WO2024146475A1 - 通信方法、装置和系统 - Google Patents
通信方法、装置和系统 Download PDFInfo
- Publication number
- WO2024146475A1 WO2024146475A1 PCT/CN2023/143433 CN2023143433W WO2024146475A1 WO 2024146475 A1 WO2024146475 A1 WO 2024146475A1 CN 2023143433 W CN2023143433 W CN 2023143433W WO 2024146475 A1 WO2024146475 A1 WO 2024146475A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- network element
- terminal device
- address
- smf
- nef
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
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
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0894—Policy-based network configuration management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/5003—Managing SLA; Interaction between SLA and QoS
- H04L41/5019—Ensuring fulfilment of SLA
Definitions
- the network scenarios include non-roaming scenarios, local breakout (LBO) roaming scenarios, and home routed (HR) roaming scenarios.
- the AF network element sends a request to the SMF network element in the serving public land mobile network (PLMN) through the network exposure function (NEF) network element and the policy control function (PCF) network element in the serving PLMN.
- PLMN public land mobile network
- NEF network exposure function
- PCF policy control function
- the HR roaming scenario there is no PCF network element in the serving PLMN that can be used to forward the request from the AF network element.
- the service quality of the service cannot be guaranteed.
- an embodiment of the present application provides a communication method, which can be applied to an SMF network element, a chip in an SMF network element, or a logic module or software that can implement all or part of the functions of an SMF network element.
- the following description takes an SMF network element as an example.
- the method includes: the SMF network element sends the address of a terminal device and the address of an SMF network element to a centralized network element; the centralized network element is used to provide the address of the SMF network element to the NEF network element according to the address of the terminal device; the SMF network element receives a first message from an AF network element forwarded by the NEF network element; the first information is used to indicate a service requirement related to a session of a terminal device.
- the SMF network element can store the address of the terminal device and the address of the SMF network element in the centralized network element, so that the NEF network element can obtain the address of the SMF network element from the centralized network element, so that the NEF network element can send the first information to the SMF network element, and the first information can be transmitted from the AF network element to the SMF network element, so that the SMF network element can provide session services for the terminal device based on the first information, thereby ensuring the quality of business services.
- the first information can be sent directly from the NEF network element to the SMF network element without being sent from the NEF network element to the SMF network element through the PCF network element, so that the first information can be transmitted from the AF network element to the SMF network element in a network containing HR roaming scenarios, thereby improving the quality of business services in networks containing HR roaming scenarios.
- the NEF network element is used to obtain the address of the SMF network element from the centralized network element according to the address of the terminal device, and forward the first information to the SMF network element.
- the method further includes: the SMF network element receives the address of the terminal device from the AF network element forwarded by the NEF network element.
- the SMF network element receives the address of the terminal device from the AF network element forwarded by the NEF network element. This implementation enables the SMF network element to know the terminal device that the AF network element wants the SMF network element to serve, so that after receiving the first information, the SMF network element can provide session services for the terminal device based on the first information to ensure the service quality.
- the centralized network element is used to store the correspondence between the address of the terminal device and the address of the SMF network element. This implementation enables the centralized network element to determine the address of the SMF network element corresponding to the address of the terminal device according to the address of the terminal device, thereby providing the address of the SMF network element to the NEF network element.
- the terminal device is in HR roaming state; the SMF network element sends the address of the terminal device and the address of the SMF network element to the centralized network element, including: according to the HR roaming state of the terminal device, the SMF network element sends the address of the terminal device and the address of the SMF network element to the centralized network element.
- This implementation is conducive to enabling the NEF network element to query the address of the SMF network element when the terminal device is in HR roaming state, so that the first information can be sent to the SMF network element, which is conducive to improving the service quality of the business in the network containing the HR roaming scenario.
- the method also includes: the SMF network element determines that the terminal device is in HR roaming state.
- the method further includes: the SMF network element receives the address from the access and mobility management function (AMF) network element; The address of the second SMF network element; the second SMF network element is used to provide session services for the terminal device. That is to say, the SMF network element receives the address of the second SMF network element from the AMF network element as a trigger condition for the SMF network element to execute the operation of sending the address of the terminal device and the address of the SMF network element to the centralized network element.
- AMF access and mobility management function
- the SMF network element receives the address of the second SMF network element from the AMF network element, which can indicate that the terminal device is in the HR roaming state.
- This implementation method is conducive to enabling the NEF network element to query the address of the SMF network element when the terminal device is in the HR roaming state, so that the first information can be sent to the SMF network element, which is conducive to improving the business service quality in the network including the HR roaming scenario.
- the method further includes: the SMF network element obtains the address of the terminal device from the second SMF network element. This method enables the SMF network element to obtain the address of the terminal device to be sent to the centralized network element.
- the SMF network element and the centralized network element belong to the same PLMN.
- the method further includes: the SMF network element sends the first information to a second SMF network element, the second SMF network element and the SMF network element belong to a different PLMN, and the second SMF network element is used to provide session services for the terminal device.
- the NEF network element can query the address of the SMF network element from the centralized network element, so that the first information can be transmitted from the AF network element to the SMF network element via the NEF network element, so that the SMF network element can provide session services for the terminal device based on the first information, thereby ensuring the quality of business services.
- the first information can be sent directly from the NEF network element to the SMF network element without being sent from the NEF network element to the SMF network element through the PCF network element, thereby achieving the first information being transmitted from the AF network element to the SMF network element in a network containing HR roaming scenarios, thereby improving the quality of business services in networks containing HR roaming scenarios.
- the method before the NEF network element queries the centralized network element for the address of the SMF network element based on the address of the terminal device, the method further includes: the NEF network element determines that the terminal device is in the HR roaming state. That is, the NEF network element determines that the terminal device is in the HR roaming state as a trigger condition for the NEF network element to query the centralized network element for the address of the SMF network element based on the address of the terminal device.
- the SMF network element may store the address of the SMF network element in the centralized network element only when the terminal device is in the HR roaming state, in this case, when the terminal device is in a state other than the HR roaming state, the NEF network element cannot query the address of the SMF network element from the centralized network element.
- This implementation enables the NEF network element to not perform the operation of querying the centralized network element for the address of the SMF network element when the terminal device is in a state other than the HR roaming state, thereby reducing signaling overhead.
- the NEF network element sends the first information to the SMF network element, including: the NEF network element sends the first information to the SMF network element through the PCF network element, wherein the terminal device is in a non-roaming state, or the terminal device is in an LBO roaming state, or the terminal device supports the LBO roaming type.
- the NEF network element sends the first information to the SMF network element, including: the NEF network element sends the first information to the SMF network element through a third NEF network element, a second PCF network element, and a second SMF network element, wherein the terminal device is in HR roaming state, or the terminal device supports HR roaming type.
- the NEF network element sends the first information to the SMF network element, including: the NEF network element sends the first information to the SMF network element through the PCF network element, and sends the first information to the SMF network element through a third NEF network element, a second PCF network element, and a second SMF network element, wherein the terminal device supports LBO roaming type and HR roaming type.
- the transmission path provided by the communication method includes: when the terminal device is in the HR roaming state or the roaming type supported by the terminal device includes the HR roaming type, the path for the first information to be transmitted from the NEF network element to the SMF network element is conducive to realizing that the first information can be transmitted from the AF network element to the SMF network element in a network containing HR roaming scenarios, thereby improving the service quality of the business in the network containing HR roaming scenarios.
- the address of the terminal device in a non-roaming state or an LBO roaming state belongs to the address segment corresponding to the first PLMN; or, the address of the terminal device in an HR roaming state does not belong to the address segment corresponding to the first PLMN.
- the method further includes: if the address of the terminal device belongs to the address segment corresponding to the first PLMN, the NEF network element determines that the terminal device is in a non-roaming state or an LBO roaming state. If the address of the terminal device does not belong to the address segment corresponding to the first PLMN, the NEF network element determines that the terminal device is in an HR roaming state. It can be seen that the NEF network element can determine the state of the terminal device by determining whether the address of the terminal device belongs to the address segment corresponding to the first PLMN.
- the terminal device is in a non-roaming state or an LBO roaming state
- the method further includes: according to the address of the terminal device, the NEF network element queries the address of the binding support function (BSF) network element from the network repository function (NRF) network element, and the BSF network element is used to provide the address of the PCF network element to the NEF network element according to the address of the terminal device.
- BSF binding support function
- NEF network repository function
- the NEF network element can successfully query the address of the BSF network element, which is conducive to the NEF network element to obtain the address of the PCF network element from the BSF network element, and then the first information can be transmitted from the NEF network element to the SMF network element via the PCF network element, which is conducive to ensuring the service quality of the terminal device when it is in a non-roaming state or an LBO roaming state.
- the terminal device is in HR roaming state
- the method further includes: according to the address of the terminal device, the NEF network element fails to query the address of the BSF network element from the NRF network element. That is, when the terminal device is in HR roaming state, the NEF network element cannot successfully query the address of the BSF network element from the NRF network element.
- the method further includes: if the NEF network element inquires the address of the BSF network element from the NRF network element according to the address of the terminal device, the NEF network element determines that the terminal device is in a non-roaming state or an LBO roaming state. If the NEF network element does not inquire the address of the BSF network element from the NRF network element according to the address of the terminal device, the NEF network element determines that the terminal device is in an HR roaming state. It can be seen that the NEF network element can determine the state of the terminal device by judging whether the address of the BSF network element is inquired from the NRF network element.
- the terminal device is in a non-roaming state or an LBO roaming state
- the method further includes: according to the address of the terminal device, the NEF network element queries the address of the PCF network element from the BSF network element. It can be seen that when the terminal device is in a non-roaming state or an LBO roaming state, the NEF network element can successfully query the address of the PCF network element, so that the first information can be transmitted from the NEF network element to the SMF network element via the PCF network element, which is conducive to ensuring the service quality of the terminal device when it is in a non-roaming state or an LBO roaming state.
- the terminal device is in HR roaming state
- the method further includes: according to the address of the terminal device, the NEF network element fails to query the address of the PCF network element from the BSF network element. That is, when the terminal device is in HR roaming state, the NEF network element cannot successfully query the address of the PCF network element from the BSF network element.
- the method further includes: if the NEF network element inquires the address of the PCF network element from the BSF network element according to the address of the terminal device, the NEF network element determines that the terminal device is in a non-roaming state or an LBO roaming state. If the NEF network element does not inquire the address of the PCF network element from the BSF network element according to the address of the terminal device, the NEF network element determines that the terminal device is in an HR roaming state. It can be seen that the NEF network element can determine the state of the terminal device by judging whether the address of the PCF network element is inquired from the BSF network element.
- the first information can be sent directly from the NEF network element to the SMF network element without being sent from the NEF network element to the SMF network element through the PCF network element, so that the first information can be transmitted from the AF network element to the SMF network element in a network containing HR roaming scenarios, thereby improving the quality of business services in networks containing HR roaming scenarios.
- the method also includes: the SMF network element obtains the address of the terminal device from the second SMF network element.
- the method before the NEF network element obtains the address of the SMF network element from the centralized network element based on the address of the terminal device, the method further includes: the centralized network element stores the correspondence between the address of the terminal device and the address of the SMF network element.
- the method further includes: the NEF network element determines that the terminal device is in HR roaming state.
- the method further includes: the centralized network element provides the address of the SMF network element to the NEF network element according to the address of the terminal device.
- the method also includes: the SMF network element sends the first information to a second SMF network element, the second SMF network element and the SMF network element belong to a different PLMN, and the second SMF network element is used to provide session services for the terminal device.
- the method further includes: the SMF network element receives the address of the terminal device from the AF network element forwarded via the NEF network element.
- the transmission path provided by the communication method includes: when the terminal device is in the HR roaming state or the roaming type supported by the terminal device includes the HR roaming type, the path for the first information to be transmitted from the NEF network element to the SMF network element is conducive to realizing that the first information can be transmitted from the AF network element to the SMF network element in a network containing HR roaming scenarios, thereby improving the service quality of the business in the network containing HR roaming scenarios.
- the method further includes: if the NEF network element inquires the address of the BSF network element from the NRF network element according to the address of the terminal device, the NEF network element determines that the terminal device is in a non-roaming state or an LBO roaming state. If the NEF network element does not inquire the address of the BSF network element from the NRF network element according to the address of the terminal device, the NEF network element determines that the terminal device is in a HR roaming state.
- the NEF network element, the PCF network element and the SMF network element belong to the first PLMN.
- the NEF network element is further used to query the roaming type supported by the terminal device from the UDM network element.
- the roaming type supported by the terminal device is the roaming type supported by the DN to which the terminal device is allowed to access; the NEF network element queries the roaming type supported by the terminal device from the UDM network element, specifically used for: querying the roaming type supported by the DN from the UDM network element according to the name of the DN.
- an embodiment of the present application provides a communication system, which includes a NEF network element, a third NEF network element, a second PCF network element, a second SMF network element and an SMF network element.
- the NEF network element is used to receive first information from the AF network element, and the first information is used to indicate a service requirement related to a session of a terminal device; the NEF network element is also used to send first information to the third NEF network element.
- the third NEF network element is used to receive first information from the NEF network element and send the first information to the second PCF network element; the second PCF network element is used to receive first information from the third NEF network element and send the first information to the second SMF network element.
- the second SMF network element is used to receive first information from the second PCF network element and send the first information to the SMF network element.
- the SMF network element is used to receive first information from the second SMF network element.
- the terminal device is in HR roaming state, or the terminal device supports HR roaming type.
- the communication system can realize that when the terminal device is in HR roaming state, or the terminal device supports HR roaming type, the first information from the AF network element is transmitted from the NEF network element to the SMF network element, so that the SMF network element can provide session services for the terminal device based on the first information, thereby improving the service quality.
- the NEF network element and the SMF network element belong to the first PLMN; the third NEF network element, the second PCF network element, and the second SMF network element belong to the second PLMN, and the first PLMN and the second PLMN are different.
- the NEF network element is further configured to determine that the terminal device is in the HR roaming state when the address of the terminal device does not belong to the address segment corresponding to the first PLMN.
- the roaming type supported by the terminal device is the roaming type supported by the DN to which the terminal device is allowed to access; the NEF network element queries the roaming type supported by the terminal device from the UDM network element, specifically used for: querying the roaming type supported by the DN from the UDM network element according to the name of the DN.
- the third NEF network element is used to receive the first information from the NEF network element and to send the first information to the second PCF network element.
- the second PCF network element is used to receive the first information from the third NEF network element and to send the first information to the second SMF network element.
- the second SMF network element is used to receive the first information from the second PCF network element and to send the first information to the SMF network element.
- the SMF network element is used to receive the first information from the NEF network element and to receive the first information from the second SMF network element.
- the terminal device supports LBO roaming type and HR roaming type.
- the NEF network element is further used to query the roaming type supported by the terminal device from the UDM network element.
- the communication device is a chip or a chip system.
- the processing unit may also be embodied as a processing circuit or a logic circuit; the transceiver unit may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or the chip system.
- the transceiver receives the above-mentioned signal and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned signal, the above-mentioned signal may need to be processed in other ways before it is input into the processor.
- the present application provides a chip system, which includes a processor and an interface, wherein the interface is used to obtain a program or instruction, and the processor is used to call the program or instruction to implement the function involved in the first aspect, or to call the program or instruction to implement the function involved in the second aspect, or to call the program or instruction to implement the function involved in the third aspect.
- the chip system also includes a memory, which is used to store program instructions and data necessary for the terminal.
- the chip system can be composed of a chip, or it can include a chip and other discrete devices.
- FIG2 is a schematic diagram of another network architecture provided in an embodiment of the present application.
- the embodiments of the present application can be applied to long term evolution (LTE) systems, and can also be applied to fifth generation (5G) communication systems such as new radio (NR) systems.
- 5G fifth generation
- NR new radio
- the technical solutions of the embodiments of the present application can also be applied to subsequently evolved communication systems, such as sixth generation (6G) mobile communication technology systems, seventh generation (7G) mobile communication technology systems, and the like.
- Nxx between the two network elements shown in Figure 3 represents an interface for communication between the two network elements.
- the network architecture for the HR roaming scenario can also be a 5G network architecture based on a service-oriented interface as shown in Figure 4.
- NRF network elements, PCF network elements, AF network elements, AMF network elements, SMF network elements, NEF network elements, EASDF network elements, and UDM network elements can use service-oriented interfaces provided to the outside to achieve communication.
- the "xx network element" in the VPLMN can also be referred to as the "visited xx network element", for example, the PCF network element in the VPLMN can also be referred to as the visited PCF network element (i.e., V-PCF network element), and the SMF network element in the VPLMN can also be referred to as the visited SMF network element (i.e., V-SMF network element).
- the PCF network element in the VPLMN can also be referred to as the visited PCF network element (i.e., V-PCF network element)
- the SMF network element in the VPLMN can also be referred to as the visited SMF network element (i.e., V-SMF network element).
- RAN equipment is mainly responsible for the access of terminal equipment to the 3rd Generation Partnership Project (3GPP) network through wireless communication.
- RAN equipment includes but is not limited to: evolved node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home network equipment (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WIFI) system, wireless relay node, wireless backhaul node, transmission point (TP)
- the base station may be a base station (or a transmission point, or ...
- SMF network elements are mainly responsible for session management in mobile networks, such as session establishment, modification, and release.
- the specific functions of SMF network elements include allocating Internet Protocol (IP) addresses to terminal devices, selecting UPF network elements that provide message forwarding functions, etc.
- IP Internet Protocol
- the SMF network element is the visited domain SMF network element that serves the terminal device when the terminal device roams, and the H-SMF network element is the home domain SMF network element that serves the terminal device when the terminal device roams.
- the UPF network element is mainly responsible for processing user messages, such as forwarding, billing statistics, etc.
- the UPF network element directly connected to the DN through the N6 interface in the protocol data unit (PDU) session can also be called a PDU session anchor (PSA).
- PDU protocol data unit
- the UDR network element can be used to provide storage capabilities for post-contract data, policy data, and capability exposure related data.
- AF network elements The purpose of interaction between AF network elements and 5G core network is to provide services, such as supporting the following functions: impact on service routing, opening up access network capabilities, and interacting with policy decision network elements for policy management.
- NEF network elements can be used to provide capability exposure for the 5G core network, allowing external network elements to interact with the 5G core network through the network element.
- EC is a distributed computing model that enables local processing of distributed business traffic by moving user plane functions and business processing capabilities down to the edge of the network.
- uplink user messages need to pass through base stations, backhaul networks, and centrally deployed anchor gateways to access the data network.
- These anchor gateways are generally deployed at higher locations in the network (for example, in the central computer room of a large region), resulting in excessive concentration of traffic at the anchor gateways when the traffic of the service is large.
- the EC-based network architecture can reduce the excessive concentration of traffic at the anchor gateways, thereby reducing the requirements for backhaul network bandwidth, computer room throughput, and gateway specifications.
- EC can bring devices with user plane functions and service processing capabilities closer to terminal devices, thereby shortening the distance of the backhaul network and reducing the end-to-end (E2E) delay and jitter of user messages.
- the network architectures shown in the aforementioned Figures 1 to 4 are all network architectures deployed using EC.
- UPF network elements are deployed at the edge of the network.
- Roaming types include LBO roaming type and HR roaming type.
- the terminal device supports LBO roaming type but not HR roaming type, or the terminal device supports HR roaming type but not LBO roaming type, or the terminal device supports LBO roaming type and HR roaming type.
- the terminal device supports LBO roaming type means that the contract information of the terminal device allows it to establish a session in the LBO roaming scenario
- the terminal device supports HR roaming type means that the contract information of the terminal device allows it to establish a session in the HR roaming scenario.
- the method may further include: the SMF network element obtains the address of the terminal device from the second SMF network element. That is, after receiving the address of the second SMF network element, the SMF network element can determine the second SMF network element according to the address of the second SMF network element, so as to obtain the address of the terminal device to be sent to the centralized network element from the second SMF network element.
- the embodiments of the present application can be applied to scenarios related to sessions of terminal devices, such as edge application server (EAS) rediscovery, edge migration, policy update, and user plane path change.
- EAS edge application server
- the following takes EAS rediscovery, edge migration, policy update, and user plane path change as examples to explain the first information in these scenarios respectively.
- the first information is specifically used to indicate that the EAS service (application) needs to be rediscovered in the session of the terminal device.
- the first information may include an EAS relocation indication (indication for eas relocation) and an identifier of the service.
- the NEF network element determines that the terminal device is in the HR roaming state when the NEF network element determines the state of the terminal device.
- the specific way in which the NEF network element determines the state of the terminal device may be as described in the following optional implementation methods 2.1 to 2.4.
- the NEF network element determines the state of the terminal device by judging whether the address of the terminal device belongs to the address segment corresponding to the first PLMN.
- the NEF network element fails to query the address of the PCF network element from the BSF network element means that the NEF network element fails to query the address of the PCF network element from the BSF network element, and the NEF network element queries the address of the PCF network element from the BSF network element means that the NEF network element successfully queries the address of the PCF network element from the BSF network element.
- the second PCF network element used to serve the session of the terminal device (the second PCF network element and the NEF network element belong to different PLMNs) will not send the address of the second PCF network element and the address of the terminal device to the PCF network element, and the BSF network element will not store the corresponding relationship between the address of the PCF network element and the address of the terminal device, then when the terminal device is in an HR roaming state, after receiving the address of the terminal device from the NEF network element, the BSF network element will not feedback the address of the PCF network element to the NEF network element. Therefore, the NEF network element can determine the status of the terminal device by judging whether the address of the PCF network element is queried from the BSF network element.
- the address of the BSF network element is configured in the NEF network element.
- the address of the BSF network element is sent by the NRF network element to the NEF network element; this manner can be applied in the case where the centralized network element is the BSF network element.
- the BSF network element receives the address of the terminal device and the address of the SMF network element from the SMF network element, it can send the address of the terminal device and the address of the BSF network element to the NRF network element.
- the NRF network element can store the address of the terminal device and the address of the BSF network element. In this way, the NEF network element can query the address of the BSF network element from the NRF network element based on the address of the terminal device.
- the NEF network element queries the UDM network element for the status of the terminal device according to the address of the terminal device; the UDM network element is used to store the status of the terminal device.
- the HR roaming state of the terminal device stored in the UDM network element may be sent by the SMF network element or the second SMF network element to the UDM network element. Specifically, after determining that the terminal device is in the HR roaming state, the SMF network element or the second SMF network element may send information indicating that the terminal device is in the HR roaming state to the UDM network element, so that the UDM network element can store the HR roaming state of the terminal device.
- the second SMF network element can determine that the terminal device is in the HR roaming state when receiving a message from the AMF network element indicating that the SMF network element provides session services for the terminal device.
- the SMF network element determining that the terminal device is in the HR roaming state please refer to the aforementioned optional implementation methods 1.1 and 1.2, which will not be repeated here.
- the non-roaming state or the LBO roaming state of the terminal device stored in the UDM network element may be sent by the SMF network element to the UDM network element.
- the SMF network element when the SMF network element receives information from the AMF network element indicating that the SMF network element provides session services for the terminal device, and the SMF network element does not receive the address of the terminal device from the second SMF network element, it may determine that the terminal device is in a non-roaming state or an LBO roaming state, and send information to the UDM network element indicating that the terminal device is in a non-roaming state or an LBO roaming state, so that the UDM network element can store the non-roaming state or the LBO roaming state of the terminal device.
- the NEF network element determines whether to execute step S104 of forwarding the first information from the AF network element to the SMF network element by judging whether the address of the SMF network element is queried from the centralized network element. Specifically, the NEF network element sends the address of the terminal device to the centralized network element to query the address of the SMF network element. If the NEF network element queries the address of the SMF network element from the centralized network element, the NEF executes step S104 according to the address of the SMF network element. If the NEF network element fails to query the address of the SMF network element from the centralized network element, the NEF network element does not execute step S104.
- the NEF network element queries the address of the SMF network element from the centralized network element means that the NEF network element successfully queries the address of the SMF network element from the centralized network element, and the NEF network element fails to query the address of the SMF network element from the centralized network element means that the NEF network element fails to query the address of the SMF network element from the centralized network element.
- the NEF network element forwards the first information from the AF network element to the SMF network element.
- the SMF network element receives the first information from the AF network element forwarded by the NEF network element.
- the method may further include steps as described in the following optional implementations 3.1 to 3.4.
- Implementation method 3.1 the embodiment of the present application is applied to the scenario of EAS rediscovery, and the first information is specifically used to indicate the situation in which the EAS service needs to be rediscovered in the session of the terminal device.
- the method also includes: the SMF network element determines the impact field (Impact field) based on the first information, and sends the Impact field to the second SMF network element; the second SMF network element receives the Impact field from the SMF network element, and initiates a protocol data unit (PDU) session modification process based on the Impact field to achieve EAS rediscovery.
- the SMF network element determines the impact field (Impact field) based on the first information, and sends the Impact field to the second SMF network element; the second SMF network element receives the Impact field from the SMF network element, and initiates a protocol data unit (PDU) session modification process based on the Impact field to achieve EAS rediscovery.
- PDU protocol data unit
- the second SMF network element is used to serve the session of the terminal device and belongs to a different PLMN than the SMF network element, and the Impact field includes the fully qualified domain name (fully qualified domain name, FQDN) or EAS IP address of the EAS that needs to be rediscovered.
- the method further includes: after receiving the first information, the SMF network element asks the second SMF network element whether to allow the SMF network element to instruct the UPF network element to replace the EAS IP address; when the second SMF network element allows, the SMF network element sends a message to the UPF network element to instruct the UPF network element to replace the EAS IP address.
- the second SMF network element is used to serve the session of the terminal device and belongs to a different PLMN from the SMF network element. In this manner, the second SMF network element decides whether to allow the SMF network element to instruct the UPF network element to replace the EAS IP address, which can enhance the control of the second SMF network element over the session.
- the second SMF network element and the second PCF network element are both used to serve the session of the terminal device, and the PLMN to which the second SMF network element and the second PCF network element belong is different from the PLMN to which the SMF network element belongs.
- the second PCF network element initiates a PDU session modification process for implementing the QoS policy update based on the first information, including: the second PCF network element generates a policy control and charging (PCC) rule based on the first information and sends the PCC rule to the second SMF network element; after receiving the PCC rule, the second SMF network element sends a packet detection rule (PDR) and a QoS enforcement rule (QER) to the UPF network element, and sends the QoS file and QoS rules to the SMF network element; the SMF sends the QoS file to the RAN device and sends the QoS rule to the terminal device.
- PCC policy control and charging
- PDR packet detection rule
- QER QoS enforcement rule
- Implementation method 3.4 the embodiment of the present application is applied to the scenario where the user plane path is changed and the user plane path change requirement is the requirement to add, delete or replace the UPF network element in the user plane path, and the first information is specifically used to indicate the situation of the requirement to add, delete or replace the UPF network element in the user plane path of the session of the terminal device.
- the method also includes: after receiving the first information, the SMF network element instructs the UPF network element used to serve the terminal device to add, delete or replace in the user plane path.
- the method also includes: after receiving the first information, the SMF network element asks the second SMF network element whether to allow the SMF network element to instruct the UPF network element used to serve the terminal device to add, delete or replace in the user plane path; when the second SMF network element allows, the SMF network element instructs the UPF network element used to serve the terminal device to add, delete or replace in the user plane path.
- the second SMF network element is used to serve the session of the terminal device and belongs to a different PLMN from the SMF network element.
- the method further includes: based on the address of the terminal device, the NEF network element queries the BSF network element for the address of the PCF network element and sends the first information to the PCF network element; the PCF network element receives the first information from the NEF network element and sends the first information to the SMF network element; the SMF network element receives the first information from the PCF network element.
- the PCF network element, the NEF network element and the SMF network element belong to the same PLMN.
- the PCF The first information sent by the network element to the SMF network element can be carried in the PCC rule sent by the PCF network element to the SMF network element.
- the PCC rule is used to update the service flow policy in the session of the terminal device.
- the PCC rule may also include a rule identifier, a service data flow template, etc.
- the SMF network element can store the address of the terminal device and the address of the SMF network element in the centralized network element, so that the NEF network element can obtain the address of the SMF network element from the centralized network element, so that the NEF network element can send the first information to the SMF network element, and the first information can be transmitted from the AF network element to the SMF network element, so that the SMF network element can provide session services for the terminal device based on the first information, thereby ensuring the quality of business services.
- the first information can be sent directly from the NEF network element to the SMF network element without being sent from the NEF network element to the SMF network element through the PCF network element, so that the first information can be transmitted from the AF network element to the SMF network element in the network containing the HR roaming scenario, thereby improving the quality of business services in the network containing the HR roaming scenario.
- FIG. 6 is a flow chart of a communication method 200 provided in an embodiment of the present application.
- the communication method 200 is described from the perspective of the interaction between the AF network element, the NEF network element and the SMF network element.
- This embodiment can be executed by the AF network element, the NEF network element and the SMF network element, or by the components (for example, processors, chips or chip systems, etc.) respectively included in the AF network element, the NEF network element and the SMF network element.
- the following is described by taking the AF network element, the NEF network element and the SMF network element as the execution subject as an example.
- the communication method 200 includes the following steps:
- the AF network element sends first information to the NEF network element, where the first information is used to indicate a service requirement related to a session of a terminal device.
- the NEF network element receives the first information from the AF network element.
- the NEF network element sends the first information to the SMF network element; correspondingly, the SMF network element receives the first information from the NEF network element.
- the method further includes: the NEF network element determines the state of the terminal device.
- the NEF network element determines the state of the terminal device.
- the method further includes: the NEF network element queries the roaming type supported by the terminal device from the UDM network element.
- the NEF network element queries the roaming type supported by the terminal device from the UDM network element, including: the NEF network element sends the terminal device identifier to the UDM network element; the UDM network element determines the roaming type supported by the terminal device based on the terminal device identifier, and sends the roaming type supported by the terminal device to the NEF network element.
- the terminal device identifier can be sent by the AF network element to the NEF network element by carrying it in an AF request.
- the identifier of the terminal device can be the address of the terminal device, or the identifier of the terminal device can be the GPSI or the group identifier, or the identifier of the terminal device can also be the name of the DN (DN name, DNN) that the terminal device is allowed to access, or the identifier of the terminal device can also be the single network slice selection assistance information (single-network slice selection assistance information, S-NSSAI) of the network slice supported by the terminal device, or the identifier of the terminal device can also be a combination of the name of the DN that the terminal device is allowed to access and the S-NSSAI of the network slice supported by the terminal device.
- the identifier of the terminal device can be the address of the terminal device, or the identifier of the terminal device can be the GPSI or the group identifier, or the identifier of the terminal device can also be the name of the DN (DN name, DNN) that the terminal device is allowed to access, or the identifier of the terminal device can also be the single
- the identifier of the terminal device can also be other information that can identify the terminal device, without limitation.
- the terminal device is allowed to access a certain DN means that the session and service flow of the terminal device are allowed to access the DN.
- the DN can be identified by the DNN, and the expression "the DNN that the terminal device is allowed to access” can also be used in the embodiment of the present application to represent the "DN that the terminal device is allowed to access”.
- the roaming type supported by the terminal device is a roaming type supported by the DN that the terminal device is allowed to access.
- the NEF network element queries the roaming type supported by the terminal device from the UDM network element, including: the NEF network element queries the roaming type supported by the DN that the terminal device is allowed to access from the UDM network element.
- the terminal device is allowed to access one or more DNs, and each of the one or more DNs may support one or more roaming types, and the roaming types supported by different DNs may be the same or different.
- the terminal device is allowed to access DN#1 and DN#2. If DN#1 and DN#2 both support LBO roaming type but not HR roaming type, the terminal device supports LBO roaming type but not HR roaming type; if DN#1 and DN#2 both support HR roaming type but not HR roaming type, the terminal device supports HR roaming type but not HR roaming type.
- DN#1 supports LBO roaming type but not HR roaming type
- DN#2 supports HR roaming type but not LBO roaming type
- DN#3 supports LBO roaming and HR roaming types. If the terminal device is allowed to access any two of DN#1, DN#2 and DN#3, or the terminal device is allowed to access the DNs For DN#1, DN#2 and DN#3, the terminal equipment supports LBO roaming type and HR roaming type.
- the UDM network element can directly inform the NEF network element of the roaming type supported by the terminal device, or inform the NEF network element of the roaming type supported by each DN in at least one DN that the terminal device is allowed to access. For example, DN#1 that the terminal device is allowed to access supports the LBO roaming type but not the HR roaming type, and DN#2 that the terminal device is allowed to access supports the HR roaming type but not the LBO roaming type.
- the UDM network element can inform the NEF network element that the terminal device supports both the LBO roaming type and the HR roaming type, or the UDM network element can inform the NEF network element that DN#1 that the terminal device is allowed to access supports the LBO roaming type but not the HR roaming type, and DN#2 supports the HR roaming type but not the LBO roaming type.
- the roaming type supported by the terminal device is the roaming type supported by the network slice supported by the terminal device.
- the NEF network element queries the roaming type supported by the terminal device from the UDM network element, including: the NEF network element queries the roaming type supported by the network slice supported by the terminal device from the UDM network element.
- the network slices supported by the terminal device may be one or more, and the roaming type supported by each network slice in the one or more network slices may be one or more, and the roaming types supported by different network slices may be the same or different.
- This method is similar to the case where the roaming type supported by the terminal device is the roaming type supported by the DN that the terminal device is allowed to access. Please refer to the relevant explanation of the case where the roaming type supported by the terminal device is the roaming type supported by the DN that the terminal device is allowed to access.
- step S202 for various states of the terminal device or various roaming types supported by the terminal device, the specific manner in which the NEF network element sends the first information to the SMF network element may be as described in the following optional implementations 4.1 to 4.3.
- Implementation 4.1 The terminal device is in a non-roaming state, or the terminal device is in an LBO roaming state, or the terminal device supports the LBO roaming type.
- the terminal device supporting the LBO roaming type means that the terminal device supports the LBO roaming type but does not support the HR roaming type.
- the NEF network element sends the first information to the SMF network element, including: the NEF network element sends the first information to the PCF network element; the PCF network element receives the first information from the NEF network element, and sends the first information to the SMF network element.
- the NEF network element, the PCF network element and the SMF network element belong to the first PLMN.
- the first PLMN is the HPLMN; when the terminal device is in an LBO roaming state, or the terminal device supports the LBO roaming type, the first PLMN is the VPLMN.
- the first information sent by the PCF network element to the SMF network element can be carried in the PCC rules sent by the PCF network element to the SMF network element.
- PCC rules please refer to the relevant description in the communication method 100, which will not be repeated here.
- the terminal device is in HR roaming state, or the terminal device supports HR roaming type.
- the terminal device supports HR roaming type, which means that the terminal device supports HR roaming type but does not support LBO roaming type.
- the NEF network element sends the first information to the SMF network element, including: the NEF network element sends the first information to the third NEF network element; the third NEF network element receives the first information from the NEF network element and sends the first information to the second PCF network element; the second PCF network element receives the first information from the third NEF network element and sends the first information to the second SMF network element; the second SMF network element receives the first information from the second PCF network element and sends the first information to the SMF network element.
- the NEF network element and the SMF network element belong to the first PLMN
- the third NEF network element, the second PCF network element and the second SMF network element belong to the second PLMN
- the first PLMN and the second PLMN are different
- the first PLMN is a VPLMN
- the second PLMN is a HPLMN.
- the address of the third NEF network element is configured in the NEF network element; or, the address of the third NEF network element is obtained by the NEF network element from the second NRF network element through the NRF network element, wherein the NRF network element belongs to the first PLMN and the second NRF network element belongs to the second PLMN.
- the NEF network element sends the first information to the SMF network element, including: the NEF network element sends the first information to the UDR network element, the UDR network element stores the first information and sends the first information to the SMF network element that has subscribed to the first information.
- the method also includes: the SMF network element subscribes to the first information from the UDR network element.
- the NEF network element sends the first information to the SMF network element, including: the NEF network element sends the first information to the UDR network element, the UDR network element stores the first information; the NEF network element obtains the first information from the UDR network element and sends the first information to the SMF network element that has subscribed to the first information.
- the method also includes: the SMF network element subscribes to the first information from the NEF network element.
- the NEF network element when the terminal device is in the HR roaming state, sends the first information to the SMF network element, including: according to the address of the terminal device, the NEF network element queries the centralized network element for the address of the SMF network element, and sends the first information to the SMF network element.
- the method before the NEF network element queries the centralized network element for the address of the SMF network element, the method also includes: the SMF network element sends the address of the terminal device and the address of the SMF network element to the centralized network element.
- Implementation method 4.3 The terminal device supports LBO roaming type and HR roaming type.
- the NEF network element sends the first information to the SMF network element, including: the NEF network element sends the first information to the PCF network element, and sends the first information to the third NEF network element.
- the PCF network element receives the first information from the NEF network element and sends the first information to the SMF network element.
- the third NEF network element receives the first information from the NEF network element, and sends the first information to the second PCF network element: the second PCF network element receives the first information from the third NEF network element, and sends the first information to the second SMF network element; the second SMF network element receives the first information from the second PCF network element, and sends the first information to the SMF network element.
- the NEF network element, the PCF network element and the SMF network element belong to the first PLMN
- the third NEF network element, the second PCF network element and the second SMF network element belong to the second PLMN
- the first PLMN and the second PLMN are different
- the first PLMN is a VPLMN
- the second PLMN is a HPLMN.
- the communication method 200 may further include when the embodiment of the present application is applied to the scenarios of EAS rediscovery, edge migration, policy update, and user plane path change, as described in the following optional implementations 5.1 to 5.4.
- the SMF network element can also initiate a PDU session modification process for implementing EAS rediscovery based on the first information.
- the SMF network element initiates a PDU session modification process for implementing EAS rediscovery based on the first information, which may include: the SMF network element determines an Impact field based on the first information, and sends the Impact field to the terminal device, and the terminal device can clear the domain name system (DNS) cache content related to the Impact field stored therein to implement ESA rediscovery.
- DNS domain name system
- the second SMF network element initiates a PDU session modification process for realizing EAS rediscovery based on the first information, which may include: the second SMF network element instructs the SMF network element to determine the Impact field based on the first information, and the SMF network element feeds back the Impact field to the second SMF network element after determining the Impact field; the second SMF network element obtains the Impact field and sends the Impact field to the terminal device through the SMF network element, and the terminal device can clear the domain name system (DNS) cache content related to the Impact field stored therein to realize ESA rediscovery.
- DNS domain name system
- Implementation method 5.2 the embodiment of the present application is applied to the scenario of edge migration and the edge migration is specifically EAS IP address replacement, and the first information is specifically used to indicate the need for EAS IP address replacement for the session of the terminal device.
- the method also includes: the SMF network element sends a message to the UPF network element to instruct the UPF network element to replace the EAS IP address, and the UPF network element replaces the EAS IP address after receiving the message.
- the method also includes: the SMF network element instructs the UPF network element used to serve the terminal device to add, delete or replace in the user plane path.
- the NEF network element sends the first information to the SMF network element according to the state of the terminal device or the roaming type supported by the terminal device.
- the communication method also provides a transmission path for the first information to be transmitted from the NEF network element to the SMF network element when the terminal device is in various states or the terminal device supports various roaming types, ensuring that the first information can be transmitted from the AF network element to the SMF network element when the terminal device is in various states or the terminal device supports various roaming types, so that the SMF network element can provide session services for the terminal device based on the first information, thereby improving the service quality of the business.
- the transmission path provided by the communication method includes: when the terminal device is in the HR roaming state or the roaming type supported by the terminal device includes the HR roaming type, the path for the first information to be transmitted from the NEF network element to the SMF network element is conducive to realizing that the first information can be transmitted from the AF network element to the SMF network element in a network containing HR roaming scenarios, thereby improving the service quality of the business in the network containing HR roaming scenarios.
- the SMF network element subscribes to first information from the NEF network element, where the first information is used to indicate service requirements related to the session of the terminal device.
- This implementation method is similar to the aforementioned method in which the SMF network element sends the identifier of the terminal device to the NEF network element, and sends the DNN or S-NSSAI to the NEF network element. Please refer to the relevant description and will not be repeated here. Elaborate.
- the NEF network element sends the first information to the UDR network element; correspondingly, the UDR network element receives the first information from the NEF network element. If S301a is executed, after executing S303, step S304a is also executed; if S301b is executed, after executing S303, step S304b is also executed.
- the NEF network element obtains the first information from the UDR network element, and sends the first information to the SMF network element; correspondingly, the SMF network element receives the first information from the NEF network element.
- the first information can be sent directly from the NEF network element to the SMF network element without having to be sent from the NEF network element to the SMF network element through the PCF network element, thereby enabling the first information to be transmitted from the AF network element to the SMF network element in a network containing an HR roaming scenario, thereby improving the quality of business services in a network containing an HR roaming scenario.
- the NEF network element is used to obtain the address of the communication device 900 from the centralized network element according to the address of the terminal device, and forward the first information to the communication device 900.
- the terminal device is in HR roaming state; the communication unit 901 sends the address of the terminal device and the address of the communication device 900 to the centralized network element, specifically used for: sending the address of the terminal device and the address of the communication device 900 to the centralized network element according to the HR roaming state of the terminal device.
- processing unit 902 is further configured to determine whether the terminal device is in an HR roaming state.
- the communication unit 901 is also used to receive the address of a second SMF network element from the AMF network element before sending the address of the terminal device and the address of the communication device 900 to the centralized network element; the second SMF network element is used to provide session services for the terminal device.
- the communication unit 901 is also used to obtain the address of the terminal device from the second SMF network element.
- the communication unit 901 sends the address of the terminal device and the address of the communication apparatus 900 to the centralized network element, specifically for: sending the address of the terminal device and the address of the communication apparatus 900 to the centralized network element through the second NEF network element.
- the communication unit 901 is also used to send the first information to a second SMF network element, the second SMF network element and the communication device 900 belong to different PLMNs, and the second SMF network element is used to provide session services for the terminal device.
- the communication unit 901 is used to receive first information from the AF network element, where the first information is used to indicate a service requirement related to a session of the terminal device.
- the processing unit 902 is used to query the centralized network element for an address of the SMF network element according to the address of the terminal device.
- the communication unit 901 is also used to send the first information to the SMF network element.
- the processing unit 902 is further used to determine whether the terminal device is in the HR roaming state before querying the centralized network element for the address of the SMF network element based on the address of the terminal device.
- the communication unit 901 is used to receive first information from the AF network element, where the first information is used to indicate service requirements related to a session of the terminal device; the communication unit 901 is also used to send the first information to the SMF network element.
- the communication unit 901 sends the first information to the SMF network element, which is specifically used to: send the first information to the SMF network element through the PCF network element, wherein the terminal device is in a non-roaming state, or the terminal device is in an LBO roaming state, or the terminal device supports the LBO roaming type.
- the communication unit 901 sends the first information to the SMF network element, specifically used to: send the first information to the SMF network element through the third NEF network element, the second PCF network element, and the second SMF network element, wherein the terminal device is in the HR roaming state, or the terminal device supports the HR roaming type.
- the communication unit 901 sends the first information to the SMF network element, specifically used to: send the first information to the SMF network element through the PCF network element, and send the first information to the SMF network element through the third NEF network element, the second PCF network element, and the second SMF network element, wherein the terminal device supports LBO roaming type and HR roaming type.
- the communication device 900, the PCF network element and the SMF network element belong to a first PLMN; the third NEF network element, the second PCF network element and the second SMF network element belong to a second PLMN, and the first PLMN and the second PLMN are different.
- the address of the terminal device in a non-roaming state or an LBO roaming state belongs to the address segment corresponding to the first PLMN; or, the address of the terminal device in an HR roaming state does not belong to the address segment corresponding to the first PLMN.
- the processing unit 902 is used to determine that the terminal device is in a non-roaming state or an LBO roaming state if the address of the terminal device belongs to the address segment corresponding to the first PLMN, and to determine that the terminal device is in an HR roaming state if the address of the terminal device does not belong to the address segment corresponding to the first PLMN.
- the terminal device is in a non-roaming state or an LBO roaming state, and the processing unit 902 is further used to query the address of the BSF network element from the NRF network element according to the address of the terminal device, and the BSF network element is used to provide the address of the PCF network element to the communication device 900 according to the address of the terminal device.
- the terminal device is in an HR roaming state, and the processing unit 902 is further used to fail to query the address of the BSF network element from the NRF network element according to the address of the terminal device.
- the processing unit 902 is further configured to determine that the terminal device is in a non-roaming state or an LBO roaming state if the address of the BSF network element is queried from the NRF network element according to the address of the terminal device, and if the address of the BSF network element is not queried from the NRF network element according to the address of the terminal device. The address of the BSF network element is queried to determine that the terminal device is in HR roaming state.
- the terminal device is in a non-roaming state or an LBO roaming state, and the processing unit 902 is further configured to query the address of the PCF network element from the BSF network element according to the address of the terminal device.
- the terminal device is in an HR roaming state, and the processing unit 902 is further configured to fail to query the address of the PCF network element from the BSF network element according to the address of the terminal device.
- the processing unit 902 is further used to determine that the terminal device is in a non-roaming state or an LBO roaming state if the address of the PCF network element is queried from the BSF network element based on the address of the terminal device, and to determine that the terminal device is in an HR roaming state if the address of the PCF network element is not queried from the BSF network element based on the address of the terminal device.
- processing unit 902 is further configured to query the roaming type supported by the terminal device from the UDM network element.
- the roaming type supported by the terminal device is the roaming type supported by the DN that the terminal device is allowed to access.
- Processing unit 902 queries the roaming type supported by the terminal device from the UDM network element, specifically for: querying the roaming type supported by the DN from the UDM network element according to the name of the DN.
- the communication device 1000 may include one or more processors 1001.
- the processor may be used to implement part or all of the functions of the above-mentioned SMF network element or NEF network element through a logic circuit or running a computer program.
- the processor 1001 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component or a central processing unit (CPU).
- CPU central processing unit
- the baseband processor may be used to process the communication protocol and the communication data
- the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute the software program, and process the data of the software program.
- the communication device 1000 may include one or more memories 1002, on which instructions 1004 may be stored, and the instructions may be executed on the processor 1001, so that the communication device 1000 performs the method described in the above method embodiment.
- data may also be stored in the memory 1002.
- the processor 1001 and the memory 1002 may be provided separately or integrated together.
- the memory 1002 may include, but is not limited to, non-volatile memories such as a hard disk drive (HDD) or a solid-state drive (SSD), random access memory (RAM), erasable programmable ROM (EPROM), ROM or portable read-only memory (compact disc read-only memory, CD-ROM), etc.
- non-volatile memories such as a hard disk drive (HDD) or a solid-state drive (SSD), random access memory (RAM), erasable programmable ROM (EPROM), ROM or portable read-only memory (compact disc read-only memory, CD-ROM), etc.
- the communication device 1000 may further include a transceiver 1005 and an antenna 1006.
- the transceiver 1005 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function.
- the transceiver 1005 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.
- the processor 1001 is used to send the address of the terminal device and the address of the communication device 1000 to the centralized network element; the centralized network element is used to provide the address of the communication device 1000 to the NEF network element according to the address of the terminal device.
- the transceiver 1005 is used to receive first information from the AF network element forwarded by the NEF network element; the first information is used to indicate a service demand related to a session of the terminal device.
- the NEF network element is used to obtain the address of the communication device 1000 from the centralized network element according to the address of the terminal device, and forward the first information to the communication device 1000.
- the transceiver 1005 is further configured to receive an address of a terminal device from an AF network element forwarded via the NEF network element.
- the centralized network element is used to store the correspondence between the address of the terminal device and the address of the communication apparatus 1000 .
- the terminal device is in HR roaming state; the transceiver 1005 sends the address of the terminal device and the address of the communication device 1000 to the centralized network element, specifically used for: sending the address of the terminal device and the address of the communication device 1000 to the centralized network element according to the HR roaming state of the terminal device.
- processor 1001 is further used to determine that the terminal device is in HR roaming state.
- the transceiver 1005 is also used to receive the address of a second SMF network element from the AMF network element before sending the address of the terminal device and the address of the communication device 1000 to the centralized network element; the second SMF network element is used to provide session services for the terminal device.
- the transceiver 1005 is also used to obtain the address of the terminal device from the second SMF network element.
- the communication device 1000 and the centralized network element belong to the same PLMN.
- the transceiver 1005 sends the address of the terminal device and the address of the communication apparatus 1000 to the centralized network element, specifically used to: send the address of the terminal device and the address of the communication apparatus 1000 to the centralized network element via the second NEF network element.
- the transceiver 1005 is also used to send the first information to a second SMF network element, the second SMF network element and the communication device 1000 belong to different PLMNs, and the second SMF network element is used to provide session services for the terminal device.
- the transceiver 1005 is used to receive first information from the AF network element, where the first information is used to indicate a service requirement related to a session of the terminal device.
- the processor 1001 is used to query the centralized network element for an address of the SMF network element according to the address of the terminal device.
- the transceiver 1005 is also used to send the first information to the SMF network element.
- the processor 1001 is further used to determine whether the terminal device is in the HR roaming state before querying the centralized network element for the address of the SMF network element based on the address of the terminal device.
- the transceiver 1005 is used to receive first information from the AF network element, where the first information is used to indicate service requirements related to a session of the terminal device; the transceiver 1005 is also used to send the first information to the SMF network element.
- processor 1001 is used to determine that the terminal device is in a non-roaming state or an LBO roaming state if the address of the terminal device belongs to the address segment corresponding to the first PLMN, and to determine that the terminal device is in an HR roaming state if the address of the terminal device does not belong to the address segment corresponding to the first PLMN.
- the processor 1001 is further used to determine that the terminal device is in a non-roaming state or an LBO roaming state if the address of the PCF network element is queried from the BSF network element according to the address of the terminal device, and to determine that the terminal device is in an HR roaming state if the address of the PCF network element is not queried from the BSF network element according to the address of the terminal device.
- Interface 1102 is used to receive first information from the AF network element forwarded by the NEF network element; the first information is used to indicate a service demand related to a session of the terminal device.
- interface 1102 is used to receive first information from the AF network element, where the first information is used to indicate service requirements related to a session of a terminal device; interface 1102 is also used to send the first information to the SMF network element.
- interface 1102 sends the first information to the SMF network element, specifically used to: send the first information to the SMF network element through the PCF network element, and send the first information to the SMF network element through the third NEF network element, the second PCF network element, and the second SMF network element, wherein the terminal device supports LBO roaming type and HR roaming type.
- the present application also provides a computer program, which, when executed on a computer, implements the functions of any of the above method embodiments.
- the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium (e.g., an SSD), etc.
- a magnetic medium e.g., a floppy disk, a hard disk, a magnetic tape
- an optical medium e.g., a high-density digital video disc (DVD)
- DVD high-density digital video disc
- SSD semiconductor medium
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims (35)
- 一种通信方法,其特征在于,包括:会话管理功能SMF网元确定满足如下条件:终端设备处于归属路由HR漫游状态,所述SMF网元向网络开放功能NEF网元订阅指示服务需求的信息,所述服务需求与所述终端设备的协议数据单元PDU会话相关;所述SMF网元接收来自所述NEF网元的指示所述服务需求的信息。
- 根据权利要求1所述的方法,其特征在于,所述SMF网元接收来自所述NEF网元的指示所述服务需求的信息,包括:所述SMF网元从所述NEF网元直接接收指示所述服务需求的信息,其中,指示所述服务需求的信息不经过策略控制功能PCF网元。
- 根据权利要求1或2所述的方法,其特征在于,所述HR漫游状态是所述终端设备的PDU会话带有会话中断的HR漫游状态。
- 一种通信方法,其特征在于,所述方法包括:网络开放功能NEF网元接收来自应用功能AF网元的第一信息,所述第一信息用于指示与终端设备的会话相关的服务需求;根据所述终端设备的地址,所述NEF网元向集中网元查询会话管理功能SMF网元的地址;所述NEF网元向所述SMF网元发送所述第一信息。
- 根据权利要求4所述的方法,其特征在于,所述根据所述终端设备的地址,所述NEF网元向集中网元查询SMF网元的地址之前,所述方法还包括:所述NEF网元确定所述终端设备处于归属路由HR漫游状态。
- 根据权利要求4或5所述的方法,其特征在于,所述方法还包括:所述集中网元根据所述终端设备的地址为所述NEF网元提供所述SMF网元的地址。
- 根据权利要求6所述的方法,其特征在于,所述NEF网元向集中网元查询会话管理功能SMF网元的地址之前,所述方法还包括:所述SMF网元向所述集中网元发送所述终端设备的地址和所述SMF网元的地址;所述集中网元存储所述终端设备的地址和所述SMF网元的地址的对应关系。
- 根据权利要求4至7任一项所述的方法,其特征在于,所述方法还包括:所述SMF网元向第二SMF网元发送所述第一信息,所述第二SMF网元与所述SMF网元属于不同的公共陆地移动网络PLMN,所述第二SMF网元用于为所述终端设备的会话服务。
- 一种通信方法,其特征在于,所述方法包括:会话管理功能SMF网元向集中网元发送终端设备的地址和所述SMF网元的地址;所述集中网元用于根据所述终端设备的地址为网络开放功能NEF网元提供所述SMF网元的地址;所述SMF网元接收经所述NEF网元转发的来自应用功能AF网元的第一信息;所述第一信息用于指示与所述终端设备的会话相关的服务需求。
- 根据权利要求9所述的方法,其特征在于,所述NEF网元用于根据所述终端设备的地址,从所述集中网元获取所述SMF网元的地址,并转发所述第一信息给所述SMF网元。
- 根据权利要求9或10所述的方法,其特征在于,所述方法还包括:所述SMF网元接收经所述NEF网元转发的来自所述AF网元的所述终端设备的地址。
- 根据权利要求9至11任一项所述的方法,其特征在于,所述集中网元用于存储所述终端设备的地址和所述SMF网元的地址的对应关系。
- 根据权利要求9至12任一项所述的方法,其特征在于,所述终端设备处于归属路由HR漫游状态;所述SMF网元向集中网元发送终端设备的地址和所述SMF网元的地址,包括:根据所述终端设备的所述HR漫游状态,所述SMF网元向所述集中网元发送所述终端设备的地址和所述SMF网元的地址。
- 根据权利要求13所述的方法,其特征在于,所述方法还包括:所述SMF网元确定所述终端设备处于所述HR漫游状态。
- 根据权利要求9至12任一项所述的方法,其特征在于,所述SMF网元向集中网元发送终端设备的地址和所述SMF网元的地址之前,所述方法还包括:所述SMF网元接收来自接入和移动管理功能AMF网元的第二SMF网元的地址;所述第二SMF网元用于为所述终端设备的会话服务。
- 根据权利要求15所述的方法,其特征在于,所述方法还包括:所述SMF网元从所述第二SMF网元获取所述终端设备的地址。
- 根据权利要求9至16任一项所述的方法,其特征在于,所述SMF网元和所述集中网元属于同一个公共陆地移动网络PLMN。
- 根据权利要求9至17任一项所述的方法,其特征在于,所述SMF网元向集中网元发送终端设备的地址和所述SMF网元的地址,包括:所述SMF网元通过第二NEF网元向所述集中网元发送所述终端设备的地址和所述SMF网元的地址。
- 根据权利要求9至18任一项所述的方法,其特征在于,所述方法还包括:所述SMF网元向第二SMF网元发送所述第一信息,所述第二SMF网元与所述SMF网元属于不同的PLMN,所述第二SMF网元用于为所述终端设备的会话服务。
- 一种通信方法,其特征在于,所述方法包括:会话管理功能SMF网元向集中网元发送终端设备的地址和所述SMF网元的地址;根据所述终端设备的地址,网络开放功能NEF网元从所述集中网元获取所述SMF网元的地址,并转发来自应用功能AF网元的第一信息给所述SMF网元,所述第一信息用于指示与所述终端设备的会话相关的服务需求;所述SMF网元接收来自所述NEF网元的所述第一信息。
- 一种通信系统,其特征在于,所述系统包括会话管理功能SMF网元和网络开放功能NEF网元;所述SMF网元用于向集中网元发送终端设备的地址和所述SMF网元的地址;所述NEF网元用于根据所述终端设备的地址,从所述集中网元获取所述SMF网元的地址,并转发来自应用功能AF网元的第一信息给所述SMF网元,所述第一信息用于指示与所述终端设备的会话相关的服务需求;所述SMF网元还用于接收来自所述NEF网元的所述第一信息。
- 一种通信系统,其特征在于,所述系统包括应用功能AF网元和网络开放功能NEF网元;所述AF网元用于向所述NEF网元发送第一信息,所述第一信息用于指示与终端设备的会话相关的服务需求;所述NEF网元用于接收来自所述AF网元的所述第一信息;所述NEF网元还用于根据所述终端设备的地址,向集中网元查询会话管理功能SMF网元的地址,并向所述SMF网元发送所述第一信息。
- 一种通信方法,其特征在于,所述方法包括:网络开放功能NEF网元接收来自应用功能AF网元的第一信息,所述第一信息用于指示与终端设备的会话相关的服务需求;所述NEF网元向会话管理功能SMF网元发送所述第一信息;其中,所述NEF网元向所述SMF网元发送所述第一信息,包括:所述NEF网元通过策略控制功能PCF网元向所述SMF网元发送所述第一信息,其中,所述终端设备处于非漫游状态,或者,所述终端设备处于本地分离LBO漫游状态,或者,所述终端设备支持LBO漫游类型;或者,所述NEF网元向所述SMF网元发送所述第一信息,包括:所述NEF网元通过第三NEF网元、第二PCF网元、第二SMF网元向所述SMF网元发送所述第一信息,其中,所述终端设备处于归属路由HR漫游状态,或者,所述终端设备支持HR漫游类型;或者,所述NEF网元向所述SMF网元发送所述第一信息,包括:所述NEF网元通过PCF网元向所述SMF网元发送所述第一信息,并通过第三NEF网元、第二PCF网元、第二SMF网元向所述SMF网元发送所述第一信息,其中,所述终端设备支持LBO漫游类型和HR漫游类型。
- 根据权利要求23所述的方法,其特征在于,所述NEF网元、所述PCF网元和所述SMF网元属于第一PLMN;所述第三NEF网元、所述第二PCF网元、所述第二SMF网元属于第二PLMN,所述第一PLMN和所述第二PLMN不同。
- 根据权利要求23或24所述的方法,其特征在于,处于所述非漫游状态或所述LBO漫游状态的所述终端设备的地址属于第一PLMN对应的地址段;或者,处于所述HR漫游状态的所述终端设备的地址不属于第一PLMN对应的地址段。
- 根据权利要求23或24所述的方法,其特征在于,所述终端设备处于所述非漫游状态或所述LBO漫游状态,所述方法还包括:根据所述终端设备的地址,所述NEF网元从网络存储功能NRF网元查询到绑定支持功能BSF网元的地址,所述BSF网元用于根据所述终端设备的地址为所述NEF网元提供所述PCF网元的地址;或者,所述终端设备处于所述HR漫游状态,所述方法还包括:根据所述终端设备的地址,所述NEF网元从NRF网元未查询到BSF网元的地址。
- 根据权利要求23或24所述的方法,其特征在于,所述终端设备处于所述非漫游状态或所述LBO漫游状态,所述方法还包括:根据所述终端设备的地址,所述NEF网元从BSF网元查询到所述PCF网元的地址;或者,所述终端设备处于所述HR漫游状态,所述方法还包括:根据所述终端设备的地址,所述NEF网元从BSF网元未查询到所述PCF网元的地址。
- 根据权利要求23或24所述的方法,其特征在于,所述方法还包括:所述NEF网元从统一数据管理UDM网元查询到所述终端设备支持的漫游类型。
- 根据权利要求28所述的方法,其特征在于,所述终端设备支持的漫游类型是所述终端设备被允许接入的数据网络DN支持的漫游类型;所述NEF网元从UDM网元查询到所述终端设备支持的漫游类型,包括:根据所述DN的名称,所述NEF网元从所述UDM网元查询到所述DN支持的漫游类型。
- 一种通信方法,其特征在于,所述方法包括:网络开放功能NEF网元接收来自应用功能AF网元的第一信息,所述第一信息用于指示与终端设备的会话相关的服务需求;所述NEF网元向会话管理功能SMF网元发送所述第一信息;所述SMF网元接收来自所述NEF网元的所述第一信息;其中,所述NEF网元向所述SMF网元发送所述第一信息,包括:所述NEF网元通过策略控制功能PCF网元向所述SMF网元发送所述第一信息,其中,所述终端设备处于非漫游状态,或者,所述终端设备处于本地分离LBO漫游状态,或者,所述终端设备支持LBO漫游类型;或者,所述NEF网元向所述SMF网元发送所述第一信息,包括:所述NEF网元通过第三NEF网元、第二PCF网元、第二SMF网元向所述SMF网元发送所述第一信息,其中,所述终端设备处于归属路由HR漫游状态,或者,所述终端设备支持HR漫游类型;或者,所述NEF网元向所述SMF网元发送所述第一信息,包括:所述NEF网元通过PCF网元向所述SMF网元发送所述第一信息,并通过第三NEF网元、第二PCF网元、第二SMF网元向所述SMF网元发送所述第一信息,其中,所述终端设备支持LBO漫游类型和HR漫游类型。
- 一种通信系统,其特征在于,所述系统包括会话管理功能SMF网元和网络开放功能NEF网元;所述NEF网元用于接收来自应用功能AF网元的第一信息,所述第一信息用于指示与终端设备的会话相关的服务需求;所述NEF网元还用于向所述SMF网元发送所述第一信息;所述SMF网元用于接收来自所述NEF网元的所述第一信息;其中,所述NEF网元向所述SMF网元发送所述第一信息,具体用于:通过策略控制功能PCF网元向所述SMF网元发送所述第一信息,其中,所述终端设备处于非漫游状态,或者,所述终端设备处于本地分离LBO漫游状态,或者,所述终端设备支持LBO漫游类型;或者,所述NEF网元向所述SMF网元发送所述第一信息,具体用于:通过第三NEF网元、第二PCF网元、第二SMF网元向所述SMF网元发送所述第一信息,其中,所述终端设备处于归属路由HR漫游状态,或者,所述终端设备支持HR漫游类型;或者,所述NEF网元向所述SMF网元发送所述第一信息,具体用于:通过PCF网元向所述SMF网元发送所述第一信息,并通过第三NEF网元、第二PCF网元、第二SMF网元向所述SMF网元发送所述第一信息,其中,所述终端设备支持LBO漫游类型和HR漫游类型。
- 一种通信装置,其特征在于,所述装置包括用于实现权利要求1至3任一项所述的方法的模块或单元,或者,所述装置包括用于实现权利要求4至5任一项所述的方法的模块或单元,或者,所述装置包括用于实现权利要求9至19任一项所述的方法的模块或单元,或者,所述装置包括用于实现权利要求23至29任一项所述的方法的模块或单元。
- 一种通信装置,其特征在于,包括存储器和处理器;所述存储器,用于存储指令或计算机程序;所述处理器,用于执行所述存储器所存储的计算机程序或指令,以使所述通信装置执行权利要求1至3任一项所述的方法,或者,以使所述通信装置执行权利要求4至5任一项所述的方法,或者,以使所述通信装置执行权利要求9至19任一项所述的方法,或者,以使所述通信装置执行权利要求23至29任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有计算机程序,当所述计算机程序被运行时,实现如权利要求1至3任一项所述的方法,或者,实现如权利要求4至5任一项所述的方法,或者,实现如权利要求9至19任一项所述的方法,或者,实现如权利要求23至29任一项所述的方法。
- 一种计算机程序产品,所述计算机程序产品包括:计算机程序代码,当所述计算机程序代码并运行时,实现如权利要求1至3任一项所述的方法,或者,实现如权利要求4至5任一项所述的方法,或者,实现如权利要求9至19任一项所述的方法,或者,实现如权利要求23至29任一项所述的方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23914606.1A EP4637194A4 (en) | 2023-01-06 | 2023-12-29 | COMMUNICATION METHOD, APPARATUS AND SYSTEM |
| KR1020257025746A KR20250130656A (ko) | 2023-01-06 | 2023-12-29 | 통신 방법, 장치, 및 시스템 |
| US19/261,644 US20250338112A1 (en) | 2023-01-06 | 2025-07-07 | Communication method, apparatus, and system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310019320.0A CN118317289A (zh) | 2023-01-06 | 2023-01-06 | 通信方法、装置和系统 |
| CN202310019320.0 | 2023-01-06 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19/261,644 Continuation US20250338112A1 (en) | 2023-01-06 | 2025-07-07 | Communication method, apparatus, and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024146475A1 true WO2024146475A1 (zh) | 2024-07-11 |
Family
ID=91730752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/143433 Ceased WO2024146475A1 (zh) | 2023-01-06 | 2023-12-29 | 通信方法、装置和系统 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250338112A1 (zh) |
| EP (1) | EP4637194A4 (zh) |
| KR (1) | KR20250130656A (zh) |
| CN (1) | CN118317289A (zh) |
| WO (1) | WO2024146475A1 (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026031099A1 (zh) * | 2024-08-08 | 2026-02-12 | 北京小米移动软件有限公司 | 通信方法和装置、通信设备、通信系统及存储介质 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020143716A1 (en) * | 2019-01-10 | 2020-07-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatuses for facilitating roaming of terminal device |
| CN112953998A (zh) * | 2019-12-11 | 2021-06-11 | 英特尔公司 | 用于ue不知情的eas ip地址替换的装置和方法 |
| CN113329374A (zh) * | 2017-01-05 | 2021-08-31 | 华为技术有限公司 | 用于应用友好型协议数据单元会话管理的系统和方法 |
| CN116939585A (zh) * | 2022-03-29 | 2023-10-24 | 中国移动通信有限公司研究院 | 一种分流处理方法、设备及存储介质 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114503536B (zh) * | 2019-08-09 | 2023-10-27 | Lg电子株式会社 | 与应用服务器的改变有关的通信 |
| KR20240109869A (ko) * | 2023-01-05 | 2024-07-12 | 삼성전자주식회사 | 홈 라우팅 로밍 단말의 에지 트래픽 경로 관리 정보 제공 방법 |
-
2023
- 2023-01-06 CN CN202310019320.0A patent/CN118317289A/zh active Pending
- 2023-12-29 EP EP23914606.1A patent/EP4637194A4/en active Pending
- 2023-12-29 KR KR1020257025746A patent/KR20250130656A/ko active Pending
- 2023-12-29 WO PCT/CN2023/143433 patent/WO2024146475A1/zh not_active Ceased
-
2025
- 2025-07-07 US US19/261,644 patent/US20250338112A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113329374A (zh) * | 2017-01-05 | 2021-08-31 | 华为技术有限公司 | 用于应用友好型协议数据单元会话管理的系统和方法 |
| WO2020143716A1 (en) * | 2019-01-10 | 2020-07-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatuses for facilitating roaming of terminal device |
| CN112953998A (zh) * | 2019-12-11 | 2021-06-11 | 英特尔公司 | 用于ue不知情的eas ip地址替换的装置和方法 |
| CN116939585A (zh) * | 2022-03-29 | 2023-10-24 | 中国移动通信有限公司研究院 | 一种分流处理方法、设备及存储介质 |
Non-Patent Citations (2)
| Title |
|---|
| "3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Procedures for the 5G System (5GS); Stage 2 (Release 18)", 3GPP STANDARD; 3GPP TS 23.502, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. V18.0.0, 21 December 2022 (2022-12-21), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, pages 1 - 773, XP052234769 * |
| See also references of EP4637194A1 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4637194A1 (en) | 2025-10-22 |
| EP4637194A4 (en) | 2026-04-22 |
| US20250338112A1 (en) | 2025-10-30 |
| KR20250130656A (ko) | 2025-09-02 |
| CN118317289A (zh) | 2024-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US12598660B2 (en) | Method for selecting relay device, remote device and relay device | |
| WO2023020046A1 (zh) | 一种通信方法及通信装置 | |
| WO2023143212A1 (zh) | 一种通信方法及装置 | |
| CN114268975B (zh) | 一种通信方法及装置 | |
| US20250338112A1 (en) | Communication method, apparatus, and system | |
| CN115884153A (zh) | 通信的方法和装置 | |
| WO2024114288A1 (zh) | 接入网络的方法和通信装置 | |
| WO2023207958A1 (zh) | 策略传输的方法、通信装置和系统 | |
| CN113271561B (zh) | 通信方式的确定方法、装置及存储介质 | |
| CN115776487A (zh) | 数据分流方法、装置、设备及存储介质 | |
| US20240224147A1 (en) | Apparatus and method for inter-plmn handover of home routed session in wireless communication system | |
| WO2025082232A1 (zh) | 一种通信路径确定方法及装置 | |
| WO2024230724A1 (zh) | 一种通信方法及通信装置 | |
| WO2024208017A1 (zh) | 通信方法、通信装置及通信系统 | |
| WO2024152837A1 (zh) | 定位处理方法及装置 | |
| US20260122549A1 (en) | Methods and systems for routing voice call traffic | |
| US20260067756A1 (en) | Seamless roaming solution for 5g capable user equipment (ue) in heterogeneous network environments | |
| WO2025148797A1 (zh) | 通信方法及装置 | |
| WO2024212793A1 (zh) | 通信方法和通信装置 | |
| WO2026045604A1 (zh) | 一种通信方法及装置 | |
| TW202520784A (zh) | 一種會話處理方法及通信裝置 | |
| WO2024067332A1 (zh) | 路径选择方法、信息上报方法及装置 | |
| WO2026073729A1 (en) | Accessing local services via a cag cell | |
| WO2024164640A1 (zh) | 一种通信方法、通信装置及通信系统 | |
| WO2026073730A1 (en) | Accessing local services via a cag cell |
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: 23914606 Country of ref document: EP Kind code of ref document: A1 |
|
| DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 2023914606 Country of ref document: EP |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112025014043 Country of ref document: BR |
|
| ENP | Entry into the national phase |
Ref document number: 2023914606 Country of ref document: EP Effective date: 20250717 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202517072586 Country of ref document: IN |
|
| ENP | Entry into the national phase |
Ref document number: 1020257025746 Country of ref document: KR Free format text: ST27 STATUS EVENT CODE: A-0-1-A10-A15-NAP-PA0105 (AS PROVIDED BY THE NATIONAL OFFICE) |
|
| ENP | Entry into the national phase |
Ref document number: 2023914606 Country of ref document: EP Effective date: 20250717 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023914606 Country of ref document: EP Effective date: 20250717 |
|
| WWP | Wipo information: published in national office |
Ref document number: 1020257025746 Country of ref document: KR |
|
| WWP | Wipo information: published in national office |
Ref document number: 202517072586 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023914606 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 112025014043 Country of ref document: BR Kind code of ref document: A2 Effective date: 20250707 |