CN114466347A - Data message processing method and device - Google Patents

Data message processing method and device Download PDF

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Publication number
CN114466347A
CN114466347A CN202210022772.XA CN202210022772A CN114466347A CN 114466347 A CN114466347 A CN 114466347A CN 202210022772 A CN202210022772 A CN 202210022772A CN 114466347 A CN114466347 A CN 114466347A
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rule
network element
parameter value
configuration item
user terminal
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CN114466347B (en
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曹静
陈寅
苗艳敏
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Hytera Communications Corp Ltd
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Hytera Communications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/141—Setup of application sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The application relates to a data message processing method and device, and relates to the technical field of wireless communication. The method comprises the following steps: when a strategy request message created by a session is received, acquiring characteristic information of a user terminal from the strategy request message; determining a target header enhancement rule according to the characteristic information of the user terminal; and issuing the target head enhancement rule to a Session Management Function (SMF) network element so that the SMF network element transmits the target head enhancement rule to a User Plane Function (UPF) network element, wherein the UPF network element is used for processing the received data message according to the target head enhancement rule. Therefore, the authorization and the issuing of the head enhancement rule can be realized by utilizing the PCF network element without realizing the authorization and the issuing of the head enhancement rule through the SMF network element or the UPF network element, so that the SMF network element or the UPF network element can better realize the functions of the SMF network element or the UPF network element, and the functional load of the SMF network element or the UPF network element and the complexity of realizing the network element capability are reduced.

Description

Data message processing method and device
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a data message processing method and apparatus.
Background
Since the hypertext Transfer Protocol (HTTP) is plaintext transmission, and transmission contents are easily sniffed or tampered and do not have security guarantee, the hypertext Transfer Protocol over secure session Layer (HTTPs) based on the SSL/TLS Protocol has become the mainstream of the internet Web (World Wide Web) system communication Protocol since 1999, and is widely applied to the 5G Core Network (5G Core Network, abbreviated as 5 GC). At present, there are two ways for a UPF (User Plane Function) network element of a 5G core network to obtain an HTTPS header enhancement rule: the first mode is that the SMF (Session Management Function) network element analyzes the number of the user, matches the number analysis rule corresponding to the user, retrieves the HTTPS head enhancement rule according to the number analysis rule corresponding to the user, and issues the HTTPS head enhancement rule to the UPF network element; the second way is that the HTTPS header enhancement rule corresponding to each user is configured locally by the operator in the UPF. However, as an SMF network element of a 5G core network, the core functions of the SMF network element are mainly session management, UE (User Equipment) IP address allocation and management, UPF selection and control, and the like; the UPF network element as a 5G core network mainly has the core functions of providing an IP anchor point, UPF data detection and routing distribution data, QoS execution, usage reporting, legal monitoring and the like. That is, in the prior art, the authorization and issuing operation setting of the header enhancement rule is completed by the SMF network element or the UPF network element, which obscures the functions of the SMF network element or the UPF network element, and increases the complexity of the realization of the functional load and the network element capability of the SMF network element or the UPF network element.
Disclosure of Invention
The application provides a data message processing method and a data message processing device, which are used for solving the problems that in the prior art, the authorization and issuing operation setting of a header enhancement rule is finished by an SMF (simple message format) network element or a UPF (unified Power Format) network element, the corresponding functions of the SMF network element or the UPF network element are obscured, and the functional load of the SMF network element or the UPF network element and the complexity of realizing the network element capability are increased.
In a first aspect, the present application provides a data packet processing method, which is applied to a policy control function PCF network element, and the method includes:
when a strategy request message created by a session is received, acquiring characteristic information of a user terminal from the strategy request message;
determining a target header enhancement rule according to the characteristic information of the user terminal;
and sending the target head enhancement rule to a Session Management Function (SMF) network element so that the SMF network element transmits the target head enhancement rule to a User Plane Function (UPF) network element, wherein the UPF network element is used for processing a received data message according to the target head enhancement rule.
Optionally, the feature information of the user terminal includes a subscription permanent identifier corresponding to the user terminal;
the received policy request message for session creation includes:
receiving a policy request message sent by a Session Management Function (SMF) network element, wherein the policy request message is sent when the SMF network element selects the PCF network element and then initiates a session creation request policy authorization process to the PCF network element under the condition that a Protocol Data Unit (PDU) session of a user terminal completes authentication, and the policy request message carries a subscription permanent identifier corresponding to the user terminal.
Optionally, the determining a target header enhancement rule according to the feature information of the ue includes:
and determining a target header enhancement rule according to the subscription permanent identifier corresponding to the user terminal and preset rule configuration information, wherein the preset rule configuration information is used for representing the corresponding relation between the subscription permanent identifier and the header enhancement rule.
Optionally, the preset rule configuration information includes a configuration item corresponding to at least one rule and a parameter value corresponding to the configuration item, where the configuration item includes at least one of: a data network name, a requested 5QI, a priority of assigning and retaining priority, a subscription permanent identifier, a permanent device identifier, a policy control request event, and an application identity;
the determining a target header enhancement rule according to the subscription permanent identifier and preset rule configuration information corresponding to the user terminal includes:
acquiring a first parameter value of each configuration item carried in the strategy request;
matching the first parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result;
and determining the target head enhancement rule according to the matching result.
Optionally, the matching the first parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result includes:
judging whether a first parameter value of a current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information;
under the condition that a first parameter value of a current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information, adding one to a weight value of the rule, taking a next configuration item as a new current configuration item, and executing the step of judging whether the first parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
when the first parameter value of the current configuration item is not matched with the parameter value of the current configuration item in the preset rule configuration information, the weight value of the rule is reset to zero, and the next rule is matched;
and determining the weight value corresponding to each rule as the matching result.
Optionally, the method further comprises:
receiving a service request sent by an Application Function (AF) network element;
acquiring an IP address corresponding to the user terminal carried in the service request;
determining an authorized PCC rule and/or a target head enhancement rule according to the IP address;
and issuing the authorized PCC rules and/or the target head enhancement rules to the SMF network element so that the authorized PCC rules and/or the target head enhancement rules are analyzed and transmitted to the UPF network element when the SMF network element receives a service request and creates a special PDU message.
Optionally, the determining, according to the IP address, an authorized PCC rule and/or a target header enhancement rule includes:
and determining the PCC rules and/or the target head enhancement rules which can be authorized according to the IP address corresponding to the user terminal and preset rule configuration information, wherein the preset rule configuration information is used for representing the corresponding relation between the IP address and the PCC rules and/or representing the corresponding relation between the IP address and the head enhancement rules.
Optionally, the preset rule configuration information includes a configuration item corresponding to at least one rule and a parameter value corresponding to the configuration item, where the configuration item includes at least one of: IP address, media type, media priority, Flow state, service information state, requested uplink maximum guaranteed bandwidth, requested downlink maximum guaranteed bandwidth, requested uplink minimum guaranteed bandwidth and requested downlink minimum guaranteed bandwidth;
the acquiring the IP address corresponding to the user terminal carried in the service request, and determining an authorized PCC rule and/or a target header enhancement rule according to the IP address corresponding to the user terminal and preset rule configuration information includes:
acquiring a second parameter value of each configuration item carried in the service request;
matching the second parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result;
and determining the PCC rules and/or the target head enhancement rules which can be authorized according to the matching result.
Optionally, the matching the second parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result includes:
judging whether a second parameter value of the current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information;
under the condition that a second parameter value of a current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information, adding one to a weight value of the rule, taking a next configuration item as a new current configuration item, and executing the step of judging whether the second parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
when the second parameter value of the current configuration item is not matched with the parameter value of the current configuration item in the preset rule configuration information, the weight value of the rule is reset to zero, and the next rule is matched;
and determining the weight value corresponding to each rule as the matching result.
In a second aspect, the present application further provides a data packet processing apparatus, which is applied to a policy control function PCF network element, and the apparatus includes:
the first acquisition module is used for acquiring the characteristic information of the user terminal from the strategy request message when the strategy request message created by the session is received;
the first determining module is used for determining a target header enhancement rule according to the characteristic information of the user terminal;
a first sending module, configured to send the target header enhancement rule to a session management function SMF network element, so that the SMF network element transmits the target header enhancement rule to a user plane function UPF network element, where the UPF network element is configured to process a received data packet according to the target header enhancement rule.
In a third aspect, the present application further provides a core network, where the core network includes a policy control function PCF network element;
wherein, the PCF network element is configured to perform the steps of the data packet processing method according to any embodiment of the first aspect.
In a fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the data packet processing method according to any one of the embodiments of the first aspect.
In the embodiment of the application, the PCF network element may obtain the characteristic information of the user terminal from the policy request message when receiving the policy request message for session creation; determining a target header enhancement rule according to the characteristic information of the user terminal; and sending the target head enhancement rule to a Session Management Function (SMF) network element so that the SMF network element transmits the target head enhancement rule to a User Plane Function (UPF) network element, wherein the UPF network element is used for processing a received data message according to the target head enhancement rule. By the method, the authorization and the issuing of the header enhancement rule can be realized by the PCF network element without realizing the authorization and the issuing of the header enhancement rule by the SMF network element or the UPF network element, so that the SMF network element or the UPF network element can better realize the functions of the SMF network element or the UPF network element, the functional load of the SMF network element or the UPF network element and the complexity of realizing the network element capability are reduced, meanwhile, the reasonability of the rule authorization in a protocol constraint frame can be improved, and the function of quickly and accurately issuing the header enhancement rule is realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a data packet processing method according to an embodiment of the present application;
fig. 2 is a flowchart of an authorized sending enhancement rule issued by a PCF network element in a user online process according to an embodiment of the present application;
fig. 3 is a flowchart of a PCF network element authorizing a header enhancement rule to be issued in a service creation process according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a data packet processing apparatus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of a data packet processing method according to an embodiment of the present application. As shown in fig. 1, the data packet processing method is applied to a policy control function PCF network element, and the method may specifically include the following steps:
step 101, when receiving a policy request message for session creation, obtaining feature information of a user terminal from the policy request message.
It should be noted that the data packet processing method provided in this embodiment of the present application is applied to a policy control function PCF network element, and the PCF network element belongs to a fifth generation mobile communication technology (5th generation mobile networks or 5th generation wireless systems, referred to as 5G for short) communication system. As shown in fig. 2, the 5G communication system may include a User Equipment (UE), a Radio Access Network (RAN), an Access and Mobility Management (AMF) Network element, a User Plane Function (UPF) Network element, a Session Management Function (SMF) Network element, a Policy Control Function (PCF) Network element, a Unified Data Management (UDM) Network element, and the like, where each Network element may be communicatively connected. In the 5G communication system, when a user terminal can initiate a Protocol Data Unit (PDU) session creation request to an AMF network element, the AMF network element completes registration of the user terminal, selects an SMF network element, and initiates a PDU session creation procedure to the SMF network element after the selection of the SMF network element is successful; after receiving the PDU session creation process, the SMF network element may request a Subscription data from the UDM network element, where the request message may carry a Subscription Permanent Identifier (SUPI) of the user terminal, and the UDM network element searches for the user Subscription data corresponding to the SUPI and replies a response message carrying the Subscription data to the SMF network element. At this point, the authentication process of the PDU session is completed. After the PDU session authentication process is completed, the PCF network element completes the determination of the head enhancement rule and issues the head enhancement rule to the SMF network element, further, the SMF network element selects UPF, and transmits the head enhancement rule to the UPF network element successfully selected after the UPF is successfully selected, and the UPF network element processes the received data message according to the head enhancement rule.
Specifically, when the PCF network element completes the determination and issuing of the header enhancement rule, the PCF network element needs to obtain the feature information of the user terminal when receiving the policy request message for session creation. The characteristic information of the ue may include, but is not limited to, a permanent subscription Identifier corresponding to the ue, an IP address corresponding to the ue, a Device Identifier corresponding to the ue, such as a Device ID, an International Mobile Equipment Identity (IMEI), an advertisement Identifier (Identifier For Advertising, IDFA), a Unique Device Identifier (UDID), and a Universal Unique Identifier (UUID).
The mode of obtaining the characteristic information of the user terminal can be that the PCF network element directly sends a characteristic information obtaining request to the user terminal, and then the user terminal responds to the request and feeds back the characteristic information to the PCF network element; or other network elements, such as an SMF network element or an AF network element, may send the feature information of the user terminal to the PCF network element in the user terminal online process or the service creation process, which is not specifically limited in this application.
Step 102, determining a target header enhancement rule according to the characteristic information of the user terminal.
After the PCF network element obtains the feature information of the user terminal, the feature information of the user terminal may be matched with the preset rule configuration information in the PCF network element, so as to find out the header enhancement rule matched with the feature information of the user terminal as the target header enhancement rule.
It should be noted that the preset rule configuration information may be different header enhancement rules set based on the subscription permanent identifier, such as the header enhancement rule 1 corresponding to the subscription permanent identifier 1, the header enhancement rule 2 corresponding to the subscription permanent identifier 2, the header enhancement rule 3 corresponding to the subscription permanent identifier 3, and the like, so that after acquiring the subscription permanent identifier of the user terminal, the PCF network element may determine the target header enhancement rule of the user terminal according to the subscription permanent identifier. The preset rule configuration information may also be different header enhancement rules set based on the IP address, such as a header enhancement rule 1 corresponding to the IP address 1, a header enhancement rule 2 corresponding to the IP address 2, a header enhancement rule 3 corresponding to the IP address 3, and the like, so that the PCF network element may also determine the target header enhancement rule of the user terminal according to the IP address after acquiring the IP address of the user terminal. Of course, the preset rule configuration information may also be set based on the subscription permanent identifier and the IP address, or based on other user terminal characteristic information, which is not specifically limited in the present application.
Step 103, the target header enhancement rule is sent to the session management function SMF network element, so that the SMF network element transmits the target header enhancement rule to the user plane function UPF network element, and the UPF network element is configured to process the received data packet according to the target header enhancement rule.
After determining the target head enhancement rule, the PCF network element may issue the target head enhancement rule to the SMF network element, so that the SMF network element may transmit the target head enhancement rule to the UPF network element, and the UPF network element processes the received data packet according to the target head enhancement rule.
In this embodiment, the authorization and the issuing of the header enhancement rule can be realized by using the PCF network element, and the authorization and the issuing of the header enhancement rule are not required to be realized by using the SMF network element or the UPF network element, so that the SMF network element or the UPF network element can better realize the functions of the SMF network element or the UPF network element, reduce the functional load of the SMF network element or the UPF network element and the complexity of realizing the network element capability, and simultaneously, the reasonability of the rule authorization in the protocol constraint frame can be improved, and the function of quickly and accurately issuing the header enhancement rule can be realized.
Further, the characteristic information of the user terminal comprises a subscription permanent identifier corresponding to the user terminal;
the step of receiving the policy request message created by the session includes:
receiving a policy request message sent by a Session Management Function (SMF) network element, wherein the policy request message is sent when the SMF network element selects a PCF network element and then initiates a session creation request policy authorization process to the PCF network element under the condition that the Protocol Data Unit (PDU) session of a user terminal completes authentication, and the policy request message carries a subscription permanent identifier corresponding to the user terminal
In an embodiment, a subscription permanent identifier corresponding to the user terminal may be used as the characteristic information of the user terminal. When a user terminal can initiate a Protocol Data Unit (PDU) session establishment request to an AMF network element, the AMF network element completes the registration of the user terminal, selects an SMF network element, and initiates a PDU session establishment flow to the SMF network element after the SMF network element is successfully selected; after receiving the PDU session creation process, the SMF network element may request the UDM network element for subscription data, where the request message may carry a subscription permanent identifier of the user terminal, and the UDM network element searches for user subscription data corresponding to the SUPI and replies a response message carrying the subscription data to the SMF network element. At this point, the authentication process of the PDU session is completed. After the PDU session authentication process is completed, the SMF network element selects the PCF network element, initiates a policy request message to the PCF network element, and carries a subscription permanent identifier corresponding to the user terminal in the policy request message. In this way, the PCF network element may obtain the subscription permanent identifier corresponding to the user terminal carried in the policy request message, and determine the target header enhancement rule that meets the user terminal based on the subscription permanent identifier, so as to implement the operation of completing authorization and issuing of the target header enhancement rule by the user terminal in the online process, as shown in fig. 2.
Further, the step of determining the target header enhancement rule according to the characteristic information of the user equipment includes:
and determining a target header enhancement rule according to the subscription permanent identifier corresponding to the user terminal and preset rule configuration information, wherein the preset rule configuration information is used for representing the corresponding relation between the subscription permanent identifier and the header enhancement rule.
In an embodiment, an operator may pre-configure a header enhancement rule in a PCF network element, for example, a corresponding header enhancement rule is set for each subscription permanent identifier, so that the PCF network element may match the obtained subscription permanent identifier corresponding to the user terminal with the subscription permanent identifier in the preset rule configuration information, and if the matching is successful, take the header enhancement rule as a target header enhancement rule.
Further, the preset rule configuration information includes a configuration item corresponding to at least one rule and a parameter value corresponding to the configuration item, and the configuration item includes at least one of the following items: a data network name, a requested 5QI, a priority of assigning and retaining priority, a subscription permanent identifier, a permanent device identifier, a policy control request event, and an application identity;
the step of determining the target header enhancement rule according to the subscription permanent identifier corresponding to the user terminal and the preset rule configuration information includes:
acquiring a first parameter value of each configuration item carried in the strategy request;
matching the first parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result;
and determining the target header enhancement rule according to the matching result.
In an embodiment, besides matching the subscription permanent identifier, other configuration items can be compatible for configuration, so as to obtain a more accurate target header enhancement rule. The preset rule configuration information may include configuration information of one or more rules, where each rule may include a Data Network Name (DNN), a requested 5QI, a Priority of Allocation and Retention Priority (ARP), a Subscription Permanent Identifier (SUPI), a Permanent device Identifier (PEI), a configuration item or a combination of multiple configuration items in a policy control request event and an application identity, and a parameter value corresponding to the configuration item. Here, the 5QI is defined in 3GPP specification 23.501 and is a scalar for pointing to a Quality of Service (QoS) characteristic of 5G.
For example, assuming that the data network name, the requested 5QI, the priority of assigning and retaining priority, the subscription permanent identifier, the permanent device identifier, the policy control request event, and the application id are taken together as configuration items of the preset rule configuration information, the rule is configured as shown in table 1 below:
Figure BDA0003463280240000061
Figure BDA0003463280240000071
the SMF network element sends a policy request to the PCF network element, wherein the policy request carries field information such as DNN, requested 5QI, ARP priority, SUPI, PEI, policy control request event (optional), application ID (optional) and the like. Therefore, each field information in the strategy request can be matched with the parameter value in the preset rule configuration information, the best matched target head enhancement rule is determined from the parameter value, and the target head enhancement rule is issued. It should be noted that, when determining the best matching target header enhancement rule, the determination may be performed according to the number of configuration items successfully matched, and may also be performed according to the priority order of each configuration item, which is not specifically limited in the present application.
Further, matching the first parameter value with parameter values of each configuration item in the preset rule configuration information to obtain a matching result, including:
judging whether the first parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
under the condition that the first parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information, adding one to the weight value of the rule, taking the next configuration item as a new current configuration item, and executing the step of judging whether the first parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
when the first parameter value of the current configuration item is not matched with the parameter value of the current configuration item in the preset rule configuration information, the weight value of the rule is reset to zero, and the next rule is matched;
and determining the weight value corresponding to each rule as a matching result.
In one embodiment, in determining the best matching target header enhancement rule, the determination may be made according to the number of configuration items successfully matched. The PCF network element may match each configuration item successfully, the weight value of the matching result is added with 1, all hits are hit, and the weight value is the largest. If one of the configuration items fails to be matched, the weight value is returned to 0, and then the next rule, namely the Policy and Charging Control (PCC) Policy derivation configuration with N7 ports is matched. And after the rules are completely traversed and matched once, selecting the rule with the largest weight value, and authorizing to issue the rule. By the method, the PCF network element can efficiently derive the target header enhancement rule according to the implemented rule derivation function with clear algorithm, and can finely distinguish the users to issue different header enhancement rules due to more set matching items, so that accurate issuing is realized.
Further, the data packet processing method further includes:
receiving a service request sent by an Application Function (AF) network element;
acquiring an IP address corresponding to a user terminal carried in a service request;
determining an authorized PCC rule and/or a target head enhancement rule according to the IP address;
and issuing the PCC rules and/or the target head enhancement rules which can be authorized to the SMF network element so that the SMF network element analyzes the PCC rules and/or the target head enhancement rules which can be authorized when receiving the special PDU message created by the service request and transmits the PCC rules and/or the target head enhancement rules to the UPF network element.
In an embodiment, an IP address corresponding to the user terminal may be used as the characteristic information of the user terminal. When a user terminal can initiate a Protocol Data Unit (PDU) session establishment request to an AMF network element, the AMF network element completes the registration of the user terminal, selects an SMF network element, and initiates a PDU session establishment flow to the SMF network element after the SMF network element is successfully selected; after receiving the PDU session creation process, the SMF network element may request the UDM network element for subscription data, where the request message may carry a subscription permanent identifier of the user terminal, and the UDM network element searches for user subscription data corresponding to the SUPI and replies a response message carrying the subscription data to the SMF network element. At this point, the authentication process of the PDU session is completed. After the PDU conversation authentication process is completed, the SMF network element selects the PCF network element, initiates a strategy request to the PCF network element, and carries a subscription permanent identifier corresponding to the user terminal in the strategy request. In this way, the PCF network element may obtain the subscription permanent identifier corresponding to the user terminal carried in the policy request, determine, based on the subscription permanent identifier, that the session rule conforms to the user terminal, return the session rule to the SMF network element, and the SMF network element receives the session rule returned by the PCF network element and stores the session rule. And further selecting UPF to complete the session creation process. Then, the PCF network element may receive a service request sent by an Application Function (AF) network element, where the service request carries an IP address of the user terminal. The PCF network element can obtain an IP address corresponding to the user terminal carried in the service request, determines a PCC rule and a target head enhancement rule which accord with the user terminal based on the IP address, and sends the PCC rule and the target head enhancement rule to the SMF network element, the SMF network element receives the service request and creates a special PDU message, analyzes an authorized PCC rule and/or a target head enhancement rule and transmits the PCC rule and/or the target head enhancement rule to the UPF network element. Finally, in the context of forwarding the data packet by the UPF network element, the data packet is processed according to the target header addition rule, so as to implement the operation of the user terminal completing the authorization and issuing of the target header enhancement rule in the service creation process, as shown in fig. 3.
Further, the step of determining an authorized PCC rule and/or a target header enhancement rule according to the IP address includes:
determining an authorized PCC rule and/or a target head enhancement rule according to an IP address corresponding to a user terminal and preset rule configuration information, wherein the preset rule configuration information is used for representing the corresponding relation between the IP address and the PCC rule and/or representing the corresponding relation between the IP address and the head enhancement rule.
In an embodiment, an operator may pre-configure a PCC rule and/or a header enhancement rule in a PCF network element, for example, set a corresponding PCC rule and/or a header enhancement rule for each IP address, so that the PCF network element may match an acquired IP address corresponding to a user terminal with an IP address in preset rule configuration information, use a PCC rule successfully matched as an authorized PCC rule, and/or use a header enhancement rule successfully matched as a target header enhancement rule.
Further, the preset rule configuration information includes a configuration item corresponding to at least one rule and a parameter value corresponding to the configuration item, and the configuration item includes at least one of the following items: IP address, media type, Flow state, service information state, requested uplink maximum guaranteed bandwidth, requested downlink maximum guaranteed bandwidth, requested uplink minimum guaranteed bandwidth and requested downlink minimum guaranteed bandwidth;
the step of obtaining the IP address corresponding to the user terminal carried in the service request, and determining an authorized PCC rule and/or a target header enhancement rule according to the IP address corresponding to the user terminal and preset rule configuration information includes:
acquiring a second parameter value of each configuration item carried in the service request;
matching the second parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result;
and determining an authorized PCC rule and/or a target head enhancement rule according to the matching result.
In an embodiment, besides matching the IP address, other configuration items may also be compatible for configuration, so as to obtain more accurate authorized PCC rules and/or target header enhancement rules. The preset rule configuration information may include configuration information of one or more rules, and each rule may include one or a combination of multiple configuration items in an IP address, a media type, a media priority, a Flow state, a service information state, a requested uplink maximum guaranteed bandwidth, a requested downlink maximum guaranteed bandwidth, a requested uplink minimum guaranteed bandwidth, and a requested downlink minimum guaranteed bandwidth, and a parameter value corresponding to the configuration item.
For example, assume that an IP address, a media type, a media priority, a Flow state, a service information state, a requested uplink maximum guaranteed bandwidth, a requested downlink maximum guaranteed bandwidth, a requested uplink minimum guaranteed bandwidth, and a requested downlink minimum guaranteed bandwidth are collectively used as configuration items of the preset rule configuration information, and a rule is configured as shown in table 2 below:
Figure BDA0003463280240000091
an IMS system P-CSCF network element (equivalent 5GC AF network element) sends a service request to a PCF network element, wherein the service request carries field information such as an IP address, a media type, a media priority, a Flow state (optional), a service information state optional), a requested uplink maximum guaranteed bandwidth optional), a requested downlink maximum guaranteed bandwidth optional), a requested uplink minimum guaranteed bandwidth optional) and a requested downlink minimum guaranteed bandwidth optional). Therefore, each field information in the service request can be matched with the parameter value in the preset rule configuration information, the authorized PCC rule and/or the target head enhancement rule are determined from the field information, and the authorized PCC rule and/or the target head enhancement rule are issued. It should be noted that, when determining an authorized PCC rule and/or a target header enhancement rule, the determination may be performed according to the number of configuration items successfully matched, and may also be performed according to the priority order of each configuration item, which is not specifically limited in the present application.
Further, matching the second parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result, including:
judging whether a second parameter value of the current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information;
under the condition that the second parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information, adding one to the weight value of the rule, taking the next configuration item as a new current configuration item, and executing the step of judging whether the second parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
when the second parameter value of the current configuration item is not matched with the parameter value of the current configuration item in the preset rule configuration information, the weight value of the rule is reset to zero, and the next rule is matched;
and determining the weight value corresponding to each rule as a matching result.
In one embodiment, in determining the best matching target header enhancement rule, the determination may be made according to the number of configuration items successfully matched. The PCF network element may match each configuration item successfully, the weight value of the matching result is added with 1, all hits are hit, and the weight value is the largest. If one of the configuration items fails to be matched, the weight value is returned to 0, and then the next rule is matched, namely Rx port PCC (Policy and Charging Control) Policy derivation configuration. And after the rules are completely traversed and matched once, selecting the rule with the largest weight value, and authorizing to issue the rule. By the method, the PCF network element can efficiently derive the target header enhancement rule according to the implemented rule derivation function with clear algorithm, and can finely distinguish the users to issue different header enhancement rules due to more set matching items, so that accurate issuing is realized.
In addition, the embodiment of the application also provides a data message processing device. Referring to fig. 4, fig. 4 is a schematic structural diagram of a data packet processing apparatus according to an embodiment of the present disclosure. As shown in fig. 4, the data packet processing apparatus 400 is applied to a policy control function PCF network element, and the data packet processing apparatus 400 includes:
a first obtaining module 401, configured to obtain, when receiving a policy request message created by a session, feature information of a user terminal from the policy request message;
a first determining module 402, configured to determine a target header enhancement rule according to feature information of a user equipment;
a first sending module 403, configured to send the target header enhancement rule to a session management function SMF network element, so that the SMF network element transmits the target header enhancement rule to a user plane function UPF network element, where the UPF network element is configured to process a received data packet according to the target header enhancement rule.
Optionally, the feature information of the user terminal includes a subscription permanent identifier corresponding to the user terminal;
the first obtaining module 401 is further configured to:
the method comprises the steps of receiving a strategy request message sent by a Session Management Function (SMF) network element, wherein the strategy request message is sent when the SMF network element selects a PCF network element and then initiates a session creation request strategy authorization flow to the PCF network element under the condition that the Protocol Data Unit (PDU) session of a user terminal is authenticated, and the strategy request message carries a subscription permanent identifier corresponding to the user terminal.
Optionally, the first determining module 402 includes:
the first determining submodule is used for determining a target header enhancement rule according to a subscription permanent identifier corresponding to the user terminal and preset rule configuration information, wherein the preset rule configuration information is used for representing the corresponding relation between the subscription permanent identifier and the header enhancement rule.
Optionally, the preset rule configuration information includes a configuration item corresponding to at least one rule and a parameter value corresponding to the configuration item, and the configuration item includes at least one of the following: a data network name, a requested 5QI, a priority of assigning and retaining priority, a subscription permanent identifier, a permanent device identifier, a policy control request event, and an application identity;
the first determination submodule includes:
a first obtaining unit, configured to obtain a first parameter value of each configuration item carried in the policy request;
the first matching unit is used for matching the first parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result;
and the first determining unit is used for determining the target header enhancement rule according to the matching result.
Optionally, the first matching unit is specifically configured to:
judging whether the first parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
under the condition that the first parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information, adding one to the weight value of the rule, taking the next configuration item as a new current configuration item, and executing the step of judging whether the first parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
when the first parameter value of the current configuration item is not matched with the parameter value of the current configuration item in the preset rule configuration information, the weight value of the rule is reset to zero, and the next rule is matched;
and determining the weight value corresponding to each rule as a matching result.
Optionally, the data packet processing apparatus 400 further includes:
the receiving module is used for receiving a service request sent by an Application Function (AF) network element;
the second acquisition module is used for acquiring the IP address corresponding to the user terminal carried in the service request;
the second determining module is used for determining an authorized PCC rule and/or an authorized target head enhancement rule according to the IP address;
and the second issuing module is used for issuing the PCC rules and/or the target head enhancement rules which can be authorized to the SMF network element so that the SMF network element analyzes the PCC rules and/or the target head enhancement rules which can be authorized and transmits the PCC rules and/or the target head enhancement rules to the UPF network element when receiving the special PDU message created by the service request.
Optionally, the second determining module further comprises:
and the second determining submodule is used for determining an authorized PCC rule and/or a target head enhancement rule according to the IP address corresponding to the user terminal and preset rule configuration information, wherein the preset rule configuration information is used for representing the corresponding relation between the IP address and the PCC rule and/or representing the corresponding relation between the IP address and the head enhancement rule.
Optionally, the preset rule configuration information includes a configuration item corresponding to at least one rule and a parameter value corresponding to the configuration item, and the configuration item includes at least one of the following: IP address, media type, media priority, Flow state, service information state, requested uplink maximum guaranteed bandwidth, requested downlink maximum guaranteed bandwidth, requested uplink minimum guaranteed bandwidth and requested downlink minimum guaranteed bandwidth;
the second determination submodule includes:
a second obtaining unit, configured to obtain a second parameter value of each configuration item carried in the service request;
the second matching unit is used for matching the second parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result;
and the second determining unit is used for determining the authorized PCC rules and/or the target head enhancement rules according to the matching result.
Optionally, the second matching unit is specifically configured to:
judging whether a second parameter value of the current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information;
under the condition that the second parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information, adding one to the weight value of the rule, taking the next configuration item as a new current configuration item, and executing the step of judging whether the second parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
when the second parameter value of the current configuration item is not matched with the parameter value of the current configuration item in the preset rule configuration information, the weight value of the rule is reset to zero, and the next rule is matched;
and determining the weight value corresponding to each rule as a matching result.
It should be noted that, when being executed, the data packet processing apparatus 400 may implement the steps of the data packet processing method provided in any one of the foregoing method embodiments, and can achieve the same technical effect, which is not described in detail herein.
In addition, the embodiment of the present application provides a core network, where the core network includes a policy control function PCF network element;
the PCF network element is configured to perform the steps of the data packet processing method provided in any of the foregoing method embodiments.
The present application 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 data packet processing method provided in any one of the foregoing method embodiments.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A data message processing method, applied to a policy control function PCF network element, the method comprising:
when a strategy request message created by a session is received, acquiring characteristic information of a user terminal from the strategy request message;
determining a target header enhancement rule according to the characteristic information of the user terminal;
and sending the target head enhancement rule to a Session Management Function (SMF) network element so that the SMF network element transmits the target head enhancement rule to a User Plane Function (UPF) network element, wherein the UPF network element is used for processing a received data message according to the target head enhancement rule.
2. The method according to claim 1, wherein the characteristic information of the user terminal comprises a subscription permanent identifier corresponding to the user terminal;
the received policy request message for session creation includes:
receiving a policy request message sent by a Session Management Function (SMF) network element, wherein the policy request message is sent when the SMF network element selects the PCF network element and then initiates a session creation request policy authorization process to the PCF network element under the condition that a Protocol Data Unit (PDU) session of a user terminal completes authentication, and the policy request message carries a subscription permanent identifier corresponding to the user terminal.
3. The method according to claim 2, wherein the determining a target header enhancement rule according to the feature information of the ue comprises:
and determining a target header enhancement rule according to the subscription permanent identifier corresponding to the user terminal and preset rule configuration information, wherein the preset rule configuration information is used for representing the corresponding relation between the subscription permanent identifier and the header enhancement rule.
4. The method according to claim 3, wherein the preset rule configuration information includes a configuration item corresponding to at least one rule and a parameter value corresponding to the configuration item, and the configuration item includes at least one of: a data network name, a requested 5QI, a priority of assigning and retaining priority, a subscription permanent identifier, a permanent device identifier, a policy control request event, and an application identity;
the determining a target header enhancement rule according to the subscription permanent identifier and preset rule configuration information corresponding to the user terminal includes:
acquiring a first parameter value of each configuration item carried in the strategy request;
matching the first parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result;
and determining the target head enhancement rule according to the matching result.
5. The method according to claim 4, wherein the matching the first parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result comprises:
judging whether a first parameter value of a current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information;
under the condition that a first parameter value of a current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information, adding one to a weight value of the rule, taking a next configuration item as a new current configuration item, and executing the step of judging whether the first parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
when the first parameter value of the current configuration item is not matched with the parameter value of the current configuration item in the preset rule configuration information, the weight value of the rule is reset to zero, and the next rule is matched;
and determining the weight value corresponding to each rule as the matching result.
6. The method of claim 1, further comprising:
receiving a service request sent by an Application Function (AF) network element;
acquiring an IP address corresponding to the user terminal carried in the service request;
determining an authorized PCC rule and/or a target head enhancement rule according to the IP address;
and issuing the authorized PCC rules and/or the target head enhancement rules to the SMF network element so that the authorized PCC rules and/or the target head enhancement rules are analyzed and transmitted to the UPF network element when the SMF network element receives a service request and creates a special PDU message.
7. The method of claim 6, wherein the determining, according to the IP address, an authorized PCC rule and/or a target header enhancement rule comprises:
and determining the authorized PCC rule and/or the target head enhancement rule according to the IP address corresponding to the user terminal and preset rule configuration information, wherein the preset rule configuration information is used for representing the corresponding relation between the IP address and the PCC rule and/or representing the corresponding relation between the IP address and the head enhancement rule.
8. The method according to claim 7, wherein the preset rule configuration information includes a configuration item corresponding to at least one rule and a parameter value corresponding to the configuration item, and the configuration item includes at least one of: IP address, media type, media priority, Flow state, service information state, requested uplink maximum guaranteed bandwidth, requested downlink maximum guaranteed bandwidth, requested uplink minimum guaranteed bandwidth and requested downlink minimum guaranteed bandwidth;
the acquiring the IP address corresponding to the user terminal carried in the service request, and determining an authorized PCC rule and/or a target header enhancement rule according to the IP address corresponding to the user terminal and preset rule configuration information includes:
acquiring a second parameter value of each configuration item carried in the service request;
matching the second parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result;
and determining the PCC rules and/or the target head enhancement rules which can be authorized according to the matching result.
9. The method according to claim 8, wherein the matching the second parameter value with the parameter value of each configuration item in the preset rule configuration information to obtain a matching result comprises:
judging whether a second parameter value of the current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information;
under the condition that a second parameter value of a current configuration item is matched with a parameter value of the current configuration item in the preset rule configuration information, adding one to a weight value of the rule, taking a next configuration item as a new current configuration item, and executing the step of judging whether the second parameter value of the current configuration item is matched with the parameter value of the current configuration item in the preset rule configuration information;
when the second parameter value of the current configuration item is not matched with the parameter value of the current configuration item in the preset rule configuration information, the weight value of the rule is reset to zero, and the next rule is matched;
and determining the weight value corresponding to each rule as the matching result.
10. A data message processing apparatus, for use in a policy control function, PCF, network element, the apparatus comprising:
the first acquisition module is used for acquiring the characteristic information of the user terminal from the strategy request message when the strategy request message created by the session is received;
the first determining module is used for determining a target header enhancement rule according to the characteristic information of the user terminal;
a first sending module, configured to send the target header enhancement rule to a session management function SMF network element, so that the SMF network element transmits the target header enhancement rule to a user plane function UPF network element, where the UPF network element is configured to process a received data packet according to the target header enhancement rule.
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