CN116261123A - Communication method, device and system for network interview - Google Patents

Communication method, device and system for network interview Download PDF

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Publication number
CN116261123A
CN116261123A CN202111500261.6A CN202111500261A CN116261123A CN 116261123 A CN116261123 A CN 116261123A CN 202111500261 A CN202111500261 A CN 202111500261A CN 116261123 A CN116261123 A CN 116261123A
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entity
local
network
smf entity
smf
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Chinese (zh)
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尹君
陈洁
欧建南
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/50—Service provisioning or reconfiguring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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

Abstract

The disclosure relates to a communication method, device and system for network mutual access, and relates to the technical field of communication. The communication method for the network interview comprises the following steps: under the condition that a terminal initiates a service for accessing a remote network, a local SMF entity judges whether the service belongs to the service range according to the identification information of the service to be accessed by the terminal; under the condition that the service does not belong to the self range, the local SMF entity sends identification information to the AMF entity; and the local SMF entity establishes mutual access communication between the remote network and the local network with the visiting SMF entity according to the related information of the visiting SMF entity selected according to the identification information and returned by the AMF entity. According to the technical scheme, the terminal can access the local network and the remote network simultaneously under the non-roaming scene, and the dependence on an enterprise internal network is avoided, so that the communication performance is improved.

Description

Communication method, device and system for network interview
Technical Field
The disclosure relates to the field of communication technologies, and in particular, to a network mutual access communication method, a network mutual access communication device and a network mutual access communication system.
Background
When BP/ULCL (Branching Point/Uplink Classifier, branching node/uplink classifier) offloading is established in a non-roaming scenario defined by 3GPP (3 rd Generation Partnership Project, third generation partnership project), the SMF (Session Management Function ) where the user session is established needs to be able to control all the UPFs (User plane Function, user plane functions) involved at the same time. When the BP/ULCL is established in the roaming scene, the BP/ULCL is established through the cooperation of the I-SMF (Intermediate-SMF) of the visiting place and the SMF of the home place. However, if the user is in a non-roaming scenario, the terminal is visiting both the remote visited network and the local home network at home, the 3GPP standard is not involved.
For example, in an actual 5G network deployment, some enterprise customers have multi-park networking requirements. For example, a customer may have two enterprise parks in guangzhou and Beijing, and a terminal located in guangzhou and having a home of guangzhou may need to access both the enterprise intranet of the local guangzhou park and the enterprise intranet of the Beijing park.
In the related art, the mutual access is realized through the internal network of the client network, or the networks on two sides are communicated through a fixed network private line.
Disclosure of Invention
The inventors of the present disclosure found that the above-described related art has the following problems: if there is no interworking between the two networks and access is not possible through the public network, cross-regional access cannot be achieved, resulting in reduced communication performance.
In view of this, the present disclosure proposes a communication technical solution for network interview, which can enable a terminal to access a local network and a remote network simultaneously in a non-roaming scenario, without relying on an internal network of an enterprise, thereby improving communication performance.
According to some embodiments of the present disclosure, there is provided a communication method for network interview, including: under the condition that a terminal initiates a service for accessing a remote network, a local SMF entity judges whether the service belongs to the service range according to the identification information of the service to be accessed by the terminal; in case the service does not belong to its own range, the local SMF entity sends identification information to the AMF (Access and Mobility Management Function ) entity; and the local SMF entity establishes mutual access communication between the remote network and the local network with the visiting SMF entity according to the related information of the visiting SMF entity selected according to the identification information and returned by the AMF entity.
In some embodiments, the communication method of the network interview further includes: and the local SMF entity receives the related information of the service which is initiated to access the remote network for the first time by the terminal reported by the local UPF entity, and reports the related information according to the detection strategy issued by the local SMF entity.
In some embodiments, the communication method of the network interview further includes: a local SMF entity initiates a policy update request to a PCF (Policy Control Function ) entity; the local SMF entity receives the TSC (Traffic Steering Control, traffic steering control policy) returned by the PCF entity, where the TSC includes identification information and routing information.
In some embodiments, establishing mutual access communications with the visited SMF entity for the remote network and the home network includes: the local SMF entity and the visiting place SMF entity establish BP/ULCL split flow so that the terminal accesses the local network through the local UPF entity and accesses the remote network through the visiting place UPF entity.
In some embodiments, the establishing of the branch node/uplink classifier BP/ul cl split by the local SMF entity with the visited SMF entity includes: the local SMF entity sends a session creation request to the visiting SMF entity, wherein the session creation request comprises identification information; under the condition that the visiting place SMF entity returns a session creation response, the local SMF entity initiates a shunt establishment request to the BP/ULCL, and the session creation response is used for identifying that the visiting place SMF entity and a UPF entity of a visiting place anchor point complete session establishment; the local SMF entity and the visiting SMF entity conduct session updating.
In some embodiments, the session update by the local SMF entity and the visited SMF entity comprises: the local SMF entity initiates a first session update request to a UPF entity of the local anchor point, wherein the first session update request comprises the relevant information of BP/ULCL; the local SMF entity initiates a second session updating request to the visiting SMF entity, wherein the second session updating request comprises the relevant information of BP/ULCL; the local SMF entity receives a second session update response returned by the visiting SMF entity, wherein the second session update response is used for identifying that the visiting SMF entity initiates the UPF entity session modification of the visiting anchor point; the local SMF entity replies a first session update response to the AMF entity.
In some embodiments, the identification information of the traffic includes DNAI (Data Network Access Identifier ), DNN (Data Network Name, data network name) or nsai (Network Slice Selection Assistance Information ).
According to further embodiments of the present disclosure, there is provided a communication device for network interview, the communication device being provided at a local SMF entity, comprising: the judging unit is used for judging whether the service belongs to the service range according to the identification information of the service to be accessed by the terminal under the condition that the terminal initiates the service accessing the remote network; a sending unit, configured to send identification information to an AMF entity when the service does not belong to the self range; and the establishing unit is used for establishing mutual access communication between the remote network and the local network with the visiting place SMF entity according to the related information of the visiting place SMF entity selected according to the identification information and returned by the AMF entity.
In some embodiments, the communication device of the network interview further comprises: and the receiving unit is used for receiving the related information of the service which is initiated to access the remote network for the first time by the terminal reported by the local UPF entity, and reporting the related information according to the detection strategy issued by the local SMF entity by the local UPF entity.
In some embodiments, the sending unit initiates a policy update request to the PCF entity; the receiving unit receives the TSC returned by the PCF entity, and the TSC comprises identification information and routing information.
In some embodiments, the establishing unit establishes a BP/ULCL split with the visited SMF entity so that the terminal accesses the local network through the local UPF entity and accesses the remote network through the visited UPF entity.
In some embodiments, the sending unit sends a session creation request to the visited SMF entity, where the session creation request includes identification information; under the condition that the SMF entity at the visit place returns a session establishment response, the sending unit initiates a stream establishment request to the BP/ULCL, and the session establishment response is used for identifying that the SMF entity at the visit place and the UPF entity at the anchor point at the visit place complete the session establishment; the establishing unit and the visiting SMF entity perform session updating.
In some embodiments, the sending unit initiates a first session update request to a UPF entity of the local anchor, the first session update request including information about the BP/ULCL; the sending unit initiates a second session update request to the visiting SMF entity, wherein the second session update request comprises the relevant information of BP/ULCL; the receiving unit receives a second session update response returned by the visiting SMF entity, wherein the second session update response is used for identifying that the visiting SMF entity initiates the UPF entity session modification of the visiting anchor point; the sending unit replies a first session update response to the AMF entity.
In some embodiments, the identification information of the service includes DNAI, DNN, or nsai.
According to still further embodiments of the present disclosure, there is provided a communication apparatus for network interview, including: a memory; and a processor coupled to the memory, the processor configured to perform the method of communicating network interviews in any of the embodiments described above based on instructions stored in the memory device.
According to still further embodiments of the present disclosure, there is provided a communication system for network interview, including: an SMF entity for executing the communication method of the network interview in any one of the above embodiments; the AMF entity is used for selecting a visiting place SMF entity according to the identification information of the service to be accessed by the terminal sent by the local SMF entity; and the visiting place SMF entity is used for establishing mutual visit communication between the remote network and the local network with the local SMF entity.
According to still further embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the communication method of the network interview in any of the above embodiments.
In the above embodiment, the identification information of the service is used as the judging condition for the AMF entity to select the visited SMF entity, and the AMF entity may select the corresponding visited SMF entity as the I-SMF entity in the non-roaming scenario according to the identification information. Therefore, the terminal can access the local network and the remote network simultaneously under the non-roaming scene without depending on an enterprise internal network, thereby improving the communication performance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 illustrates a flow chart of some embodiments of a communication method of network interview of the present disclosure;
fig. 2 illustrates a signaling diagram of some embodiments of a communication method of network interview of the present disclosure;
fig. 3 illustrates a schematic diagram of some embodiments of a communication method of network interview of the present disclosure;
fig. 4 illustrates a block diagram of some embodiments of a communication device of the present disclosure for network interviews;
fig. 5 illustrates a block diagram of further embodiments of a communication device of the present disclosure for network interview;
fig. 6 illustrates a block diagram of still further embodiments of a communication device of the present disclosure for network interview;
fig. 7 illustrates a schematic diagram of some embodiments of a communication system of the present disclosure for network interviews.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
As described above, there is no procedure for establishing BP/ULCL splitting in the non-roaming scenario in the 5G core network signaling procedure. Therefore, in the scenario of cross-regional multi-park networking requirements, home terminals are typically employed to access the local network through a home local core network, and the networks of each park are accessed through connections between the enterprise's own networks (e.g., VPN (Virtual Private Network, virtual private network), enterprise internetworking, etc.).
However, if there is no interworking between the two networks and access is not possible through the public network, then cross-regional access cannot be achieved.
Aiming at the technical problems, the technical scheme can realize that the terminal accesses the local network and the remote network simultaneously by utilizing the shunting function of BP/ULCL under the non-roaming scene without depending on the internal network of an enterprise. For example, the technical solution of the present disclosure may be implemented by the following embodiments.
Fig. 1 illustrates a flow chart of some embodiments of a communication method of network interview of the present disclosure.
As shown in fig. 1, in step 110, in the case where the terminal initiates a service that accesses the remote network, the local SMF entity determines, according to the identification information of the service to be accessed by the terminal, whether the service belongs to its own service range. For example, the identification information of the service includes DNAI, DNN, or nsai.
In some embodiments, the local SMF entity receives the related information that the terminal reported by the local UPF entity initiates the service accessing the remote network for the first time. And the local UPF entity reports according to the detection strategy issued by the local SMF entity.
In some embodiments, the local SMF entity initiates a policy update request to the PCF entity; and the local SMF entity receives the TSC returned by the PCF entity, wherein the TSC comprises identification information and routing information. For example, the policy update request is a SM Policy Association Update (session management policy federation update) message.
For example, the terminal has completed network registration and session establishment with the UPF entity, PSA1 UPF, of the local PSA (PDU Session Anchor, protocol data unit session anchor); the terminal initiates access to a service in a remote DN (Data Network) -DN 2; the UPF entity detects that the terminal accesses the service in DN2 for the first time and reports the service to a local SMF entity, namely H-SMF; the H-SMF initiates SM Policy Association Update to the PCF entity; the PCF entity replies with a new policy of H-SMF-TSC.
In step 120, in the case where the service does not belong to its own range, the local SMF entity sends identification information to the AMF entity. For example, the local SMF entity sends an nsmf_pduse_smcontextstatusnotify message to the AMF entity, where the nsmf_pduse_smcontextstatusnotify message carries DNAI to be accessed by the terminal and is not in its own service scope.
In some embodiments, in the case that the H-SMF determines that the DNAI to which the service to be accessed by the terminal belongs is not in the self service range, the H-SMF initiates a nsmf_pduse_smcontextstatusnotify message to the AMF entity, where the DNAI to be accessed by the terminal is carried and is not in the self service range; the AMF entity selects a visiting place SMF entity-R-SMF according to DNAI; the AMF entity initiates an nsmf_pduse_ UpdateSMContext Request (slice management function_protocol data unit session_update session content request) message to the H-SMF, wherein the message carries the related information of the R-SMF.
In step 130, the local SMF entity establishes a mutual access communication between the remote network and the local network with the visited SMF entity according to the information about the visited SMF entity selected according to the identification information and returned by the AMF entity.
In some embodiments, the local SMF entity establishes a BP/ul cl split with the visited SMF entity so that the terminal accesses the local network through the local UPF entity and accesses the remote network through the visited UPF entity.
For example, the local SMF entity sends a session creation request to the visited SMF entity, where the session creation request includes identification information; under the condition that the visiting place SMF entity returns a session creation response, the local SMF entity initiates a shunt establishment request to the BP/ULCL, and the session creation response is used for identifying that the visiting place SMF entity and a UPF entity of a visiting place anchor point (namely the visiting place UPF entity) complete session establishment; the local SMF entity and the visiting SMF entity conduct session updating.
For example, the H-SMF initiates an nsmf_pduse_create Request message to the R-SMF, where the message carries information (such as DNAI, etc.) related to establishing the BP/ULCL split; the R-SMF initiates a session establishment flow to a UPF entity of the visiting place PSA, namely PSA2 UPF; after the establishment of the PSA2 UPF session is completed, the R-SMF replies an Nsmf_PDUSion_Create Response message to the H-SMF; the H-SMF initiates a H-SMF Establishes BP/ULCL (local SMF establishes BP/ULCL) flow to the BP/ULCL.
For example, the local SMF entity initiates a first session update request to a local anchor UPF entity (i.e., a local UPF entity), where the first session update request includes information about BP/ul cl; the local SMF entity initiates a second session updating request to the visiting SMF entity, wherein the second session updating request comprises the relevant information of BP/ULCL; the local SMF entity receives a second session update response returned by the visiting SMF entity, wherein the second session update response is used for identifying that the visiting SMF entity initiates the UPF entity session modification of the visiting anchor point; the local SMF entity replies a first session update response to the AMF entity. For example, the second session Update request may be an nsmf_pdustion_update request message.
For example, the H-SMF initiates a session update procedure to the PSA1, carrying BP/ULCL related information; the H-SMF initiates an Nsmf_PDUSion_update request to the R-SMF, wherein the Nsmf_PDUSion_update request carries BP/ULCL related information; R-SMF initiates PSA2 session modification; R-SMF replies H-SMF Nsmf_PDUSion_update response (slice management function_protocol data unit Session_update response); H-SMF replies nsmf_pduse_ UpdateSMContext Response (slice management function_protocol data unit session_update session management content response) to AMF entity; a RAN (Radio Access Network ) side information modification procedure is initiated.
For example, the RAN modification procedure includes: after the cross-domain BP/ULCL is established in the non-roaming scene, the terminal can access DN1 through the path of the base station-BP/ULCL-PSA 1-DN 1, and can also access DN2 through the path of the base station-BP/ULCL-PSA 2-DN 2.
Fig. 2 illustrates a signaling diagram of some embodiments of a communication method of network interview of the present disclosure.
As shown in fig. 2, in event 1, the terminal has completed network registration and session establishment with PSA 1. The terminal and the local data network DN1 can transmit uplink or downlink data through the UPF of the PSA 1.
In event 2, the terminal initiates access to the service in DN2.
In event 3, PSA1 UPF detects that the terminal first accesses the service in DN2 and reports it to the H-SMF.
In event 4, the H-SMF initiates SM Policy Association Update to the PCF entity.
In event 5, the PCF entity replies with a new policy for H-SMF.
In event 6, if the H-SMF determines that the DNAI to which the service to be accessed by the terminal belongs is not in the self service range, the H-SMF initiates an nsmf_pduse_smcontextstatusnotify message to the AMF entity, where the DNAI to be accessed by the terminal is carried and the DNAI is not in the self service range.
In event 7, the AMF entity selects a visited SMF entity, R-SMF, according to DNAI.
In event 8, the AMF entity initiates an Nsmf_PDUSion_ UpdateSMContext Request message to the H-SMF, wherein the message carries the related information of the R-SMF.
In event 9, the H-SMF initiates an Nsmf_PDUSation_Create Request message to the R-SMF, which carries information (e.g., DNAI, etc.) related to establishing BP/ULCL splitting.
In event 10, the R-SMF initiates a session establishment procedure to the PSA2 UPF.
In event 11, after the PSA2 UPF session establishment is completed, the R-SMF replies to the H-SMF with an nsmf_pduse_create Response message.
In event 12, the H-SMF initiates a H-SMF Establishes BP/ULCL flow to the BP/ULCL.
In event 13, the H-SMF initiates a session update procedure to the PSA1, carrying BP/ULCL related information.
In event 14, the H-SMF initiates an Nsmf_PDUSation_ULTAC request to the R-SMF, which carries BP/ULCL related information.
In event 15, the R-SMF initiates a PSA2 session modification.
In event 16, R-SMF replies to H-SMF Nsmf_PDUSion_update response;
in event 17, the H-SMF replies to the AMF entity with Nsmf_PDUSion_ UpdateSMContext Response.
In event 18, a RAN-side information modification procedure is initiated.
After the cross-domain BP/ULCL is established in the non-roaming scene, the terminal can access DN1 through the path of the base station-BP/ULCL-PSA 1-DN 1, and can also access DN2 through the path of the base station-BP/ULCL-PSA 2-DN 2.
In the above embodiment, DNAI is newly added as a judgment condition when the AMF selects the SMF; the SMF entity transmits a data detection rule to the UPF entity, and when the UE accesses a service in a certain non-local network, the UPF entity reports information to the SMF entity to trigger a BP/ULCL establishment flow crossing the SMF entity. The AMF entity may select a corresponding I-SMF entity in a non-roaming scenario according to the information DNN, NSSAI, DNAI, etc.
The BP/ULCL is established by the local SMF entity and the visiting place R-SMF entity, and the terminal can access the local network by the local UPF entity and simultaneously access the remote network by the visiting place UPF entity under the non-roaming scene. And the interconnection between networks of different areas of clients is not needed.
In this way, BP/ULCL can be established by means of a local SMF entity and a remote SMF entity; the AMF entity uses DNAI as one of SMF entity selection conditions to select a corresponding SMF entity.
Fig. 3 illustrates a schematic diagram of some embodiments of a communication method of network interview of the present disclosure.
As shown in fig. 3, in the non-roaming scenario, the AMF entity of the a-province may select the SMF entity of the B-province where the visited network is located in the non-roaming scenario of the a-province terminal according to the information such as DNN, nsai or DNAI. The local SMF entity and the remote SMF entity establish BP/ULCL shunt, and the A-province terminal can access the local network through the UPF entity of the local A-province and simultaneously access the network positioned in the remote B-province through the UPF entity of the visiting place B-province by utilizing the BP/ULCL shunt function.
In the above embodiment, in a non-roaming scenario, the core network split is utilized to realize that the terminal accesses the network under the service areas of different SMF entities simultaneously by using the method of establishing BP/ul cl split between the local SMF entity and the remote SMF entity, between the local UPF entity and the remote UPF entity.
Fig. 4 illustrates a block diagram of some embodiments of a communication device of the present disclosure for network interview.
As shown in fig. 4, the communication device 4 for network interview is disposed in a local SMF entity, and includes: a judging unit 41, configured to judge whether the service belongs to the service range according to the identification information of the service to be accessed by the terminal when the terminal initiates the service accessing the remote network; a sending unit 42, configured to send identification information to the AMF entity if the service does not belong to the self range; and the establishing unit 43 is configured to establish mutual access communication between the remote network and the local network with the visited SMF entity according to the related information of the visited SMF entity selected according to the identification information and returned by the AMF entity.
In some embodiments, the communication device 4 of the network interview further comprises: and the receiving unit 44 is configured to receive information about a service that the terminal reported by the local UPF entity initiates access to the remote network for the first time, where the local UPF entity reports the information according to a detection policy issued by the local SMF entity.
In some embodiments, sending unit 422 initiates a policy update request to the PCF entity; the receiving unit receives the TSC returned by the PCF entity, and the TSC comprises identification information and routing information.
In some embodiments, the establishing unit 434 establishes a BP/ULCL split with the visited SMF entity so that the terminal accesses the local network through the local UPF entity and accesses the remote network through the visited UPF entity.
In some embodiments, the sending unit 42 sends a session creation request to the visited SMF entity, where the session creation request includes identification information; in the case that the visited SMF entity returns a session creation response, the sending unit 42 initiates a shunt setup request to the BP/ULCL, where the session creation response is used to identify that the visited SMF entity and the UPF entity of the visited anchor have completed session setup; the setup unit 43 and the visited SMF entity perform session updates.
In some embodiments, the sending unit 42 initiates a first session update request to the UPF entity of the local anchor, the first session update request including information about the BP/ULCL; the sending unit 42 initiates a second session update request to the visited SMF entity, where the second session update request includes information about BP/ul cl; the receiving unit 44 receives a second session update response returned by the visited SMF entity, where the second session update response is used to identify that the visited SMF entity initiates a UPF entity session modification of the visited anchor point; the sending unit 42 replies to the AMF entity with a first session update response.
In some embodiments, the identification information of the service includes DNAI, DNN, or nsai.
Fig. 5 illustrates a block diagram of further embodiments of a communication device of the present disclosure for network interview.
As shown in fig. 5, the communication device 5 of the network interview of this embodiment includes: a memory 51 and a processor 52 coupled to the memory 51, the processor 52 being configured to perform the method of communication of network interviews in any one of the embodiments of the present disclosure based on instructions stored in the memory 51.
The memory 51 may include, for example, a system memory, a fixed nonvolatile storage medium, and the like. The system memory stores, for example, an operating system, application programs, boot Loader, database, and other programs.
Fig. 6 illustrates a block diagram of still further embodiments of a communication device of the present disclosure for network interview.
As shown in fig. 6, the communication device 6 of the network interview of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610, the processor 620 being configured to perform the method of communication of network interviews in any of the foregoing embodiments based on instructions stored in the memory 610.
The memory 610 may include, for example, system memory, fixed nonvolatile storage media, and the like. The system memory stores, for example, an operating system, application programs, boot Loader, and other programs.
The communication device 6 for network interview may also include an input-output interface 630, a network interface 640, a storage interface 650, and the like. These interfaces 630, 640, 650 and the memory 610 and processor 620 may be connected by, for example, a bus 660. The input/output interface 630 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, a touch screen, a microphone, and a speaker. Network interface 640 provides a connection interface for various networking devices. The storage interface 650 provides a connection interface for external storage devices such as SD cards, U-discs, and the like.
Fig. 7 illustrates a schematic diagram of some embodiments of a communication system of the present disclosure for network interviews.
As shown in fig. 7, the communication system 7 for network interview includes: a local SMF entity 71 for performing the communication method of network interview in any of the above embodiments; an AMF entity 72, configured to select a visited SMF entity 73 according to the identification information of the service to be accessed by the terminal sent by the local SMF entity 71; the visited SMF entity 73 is configured to establish a mutual access communication between the remote network and the local network with the local SMF entity 72.
It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media including, but not limited to, disk storage, CD-ROM, optical storage, and the like, having computer-usable program code embodied therein.
Up to this point, the communication method of the network interview, the communication apparatus of the network interview, and the communication system of the network interview according to the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
The methods and systems of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (12)

1. A communication method for network interview, comprising:
under the condition that a terminal initiates a service for accessing a remote network, a local Session Management Function (SMF) entity judges whether the service belongs to a self service range according to identification information of the service to be accessed by the terminal;
under the condition that the service does not belong to the self range, the local SMF entity sends the identification information to an access and mobility management function (AMF) entity;
and the local SMF entity establishes mutual access communication between the remote network and the local network with the visiting SMF entity according to the related information of the visiting SMF entity selected according to the identification information and returned by the AMF entity.
2. The communication method according to claim 1, further comprising:
the local SMF entity receives the related information of the service of the terminal for initiating access to the remote network for the first time, which is reported by the local user plane function entity UPF entity, and the local UPF entity reports according to the detection strategy which is issued by the local SMF entity.
3. The communication method according to claim 2, further comprising:
the local SMF entity initiates a policy update request to a policy control function PCF entity;
and the local SMF entity receives a flow guiding control strategy TSC returned by the PCF entity, wherein the TSC comprises the identification information and the routing information.
4. The communication method of claim 1, wherein the establishing a mutual-access communication of the remote network and a local network with the visited SMF entity comprises:
and the local SMF entity and the visiting place SMF entity establish branch node/uplink classifier BP/ULCL split flow so that the terminal accesses the local network through the local UPF entity and accesses the remote network through the visiting place UPF entity.
5. The communication method of claim 4, wherein the establishing of the branch node/uplink classifier BP/ul cl split by the local SMF entity with the visited SMF entity comprises:
the local SMF entity sends a session creation request to the visiting SMF entity, wherein the session creation request comprises the identification information;
under the condition that the visiting place SMF entity returns a session creation response, the local SMF entity initiates a shunt establishment request to the BP/ULCL, wherein the session creation response is used for identifying that the visiting place SMF entity and a UPF entity of a visiting place anchor point complete session establishment;
and the local SMF entity and the visiting SMF entity perform session updating.
6. The communication method of claim 5, wherein the session update by the local SMF entity and the visited SMF entity comprises:
the local SMF entity initiates a first session update request to a UPF entity of a local anchor point, wherein the first session update request comprises the relevant information of the BP/ULCL;
the local SMF entity initiates a second session update request to the visiting SMF entity, wherein the second session update request comprises the relevant information of the BP/ULCL;
the local SMF entity receives a second session update response returned by the visiting SMF entity, wherein the second session update response is used for identifying that the visiting SMF entity initiates the UPF entity session modification of the visiting anchor point;
the local SMF entity replies a first session update response to the AMF entity.
7. The communication method according to any of claims 1-6, wherein the identification information of the service comprises a data network access identifier DNAI, a data network name DNN or network slice selection assistance information nsaai.
8. A communication device for network interview, the communication device being provided at a local session management function SMF entity, comprising:
the judging unit is used for judging whether the service belongs to the service range of the terminal according to the identification information of the service to be accessed by the terminal under the condition that the terminal initiates the service accessing the remote network;
a sending unit, configured to send the identification information to an AMF entity when the service does not belong to the self range;
and the establishing unit is used for establishing mutual access communication between the remote network and the local network with the visiting place SMF entity according to the related information of the visiting place SMF entity selected according to the identification information and returned by the AMF entity.
9. The communication device of claim 8, further comprising:
and the receiving unit is used for receiving the related information of the service which is initiated to access the remote network for the first time by the terminal and reported by the local user plane function entity UPF entity, and the local UPF entity reports the related information according to the detection strategy issued by the local SMF entity.
10. A communication device for network interview, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of communication of network interviews of any one of claims 1-7 based on instructions stored in the memory.
11. A communication system for network interview, comprising:
a local session management function, SMF, entity for performing the communication method of network interview according to any one of claims 1-7;
the mobile management function AMF entity is used for selecting a visiting place SMF entity according to the identification information of the service to be accessed by the terminal sent by the local SMF entity;
and the visiting place SMF entity is used for establishing mutual visit communication between the remote network and the local network with the local SMF entity.
12. A non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the communication method of network interview of any one of claims 1-7.
CN202111500261.6A 2021-12-09 2021-12-09 Communication method, device and system for network interview Pending CN116261123A (en)

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Application Number Priority Date Filing Date Title
CN202111500261.6A CN116261123A (en) 2021-12-09 2021-12-09 Communication method, device and system for network interview

Publications (1)

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