WO2021057692A1 - Procédé, dispositif et système de transmission de message de strate de non-accès - Google Patents

Procédé, dispositif et système de transmission de message de strate de non-accès Download PDF

Info

Publication number
WO2021057692A1
WO2021057692A1 PCT/CN2020/116675 CN2020116675W WO2021057692A1 WO 2021057692 A1 WO2021057692 A1 WO 2021057692A1 CN 2020116675 W CN2020116675 W CN 2020116675W WO 2021057692 A1 WO2021057692 A1 WO 2021057692A1
Authority
WO
WIPO (PCT)
Prior art keywords
amf
proxy server
nas message
information
terminal
Prior art date
Application number
PCT/CN2020/116675
Other languages
English (en)
Chinese (zh)
Inventor
黄亚达
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2021057692A1 publication Critical patent/WO2021057692A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/141—Setup of application sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
    • 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
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
    • H04L67/5682—Policies or rules for updating, deleting or replacing the stored data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Definitions

  • This application relates to the field of communications, and more specifically to a method, device and system for non-access stratum message transmission.
  • the 5th generation wireless systems (5G) system provides three major business capabilities: ultra-large bandwidth, ultra-large number of connections, and ultra-short latency.
  • the control plane network element manages the signaling connection and mobility of the terminal equipment, the control plane network element is usually deployed in a relatively high position (for example, the provincial capital city or the prefecture-level city), so as to realize the large area of the terminal equipment.
  • a relatively high position for example, the national capital city or the prefecture-level city
  • control plane data such as non-access stratum (NAS)
  • NAS non-access stratum
  • the present application provides a method, device and system for non-access layer message transmission, which can improve processing efficiency.
  • a system for transmitting NAS messages in a non-access stratum includes an access network device and a proxy server.
  • the access network device is configured to receive a first NAS message from a terminal and send it to the proxy server.
  • the server sends a first NAS message;
  • the proxy server is configured to send a second centralized NAS message to the access management function AMF when the first NAS message includes the first centralized NAS message, and/or, when the first NAS message includes the first centralized NAS message,
  • the second distributed NAS message is sent to the distributed non-access stratum service function NSFd.
  • the proxy server receives the first NAS message from the access network device, and determines whether the first NAS message includes a centralized NAS message or a distributed NAS message. If the first NAS message includes the first centralized NAS message, the proxy server sends a second centralized NAS message to AMF; if the first NAS message includes the first distributed NAS message, the proxy server sends to the NSFd Send the second distributed NAS message. That is to say, compared with the traditional solution, the embodiment of the present application deploys a proxy server and NSFd, and the proxy server can send distributed NAS messages and centralized NAS messages to different processing network elements for processing, that is, NAS messages are split and processed. Thereby improving processing efficiency.
  • the access network equipment switches between different proxy servers, that is, switches over TNLA instead of switching between different AMFs. That is to say, for the terminal and the access network equipment, the N2 and N1 connections have not changed, so the terminal does not need to switch the signaling connection, thereby reducing signaling overhead or service interruption.
  • the NSFd is set at a position where the transmission delay of the distributed NAS message between the NSFd and the access network device is less than or equal to a preset threshold.
  • the transmission of distributed NAS messages in the embodiments of the present application can reduce transmission delay.
  • the second network element in the system is used to send configuration information to the AMF, and the configuration information is used to configure the transport layer network between the access network device and the AMF for the terminal Associated with TNLA, and/or used to configure the TNLA connection between the access network device and the proxy server for the terminal; and/or the second network element is used to send a release request to the AMF, and the release request is used To request the proxy server to release the TNLA connection.
  • the second network element may send configuration information to the AMF to manage the establishment and release of the TNLA connection for the terminal.
  • the second network element is set inside the AMF.
  • NSFc can manage NSFd, for example, create, update or delete NSFd.
  • a method for NAS message transmission includes: a proxy server receives a first non-access stratum NAS message of a terminal from an access network device; the proxy server determines that the first NAS message is a centralized NAS Message, send a second centralized NAS message to the access management function AMF, and/or when the first NAS message is a distributed NAS message, send a second distributed NAS message to the distributed non-access layer service function NSFd .
  • the proxy server receives the first NAS message from the access network device, and determines whether the first NAS message includes a centralized NAS message or a distributed NAS message. If the first NAS message includes the first centralized NAS message, the proxy server sends a second centralized NAS message to AMF; if the first NAS message includes the first distributed NAS message, the proxy server sends to the NSFd Send the second distributed NAS message. That is to say, compared with the traditional solution, the embodiment of the present application deploys a proxy server and NSFd, and the proxy server can send distributed NAS messages and centralized NAS messages to different processing network elements for processing, that is, NAS messages are split and processed. Thereby improving processing efficiency.
  • the method further includes: the proxy server receives first configuration information from the AMF, where the first configuration information is used to configure the transport layer network association between the proxy server and the AMF for the terminal TNLA connection; the proxy server establishes a TNLA connection for the terminal between the proxy server and the AMF according to the first configuration information.
  • the AMF can configure the proxy server with TNLA used to establish a connection between the proxy server and the AMF, so as to realize the communication between the AMF and the proxy server.
  • the method further includes: the proxy server decrypts the first NAS message according to the security parameter.
  • the proxy server NSFd parses the first NAS message according to the security parameters, and can learn the content included in the first NAS message after parsing.
  • the method before the proxy server receives the first NAS message from the access network device, the method further includes: the proxy server sends a request message to the AMF, and the request message is used to request the establishment of the proxy The TNLA connection between the server and the access network device for the terminal.
  • the proxy server can actively send a request message to the AMF. After receiving the request message, the AMF sends the second configuration information, which avoids the need to establish TNLA between the proxy server and the access network device. , Which saves signaling and resource overhead.
  • the method further includes: the proxy server receives a release message from the AMF, the release message is used to release the TNLA connection for the terminal; the proxy server releases the TNLA for the terminal according to the release message connection.
  • the proxy server can release the connection with the access network device, release the connection with the AMF, and release the connection with the NSFd.
  • a method for transmitting a non-access stratum NAS message includes: an access network device receives a first NAS message from a terminal; and the access network device sends the first NAS message to a proxy server to Make the proxy server send the second centralized NAS message to the AMF when the first NAS message includes the first centralized NAS message, and/or send the second centralized NAS message to the NSFd when the first NAS message includes the first distributed NAS message Distributed NAS messages.
  • the access network device receives the first NAS message from the terminal and sends the first NAS message to the proxy server, so that the proxy server determines whether the first NAS message includes a centralized NAS message or a distributed NAS message. If the first NAS message includes the first centralized NAS message, the proxy server sends a second centralized NAS message to AMF; if the first NAS message includes the first distributed NAS message, the proxy server sends to the NSFd Send the second distributed NAS message. That is to say, compared with the traditional solution, the embodiment of the present application deploys a proxy server and NSFd, and the proxy server can send distributed NAS messages and centralized NAS messages to different processing network elements for processing, that is, NAS messages are split and processed. Thereby improving processing efficiency.
  • the method further includes: the access network device receives second configuration information from the AMF, and the second configuration information is used to configure the connection between the access network device and the proxy server for the terminal TNLA connection; the access network device establishes a TNLA connection for the terminal between the access network device and the proxy server according to the second configuration information.
  • the access network device receives the second configuration information, and establishes a TNLA connection with the AMF for the terminal according to the second configuration information, and/or establishes a connection with each of the at least one proxy server for the terminal TNLA connection of the terminal.
  • the access network equipment can switch the TNLA connection, but for the access network equipment and the terminal, the N1 and N2 connections have not changed, that is, there is no need to switch the signaling connection, which avoids unnecessary signaling Overhead.
  • the second configuration information includes the TNLA information of the proxy server and/or the TNLA information of the AMF; wherein, the TNLA information of the proxy server includes the address information of the proxy server and the corresponding information of the proxy server.
  • the identification information of the distributed core network, the slice information that the proxy server can use, the information of the geographic area to which the proxy server belongs, the list information of the tracking area to which the proxy server belongs, and the NSFd supported by the distributed core network corresponding to the proxy server At least one of the type and the capacity supported by the distributed core network corresponding to the proxy server;
  • the TNLA information of the AMF includes the address information of the AMF, the identification information of the distributed core network corresponding to the AMF, and the slices that the AMF can use At least one of information, information of the geographic area to which the AMF belongs, list information of the tracking area to which the AMF belongs, the type of NSFd supported by the distributed core network corresponding to the AMF, and the capacity supported by the distributed core network corresponding to the AMF
  • a method for non-access stratum NAS message transmission includes: AMF acquiring second configuration information, where the second configuration information is used to configure the transmission layer between the access network device and the AMF
  • the network is associated with TNLA, and/or is used to configure a TNLA connection between the access network device and the proxy server for the terminal; the AMF sends the second configuration information to the access network device.
  • the access network device obtains the second configuration information, and sends the second configuration information to the access network device, so that the access network device establishes a TNLA connection with the AMF for the terminal according to the second configuration information, and/or Establish a TNLA connection for the terminal with each of the at least one proxy server.
  • the access network equipment can switch the TNLA connection, but for the access network equipment and the terminal, the N1 and N2 connections have not changed, that is, there is no need to switch the signaling connection, which avoids unnecessary signaling Overhead.
  • acquiring the second configuration information by the AMF includes: the AMF receives the second configuration information from an operation and maintenance OAM network management system; or the AMF receives the second configuration information from the central non-access layer data processing network element NSFc Configuration information.
  • the second configuration information includes the TNLA information of the proxy server and/or the TNLA information of the AMF; wherein, the TNLA information of the proxy server includes the address information of the proxy server and the corresponding information of the proxy server.
  • the identification information of the distributed core network, the slice information that the proxy server can use, the information of the geographic area to which the proxy server belongs, the list information of the tracking area to which the proxy server belongs, and the NSFd supported by the distributed core network corresponding to the proxy server At least one of the type and the capacity supported by the distributed core network corresponding to the proxy server;
  • the TNLA information of the AMF includes the address information of the AMF, the identification information of the distributed core network corresponding to the AMF, and the slices that the AMF can use At least one of information, information about the geographic area to which the AMF belongs, list information of the tracking area to which the AMF belongs, the type of NSFd supported by the distributed core network corresponding to the AMF, and the capacity supported by the distributed core network corresponding to the AMF
  • the method further includes: the AMF sends first configuration information to the proxy server, where the first configuration information is used to configure a TNLA connection between the proxy server and the AMF for the terminal.
  • the AMF can configure the proxy server with TNLA used to establish a connection between the proxy server and the AMF, so as to realize the communication between the AMF and the proxy server.
  • the method further includes: the AMF receives a service request, the service request includes a delay requirement of the service; and the AMF determines the target proxy server from a plurality of proxy servers according to the delay requirement.
  • the communication system may include multiple proxy servers, and the AMF receives the service request, and selects an appropriate proxy server from the multiple proxy servers according to the service type requested by the service request.
  • the service request includes a service type, and when the service type of the service request is a low-latency service, the low-latency can also be classified into levels.
  • AMF can select different proxy servers for service requests with different delay levels, thereby improving the service processing performance of the system.
  • the method further includes: the AMF receives a request message from a proxy server, the request message is used to request the establishment of a transport layer network association TNLA between the proxy server and the access network device for the terminal;
  • the AMF sending the second configuration information to the access network device includes: the AMF sending the second configuration information according to the request message.
  • the proxy server can actively send a request message to the AMF. After receiving the request message, the AMF sends the second configuration information, which avoids the need to establish TNLA between the proxy server and the access network device. , Which saves signaling and resource overhead.
  • the method further includes: the AMF sends a release message to the proxy server, where the release message is used to instruct the proxy server to release the TNLA connection for the terminal.
  • the AMF sends a release message to the proxy server, so that the proxy server can release the connection with the access network device, release the connection with the AMF, and release the connection with the NSFd according to the release message.
  • the method before the AMF sends the release message to the proxy server, the method further includes: the AMF receives a release request from the NSFc, and the release request is used to request the proxy server to release the TNLA connection.
  • AMF will send a release message to the proxy server only when it receives the release request, that is, NSFc can manage and control the TNLA connection with the proxy server.
  • a system for NAS transmission of non-access stratum messages includes an access network device, an access management function AMF, and a first network element.
  • the access network device is used for receiving terminal NAS message, when the NAS message includes the first centralized NAS message, send the second centralized NAS message to the AMF, and/or, when the first NAS message includes the first distributed NAS message, send the second centralized NAS message to the NSFd 2.
  • Distributed NAS messages is used for receiving terminal NAS message, when the NAS message includes the first centralized NAS message, send the second centralized NAS message to the AMF, and/or, when the first NAS message includes the first distributed NAS message, send the second centralized NAS message to the NSFd 2.
  • the access network device can divide the NAS message, that is, the centralized NAS message and the distributed NAS message in the first NAS message are processed separately, and then sent to different network elements for processing, which improves message processing efficiency.
  • the NSFd is set at a position where the transmission delay of the second distributed NAS message with the access network device is less than or equal to a preset threshold.
  • the first network element may be deployed at a location where the distance from the access network device is such that the transmission delay for transmitting the distributed NAS message is less than or equal to the preset threshold. In this way, the access network device sends the distributed NAS message to the first network element for processing, which saves transmission delay.
  • a non-access stratum channel exists between the access network device and the NSFd.
  • connection between the access network device and the AMF may be the same as the connection relationship in the traditional solution, and the non-access stratum channel between the access network device and the first network element may be specially established. That is to say, the communication between the access network device and the NSFd is realized through the existence of a non-access layer channel between the access network device and the NSFd.
  • the second network element in the system, the second network element is used to send configuration information to the AMF or to the access network device, and the configuration information is used to configure the access network device The non-access stratum channel with the NSFd; and/or the second network element sends a release message to the NSFd, and the release request is used to request the NSFd to release the non-access stratum channel with the access network device .
  • the second network element may be used to manage the connection relationship between the first network element and the access network device, thereby improving the flexibility of the connection relationship between the first network element and the access network device.
  • the second network element is set inside the AMF.
  • the second network element may be a module or element inside the AMF, which can be understood as controlling the connection relationship between the first network element and the access network device through the AMF, avoiding adding more network elements and saving power consumption.
  • a method for transmitting a non-access stratum NAS message includes: an access network device receives a NAS message from a terminal, and when the NAS message includes a first centralized NAS message, send a message to the access management function
  • the AMF sends the second centralized NAS message, and/or, when the first NAS message includes the first distributed NAS message, sends the second distributed NAS message to the distributed non-access stratum service function NSFd.
  • the access network device may receive the NAS message from the terminal, and separately process the centralized NAS message and the distributed NAS message in the NAS message. If the NAS message includes the first centralized NAS message, the access network device processes the first centralized NAS message to obtain the second centralized NAS message, and sends the second centralized NAS message to the AMF. If the NAS message includes the first distributed NAS message, the access network device processes the first distributed NAS message to obtain a second distributed NAS message, and sends the second NAS message to the first network element. In other words, the access network device can perform offload processing in the NAS message, thereby improving processing efficiency.
  • the method further includes: the access network device decrypts the NAS message according to the first security parameter, and determines that the NAS message includes the first centralized NAS message; and/or the access network device according to The second security parameter decrypts the NAS message, and determines that the NAS message includes the first distributed NAS message.
  • the first centralized NAS message and the first distributed NAS message in the NAS message can be processed safely by using different security parameters, so that the access network device can parse out the NAS message included in the NAS message through different security parameters. Message, thereby further improving the security performance of NAS message transmission.
  • the method further includes: the access network device receiving first configuration information, where the first configuration information is used to configure a non-access layer between the access network device and the first network element Channel; the access network device establishes a non-access stratum channel between the access network device and the first network element according to the first configuration information.
  • the method further includes: the access network device sends a handover request to the AMF, where the handover request is used to request a handover from the access network device currently accessed by the terminal to the access network device;
  • the access network device receives a handover response from the AMF.
  • the handover response includes configuration information.
  • the configuration information is used to configure the non-access layer channel between the access network device and the third network element;
  • the configuration information establishes a non-access stratum channel between the access network device and the third network element.
  • the second network element determines that the NSFd needs to be replaced according to the handover request sent by the AMF request to switch to the new access network device, then the handover response message sent by the second network element to the AMF includes the configuration information for Configure the non-access layer channel between the new access device and the new NSFd.
  • a method for transmitting a non-access stratum NAS message includes: a distributed non-access stratum service function NSFd receives configuration information, and the configuration information is used to configure a connection between an access network device and the NSFd The non-access stratum channel; the NSFd establishes a non-access stratum channel with the access network device according to the configuration information.
  • the access network device may receive the NAS message from the terminal, and separately process the centralized NAS message and the distributed NAS message in the NAS message. If the NAS message includes the first distributed NAS message, the access network device processes the first distributed NAS message to obtain a second distributed NAS message, and sends the second NAS message to the first network element. In other words, the access network device can perform offload processing in the NAS message, thereby improving processing efficiency.
  • the method further includes: the first network element receives a second distributed NAS message from the access network device through the non-access stratum channel.
  • the method further includes: the first network element receives a handover response message, the handover response message includes second configuration information, and the second configuration information is used to configure the access network device and the first network element.
  • the second network element determines that the NSFd needs to be replaced according to the handover request sent by the AMF request to switch to the new access network device, then the handover response message sent by the second network element to the AMF includes the configuration information for Configure the non-access layer channel between the new access device and the new NSFd.
  • a message transmission system in an eighth aspect, includes an access network device, a first network element, and a third network element.
  • the access network device is configured to receive a first message from a terminal. When the message includes a first non-terminal-related message, send a second non-terminal-related message to the first network element, and/or when the first message includes a first terminal-related message, send a second terminal-related message to the third network element .
  • the access network device can divide the message into a non-terminal-related message and a terminal-related message according to whether it is related to the terminal, and then send it to different network elements for separate processing, thereby improving processing efficiency.
  • the access network equipment switches between different first network elements, or switches between different third network elements, which can be understood as TNLA switching, and TNLA switching is performed for the terminal and the access network equipment.
  • TNLA switching a network element that switches between different third network elements.
  • the power consumption overhead is lower, and the time delay is shorter, thereby reducing signaling overhead or service interruption.
  • the first network element and the third network element are deployed in an access management function AMF.
  • the first network element and the third network element can be regarded as having part of the functions of the AMF in the traditional solution, or in other words, the traditional solution divides the AMF function into the first network element and the third network element to perform.
  • the first network element may be AMF-N2-common, and the AMF-N2-common is used to process N2 interface management and non-terminal related signaling processing.
  • the third network element may be AMF-N1N2, and the AMF-N1N2 is used for N2 signaling related to the terminal.
  • the third network element is set at a position where the transmission delay of the terminal-related message between the access network device and the access network device is less than or equal to a preset threshold.
  • the distance between the third network element and the access network device is such that the transmission delay of terminal-related messages between the two is less than or equal to a preset threshold, which can reduce the transmission delay of terminal-related messages.
  • a message transmission method includes: an access network device receives a first message from a terminal; when the first message includes a terminal-related message, the access network device sends the message to the first network element A terminal-related message; and/or the access network device sends the non-terminal-related message to a third network element when the first message includes a non-terminal-related message.
  • the access network device can divide the message into a non-terminal-related message and a terminal-related message according to whether it is related to the terminal, and then send it to different network elements for separate processing, thereby improving processing efficiency.
  • the method further includes: the access network device receiving configuration information, the configuration information being used to configure a transport layer network association between the access network device and the first network element for the terminal TNLA connection, and/or used to configure the TNLA connection between the access network device and the third network element for the terminal; the access network device establishes the access network device and the first network element according to the configuration information A TNLA connection between the network elements for the terminal; and/or the access network device establishes a TNLA connection for the terminal between the access network device and the third network element according to the configuration information.
  • the second configuration information can be used to configure the TNLA connection between the third network element and the access network device for the terminal, so that for the terminal and the access network device, performing TNLA handover is relative to performing signaling
  • the power consumption overhead of the handover of the connection is low, and the time delay is short, thereby reducing signaling overhead or service interruption.
  • the configuration information includes TNLA information of the first network element and/or TNLA information of the third network element; wherein, the TNLA information of the first network element includes the address of the first network element Information, identification information of the distributed core network corresponding to the first network element, slice information that the first network element can use, information about the geographic area to which the first network element belongs, and information about the tracking area to which the first network element belongs List information, at least one of the NSFd type supported by the distributed core network corresponding to the first network element and the capacity supported by the distributed core network corresponding to the first network element; the TNLA information of the third network element includes the first network element The address information of the three network elements, the identification information of the distributed core network corresponding to the third network element, the slice information that the third network element can use, the information of the geographic area to which the third network element belongs, and the third network element At least one of the list information of the tracking area to which the third network element belongs, the NSFd type supported by the distributed core network corresponding to the third network element
  • a message transmission method includes: a third network element sending configuration information, the configuration information being used to configure a terminal-specific transport layer network between an access network device and the third network element Associate a TNLA connection; the third network element receives terminal-related messages from the access network device through the TNLA.
  • the access network device can divide the message into a non-terminal-related message and a terminal-related message according to whether it is related to the terminal, and then send it to different network elements for separate processing, thereby improving processing efficiency.
  • the method before the third network element receives terminal-related messages from the access network device through the TNLA, the method further includes: the third network element sends a registration request to the network storage function NRF, and the registration Request is used to request access to the network.
  • the method further includes: the third network element sends update information to a fourth network element, the update information includes context information of the terminal, and the fourth network element is used to process terminal-related messages.
  • the third network element and the fourth network element may be different network elements of the same kind, for example, the third network element is an old (old) AMF-N1N2, and the fourth network element is a new (new) AMF-N1N2.
  • the terminal can perform AMF-N1N2 handover due to movement or due to different services.
  • old AMF-N1N2 can select an appropriate AMF-N1N2 (that is, newAMF-N1N2) based on the reason for the current AMF-N1N2 change, and synchronize the context information of the terminal to newAMF-N1N2.
  • the method further includes: the third network element receives a release message from the fourth network element; the third network element releases the third network element and the access network device according to the release message TNLA connection for the terminal.
  • the fourth network element confirms that the terminal has completed the handover from the third network element to the fourth network element, and then sends a release message to the third network element, and the third network element releases the third network element and the access network device according to the release message TNLA connection for the terminal.
  • the configuration information includes TNLA information of the first network element and/or TNLA information of the third network element; wherein, the TNLA information of the first network element includes the address of the first network element Information, identification information of the distributed core network corresponding to the first network element, slice information that the first network element can use, information about the geographic area to which the first network element belongs, and information about the tracking area to which the first network element belongs List information, at least one of the NSFd type supported by the distributed core network corresponding to the first network element and the capacity supported by the distributed core network corresponding to the first network element; the TNLA information of the third network element includes the first network element The address information of the three network elements, the identification information of the distributed core network corresponding to the third network element, the slice information that the third network element can use, the information of the geographic area to which the third network element belongs, and the third network element At least one of the list information of the tracking area to which the third network element belongs, the NSFd type supported by the distributed core network corresponding to the third network element
  • a message transmission method includes: a first network element sending configuration information, the configuration information being used to configure a transmission layer between an access network device and the first network element for the terminal
  • the network is associated with a TNLA connection; the first network element receives non-terminal related messages from the access network device through the TNLA.
  • the first configuration information can be used to configure the TNLA connection between the first network element and the access network device for the terminal.
  • performing TNLA handover is relative to performing signaling
  • the power consumption overhead of the handover of the connection is low, and the time delay is short, thereby reducing signaling overhead or service interruption.
  • the method before the first network element receives the non-terminal related message from the access network device through the TNLA, the method further includes: the first network element sends a registration request to a network storage function NRF, The registration request is used to request access to the network; the third network element receives a registration response message, and the registration response message is used to indicate a second network element corresponding to the third network element.
  • the first network element may send a registration request to the NRF or the service communication framework to request access to the network, which can process the message sent by the access network device.
  • the NRF or the service communication framework may also send a response message to the first network element, and the response message may include the identifier of the second network element.
  • the configuration information includes TNLA information of the first network element and/or TNLA information of the third network element; wherein, the TNLA information of the first network element includes the address of the first network element Information, identification information of the distributed core network corresponding to the first network element, slice information that the first network element can use, information about the geographic area to which the first network element belongs, and information about the tracking area to which the first network element belongs List information, at least one of the NSFd type supported by the distributed core network corresponding to the first network element and the capacity supported by the distributed core network corresponding to the first network element; the TNLA information of the third network element includes the first network element The address information of the three network elements, the identification information of the distributed core network corresponding to the third network element, the slice information that the third network element can use, the information of the geographic area to which the third network element belongs, and the third network element At least one of the list information of the tracking area to which the third network element belongs, the NSFd type supported by the distributed core network corresponding to the third network element
  • a device in a twelfth aspect, may be a proxy server, or a chip in the proxy server, for example, a chip that can be set in the proxy server.
  • the device has the function of realizing the above-mentioned second aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module.
  • the device further includes a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter.
  • the transceiver module Can include radio frequency circuits or antennas.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example. When a storage module is included, the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or from other instructions, so that the device executes the second aspect described above and various possible implementation modes of communication methods.
  • the device can be the main access network device.
  • the chip when the device is a chip, the chip includes a transceiver module.
  • the device further includes a processing module, and the transceiver module may be, for example, an input/output interface, a pin, or a circuit on the chip.
  • the processing module may be a processor, for example.
  • the processing module can execute instructions so that the chip in the terminal device executes the second aspect and any possible implementation communication methods.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a device in a thirteenth aspect, may be an access network device or a chip for an access network device, such as a chip that can be set in the access network device.
  • the device has the ability to implement the third Aspects, and the functions of various possible implementations. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module.
  • the device further includes a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example.
  • the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other sources, so that the device executes the third aspect or any one of the methods described above.
  • the chip when the device is a chip, the chip includes a transceiver module, and optionally, the chip further includes a processing module.
  • the transceiver module may be an input/output interface, pin or circuit on the chip, for example.
  • the processing module may be a processor, for example. The processing module can execute instructions so that the chip in the auxiliary access network device executes the third aspect and any possible implemented communication methods.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above All aspects of communication method program execution integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a device in a fourteenth aspect, may be an AMF or a chip for AMF, such as a chip that can be set in the AMF.
  • the device has the function of realizing the above-mentioned fourth aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes: a transceiver module and a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example.
  • the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other sources, so that the device executes the foregoing fourth aspect or any one of the methods.
  • the chip when the device is a chip, the chip includes a transceiver module and a processing module.
  • the transceiver module may be an input/output interface, pin or circuit on the chip, for example.
  • the processing module may be a processor, for example. The processing module can execute instructions so that the chip in the terminal device executes the fourth aspect and any possible implementation communication methods.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above All aspects of communication method program execution integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a device in a fifteenth aspect, may be an access network device or a chip for the access network device, such as a chip that can be set in the access network device.
  • the device has the function of realizing the above-mentioned sixth aspect and various possible implementation modes. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module.
  • the device further includes a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter.
  • the transceiver module Can include radio frequency circuits or antennas.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example. When a storage module is included, the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or from other instructions, so that the device executes the sixth aspect described above and various possible implementation modes of communication methods.
  • the device can be the main access network device.
  • the chip when the device is a chip, the chip includes a transceiver module.
  • the device also includes a processing module.
  • the transceiver module may be, for example, an input/output interface or pin on the chip. Or circuits, etc.
  • the processing module may be a processor, for example.
  • the processing module can execute instructions so that the chip in the terminal device executes the sixth aspect and any possible implementation communication methods.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a device in a sixteenth aspect, is provided.
  • the device may be NSFd or a chip for NSFd, such as a chip that can be set in NSFd.
  • the device has the function of realizing the above-mentioned seventh aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes: a transceiver module and a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example.
  • the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other sources, so that the device executes the seventh aspect or any one of the methods described above.
  • the chip when the device is a chip, the chip includes a receiving module and a transmitting module.
  • the chip further includes a processing module.
  • the receiving module and the sending module may be input/output interfaces, pins or circuits on the chip, for example.
  • the processing module may be a processor, for example.
  • the processing module can execute instructions so that the chip in the auxiliary access network device executes the seventh aspect and any possible implementation communication methods.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above
  • the seventh aspect is an integrated circuit for program execution of the communication method.
  • a device in a seventeenth aspect, may be an access network device or a chip for the access network device, such as a chip that can be set in the access network device.
  • the device has the function of realizing the above-mentioned ninth aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module.
  • the device further includes a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter.
  • the transceiver module Can include radio frequency circuits or antennas.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example. When a storage module is included, the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or from other instructions, so that the device executes the aforementioned ninth aspect and various possible implementation modes of communication methods.
  • the device can be the main access network device.
  • the chip when the device is a chip, the chip includes a transceiver module.
  • the device also includes a processing module.
  • the transceiver module may be, for example, an input/output interface or pin on the chip. Or circuits, etc.
  • the processing module may be a processor, for example.
  • the processing module can execute instructions so that the chip in the terminal device executes the ninth aspect and any possible implementation communication method.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a device which may be a third network element or a chip used for the third network element, such as a chip that can be set in the third network element.
  • the device has the function of realizing the above tenth aspect and various possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module.
  • the device further includes a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example.
  • the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other sources, so that the device executes the tenth aspect described above, or any one of the methods thereof.
  • the chip when the device is a chip, the chip includes a transceiver module, and optionally, the chip further includes a processing module.
  • the transceiver module may be an input/output interface, pin or circuit on the chip, for example.
  • the processing module may be a processor, for example. The processing module can execute instructions so that the chip in the auxiliary access network device executes the tenth aspect and any possible implemented communication methods.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above
  • the tenth aspect is an integrated circuit for program execution of the communication method.
  • a device in a nineteenth aspect, may be a first network element or a chip for the first network element, such as a chip that can be set in the first network element.
  • the device has the function of realizing the above-mentioned eleventh aspect and various possible implementation modes. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the device includes a transceiver module.
  • the device further includes a processing module.
  • the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna.
  • the processing module may be a processor.
  • the device further includes a storage module, and the storage module may be a memory, for example.
  • the storage module is used to store instructions.
  • the processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or instructions derived from other sources, so that the device executes the eleventh aspect described above, or any one of the methods thereof.
  • the chip when the device is a chip, the chip includes a transceiver module, and optionally, the chip further includes a processing module.
  • the transceiver module may be an input/output interface, pin or circuit on the chip, for example.
  • the processing module may be a processor, for example. The processing module can execute instructions so that the chip in the terminal device executes the eleventh aspect and any possible implementation communication methods.
  • the processing module may execute instructions in the storage module, and the storage module may be a storage module in the chip, such as a register, a cache, and the like.
  • the storage module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM) etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above
  • the eleventh aspect is an integrated circuit for program execution of the communication method.
  • a computer storage medium stores program code, and the program code is used to instruct the execution of the second aspect to the fourth aspect, the sixth aspect to the seventh aspect, and the ninth aspect.
  • a computer program product containing instructions which when running on a computer, causes the computer to execute the above-mentioned second aspect to the fourth aspect, the sixth aspect to the seventh aspect, and the ninth aspect to the tenth aspect. Any one of one aspect, or a method in any possible implementation manner.
  • the proxy server receives the first NAS message of the terminal from the access network device, and determines whether the first NAS message includes a centralized NAS message or a distributed NAS message. If the first NAS message includes the first centralized NAS message, the proxy server sends a second centralized NAS message to the AMF; if the first NAS message includes the first distributed NAS message, the proxy server sends the distributed non-distributed NAS message The access layer service function NSFd sends the second distributed NAS message.
  • the proxy server in the embodiment of the present application can send the distributed NAS message and the centralized NAS message to different processing network elements for processing, that is, the NAS message is split for processing, thereby improving processing efficiency.
  • FIG. 1 is a schematic diagram of a possible network architecture of an embodiment of the present application
  • Figure 2 is a schematic diagram of a possible network architecture of the traditional solution
  • Figure 3 is a schematic diagram of another possible network architecture of the traditional solution
  • Figure 4 is a schematic diagram of another possible network architecture of the traditional solution
  • FIG. 5 is a schematic block diagram of a non-access stratum message transmission system according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a NAS message transmission method according to an embodiment of the present application.
  • Fig. 7 is a schematic flow chart of establishing a session connection of a proxy server
  • FIG. 8 is a schematic flowchart of a NAS message transmission method according to a specific embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a NAS message transmission method according to another specific embodiment of the present application.
  • FIG. 10 is a schematic flowchart of a method for session release according to a specific embodiment of the present application.
  • FIG. 11 is a schematic flowchart of a method for replacing a proxy server according to an embodiment of the present application.
  • FIG. 12 is a schematic flowchart of a method for replacing a proxy server according to another embodiment of the present application.
  • FIG. 13 is a schematic block diagram of a NAS message transmission system according to an embodiment of the present application.
  • FIG. 14 is a schematic flowchart of a NAS message transmission method according to an embodiment of the present application.
  • FIG. 15 is a schematic diagram of a method of generating security parameters in an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a message structure included in a NAS message according to an embodiment of the present application.
  • FIG. 17 is a schematic diagram of a message transmission system according to an embodiment of the present application.
  • FIG. 18 is a schematic flowchart of a message transmission method according to an embodiment of the present application.
  • FIG. 19 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 20 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 21 is a schematic block diagram of a communication device according to another embodiment of the present application.
  • FIG. 22 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 23 is a schematic block diagram of a communication device according to another embodiment of the present application.
  • FIG. 24 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 25 is a schematic structural diagram of a communication device according to another embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal in the embodiments of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user Device.
  • the terminal can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in the future 5G network or terminals in the future evolved public land mobile network (PLMN), etc. This is not limited in the embodiments of the present application.
  • the network equipment in the embodiments of the present application may be equipment used to communicate with terminals.
  • the network equipment may be a global system for mobile communications (GSM) system or code division multiple access (CDMA).
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • the base transceiver station (BTS) can also be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evoled NodeB) in an LTE system.
  • NodeB base station
  • WCDMA wideband code division multiple access
  • evoled NodeB evolved base station
  • ENB or eNodeB it can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and the future 5G
  • BBU baseband unit
  • DU distributed unit
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some of the functions of the gNB, and the DU implements some of the functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer functions.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , Or, sent by DU+AAU.
  • the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited in this application.
  • the terminal or network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided in accordance with the embodiments of the application.
  • the execution subject of the method provided in the embodiment of the present application may be a terminal or a network device, or a functional module in the terminal or network device that can call and execute the program.
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • Fig. 1 is a schematic diagram of a possible network architecture according to an embodiment of the present application.
  • the network architecture includes: terminal 101, (radio access network, (R)AN) 102, user plane function (UPF) network element 103, and data network (data network, DN) network element 104, authentication server function (authentication server function, AUSF) network element 105, access and mobility management function (access and mobility management function, AMF) network element 106, session management function (session management function) , SMF) network element 107, network exposure function (NEF) network element 108, network storage function (NRF) network element 109, policy control function (PCF) network element 110, Unified data management (UDM) network element 111.
  • R radio access network
  • UPF user plane function
  • DN data network
  • authentication server function authentication server function, AUSF
  • AMF access and mobility management function
  • AMF access and mobility management function
  • AMF access and mobility management function
  • SMF session management function
  • NEF network exposure function
  • UPF network element 103 As follows, UPF network element 103, DN network element 104, AUSF network element 105, AMF network element 106, SMF network element 107, NEF network element 108, NRF network element 109, policy control function (PCF) network element 110.
  • the UDM network element 111 is abbreviated as UPF103, DN104, AUSF105, AMF106, SMF107, NEF108, NRF109, PCF120, UDM111.
  • AMF106 is a core network element and is mainly responsible for signaling processing, such as access control, mobility management, attachment and detachment, and gateway selection. AMF106 can also provide services for sessions in terminal devices. In this case, storage resources of the control plane are provided for the session to store the session identifier, the SMF network element identifier associated with the session identifier, and so on. SMF107 is responsible for user plane network element selection, user plane network element redirection, internet protocol (IP) address allocation, bearer establishment, modification and release, and quality of service (QoS) control. UPF103 is responsible for forwarding and receiving user data in terminal equipment.
  • IP internet protocol
  • QoS quality of service
  • the UPF can receive user data from the data network and transmit it to the terminal device through the access network device, and can also receive user data from the terminal device through the access network device and forward it to the data network.
  • the transmission resources and scheduling functions of the UPF103 that provide services for terminal equipment are managed and controlled by the SMF network element.
  • PCF110 mainly supports the provision of a unified policy framework to control network behavior, provides policy rules to the control layer network functions, and is responsible for obtaining user subscription information related to policy decisions.
  • UDM111 can be used for unified data management, supporting 3GPP authentication, user identity operation, authorization granting, registration and mobility management functions.
  • Nausf is the service-based interface displayed by AUSF105
  • Namf is the service-based interface displayed by AMF106
  • Nsmf is the service-based interface displayed by SMF107
  • Nnef is the service-based interface displayed by NEF108
  • Nnrf is displayed by NRF109
  • Npcf is the service-based interface displayed by PCF110
  • Nudm is the service-based interface displayed by UDM111.
  • the N1 interface is the reference point between UE101 and AMF106
  • the N2 interface is the reference point of (R)AN102 and AMF106, which is used to send non-access stratum (NAS) messages, etc.
  • the N3 interface is (R) The reference point between AN102 and UPF103 is used to transmit user plane data, etc.
  • the N4 interface is the reference point between SMF107 and UPF103, used to transmit, for example, the tunnel identification information of the N3 connection, data buffering indication information, and downlink data notification Messages and other information
  • N6 interface is the reference point between UPF103 and DN104, used to transmit user plane data, etc.
  • control plane data ie non-access layer messages
  • the data interaction between the terminal and the core network element needs to be forwarded by AMF, and in order to avoid frequent signaling connection changes caused by terminal movement, it is necessary to change
  • the location of AMF deployment is relatively high, so that the terminal needs to send all non-access stratum messages to the AMF, which makes the processing efficiency low.
  • the LMF network element mainly supports functions such as positioning-related positioning procedures, positioning methods, and positioning calculations
  • the SMSF network element mainly supports functions such as analysis and forwarding of short message services.
  • FIG. 5 shows a schematic block diagram of a non-access stratum message transmission system 500 according to an embodiment of the present application.
  • the system 500 includes a terminal 510, an access network device 520, a proxy server 530, an AMF 540, and a first network element 550.
  • the proxy server 530 in the embodiment of the present application may be an "AMF proxy server (proxy)".
  • the AMF may be a centralized non-access layer data processing network element
  • the first network element may be a distributed non-access layer data processing network element.
  • the first network element may be a distributed NAS-based service function (NSFd) network element.
  • NSFd NAS-based service function
  • the access network device 520 is configured to receive a first NAS message from the terminal and send the first NAS message to the proxy server;
  • the proxy server 530 is configured to send a second centralized NAS message to the AMF when the first NAS message includes the first centralized NAS message, and/or, when the first NAS message includes the first distributed NAS message , Send a second distributed NAS message to the first network element.
  • the proxy server receives the first NAS message from the access network device, and determines whether the first NAS message includes a centralized NAS message or a distributed NAS message. If the first NAS message includes the first centralized NAS message, the proxy server sends a second centralized NAS message to AMF; if the first NAS message includes the first distributed NAS message, the proxy server sends to the NSFd Send the second distributed NAS message. That is to say, compared with the traditional solution, the embodiment of the present application deploys a proxy server and NSFd, and the proxy server can send distributed NAS messages and centralized NAS messages to different processing network elements for processing, that is, NAS messages are split and processed. Thereby improving processing efficiency.
  • the number of proxy servers in the embodiment of this application can be one or more; the number of distributed non-access layer data processing units in the embodiment of this application can also be one or more.
  • the number of centralized non-access stratum data processing units in the embodiment of this application can also be one or more, which is not limited in this application.
  • the interface between the access network device 520 and the proxy server 530 may be referred to as an "N2" interface.
  • the interface between the proxy server 530 and the AMF 540 may be referred to as an "N2*" interface, that is, the proxy server forwards the NAS message on the N2 interface between the access network device and the AMF.
  • the information sent by the AMF to the proxy server through the N2* interface needs to be sent through the N2 interface between the proxy server and the access network device.
  • the proxy server and the AMF need to have the functions of the original N2 interface, as well as the functions of the N2* interface.
  • the access network equipment may only have the function of the N2 interface.
  • the centralized NAS message and the distributed NAS message may be two types of messages that require different transmission delays, or may be messages managed by different operators, which is not limited in this application.
  • the NSFd 550 is deployed at a location where the transmission delay of the distributed NAS message with the access network device is less than or equal to a preset time threshold.
  • the transmission of distributed NAS messages in the embodiments of the present application can reduce transmission delay.
  • the access network device and the AMF can be transmitted through the transport network layer association (TNLA), and the access network device and the proxy server can also be transmitted through TNLA.
  • TNLA transport network layer association
  • the access network equipment switches between different proxy servers, that is, switches TNLA instead of switching between different AMFs. That is to say, for the terminal and the access network equipment, the N2 and N1 connections have not changed, so the terminal does not need to switch the signaling connection, thereby reducing signaling overhead or service interruption.
  • the AMF can communicate with the access network equipment through TNLA, and the access network equipment and the proxy server can also communicate through TNLA, so that the access network equipment only performs TNLA switching without switching AMF , There is no need to perform related signaling switching, thereby reducing signaling overhead.
  • the system 500 further includes a network storage function (NSF) 560.
  • NSF network storage function
  • the NSF can be directly connected to NSFd 550, and can also be directly connected to AMF 540.
  • the NSF can be the LMF shown in Figure 2, or the SMSF shown in Figure 3, or the UPF shown in Figure 4, or it can be any other new functional module that uses NAS as a transport bearer in the future. , This application does not limit this.
  • system 500 further includes a central non-access layer data processing network element 570.
  • the central non-access stratum data processing network element may be a centralized central NSF (central NSF, NSFc), and the NSFc may be independently deployed or built into the AMF as a component, which is not limited in this application.
  • NSFc can manage NSFd, for example, create, update or delete NSFd.
  • Fig. 6 shows a schematic flowchart of a NAS message transmission method according to an embodiment of the present application. This method can be applied to the communication system shown in FIG. 5.
  • the proxy server receives a first NAS message of a terminal from an access network device.
  • the access network device sends the first NAS message to the proxy server.
  • a proxy server is inserted between the access network device and the AMF, so that after receiving the first NAS message from the terminal, the access network device sends the first NAS message to the proxy server.
  • proxy server may be "AMF proxy".
  • the AMF sends second configuration information to the access network device, where the second configuration information is used to indicate the relationship between the access network device and the AMF, and/or the access network device and at least one A transport network layer association (TNLA) connection for the terminal between proxy servers.
  • the access network device receives the second configuration information.
  • TNLA transport network layer association
  • the access network device receives the second configuration information, and establishes a TNLA connection with the AMF for the terminal according to the second configuration information, and/or establishes a connection with each of the at least one proxy server TNLA connection for this terminal.
  • the access network equipment can switch the TNLA connection, but for the access network equipment and the terminal, the N1 and N2 connections have not changed, that is, there is no need to switch the signaling connection, which avoids unnecessary information. Order overhead.
  • the configuration information used to configure the TNLA connection between the first access network device and the AMF for the terminal and the configuration information used to configure the TNLA connection between the access network device and the proxy server for the terminal
  • the configuration information of the connection may be uniformly configured through one piece of configuration information, or different configuration information may be configured separately, which is not limited in this application.
  • the proxy server after the TNLA connection between the proxy server and the access network device for the terminal is established, it can also be activated by the downlink signal sent by the proxy server to the access network device.
  • the second configuration information may include the TNLA information of the proxy server and/or the TNLA information of the AMF; wherein, the TNLA information of the proxy server includes the address information of the proxy server, and the distributed core corresponding to the proxy server.
  • the TNLA information of the AMF includes the address information of the AMF, the identification information of the distributed core network corresponding to the AMF, the slice information that the AMF can use, and the At least one of the information of the geographic area to which the AMF belongs, the list information of the tracking area to which the AMF belongs, the NSFd type supported by the distributed core network corresponding to the AMF, and the capacity supported by the distributed core network corresponding to the AMF.
  • the TNLA information of the proxy server may specifically include the address information of the proxy server, the identification information of the distributed core network to which the proxy server is connected, the network slice information that the proxy server can use, and the information about the address area to which the proxy server belongs. Information, the list information of the tracking area to which the proxy server belongs, the type of NSFd supported by the distributed core network to which the proxy server is connected, and the capacity supported by the distributed core network to which the proxy server is connected.
  • the TNLA information of the AMF may specifically include the address information of the AMF, the identification information of the distributed core network corresponding to the AMF, the network slice information that the AMF can use, the information of the address area to which the AMF belongs, and the tracking area to which the AMF belongs.
  • the distributed core network corresponding to the AMF may be a distributed core network network element (for example, NSFd1) that can implement data offloading with the AMF.
  • NSFd1 distributed core network network element
  • the proxy server can determine whether the NAS message is a distributed NAS message or a centralized NAS message, and send the distributed NAS message to NSFd1 and the centralized NAS message to AMF.
  • the address information of the proxy server may specifically be an internet protocol (IP) address of the proxy server.
  • IP internet protocol
  • the AMF may send the second configuration information to the access network device when the proxy server requests to configure the TNLA connection between the access network device and the proxy server for the terminal. That is to say, the proxy server can actively send a request message to the AMF, and the AMF sends the second configuration information after receiving the request message, which avoids the need to establish a TNLA between the proxy server and the access network device , TNLA is still established, saving signaling and resource overhead.
  • the request message includes at least one of address information, identification information of the corresponding core network, slice information, geographic area information, tracking area list information, the type of NSFd supported by the corresponding core network, and the capacity supported by the corresponding core network.
  • address information identification information of the corresponding core network
  • slice information geographic area information
  • tracking area list information the type of NSFd supported by the corresponding core network
  • capacity supported by the corresponding core network One item.
  • the proxy server may first collect relevant information of the distributed non-access layer data processing network element, such as address information, corresponding core network identification information, slice information, geographic area information, tracking area list information, and corresponding core At least one of the NSFd type supported by the network and the capacity supported by the corresponding core network.
  • relevant information of the distributed non-access layer data processing network element such as address information, corresponding core network identification information, slice information, geographic area information, tracking area list information, and corresponding core At least one of the NSFd type supported by the network and the capacity supported by the corresponding core network.
  • the proxy server sends the request message to the AMF, it carries the above-mentioned related information, so that the AMF can refer to the configuration information of the TNLA connection between the access network device and the proxy server for the terminal when configuring the access network device.
  • the information carried in the request message helps to configure a more suitable TNLA between the access network device and the proxy server, and improves the communication quality.
  • the TNLA information may also include the message type.
  • the TNLA information item may be a transport network layer (transportation network layer, TNL) related usage (association usage), and the TNL association usage indicates the corresponding message type.
  • the message type may be a UE-associated (NG application protocol, NGAP) message.
  • NGAP UE-associated
  • the access network device may also determine whether to use the TNLA connection between the access network device and the proxy server for the terminal by setting a weight (TNL association weight factor).
  • the access network device when the TNL association weight factor is 0, the access network device cannot automatically transmit the terminal's NAS message through TNLA and the proxy server; when the TNL association weight factor is non-zero, the access network device can use TNLA to communicate with the proxy server. Transmit the NAS message of the terminal. In this way, the access network device can be controlled to transmit the NAS message of the terminal with the proxy server, that is, the access network device can flexibly select the proxy server or AMF for communication, thereby improving the communication efficiency.
  • the access network device may also use other information to indicate the corresponding message type.
  • the other information may be newly defined signaling or a source identifier (flag) carried in the signaling.
  • the access network device may also be used to send a response message to the AMF, where the response message includes a list of successfully established TNLAs and failed TNLAs.
  • an operation and maintenance (OAM) network management system sends the second configuration information to the AMF.
  • the AMF receives the second configuration information from the OAM network management system.
  • the second configuration information is actively sent to the AMF by the OAM network management system.
  • One or more AMFs can usually serve an area. There may be multiple data centers deploying distributed core networks in this area. The distributed core network is used to deploy different types of NSFd. Each data center There are one or more proxy servers to serve, responsible for the forwarding of NAS messages.
  • the OAM network management system may send the second configuration information to one or more AMFs.
  • the NSFc may also send the second configuration information to the AMF.
  • the proxy server sends a second distributed NAS message to NSFd.
  • the NSFd receives the distributed NAS message.
  • the proxy server receives the first NAS message to determine whether the first NAS message includes the first distributed NAS message or the first centralized NAS message. If the NAS message includes the first distributed NAS message, the proxy server processes the first distributed NAS message to obtain a second distributed NAS message, and sends the second NAS message to the first network element.
  • the communication system may include multiple NSFd, and the distance between each NSFd and the access network device may be different.
  • the proxy server can select the appropriate NSFd according to the transmission delay requirements.
  • the proxy server NSFd parses the first NAS message according to the security parameters, and can learn the content of the first NAS message after parsing. For example, it may only include the first centralized NAS message, or only include the first distributed NAS message.
  • the NAS message may include the first centralized NAS message and the first distributed NAS message.
  • the proxy server sends a second centralized NAS message to the AMF.
  • the AMF receives the second centralized NAS message.
  • the proxy server processes the first centralized NAS message to obtain the second centralized NAS message, and sends the second centralized NAS message to the AMF.
  • both step 602 and step 603 may be performed, or only one of them may be performed, which is not limited in the present application.
  • both steps 602 and 603 are performed, the two steps can be performed simultaneously or separately, and the sequence between the two steps is not limited.
  • the proxy server can replace NSFd.
  • the NSFd currently connected to the proxy server is the first network element (or "old NSFd"), and the NSFd to be replaced is selected as the third network element (or "new NSFd").
  • the AMF may send to the first network element notification information that the establishment of the connection between the third network element and the proxy server is completed.
  • the first network element may also send fourth configuration information to the third network element, where the fourth configuration information is used for the connection between the third network element and the NSF.
  • the fourth configuration information may include NSF context information, that is, the NSF uplink information in the third configuration information may be carried in the fourth configuration information and sent to the third network element.
  • the proxy server processes the first distributed NAS message to obtain the second distributed NAS message, which can specifically decrypt and encrypt the first distributed NAS message according to the secret key and the NAS message count value (NAS COUNT) Then get the second distributed NAS message.
  • the proxy server processes the first centralized NAS message to obtain the second centralized NAS message. Specifically, it can decrypt the first centralized NAS message according to the secret key and the NAS message count (NAS COUNT), and encrypt it. Get the second centralized NAS message.
  • secret key can be represented by KNASenc.
  • the proxy server may also parse and encrypt the first distributed NAS message or the first centralized NAS message according to the security parameters and the NAS message count value to obtain the second distributed NAS message or the second centralized NAS message. .
  • security parameters may include secret keys and integrity protection parameters, where the integrity protection parameters may be represented by KNASint.
  • the AMF receives the service request, and determines the proxy server that processes the service request according to the service request.
  • the communication system may include multiple proxy servers, and the AMF receives the service request, and selects an appropriate proxy server from the multiple proxy servers according to the service type requested by the service request.
  • the service request includes a service type, and when the service type of the service request is a low-latency service, the low-latency can also be classified into levels.
  • AMF can select different proxy servers for service requests with different delay levels, thereby improving the service processing performance of the system.
  • the service request can be a low-latency service or a normal-latency service.
  • the length of the delay can be expressed by the quality of service (QoS) indicator of the delay.
  • proxy servers among the multiple proxy servers may require different delays for forwarding services.
  • the service request may also include at least one of positioning accuracy requirements, terminal capabilities, and strategies.
  • the strategy can be access priority, access capacity upper limit, etc.
  • the embodiments of the present application can be applied to the scenario where the AMF selects the proxy server for the terminal for the first time, and can also be applied to the scenario where the proxy server is updated, which is not limited in this application.
  • the service request may include delay requirements, the current location of the terminal, whether the distributed core network corresponding to each proxy server can deploy the requested service function carried by the NAS, the load of each proxy server, and the resource status of the distributed core network , PLMN ID information, slice information (for example, S-NSSAI, NSI-ID), or at least one of the local selection strategy.
  • PLMN ID information for example, S-NSSAI, NSI-ID
  • slice information for example, S-NSSAI, NSI-ID
  • the service request may be sent by an external network element to the NSFc, and the NSFc forwards the service request to the AMF.
  • a network function NF may send the service request to the NSFc.
  • the AMF can directly receive the service request.
  • the AMF sends first configuration information to the proxy server, where the first configuration information is used to configure the connection between the proxy server and the AMF.
  • the selected proxy server can be configured with parameters for establishing a connection between the proxy server and the AMF, so as to realize the communication between the AMF and the proxy server.
  • connection between the proxy server and the AMF may be the N2* interface in FIG. 5.
  • the first configuration information may also include N1N2 context information of the terminal.
  • the AMF may carry the N1N2 context information of the terminal in the first configuration information, that is, synchronize the N1N2 context information corresponding to the specified terminal, so that the proxy server can determine the forwarding after receiving the NAS message sent by the access network device for analysis.
  • the proxy server can determine the forwarding after receiving the NAS message sent by the access network device for analysis.
  • the N1 context information of the terminal may include the security key information of the terminal, and the security key information of the terminal may be used to decode and generate a NAS message protected by a security mechanism.
  • the security key information can be the AMF key KAMF, or it can be the KNASint for integrity protection and the key KNASenc for encryption and decryption corresponding to the NAS message generated by the proxy server, or it can be uplink and downlink.
  • NAS message count value (NAS COUNT).
  • the N2 context information of the terminal can be used by the proxy server to send the AMF in the NAS message received from the corresponding access network device.
  • the N2 context information of the terminal may include the following information elements: NGAP ID (AMF UE NGAP ID) corresponding to the AMF side, NGAP ID (RAN UE NGAP ID) corresponding to the access network side, and N2 interface corresponding to the access network Address information (such as RAN's N2IP address), etc.
  • the AMF may also send update information to the proxy server, where the update information is used to instruct to update the N1N2 context information of the terminal.
  • the AMF may re-negotiate context information (for example, encryption and decryption keys) when it detects that it is out of synchronization with the terminal, and send the re-negotiated context information to the proxy server.
  • the proxy server may also send response information to the AMF to indicate whether the update is successful.
  • the response information of the first configuration information is sent to the AMF, and the response information of the first configuration information is used to notify the completion of the connection establishment between the proxy server and the AMF .
  • the response information of the first configuration information may carry information used to establish a connection between the proxy server and the first network element.
  • the first network element may be NSFd.
  • the interface connected between the proxy server and NSFd can be an NL-2 interface. That is, the response information of the first configuration information carries NL-2 interface information, and the NL-2 interface information may include: the IP address and/or port number of the proxy server, the ID of the proxy server, and the uniform resource location of the proxy server At least one of the uniform resource locator (URL), the PLMN ID corresponding to the UE, the slice ID (S-NSSAI, NS-ID) and/or the NL-2 UE ID, and the ID of the NSFd corresponding to the proxy server.
  • URL uniform resource locator
  • the AMF may send response information of the service request to the NSFc after determining that the connection establishment between the proxy server and the AMF is completed.
  • the NSFc determines that the connection between the proxy server and the AMF has been established according to the response information of the service request.
  • the response information of the service request may also carry the identification of the proxy server and/or the identification of the distributed non-access layer data processing network element.
  • the identifier of the proxy server may be at least one of the IP address, URL address, or ID information of the proxy server.
  • the identification of the distributed non-access layer data processing network element may be ID information of the distributed non-access layer data processing network element.
  • NSFc or AMF may send third configuration information to NSFd, and the third configuration information is used to configure the connection between NSFd and NSF.
  • the NSFd can establish a connection with the NSF according to the third configuration information.
  • the third configuration information may include at least one of service types, service requirements, terminal capabilities, policies, or NL-2 interface configuration information.
  • the third configuration information may specifically include NSF context information.
  • the NSFd may send the response information of the third configuration information to the NSFc or the AMF.
  • the response information of the third configuration information is used to indicate whether the connection between NSFd and NSF is successfully established.
  • the AMF may also send first routing configuration information to the proxy server, where the first routing configuration information is used to indicate the mapping relationship, and the mapping relationship includes the correspondence between the service type and the AMF, and/or the correspondence between the service type and the NSFd relationship.
  • the proxy server after the proxy server completes the routing configuration, it can also send response information of the routing configuration information to the AMF to indicate whether the routing configuration is successfully configured.
  • the proxy server can determine whether to send the service to AMF or to NSFd according to the service type of the received service and the mapping relationship.
  • a short-latency service type can correspond to NSFd
  • a long-latency service type can correspond to AMF, so that when the proxy server receives a service, it can determine to send the service to AMF or NSFd according to the service type.
  • the long delay and the short delay in the embodiment of the present application can be obtained by comparing with the preset delay threshold, which is not limited in the present application.
  • the service type may also be a positioning type or an SMS type.
  • the NSFd may also send a routing request to the proxy server.
  • the routing request includes a terminal ID.
  • the proxy server can establish an association based on the terminal ID and the context of the corresponding N1N2 terminal, so that the access network device can handle services of different service types. You can choose a different proxy server for forwarding, which helps to further improve the communication quality.
  • the proxy server can also feed back to the NSFd whether it successfully establishes an association with the context of the N1N2 terminal.
  • the AMF sends a release request to the proxy server, and the release request is used to request the proxy server to stop the service.
  • the proxy server can release the connection with the access network device, release the connection with the AMF, and release the connection with the NSFd according to the release request. For example, delete the N1N2 session with AMF and stop the forwarding of distributed NAS messages.
  • N1N2 UE context release request N1N2 UE context release request
  • the AMF can determine whether the proxy server needs to stop providing services. For example, AMF can determine that the proxy server needs to stop providing services based on the end of the service, interruption, or other reasons.
  • the NSFd determines that the proxy server does not need to provide services, it informs the AMF that the proxy server needs to stop the service through the NSFc.
  • the external network element or NSFc determines that the proxy server does not need to provide services, it can also directly inform the AMF that the proxy server needs to stop providing services.
  • the proxy server may send a release confirmation message to the AMF to inform the AMF proxy server to finish stopping the service.
  • the external network element, NSFc, or NSFd may be referred to as a "second network element" for sending a release request.
  • release confirmation information may be referred to as "N1N2 UE context release confirmation information (N1N2 UE context release ack)".
  • the release confirmation message can also carry a NAS count, and AMF can perform encryption, decryption and integrity protection processing on subsequent NAS messages based on the NAS count, that is, the NAS count can be a NAS message for encryption, decryption and integrity protection.
  • the release confirmation information may also carry the end identifier of the last downlink NAS message, so that the AMF can notify the terminal that the service transmission is complete, that is, the process ends.
  • the AMF may also send instruction information to the access device, and the instruction information may be used to instruct the access device to forward the message through the AMF.
  • the indication information may include TNLA conversion, which is used to instruct the access network device to perform TNLA conversion, that is, switch from the TNLA connection with the proxy server for the terminal to the TNLA connection with the AMF for the terminal. After that, the access network equipment forwards the message through the converted TNLA.
  • TNLA conversion which is used to instruct the access network device to perform TNLA conversion, that is, switch from the TNLA connection with the proxy server for the terminal to the TNLA connection with the AMF for the terminal.
  • the access network device After the access network device switches to the TNLA connection with the AMF for the terminal, it can be bound with the TNLA, so that subsequent messages of the access network device are transmitted through the bound TNLA.
  • Fig. 7 shows a schematic flow chart of establishing a session connection of a proxy server.
  • the external network element sends a service request to the NSFc, where the service request is used to request the sending of a low-latency service.
  • the NSFc receives the service request from the external network element.
  • NSFc sends the service request to AMF.
  • AMF receives the service request from NSFc.
  • the external network element is equivalent to directly sending the service request to the AMF.
  • AMF selects AMF proxy according to the service request.
  • multiple AMF proxies can be set in the communication system, and the AMF can select an appropriate AMF proxy according to the delay of the service requested by the service request.
  • the AMF sends first configuration information to the selected AMF proxy, where the first configuration information is used to configure the connection between the AMF proxy and the AMF.
  • the AMF proxy sends response information of the first configuration information to the AMF.
  • the AMF sends response information of the service request to the NSFc. That is, the response information of step 702.
  • the NSFc sends third configuration information to the NSFd, where the third configuration information is used to configure the connection between the NSFd and the NSF.
  • the request message may carry NSFd context information.
  • NSFd sends response information of the third configuration information to NSFc.
  • the NSFd sends a routing request to the AMF proxy, where the routing request includes the terminal ID.
  • the AMF proxy sends response information to the routing request to NSFd.
  • the AMF proxy sends a TNLA switching request to the terminal through the access network device, and the TNLA switching request may carry a new TNLA.
  • the terminal may trigger the access network device to perform TNLA switching, or the access network device may actively perform TNLA switching.
  • the access network device is bound to a new TNLA.
  • the access network device receives or sends the first NAS message through the new TNLA and AMF proxy.
  • FIG. 8 shows a schematic flowchart of a method for NAS message transmission according to a specific embodiment of the present application.
  • NSFd sends downlink NSF information to AMF proxy.
  • the AMF proxy encrypts the NSF information to generate NAS information.
  • the AMF proxy sends the NAS information to the terminal through the access network device.
  • the access network device may transparently transmit the NAS information.
  • the terminal decrypts the NAS information and performs corresponding processing.
  • the processing can be measurement, positioning or calculation.
  • the terminal sends the processed result to the AMF proxy.
  • the AMF proxy decrypts the NAS information to generate NSF information.
  • the AMF proxy sends the decrypted NSF information to NSFd.
  • FIG. 9 shows a schematic flowchart of a method for NAS message transmission according to another specific embodiment of the present application.
  • the AMF sends downlink NSF information to the AMF proxy.
  • the AMF proxy encrypts the NSF information to obtain the N2 information.
  • the AMF proxy sends the N2 information to the (R)AN.
  • the AMF proxy decrypts the N2 information to generate uplink NSF information.
  • the AMF proxy sends the uplink NSF information to the AMF.
  • FIG. 10 shows a schematic flowchart of a method for session release according to a specific embodiment of the present application.
  • NSFd sends first release information to NSFc, where the first release information is used to request the release of the TNLA connection of the AMF proxy for the terminal.
  • the NSFd determines that the AMF proxy is not required to provide services, it sends the first release information to the AMF through the NSFc.
  • the NSFc sends the first release information to the AMF.
  • the external network element may also detect that the AMF proxy is not required to provide services, and send second release information to the AMF.
  • AMF can also determine whether the AMF proxy needs to stop providing services.
  • steps 1001 and 1002, step 1003, and step 1004 are three parallel schemes. After performing steps 1001 and 1002, step 1005 can be performed directly. Or, after step 1003 is executed, step 1005 can be executed directly. Or, after step 1004 is executed, step 1005 can be executed directly.
  • the AMF sends a release request to the AMF proxy, and the release request is used to request the AMF proxy to stop providing services.
  • step 1005 is performed after performing steps 1001 and 1002, the release request may be the same as the first release information. If step 1005 is executed after step 1003 is executed, the release request may be the same as the second release information.
  • the AMF proxy sends a release confirmation message to the AMF, and the release confirmation message is used to inform the AMF proxy server to stop the service.
  • the AMF sends indication information to the RAN, where the indication information is used to instruct the access device to forward the message through the AMF.
  • AMF can instruct all RAN messages to be forwarded through AMF.
  • the TNLA connection between the access network device and the AMF proxy needs to be converted to the TNLA connection between the access network device and the AMF.
  • the access network device performs a TNLA connection with the AMF for the terminal.
  • the access network device and the AMF communicate through the TNLA connection between the two for the terminal.
  • FIG. 11 shows a schematic flowchart of a method for replacing a proxy server according to an embodiment of the present application.
  • AMF re-selects AMF proxy (hereinafter referred to as "new AMF proxy").
  • the AMF establishes the N1N2 context of the terminal with the new AMF proxy. For example, the AMF sends the first configuration information to the new AMF proxy, and the new AMF proxy feeds back the response information of the first configuration information.
  • the AMF sends notification information to the NSFc, where the notification information is used to notify the new AMF proxy that the connection establishment with the AMF is complete.
  • NSFd and NSFc establish the NSF context, that is, the connection between NSFd and NSF is established.
  • NSFd does not need to be replaced if the proxy server is replaced.
  • NSFd sends proxy server switching information to the new AMF proxy.
  • the new AMF proxy sends TNLA switching information to the access network device.
  • the access network device performs a new TNLA binding.
  • the AMF may send release information to the old AMF proxy.
  • the old AMF proxy can release related TNLA connections.
  • FIG. 12 shows a schematic flowchart of a method for replacing a proxy server according to another embodiment of the present application.
  • AMF re-selects AMF proxy (hereinafter referred to as "new AMF proxy").
  • the AMF establishes the N1N2 context of the terminal with the new AMF proxy. For example, the AMF sends the first configuration information to the new AMF proxy, and the new AMF proxy feeds back the response information of the first configuration information.
  • the AMF sends notification information to the old NSFd, where the notification information is used to notify the new AMF that the connection between the proxy and the AMF is established.
  • the new NSFd and the old NSFd perform an NSF context switch, so that the new NSFd can connect with the NSF.
  • the NSFd is also replaced.
  • the new NSFd sends proxy server switching information to the new AMF proxy.
  • the new AMF proxy sends TNLA switching information to the access network device.
  • the access network device performs a new TNLA binding.
  • the AMF may send release information to the old AMF proxy.
  • the old AMF proxy can release related TNLA connections.
  • FIG. 13 shows a schematic block diagram of a system 1300 for NAS message transmission according to an embodiment of the present application.
  • the system 1300 includes a RAN 1320, an AMF 1340, and a first network element 1330.
  • the system 1300 may further include a UE 1310 and a second network element 1350.
  • system 1300 may include multiple first network elements, and the first network element 1330 may be a network element selected by the second network element from the multiple first network elements.
  • the first network element may be NSFd.
  • the interface between the terminal 1310 and the AMF 1340 may be called an "N1" interface
  • the interface between the access network device 1320 and the AMF 1340 may be called an "N2*" interface
  • the access network device 1320 The interface between the first network element 1330 and the first network element 1330 may be referred to as an "NL-2" interface
  • the interface between the first network element 1330 and the second network element 1350 may be referred to as an "NL-1" interface.
  • the access network device 1320 may be used to send a second centralized NAS message to the access management function AMF when the NAS message includes the first centralized NAS message, and/or, when the NAS message includes the first distributed NAS message At this time, send a second distributed NAS message to the first network element.
  • the access network device may divide the NAS message, that is, the centralized NAS message and the distributed NAS message in the first NAS message are processed separately, and then sent to different network elements for processing.
  • the first centralized NAS message in the NAS message is processed to obtain the second centralized NAS message, and the second centralized NAS message is sent to the AMF.
  • the first distributed NAS message in the NAS message is processed to obtain a second distributed NAS message, and the second distributed NAS message is sent to the first network element for processing.
  • the NAS message may include only the first centralized NAS message, may also include only the first distributed NAS message, or may also include both the first centralized NAS message and the first distributed NAS message.
  • the application is not limited.
  • non-access stratum channel between the access network device and the first network element.
  • connection between the access network device and the AMF may be the same as the connection relationship in the traditional solution, and the non-access layer channel between the access network device and the first network element may be specially established.
  • the access network device can separately process different messages in the NAS message in advance, thereby improving processing efficiency.
  • non-access stratum channel can be expressed as a "NAS* pipe”.
  • the direct non-access layer channel of the two devices may be one channel or multiple channels, which is not limited in this application.
  • the transmission delay of the distributed NAS message between the first network element and the access network device is less than or equal to a preset threshold.
  • the first network element may be deployed at a location where the distance from the access network device is such that the transmission delay for transmitting the distributed NAS message is less than or equal to the preset threshold. In this way, the access network device sends the distributed NAS message to the first network element for processing, which saves transmission delay.
  • the preset threshold may be a factory configuration, or it may be understood that only the first network element that meets the preset threshold may be selected for offloading the NAS message in the access network device.
  • the system 1300 may further include a second network element 1350.
  • the second network element 1350 may be used to send configuration information to the AMF.
  • the configuration information is used to configure the connection between the access network device and the first network element.
  • the second network element 1350 may be used to send a release request to the AMF, and the release request is used to request the access network device to release the non-access layer channel with the first network element Connection.
  • the second network element may be used to manage the connection relationship between the first network element and the access network device, thereby improving the flexibility of the connection relationship between the first network element and the access network device.
  • the second network element 1350 may be "NSFc".
  • the second network element 1350 may be arranged inside the AMF.
  • the second network element may be a module or component inside the AMF, which can be understood as controlling the connection relationship between the first network element and the access network device through the AMF, avoiding adding more network elements and saving power consumption Overhead.
  • the second network element may also be set outside the AMF.
  • the second network element may be set separately, which is not limited in this application.
  • FIG. 14 shows a schematic flowchart of a NAS message transmission method according to an embodiment of the present application.
  • FIG. 14 can be applied to the system shown in FIG. 13, and the same terms in the embodiment shown in FIG. 14 and the embodiment shown in FIG. 13 have the same meaning. To avoid repetition, the following embodiments will not be repeated.
  • the access network device sends a second centralized NAS message to the AMF when the NAS message includes the first centralized NAS message.
  • the access network device may receive the NAS message from the terminal, and separately process the centralized NAS message and the distributed NAS message in the NAS message. If the NAS message includes the first centralized NAS message, the access network device processes the first centralized NAS message to obtain the second centralized NAS message, and sends the second centralized NAS message to the AMF.
  • the access network device When determining that the NAS message includes the first distributed NAS message, the access network device sends a second distributed NAS message to the first network element.
  • the access network device processes the first distributed NAS message to obtain the second distributed NAS message, and sends the second NAS message to the first distributed NAS message.
  • Network element In other words, the access network device can perform offload processing in the NAS message, thereby improving processing efficiency.
  • the NAS message may only include the first centralized NAS message, that is, the access network device may only perform step 1401.
  • the NAS message only includes the first distributed NAS message, that is, the access network device may only perform step 1402.
  • the NAS message may include the first centralized NAS message and the first distributed NAS message at the same time, that is, the access network device executes step 1401 and step 1402.
  • the access network device may process the NAS message according to the first key to determine that the NAS message includes the first centralized NAS message, and may also process the NAS message according to the second key to determine that the NAS message includes The first distributed NAS message.
  • the first centralized NAS message and the first distributed NAS message in the NAS message may be processed separately by using different security parameters, so that the access network device can parse the NAS message through different security parameters.
  • the message included in the NAS thereby further improving the security performance of NAS message transmission.
  • the access network device parses the first centralized NAS message through the first security parameter, and parses the first distributed NAS message through the second security parameter.
  • the first security parameter may be the same as the key in the traditional solution, and the second security parameter may be newly generated by AMF and sent to the access network device.
  • the first security parameter is K NASint and K NASenc
  • the second security parameter may be K NAS*int and K NAS*enc .
  • the first key in the first security parameter and the second key in the second security parameter may be different keys derived from the same root key through different algorithms.
  • the algorithm used to derive the key can be as shown in Table 1 below.
  • Algorithm type (algorithm distinguisher) Identification value (value) N-NAS-enc-alg 0x01 N-NAS-int-alg 0x02 N-RRC-enc-alg 0x03 N-RRC-int-alg 0x04 N-UP-enc-alg 0x05 N-UP-int-alg 0x06 N-NAS*-enc-alg 0x07 N-NAS*-int-alg 0x08
  • K AMF can derive the security parameters of AMF (that is, K NASint and K NASenc ), and can also derive the security parameters of the first network element (K NAS*int and K NAS*enc ),
  • the security parameters of the access network equipment (that is, K gNB, NH ) can also be derived.
  • K gNB, NHs can further derive radio resource control (radio resource control, RRC) security parameters (that is, K RRCint and K RRCenc ) or uplink transmission (uplink, UP) security parameters (that is, K UPint and K UPenc). ).
  • RRC radio resource control
  • the root key is generated by AMF and sent to other network elements.
  • the AMF generates a root key, and derives multiple keys from the root key, and sends them to the access network device, the first network element, or the second network element respectively.
  • the access network device determining whether the NAS message includes the first centralized NAS message and the first distributed NAS message may also be determined according to the value of the EPD field in the message.
  • the structure of the message included in the NAS message may be as shown in FIG. 16, that is, the message may include an extended protocol discriminator (EPD) field, a protocol data unit (protocol data units, PDU) session identification field, Program transaction identification field, message type field and other necessary information element fields.
  • EPD extended protocol discriminator
  • PDU protocol data unit
  • Program transaction identification field Program transaction identification field
  • message type field Program transaction identification field
  • the EPD field may not be encrypted, and the EPD field may occupy 8 bits, and the value of the 8 bits may be as shown in Table 2 below. If the value of the 8 bits is "00 1 1 1 1 1 0" or "0 1 0 0 1 1 1 0", it means that the NAS message includes the first distributed NAS message. Other values of the 8 bits may indicate that the NAS message includes the first centralized NAS message.
  • the access network device determining whether the NAS message includes the first centralized NAS message and the first distributed NAS message may also be determined based on newly added information elements in the message.
  • a new information element is included in the message, such as a NAS* information element or a dedicated NAS (dedicated NAS-message) information element
  • the above-mentioned message in the NAS message is considered to be the first distributed NAS message.
  • the first distributed NAS message may be a downlink direct transfer message (DL information transfer) or an uplink direct transfer message (UL information transfer).
  • DL information transfer downlink direct transfer message
  • UL information transfer uplink direct transfer message
  • the access network device receives configuration information, and establishes a non-access stratum channel between the access network device and the first network element according to the configuration information.
  • the configuration information may be directly sent by the AMF to the access network device, or may be forwarded by the second network element to the access network device through the first network element, which is not limited in this application.
  • the access network device may send a response message to the first network element, and the response message may also be sent by the first network element to the second network element. yuan.
  • the first network element may receive a security parameter update message, where the security parameter update message includes a new security parameter.
  • the terminal may update the security parameters, and send a security parameter update message to the AMF after the update, the AMF forwards the security parameter update message to the second network element, and the second network element may send the security parameter update to the first network element news.
  • the first network element can perform message processing according to the new security parameter in the security parameter update message.
  • the second network element may send a subscription message to the AMF, and the subscription message is used to instruct the AMF to send the security parameter update message to the second network element after detecting that the terminal has performed a security parameter update.
  • the first network element may retransmit the sent messages through the new security parameters.
  • the first network element may also receive a release message, where the release message is used to request the first network element to release the non-access stratum channel with the access network device.
  • the first network element may request the second network element to stop releasing resources after finishing the message processing. Or the external network element or the second network element actively requests the first network element to release resources.
  • the first network element receives the release message and releases the non-access stratum channel between the first network element and the access network device according to the release message, thereby saving power consumption of the first network element.
  • the access network device may also receive the release message, and release the non-access stratum channel with the first network element according to the release message.
  • the access network device may send an update request for requesting an update to the access network device to the AMF, and receive an update response message sent by the AMF.
  • the update response message includes configuration information, and the configuration information is used for Configure a non-access layer channel between the access network device and the first network element.
  • the terminal can complete the handover of the access network equipment through the two phases of the handover preparation phase and the handover execution phase.
  • the handover preparation phase is used to transfer the context information of the terminal to the new access network device
  • the handover execution phase is used to disconnect the terminal from the old access network device and access the new access network device.
  • the terminal After the terminal is connected to the new access network device, it can send an update request to the AMF.
  • the update request is used to request the AMF to switch to the new access network device.
  • the AMF sends the update request to the second network element.
  • the element sends an update response message to the AMF according to the update request, and the AMF sends the update response message to the new access network device.
  • the update response message includes the one used to configure the new access network device and the first network element.
  • the new access network device establishes a non-access stratum channel with the first network element according to the configuration information, so that in the scenario of replacing the access network device, the NAS message is offloaded, thereby improving processing efficiency.
  • the update request may carry the NL-2 related configuration of the new access network device, and the NL-2 related configuration includes the NL-2 transmission address, the terminal ID corresponding to the NL-2 interface, and so on.
  • this embodiment can be understood as when the access network device sends a change, the NSFd does not change.
  • the access network device may send a handover request for requesting handover to the access network device to the AMF, and receive a handover response message sent by the AMF.
  • the update response message includes configuration information, and the configuration information is used for To configure the non-access layer channel between the access network device and the third network element.
  • the NSFd when the access network device is changed, the NSFd changes. That is to say, the second network element determines that the NSFd needs to be replaced according to the handover request sent by the AMF request to switch to the new access network device, then the handover response message sent by the second network element to the AMF includes the configuration information for Configure the non-access stratum channel between the new access device and the new first network element (that is, the third network element).
  • FIG. 17 shows a message transmission system 1700 according to an embodiment of the present application.
  • the system 1700 includes an access network device 1710, a first network element 1720, and a third network element 1730.
  • the system 1700 may further include at least one of the second network element 1740, UE 1750, SMF 1760, and NSFd 1770.
  • the access network device 1710 is configured to send a second non-terminal related message to the first network element 1720 when the first message includes a first non-terminal related message, and/or when the first message includes a first terminal related message, Send the second terminal related message to the third network element 1730.
  • the access network device can divide the message into a non-terminal-related message and a terminal-related message according to whether it is related to the terminal, and then send it to different network elements for separate processing, thereby improving processing efficiency.
  • the first message may be a non-NAS message or a NAS message.
  • the second network element 1740 may be an NSFc.
  • the interface between the first network element 1720 and the access network device 1710 may be "N2-nonUE", and the interface between the access network device 1710 and the third network element 1730 may be N2-UE.
  • the SMF1760 is used for session management.
  • the first network element may select an SMF (for example, SMF1760) from multiple SMFs, and establish a connection with the SMF1760.
  • SMF1760 an SMF
  • the session information in the related message will be sent to the SMF for processing.
  • the third network element 1730 may further include a fifth network element, and the fifth network element is used to perform registration management and mobility management.
  • the fifth network element may be "AMF*".
  • the system 1700 includes a fifth network element, and the fifth network element is used to perform registration management and mobility management.
  • the fifth network element may be independent, that is, the functions of the original third network element are split, part of which is performed by the new third network element, and the other part is performed by the fifth network element.
  • the fifth network element is a part of the third network element, that is, the fifth network element is used to perform part of the functions of the third network element 1730, which is not limited in this application.
  • TNLA connection between the access network device and the first network element
  • TNLA connection between the access network device and the third network element
  • the access network device switches between different first network elements, or switches between different third network elements, it can be understood as performing TNLA switching, which is performed for the terminal and the access network device.
  • TNLA switching has lower power consumption overhead and shorter time delay, thereby reducing signaling overhead or service interruption.
  • the first network element and the third network element are deployed in the AMF.
  • the first network element 1720 and the third network element 1730 can be regarded as having part of the functions of the AMF in the traditional solution, or in other words, the traditional solution divides the AMF function into the first network element 1720 and the third network element. Yuan 1730 execution.
  • the first network element 1720 may be AMF-N2-common, and the AMF-N2-common is used to handle N2 interface management and non-terminal-related signaling processing.
  • the third network element 1730 may be AMF-N1N2, and the AMF-N1N2 is used to be responsible for terminal-related N2 signaling.
  • the first network element is inside the AMF, and the third network element may be outside the AMF.
  • the distance between the third network element and the access network device is such that the transmission delay of terminal-related messages between the two is less than or equal to a preset threshold, which can reduce the transmission delay of terminal-related messages.
  • the system 1700 may include multiple third network elements, and the first network element may be used to select a third network element from the multiple third network elements as the target third network element (for example, the third network element).
  • the network element 1730 may be the target third network element).
  • FIG. 18 shows a schematic flowchart of a method for message transmission according to an embodiment of the present application.
  • the access network device sends a second non-terminal-related message to the first network element.
  • the access network device may determine whether the first message includes the first non-terminal message, and if the first message includes the first non-terminal message, the first non-terminal message is parsed and repackaged to obtain the first non-terminal message. Two non-terminal messages, and sending the second non-terminal related messages to the first network element.
  • the access network device sends a second terminal-related message to the second network element.
  • the access network device parses and repackages the first terminal related message to obtain the second terminal related message, and transfers the second terminal related message Sent to the second network element.
  • the access network device can divide the message into non-terminal-related messages and terminal-related messages by whether they are related to the terminal, and then send them to different network elements for processing, thereby improving processing efficiency.
  • the access network device may only perform step 1801, or only perform step 1802, or may perform step 1801 and step 1802.
  • the access network device receives first configuration information, and establishes a TNLA connection between the access network device and the first network element for the terminal according to the first configuration information.
  • the first configuration information may be used to configure the TNLA connection between the first network element and the access network device for the terminal, so that for the terminal and the access network device, the TNLA handover is relative to The power consumption overhead for switching the signaling connection is low, and the time delay is short, thereby reducing signaling overhead or service interruption.
  • the first configuration information includes TNLA information of the first network element, where the TNLA information of the first network element includes address information of the first network element, and distribution corresponding to the first network element.
  • the second configuration information can be used to configure the TNLA connection between the third network element and the access network device for the terminal, so that for the terminal and the access network device, the TNLA handover is relative to The power consumption overhead for switching the signaling connection is low, and the time delay is short, thereby reducing signaling overhead or service interruption.
  • first configuration information and the second configuration information may be the same configuration information, or carried in the same message, or may be independent, which is not limited in this application.
  • the second configuration information includes TNLA information of the third network element
  • the TNLA information of the third network element includes address information of the third network element, and information about the distributed core network corresponding to the third network element.
  • Identification information, slice information that can be used by the third network element, information about the geographic area to which the third network element belongs, list information of the tracking area to which the third network element belongs, and information corresponding to the third network element At least one of the NSFd type supported by the distributed core network and the capacity supported by the distributed core network corresponding to the third network element.
  • the first network element may also send a registration request to the NSF or a service communication framework (framework), where the registration request is used to request access to the network.
  • a service communication framework framework
  • the first network element may send a registration request to the NRF or the service communication framework to request access to the network, which can process the message sent by the access network device.
  • the NRF or the service communication framework may also send a response message to the first network element, and the response message may include the identifier of the second network element.
  • the registration request may include the geographic location of the first network element, tracking area (TA), area ID, subnet ID, URL constructed by location, and so on.
  • TA tracking area
  • area ID area ID
  • subnet ID URL constructed by location, and so on.
  • the third network element may also send a registration request to the NRF or the service communication framework, and the registration request is used to request access to the network.
  • the second network element 1740 and NSFd 1770 may also access the network by sending a registration request to the NRF or service communication framework.
  • the third network element may be a target third network element selected by the first network element from multiple network elements.
  • the first network element may select the target third network element from multiple network elements according to the slice selection information of the terminal, the public land mobile network (PLMN) ID, the initial NAS request, and the like. In this way, the first network element can communicate with the target third network element through the NSF or service communication framework.
  • PLMN public land mobile network
  • an interface may also exist between the first network element and the third network element, for example, an NF discovery interface.
  • the third network element may obtain security information from the AUSF, and the security information may include security parameters and subscription information of the terminal.
  • the third network element can invoke the AUSF service to initiate terminal authentication and security procedures, and obtain security parameters from AUSF, so as to improve the security performance of the third network element in processing messages.
  • the third network element can also be associated with multiple NFs, and different NFs can have different processing functions, so that the third network element can send the terminal-related information sent by the access network device to the corresponding NF for processing , Thereby improving processing efficiency.
  • the third network element may store the routing relationship with each NF and the processing function of each NF.
  • the third network element may also include a fifth network element, that is, part of the functions of the third network element is performed by the fifth network element.
  • the fifth network element can be used for registration management and mobility management, that is, the fifth network element can be used for processing registration information and mobility information.
  • the third network element may send update information to the fourth network element, where the update information includes context information of the terminal, and the fourth network element is used to process terminal-related messages.
  • the third network element and the fourth network element may be different network elements of the same kind, for example, the third network element is an old (old) AMF-N1N2, and the fourth network element is a new (new) AMF-N1N2 .
  • the terminal can perform AMF-N1N2 handover due to movement or due to different services.
  • old AMF-N1N2 can select an appropriate AMF-N1N2 (that is, newAMF-N1N2) based on the reason for the current AMF-N1N2 change, and synchronize the context information of the terminal to newAMF-N1N2.
  • the third network element may also receive a release message from the fourth network element, where the release message is used to instruct the third network element to release the TNLA connection with the access network device for the terminal.
  • the fourth network element confirms that the terminal has completed the handover from the third network element to the fourth network element, and then sends a release message to the third network element, and the third network element releases the third network element and the third network element according to the release message.
  • the methods and operations implemented by the terminal can also be implemented by components (such as chips or circuits) that can be used in the terminal, and the methods and operations implemented by the access network device can also be implemented by It can be used for the implementation of components (such as chips or circuits) of access network equipment.
  • the foregoing method embodiments are described from the perspective of the interaction of various network elements. From these descriptions, the method steps executed by a single network element and related descriptions can be directly and without doubt. To repeat.
  • each network element such as a transmitting end device or a receiving end device, includes hardware structures and/or software modules corresponding to each function in order to realize the above-mentioned functions.
  • this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiments of the present application can divide the transmitting end device or the receiving end device into functional modules according to the foregoing method examples.
  • each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation. The following is an example of dividing each function module corresponding to each function.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • FIG. 19 shows a schematic block diagram of a communication device 1900 according to an embodiment of the present application.
  • the device 1900 may correspond to the proxy server or a chip in the proxy server in the embodiment shown in FIG. 6 or FIG. 12, and may have any function of the proxy server in the method.
  • the device 1900 includes a transceiver module 1910.
  • the device 1900 further includes a processing module 1920.
  • the transceiver module 1910 is configured to receive the first non-access stratum NAS message of the terminal from the access network device;
  • the transceiver module 1910 is further configured to send a second centralized NAS message to the access and mobility management function AMF when the first NAS message includes a centralized NAS message, and/or when the first NAS message includes a distributed In the case of the NAS message, the second distributed NAS message is sent to the distributed non-access stratum service function NSFd.
  • the transceiver module 1910 is further configured to receive first configuration information from the AMF, where the first configuration information is used to configure a transport layer network-associated TNLA connection between the proxy server and the AMF for the terminal; the The processing module 1920 is configured to establish a TNLA connection for the terminal between the proxy server and the AMF according to the first configuration information.
  • the processing module 1920 is configured to decrypt the first NAS message according to the security parameters.
  • the transceiver module 1910 is further configured to send a request message to the AMF, where the request message is used to request the establishment of a TNLA connection between the proxy server and the access network device for the terminal.
  • the transceiver module 1910 is further configured to receive a release message from the AMF, where the release message is used to release the TNLA connection; the processing module 1920 is configured to release the TNLA connection for the terminal according to the release message.
  • FIG. 20 shows a communication device 2000 provided by an embodiment of the present application.
  • the device 2000 may be the proxy server in the embodiment shown in FIG. 6 or FIG. 12.
  • the device can adopt the hardware architecture shown in FIG. 20.
  • the device may include a processor 2010 and a transceiver 2020.
  • the device may also include a memory 2030.
  • the processor 2010, the transceiver 2020, and the memory 2030 communicate with each other through an internal connection path.
  • the related functions implemented by the processing module 1920 in FIG. 19 may be implemented by the processor 2010, and the related functions implemented by the transceiver module 1910 may be implemented by the processor 2010 controlling the transceiver 2020.
  • the processor 2010 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more It is an integrated circuit that implements the technical solutions of the embodiments of the present application.
  • a processor may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as base stations, terminal equipment, or chips), execute software programs, and process data in the software programs.
  • the processor 2010 may include one or more processors, such as one or more central processing units (CPU).
  • processors such as one or more central processing units (CPU).
  • CPU central processing units
  • the processor may be a single processor.
  • the core CPU can also be a multi-core CPU.
  • the transceiver 2020 is used to send and receive data and/or signals, and to receive data and/or signals.
  • the transceiver may include a transmitter and a receiver, the transmitter is used to send data and/or signals, and the receiver is used to receive data and/or signals.
  • the memory 2030 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable memory (erasable read only memory, EPROM), read-only memory A compact disc (read-only memory, CD-ROM), the memory 2040 is used to store related instructions and data.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable programmable memory
  • CD-ROM compact disc
  • the memory 2040 is used to store related instructions and data.
  • the memory 2030 is used to store program codes and data of the terminal device, and may be a separate device or integrated in the processor 2010.
  • the processor 2010 is used to control the transceiver to perform information transmission with the terminal device.
  • the processor 2010 is used to control the transceiver to perform information transmission with the terminal device.
  • the transceiver to perform information transmission with the terminal device.
  • the apparatus 2000 may further include an output device and an input device.
  • the output device communicates with the processor 2010 and can display information in a variety of ways.
  • the output device can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc.
  • the input device communicates with the processor and can receive user input in a variety of ways.
  • the input device can be a mouse, a keyboard, a touch screen device, or a sensor device.
  • FIG. 20 only shows a simplified design of the communication device.
  • the device may also contain other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement this application are protected by this application. Within range.
  • the device 2000 may be a chip, for example, a communication chip that can be used in a terminal device to implement related functions of the processor 2010 in the terminal device.
  • the chip can be a field programmable gate array, a dedicated integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions.
  • the chip may optionally include one or more memories for storing program codes. When the codes are executed, the processor realizes corresponding functions.
  • the embodiments of the present application also provide a device, which may be a terminal device or a circuit.
  • the device can be used to perform the actions performed by the terminal device in the foregoing method embodiments.
  • FIG. 21 shows a schematic block diagram of a communication device 2100 according to an embodiment of the present application.
  • the apparatus 1200 may correspond to the access network device or the chip in the access network device in the embodiment shown in FIG. 6 or FIG. 12, and may have any function of the access network device in the method.
  • the device 2100 includes a transceiver module 2110.
  • the device 2100 further includes a processing module 2120.
  • the transceiver module 2110 is used to receive the first NAS message from the terminal;
  • the transceiver module 2110 is further configured to send the first NAS message to the proxy server, so that the proxy server sends the second centralized NAS message to the AMF when the first NAS message includes the first centralized NAS message, and/ Or, the first NAS message includes the first distributed NAS message to send a second distributed NAS message to the distributed non-access stratum service function NSFd.
  • the transceiver module 2110 is further configured to receive second configuration information from the AMF, where the second configuration information is used to configure the TNLA connection between the access network device and the proxy server for the terminal; the processing module , Used to establish a TNLA for the terminal between the access network device and the proxy server according to the second configuration information.
  • the transceiver module 2110 is further configured to receive second configuration information from the AMF, where the second configuration information is used to configure the TNLA connection between the access network device and the AMF for the terminal;
  • the processing module 2120 is configured to establish a TNLA between the access network device and the AMF for the terminal according to the second configuration information.
  • the second configuration information includes TNLA information of the proxy server and/or TNLA information of the AMF; wherein, the TNLA information of the proxy server includes address information of the proxy server, and distribution corresponding to the proxy server
  • the identification information of the distributed core network, the slice information that the proxy server can use, the information of the geographical area to which the proxy server belongs, the list information of the tracking area to which the proxy server belongs, and the distributed core network corresponding to the proxy server At least one of the supported NSFd type and the capacity supported by the distributed core network corresponding to the proxy server;
  • the TNLA information of the AMF includes the address information of the AMF and the identification information of the distributed core network corresponding to the AMF ,
  • the slice information that the AMF can use the information of the geographic area to which the AMF belongs, the list information of the tracking area to which the AMF belongs, the NSFd type supported by the distributed core network corresponding to the AMF, and the corresponding AMF At least one of the capacities supported by the distributed core network.
  • FIG. 22 shows a communication device 2200 provided in an embodiment of the present application.
  • the device 2200 may be the access network device or the chip in the access network device in the embodiment shown in FIG. 6 or FIG. 12.
  • the device can adopt the hardware architecture shown in Figure 22.
  • the device may include a processor 2210 and a transceiver 2220.
  • the device may also include a memory 2230.
  • the processor 2210, the transceiver 2220, and the memory 2230 communicate with each other through an internal connection path.
  • the related functions implemented by the processing module 2120 in FIG. 22 may be implemented by the processor 2210, and the related functions implemented by the transceiver module 2110 may be implemented by the processor 2210 controlling the transceiver 2220.
  • the processor 2210 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more It is an integrated circuit that implements the technical solutions of the embodiments of the present application.
  • a processor may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as base stations, terminal equipment, or chips), execute software programs, and process data in the software programs.
  • the processor 2210 may include one or more processors, for example, include one or more central processing units (central processing unit, CPU).
  • CPU central processing unit
  • the CPU may be a single processor.
  • the core CPU can also be a multi-core CPU.
  • the transceiver 2220 is used to send and receive data and/or signals, and to receive data and/or signals.
  • the transceiver may include a transmitter and a receiver, the transmitter is used to send data and/or signals, and the receiver is used to receive data and/or signals.
  • the memory 2230 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable memory (erasable read only memory, EPROM), and read-only memory.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable read only memory
  • read-only memory erasable read only memory
  • CD-ROM compact disc
  • the memory 2230 is used to store program codes and data of the terminal device, and may be a separate device or integrated in the processor 2210.
  • the processor 2210 is configured to control the transceiver and the terminal device to perform information transmission.
  • the processor 2210 is configured to control the transceiver and the terminal device to perform information transmission.
  • the apparatus 2200 may further include an output device and an input device.
  • the output device communicates with the processor 2210 and can display information in a variety of ways.
  • the output device can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc.
  • the input device communicates with the processor and can receive user input in a variety of ways.
  • the input device can be a mouse, a keyboard, a touch screen device, or a sensor device.
  • FIG. 22 only shows a simplified design of the communication device.
  • the device may also contain other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement this application are protected by this application. Within range.
  • the apparatus 2200 may be a chip, for example, a communication chip that can be used in a terminal device to implement related functions of the processor 2210 in the terminal device.
  • the chip can be a field programmable gate array, a dedicated integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions.
  • the chip may optionally include one or more memories for storing program codes. When the codes are executed, the processor realizes corresponding functions.
  • the embodiments of the present application also provide a device, which may be a terminal device or a circuit.
  • the device can be used to perform the actions performed by the terminal device in the foregoing method embodiments.
  • FIG. 23 shows a schematic block diagram of a communication device 2300 according to an embodiment of the present application.
  • the device 2300 may correspond to the AMF or the chip in the AMF in the embodiment shown in FIG. 6 or FIG. 12, and may have any function of the AMF in the embodiment shown in FIG. 6 or FIG.
  • the device 2300 includes a processing module 2310 and a transceiver module 2320.
  • the processing module 2310 is used to obtain second configuration information, which is used to configure the transport layer network association TNLA between the access network device and the AMF for the terminal, and/or is used to configure the access network device TNLA for the terminal with the proxy server;
  • the transceiver module 2320 is configured to send the second configuration information to the access network device.
  • the transceiver module 2320 is further configured to receive the second configuration information from an operation and maintenance OAM network management system; or the transceiver module 2320 is further configured to receive the second configuration information from a second network element.
  • the second configuration information includes TNLA information of the proxy server and/or TNLA information of the AMF; wherein, the TNLA information of the proxy server includes address information of the proxy server, and distribution corresponding to the proxy server
  • the identification information of the distributed core network, the slice information that the proxy server can use, the information of the geographical area to which the proxy server belongs, the list information of the tracking area to which the proxy server belongs, and the distributed core network corresponding to the proxy server At least one of the supported NSFd type and the capacity supported by the distributed core network corresponding to the proxy server;
  • the TNLA information of the AMF includes the address information of the AMF and the identification information of the distributed core network corresponding to the AMF ,
  • the slice information that the AMF can use the information of the geographic area to which the AMF belongs, the list information of the tracking area to which the AMF belongs, the NSFd type supported by the distributed core network corresponding to the AMF, and the corresponding AMF At least one of the capacities supported by the distributed core network.
  • the transceiver module 2320 is further configured to send first configuration information to the proxy server, where the first configuration information is used to configure the TNLA connection between the proxy server and the AMF for the terminal.
  • the transceiver module 2320 is further configured to receive a service request, where the service request includes the delay requirement of the service;
  • the processing module 2310 is also used to determine the proxy server according to the delay requirement.
  • the transceiver module 2320 is further configured to receive a request message from the proxy server, where the request message is used to request the establishment of a TNLA connection between the proxy server and the access network device for the terminal; the transceiver module 2320 , Specifically used to: send the second configuration information according to the request message.
  • the transceiver module 2320 is further configured to send a release message to the proxy server, where the release message is used to instruct the proxy server to release the TNLA connection for the terminal.
  • the transceiver module 2320 is further configured to receive a release request from the second network element, where the release request is used to request the release of the TNLA connection for the terminal.
  • FIG. 24 shows a communication device 2400 provided by an embodiment of the present application.
  • the device 2400 may be the terminal device described in FIG. 5 or FIG. 8.
  • the device can adopt the hardware architecture shown in Figure 24.
  • the device may include a processor 2410 and a transceiver 2420.
  • the device may also include a memory 2430.
  • the processor 2410, the transceiver 2420, and the memory 2430 communicate with each other through an internal connection path.
  • the related functions implemented by the processing module 2310 in FIG. 23 may be implemented by the processor 2410, and the related functions implemented by the transceiver module 2320 may be implemented by the processor 2410 controlling the transceiver 2420.
  • the processor 2410 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more It is an integrated circuit implementing the technical solutions of the embodiments of the present application.
  • a processor may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as base stations, terminal equipment, or chips), execute software programs, and process data in the software programs.
  • the processor 2410 may include one or more processors, such as one or more central processing units (CPU).
  • processors such as one or more central processing units (CPU).
  • CPU central processing units
  • the CPU may be a single processor.
  • the core CPU can also be a multi-core CPU.
  • the transceiver 2420 is used to send and receive data and/or signals, and to receive data and/or signals.
  • the transceiver may include a transmitter and a receiver, the transmitter is used to send data and/or signals, and the receiver is used to receive data and/or signals.
  • the memory 2430 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable memory (erasable programmable memory, EPROM), and read-only memory.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable programmable memory
  • read-only memory erasable programmable memory
  • a compact disc read-only memory, CD-ROM.
  • the memory 2430 is used to store related instructions and data.
  • the memory 2430 is used to store program codes and data of the terminal device, and may be a separate device or integrated in the processor 2410.
  • the processor 2410 is configured to control the transceiver and the terminal device to perform information transmission.
  • the processor 2410 is configured to control the transceiver and the terminal device to perform information transmission.
  • the apparatus 2400 may further include an output device and an input device.
  • the output device communicates with the processor 2410 and can display information in a variety of ways.
  • the output device can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc.
  • the input device communicates with the processor 601 and can receive user input in a variety of ways.
  • the input device can be a mouse, a keyboard, a touch screen device, or a sensor device.
  • FIG. 24 only shows a simplified design of the communication device.
  • the device may also contain other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement this application are protected by this application. Within range.
  • the device 2400 may be a chip, for example, a communication chip that can be used in a terminal device to implement related functions of the processor 2410 in the terminal device.
  • the chip can be a field programmable gate array, a dedicated integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions.
  • the chip may optionally include one or more memories for storing program codes. When the codes are executed, the processor realizes corresponding functions.
  • the embodiments of the present application also provide a device, which may be a terminal device or a circuit.
  • the device can be used to perform the actions performed by the terminal device in the foregoing method embodiments.
  • the access network device may be as shown in FIG. 25, for example, the device 250 is a base station.
  • the base station can be applied to the system shown in FIG. 1 to perform the function of (R)AN in the above method embodiment.
  • the base station 250 may include one or more DU 2501 and one or more CU 2502.
  • CU2502 can communicate with the next-generation core network (NG core, NC).
  • the DU 2501 may include at least one antenna 25011, at least one radio frequency unit 25012, at least one processor 25013, and at least one memory 25014.
  • the DU 2501 part is mainly used for the transmission and reception of radio frequency signals, the conversion of radio frequency signals and baseband signals, and part of baseband processing.
  • the CU2502 may include at least one processor 25022 and at least one memory 25021.
  • CU2502 and DU2501 can communicate through interfaces, where the control plane interface can be Fs-C, such as F1-C, and the user plane interface can be Fs-U, such as F1-U.
  • the control plane interface can be Fs-C, such as F1-C
  • the user plane interface can be Fs-U, such as F1-U.
  • the CU 2502 part is mainly used for baseband processing, control of base stations, and so on.
  • the DU 2501 and the CU 2502 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the CU 2502 is the control center of the base station, which may also be called a processing unit, and is mainly used to complete baseband processing functions.
  • the CU 2502 may be used to control the base station to execute the operation procedure of the access network device in the foregoing method embodiment.
  • the baseband processing on the CU and DU can be divided according to the protocol layer of the wireless network, for example, the packet data convergence protocol (PDCP) layer and the functions of the above protocol layers are set in the CU, the protocol layer below PDCP, For example, functions such as the radio link control (RLC) layer and the medium access control (MAC) layer are set in the DU.
  • CU implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions
  • DU implements radio link control (radio link control, RLC), MAC, and physical functions.
  • the function of the (physical, PHY) layer is the packet data convergence protocol (PDCP) layer and the functions of the above protocol layers are set in the CU, the protocol layer below PDCP.
  • functions such as the radio link control (RLC) layer and the medium access control (MAC) layer are set in the DU.
  • RRC radio resource control
  • packet data convergence protocol packet data convergence protocol
  • MAC medium access control
  • the base station 250 may include one or more radio frequency units (RU), one or more DUs, and one or more CUs.
  • the DU may include at least one processor 25013 and at least one memory 25014
  • the RU may include at least one antenna 25011 and at least one radio frequency unit 25012
  • the CU may include at least one processor 25022 and at least one memory 25021.
  • the CU2502 can be composed of one or more single boards, and multiple single boards can jointly support a wireless access network with a single access indication (such as a 5G network), and can also support wireless access networks of different access standards.
  • Access network (such as LTE network, 5G network or other networks).
  • the memory 25021 and the processor 25022 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the DU2501 can be composed of one or more single boards, and multiple single boards can jointly support a wireless access network with a single access indication (such as a 5G network), or can respectively support wireless access networks with different access standards (such as LTE network, 5G network or other network).
  • the memory 25014 and the processor 25013 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • Programming logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous link dynamic random access memory synchronous link DRAM, SLDRAM
  • direct memory bus random access memory direct rambus RAM, DR RAM
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • component used in this specification are used to denote computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution.
  • the component may be, but is not limited to, a process, a processor, an object, an executable file, an execution thread, a program, and/or a computer running on a processor.
  • the application running on the computing device and the computing device can be components.
  • One or more components may reside in processes and/or threads of execution, and components may be located on one computer and/or distributed among two or more computers.
  • these components can be executed from various computer readable media having various data structures stored thereon.
  • the component can be based on, for example, a signal having one or more data packets (e.g. data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through a signal) Communicate through local and/or remote processes.
  • a signal having one or more data packets (e.g. data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through a signal) Communicate through local and/or remote processes.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • 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, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un dispositif et un système de transmission de message de strate de non-accès (NAS). Le procédé comprend les étapes suivantes : un serveur mandataire reçoit un premier message NAS d'un terminal provenant d'un appareil de réseau d'accès, puis détermine si le premier message NAS comprend un message NAS centralisé ou un message NAS distribué ; si le premier message NAS comprend un premier message NAS centralisé, le serveur mandataire envoie un second message NAS centralisé à une AMF ; et si le premier message NAS comprend un premier message NAS distribué, le serveur mandataire envoie un second message NAS distribué à une fonction de service de strate de non-accès distribuée (NSFd). En d'autres termes, dans des modes de réalisation de l'invention, le serveur mandataire permet d'envoyer séparément un message NAS distribué et un message NAS centralisé à différents éléments de réseau de traitement en vue d'être traités, c.-à-d. de diviser les messages NAS en de multiples flux à des fins de traitement, ce qui permet d'améliorer l'efficacité de traitement.
PCT/CN2020/116675 2019-09-26 2020-09-22 Procédé, dispositif et système de transmission de message de strate de non-accès WO2021057692A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910917615.3A CN112565324B (zh) 2019-09-26 2019-09-26 非接入层消息传输的方法、装置和系统
CN201910917615.3 2019-09-26

Publications (1)

Publication Number Publication Date
WO2021057692A1 true WO2021057692A1 (fr) 2021-04-01

Family

ID=75029793

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/116675 WO2021057692A1 (fr) 2019-09-26 2020-09-22 Procédé, dispositif et système de transmission de message de strate de non-accès

Country Status (2)

Country Link
CN (1) CN112565324B (fr)
WO (1) WO2021057692A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210297896A1 (en) * 2020-03-20 2021-09-23 Nokia Technologies Oy Wireless communication system
WO2023216828A1 (fr) * 2022-05-12 2023-11-16 华为技术有限公司 Procédé et appareil de communication

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023087328A1 (fr) * 2021-11-22 2023-05-25 Oppo广东移动通信有限公司 Procédé et appareil de transfert, dispositif, et support d'enregistrement
WO2023224915A1 (fr) * 2022-05-16 2023-11-23 Intel Corporation Sécurité pour protocole de strates de non-accès distribuées dans un système mobile
CN117377051A (zh) * 2022-06-30 2024-01-09 华为技术有限公司 数据传输的方法和装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108541032A (zh) * 2017-09-22 2018-09-14 中兴通讯股份有限公司 无线基站分离架构下的通信方法、功能实体及无线基站
WO2018174427A1 (fr) * 2017-03-24 2018-09-27 Samsung Electronics Co., Ltd. Procédé et dispositif de commande d'un état de transmission de données
WO2018201921A1 (fr) * 2017-05-05 2018-11-08 华为技术有限公司 Procédé et dispositif de communication

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101094065B (zh) * 2006-06-23 2011-09-28 华为技术有限公司 无线通信网络中的密钥分发方法和系统
CN101364934B (zh) * 2007-08-10 2011-06-01 华为技术有限公司 非接入层消息在切换中的处理方法和装置
CN101335924A (zh) * 2008-08-05 2008-12-31 中兴通讯股份有限公司 非接入层消息传输方法、装置及系统
EP2364039A1 (fr) * 2010-03-03 2011-09-07 Research In Motion Limited Procédé et appareil pour signaler les capacités de strates d'accès de stations mobiles pour des sessions de transfert de données
US8989719B2 (en) * 2011-12-20 2015-03-24 Verizon Patent And Licensing Inc. Non-access stratum (NAS) transparent messaging
CN105933914B (zh) * 2016-04-19 2019-03-29 国网浙江省电力公司信息通信分公司 分布式lte网络架构系统
CN108616995B (zh) * 2016-12-30 2021-07-30 中国电信股份有限公司 移动网业务适配方法、设备、终端、基站和移动通信系统
CN108738077B (zh) * 2017-04-25 2023-09-01 华为技术有限公司 一种负荷迁移的方法、装置和系统
CN113438695B (zh) * 2017-12-25 2022-06-21 大唐移动通信设备有限公司 一种会话建立的方法及装置
CN109996346B (zh) * 2017-12-29 2021-07-16 华为技术有限公司 会话建立方法、设备及系统
US10681648B2 (en) * 2018-01-10 2020-06-09 Comcast Cable Communications, Llc Power control for channel state information

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018174427A1 (fr) * 2017-03-24 2018-09-27 Samsung Electronics Co., Ltd. Procédé et dispositif de commande d'un état de transmission de données
WO2018201921A1 (fr) * 2017-05-05 2018-11-08 华为技术有限公司 Procédé et dispositif de communication
CN108541032A (zh) * 2017-09-22 2018-09-14 中兴通讯股份有限公司 无线基站分离架构下的通信方法、功能实体及无线基站

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ERICSSON, SAMSUNG: "Introducing of UP CIoT 5GS Optimisation capability", 3GPP DRAFT; S2-1908437_WAS8407_23501_UP CIOT 5GS OPTIMISATION CAPABILITY_PA4, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. Sapporo, Japan; 20190624 - 20190628, 27 June 2019 (2019-06-27), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051749735 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210297896A1 (en) * 2020-03-20 2021-09-23 Nokia Technologies Oy Wireless communication system
US11765618B2 (en) * 2020-03-20 2023-09-19 Nokia Technologies Oy Wireless communication system
WO2023216828A1 (fr) * 2022-05-12 2023-11-16 华为技术有限公司 Procédé et appareil de communication

Also Published As

Publication number Publication date
CN112565324B (zh) 2022-04-05
CN112565324A (zh) 2021-03-26

Similar Documents

Publication Publication Date Title
US11528770B2 (en) Session management method, apparatus, and system
WO2021057692A1 (fr) Procédé, dispositif et système de transmission de message de strate de non-accès
US11477689B2 (en) Method and apparatus for establishing guaranteed bit rate (GBR) quality of service (QoS) flow in session
US20240179118A1 (en) Edge Service Obtaining Method and Apparatus
US11259161B2 (en) Enhancements for radio access capability signaling (RACS)
US20210329541A1 (en) Determining a type of network connection from an os-specific connection capability
US11743934B2 (en) Establishing QoS flows over non-3GPP access
US11489760B2 (en) Multicast group creation method, multicast group joining method, and apparatus
US11310658B2 (en) Method and apparatus for determining status of terminal device, and device
US20220141664A1 (en) Data transmission method and apparatus in network slice architecture
US20230262793A1 (en) Method for communication between user terminal and network, and terminal, network device and apparatus
US20200170073A1 (en) Method for Repeatedly Transmitting Data and Device
US20220272577A1 (en) Communication method and communication apparatus
JP6889150B2 (ja) 基地局及び送信方法
US10123204B2 (en) Splitting method, base station, and user equipment
TW202015440A (zh) 無線通訊的方法和設備
WO2021227600A1 (fr) Procédé de commande de tranche de réseau et appareil de communication
WO2019090770A1 (fr) Procédé de détermination de type de réseau central pendant un processus de transfert intercellulaire, dispositif terminal, dispositif de réseau d'accès et dispositif de réseau central
US20230180157A1 (en) Apparatus, Method and Computer Program
EP4401464A1 (fr) Procédé et appareil de communication
TW202015482A (zh) 通訊方法和設備
WO2020142884A1 (fr) Procédé et dispositif de commutation entre trajets de transmission
WO2022206514A1 (fr) Procédé et appareil de communication vocale
WO2020224582A1 (fr) Procédé et dispositif de mise à jour de tranche de réseau
WO2024000191A1 (fr) Architecture de réseau et conception sans état pour un réseau cellulaire

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20869278

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20869278

Country of ref document: EP

Kind code of ref document: A1