WO2019157968A1 - 一种通信方法、装置及系统 - Google Patents

一种通信方法、装置及系统 Download PDF

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Publication number
WO2019157968A1
WO2019157968A1 PCT/CN2019/074075 CN2019074075W WO2019157968A1 WO 2019157968 A1 WO2019157968 A1 WO 2019157968A1 CN 2019074075 W CN2019074075 W CN 2019074075W WO 2019157968 A1 WO2019157968 A1 WO 2019157968A1
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WIPO (PCT)
Prior art keywords
ethernet
network element
session
frame structure
available
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PCT/CN2019/074075
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English (en)
French (fr)
Inventor
朱强华
吴问付
李汉成
姚琦
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华为技术有限公司
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Publication of WO2019157968A1 publication Critical patent/WO2019157968A1/zh

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/03—Protocol definition or specification 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

Definitions

  • the embodiments of the present application relate to the field of communications technologies, and in particular, to a communication method, apparatus, and system.
  • the fifth generation mobile communication (5th-generation, 5G) system can support three kinds of session types: internet protocol (IP) session, etheric session and unstructured session.
  • IP internet protocol
  • the process of establishing an Ethernet session may include: 1.
  • a terminal for example, a user equipment (UE)
  • UE user equipment
  • AMF access and mobility management function
  • the session management function (SMF) sends an Ethernet session establishment request; 2.
  • the SMF obtains available media access control from the data network-authentication authorization and accounting (DN-AAA).
  • MAC Access control
  • the SMF provides a quality of service (QoS) rule for the UE according to the MAC address of the UE and the Ethernet frame structure, and provides forwarding for the user plane function (UPF). a forwarding rule; 4.
  • QoS quality of service
  • UPF user plane function
  • the SMF sets a filtering rule for the UPF according to the available MAC address list. 5.
  • the UPF discards the Ethernet packet of the non-legitimate MAC address according to the filtering rule, and receives the MAC address sent by the UE.
  • the MAC address of the UE is bound to a suitable protocol data unit (PDU) session. Row data forwarding.
  • Ethernet session is established as described above. However, if an Ethernet session is established according to the above procedure, only the Ethernet packets of the non-legitimate MAC address can be filtered, and different types of data packets cannot be filtered.
  • the technical problem to be solved by the embodiments of the present invention is to provide a communication method, device and system, which solve the problem that only the Ethernet data packets of non-legitimate MAC addresses can be filtered in the prior art.
  • a first aspect of the embodiments of the present application provides a communications apparatus, including:
  • the session management network element obtains the Ethernet frame structure information available for the Ethernet session
  • the session management network element generates a filtering rule according to the Ethernet frame structure information available in the Ethernet session, where the filtering rule includes the Ethernet frame structure information available for the Ethernet session;
  • the session management NE sends a filtering rule to the user plane function network element.
  • the session management network element generates a filtering rule according to the obtained Ethernet frame structure information of the obtained Ethernet session, and sends the filtering rule to the user plane function network element, so that the user plane function network element can be included in the Ethernet according to the filtering rule.
  • the frame structure information is filtered in a targeted manner.
  • the foregoing Ethernet frame structure information includes at least one of an Ethernet protocol type and a virtual local area network (VLAN) label.
  • the Ethernet protocol type is used to identify which type of Ethernet protocol or Ethernet protocol is encapsulated.
  • the Ethernet protocol type may be an Ethernet protocol type defined by 802.3 or an Ethernet protocol type defined by 802.1q.
  • the protocol encapsulated by the Ethernet protocol may be an IP protocol, an address resolution protocol, a reverse address resolution protocol, a multi-protocol label conversion protocol, or the like.
  • the VLAN tag may include at least one of a VLAN identification, a priority code point, and a drop eligibility indication.
  • the Ethernet frame structure information is used to distinguish different Ethernet protocol types or protocols encapsulated by the Ethernet protocol, so that the SMF generates filtering rules to achieve targeted filtering.
  • the session management network element may generate a forwarding rule at the same time as or after generating the filtering rule, and send a forwarding rule to the user plane function network element.
  • the session management network element may generate a forwarding rule according to the Ethernet frame structure information available for the Ethernet session, or may generate a forwarding rule according to the Ethernet filter and the Ethernet frame structure information available for the Ethernet session.
  • the forwarding rule can be used for forwarding processing of the user plane function network element.
  • the forwarding rule includes path forwarding information available for the Ethernet session and Ethernet frame structure information available for the Ethernet session, or path forwarding information included in the Ethernet session and Ethernet filtering available for the Ethernet session. , or include path forwarding information available for Ethernet sessions, Ethernet filters available for Ethernet sessions, and Ethernet frame structure information available for Ethernet sessions.
  • the forwarding rule is used by the policy control network element to forward the data packet to the path matching the Ethernet frame structure information of the data packet, so as to implement targeted forwarding according to the Ethernet frame structure information of the data packet.
  • the path forwarding information that is available in the Ethernet session includes forwarding path information between the user plane function network element and another user plane function network element, forwarding path information between the user plane function network element and the access network, and a user plane function network. At least one of forwarding path information between the element and the data network.
  • the forwarding path information between the user plane function network element and another user function network element may include N9 tunnel information.
  • the forwarding path information between the user plane function network element and the access network may include at least one of a tunnel identifier, an IP address of the access network, and a tunnel endpoint identifier.
  • the forwarding path information between the user plane function network element and the data network may include at least one of a data network access identifier, a data network name, a network address translation identifier/address, and N6 tunnel information.
  • the session management network element can obtain the Ethernet frame structure information that is available for the Ethernet session through the policy control network element. Specifically, the session management network element sends the Ethernet session initial to the policy control network element.
  • the available Ethernet frame structure information is used to receive the Ethernet frame structure information available from the Ethernet session of the policy control network element, and the Ethernet frame structure information available for the Ethernet session includes the Ethernet frame structure information initially available for the adjusted Ethernet session.
  • the Ethernet frame structure information that is initially available to the Ethernet session sent by the session management network element to the policy control network element may be the first Ethernet frame structure information that is available in the Ethernet session in the Ethernet session establishment request received by the session management network element, and the Ethernet session.
  • the available first Ethernet frame structure information may be the Ethernet frame structure information supported by the terminal; may be the second Ethernet frame structure information available in the Ethernet session in the subscription information received by the session management network element, and the second Ethernet frame structure available in the Ethernet session.
  • the information may be the Ethernet frame structure information that is signed by the terminal; the third Ethernet frame structure information that is available in the Ethernet session in the authentication authorization response received by the session management network element, and the third Ethernet frame structure information available in the Ethernet session may be the data network.
  • the supported Ethernet frame structure information may be the fourth Ethernet frame structure information available in the Ethernet session in the event report received by the session management network element, and the fourth Ethernet frame structure information available in the Ethernet session may be the Ethernet frame structure information available to the terminal; It can also be encapsulated by the Ethernet filter received by the session management network element. Ethernet frame structure information terminal and the like are available.
  • the session management unit may obtain the Ethernet frame structure information available for the Ethernet session by receiving the Ethernet session establishment request, where the Ethernet session establishment request includes the first Ethernet frame structure information available for the Ethernet session.
  • the first Ethernet frame structure information that is available for the Ethernet session may be the Ethernet frame structure information supported by the terminal, that is, the session management network element determines the Ethernet frame structure information supported by the terminal included in the Ethernet session establishment request as the Ethernet frame structure available for the Ethernet session. information.
  • the session management network element may obtain the Ethernet frame structure information that is available for the Ethernet session through the subscription information of the data management network element, where the subscription information is the subscription information of the terminal, including the Ethernet session.
  • the second Ethernet frame structure information, the second Ethernet frame structure information available for the Ethernet session may be the Ethernet frame structure information signed by the terminal, that is, the session management network element determines the Ethernet frame structure information signed by the terminal as the Ethernet session available for the Ethernet session. Frame structure information.
  • the session management network element may obtain the Ethernet frame structure information available for the Ethernet session by using an authentication authorization response of the authentication authorization network element, where the authentication authorization response includes the third Ethernet available for the Ethernet session.
  • the frame structure information, the third Ethernet frame structure information available for the Ethernet session may be the Ethernet frame structure information supported by the data network, that is, the session management network element determines the Ethernet frame structure information supported by the data network of the terminal as the Ethernet frame structure available for the Ethernet session. information.
  • the session management network element may obtain the Ethernet frame structure information available for the Ethernet session through the event report of the user plane function network element, and the event report includes the fourth Ethernet frame structure that is available for the Ethernet session.
  • the information that the fourth Ethernet frame structure information available to the Ethernet session may be the Ethernet frame structure information available to the terminal, and the session management network element determines the Ethernet frame structure information available to the terminal as the Ethernet frame structure information available for the Ethernet session.
  • the session authorization network when the session management network element obtains the Ethernet frame structure information that is available for the Ethernet session through the event report of the user plane function network element, the session authorization network first receives the authentication authorization response from the authentication and authorization network element.
  • the authentication authorization response includes an available media access control (MAC) list and a profile index; and then sends the available MAC address list and profile index to the policy control network element, so that the policy controls the network element generation.
  • An event trigger which includes a MAC address in an available MAC address list or an Ethernet frame structure information available to the terminal; and then sends the event trigger to the user plane function network element, so that the user plane function network element moves to the session management network.
  • the element sends an event report, and the event report includes the Ethernet frame structure information that is available to the terminal, so that the session management network element determines the Ethernet frame structure information available to the terminal as the Ethernet frame structure information available for the Ethernet session, and implements the Ethernet function through the user plane function network element. Ethernet frame structure information available for the session.
  • the session management network element may obtain the Ethernet frame structure information that is available for the Ethernet session through the terminal. Specifically, the session management network element first receives the authentication authorization response from the authentication and authorization network element.
  • the authentication authorization response includes an available MAC address list and a configuration file index; then the available MAC address list and the configuration file index are sent to the policy control network element, so that the policy control network element generates an event terminal routing policy, and the terminal routing
  • the policy includes Ethernet frame structure information available to the terminal; the session management network element then receives an Ethernet session modification request from the terminal, the Ethernet session modification request includes an Ethernet filter, the Ethernet filter encapsulates Ethernet frame structure information available to the terminal, and session management
  • the network element may determine the Ethernet frame structure information available to the terminal encapsulated by the Ethernet filter as the Ethernet frame structure information available for the Ethernet session, and may also send the Ethernet filter to the policy control network element, where the policy control network element is available to the terminal.
  • Ethernet frame structure information is adjusted and the strategy is Terminal NE adjusted feedback system available Ethernet frame
  • a second aspect of the embodiments of the present application provides a session management network element, where the session management network element has a function of implementing the method provided by the first aspect.
  • the functions can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the session management network element includes: a processing unit and a transceiver unit; a transceiver unit configured to acquire Ethernet frame structure information available for the Ethernet session; and a processing unit configured to use an Ethernet frame structure according to the Ethernet session
  • the information generation filtering rule includes the Ethernet frame structure information available for the Ethernet session, and the transceiver module is further configured to send the filtering rule to the user plane function network element.
  • the session management network element includes: a processor, a transceiver, and a memory, wherein the transceiver is configured to receive and transmit information, the memory stores computer execution instructions, and the processor passes through the bus and the memory and the transceiver Connecting, the processor executes a computer execution instruction stored in the memory, so that the session management network element performs the following operations: acquiring Ethernet frame structure information available for the Ethernet session; and generating a filtering rule according to the Ethernet frame structure information available for the Ethernet session, filtering
  • the rules include Ethernet frame structure information available for the Ethernet session; the filter rules are sent to the user plane function network element.
  • the principle and the beneficial effects of the session management network element can be solved by referring to the method and the beneficial effects of the first aspect. Therefore, the implementation of the session management network element can be implemented by referring to the method. It will not be repeated here.
  • a third aspect of embodiments of the present application provides a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the method of the first aspect described above.
  • a fourth aspect of an embodiment of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.
  • a fifth aspect of the embodiments of the present application provides a communication method, including:
  • the policy control network element receives the Ethernet frame structure information initially available from the Ethernet session of the session management network element;
  • the policy control network element adjusts the Ethernet frame structure information initially available in the Ethernet session to obtain the Ethernet frame structure information available in the Ethernet session, and the Ethernet frame structure information available in the Ethernet session includes the Ethernet frame structure information initially available in the adjusted Ethernet session;
  • the policy control network element sends the Ethernet frame structure information available to the Ethernet session to the session management network element.
  • the policy control network element may adjust the Ethernet frame structure information that is initially available in the Ethernet session to meet the network or application requirements, and send the adjusted Ethernet frame structure information that is initially available to the session management network element, and further It is convenient for the session management NE to generate filtering rules that meet network or application requirements.
  • the policy control network element generates an Ethernet filter available for the Ethernet session according to the Ethernet frame structure information available in the Ethernet session, in the case that the Ethernet frame structure information available to the Ethernet session is obtained, And sending an Ethernet filter available to the Ethernet session to the session management network element, so that the session management network element generates a forwarding rule.
  • the policy control network element adjusts the Ethernet frame structure information initially available in the Ethernet session according to the policy information, and obtains the Ethernet frame structure information available in the Ethernet session, where the policy information includes local configuration or application permission.
  • the Ethernet frame structure information that is, the policy control network element deletes the Ethernet frame structure information that does not match the policy information in the Ethernet frame structure information that is initially available in the Ethernet session according to the policy information, so that the Ethernet frame structure information available in the Ethernet session conforms to the local configuration or Application requirements.
  • the policy control network element receives the configuration file index from the session management network element, and determines the policy information according to the configuration file index, that is, searches for the policy information corresponding to the configuration file index.
  • the policy control network element determines the policy information to adjust the Ethernet frame structure information initially available for the Ethernet session according to the policy information.
  • an available MAC address list and a configuration file index are received from a session management network element, and an event trigger is generated according to the available MAC address list and the configuration file index, and the event trigger includes The MAC address in the available MAC address list of the terminal or the Ethernet frame structure information available to the terminal, and sends an event trigger to the session management network element.
  • the policy control network element receives an available MAC address list and a configuration file index from the session management network element; and generates a terminal routing policy according to the available MAC address list and the configuration file index.
  • the terminal routing policy is used to trigger the terminal to modify the Ethernet session.
  • the policy control network element may send the terminal routing policy to the terminal by using the access management network element.
  • a sixth aspect of the embodiments of the present application provides a policy control network element, where the policy control network element has a function of implementing the method provided by the fifth aspect.
  • the functions can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the policy control network element includes: a processing unit and a transceiver unit; a transceiver unit, configured to receive Ethernet frame structure information initially available from an Ethernet session of the session management network element; and a processing unit configured to adjust The Ethernet frame structure information initially available in the Ethernet session is used to obtain the Ethernet frame structure information available for the Ethernet session.
  • the Ethernet frame structure information available for the Ethernet session includes the Ethernet frame structure information that is initially available for the adjusted Ethernet session; the transceiver unit is also used for the session.
  • the management NE sends the Ethernet frame structure information available for the Ethernet session.
  • the policy control network element includes: a processor, a transceiver, and a memory, wherein the transceiver is configured to receive and transmit information, the memory stores computer execution instructions, and the processor passes the bus and the memory and the transceiver Connecting, the processor executes a computer execution instruction stored in the memory, so that the policy control network element performs the following operations: receiving Ethernet frame structure information initially available from the Ethernet session of the session management network element; adjusting an Ethernet frame structure initially available for the Ethernet session Information, the Ethernet frame structure information available for the Ethernet session is obtained, the Ethernet frame structure information available for the Ethernet session includes the Ethernet frame structure information initially available for the adjusted Ethernet session, and the Ethernet frame structure information available for the Ethernet session is sent to the session management network element.
  • the policy control network element refers to the implementation of the method, and the method of controlling the network element can be implemented by the method and the beneficial effects of the method for controlling the network element to solve the problem. It will not be repeated here.
  • a seventh aspect of the present application provides a computer readable storage medium having instructions stored therein that, when run on a computer, cause the computer to perform the method described in the fifth aspect above.
  • An eighth aspect of the embodiments of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above fifth aspect.
  • a ninth aspect of the embodiments of the present application provides a communication method, including:
  • the user plane function network element receives the filtering rule from the session management network element, and the filtering rule includes the Ethernet frame structure information available for the Ethernet session;
  • the user plane function network element forwards the data packet when the Ethernet frame structure information of the data packet matches the Ethernet frame structure information available for the Ethernet session;
  • the user plane function network element discards the data packet if the Ethernet frame structure of the data packet does not match the Ethernet frame structure information available for the Ethernet session.
  • the user plane function network element can perform filtering on the data packet in combination with the filtering rule and the Ethernet frame structure information of the data packet.
  • the user plane function network element further receives a forwarding rule from the session management network element, where the forwarding rule includes an path forwarding information available for the Ethernet session and an adjusted Ethernet session available for the Ethernet session.
  • the forwarding rule includes an path forwarding information available for the Ethernet session and an adjusted Ethernet session available for the Ethernet session.
  • Frame structure information or, including path forwarding information available for Ethernet session and Ethernet filter available for adjusted Ethernet session; or path forwarding information including Ethernet session available, Ethernet filter available for Ethernet session, and adjusted Ethernet session Available Ethernet frame structure information.
  • the user plane function network element can forward the data packet according to the forwarding rule.
  • the user plane function network element is configured to target the data packet according to the forwarding rule when the Ethernet frame structure information of the data packet matches the Ethernet frame structure information available for the Ethernet session. Forward.
  • the event trigger when the user plane function network element receives the event trigger, the event trigger includes the media access control address of the terminal or the Ethernet frame structure information available to the terminal, Sending an event report to the session management network element, the event report includes Ethernet frame structure information available to the terminal, so that the session management network element determines the Ethernet frame structure information available to the terminal as the Ethernet frame structure information available for the Ethernet session.
  • a tenth aspect of the embodiments of the present application provides a user plane function network element, where the user plane function network element has a function of implementing the method provided by the ninth aspect.
  • the functions can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the user plane function network element includes: a processing unit and a transceiver unit; and a transceiver unit, configured to receive a filtering rule from the session management network element, where the filtering rule includes Ethernet frame structure information available for the Ethernet session; a processing unit, configured to perform forwarding processing on the data packet if the Ethernet frame structure information of the data packet matches the Ethernet frame structure information available for the Ethernet session;
  • the processing unit is configured to discard the data packet if the Ethernet frame structure of the data packet does not match the Ethernet frame structure information available for the Ethernet session.
  • the user plane function network element includes: a processor, a transceiver, and a memory, wherein the transceiver is configured to receive and send information, the memory stores computer execution instructions, and the processor transmits and receives through the bus and the memory.
  • the processor is configured to execute a computer execution instruction stored in the memory to cause the user plane function network element to perform the following operations: receiving a filtering rule from the session management network element, the filtering rule including Ethernet frame structure information available for the Ethernet session; If the Ethernet frame structure information of the packet matches the Ethernet frame structure information available for the Ethernet session, the data packet is forwarded; or, if the Ethernet frame structure of the data packet does not match the Ethernet frame structure information available for the Ethernet session. , discard the packet.
  • the method and the beneficial effects of the problem that the user plane function network element solves the problem can be referred to the method and the beneficial effects of the ninth aspect. Therefore, the implementation of the policy control network element can refer to the implementation of the method. The repetitions are not repeated here.
  • An eleventh aspect of the present application provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the above ninth aspect.
  • a twelfth aspect of the embodiments of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above ninth aspect.
  • a thirteenth aspect of the embodiments of the present application provides a communication method, including:
  • the terminal receives the terminal routing policy from the policy control network element;
  • the terminal detects whether the Ethernet frame structure information of the data packet satisfies the terminal routing policy
  • the terminal When the terminal detects that the Ethernet frame structure information of the data packet satisfies the terminal routing policy, the terminal triggers the Ethernet session modification.
  • the terminal routing policy includes a non-IP descriptor, and the non-IP descriptor is used to indicate the Ethernet frame structure information available to the terminal.
  • the terminal When the terminal is to send the uplink data packet, it is detected whether the Ethernet frame structure information of the uplink data packet matches the Ethernet frame structure information indicated by the non-IP descriptor, and in the case of matching, determining that the Ethernet frame structure information of the uplink data packet satisfies Terminal routing policy.
  • the terminal triggers the Ethernet session modification, that is, the terminal sends an Ethernet filter to the session management network element, where the Ethernet filter encapsulates the Ethernet frame structure information available to the terminal.
  • the terminal may send an Ethernet filter to the session management network element by using the access management network element.
  • the terminal triggers the Ethernet session modification according to the terminal routing policy, and carries the Ethernet filter in the Ethernet session modification request, so that the session management network element acquires the Ethernet frame structure information available to the terminal.
  • a fourteenth aspect of the embodiments of the present application provides a terminal having a function of implementing the method provided by the thirteenth aspect.
  • the functions can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the terminal includes: a processing unit and a transceiver unit; a transceiver unit configured to receive a terminal routing policy from the policy control network element; and a processing unit configured to detect whether the Ethernet frame structure information of the data packet is And satisfying the terminal routing policy; the transceiver unit is further configured to trigger an Ethernet session modification if the processing unit detects that the Ethernet frame structure information of the data packet satisfies the terminal routing policy.
  • the terminal includes: a processor, a transceiver, and a memory, wherein the transceiver is configured to receive and send information, the memory stores computer execution instructions, and the processor is connected to the memory and the transceiver through a bus, and is processed. Executing a computer execution instruction stored in the memory, so that the user plane function network element performs the following operations: receiving a terminal routing policy from the policy control network element; detecting whether the Ethernet frame structure information of the data packet satisfies the terminal routing policy; In the case where it is detected that the Ethernet frame structure information of the data packet satisfies the terminal routing policy, the Ethernet session modification is triggered.
  • the method and the beneficial effects of the thirteenth aspect can be seen from the principle and the beneficial effects of the terminal. Therefore, the implementation of the terminal can refer to the implementation of the method, and the details are not repeated. .
  • a fifteenth aspect of the embodiments of the present application provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the thirteenth aspect.
  • a sixteenth aspect of the embodiments of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the thirteenth aspect.
  • a seventeenth aspect of the embodiments of the present application provides a communication system, including:
  • the session management network element obtains the Ethernet frame structure information that is available for the Ethernet session, and generates a filtering rule according to the Ethernet frame structure information that is available in the Ethernet session, where the filtering rule includes the Ethernet frame structure information that is available to the Ethernet session, and sends the information to the user plane function network element.
  • the filtering rule includes the Ethernet frame structure information that is available to the Ethernet session, and sends the information to the user plane function network element.
  • the user plane function network element receives the filtering rule.
  • the session management network element sends the generated filter rule that carries the Ethernet frame structure information of the Ethernet session to the user plane function network element, so that the user plane function network element performs targeted filtering processing according to the filtering rule.
  • the user plane function network element forwards the data packet when the Ethernet frame structure information of the data packet matches the Ethernet frame structure information available for the Ethernet session; or The user plane function network element discards the data packet when the Ethernet frame structure of the data packet does not match the Ethernet frame structure information available for the Ethernet session, so that the user plane function network element is targeted according to the Ethernet frame structure information of the data packet.
  • Ground filtration treatment the Ethernet frame structure information of the data packet matches the Ethernet frame structure information available for the Ethernet session.
  • the session management network element generates a forwarding rule, and sends a forwarding rule to the user plane function network element, and the user plane function network element receives the forwarding rule, and performs forwarding processing according to the forwarding rule.
  • the forwarding rule includes the path forwarding information available in the Ethernet session and the Ethernet frame structure information available in the adjusted Ethernet session; or the path forwarding information included in the Ethernet session and the Ethernet filter available in the adjusted Ethernet session; or The path forwarding information available for the Ethernet session, the Ethernet filter available for the Ethernet session, and the Ethernet frame structure information available for the adjusted Ethernet session.
  • the session management network element sends the Ethernet frame structure information initially available to the Ethernet session to the policy control network element, and the policy control network element receives the Ethernet frame structure initially available in the Ethernet session.
  • the Ethernet frame structure information initially available in the Ethernet session is adjusted, and the Ethernet frame structure information available for the Ethernet session is obtained, and the policy control network element dynamically adjusts the Ethernet frame structure information.
  • the eighteenth aspect of the present application provides a communication system, including a session management network element and a user plane function network element.
  • the session management network element is configured to obtain the Ethernet frame structure information that is available for the Ethernet session, and generate the filtering rule according to the Ethernet frame structure information that is available in the Ethernet session, where the filtering rule includes the Ethernet frame structure information that is available for the Ethernet session, and sends the filtering to the user plane function network element. rule;
  • User plane function network element used to receive filtering rules.
  • the session management network element sends the generated filtering rule that carries the Ethernet frame structure information of the Ethernet session to the user plane function network element, so that the user plane function network element performs targeted filtering processing according to the filtering rule.
  • the session management network element in the system provided by the fourteenth aspect of the present application is used to perform the method provided by the first aspect, and the user plane function network element is used to perform the method provided by the ninth aspect.
  • system further includes a policy control network element, where the policy control network element is configured to perform the method provided by the fifth aspect.
  • the system further includes a terminal, where the terminal is configured to perform the method provided in the thirteenth aspect.
  • FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applied;
  • FIG. 2 is a schematic diagram of a network architecture of a fifth generation mobile communication system
  • FIG. 3 is a schematic flowchart of a communication method according to Embodiment 1 of the present application.
  • FIG. 4 is a schematic flowchart of a communication method according to Embodiment 2 of the present application.
  • FIG. 5 is a schematic flowchart diagram of a communication method according to Embodiment 3 of the present application.
  • FIG. 6 is a schematic flowchart of a communication method according to Embodiment 4 of the present application.
  • FIG. 7 is a schematic diagram of a logical structure of a communication device according to an embodiment of the present application.
  • FIG. 8 is a simplified schematic diagram of a physical structure of a communication device according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a network architecture of an embodiment of the present application.
  • the network architecture includes a session management network element 101 and a user plane function network element 102, and may further include a policy control network element 103, a data management network element 104, and an authentication authority.
  • the session management network element 101 belongs to the core network control plane network element, and is responsible for session management of the terminal, and can manage three types of sessions: an IP session, an Ethernet session, and an unstructured session.
  • the session management network element 101 may be an SMF in a 5G system, or may be a network element responsible for session management in a future communication system.
  • the session management network element 101 can obtain the Ethernet frame structure information available for the Ethernet session, generate a filtering rule, and communicate with the user plane function network element 102, for example, the session management network element 101 to the user plane function network element. 102 sends a filter rule.
  • the session management network element 101 can obtain the Ethernet frame structure information available for the Ethernet session in the following manners: A, obtain the Ethernet frame structure information available for the Ethernet session by receiving the Ethernet session establishment request from the access network management network element 106, the Ethernet The session establishment request may carry the Ethernet frame structure information supported by the terminal; B. Obtain the Ethernet frame structure information available for the Ethernet session by receiving the subscription information of the terminal from the data management network element 104, where the subscription information includes the Ethernet frame structure information signed by the terminal; C. Acquire Ethernet frame structure information available for the Ethernet session by receiving an authentication authorization response from the authentication authorization network element 105, where the authentication authorization response includes Ethernet frame structure information supported by the data network.
  • the session management network element 101 can also generate a forwarding rule, and send a forwarding rule to the user plane function network element 102.
  • the user plane function network element 102 belongs to the core network user plane function network element, and is responsible for performing data packet forwarding according to the routing rule of the session management network element.
  • the user plane function network element 102 may be a UPF in a 5G system, or may be a network element responsible for data packet forwarding in a future communication system.
  • the user plane function network element 102 can communicate with the session management network element 101.
  • the user plane function network element 102 can receive the filtering rule from the session management network element 101.
  • the user plane function network element 102 can also filter the data packet according to the filtering rule, and can also receive the forwarding rule from the session management network element 101, and forward the data packet according to the forwarding rule.
  • the policy control network element 103 belongs to the core network control plane network element and is responsible for user policy management, such as a charging policy.
  • the policy control network element 103 may be a PCF in a 5G system, or may be a network element responsible for policy management in a future communication system.
  • the policy control network element 103 can communicate with the session management network element 101.
  • the policy control network element 103 can receive the Ethernet frame structure information from the session management network element 101.
  • the policy control network element 103 can also send the adjusted Ethernet frame structure information to the session management network element 101.
  • the policy control network element 103 also communicates with the access management network element 106, for example, by the access management network element 106 to send messages to the terminal, and the like.
  • the data management network element 104 belongs to the core network control plane network element and is responsible for managing user subscription information.
  • the data management network element 104 may be a UDM in a 5G system, or may be a network element responsible for managing user subscription information in a future communication system.
  • the data management network element 104 can communicate with the session management network element 101.
  • the data management network element 104 can provide the session management network element 101 with the Ethernet frame structure information subscribed by the terminal.
  • the authentication and authorization network element 105 is responsible for performing security authentication, authorization, and the like on the user, for example, authenticating, authorizing, and the like of the user of the social application on the terminal.
  • the authentication and authorization network element 105 may be a DN-AAA, that is, the authentication and authorization network element 105 is a network element in the data network in the 5G system, and may also be a network element responsible for authenticating the user in the data network in the future communication system.
  • the authentication and authorization network element 105 can communicate with the session management network element 101.
  • the authentication and authorization network element 105 provides the session management network element 101 with Ethernet frame structure information supported by the data network, an available media access control (MAC) address list, a configuration file index, and the like.
  • MAC media access control
  • the access management network element 106 belongs to the core network control plane network element and is responsible for terminal access management and mobility management.
  • the access management network element 106 may be an access and mobility management function (AMF) in a 5G system, or may be a network element responsible for access and mobility management in a future communication system.
  • AMF access and mobility management function
  • the access management network element 106 can communicate with the session management network element 101, the policy control network element 103, and the terminal.
  • the access management network element 106 can receive an Ethernet session establishment request from the terminal and send the Ethernet session establishment request to the session management network element 101; can receive an Ethernet session modification request from the terminal, and send the response to the session management network element 101.
  • the Ethernet session modification request may receive a request for transmitting a non-access stratum (NAS) message from the policy control network element 103, and send a non-access stratum transmission message to the terminal.
  • NAS non-access stratum
  • the access management network element 106 is equivalent to a relay station between the terminal and the session management network element 101, and is equivalent to a relay station between the terminal and the policy control network element 103. It should be noted that an access network exists between the access management network element 106 and the terminal, and the access network implements the terminal to access the network.
  • the terminal may be a UE, a mobile station (MS), a mobile terminal (MT), etc., and is a device that provides voice and/or data connectivity to the user, for example, has a wireless connection.
  • Functional handheld devices in-vehicle devices, etc.
  • some examples of terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality. (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and the like.
  • the network architecture diagram includes an authentication server function (AUSF), a unified data management (UDM), an access and mobility management (AMF), and a session management function.
  • AUSF authentication server function
  • UDM unified data management
  • AMF access and mobility management
  • SMF Policy Control Function
  • PCF Policy Control Function
  • AF application function
  • terminal access network
  • AN access network
  • UPF user plane function
  • DN data network
  • the access network may be a radio access network (RAN).
  • RAN radio access network
  • the interface between the terminal and the AMF is an N1 interface
  • the interface between the (R) AN and the AMF is an N2 interface
  • the interface between the (R) AN and the UPF is an N3 interface
  • the interface between the UPF and the SMF is an N4 interface.
  • the interface between the PCF and the AF is the N5 interface.
  • the interface between the UPF and the DN is the N6 interface.
  • the interface between the SMF and the PCF is the N7 interface.
  • the interface between the AMF and the UDM is the N8 interface.
  • the UPF and the UPF are used.
  • the interface between the UMF and the SMF is the N11 interface
  • the interface between the AMF and the AMF is the N12 interface
  • the interface between the AUX and the UDM is the N13 interface
  • the interface between the AMF and the AMF is an N14 interface
  • the interface between the AMF and the PCF is an N15 interface.
  • the terminal is an entry point for the mobile user to interact with the network, and can provide basic computing power, storage capability, display a business window to the user, and accept user operation input.
  • the terminal establishes a signal connection with the (R)AN, and the data is connected, thereby transmitting control signals and service data to the mobile network.
  • (R)AN is similar to the base station in the traditional network, and is deployed close to the terminal device to provide the network access function for authorized users in a specific area, and can transmit user data by using different quality transmission tunnels according to the user level and service requirements. . (R) AN can manage its own resources, make reasonable use, provide access services for terminals as needed, and forward control signals and user data between the terminal and the core network.
  • the core network is responsible for maintaining the subscription data of the mobile network, managing the network elements of the mobile network, and providing functions such as session management, mobility management, policy management, and security authentication for the terminal.
  • the terminal When the terminal is attached, the terminal is provided with network access authentication; when the terminal has a service request, the terminal allocates network resources; when the terminal moves, the terminal updates the network resource; when the terminal is idle, provides the terminal with a fast recovery mechanism;
  • the terminal is detached, the network resource is released for the terminal; when the terminal has service data, the terminal provides data routing functions, such as forwarding the uplink data to the data network; or receiving the downlink data from the data network, and forwarding the data to the (R)AN. It is sent to the terminal.
  • the core network includes UPF, AUSF, AMF, SMF, UDM, PCF, and AF.
  • the core network user plane includes UPF
  • the core network control plane includes AUSF, AMF, SMF, UDM, PCF, and AF.
  • the UPF performs user packet forwarding according to the routing rules of the SMF.
  • AUSF is responsible for the terminal's security certification.
  • AMF responsible for terminal access management and mobility management.
  • SMF responsible for session management of the terminal.
  • UDM responsible for user contract information management.
  • PCF responsible for user policy management.
  • AF responsible for user application management.
  • a data network is a data network that provides business services to users.
  • the general client is located at the terminal and the server is located at the data network.
  • the data network can be a private network, such as a local area network, or an external network that is not controlled by the operator, such as the Internet (Internet), or a proprietary network deployed by the operator, such as to configure the IP multimedia network subsystem (IP). Multimedia core network subsystem, IMS) service.
  • IP IP multimedia network subsystem
  • IMS IP multimedia core network subsystem
  • each network element in the network architecture shown in FIG. 1 may be used as an example of the corresponding network element in the network architecture shown in FIG. 2, that is, the session management network element 101 takes SMF as an example, and the user plane function network element is used.
  • the session management network element 101 takes SMF as an example
  • the user plane function network element is used.
  • the policy control network element 103 takes the PCF as an example
  • the data management network element 104 takes the UDM as an example
  • the authentication and authorization network element 105 takes the DN-AAA as an example
  • the access management network element 106 takes the AMF as an example.
  • the present invention provides a communication method, device, and system, which solves the disadvantages of the prior art.
  • the present invention provides only a communication method, a device, and a system.
  • the problem of filtering the Ethernet packets of the non-legal MAC address can be specifically filtered according to the Ethernet frame structure of the data packet.
  • the communication method provided in the embodiment of the present application is described in detail below, and the network architecture in the 5G system is taken as an example for introduction.
  • FIG. 3 is a schematic flowchart of a communication method according to Embodiment 1 of the present application. The method may include, but is not limited to, the following steps:
  • Step S301 the SMF acquires the Ethernet frame structure information available for the Ethernet session.
  • the Ethernet frame structure information used by the Ethernet session is used to describe the Ethernet frame structure information that is available for the Ethernet session that the terminal requests to establish, that is, which type of Ethernet frame structure can be used for describing the Ethernet session that the terminal requests to establish.
  • the name of the Ethernet frame structure information that is available for the Ethernet session does not constitute a limitation on the embodiment of the present application, and may also be used to describe the terminal request establishment by using the Ethernet frame structure information supported by the session or the Ethernet frame structure information associated with the Ethernet session. Ethernet frame structure information available for Ethernet session.
  • Ethernet frame structure information may include at least one of an Ethernet protocol type and a virtual local area network (VLAN) tag.
  • VLAN virtual local area network
  • the Ethernet protocol type is used to identify which type of Ethernet protocol or Ethernet protocol is encapsulated.
  • the Ethernet protocol can be an Ethernet protocol type defined by 802.3 or an Ethernet protocol type defined by 802.1q. If the Ethernet protocol type is 802.1q, the Ethernet frame structure information needs to include a VLAN tag. If the Ethernet protocol type is 802.1, the Ethernet frame structure information does not include the VLAN tag.
  • the protocol encapsulated by the Ethernet protocol may be IP (IPv4, IPv6) protocol, address resolution protocol (ARP), reverse address resolution protocol (RARP), multi-protocol label switching (multi-protocol label switching). , MPLS) protocols, etc.
  • the VLAN tag may include a VLAN identifier (VLAN ID, VID), and the VID is used to identify which VLAN.
  • VLAN tag may further include at least one of a priority code point (PCP) and a drop eligible indicator (DEI).
  • PCP priority code point
  • DEI drop eligible indicator
  • the SMF can obtain the Ethernet frame structure information available for the Ethernet session in the following four ways:
  • step S301a the SMF receives the Ethernet session establishment request, and acquires the Ethernet frame structure information available for the Ethernet session through the Ethernet session establishment request.
  • the SMF may receive an Ethernet session establishment request from the terminal through the AMF, the Ethernet session establishment including first Ethernet frame structure information available for the Ethernet session.
  • the first Ethernet frame structure information that is available in the Ethernet session may be the Ethernet frame structure information supported by the terminal, and the Ethernet frame structure information supported by the terminal may be read from the UE MAC capability carried by the Ethernet session establishment request.
  • the SMF determines the first Ethernet frame structure information available for the Ethernet session as the Ethernet frame structure information available for the Ethernet session.
  • step S301b the SMF receives the subscription information from the UDM, and obtains the Ethernet frame structure information available for the Ethernet session through the subscription information.
  • the SMF sends a subscription information acquisition request to the UDM.
  • the UDM when receiving the subscription information acquisition request, feeds back the subscription information to the SMF, where the subscription information is the subscription information of the terminal, including the second Ethernet frame structure information available for the Ethernet session.
  • the second Ethernet frame structure information that is available in the Ethernet session may be the Ethernet frame structure information that is signed by the terminal.
  • the SMF determines the second Ethernet frame structure information available for the Ethernet session as the Ethernet frame structure information available for the Ethernet session.
  • step S301c the SMF receives the authentication authorization response from the DN-AAA, and obtains the Ethernet frame structure information available for the Ethernet session through the authentication authorization response.
  • the SMF sends an authentication authorization request to the DN-AAA.
  • the DN-AAA feeds back an authentication authorization response to the SMF, where the authentication authorization response includes third Ethernet frame structure information available for the Ethernet session.
  • the third Ethernet frame structure information that is available in the Ethernet session may be the Ethernet frame structure information supported by the data network, and the Ethernet frame structure information supported by the data network may be represented by the supported Ethernet protocol information.
  • the SMF determines the third Ethernet frame structure information available for the Ethernet session as the Ethernet frame structure information available for the Ethernet session.
  • step S301d the SMF receives the event report from the UPF, and obtains the Ethernet frame structure information available for the Ethernet session through the event report.
  • the event report includes fourth Ethernet frame structure information available for the Ethernet session, and the fourth Ethernet frame structure information available for the Ethernet session may be Ethernet frame structure information available to the terminal, and the SMF determines that the Ethernet frame structure information available to the terminal is available for the Ethernet session. Ethernet frame structure information. This method four will be described in detail through the embodiment shown in FIG.
  • Step S302 The SMF generates a filtering rule according to the Ethernet frame structure information available in the Ethernet session, where the filtering rule includes the Ethernet frame structure information available for the Ethernet session.
  • the SMF generates a filtering rule according to the Ethernet frame structure information available for the Ethernet session, and the Ethernet frame structure information that is available for the Ethernet session is carried in the filtering rule.
  • Step S303 the SMF sends a filtering rule to the UPF. Accordingly, the UPF receives the filtering rules from the SMF.
  • the filtering rule can be sent to the UPF through the N4 message, so that the UPF filters the data packet according to the filtering rule.
  • the UPF may feed back an N4 message to the SMF, where the N4 message is used to instruct the UPF to receive the filtering rule.
  • the SMF may send an Ethernet session establishment response to the terminal by using the AMF, and the Ethernet session establishment response is used to inform the terminal that the Ethernet session establishment is completed, and the terminal may send uplink data or receive downlink data.
  • Step S304 the UPF performs filtering processing on the data packet according to the Ethernet frame structure information available in the Ethernet session.
  • the UPF matches the Ethernet frame structure information of the data packet with the Ethernet frame structure information available for the Ethernet session included in the filtering rule, that is, determines the Ethernet frame structure information and the filtering rule of the data packet. Whether the Ethernet frame structure information available for the included Ethernet session is the same, or whether the Ethernet frame structure information of the data packet is included in the Ethernet frame structure information available for the Ethernet session included in the filtering rule.
  • the UPF forwards the data packet. In the case where the Ethernet frame structure information of the data packet does not match the Ethernet frame structure information available for the Ethernet session, the UPF discards the data packet.
  • the data packet may be an uplink data packet or a downlink data packet. It can be understood that the filtering of the uplink data packet and the downlink data packet can be implemented in a targeted manner according to the Ethernet frame structure information of the data packet by using the filtering rule of the Ethernet frame structure information that is available in the Ethernet session.
  • a filtering rule is generated by the SMF, and the filtering rule includes the Ethernet frame structure information available for the Ethernet session, and the filtering rule is sent to the UPF, so that the UPF can target the data packet according to the filtering rule.
  • Ground filtration is generated by the SMF, and the filtering rule includes the Ethernet frame structure information available for the Ethernet session, and the filtering rule is sent to the UPF, so that the UPF can target the data packet according to the filtering rule.
  • step S302 the method further includes:
  • Step S302' the SMF generates a forwarding rule according to the Ethernet frame structure information available for the Ethernet session.
  • the forwarding rule is used by the UPF to determine the forwarding path of the data packet.
  • the forwarding rule may include Ethernet frame structure information available for Ethernet session and path forwarding information available for Ethernet session, or path forwarding information including Ethernet filter and Ethernet session available for Ethernet session, or Ethernet frame structure information including Ethernet session available, The Ethernet filter available for the Ethernet session and the path available to the Ethernet session forward the information.
  • the SMF may generate a forwarding rule according to the Ethernet frame structure information available for the Ethernet session, that is, the Ethernet frame structure information available for the Ethernet session is carried in the forwarding rule.
  • the forwarding rule also includes path forwarding information available for the Ethernet session.
  • the SMF may generate forwarding rules based on the Ethernet frame structure information available for the Ethernet session and the Ethernet filter available for the Ether session.
  • the forwarding rules may include Ethernet frame structure information available for Ethernet session and path forwarding information available for Ethernet session, or path forwarding information including Ethernet filter available for Ethernet session and Ether session available, or Ethernet including Ethernet session available
  • the frame structure information, the Ethernet filter available for the Ethernet session, and the path available for the Ethernet session forward the information.
  • Ethernet filter that is available for the Ethernet session is used to describe the Ethernet filter that can be used by the Ethernet session that the terminal requests to establish.
  • Ethernet filters can also be called Ethernet Packet Filters.
  • the Ethernet filter available in the Ethernet session may be obtained by the SMF from the PCF, or may be acquired by the SMF from the terminal, or may be acquired by the SMF by other means.
  • the Ethernet filter may include: a source MAC address/destination MAC address, an Ethernet protocol type defined by 802.3, a client VLAN tag defined by 802.1q, a VID in a server VLAN tag, and a client VLAN tag/service defined by 802.1q. PCP/DEI and packet filtering direction in the end VLAN tag.
  • At least one of the Ethernet frame structure information available for the Ethernet session in the forwarding rule and the Ethernet filter available for the Ethernet session is used by the UPF to select the path forwarding information available for the Ethernet session for the UPF to determine to whom to send the data packet.
  • the Ethernet frame structure information available for an Ethernet session may correspond to an Ether session available path forwarding information, or an Ethernet session available Ethernet filter may forward information corresponding to an Ether session available path.
  • the forwarding rule includes a correspondence between the Ethernet frame structure information available for the Ethernet session and the path forwarding information available for the Ethernet session, or a correspondence between the Ethernet filter available for the Ethernet session and the path forwarding information available for the Ethernet session.
  • the path forwarding information that is available in the Ethernet session includes at least one of forwarding path information between the UPF and another UPF, forwarding path information between the UPF and the (R)AN, and forwarding path information between the UPF and the data network.
  • the forwarding path information between the UPF and another UPF may include N9 tunnel information.
  • the forwarding path information between the UPF and the (R) AN may include at least one of a tunnel ID (tunnel ID), an IP address of the (R) AN, and a tunnel endpoint identifier (TEID).
  • the forwarding path information between the UPF and the data network includes a data network access identifier (DNAI), a data network name (DNN), a network address translation (NAT) identifier/address, and At least one of N6 tunnel information.
  • DNAI data network access identifier
  • DNN data network name
  • NAT network address translation
  • step S302' may be performed simultaneously with step S302, or step S302 may be performed first, and then step S302' may be performed.
  • step S303' the SMF sends a forwarding rule to the UPF. Accordingly, the UPF receives forwarding rules from the SMF.
  • step S303' may be performed simultaneously with step S303, that is, the SMF may simultaneously send the filtering rule and the forwarding rule to the UPF through the N4 message.
  • Step S304' the UPF performs forwarding processing on the data packet according to the forwarding rule.
  • the UPF When receiving the forwarding rule, the UPF forwards the data packet according to the forwarding rule, that is, the UPF determines a forwarding path that matches the Ethernet frame structure information of the data packet according to the forwarding rule, and forwards the data packet to the forwarding path. In order to achieve targeted packet forwarding.
  • the UPF may perform forwarding processing on the data packet that satisfies the filtering rule according to the forwarding rule, that is, the step S304' is performed after the step S304, and the targeted forwarding according to the Ethernet frame structure may be implemented.
  • targeted packet forwarding can be implemented on the basis of targeted filtering.
  • FIG. 4 is a schematic flowchart diagram of a communication method according to Embodiment 2 of the present application. The method may include, but is not limited to, the following steps:
  • Step S401 the SMF acquires the Ethernet frame structure information that is initially available in the Ethernet session.
  • the SMF can obtain the Ethernet frame structure information that is initially available in the Ethernet session in the foregoing four manners, that is, the Ethernet frame structure information that is initially available in the Ethernet session may include the first Ethernet frame structure information that is available in the Ethernet session in the foregoing mode 1, and the foregoing manner 2 At least one of the second Ethernet frame structure information available in the Ethernet session, the third Ethernet frame structure information available in the Ethernet session in the foregoing mode 3, and the Ethernet frame structure information available in the terminal in the foregoing mode four.
  • the Ethernet frame structure information initially used by the Ethernet session is used to describe the Ethernet frame structure information originally acquired by the SMF, that is, the Ethernet frame structure information that is not dynamically adjusted by the PCF.
  • the SMF may also obtain the Ethernet frame structure information initially available for the Ethernet session by receiving the Ethernet filter from the terminal, and the Ethernet filter encapsulates the terminal available. Ethernet frame structure information.
  • the SMF can also obtain the Ethernet frame structure information initially available in the Ethernet session by other means.
  • the Ethernet frame structure information dynamically adjusted by the PCF is described using the Ethernet frame structure information available for the Ethernet session.
  • Ethernet frame structure information acquired by the above four manners is referred to as the Ethernet frame structure information available for the Ethernet session, and in the embodiment shown in FIG.
  • the Ethernet frame information obtained by the above four methods is called Ethernet frame structure information that is initially available in the Ethernet session, but the names are different.
  • Step S402 the SMF sends the Ethernet frame structure information initially available to the Ethernet session to the PCF. Accordingly, the PCF receives the Ethernet frame structure information initially available for the Ethernet session from the SMF.
  • the SMF may send the Ethernet frame structure information initially available to the Ethernet session to the PCF through the Npcf_SMPolicyControl_Get, that is, the Ethernet frame structure information initially available for the Ethernet session may be carried in the Npcf_SMPolicyControl_Get.
  • Npcf_SMPolicyControl_Get may also include a profile index, which may be used by the PCF to determine policy information.
  • the policy information in the embodiment of the present application is an adjustment policy of the Ethernet frame structure information, and is used by the PCF to adjust the Ethernet frame structure information that is initially available in the Ethernet session.
  • the policy information may include locally configured Ethernet frame structure information or include Ethernet frame structure information allowed by the application.
  • the Ethernet frame structure information that is configured locally may be the Ethernet frame structure information supported by the 5G system, or the Ethernet frame structure information selected by the 5G system, or the Ethernet frame structure information configured by the data network on the PCF. It can be understood that the Ethernet frame structure information configured on the PCF of the data network is the Ethernet frame structure information that the terminal can use when communicating between the terminal and the data network.
  • the allowed Ethernet frame structure information may be the Ethernet frame structure information that the AF configures on the PCF to allow the terminal to use.
  • Step S403 the PCF adjusts the Ethernet frame structure information initially available in the Ethernet session to obtain the Ethernet frame structure information available for the Ethernet session.
  • the Ethernet frame structure information available for the Ethernet session includes the Ethernet frame structure information initially available for the adjusted Ethernet session.
  • the PCF may adjust the Ethernet frame structure information initially available for the Ethernet session according to the determined policy information to obtain the Ethernet frame structure information available for the Ethernet session.
  • the Ethernet frame structure information available for the Ethernet session includes the Ethernet frame structure information initially available for the adjusted Ethernet session.
  • the policy information includes the Ethernet frame structure information allowed by the application, and the allowed Ethernet frame structure information includes the type 1, type 2, type 3, VLAN tag 1, VLAN tag 2, and VLAN tag 3, and the Ethernet frame structure information originally available for the Ethernet session.
  • the second Ethernet frame structure information available for the Ethernet session includes type1, type 4, VLAN tag 1, and VLAN tag 4, then the PCF is from the second Ethernet frame structure information available for the Ethernet session.
  • the Ethernet frame structure information except the Ethernet frame structure information allowed by the application is deleted, that is, the type 4 and the VLAN tag 4 are deleted, and the Ethernet frame structure information available for the Ethernet session is obtained, that is, the Ethernet frame structure information available for the Ethernet session includes type1 and VLAN tag 1. It can be understood that the Ethernet frame structure information available for the Ethernet session matches the Ethernet frame structure information included in the policy information.
  • the adjustment in step S403 refers to deleting the policy information from the Ethernet frame structure information initially available from the Ethernet session without including the Ethernet frame structure information.
  • the PCF determines policy information based on the profile index, which is sent by the SMF to the PCF, and the SMF receives the profile index from the DN-AAA. It can be understood that in the process of transmitting the configuration file index, the SMF is equivalent to the transfer station between the DN-AAA and the PCF, and the configuration file index is transmitted instead of the transmission configuration file, which can save resources and load.
  • the PCF and DN-AAA may pre-sign an agreement or contract that includes policies corresponding to each of the plurality of profiles. It can be understood that the PCF and the DN-AAA can know the policies corresponding to each configuration file.
  • the configuration file index is used to identify the configuration file.
  • the PCF can find the policy corresponding to the configuration file index when the configuration file index is obtained. In the embodiment of the present application, the PCF can find the Ethernet frame structure information according to the configuration file index. Adjust the strategy, that is, the policy information.
  • Step S404 the PCF sends the Ethernet frame structure information available to the Ethernet session to the SMF.
  • the PCF After obtaining the Ethernet frame structure information available for the Ethernet session, the PCF sends the Ethernet frame structure information available to the Ethernet session to the SMF.
  • the PCF may send the Ethernet frame structure information available for the Ethernet session to the SMF through a policy and charging control (PCC) rule, that is, the Ethernet frame structure information available for the Ethernet session is carried in the PCC rule.
  • PCC policy and charging control
  • Step S405 the SMF generates a filtering rule according to the Ethernet frame structure information available in the Ethernet session, where the filtering rule includes the Ethernet frame structure information available for the Ethernet session.
  • Step S406 the SMF sends a filtering rule to the UPF. Accordingly, the UPF receives the filtering rules from the SMF.
  • Step S407 the UPF performs filtering processing on the data packet according to the Ethernet frame structure information available in the Ethernet session.
  • step S405 to step S407 refer to the detailed description of step S302 to step S304 in the embodiment shown in FIG. 3, and details are not described herein again.
  • the SMF sends the Ethernet frame structure information that is initially available to the Ether session through the foregoing four modes.
  • the SMF To the PCF, adjusted by the PCF, the SMF generates a filtering rule according to the Ethernet frame structure information initially available in the adjusted Ethernet session, so that the filtering rule fits the 5G system requirement or the application requirement.
  • step S403 the method further includes:
  • Step S403' the PCF generates an Ethernet filter available for the Ethernet session according to the Ethernet frame structure information available for the Ethernet session.
  • the PCF encapsulates the Ethernet frame structure information available in the Ethernet session in the Ethernet filter to obtain an Ethernet filter available for the Ethernet session. Since the Ethernet frame structure information available for the Ethernet session is adjusted according to the policy information, the PCF uses the Ethernet filter available for the Ethernet session generated according to the Ethernet frame structure information available for the Ethernet session to fit the 5G system requirement or the application requirement.
  • step S404' the PCF sends an Ethernet filter available to the Ether session to the SMF.
  • the PCF may send the Ethernet filter available for the Ethernet session to the SMF simultaneously with the Ethernet frame structure information available for the Ethernet session, i.e., step S04 and step S404' may be performed simultaneously.
  • the Ethernet filter available for the Ethernet session can be carried in the PCC rule simultaneously with the Ethernet frame structure information available for the Ethernet session.
  • Step S405' the SMF generates a forwarding rule according to the Ethernet frame structure information available for the Ethernet session.
  • step S405' may be performed simultaneously with step S405, or step S405 may be performed first, and step S405' may be performed.
  • step S406' the SMF sends a forwarding rule to the UPF. Accordingly, the UPF receives forwarding rules from the SMF.
  • step S406' may be performed simultaneously with step S406, that is, the SMF may simultaneously send the filtering rule and the forwarding rule to the UPF through the N4 message.
  • Step S407' the UPF performs forwarding processing on the data packet according to the forwarding rule.
  • step S405'-step S407' For the specific implementation process of step S405'-step S407', refer to the detailed description of step S302'-step S304', and details are not described herein again.
  • targeted packet forwarding can be implemented on the basis of targeted filtering.
  • FIG. 5 is a schematic flowchart diagram of a communication method according to Embodiment 3 of the present application. The method may include, but is not limited to, the following steps:
  • step S501 the SMF sends an authentication authorization request to the DN-AAA. Accordingly, the PCF receives an authentication authorization request from the DN-AAA.
  • Step S502 the PCF sends an authentication authorization response to the DN-AAA, where the authentication authorization response includes a configuration file index and an available MAC address list. Accordingly, the SMF receives an authentication authorization response from the PCF.
  • the list of available MAC addresses is a list of MAC addresses available for the Ethernet session.
  • Step S503 the SMF sends a configuration file index and a list of available MAC addresses to the PCF. Accordingly, the PCF receives a profile index from the SMF and a list of available MAC addresses.
  • the SMF can send a configuration file index and an available MAC address list to the PCF through Npcf_SMPolicyControl_Get, that is, the configuration file index and the available MAC address list are carried in Npcf_SMPolicyControl_Get.
  • Step S504 the PCF generates an event trigger according to the configuration file index and the available MAC address list.
  • the PCF determines the policy information according to the configuration file index, and determines the Ethernet frame structure information corresponding to each MAC address according to the available MAC address list, that is, determines multiple Ethernet frames. Structural information.
  • the PCF determines the Ethernet frame structure information available to the terminal's MAC address based on the policy information and the plurality of Ethernet frame structure information, that is, determines the Ethernet frame structure information available to the terminal.
  • the PCF filters out the Ethernet frame structure information matching the policy information from the plurality of Ethernet frame structure information according to the policy information, and determines the Ethernet frame structure information that is available to the terminal, that is, from the plurality of available Ethernet frame structure information. Deletes the Ethernet frame structure information that does not match the policy information.
  • the PCF After determining the Ethernet frame structure information available to the terminal, the PCF generates an event trigger including the MAC address in the available MAC address list or the Ethernet frame structure information available to the terminal.
  • step S505 the PCF sends an event trigger to the SMF. Accordingly, the SMF receives an event trigger from the PCF.
  • the PCF can send an event trigger to the SMF through the Nsmf_EventExposure_Subscribe, that is, the event trigger is carried in the Nsmf_EventExposure_Subscribe, and the MAC address in the MAC address list or the Ethernet frame structure information available to the terminal is carried in the Nsmf_EventExposure_Subscribe.
  • step S506 the SMF sends an event trigger to the UPF. Accordingly, the UPF receives an event trigger from the SMF.
  • the SMF can send an event trigger to the UPF through the N4 message, that is, the event trigger is carried in the N4 message.
  • the UPF may feed back an N4 message to the SMF when the event trigger is received, and the fed back N4 message is used to instruct the UPF to receive the event trigger.
  • the SMF may send an Ethernet session establishment response to the terminal by using the AMF, and the Ethernet session establishment response is used to inform the terminal that the Ethernet session establishment is completed, and the terminal may send uplink data or receive downlink data.
  • Step S507 the UPF detects whether the Ethernet frame structure information of the data packet satisfies the event trigger.
  • the UPF detects whether the Ethernet frame structure information of the data packet satisfies the event trigger, that is, whether the Ethernet frame structure information of the data packet matches the available Ethernet frame structure information of the terminal included in the event trigger.
  • the UPF can determine whether the MAC address of the data packet matches the MAC address of the terminal included in the event trigger.
  • Step S508 the UPF sends an event report to the SMF if the Ethernet frame structure information of the data packet satisfies the event trigger. Accordingly, the SMF receives an event report from the UPF.
  • the event report includes Ethernet frame structure information available to the terminal.
  • the event report can also include the MAC address of the terminal.
  • the MAC address of the terminal is the MAC address of the terminal that initiates the Ethernet session establishment request.
  • the Ethernet frame structure information available to the terminal is the Ethernet frame structure information available to the terminal that initiates the Ethernet session establishment request.
  • Step S509 the SMF sends the Ethernet frame structure information initially available to the Ethernet session to the PCF. Accordingly, the PCF receives the Ethernet frame structure information initially available from the Ethernet session of the SMF.
  • the Ethernet frame structure information initially available in the Ethernet session is the Ethernet frame structure information available to the terminal obtained from the event report.
  • Step S510 the PCF adjusts the Ethernet frame structure information initially available in the Ethernet session to obtain the Ethernet frame structure information available for the Ethernet session.
  • the Ethernet frame structure information that is available in the Ethernet session includes the Ethernet frame structure information that is initially available in the adjusted Ethernet session, that is, the Ethernet frame structure information that is available to the adjusted terminal.
  • the PCF can adjust the Ethernet frame structure information initially available for the Ethernet session according to the policy information.
  • the PCF may add the VLAN tag corresponding to the Ethernet frame structure information that is initially available in the Ethernet session to the Ethernet frame structure information, and obtain the Ethernet frame available for the Ethernet session.
  • the structure information such that the Ethernet frame structure information available for the Ethernet session includes the Ethernet protocol type and the VLAN tag.
  • the adjustment in step S510 refers to adding a VLAN tag.
  • Step S511 the PCF sends the Ethernet frame structure information available to the Ether session to the SMF. Accordingly, the SMF receives Ethernet frame structure information available from the Ethernet session of the PCF.
  • Step S509 - Step S511 is an optional step, that is, the PCF may dynamically adjust the Ethernet frame structure information initially available in the Ethernet session, or may not adjust the Ethernet frame structure information initially available in the Ethernet session.
  • Step S512 the SMF generates a filtering rule according to the Ethernet frame structure information available in the Ethernet session.
  • the SMF In the case of dynamic adjustment of the PCF, the SMF generates a filtering rule according to the Ethernet frame structure information available in the Ethernet session; in the case that the PCF is not dynamically adjusted, the SMF generates a filtering rule according to the Ethernet frame structure information initially available in the Ethernet session.
  • step S513 the SMF sends a filtering rule to the UPF. Accordingly, the UPF receives the filtering rules from the SMF.
  • Step S514 the UPF performs filtering processing on the data packet according to the Ethernet frame structure information available in the Ethernet session.
  • step S513 and step S514 refer to the detailed description of step S303 and step S304 in the embodiment shown in FIG. 3, and details are not described herein again.
  • the SMF obtains the Ethernet frame structure information available to the terminal from the UPF, generates a filtering rule according to the Ethernet frame structure information available to the terminal, and generates a filtering rule according to the adjusted Ethernet frame structure information of the terminal.
  • the UPF is allowed to discard packets that do not match the Ethernet frame structure information available to the terminal.
  • the related process of generating a forwarding rule by the SMF may also be added, and targeted packet forwarding is implemented on the basis of implementing targeted filtering.
  • FIG. 6 is a schematic flowchart diagram of a communication method according to Embodiment 4 of the present application. The method may include, but is not limited to, the following steps:
  • Step S601 the SMF sends an authentication authorization request to the DN-AAA. Accordingly, the PCF receives an authentication authorization request from the DN-AAA.
  • Step S602 the PCF sends an authentication authorization response to the DN-AAA, where the authentication authorization response includes a configuration file index and an available MAC address list. Accordingly, the SMF receives an authentication authorization response from the DN-AAA.
  • step S603 the SMF sends a configuration file index and a list of available MAC addresses to the PCF. Accordingly, the PCF receives a profile index from the SMF and a list of available MAC addresses.
  • step S601 to step S603 refer to the detailed description of step S501 to step S503 in the embodiment shown in FIG. 5, and details are not described herein again.
  • Step S604 the PCF generates a user equipment route selection policy (URSP) according to the configuration file index and the available MAC address list.
  • URSP user equipment route selection policy
  • the PCF determines the policy information according to the configuration file index, and determines the Ethernet frame structure information corresponding to each MAC address according to the available MAC address list, that is, determines multiple Ethernet frames. Structural information.
  • the PCF determines the Ethernet frame structure information available to the terminal's MAC address based on the policy information and the plurality of Ethernet frame structure information, that is, determines the Ethernet frame structure information available to the terminal.
  • the PCF filters out the Ethernet frame structure information matching the policy information from the plurality of available Ethernet frame structure information according to the policy information, and determines the Ethernet frame structure information available to the terminal, that is, from the plurality of available Ethernet frames.
  • the Ethernet frame structure information that does not match the policy information is deleted in the structure information.
  • the PCF generates a URSP after determining the Ethernet frame structure information available to the terminal.
  • the URSP includes a non-IP descriptor and a routing policy.
  • the non-IP descriptor is used to indicate the Ethernet frame structure information available to the terminal, and may also indicate the MAC address of the terminal.
  • the routing policy is used to trigger the terminal to initiate an Ethernet session modification request. In other words, the URSP is used to trigger the terminal to initiate the Ethernet session modification request, and may also carry the Ethernet frame structure information available to the terminal.
  • step S605 the PCF sends the URSP to the terminal. Accordingly, the terminal receives the URSP from the PCF.
  • the PCF can send the URSP to the terminal through the AMF, that is, the PCF sends a message carrying the URSP to the AMF.
  • the AMF sends a message carrying the URSP to the terminal.
  • the message carrying the URSP sent by the PCF to the AMF may be an N1N2 transmission message, where the N1N2 transmission message is used to request the AMF to send a non-access layer transport (NAS transport) message carrying the URSP to the terminal, and the AMF receives the N1N2 transmission message.
  • NAS transport non-access layer transport
  • the URSP-carrying message sent to the terminal may transmit a message for the non-access stratum.
  • the SMF may send an N4 message to the UPF, where the N4 message does not carry the Ethernet frame structure information originally available for the Ethernet session or the Ethernet frame structure information available for the Ethernet session.
  • the UPF feeds back the N4 message to the SMF, and the SMF sends an Ethernet session establishment response to the terminal through the AMF in the case of receiving the N4 message fed back by the UPF.
  • Step S606 the terminal sends an Ethernet session modification request to the SMF. Accordingly, the SMF receives an Ethernet session modification request from the terminal.
  • the terminal When receiving the URSP, the terminal detects whether the Ethernet frame structure information of the data packet to be sent matches the Ethernet frame structure information available to the terminal carried by the URSP, and sends an Ethernet session modification to the SMF through the AMF in the case of matching. request.
  • the Ethernet session modification request is used to request the SMF to modify the Ethernet session related parameter information, such as requesting to modify the parameters of the QoS flow.
  • the Ethernet session modification request includes an Ethernet filter, which is an Ethernet filter supported by the terminal.
  • the Ethernet filter encapsulates the Ethernet frame structure information available to the terminal.
  • step S607 the SMF sends an Ethernet filter to the PCF. Accordingly, the PCF receives an Ethernet filter from the SMF.
  • Step S608 the PCF obtains the Ethernet frame structure information available for the Ethernet session according to the Ethernet frame structure information that is available to the terminal.
  • the PCF When the PCF receives the Ethernet filter, the PCF decapsulates the Ethernet filter to obtain the Ethernet frame structure information available to the terminal. In the case that the Ethernet frame structure information available to the terminal is obtained, the Ethernet frame structure information available to the terminal is adjusted to obtain the Ethernet frame structure information available for the Ethernet session. The PCF can adjust the Ethernet frame structure information available to the terminal according to the policy information.
  • the Ethernet frame structure information that is available in the Ethernet session includes the Ethernet frame structure information that is available to the adjusted terminal.
  • the PCF may add the VLAN tag corresponding to the Ethernet frame structure information available in the terminal to the Ethernet frame structure information, and obtain the Ethernet frame structure information available for the Ethernet session.
  • the Ethernet frame structure information available for the Ethernet session includes the Ethernet protocol type and VLAN tag.
  • the adjustment in step S608 refers to adding a VLAN tag.
  • Step S609 the PCF sends the Ethernet frame structure information available to the Ethernet session to the SMF. Accordingly, the SMF receives Ethernet frame structure information available from the Ethernet session of the PCF.
  • Steps S607 to S609 are optional steps, that is, the PCF may dynamically adjust the Ethernet frame structure information available to the terminal, or may not adjust the Ethernet frame structure information available to the terminal.
  • Step S610 the SMF generates a filtering rule according to the Ethernet frame structure information available in the Ethernet session.
  • step S611 the SMF sends a filtering rule to the UPF. Accordingly, the UPF receives the filtering rules from the SMF.
  • the SMF may send an Ethernet session modification command to the terminal, so that the terminal modifies the Ethernet session.
  • Step S612 the UPF performs filtering processing on the data packet according to the Ethernet frame structure information available in the Ethernet session.
  • the SMF obtains the Ethernet frame structure information available to the terminal from the Ethernet filter sent by the terminal, and may generate a filtering rule according to the Ethernet frame structure information available to the terminal, or may be configured according to the adjusted Ethernet frame structure of the terminal.
  • the information generation filtering rule enables the UPF to discard packets that do not match the Ethernet frame structure information available to the terminal.
  • the related process of generating a forwarding rule by the SMF may also be added, and targeted packet forwarding is implemented on the basis of implementing targeted filtering.
  • FIG. 7 is a schematic diagram showing the logical structure of a communication device provided by an embodiment of the present application.
  • the communication device 70 may include a transceiver unit 701 and a processing unit 702.
  • the communication device 70 can be a session management network element 101 (e.g., SMF) or a policy control network element 103 (e.g., PCF).
  • the communication device 70 can also be a user plane function network element 102 (e.g., UPF).
  • the communication device 70 may also be a device that integrates the session management network element 101 and the user plane function network element 102, and may also be a device that integrates the session management network element 101, the policy control network element 103, and the user plane function network element 102, and may also be It is a device that integrates the session management network element 101, the policy control network element 103, the user plane function network element 102, and other network elements.
  • the other network elements may be access management network elements.
  • the transceiver unit 701 is configured to perform step S301 and step S303 in the embodiment shown in FIG. 3, and the processing unit 702 is configured to execute the method in FIG. Step S302 in the embodiment is shown.
  • the transceiver unit 701 is further configured to perform step S301' and step S303' in the embodiment shown in FIG. 3, step S401, step S402, step S404, step S404', step S406 and step S406' in the embodiment shown in FIG. Step S501, step S502, step S503, step S505, step S506, step S508, step S509, step S511 and step S513 in the embodiment shown in FIG.
  • the processing unit 702 is further configured to perform step S302' in the embodiment shown in FIG. 3, step S405 and step S405' in the embodiment shown in FIG. 4, and step S512 in the embodiment shown in FIG. Step S610 in the example.
  • the transceiver unit 701 is configured to perform step S303 in the embodiment shown in FIG. 3, step S406 in the embodiment shown in FIG. Step S513 in the embodiment shown in FIG. 5, step S611 in the embodiment shown in FIG. 6; processing unit 702 is configured to perform step S304 in the embodiment shown in FIG. 3, step S407 in the embodiment shown in FIG. Step S514 in the embodiment shown in Fig. 5, step S612 in the embodiment shown in Fig. 6.
  • the transceiver unit 701 is further configured to perform step S303' in the embodiment shown in FIG. 3, step S406' in the embodiment shown in FIG. 4, and step S506 and step S508 in the embodiment shown in FIG.
  • the processing unit 702 is further configured to perform step S406' in the embodiment shown in Fig. 3, step S407' in the embodiment shown in Fig. 4, and step S507 in the embodiment shown in Fig. 5.
  • the transceiver unit 701 is configured to perform step S402 and step S404 in the embodiment shown in FIG. 4, and the processing unit 702 is configured to execute the method in FIG. Step S403 in the embodiment is shown.
  • the transceiver unit 701 is further configured to perform step S404' in the embodiment shown in FIG. 4, steps S503, S505, S509, and S511 in the embodiment shown in FIG. 5, and steps S603, S605, and S607 in the embodiment shown in FIG. And S609.
  • the processing unit 702 is further configured to perform step S403' in the embodiment shown in FIG. 4, step S504 and step S510 in the embodiment shown in FIG. 5, and step S604 and step S608 in the embodiment shown in FIG.
  • FIG. 8 is a simplified schematic diagram of a physical structure of a communication apparatus according to an embodiment of the present application.
  • the communication apparatus 80 includes a transceiver 801, a processor 802, and a memory 803.
  • the transceiver 801, the processor 802, and the memory 803 may be connected to one another via a bus 804, or may be connected in other manners.
  • the communication device 80 can be a session management network element 101 (e.g., SMF) or a policy control network element 103 (e.g., PCF).
  • the communication device 80 can also be a user plane function network element 102 (e.g., UPF).
  • the communication device 80 may also be a device that integrates the session management network element 101 and the user plane function network element 102, and may also be a device that integrates the session management network element 101, the policy control network element 103, and the user plane function network element 102, and may also It is a device that integrates the session management network element 101, the policy control network element 103, the user plane function network element 102, and other network elements.
  • the other network elements may be access management network elements.
  • the related functions implemented by the transceiver unit 701 shown in FIG. 7 can be implemented by the transceiver 801.
  • the related functions implemented by the processing unit 702 shown in FIG. 7 can be implemented by the processor 802.
  • the memory 803 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read only memory (EPROM), or A compact disc read-only memory (CD-ROM) for storing related instructions and data.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable programmable read only memory
  • CD-ROM compact disc read-only memory
  • the transceiver 801 is configured to transmit data and/or signaling, as well as receive data and/or signaling.
  • the transceiver 801 is configured to perform step S301 and step S303 in the embodiment shown in FIG. 3, and is further configured to perform the implementation shown in FIG. Step S301', step S303' in the example, step S401, step S402, step S404, step S404', step S406 and step S406' in the embodiment shown in Fig. 4, step S501 in the embodiment shown in Fig. 5, Step S502, step S503, step S505, step S506, step S508, step S509, step S511 and step S513, step S601, step S602, step S603, step S606, step S607, step S609 in the embodiment shown in Fig. 6 and Step S611.
  • the transceiver 801 is configured to perform step S303 in the embodiment shown in FIG. 3, step S406 in the embodiment shown in FIG. Step S513 in the embodiment shown in Fig. 5, step S611 in the embodiment shown in Fig. 6.
  • the transceiver 801 is further configured to perform step S303' in the embodiment shown in Fig. 3, step S406' in the embodiment shown in Fig. 4, and step S506 and step S508 in the embodiment shown in Fig. 5.
  • the transceiver 801 is configured to perform step S402 and step S404 in the embodiment shown in FIG. 4, and is further configured to perform the implementation shown in FIG. Step S404' in the example, steps S503, S505, S509 and S511 in the embodiment shown in Fig. 5, steps S603, S605, S607 and S609 in the embodiment shown in Fig. 6.
  • the processor 802 may include one or more processors, for example, including one or more central processing units (CPUs).
  • CPUs central processing units
  • the CPU may be a single core CPU, It can be a multi-core CPU.
  • the processor 802 is configured to perform step S302 in the embodiment shown in FIG. 3, and is further configured to perform the embodiment in the embodiment shown in FIG. Step S302', step S405 and step S405' in the embodiment shown in Fig. 4, step S512 in the embodiment shown in Fig. 5, and step S610 in the embodiment shown in Fig. 6.
  • the processor 802 is configured to perform step S304 in the embodiment shown in FIG. 3, step S407 in the embodiment shown in FIG. Step S514 in the embodiment shown in Fig. 5, step S612 in the embodiment shown in Fig. 6.
  • the processor 802 is further configured to perform step S406' in the embodiment shown in Fig. 3, step S407' in the embodiment shown in Fig. 4, and step S507 in the embodiment shown in Fig. 5.
  • the processor 802 is configured to perform step S403 in the embodiment shown in FIG. 4, and is further configured to perform the method in the embodiment shown in FIG. Step S403', step S504 and step S510 in the embodiment shown in Fig. 5, step S604 and step S608 in the embodiment shown in Fig. 6.
  • the memory 803 is used to store program codes and data of the communication device 80.
  • Figure 8 only shows a simplified design of the first communication device.
  • the first communication device may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, communication units, etc., and all devices that can implement the present application are Within the scope of protection of this application.
  • the embodiment of the present application further provides a communication system, including a session management network element (SMF) and a policy control network element (PCF), and further includes a user plane function network element (UPF), an access management network element (AMF), and an authentication.
  • a user plane function network element UPF
  • AMF access management network element
  • DN-AAA Authorized network element
  • UDM data management network element
  • the program can be stored in a computer readable storage medium, when the program is executed
  • the flow of the method embodiments as described above may be included.
  • the foregoing storage medium includes various media that can store program codes, such as a ROM or a random access memory RAM, a magnetic disk, or an optical disk.
  • yet another embodiment of the present application provides a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the methods described in the various aspects above.
  • Yet another embodiment of the present application also provides a computer program product comprising instructions that, when executed on a computer, cause the computer to perform the methods described in the various aspects above.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in or transmitted by a computer readable storage medium.
  • the computer instructions can be from a website site, computer, server or data center via a wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) Another website site, computer, server, or data center for transmission.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.

Abstract

本申请实施例提供一种通信方法、装置及系统，其中方法可包括如下步骤：会话管理网元获取以太会话可用的以太帧结构信息；所述会话管理网元根据所述以太会话可用的以太帧结构信息生成过滤规则，所述过滤规则包括所述以太会话可用的以太帧结构信息；所述会话管理网元向用户面功能网元发送所述过滤规则。采用本申请实施例，可解决现有技术中只能对非合法MAC地址的以太数据包进行过滤的问题。

Description

一种通信方法、装置及系统
本申请要求于2018年2月14日提交中国国家知识产权局、申请号为201810153171.6、发明名称为“一种通信方法、装置及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，具体涉及一种通信方法、装置及系统。
背景技术
第五代移动通信(5th-generation，5G)系统可以支持互联网协议(internet protocol，IP)会话、以太会话和非结构化会话这三种会话类型。
其中，以太会话建立的过程可包括：1，终端(例如用户终端(user equipment，UE))向网络请求以太会话建立，UE通过接入和移动性管理功能(access and mobility management function，AMF)向会话管理功能(session management function，SMF)发送以太会话建立请求；2，SMF从数据网络-认证授权计费(data network-authentication authorization and accounting，DN-AAA)获取可用的的媒体接入控制(media access control，MAC)地址列表；3，SMF根据UE的MAC地址和以太帧结构为UE提供服务质量(quality of service，QoS)规则(rule)，为用户面功能(user plane function，UPF)提供转发规则(forwarding rule)；4，SMF根据可用的的MAC地址列表为UPF设置过滤规则(filtering rule)；5，UPF根据过滤规则丢弃非合法MAC地址的以太数据包，在接收到UE发送的MAC地址的情况下，将UE的MAC地址与合适的协议数据单元(protocol data unit，PDU)会话绑定，进行数据转发。
目前，不管哪种数据包，都按照上述过程建立以太会话。但是按照上述过程建立以太会话，则只能对非合法MAC地址的以太数据包进行过滤，无法对不同类型的数据包进行过滤。
发明内容
本申请实施例所要解决的技术问题在于，提供一种通信方法、装置及系统，解决了现有技术中只能对非合法MAC地址的以太数据包进行过滤的问题。
本申请实施例第一方面提供一种通信装置，包括：
会话管理网元获取以太会话可用的以太帧结构信息；
会话管理网元根据以太会话可用的以太帧结构信息生成过滤规则，过滤规则包括以太会话可用的以太帧结构信息；
会话管理网元向用户面功能网元发送过滤规则。
第一方面，会话管理网元通过根据获取的以太会话可用的以太帧结构信息生成过滤规则，并向用户面功能网元发送该过滤规则，使得用户面功能网元可根据过滤规则所包括的以太帧结构信息进行针对性地过滤。
结合第一方面，在一种可能的实现方式中，上述以太帧结构信息包括以太协议类型和虚 拟局域网(virtual local area network，VLAN)标签中的至少一种。以太协议类型用于标识是哪种类型的以太协议或者以太协议封装的协议。以太协议类型可以是802.3定义的以太协议类型，也可以是802.1q定义的以太协议类型。以太协议封装的协议可以是IP协议、地址解析协议、反向地址解析协议、多协议标记转换协议等。VLAN tag可以包括VLAN标识、优先级代码点和丢弃合格指示中的至少一种。通过以太帧结构信息来区分不同的以太协议类型或以太协议封装的协议，以便SMF生成过滤规则，实现针对性地过滤。
结合第一方面，在一种可能的实现方式中，会话管理网元在生成过滤规则的同时或之后，可生成转发规则，并向用户面功能网元发送转发规则。会话管理网元可根据以太会话可用的以太帧结构信息生成转发规则，也可根据以太会话可用的以太过滤器和以太会话可用的以太帧结构信息生成转发规则。该转发规则可用于用户面功能网元进行转发处理。
结合第一方面，在一种可能的实现方式中，转发规则包括以太会话可用的路径转发信息和以太会话可用的以太帧结构信息，或包括以太会话可用的路径转发信息和以太会话可用的以太过滤器，或包括以太会话可用的路径转发信息、以太会话可用的以太过滤器和以太会话可用的以太帧结构信息。转发规则用于策略控制网元将数据包转发到与数据包的以太帧结构信息相匹配的路径上，从而实现根据数据包的以太帧结构信息进行针对性转发。
其中，以太会话可用的路径转发信息包括用户面功能网元与另一个用户面功能网元之间的转发路径信息、用户面功能网元与接入网之间的转发路径信息和用户面功能网元与数据网络之间的转发路径信息中的至少一种。
其中，用户面功能网元与另一个用户功能网元之间的转发路径信息可包括N9隧道信息。用户面功能网元与接入网之间的转发路径信息可包括隧道标识、接入网的IP地址、隧道端点标识中的至少一种。用户面功能网元与数据网络之间的转发路径信息可包括数据网络接入标识、数据网络名称、网络地址转换标识/地址、N6隧道信息中的至少一种。
结合第一方面，在一种可能的实现方式中，会话管理网元可通过策略控制网元获取以太会话可用的以太帧结构信息，具体地，会话管理网元向策略控制网元发送以太会话初始可用的以太帧结构信息，接收来自策略控制网元的以太会话可用的以太帧结构信息，以太会话可用的以太帧结构信息包括调整后的以太会话初始可用的以太帧结构信息。
其中，会话管理网元向策略控制网元发送的以太会话初始可用的以太帧结构信息，可以是会话管理网元接收的以太会话建立请求中的以太会话可用的第一以太帧结构信息，以太会话可用的第一以太帧结构信息可以是终端支持的以太帧结构信息；可以是会话管理网元接收的签约信息中的以太会话可用的第二以太帧结构信息，以太会话可用的第二以太帧结构信息可以是终端所签约的以太帧结构信息；可以是会话管理网元接收的认证授权响应中的以太会话可用的第三以太帧结构信息，以太会话可用的第三以太帧结构信息可以是数据网络支持的以太帧结构信息；可以是会话管理网元接收的事件报告中的以太会话可用的第四以太帧结构信息，以太会话可用的第四以太帧结构信息可以是终端可用的以太帧结构信息；还可以是会话管理网元接收的以太过滤器所封装的终端可用的以太帧结构信息等等。
结合第一方面，在一种可能的实现方式中，会话管理单元可通过接收以太会话建立请求获取以太会话可用的以太帧结构信息，该以太会话建立请求包括以太会话可用的第一以太帧结构信息，以太会话可用的第一以太帧结构信息可以是终端支持的以太帧结构信息，即会话管理网元将以太会话建立请求所包括的终端支持的以太帧结构信息确定为以太会话可用的 以太帧结构信息。
结合第一方面，在一种可能的实现方式中，会话管理网元可通过数据管理网元的签约信息获取以太会话可用的以太帧结构信息，该签约信息是终端的签约信息，包括以太会话可用的第二以太帧结构信息，以太会话可用的第二以太帧结构信息可以是终端所签约的以太帧结构信息，即会话管理网元将终端所签约的以太帧结构信息确定为以太会话可用的以太帧结构信息。
结合第一方面，在一种可能的实现方式中，会话管理网元可通过认证授权网元的认证授权响应获取以太会话可用的以太帧结构信息，该认证授权响应包括以太会话可用的第三以太帧结构信息，以太会话可用的第三以太帧结构信息可以是数据网络支持的以太帧结构信息，即会话管理网元将终端所数据网络支持的以太帧结构信息确定为以太会话可用的以太帧结构信息。
结合第一方面，在一种可能的实现方式中，会话管理网元可通过用户面功能网元的事件报告获取以太会话可用的以太帧结构信息，事件报告包括以太会话可用的第四以太帧结构信息，以太会话可用的第四以太帧结构信息可以是终端可用的以太帧结构信息，会话管理网元将终端可用的以太帧结构信息确定为以太会话可用的以太帧结构信息。
结合第一方面，在一种可能的实现方式中，会话管理网元通过用户面功能网元的事件报告获取以太会话可用的以太帧结构信息时，先接收来自认证授权网元的认证授权响应，该认证授权响应中包括可用的媒体接入控制地址(media access control，MAC)列表和配置文件索引；然后将可用的MAC地址列表和配置文件索引发送至策略控制网元，以便策略控制网元生成事件触发器，该事件触发器包括可用的MAC地址列表中的MAC地址或终端可用的以太帧结构信息；然后向用户面功能网元发送该事件触发器，以便用户面功能网元向会话管理网元发送事件报告，该事件报告包括终端可用的以太帧结构信息，从而会话管理网元将终端可用的以太帧结构信息确定为以太会话可用的以太帧结构信息，实现通过用户面功能网元获取以太会话可用的以太帧结构信息。
结合第一方面，在一种可能的实现方式中，会话管理网元可通过终端获取以太会话可用的以太帧结构信息，具体地，会话管理网元先接收来自认证授权网元的认证授权响应，该认证授权响应中包括可用的MAC地址列表和配置文件索引；然后将可用的MAC地址列表和配置文件索引发送至策略控制网元，以便策略控制网元生成事件终端路由选择策略，该终端路由选择策略包括终端可用的以太帧结构信息；然后会话管理网元接收来自终端的以太会话修改请求，该以太会话修改请求包括以太过滤器，该以太过滤器封装有终端可用的以太帧结构信息，会话管理网元可将以太过滤器所封装的终端可用的以太帧结构信息确定为以太会话可用的以太帧结构信息，也可将该以太过滤器发送至策略控制网元，由策略控制网元对终端可用的以太帧结构信息进行调整，并将策略控制网元反馈的调整后的终端可用的以太帧结构信息确定切以太会话可用的以太帧结构信息。
本申请实施例第二方面提供一种会话管理网元，该会话管理网元具有实现第一方面提供方法的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的单元。
在一种可能实现的方式中，该会话管理网元包括：处理单元和收发单元；收发单元，用于获取以太会话可用的以太帧结构信息；处理单元，用于根据以太会话可用的以太帧结构信 息生成过滤规则，过滤规则包括以太会话可用的以太帧结构信息；收发模块，还用于向用户面功能网元发送过滤规则。
在一种可能实现的方式中，该会话管理网元包括：处理器、收发器和存储器，其中，收发器用于接收和发送信息，存储器中存储计算机执行指令，处理器通过总线与存储器和收发器连接，处理器执行存储器中存储的计算机执行指令，以使该会话管理网元执行以下操作：获取以太会话可用的以太帧结构信息；用于根据以太会话可用的以太帧结构信息生成过滤规则，过滤规则包括以太会话可用的以太帧结构信息；向用户面功能网元发送过滤规则。
基于同一发明构思，由于该会话管理网元解决问题的原理以及有益效果可以参见第一方面所述的方法以及所带来的有益效果，因此该会话管理网元的实施可以参见方法的实施，重复之处不再赘述。
本申请实施例第三方面提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第一方面所述的方法。
本申请实施例第四方面提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面所述的方法。
本申请实施例第五方面提供一种通信方法，包括：
策略控制网元接收来自会话管理网元的以太会话初始可用的以太帧结构信息；
策略控制网元调整以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，以太会话可用的以太帧结构信息包括调整后的以太会话初始可用的以太帧结构信息；
策略控制网元向会话管理网元发送以太会话可用的以太帧结构信息。
第五方面，策略控制网元可对以太会话初始可用的以太帧结构信息进行调整，以符合网络或应用需求，将调整后的以太会话初始可用的以太帧结构信息发送至会话管理网元，进而便于会话管理网元生成符合网络或应用需求的过滤规则。
结合第五方面，在一种可能的实现方式中，策略控制网元在得到以太会话可用的以太帧结构信息的情况下，根据以太会话可用的以太帧结构信息生成以太会话可用的以太过滤器，并向会话管理网元发送以太会话可用的以太过滤器，以便会话管理网元生成转发规则。
结合第五方面，在一种可能的实现方式中，策略控制网元根据策略信息调整以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，策略信息包括本地配置或应用允许的以太帧结构信息，即策略控制网元根据策略信息将以太会话初始可用的以太帧结构信息中与策略信息不匹配的以太帧结构信息删除，使得以太会话可用的以太帧结构信息符合本地配置或应用要求。
结合第五方面，在一种可能的实现方式中，策略控制网元接收来自会话管理网元的配置文件索引，并根据配置文件索引确定策略信息，即查找配置文件索引对应的策略信息。策略控制网元确定策略信息以便根据策略信息调整以太会话初始可用的以太帧结构信息。
结合第五方面，在一种可能的实现方式中，接收来自会话管理网元的可用的MAC地址列表和配置文件索引，根据可用的MAC地址列表和配置文件索引生成事件触发器，事件触发器包括终端的可用的MAC地址列表中的MAC地址或终端可用的以太帧结构信息，并向会话管理网元发送事件触发器。
结合第五方面，在一种可能的实现方式中，策略控制网元接收来自会话管理网元的可用的MAC地址列表和配置文件索引；根据可用的MAC地址列表和配置文件索引生成终端路由选 择策略，终端路由选择策略用于触发终端修改以太会话，策略控制网元可通过接入管理网元向终端发送终端路由选择策略。
本申请实施例第六方面提供一种策略控制网元，该策略控制网元具有实现第五方面提供方法的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的单元。
在一种可能实现的方式中，该策略控制网元包括：处理单元和收发单元；收发单元，用于接收来自会话管理网元的以太会话初始可用的以太帧结构信息；处理单元，用于调整以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，以太会话可用的以太帧结构信息包括调整后的以太会话初始可用的以太帧结构信息；收发单元，还用于向会话管理网元发送以太会话可用的以太帧结构信息。
在一种可能实现的方式中，该策略控制网元包括：处理器、收发器和存储器，其中，收发器用于接收和发送信息，存储器中存储计算机执行指令，处理器通过总线与存储器和收发器连接，处理器执行存储器中存储的计算机执行指令，以使该策略控制网元执行以下操作：接收来自会话管理网元的以太会话初始可用的以太帧结构信息；调整以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，以太会话可用的以太帧结构信息包括调整后的以太会话初始可用的以太帧结构信息；向会话管理网元发送以太会话可用的以太帧结构信息。
基于同一发明构思，由于该策略控制网元解决问题的原理以及有益效果可以参见第五方面所述的方法以及所带来的有益效果，因此该策略控制网元的实施可以参见方法的实施，重复之处不再赘述。
本申请实施例第七方面提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第五方面所述的方法。
本申请实施例第八方面提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第五方面所述的方法。
本申请实施例第九方面提供一种通信方法，包括：
用户面功能网元接收来自会话管理网元的过滤规则，过滤规则包括以太会话可用的以太帧结构信息；
用户面功能网元在数据包的以太帧结构信息与以太会话可用的以太帧结构信息匹配的情况下，对数据包进行转发处理；
或，用户面功能网元在数据包的以太帧结构与以太会话可用的以太帧结构信息不匹配的情况下，丢弃数据包。
第九方面，用户面功能网元可结合过滤规则和数据包的以太帧结构信息对数据包进行针对地过滤。
结合第九方面，在一种可能的实现方式中，用户面功能网元还接收来自会话管理网元的转发规则，该转发规则包括以太会话可用的路径转发信息和调整后的以太会话可用的以太帧结构信息；或，包括以太会话可用的路径转发信息和调整后的以太会话可用的以太过滤器；或，包括以太会话可用的路径转发信息、以太会话可用的以太过滤器和调整后的以太会话可用的以太帧结构信息。用户面功能网元可根据转发规则对数据包进行针对性转发。
结合第九方面，在一种可能的实现方式中，用户面功能网元在数据包的以太帧结构信息 与以太会话可用的以太帧结构信息匹配的情况下，根据转发规则对数据包进行针对性转发。
结合第九方面，在一种可能的实现方式中，用户面功能网元在接收到事件触发器的情况下，该事件触发器包括终端的媒体接入控制地址或终端可用的以太帧结构信息，向会话管理网元发送事件报告，该事件报告包括终端可用的以太帧结构信息，以便会话管理网元将终端可用的以太帧结构信息确定为以太会话可用的以太帧结构信息。
本申请实施例第十方面提供一种用户面功能网元，该用户面功能网元具有实现第九方面提供方法的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的单元。
在一种可能实现的方式中，该用户面功能网元包括：处理单元和收发单元；收发单元，用于接收来自会话管理网元的过滤规则，过滤规则包括以太会话可用的以太帧结构信息；处理单元，用于在数据包的以太帧结构信息与以太会话可用的以太帧结构信息匹配的情况下，对数据包进行转发处理；
或，处理单元，用于在数据包的以太帧结构与以太会话可用的以太帧结构信息不匹配的情况下，丢弃数据包。
在一种可能实现的方式中，该用户面功能网元包括：处理器、收发器和存储器，其中，收发器用于接收和发送信息，存储器中存储计算机执行指令，处理器通过总线与存储器和收发器连接，处理器执行存储器中存储的计算机执行指令，以使该用户面功能网元执行以下操作：接收来自会话管理网元的过滤规则，过滤规则包括以太会话可用的以太帧结构信息；在数据包的以太帧结构信息与以太会话可用的以太帧结构信息匹配的情况下，对数据包进行转发处理；或，在数据包的以太帧结构与以太会话可用的以太帧结构信息不匹配的情况下，丢弃数据包。
基于同一发明构思，由于该用户面功能网元解决问题的原理以及有益效果可以参见第九方面所述的方法以及所带来的有益效果，因此该策略控制网元的实施可以参见方法的实施，重复之处不再赘述。
本申请实施例第十一方面提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第九方面所述的方法。
本申请实施例第十二方面提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第九方面所述的方法。
本申请实施例第十三方面提供一种通信方法，包括：
终端接收来自策略控制网元的终端路由选择策略；
终端检测数据包的以太帧结构信息是否满足终端路由选择策略；
终端在检测到数据包的以太帧结构信息满足终端路由选择策略的情况下，触发以太会话修改。
其中，终端路由选择策略包括非IP描述符，非IP描述符用于指示终端可用的以太帧结构信息。终端将要发送上行数据包时，检测上行数据包的以太帧结构信息与非IP描述符所指示的以太帧结构信息是否匹配，并在匹配的情况下，确定该上行数据包的以太帧结构信息满足终端路由选择策略。
终端触发以太会话修改即终端向会话管理网元发送以太过滤器，该以太过滤器封装有终端可用的以太帧结构信息。终端可通过接入管理网元向会话管理网元发送以太过滤器。
第十三方面，终端根据终端路由选择策略触发以太会话修改，通过在以太会话修改请求中携带以太过滤器，以便会话管理网元获取终端可用的以太帧结构信息。
本申请实施例第十四方面提供一种终端，该终端具有实现第十三方面提供方法的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的单元。
在一种可能实现的方式中，该终端包括：处理单元和收发单元；收发单元，用于接收来自策略控制网元的终端路由选择策略；处理单元，用于检测数据包的以太帧结构信息是否满足所述终端路由选择策略；收发单元，还用于在处理单元检测到所述数据包的以太帧结构信息满足终端路由选择策略的情况下，触发以太会话修改。
在一种可能实现的方式中，该终端包括：处理器、收发器和存储器，其中，收发器用于接收和发送信息，存储器中存储计算机执行指令，处理器通过总线与存储器和收发器连接，处理器执行存储器中存储的计算机执行指令，以使该用户面功能网元执行以下操作：收来自策略控制网元的终端路由选择策略；检测数据包的以太帧结构信息是否满足终端路由选择策略；在检测到数据包的以太帧结构信息满足终端路由选择策略的情况下，触发以太会话修改。
基于同一发明构思，由于该终端解决问题的原理以及有益效果可以参见第十三方面所述的方法以及所带来的有益效果，因此该终端的实施可以参见方法的实施，重复之处不再赘述。
本申请实施例第十五方面提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第十三方面所述的方法。
本申请实施例第十六方面提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第十三方面所述的方法。
本申请实施例第十七方面提供一种通信系统，包括：
会话管理网元获取以太会话可用的以太帧结构信息；根据所述以太会话可用的以太帧结构信息生成过滤规则，过滤规则包括所述以太会话可用的以太帧结构信息；向用户面功能网元发送所述过滤规则；
用户面功能网元接收所述过滤规则。
第十七方面，会话管理网元将生成的携带以太会话可用的以太帧结构信息的过滤规则发送至用户面功能网元，以便用户面功能网元根据过滤规则进行针对性地过滤处理。
结合第十七方面，在一种可能的实现方式中，用户面功能网元在数据包的以太帧结构信息与以太会话可用的以太帧结构信息匹配的情况下，对数据包进行转发处理；或，用户面功能网元在数据包的以太帧结构与以太会话可用的以太帧结构信息不匹配的情况下，丢弃数据包，从而实现用户面功能网元根据数据包的以太帧结构信息进行针对性地过滤处理。
结合第十七方面，在一种可能的实现方式中，会话管理网元生成转发规则，并向用户面功能网元发送转发规则，用户面功能网元接收转发规则，并根据转发规则进行转发处理。
其中，转发规则包括以太会话可用的路径转发信息和调整后的以太会话可用的以太帧结构信息；或，包括以太会话可用的路径转发信息和调整后的以太会话可用的以太过滤器；或，包括以太会话可用的路径转发信息、以太会话可用的以太过滤器和调整后的以太会话可用的以太帧结构信息。
结合第十七方面，在一种可能的实现方式中，会话管理网元向策略控制网元发送以太会话初始可用的以太帧结构信息，策略控制网元在接收到以太会话初始可用的以太帧结构信息 的情况下，调整以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，实现策略控制网元动态调整以太帧结构信息。
本申请实施例第十八方面提供一种通信系统，包括会话管理网元和用户面功能网元，
会话管理网元，用于获取以太会话可用的以太帧结构信息；根据以太会话可用的以太帧结构信息生成过滤规则，过滤规则包括以太会话可用的以太帧结构信息；向用户面功能网元发送过滤规则；
用户面功能网元，用于接收过滤规则。
第十八方面，会话管理网元将生成的携带以太会话可用的以太帧结构信息的过滤规则发送至用户面功能网元，以便用户面功能网元根据过滤规则进行针对性地过滤处理。
本申请实施例第十四方面提供的系统中的会话管理网元用于执行第一方面提供的方法，用户面功能网元用于执行第九方面提供的方法。
结合第十四方面，在一种可能的实现方式中，该系统还包括策略控制网元，策略控制网元用于执行第五方面提供的方法。
结合第十四方面，在一种可能的实现方式中，该系统还包括终端，终端用于执行第十三方面提供的方法。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1为应用本申请实施例的网络架构示意图；
图2为第五代移动通信系统的网络架构示意图；
图3为本申请实施例一提供的通信方法的流程示意图；
图4为本申请实施例二提供的通信方法的流程示意图；
图5为本申请实施例三提供的通信方法的流程示意图；
图6为本申请实施例四提供的通信方法的流程示意图；
图7为本申请实施例提供的通信装置的逻辑结构示意图；
图8为本申请实施例提供的通信装置的实体结构简化示意图。
具体实施方式
请参见图1，为应用本申请实施例的网络架构示意图，该网络架构包括会话管理网元101、用户面功能网元102，还可以包括策略控制网元103、数据管理网元104、认证授权网元105或接入管理网元106。
其中，会话管理网元101属于核心网控制面网元，负责终端的会话管理，可以对IP会话、以太会话和非结构化会话三种类型的会话进行管理。会话管理网元101可以是5G系统中的SMF，也可以是未来通信系统中负责会话管理的网元。应用在本申请实施例中，会话管理网元101可获取以太会话可用的以太帧结构信息，生成过滤规则，与用户面功能网元102进行通信，例如会话管理网元101向用户面功能网元102发送过滤规则。会话管理网元101可通过如下几种方式获取以太会话可用的以太帧结构信息：A，通过接收来自接入网管理网元106的以太会话建立请求获取以太会话可用的以太帧结构信息，该以太会话建立请求可携 带终端支持的以太帧结构信息；B，通过接收来自数据管理网元104的终端的签约信息获取以太会话可用的以太帧结构信息，该签约信息包括终端签约的以太帧结构信息；C，通过接收来自认证授权网元105的认证授权响应获取以太会话可用的以太帧结构信息，该认证授权响应包括数据网络支持的以太帧结构信息。会话管理网元101还可生成转发规则，向用户面功能网元102发送转发规则等。
用户面功能网元102属于核心网用户面功能网元，负责根据会话管理网元的路由规则执行数据包转发。用户面功能网元102可以是5G系统中的UPF，也可以是未来通信系统中负责数据包转发的网元。应用在本申请实施例中，用户面功能网元102可与会话管理网元101进行通信，例如，用户面功能网元102可接收来自会话管理网元101的过滤规则。用户面功能网元102还可根据过滤规则对数据包进行过滤处理，还可接收来自会话管理网元101的转发规则，并根据转发规则对数据包进行转发处理等。
策略控制网元103属于核心网控制面网元，负责用户策略管理，例如计费策略等。策略控制网元103可以是5G系统中的PCF，也可以是未来通信系统中负责策略管理的网元。应用在本申请实施例中，策略控制网元103可与会话管理网元101进行通信，例如，策略控制网元103可接收来自会话管理网元101的以太帧结构信息。策略控制网元103还可向会话管理网元101发送调整后的以太帧结构信息。策略控制网元103还与接入管理网元106进行通信，例如可通过接入管理网元106向终端发送消息等。
数据管理网元104属于核心网控制面网元，负责管理用户签约信息。数据管理网元104可以是5G系统中的UDM，也可以是未来通信系统中负责管理用户签约信息的网元。应用在本申请实施例中，数据管理网元104可与会话管理网元101进行通信。例如，数据管理网元104可向会话管理网元101提供终端签约的以太帧结构信息。
认证授权网元105负责对用户进行安全认证、授权等，例如对终端上的社交应用程序的用户进行认证、授权等。认证授权网元105可以是DN-AAA，即认证授权网元105是5G系统中数据网络中的一个网元，还可以是未来通信系统中数据网络中负责对用户认证授权的网元。应用在本申请实施例中，认证授权网元105可与会话管理网元101进行通信。例如，认证授权网元105向会话管理网元101提供数据网络支持的以太帧结构信息、可用的媒体接入控制(media access control，MAC)地址列表、配置文件索引等。
接入管理网元106属于核心网控制面网元，负责终端的接入管理和移动性管理。接入管理网元106可以是5G系统中的接入和移动性管理功能(access and mobility management function，AMF)，也可以是未来通信系统中负责接入和移动性管理的网元。应用在本申请实施例中，接入管理网元106可与会话管理网元101、策略控制网元103和终端进行通信。例如，接入管理网元106可接收来自终端的以太会话建立请求，并向会话管理网元101发送该以太会话建立请求；可接收来自终端的以太会话修改请求，并向会话管理网元101发送该以太会话修改请求；可接收来自策略控制网元103的传输非接入层(non-access stratum，NAS)传输消息的请求，并向终端发送非接入层传输消息等。可以理解的是，接入管理网元106相当于终端与会话管理网元101之间的中转站，相当于终端与策略控制网元103之间的中转站。需要说明的是，接入管理网元106与终端之间还存在接入网，接入网实现将终端接入网络。
其中，终端(terminal)可为UE、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等，是一种向用户提供语音和/或数据连通性的设备，例如，具有无线连接功能的手持 式设备、车载设备等。目前，一些终端的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。
可参见图2，为5G系统的网络架构示意图，该网络架构示意图包括认证服务器功能(authentication server function，AUSF)、统一数据管理(UDM)、接入和移动性管理(AMF)、会话管理功能(SMF)、策略控制功能(PCF)、应用功能(application function，AF)、终端、接入网(access network，AN)、用户面功能(UPF)和数据网络(data network，DN)。其中，接入网可以是无线接入网(radio access network，RAN)。
其中，终端与AMF之间的接口为N1接口，(R)AN与AMF之间的接口为N2接口，(R)AN与UPF之间的接口为N3接口，UPF与SMF之间的接口为N4接口，PCF与AF之间的接口为N5接口，UPF与DN之间的接口为N6接口，SMF与PCF之间的接口为N7接口，AMF与UDM之间的接口为N8接口，UPF与UPF之间的接口为N9接口，UDM与SMF之间的接口为N10接口，SMF与AMF之间的接口为N11接口，AMF与AUSF之间的接口为N12接口，AUSF与UDM之间的接口为N13接口，AMF与AMF之间的接口为N14接口，AMF与PCF之间的接口为N15接口。
终端是移动用户与网络交互的入口，能够提供基本的计算能力，存储能力，向用户显示业务窗口，接受用户操作输入。终端与(R)AN建立信号连接，数据连接，从而传输控制信号和业务数据到移动网络。
(R)AN类似于传统网络里面的基站，部署在靠近终端设备的位置，为特定区域的授权用户提供入网功能，并能够根据用户的级别，业务的需求等使用不同质量的传输隧道传输用户数据。(R)AN能够管理自身的资源，合理利用，按需为终端提供接入服务，把控制信号和用户数据在终端与核心网之间转发。
核心网负责维护移动网络的签约数据，管理移动网络的网元，为终端提供会话管理，移动性管理，策略管理，安全认证等功能。在终端附着的时候，为终端提供入网认证；在终端有业务请求时，为终端分配网络资源；在终端移动的时候，为终端更新网络资源；在终端空闲的时候，为终端提供快恢复机制；在终端去附着的时候，为终端释放网络资源；在终端有业务数据时，为终端提供数据路由功能，如转发上行数据到数据网络；或者从数据网络接收下行数据，转发到(R)AN，从而发送给终端。核心网包括UPF、AUSF、AMF、SMF、UDM、PCF和AF。核心网用户面包括UPF，核心网控制面包括AUSF、AMF、SMF、UDM、PCF和AF。
UPF，根据SMF的路由规则执行用户数据包转发。AUSF，负责终端的安全认证。AMF，负责终端的接入管理和移动性管理。SMF，负责终端的会话管理。UDM，负责用户签约信息管理。PCF，负责用户策略管理。AF，负责用户应用管理。
数据网络是为用户提供业务服务的数据网络，一般客户端位于终端，服务端位于数据网络。数据网络可以是私有网络，如局域网，也可以是不受运营商管控的外部网络，如因特网(Internet)，还可以是运营商共同部署的专有网络，如为了配置IP多媒体网络子系统(IP multimedia core network subsystem，IMS)服务。
本申请实施例中，图1所示网络架构中的各个网元可以图2所示网络架构中相应的网元为例进行介绍，即会话管理网元101以SMF为例，用户面功能网元102以UPF为例，策略控制网元103以PCF为例，数据管理网元104以UDM为例，认证授权网元105以DN-AAA为例，接入管理网元106以AMF为例。
鉴于目前的以太会话建立过程不区分以太帧结构，只能对非合法MAC地址的以太数据包进行过滤的弊端，本申请实施例提供一种通信方法、装置及系统，解决了现有技术中只能对非合法MAC地址的以太数据包进行过滤的问题，实现可以根据数据包的以太帧结构进行针对性地过滤。
下面对本申请实施例提供的通信方法进行详细的介绍，以5G系统下的网络架构为例进行介绍。
请参见图3，为本申请实施例一提供的通信方法的流程示意图，该方法可以包括但不限于如下步骤：
步骤S301，SMF获取以太会话可用的以太帧结构信息。
其中，以太会话可用的以太帧结构信息，用于描述终端请求建立的以太会话可用的以太帧结构信息，即用于描述终端请求建立的以太会话可使用哪种类型的以太帧结构。以太会话可用的以太帧结构信息这个名称并不构成对本申请实施例的限定，也可以用以太会话支持的以太帧结构信息，或以太会话相关联的以太帧结构信息等名称来描述终端请求建立的以太会话可用的以太帧结构信息。
目前，标准中定义了六种类型的以太帧结构/以太协议和多种以太协议可以封装的协议，本申请实施例采用以太帧结构信息对这六种以太帧结构/以太协议和其封装的协议进行区分。以太帧结构信息可以包括以太协议类型(type)和虚拟局域网(virtual local area network，VLAN)标签(tag)中的至少一种。
其中，以太协议类型用于标识是哪种类型的以太协议或者以太协议封装的协议。以太协议可以是802.3定义的以太协议类型，也可以是802.1q定义的以太协议类型。若以太协议类型为802.1q所定义的以太协议类型，则以太帧结构信息需包括VLAN tag，若以太协议类型为802.3所定义的以太协议类型，则以太帧结构信息不包括VLAN tag。以太协议封装的协议可以是IP(IPv4,IPv6)协议，地址解析协议(address resolution protocol，ARP)，反向地址解析协议(reverse address resolution protocol，RARP)，多协议标记转换(multi-protocol label switching，MPLS)协议等。
其中，VLAN tag可包括VLAN标识(VLAN ID，VID)，VID用于标识是哪个VLAN。VLAN tag还可以包括优先级代码点(pority code point，PCP)和丢弃合格指示(drop eligible indicator，DEI)中的至少一种。
在一个示例中，SMF可通过以下四种方式获取以太会话可用的以太帧结构信息：
方式一，步骤S301a，SMF接收以太会话建立请求，通过以太会话建立请求获取以太会话可用的以太帧结构信息。
SMF可通过AMF接收来自终端的以太会话建立请求，该以太会话建立包括以太会话可用的第一以太帧结构信息。其中，以太会话可用的第一以太帧结构信息可以是终端支持的以太帧结构信息，终端支持的以太帧结构信息可从以太会话建立请求所携带的UE MAC capability中读取。SMF将以太会话可用的第一以太帧结构信息确定为以太会话可用的以太帧结构信息。
方式二，步骤S301b，SMF接收来自UDM的签约信息，通过签约信息获取以太会话可用的以太帧结构信息。
SMF向UDM发送签约信息获取请求，UDM在接收到签约信息获取请求的情况下，向SMF反馈签约信息，该签约信息是终端的签约信息，包括以太会话可用的第二以太帧结构信息。其中，以太会话可用的第二以太帧结构信息可以是终端所签约的以太帧结构信息。SMF将以太会话可用的第二以太帧结构信息确定为以太会话可用的以太帧结构信息。
方式三，步骤S301c，SMF接收来自DN-AAA的认证授权响应，通过认证授权响应获取以太会话可用的以太帧结构信息。
SMF向DN-AAA发送认证授权请求，DN-AAA在接收到该认证授权请求的情况下，向SMF反馈认证授权响应，该认证授权响应包括以太会话可用的第三以太帧结构信息。其中，以太会话可用的第三以太帧结构信息可以是数据网络支持的以太帧结构信息，数据网络支持的以太帧结构信息可用supported Ethernet protocol information来表示。SMF将以太会话可用的第三以太帧结构信息确定为以太会话可用的以太帧结构信息。
方式四，步骤S301d，SMF接收来自UPF的事件报告，通过事件报告获取以太会话可用的以太帧结构信息。
其中，事件报告包括以太会话可用的第四以太帧结构信息，以太会话可用的第四以太帧结构信息可以是终端可用的以太帧结构信息，SMF将终端可用的以太帧结构信息确定为以太会话可用的以太帧结构信息。该方式四将通过图5所示实施例进行详细介绍。
步骤S302，SMF根据以太会话可用的以太帧结构信息生成过滤规则，该过滤规则包括以太会话可用的以太帧结构信息。
SMF在获取到以太会话可用的以太帧结构信息的情况下，根据以太会话可用的以太帧结构信息生成过滤规则(filtering rule)，即将以太会话可用的以太帧结构信息携带在过滤规则中。
步骤S303，SMF向UPF发送过滤规则。相应地，UPF接收来自SMF的过滤规则。
SMF在生成过滤规则之后，可通过N4消息向UPF发送过滤规则，以便UPF根据过滤规则对数据包进行过滤处理。
UPF在接收到过滤规则的情况下，可向SMF反馈N4消息，该N4消息用于指示UPF接收到过滤规则。SMF在接收到UPF反馈的N4消息的情况下，可通过AMF向终端发送以太会话建立响应，该以太会话建立响应用于告知终端以太会话建立完成，终端可发送上行数据或接收下行数据。
步骤S304，UPF根据以太会话可用的以太帧结构信息对数据包进行过滤处理。
UPF在接收到过滤规则和数据包的情况下，将数据包的以太帧结构信息与过滤规则所包括的以太会话可用的以太帧结构信息进行匹配，即判断数据包的以太帧结构信息与过滤规则所包括的以太会话可用的以太帧结构信息是否相同，或判断数据包的以太帧结构信息是否包含在过滤规则所包括的以太会话可用的以太帧结构信息中。
在数据包的以太帧结构信息与以太会话可用的以太帧结构信息匹配的情况下，UPF对数据包进行转发处理。在数据包的以太帧结构信息与以太会话可用的以太帧结构信息不匹配的情况下，UPF丢弃数据包。
其中，数据包可以是上行数据包，也可以是下行数据包。可以理解的是，通过携带以太 会话可用的以太帧结构信息的过滤规则，可根据数据包的以太帧结构信息针对性地实现上行数据包和下行数据包的过滤。
在图3所示的实施例中，通过SMF生成过滤规则，该过滤规则包括以太会话可用的以太帧结构信息，并向UPF发送该过滤规则，以便UPF可根据该过滤规则对数据包进行针对性地过滤。
在一个示例中，步骤S302之后，还包括：
步骤S302’，SMF根据以太会话可用的以太帧结构信息生成转发规则。
其中，转发规则用于UPF确定数据包的转发路径。转发规则可包括以太会话可用的以太帧结构信息和以太会话可用的路径转发信息，或包括以太会话可用的以太过滤器和以太会话可用的路径转发信息，或包括以太会话可用的以太帧结构信息、以太会话可用的以太过滤器和以太会话可用的路径转发信息。
在一个示例中，SMF可根据以太会话可用的以太帧结构信息生成转发规则，即将以太会话可用的以太帧结构信息携带在转发规则中。转发规则除包括以太会话可用的以太帧结构信息之外，还包括以太会话可用的路径转发信息。
在一个示例中，SMF可根据以太会话可用的以太帧结构信息和以太会话可用的以太过滤器生成转发规则。该示例中，转发规则可包括以太会话可用的以太帧结构信息和以太会话可用的路径转发信息，或包括以太会话可用的以太过滤器和以太会话可用的路径转发信息，或包括以太会话可用的以太帧结构信息、以太会话可用的以太过滤器和以太会话可用的路径转发信息。
其中，以太会话可用的以太过滤器用于描述终端请求建立的以太会话可使用的以太过滤器。以太过滤器也可以称为以太包过滤器(Ethernet Packet Filters)。该以太会话可用的以太过滤器可以是SMF从PCF获取的，也可以是SMF从终端获取的，还可以是SMF通过其他方式获取的。
其中，以太过滤器可包括：源MAC地址/目的MAC地址、802.3定义的以太协议类型、802.1q定义的客户端VLAN tag/服务端VLAN tag中的VID、802.1q定义的客户端VLAN tag/服务端VLAN tag中的PCP/DEI和包过滤方向等。
转发规则中的以太会话可用的以太帧结构信息和以太会话可用的以太过滤器中的至少一种，用于UPF选择以太会话可用的路径转发信息，用于UPF确定将数据包发向谁。可以理解的是，一种以太会话可用的以太帧结构信息可以对应一种以太会话可用的路径转发信息，或一种以太会话可用的以太过滤器可以对应一种以太会话可用的路径转发信息。换言之，转发规则包括以太会话可用的以太帧结构信息与以太会话可用的路径转发信息之间的对应关系，或包括以太会话可用的以太过滤器与以太会话可用的路径转发信息之间的对应关系。
其中，以太会话可用的路径转发信息包括UPF与另一个UPF之间的转发路径信息、UPF与(R)AN之间的转发路径信息和UPF与数据网络之间的转发路径信息中的至少一种。UPF与另一个UPF之间的转发路径信息可包括N9隧道信息。UPF与(R)AN之间的转发路径信息可包括隧道标识(tunnel ID)、(R)AN的IP地址、隧道端点标识(tunnel endpoint identifier，TEID)中的至少一种。UPF与数据网络之间的转发路径信息包括数据网络接入标识(data network access identifier，DNAI)、数据网络名称(data network name，DNN)、网络地址转换(network address translation，NAT)标识/地址和N6隧道信息中的至少一种。
需要说明的是，步骤S302’可与步骤S302同时执行，也可先执行步骤S302，再执行步骤S302’。
步骤S303’，SMF向UPF发送转发规则。相应地，UPF接收来自SMF的转发规则。
需要说明的是，步骤S303’可与步骤S303同时执行，即SMF可通过N4消息同时向UPF发送过滤规则和转发规则。
步骤S304’，UPF根据转发规则对数据包进行转发处理。
UPF在接收到转发规则的情况下，根据转发规则对数据包进行转发处理，即UPF根据转发规则确定与数据包的以太帧结构信息相匹配的转发路径，并将数据包转发到该转发路径上，从而实现针对性地数据包转发。
UPF可根据转发规则对满足过滤规则的数据包进行转发处理，即步骤S304’在步骤S304之后执行，可实现根据以太帧结构进行针对性地转发。
该示例中，可在针对性过滤的基础上，实现针对性数据包转发。
请参见图4，为本申请实施例二提供的通信方法的流程示意图，该方法可以包括但不限于如下步骤：
步骤S401，SMF获取以太会话初始可用的以太帧结构信息。
SMF可通过以上四种方式来获取以太会话初始可用的以太帧结构信息，即以太会话初始可用的以太帧结构信息可包括上述方式一中的以太会话可用的第一以太帧结构信息、上述方式二中的以太会话可用的第二以太帧结构信息、上述方式三中的以太会话可用的第三以太帧结构信息和上述方式四中的终端可用的以太帧结构信息中的至少一种。
在图4所示的实施例中，采用以太会话初始可用的以太帧结构信息来描述SMF最初获取的以太帧结构信息，即未经PCF动态调整的以太帧结构信息。SMF除通过上述四种方式来获取以太会话初始可用的以太帧结构信息外，还可通过接收来自终端的以太过滤器获取以太会话初始可用的以太帧结构信息，该以太过滤器封装有终端可用的以太帧结构信息。SMF还可通过其他方式获取以太会话初始可用的以太帧结构信息。在图4所示的实施例中，采用以太会话可用的以太帧结构信息来描述经PCF动态调整的以太帧结构信息。
需要说明的是，在图3所示的实施例中，将通过上述四种方式获取的以太帧结构信息称为以太会话可用的以太帧结构信息，而图4所示的实施例中，将通过上述四种方式获取的以太帧信息称为以太会话初始可用的以太帧结构信息，只是名称有所不同。
步骤S402，SMF向PCF发送以太会话初始可用的以太帧结构信息。相应地，PCF从SMF接收以太会话初始可用的以太帧结构信息。
在一个示例中，SMF可通过Npcf_SMPolicyControl_Get向PCF发送以太会话初始可用的以太帧结构信息，即以太会话初始可用的以太帧结构信息可携带在Npcf_SMPolicyControl_Get中。Npcf_SMPolicyControl_Get还可以包括配置文件索引(profile index)，配置文件索引可用于PCF确定策略信息。
可以理解的是，本申请实施例中的策略信息是以太帧结构信息的调整策略，用于PCF调整以太会话初始可用的以太帧结构信息。策略信息可包括本地配置的以太帧结构信息，或包括应用允许的以太帧结构信息。
其中，本地配置的以太帧结构信息，可以是5G系统支持的以太帧结构信息，也可以是 5G系统默认选择的以太帧结构信息，还可以是数据网络在PCF上配置的以太帧结构信息。可以理解的是，数据网络在PCF上配置的以太帧结构信息，为终端与数据网络之间通信时，终端可以使用的以太帧结构信息。应用允许的以太帧结构信息，可以是AF在PCF上配置的允许终端使用的以太帧结构信息。
步骤S403，PCF调整以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息。以太会话可用的以太帧结构信息包括调整后的以太会话初始可用的以太帧结构信息。
在一个示例中，PCF可根据确定的策略信息调整以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息。以太会话可用的以太帧结构信息包括调整后的以太会话初始可用的以太帧结构信息。例如，策略信息包括应用允许的以太帧结构信息，应用允许的以太帧结构信息包括type1、type 2、type 3、VLAN tag 1、VLAN tag 2和VLAN tag 3，以太会话初始可用的以太帧结构信息为以太会话可用的第二以太帧结构信息，以太会话可用的第二以太帧结构信息包括type1、type 4、VLAN tag 1和VLAN tag 4，那么PCF从以太会话可用的第二以太帧结构信息中删除除应用允许的以太帧结构信息之外的以太帧结构信息，即删除type4和VLAN tag4，得到以太会话可用的以太帧结构信息，即以太会话可用的以太帧结构信息包括type1和VLAN tag 1。可用理解的是，以太会话可用的以太帧结构信息与策略信息所包括的以太帧结构信息相匹配。换言之，步骤S403中的调整指的是从以太会话初始可用的以太帧结构信息中删除策略信息不包括以太帧结构信息。
PCF根据配置文件索引确定策略信息，该配置文件索引是由SMF发送至PCF，而SMF从DN-AAA接收该配置文件索引。可以理解的是，在传输配置文件索引的过程中，SMF相当于DN-AAA与PCF之间的中转站，传输配置文件索引而不是传输配置文件，可节省资源和负载。PCF与DN-AAA可预先签订一份协议或合同，该协议或合同包括多个配置文件中每个配置文件对应的策略。可以理解的是，PCF与DN-AAA能够获知每个配置文件对应的策略。配置文件索引用于标识配置文件，PCF在获知配置文件索引的情况下，可查找该配置文件索引对应的策略，应用在本申请实施例中，PCF可根据配置文件索引查找到以太帧结构信息的调整策略，即策略信息。
步骤S404，PCF向SMF发送以太会话可用的以太帧结构信息。
PCF在得到以太会话可用的以太帧结构信息之后，向SMF发送以太会话可用的以太帧结构信息。PCF可通过策略与计费控制(policy and charging control，PCC)规则向SMF发送以太会话可用的以太帧结构信息，即以太会话可用的以太帧结构信息携带在PCC规则中。
步骤S405，SMF根据以太会话可用的以太帧结构信息生成过滤规则，该过滤规则包括以太会话可用的以太帧结构信息。
步骤S406，SMF向UPF发送过滤规则。相应地，UPF接收来自SMF的过滤规则。
步骤S407，UPF根据以太会话可用的以太帧结构信息对数据包进行过滤处理。
步骤S405-步骤S407的具体实现过程可参见图3所示实施例中的步骤S302-步骤S304的具体描述，在此不再赘述。
图4所示实施例与图3所示实施例的区别在于，图4所示实施例中，SMF在通过上述四种方式获取到以太会话初始可用的以太帧结构信息的情况下，将其发送至PCF，由PCF进行调整，SMF根据调整后的以太会话初始可用的以太帧结构信息生成过滤规则，使得过滤规则 贴合5G系统需求或应用需求。
在一个示例中，步骤S403之后，还包括：
步骤S403’，PCF根据以太会话可用的以太帧结构信息生成以太会话可用的以太过滤器。
PCF将以太会话可用的以太帧结构信息封装在以太过滤器中，得到以太会话可用的以太过滤器。由于以太会话可用的以太帧结构信息是根据策略信息调整后的，因此，PCF根据以太会话可用的以太帧结构信息生成的以太会话可用的以太过滤器，贴合5G系统需求或应用需求。
步骤S404’，PCF向SMF发送以太会话可用的以太过滤器。
PCF可将以太会话可用的以太过滤器可与以太会话可用的以太帧结构信息同时发送至SMF，即步骤S04与步骤S404’可同时执行。以太会话可用的以太过滤器可与以太会话可用的以太帧结构信息可同时携带在PCC规则中。
步骤S405’，SMF根据以太会话可用的以太帧结构信息生成转发规则。
需要说明的是，步骤S405’可与步骤S405同时执行，也可先执行步骤S405，再执行步骤S405’。
步骤S406’，SMF向UPF发送转发规则。相应地，UPF接收来自SMF的转发规则。
需要说明的是，步骤S406’可与步骤S406同时执行，即SMF可通过N4消息同时向UPF发送过滤规则和转发规则。
步骤S407’，UPF根据转发规则对数据包进行转发处理。
步骤S405’-步骤S407’的具体实现过程可参见步骤S302’-步骤S304’的具体描述，在此不再赘述。
该示例中，可在针对性过滤的基础上，实现针对性数据包转发。
请参见图5，为本申请实施例三提供的通信方法的流程示意图，该方法可以包括但不限于如下步骤：
步骤S501，SMF向DN-AAA发送认证授权请求。相应地，PCF接收来自DN-AAA的认证授权请求。
步骤S502，PCF向DN-AAA发送认证授权响应，该认证授权响应包括配置文件索引和可用的MAC地址列表。相应地，SMF接收来自PCF的认证授权响应。
其中，可用的MAC地址列表为以太会话可用的MAC地址列表。
步骤S503，SMF向PCF发送配置文件索引和可用的MAC地址列表。相应地，PCF接收来自SMF的配置文件索引和可用的MAC地址列表。
SMF可通过Npcf_SMPolicyControl_Get向PCF发送配置文件索引和可用的MAC地址列表，即配置文件索引和可用的MAC地址列表携带在Npcf_SMPolicyControl_Get中。
步骤S504，PCF根据配置文件索引和可用的MAC地址列表生成事件触发器。
PCF在接收到配置文件索引和可用的MAC地址列表的情况下，根据配置文件索引确定策略信息，根据可用的MAC地址列表确定每个MAC地址对应的以太帧结构信息，即确定出多个以太帧结构信息。然后PCF根据策略信息和多个以太帧结构信息确定终端的MAC地址可用的以太帧结构信息，即确定终端可用的以太帧结构信息。换言之，PCF根据策略信息从多个以太帧结构信息中筛选出与策略信息相匹配的以太帧结构信息，并将其确定为终端可用的以太 帧结构信息，即从多个可用的以太帧结构信息中删除与策略信息不匹配的以太帧结构信息。
PCF在确定终端可用的以太帧结构信息之后，生成事件触发器(event trigger)，该事件触发器包括可用的MAC地址列表中的MAC地址或终端可用的以太帧结构信息。
步骤S505，PCF向SMF发送事件触发器。相应地，SMF接收来自PCF的事件触发器。
PCF可通过Nsmf_EventExposure_Subscribe向SMF发送事件触发器，即事件触发器携带在Nsmf_EventExposure_Subscribe中，也即可用的MAC地址列表中的MAC地址或终端可用的以太帧结构信息携带在Nsmf_EventExposure_Subscribe中。
步骤S506，SMF向UPF发送事件触发器。相应地，UPF接收来自SMF的事件触发器。
SMF可通过N4消息向UPF发送事件触发器，即事件触发器携带在N4消息中。UPF在接收到事件触发器的情况下，可向SMF反馈N4消息，所反馈的N4消息用于指示UPF接收到事件触发器。
SMF在接收到UPF反馈的N4消息的情况下，可通过AMF向终端发送以太会话建立响应，该以太会话建立响应用于告知终端以太会话建立完成，终端可发送上行数据或接收下行数据。
步骤S507，UPF检测数据包的以太帧结构信息是否满足事件触发器。
UPF在接收到数据包的情况下，检测数据包的以太帧结构信息是否满足事件触发器，即判断数据包的以太帧结构信息与事件触发器所包括的终端可用的以太帧结构信息是否匹配。
在一个示例中，UPF在接收到数据包的情况下，可判断数据包的MAC地址与事件触发器所包括的终端的MAC地址是否匹配。
步骤S508，UPF在数据包的以太帧结构信息满足事件触发器的情况下，向SMF发送事件报告。相应地，SMF接收来自UPF的事件报告。该事件报告包括终端可用的以太帧结构信息。
在一个示例中，该事件报告还可以包括终端的MAC地址。终端的MAC地址即为发起以太会话建立请求的终端的MAC地址，终端可用的以太帧结构信息即为发起以太会话建立请求的终端可用的以太帧结构信息。
步骤S509，SMF向PCF发送以太会话初始可用的以太帧结构信息。相应地，PCF接收来自SMF的以太会话初始可用的以太帧结构信息。
其中，以太会话初始可用的以太帧结构信息即为从事件报告中获取的终端可用的以太帧结构信息。
步骤S510，PCF调整以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息。
其中，以太会话可用的以太帧结构信息包括调整后的以太会话初始可用的以太帧结构信息，即调整后的终端可用的以太帧结构信息。PCF可根据策略信息调整以太会话初始可用的以太帧结构信息。
在以太会话初始可用的以太帧结构信息不包括VLAN tag的情况下，PCF可将该以太会话初始可用的以太帧结构信息对应的VLAN tag添加在以太帧结构信息中，得到以太会话可用的以太帧结构信息，这样以太会话可用的以太帧结构信息便包括以太协议类型和VLAN tag。换言之，步骤S510中的调整指的是添加VLAN tag。
步骤S511，PCF向SMF发送以太会话可用的以太帧结构信息。相应地，SMF接收来自PCF的以太会话可用的以太帧结构信息。
步骤S509-步骤S511为可选步骤，即PCF可动态调整以太会话初始可用的以太帧结构信 息，也可不调整以太会话初始可用的以太帧结构信息。
步骤S512，SMF根据以太会话可用的以太帧结构信息生成过滤规则。
在PCF动态调整的情况下，SMF根据以太会话可用的以太帧结构信息生成过滤规则；在PCF不动态调整的情况下，SMF根据以太会话初始可用的以太帧结构信息生成过滤规则。
步骤S513，SMF向UPF发送过滤规则。相应地，UPF接收来自SMF的过滤规则。
步骤S514，UPF根据以太会话可用的以太帧结构信息对数据包进行过滤处理。
步骤S513和步骤S514的具体实现过程可参见图3所示实施例中的步骤S303和步骤S304的具体描述，在此不再赘述。
图5所示的实施例，SMF从UPF获取终端可用的以太帧结构信息，可根据终端可用的以太帧结构信息生成过滤规则，也可根据调整后的终端可用的以太帧结构信息生成过滤规则，使得UPF可将与终端可用的以太帧结构信息不匹配的数据包丢弃。
在图5所示实施例中的基础上，也可增加SMF生成转发规则的相关过程，在实现针对性过滤的基础上，实现针对性数据包转发。
请参见图6，为本申请实施例四提供的通信方法的流程示意图，该方法可以包括但不限于如下步骤：
步骤S601，SMF向DN-AAA发送认证授权请求。相应地，PCF接收来自DN-AAA的认证授权请求。
步骤S602，PCF向DN-AAA发送认证授权响应，该认证授权响应包括配置文件索引和可用的MAC地址列表。相应地，SMF接收来自DN-AAA的认证授权响应。
步骤S603，SMF向PCF发送配置文件索引和可用的MAC地址列表。相应地，PCF接收来自SMF的配置文件索引和可用的MAC地址列表。
步骤S601-步骤S603的具体实现过程可参见图5所示实施例中的步骤S501-步骤S503的具体描述，在此不再赘述。
步骤S604，PCF根据配置文件索引和可用的MAC地址列表生成终端路由选择策略(user equipment route selection policy，URSP)。
PCF在接收到配置文件索引和可用的MAC地址列表的情况下，根据配置文件索引确定策略信息，根据可用的MAC地址列表确定每个MAC地址对应的以太帧结构信息，即确定出多个以太帧结构信息。然后PCF根据策略信息和多个以太帧结构信息确定终端的MAC地址可用的以太帧结构信息，即确定终端可用的以太帧结构信息。换言之，PCF根据策略信息从多个可用的以太帧结构信息中筛选出与策略信息相匹配的以太帧结构信息，并将其确定为终端可用的以太帧结构信息，即从多个可用的以太帧结构信息中删除与策略信息不匹配的以太帧结构信息。
PCF在确定终端可用的以太帧结构信息之后，生成URSP。
其中，URSP包括非IP描述符(non-IP descriptor)和路由选择策略。非IP描述符用于指示终端可用的以太帧结构信息，还可以指示终端的MAC地址。路由选择策略用于触发终端发起以太会话修改请求。换言之，URSP用于触发终端发起以太会话修改请求，还可以携带终端可用的以太帧结构信息。
步骤S605，PCF向终端发送URSP。相应地，终端接收来自PCF的URSP。
PCF可通过AMF向终端发送URSP，即PCF向AMF发送携带URSP的消息，AMF在接收到携带URSP的消息的情况下，向终端发送携带URSP的消息。PCF向AMF发送的携带URSP的消息可以为N1N2传输消息，该N1N2传输消息即用于请求AMF向终端发送携带URSP的非接入层传输(NAS transport)消息，AMF在接收到该N1N2传输消息的情况下，向终端发送的携带URSP的消息可以为非接入层传输消息。
步骤S605之后，SMF可向UPF发送N4消息，该N4消息不携带本申请实施例涉及的以太会话初始可用的以太帧结构信息或以太会话可用的以太帧结构信息。UPF向SMF反馈N4消息，SMF在接收到UPF反馈的N4消息的情况下，通过AMF向终端发送以太会话建立响应。
步骤S606，终端向SMF发送以太会话修改请求。相应地，SMF接收来自终端的以太会话修改请求。
终端在接收到URSP的情况下，检测待发送的数据包的以太帧结构信息与URSP所携带的终端可用的以太帧结构信息是否匹配，并在匹配的情况下，通过AMF向SMF发送以太会话修改请求。该以太会话修改请求用于请求SMF修改以太会话相关的参数信息，例如请求修改QoS flow的参数。
该以太会话修改请求包括以太过滤器，该以太过滤器为终端所支持的以太过滤器。该以太过滤器中封装有终端可用的以太帧结构信息。
步骤S607，SMF向PCF发送以太过滤器。相应地，PCF接收来自SMF的以太过滤器。
步骤S608，PCF根据调整终端可用的以太帧结构信息，得到以太会话可用的以太帧结构信息。
PCF在接收到以太过滤器的情况下，对以太过滤器解封装，以获取终端可用的以太帧结构信息。在获取到终端可用的以太帧结构信息的情况下，调整终端可用的以太帧结构信息，得到以太会话可用的以太帧结构信息。PCF可根据策略信息调整终端可用的以太帧结构信息。
其中，以太会话可用的以太帧结构信息包括调整后的终端可用的以太帧结构信息。
在终端可用的以太帧结构信息不包括VLAN tag的情况下，PCF可将该终端可用的以太帧结构信息对应的VLAN tag添加在以太帧结构信息中，得到以太会话可用的以太帧结构信息，这样以太会话可用的以太帧结构信息便包括以太协议类型和VLAN tag。换言之，步骤S608中的调整指的是添加VLAN tag。
步骤S609，PCF向SMF发送以太会话可用的以太帧结构信息。相应地，SMF接收来自PCF的以太会话可用的以太帧结构信息。
步骤S607-步骤S609为可选步骤，即PCF可动态调整终端可用的以太帧结构信息，也可不调整终端可用的以太帧结构信息。
步骤S610，SMF根据以太会话可用的以太帧结构信息生成过滤规则。
步骤S611，SMF向UPF发送过滤规则。相应地，UPF接收来自SMF的过滤规则。
SMF在向UPF发送过滤规则之后，可向终端发送以太会话修改命令，以便终端修改以太会话。
步骤S612，UPF根据以太会话可用的以太帧结构信息对数据包进行过滤处理。
图6所示的实施例，SMF从终端发送的以太过滤器获取终端可用的以太帧结构信息，可根据终端可用的以太帧结构信息生成过滤规则，也可根据调整后的终端可用的以太帧结构信息生成过滤规则，使得UPF可将与终端可用的以太帧结构信息不匹配的数据包丢弃。
在图6所示实施例中的基础上，也可增加SMF生成转发规则的相关过程，在实现针对性过滤的基础上，实现针对性数据包转发。
上述详细阐述了本申请实施例的方法，下面提供了本申请实施例的装置。
请参见图7，是本申请实施例提供的通信装置的逻辑结构示意图，该通信装置70可以包括收发单元701和处理单元702。该通信装置70可以是会话管理网元101(例如SMF)，也可以是策略控制网元103(例如PCF)。该通信装置70还可以是用户面功能网元102(例如UPF)。该通信装置70还可以是集成会话管理网元101和用户面功能网元102的装置，还可以是集成会话管理网元101、策略控制网元103和用户面功能网元102的装置，还可以是集成会话管理网元101、策略控制网元103、用户面功能网元102和其它网元的装置，其它网元可以是接入管理网元等。
在一种可能的实现方式中，若通信装置70为会话管理网元101，则收发单元701用于执行图3所示实施例中的步骤S301和步骤S303，处理单元702用于执行图3所示实施例中的步骤S302。收发单元701还用于执行图3所示实施例中的步骤S301’、步骤S303’，图4所示实施例中的步骤S401、步骤S402、步骤S404、步骤S404’、步骤S406和步骤S406’，图5所示实施例中的步骤S501、步骤S502、步骤S503、步骤S505、步骤S506、步骤S508、步骤S509、步骤S511和步骤S513，图6所示实施例中的步骤S601、步骤S602、步骤S603、步骤S606、步骤S607、步骤S609和步骤S611。处理单元702还用于执行图3所示实施例中的步骤S302’，图4所示实施例中的步骤S405和步骤S405’，图5所示实施例中的步骤S512，图6所示实施例中的步骤S610。
在一种可能的实现方式中，若通信装置70为用户面功能网元102，则收发单元701用于执行图3所示实施例中的步骤S303，图4所示实施例中的步骤S406，图5所示实施例中的步骤S513，图6所示实施例中的步骤S611；处理单元702用于执行图3所示实施例中的步骤S304，图4所示实施例中的步骤S407，图5所示实施例中的步骤S514，图6所示实施例中的步骤S612。收发单元701还用于执行图3所示实施例中的步骤S303’，图4所示实施例中的步骤S406’，图5所示实施例中的步骤S506和步骤S508。处理单元702还用于执行图3所示实施例中的步骤S406’，图4所示实施例中的步骤S407’，图5所示实施例中的步骤S507。
在一种可能的实现方式中，若通信装置70为策略控制网元103，则收发单元701用于执行图4所示实施例中的步骤S402和步骤S404，处理单元702用于执行图4所示实施例中的步骤S403。收发单元701还用于执行图4所示实施例中的步骤S404’，图5所示实施例中的步骤S503、S505、S509和S511，图6所示实施例中的步骤S603、S605、S607和S609。处理单元702还用于执行图4所示实施例中的步骤S403’，图5所示实施例中的步骤S504和步骤S510，图6所示实施例中的步骤S604和步骤S608。
请参见图8，是本申请实施例提供的通信装置的实体结构简化示意图，该通信装置80包括收发器801、处理器802和存储器803。收发器801、处理器802和存储器803可以通过总线804相互连接，也可以通过其它方式相连接。该通信装置80可以是会话管理网元101(例如SMF)，也可以是策略控制网元103(例如PCF)。该通信装置80还可以是用户面功能网元102(例如UPF)。该通信装置80还可以是集成会话管理网元101和用户面功能网元102的装置，还可以是集成会话管理网元101、策略控制网元103和用户面功能网元102的装置， 还可以是集成会话管理网元101、策略控制网元103、用户面功能网元102和其它网元的装置，其它网元可以是接入管理网元等。
图7所示的收发单元701所实现的相关功能可以通过收发器801来实现。图7所示的处理单元702所实现的相关功能可以通过处理器802来实现。
存储器803包括但不限于是随机存储记忆体(random access memory，RAM)、只读存储器(read-only memory，ROM)、可擦除可编程只读存储器(erasable programmable read only memory，EPROM)、或便携式只读存储器(compact disc read-only memory，CD-ROM)，该存储器803用于相关指令及数据。
收发器801用于发送数据和/或信令，以及接收数据和/或信令。
在一种可能的实现方式中，若通信装置80为会话管理网元101，则收发器801用于执行图3所示实施例中的步骤S301和步骤S303，还用于执行图3所示实施例中的步骤S301’、步骤S303’，图4所示实施例中的步骤S401、步骤S402、步骤S404、步骤S404’、步骤S406和步骤S406’，图5所示实施例中的步骤S501、步骤S502、步骤S503、步骤S505、步骤S506、步骤S508、步骤S509、步骤S511和步骤S513，图6所示实施例中的步骤S601、步骤S602、步骤S603、步骤S606、步骤S607、步骤S609和步骤S611。
在一种可能的实现方式中，若通信装置80为用户面功能网元102，则收发器801用于执行图3所示实施例中的步骤S303，图4所示实施例中的步骤S406，图5所示实施例中的步骤S513，图6所示实施例中的步骤S611。收发器801还用于执行还用于执行图3所示实施例中的步骤S303’，图4所示实施例中的步骤S406’，图5所示实施例中的步骤S506和步骤S508。
在一种可能的实现方式中，若通信装置80为策略控制网元103，则收发器801用于执行图4所示实施例中的步骤S402和步骤S404，还用于执行图4所示实施例中的步骤S404’，图5所示实施例中的步骤S503、S505、S509和S511，图6所示实施例中的步骤S603、S605、S607和S609。
处理器802可以包括是一个或多个处理器，例如包括一个或多个中央处理器(central processing unit，CPU)，在处理器802是一个CPU的情况下，该CPU可以是单核CPU，也可以是多核CPU。
在一种可能的实现方式中，若通信装置80为会话管理网元101，则处理器802用于执行图3所示实施例中的步骤S302，还用于执行图3所示实施例中的步骤S302’，图4所示实施例中的步骤S405和步骤S405’，图5所示实施例中的步骤S512，图6所示实施例中的步骤S610。
在一种可能的实现方式中，若通信装置80为用户面功能网元102，则处理器802用于执行图3所示实施例中的步骤S304，图4所示实施例中的步骤S407，图5所示实施例中的步骤S514，图6所示实施例中的步骤S612。处理器802还用于执行图3所示实施例中的步骤S406’，图4所示实施例中的步骤S407’，图5所示实施例中的步骤S507。
在一种可能的实现方式中，若通信装置80为策略控制网元103，则处理器802用于执行图4所示实施例中的步骤S403，还用于执行图4所示实施例中的步骤S403’，图5所示实施例中的步骤S504和步骤S510，图6所示实施例中的步骤S604和步骤S608。
存储器803用于存储通信装置80的程序代码和数据。
可以理解的是，图8仅仅示出了第一通信装置的简化设计。在实际应用中，第一通信装置还可以分别包含必要的其他元件，包含但不限于任意数量的收发器、处理器、控制器、存储器、通信单元等，而所有可以实现本申请的装置都在本申请的保护范围之内。
本申请实施例还提供了一种通信系统，包括会话管理网元(SMF)和策略控制网元(PCF)，还包括用户面功能网元(UPF)、接入管理网元(AMF)、认证授权网元(DN-AAA)、数据管理网元(UDM)和终端。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，该流程可以由计算机程序来指令相关的硬件完成，该程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法实施例的流程。而前述的存储介质包括：ROM或随机存储记忆体RAM、磁碟或者光盘等各种可存储程序代码的介质。因此，本申请又一实施例提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
本申请又一实施例还提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
本领域普通技术人员可以意识到，结合本申请中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line， DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。

Claims (40)

  1. 一种通信方法，其特征在于，包括：
    会话管理网元获取以太会话可用的以太帧结构信息；
    所述会话管理网元根据所述以太会话可用的以太帧结构信息生成过滤规则，所述过滤规则包括所述以太会话可用的以太帧结构信息；
    所述会话管理网元向用户面功能网元发送所述过滤规则。
  2. 根据权利要求1所述的方法，其特征在于，所述以太帧结构信息包括以太协议类型和虚拟局域网VLAN标签中的至少一种。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述会话管理网元根据所述以太会话可用的以太帧结构信息生成转发规则；
    所述会话管理网元向所述用户面功能网元发送所述转发规则。
  4. 根据权利要求3所述的方法，其特征在于，所述转发规则包括以太会话可用的路径转发信息和所述以太会话可用的以太帧结构信息，或包括以太会话可用的路径转发信息和所述以太会话可用的以太过滤器，或包括以太会话可用的路径转发信息、以太会话可用的以太过滤器和所述以太会话可用的以太帧结构信息。
  5. 根据权利要求4所述的方法，其特征在于，所述以太会话可用的路径转发信息包括所述用户面功能网元与另一个用户面功能网元之间的转发路径信息、所述用户面功能网元与接入网之间的转发路径信息和所述用户面功能网元与数据网络之间的转发路径信息中的至少一种。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述会话管理网元获取以太会话可用的以太帧结构信息，包括：
    所述会话管理网元向策略控制网元发送以太会话初始可用的以太帧结构信息；
    所述会话管理网元接收来自所述策略控制网元的以太会话可用的以太帧结构信息，所述以太会话可用的以太帧结构信息包括调整后的所述以太会话初始可用的以太帧结构信息。
  7. 根据权利要求6所述的方法，其特征在于，所述以太会话初始可用的以太帧结构信息包括以太会话建立请求携带的以太会话可用的第一以太帧结构信息、数据管理网元的签约信息携带的以太会话可用的第二以太帧结构信息、认证授权网元的认证授权响应携带的以太会话可用的第三以太帧结构信息和所述用户面功能网元的事件报告携带的以太会话可用的第四以太帧结构信息中的至少一种。
  8. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    所述会话管理网元接收以太会话修改请求，所述以太会话修改请求中包括以太过滤器，所述以太过滤器包括以太会话初始可用的以太帧结构信息；
    所述会话管理网元向策略控制网元发送以太会话初始可用的以太帧结构信息，包括：
    所述会话管理网元向所述策略控制网元发送所述以太过滤器，所述以太过滤器包括所述以太会话初始可用的以太帧结构信息。
  9. 根据权利要求1-5任一项所述的方法，其特征在于，所述会话管理网元获取以太会话可用的以太帧结构信息，包括：
    所述会话管理网元接收以太会话建立请求，所述以太会话建立请求中包括以太会话可用的第一以太帧结构信息；
    或，所述会话管理网元接收来自数据管理网元的签约信息，所述签约信息中包括以太会话可用的第二以太帧结构信息；
    或，所述会话管理网元接收来自认证授权网元的认证授权响应，所述认证授权响应中包括以太会话可用的第三以太帧结构信息；
    或，所述会话管理网元接收来自所述用户面功能网元的事件报告，所述事件报告中包括以太会话可用的第四以太帧结构信息。
  10. 根据权利要求9所述的方法，其特征在于，所述以太会话可用的以太帧结构信息包括所述用户面功能网元的事件报告携带的以太会话可用的第四以太帧结构信息；
    所述方法还包括：
    所述会话管理网元接收来自所述认证授权网元的认证授权响应，所述认证授权响应中包括可用的媒体接入控制MAC地址列表和配置文件索引；
    所述会话管理网元向所述策略控制网元发送所述可用的MAC地址列表和所述配置文件索引；
    所述会话管理网元接收来自所述策略控制网元的事件触发器，所述事件触发器包括所述可用的MAC地址列表中的MAC地址或终端可用的以太帧结构信息；
    所述会话管理网元向用户面功能网元发送所述事件触发器。
  11. 一种通信方法，其特征在于，包括：
    策略控制网元接收来自会话管理网元的以太会话初始可用的以太帧结构信息；
    所述策略控制网元调整所述以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，所述以太会话可用的以太帧结构信息包括调整后的所述以太会话初始可用的以太帧结构信息；
    所述策略控制网元向所述会话管理网元发送所述以太会话可用的以太帧结构信息。
  12. 根据权利要求11所述的方法，其特征在于，所述以太帧结构信息包括以太协议类型和VLAN标签中的至少一种。
  13. 根据权利要求11或12所述的方法，其特征在于，所述方法还包括：
    所述策略控制网元根据所述以太会话可用的以太帧结构信息生成以太会话可用的以太过滤器；
    所述策略控制网元向所述会话管理网元发送所述以太会话可用的以太过滤器。
  14. 根据权利要求11-13任一项所述的方法，其特征在于，所述策略控制网元调整所述以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，包括：
    所述策略控制网元根据策略信息调整所述以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，所述策略信息包括本地配置或应用允许的以太帧结构信息。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述策略控制网元接收来自所述会话管理网元的配置文件索引；
    所述策略控制网元根据所述配置文件索引确定所述策略信息。
  16. 根据权利要求11-13任一项所述的方法，其特征在于，所述方法还包括：
    所述策略控制网元接收来自所述会话管理网元的可用的MAC地址列表和配置文件索引；
    所述策略控制网元根据所述配置文件索引和所述可用的MAC地址列表生成事件触发器，所述事件触发器包括所述可用的MAC地址列表MAC地址或终端可用的以太帧结构信息；
    所述策略控制网元向所述会话管理网元发送所述事件触发器。
  17. 根据权利要求11-13任一项所述的方法，其特征在于，所述方法还包括：
    所述策略控制网元接收来自所述会话管理网元的可用的MAC地址列表和配置文件索引；
    所述策略控制网元根据所述配置文件索引和所述可用的MAC地址列表生成终端路由选择策略URSP，所述URSP用于触发终端修改以太会话；
    所述策略控制网元向所述终端发送所述URSP。
  18. 一种会话管理网元，其特征在于，包括收发单元和处理单元，
    所述收发单元，用于获取以太会话可用的以太帧结构信息；
    所述处理单元，用于根据所述以太会话可用的以太帧结构信息生成过滤规则，所述过滤规则包括所述以太会话可用的以太帧结构信息；
    所述收发单元，还用于向用户面功能网元发送所述过滤规则。
  19. 根据权利要求18所述的会话管理网元，其特征在于，所述以太帧结构信息包括以太协议类型和虚拟局域网VLAN标签中的至少一种。
  20. 根据权利要求18或19所述的会话管理网元，其特征在于，
    所述处理单元，还用于根据所述以太会话可用的以太帧结构信息生成转发规则；
    所述收发单元，还用于向所述用户面功能网元发送所述转发规则。
  21. 根据权利要求20所述的会话管理网元，其特征在于，所述转发规则包括以太会话可用的路径转发信息和所述以太会话可用的以太帧结构信息，或包括以太会话可用的路径转发信息和所述以太会话可用的以太过滤器，或包括以太会话可用的路径转发信息、以太会话可用的以太过滤器和所述以太会话可用的以太帧结构信息。
  22. 根据权利要求21所述的会话管理网元，其特征在于，所述以太会话可用的路径转发信息包括所述用户面功能网元与另一个用户面功能网元之间的转发路径信息、所述用户面功能网元与接入网之间的转发路径信息和所述用户面功能网元与数据网络之间的转发路径信息中的至少一种。
  23. 根据权利要求18-22任一项所述的会话管理网元，其特征在于，所述收发单元用于获取以太会话可用的以太帧结构信息，具体用于向策略控制网元发送以太会话初始可用的以太帧结构信息；接收来自所述策略控制网元的以太会话可用的以太帧结构信息，所述以太会话可用的以太帧结构信息包括调整后的所述以太会话初始可用的以太帧结构信息。
  24. 根据权利要求23所述的会话管理网元，其特征在于，以太会话初始可用的以太帧结构信息包括以太会话建立请求携带的以太会话可用的第一以太帧结构信息、数据管理网元的签约信息携带的以太会话可用的第二以太帧结构信息、认证授权网元的认证授权响应携带的以太会话可用的第三以太帧结构信息和所述用户面功能网元的事件报告携带的以太会话可用的第四以太帧结构信息中的至少一种。
  25. 根据权利要求23所述的会话管理网元，其特征在于，
    所述收发单元，还用于接收以太会话修改请求，所述以太会话修改请求中包括以太过滤器，所述以太过滤器包括以太会话初始可用的以太帧结构信息；
    所述收发单元用于向策略控制网元发送以太会话初始可用的以太帧结构信息，具体用于向所述策略控制网元发送所述以太过滤器，所述以太过滤器包括所述以太会话初始可用的以太帧结构信息。
  26. 根据权利要求18-22任一项所述的会话管理网元，其特征在于，
    所述收发单元用于获取以太会话可用的以太帧结构信息，具体用于接收以太会话建立请 求，所述以太会话建立请求中包括以太会话可用的第一以太帧结构信息；或，接收来自数据管理网元的签约信息，所述签约信息中包括以太会话可用的第二以太帧结构信息；或，接收来自认证授权网元的认证授权响应，所述认证授权响应中包括以太会话可用的第三以太帧结构信息；或，接收来自所述用户面功能网元的事件报告，所述事件报告中包括以太会话可用的第四以太帧结构信息。
  27. 根据权利要求26所述的会话管理网元，其特征在于，所述以太会话可用的以太帧结构信息包括所述用户面功能网元的事件报告携带的以太会话可用的第四以太帧结构信息；
    所述收发单元，还用于接收来自所述认证授权网元的认证授权响应，所述认证授权响应中包括可用的媒体接入控制MAC地址列表和配置文件索引；
    所述收发单元，还用于向所述策略控制网元发送所述可用的MAC地址列表和所述配置文件索引；
    所述收发单元，还用于接收来自所述策略控制网元的事件触发器，所述事件触发器包括所述可用的MAC地址列表中的MAC地址或终端可用的以太帧结构信息；
    所述收发单元，还用于向用户面功能网元发送所述事件触发器。
  28. 一种策略控制网元，其特征在于，包括：收发单元和处理单元，
    所述收发单元，用于接收来自会话管理网元的以太会话初始可用的以太帧结构信息；
    所述处理单元，用于调整所述以太会话初始可用的以太帧结构信息，得到以太会话可用的以太帧结构信息，所述以太会话可用的以太帧结构信息包括调整后的所述以太会话初始可用的以太帧结构信息；
    所述收发单元，还用于向所述会话管理网元发送所述以太会话可用的以太帧结构信息。
  29. 根据权利要求28所述的策略控制网元，其特征在于，所述以太帧结构信息包括以太协议类型和VLAN标签中的至少一种。
  30. 根据权利要求28或29所述的策略控制网元，其特征在于，所述策略控制网元还包括：
    所述策略控制网元根据所述以太会话可用的以太帧结构信息生成以太会话可用的以太过滤器；
    所述策略控制网元向所述会话管理网元发送所述以太会话可用的以太过滤器。
  31. 根据权利要求28-30任一项所述的策略控制网元，其特征在于，
    所述收发单元，还用于接收来自所述会话管理网元的可用的MAC地址列表和配置文件索引；
    所述处理单元，还用于根据所述配置文件索引和所述可用的MAC地址列表生成事件触发器，所述事件触发器包括终端的MAC地址或终端可用的以太帧结构信息；
    所述收发单元，还用于向所述会话管理网元发送所述事件触发器。
  32. 根据权利要求28-30任一项所述的策略控制网元，其特征在于，
    所述收发单元，还用于接收来自所述会话管理网元的可用的MAC地址列表和配置文件索引；
    所述处理单元，还用于根据所述配置文件索引和所述可用的MAC地址列表生成终端路由选择策略URSP，所述URSP用于触发终端修改以太会话；
    所述收发单元，还用于向所述终端发送所述URSP。
  33. 一种通信系统，其特征在于，所述通信系统包括会话管理网元和用户面功能网元；
    所述会话管理网元，用于获取以太会话可用的以太帧结构信息；根据所述以太会话可用的以太帧结构信息生成过滤规则，所述过滤规则包括所述以太会话可用的以太帧结构信息；向用户面功能网元发送所述过滤规则；
    所述用户面功能网元，用于接收所述过滤规则。
  34. 根据权利要求33所述的系统，其特征在于，所述系统还包括如权利要求28-32任一项所述的策略控制网元。
  35. 一种会话管理网元，其特征在于，包括：处理器和存储器；所述存储器用于存储计算机执行指令，当所述会话管理网元运行时，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述会话管理网元执行如权利要求1-10任一项所述的通信方法。
  36. 一种策略控制网元，其特征在于，包括：处理器和存储器；所述存储器用于存储计算机执行指令，当所述策略控制网元运行时，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述策略控制网元执行如权利要求11-18任一项所述的通信方法。
  37. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行如权利要求1-10，或11-18任一项所述的通信方法。
  38. 一种计算机程序产品，其特征在于，所述计算机程序产品中存储有指令，当其在计算机上运行时，使得计算机可以执行如权利要求1-10，或11-18任一项所述的通信方法。
  39. 一种用来执行权利要求1-10任一项所述的通信方法的装置。
  40. 一种用来执行权利要求11-18任一项所述的通信方法的装置。
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