA) in practical application; the first receiving unit 51, the first acquiring unit 52 and the first transmitting unit 53 of the device can be implemented by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a transceiving antenna in practical application.

The embodiment of the invention also provides a session data processing device, which is applied to the PCF. FIG. 8 is a schematic diagram illustrating a second exemplary embodiment of a session data processing apparatus; as shown in fig. 8, the apparatus includes: a second acquisition unit 61 and a second transmission unit 62; wherein the content of the first and second substances,

the second obtaining unit 61 is configured to obtain a session detection rule; the session detection rule is obtained after User Equipment (UE) initiates a session establishment request; the session detection rule is generated based on a routing policy related to session information of the session establishment request and the session information of the session establishment request;

the second sending unit 62 is configured to send the session detection rule to the SMF; and the session detection rule is used for the SMF to check and match the session information of the session establishment request.

In some optional embodiments of the present invention, the second obtaining unit 61 is configured to, after receiving the session information of the session establishment request sent by the SMF, query a routing policy related to the session information of the session establishment request.

In the embodiment of the present invention, the second obtaining unit 61 in the apparatus may be implemented by a CPU, a DSP, an MCU, or an FPGA in practical application; the second sending unit 62 of the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, etc.) and a transceiving antenna in practical application.

The embodiment of the invention also provides a session data processing device, which is applied to UPF. FIG. 9 is a third schematic diagram illustrating a structure of a session data processing apparatus according to an embodiment of the present invention; as shown in fig. 9, the apparatus includes: a second receiving unit 71 and a detecting unit 72; wherein the content of the first and second substances,

the second receiving unit 71 is configured to obtain detection information sent by the SMF; the detection information includes: first information and a processing mechanism for the first information; the first information comprises characteristic information of the data allowed to be put through; the detection information is determined based on a session detection rule;

the detecting unit 72 is configured to detect service data of the UE based on the detection information after the session of the UE is successfully established.

In some optional embodiments of the present invention, the detecting unit 72 is configured to detect service data of the UE based on the detection information, and only allow a media stream and a data packet containing the first information to pass through.

In some optional embodiments of the invention, the detection information is determined based on a session detection rule.

In some optional embodiments of the present invention, as shown in fig. 10, the apparatus further includes a third sending unit 73, configured to send a detection result to the SMF when the first information is not detected by the detecting unit 72; the detection result is used for enabling the SMF to release the session with the UE.

In some optional embodiments of the present invention, the detecting unit 72 is configured to stop the detection of the first information when the first information is detected.

In the embodiment of the present invention, the detection unit 72 in the apparatus may be implemented by a CPU, a DSP, an MCU, or an FPGA in practical application; the second receiving unit 71 and the third sending unit 73 in the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a transceiving antenna in practical application.

It should be noted that: in the session data processing apparatus provided in the above embodiment, when performing session data processing, only the division of each program module is exemplified, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the apparatus may be divided into different program modules to complete all or part of the processing described above. In addition, the session data processing apparatus provided in the foregoing embodiment and the session data processing method embodiment belong to the same concept, and specific implementation processes thereof are described in the method embodiment and are not described herein again.

The embodiment of the invention also provides a network device, which may specifically be the SMF, PCF or UPF in the foregoing embodiments. Fig. 11 is a schematic diagram of a hardware structure of a network device according to an embodiment of the present invention, as shown in fig. 11, the network device includes a memory 82, a processor 81, and a computer program stored in the memory 82 and operable on the processor 81, and when the processor 81 executes the computer program, the steps of the session data processing method applied to SMF, PCF, or UPF according to an embodiment of the present invention are implemented.

Optionally, one or more network interfaces 83 may also be included in the network device. The various components in the network device may be coupled together by a bus system 84. It will be appreciated that the bus system 84 is used to enable communications among the components. The bus system 84 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 84 in FIG. 11.

It will be appreciated that the memory 82 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 82 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The method disclosed in the above embodiments of the present invention may be applied to the processor 81, or implemented by the processor 81. The processor 81 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 81. The processor 81 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 81 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 82, and the processor 81 reads the information in the memory 82 and performs the steps of the aforementioned methods in conjunction with its hardware.

In an exemplary embodiment, the network Device may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

In an exemplary embodiment, the present invention further provides a computer readable storage medium, such as a memory 82, comprising a computer program, which is executable by a processor 81 of a network device to perform the steps of the foregoing method. The computer readable storage medium can be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.

The computer-readable storage medium provided by the embodiment of the present invention stores thereon a computer program, which when executed by a processor, implements the steps of the session data processing method applied to SMF, PCF, or UPF described in the embodiment of the present invention.

The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to obtain new method embodiments.

Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.

The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.

Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A session data processing method is characterized in that the method is applied to a Session Management Function (SMF); the method comprises the following steps:

the SMF obtains a session detection rule;

2. The method of claim 1, wherein the SMF obtains a session detection rule comprising:

3. The method of claim 1, wherein the SMF obtains a session detection rule comprising:

4. The method of claim 1, further comprising:

and when the session information of the session establishment request does not accord with the session detection rule, the SMF sends a first response message which is used for representing session establishment rejection aiming at the session establishment request to the UE.

5. The method of claim 1, further comprising:

and when the session information of the session establishment request conforms to the session detection rule, the SMF sends a second response message for representing successful session establishment of the session establishment request to the UE.

6. The method according to claim 4, wherein the first response message further comprises a cause value indicating a reason for session establishment rejection; the cause value is used to indicate that the UE re-matches the URSP.

7. The method of claim 4, wherein the first response message further includes new session information and a session reestablishment indication, and wherein the session reestablishment indication is used for the UE to reinitiate the session establishment request according to the new session information.

8. The method according to claim 4 or 5, wherein the session information comprises at least one of: slice identification, data network name DNN, session identification, session type, service and session continuity mode and session management capability;

9. The method of claim 1, wherein the mechanism for processing the first information comprises: a processing mechanism for not detecting the first information.

10. The method of claim 1, wherein the detection information further comprises information related to a detection duration.

11. A session data processing method, characterized in that said method is applied to PCF; the method comprises the following steps:

12. The method of claim 11, wherein the PCF obtains a session detection rule comprising:

13. A session data processing method is characterized in that the method is applied to UPF; the method comprises the following steps:

14. The method of claim 13, wherein the mechanism for processing the first information comprises: a processing mechanism for not detecting the first information.

15. The method of claim 13, wherein the UPF detects the traffic data of the UE based on the detection information, and wherein the detection comprises:

and the UPF detects the service data of the UE based on the detection information and only allows the media stream and the data packet containing the first information to pass through.

16. The method of claim 13, wherein the detection information is determined based on a session detection rule.

17. The method of claim 13, wherein the UPF detects the traffic data of the UE based on the detection information, and wherein the detection comprises:

when the first information is not detected, sending a detection result to the SMF; the detection result is used for enabling the SMF to release the session with the UE.

18. The method of claim 13, wherein the UPF detects the traffic data of the UE based on the detection information, and wherein the detection comprises:

and stopping the detection of the first information when the first information is detected.

19. The method of claim 13, wherein the detection information further comprises information related to a detection duration.

20. A session data processing apparatus, characterized in that said apparatus is applied to SMF; the device comprises: the device comprises a first receiving unit, a first acquiring unit, a first determining unit and a first sending unit; wherein the content of the first and second substances,

the first obtaining unit is used for obtaining a session detection rule;

21. The apparatus of claim 20, wherein the first obtaining unit is configured to send a first request message to a PCF, and obtain a session detection rule sent by the PCF based on the first request message; the session detection rule is generated by the PCF based on routing policies obtained from the UDR relating to session information of the session establishment request and session information of the session establishment request obtained from the SMF.

22. The apparatus of claim 20, wherein the first obtaining unit is configured to send a second request message to the PCF, and obtain, based on the second request message, a routing policy related to session information of the session establishment request sent by the PCF; the routing policy is obtained by the PCF from the UDR; and generating a session detection rule based on the routing strategy and the session information of the session establishment request.

23. The apparatus of claim 20, wherein the first sending unit is further configured to send, to the UE, a first response message characterizing a session establishment rejection for the session establishment request when the session information of the session establishment request does not comply with the session detection rule.

24. The apparatus of claim 20, wherein the first sending unit is further configured to send, to the UE, a second response message indicating that session establishment is successful for the session establishment request, when the session information of the session establishment request conforms to the session detection rule.

25. The apparatus according to claim 23, wherein the first response message further comprises a cause value indicating a reason for session establishment rejection; the cause value is used to indicate that the UE re-matches the URSP.

26. The apparatus of claim 23, wherein the first response message further includes new session information and a session reestablishment indication, and wherein the session reestablishment indication is used for the UE to reinitiate the session establishment request according to the new session information.

27. The apparatus according to claim 23 or 24, wherein the session information comprises at least one of: slice identification, data network name DNN, session identification, session type, service and session continuity mode and session management capability;

28. The apparatus of claim 20, wherein the mechanism for processing the first information comprises: a processing mechanism for not detecting the first information.

29. The apparatus of claim 20, wherein the detection information further comprises information related to a detection duration.

30. A session data processing apparatus, characterized in that said apparatus is applied to PCF; the device comprises: a second acquiring unit and a second transmitting unit; wherein the content of the first and second substances,

31. The apparatus of claim 30, wherein the second obtaining unit is configured to, after receiving the session information of the session establishment request sent by the SMF, query a routing policy related to the session information of the session establishment request.

32. A session data processing apparatus, characterized in that said apparatus is applied to UPF; the device comprises: a second receiving unit and a detecting unit; wherein the content of the first and second substances,

the second receiving unit is used for obtaining detection information sent by the SMF; the detection information includes: detecting a period, first information and a processing mechanism of the first information; the first information comprises characteristic information of the data allowed to be put through; the detection information is determined based on a session detection rule;

33. The apparatus of claim 32, wherein the mechanism for processing the first information comprises: a processing mechanism for not detecting the first information.

34. The apparatus of claim 32, wherein the detecting unit is configured to detect the service data of the UE based on the detection information, and only allow a media stream and a data packet containing the first information to pass through.

35. The apparatus of claim 32, wherein the detection information is determined based on a session detection rule.

36. The apparatus of claim 32, further comprising a third sending unit, configured to send a detection result to the SMF when the first information is not detected by the detecting unit; the detection result is used for enabling the SMF to release the session with the UE.

37. The apparatus of claim 32, wherein the detecting unit is configured to stop detecting the first information when the first information is detected.

38. The apparatus of claim 32, wherein the detection information further comprises information related to a detection duration.

39. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 10; or the program, when executed by a processor, implements the steps of the method of claim 11 or 12; alternatively, the program when executed by a processor implements the steps of the method of any one of claims 13 to 19.

40. A network device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the method of any one of claims 1 to 10; or the processor, when executing the program, performs the steps of the method of any of claims 11 or 12; alternatively, the processor implements the steps of the method of any one of claims 13 to 19 when executing the program.