CN115604753A - Session establishing method, device, system, electronic equipment and storage medium - Google Patents

Session establishing method, device, system, electronic equipment and storage medium Download PDF

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Publication number
CN115604753A
CN115604753A CN202110777667.2A CN202110777667A CN115604753A CN 115604753 A CN115604753 A CN 115604753A CN 202110777667 A CN202110777667 A CN 202110777667A CN 115604753 A CN115604753 A CN 115604753A
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China
Prior art keywords
network
dnn
session
user equipment
session establishment
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CN202110777667.2A
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Chinese (zh)
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朱春晖
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Spreadtrum Semiconductor Nanjing Co Ltd
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Spreadtrum Semiconductor Nanjing Co Ltd
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Priority to CN202110777667.2A priority Critical patent/CN115604753A/en
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    • 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
    • H04W28/0289—Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

Abstract

The invention discloses a session establishing method, a session establishing device, a session establishing system, electronic equipment and a storage medium. The session establishment method comprises the following steps: responding to a PDU session establishment request sent by user equipment, and determining whether a first DNN contained in the PDU session establishment request carries a network universal identifier or not; under the condition that the first DNN is determined to carry the network universal identification, determining whether the data traffic of the user plane function network element is greater than a traffic threshold value; and under the condition that the data flow of the user plane function network element is determined to be larger than the flow threshold value, indicating the user equipment to establish session connection with the data network through the local network. By session shunting, the pressure of the user plane functional network element is reduced, and the congestion of user equipment is avoided.

Description

Session establishing method, device, system, electronic equipment and storage medium
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a session establishment method, apparatus, system, electronic device, and storage medium.
Background
A User Plane Function (UPF) network element is the most critical network element of a core network and is mainly responsible for routing and forwarding related functions of data packets of a user plane of the core network. In the prior art, when a user plane functional network element is overloaded, packet loss is performed, a non-priority data packet is discarded first, and then a priority data packet is discarded, so that user experience is poor.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a session establishment method, apparatus, system, electronic device, and storage medium, in order to overcome the defects in the prior art that when a user plane functional network element is overloaded, packet loss is executed, and user experience is not good.
The invention solves the technical problems through the following technical scheme:
in a first aspect, a session establishment method is provided, which is applied to a core network, where the core network includes a user plane function network element; the session establishment method comprises the following steps:
responding to a PDU (Packet Data Unit) session establishment request sent by user equipment, and determining whether a first DNN (network universal identifier) contained in the PDU session establishment request carries a network universal identifier and whether the Data traffic of the user plane function network element is greater than a traffic threshold value;
and under the condition that the first DNN (Data Network Name) carries a Network universal identifier and the Data traffic of the user plane function Network element is greater than a traffic threshold value, indicating the user equipment to establish session connection with the Data Network through the local Network.
Optionally, determining whether the first DNN carries a network common identifier includes:
and determining whether the first DNN carries a network universal identifier or not according to the network address information of the first DNN.
Optionally, instructing the user equipment to establish a session connection with the data network through the local network includes:
sending a session release instruction to the user equipment, wherein the session release instruction is used for instructing the user equipment to send a second DNN;
and responding to a second DNN sent by the user equipment, and establishing session connection between the user equipment and the data network according to the network address information of the local network carried by the second DNN.
Optionally, the method further comprises:
determining whether session connection capable of being unloaded exists or not under the condition that the data flow of the user plane function network element is determined to be larger than a flow threshold value;
in the case that it is determined that an offloadable session connection exists, sending a session release instruction to a user equipment corresponding to the offloadable session connection to instruct the user equipment corresponding to the offloadable session connection to establish a session connection with a data network through a local network.
In a second aspect, a session establishment method is provided, which is applied to a user equipment, and the session establishment method includes:
sending a PDU session establishment request to a core network, wherein the PDU session establishment request comprises a first DNN (digital network node), and the first DNN carries a network universal identifier;
sending a PDU session reestablishment request to the core network under the condition that a session release instruction returned by the core network is received, wherein the PDU session reestablishment request comprises a second DNN, the second DNN carries network address information of a local network, and the session release instruction is generated by the core network under the condition that the first DNN carries a network universal identifier and the data traffic of a user plane function network element of the core network is larger than a traffic threshold value.
In a third aspect, a session establishment method is provided, which is applied to a 5G network, where the 5G network includes a user equipment and a core network, and the core network includes a user plane function network element; the session establishment method comprises the following steps:
the user equipment sends a PDU session establishment request to the core network, wherein the PDU session establishment request comprises a first DNN, and the first DNN carries a network universal identifier;
the core network determines whether a first DNN contained in the PDU session establishment request carries a network universal identifier and whether the data traffic of the user plane function network element is greater than a traffic threshold;
and the core network instructs the user equipment to establish session connection with the data network through the local network under the condition that the first DNN is determined to carry the network universal identification and the data traffic of the user plane function network element is greater than the traffic threshold.
In a fourth aspect, a session establishing apparatus is provided, which is applied to a core network, where the core network includes a user plane function network element; the session establishing device comprises:
a determining module, configured to determine, in response to a PDU session establishment request sent by user equipment, whether a first DNN included in the PDU session establishment request carries a network common identifier and whether a data traffic of the user plane functional network element is greater than a traffic threshold;
and the indicating module is used for indicating the user equipment to establish session connection with the data network through the local network under the condition that the first DNN is determined to carry the network universal identification and the data traffic of the user plane function network element is greater than the traffic threshold.
Optionally, when determining whether the first DNN carries a network generic identity, the determining module is configured to:
and determining whether the first DNN carries a network universal identifier or not according to the network address information of the first DNN.
Optionally, the indication module includes:
a sending unit, configured to send a session release instruction to user equipment, where the session release instruction is used to instruct the user equipment to send a second DNN;
and the establishing unit is used for responding to a second DNN sent by the user equipment and establishing the session connection between the user equipment and the data network according to the network address information of the local network carried by the second DNN.
Optionally, the method further comprises: a releasing module;
the determining module is further configured to determine whether an offloadable session connection exists or not when it is determined that the data traffic of the user plane function network element is greater than a traffic threshold; and in the case that it is determined that there is a session connection that can be offloaded, invoking the release module;
the release module is used for sending a session release instruction to the user equipment corresponding to the session connection capable of being unloaded so as to instruct the user equipment corresponding to the session connection capable of being unloaded to establish the session connection with the data network through the local network.
In a fifth aspect, a session establishing apparatus is provided, which is applied to a user equipment, and the session establishing apparatus includes:
a first sending module, configured to send a PDU session establishment request to a core network, where the PDU session establishment request includes a first DNN, and the first DNN carries a network universal identifier;
a second sending module, configured to send a PDU session reestablishment request to the core network when a request for a session release instruction returned by the core network is received, where the PDU session reestablishment request includes a second DNN, the second DNN carries network address information of a local network, and the session release instruction is generated by the core network when it is determined that the first DNN carries a network universal identifier and a data traffic of a user plane function network element of the core network is greater than a traffic threshold.
A sixth aspect provides a session establishment system, which is applied to a 5G network, where the 5G network includes a user equipment and a core network, and the core network includes a user plane functional network element;
the user equipment is used for sending a PDU session establishment request to the core network, wherein the PDU session establishment request comprises a first DNN, and the first DNN carries a network universal identifier;
the core network determines whether a first DNN contained in the PDU session establishment request carries a network universal identifier and whether the data traffic of the user plane function network element is greater than a traffic threshold;
and the core network instructs the user equipment to establish session connection with the data network through the local network under the condition that the first DNN carries the network universal identification and the data traffic of the user plane function network element is greater than the traffic threshold.
In a seventh aspect, an electronic device is provided, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the method of any one of the above when executing the computer program.
In an eighth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any of the above.
The positive progress effects of the invention are as follows: in the embodiment of the invention, when determining that the user plane function network element of the core network is overloaded or is about to be overloaded, packet loss is not executed, but the session is shunted to the local network, and the local network transmits the user data packet, so that the pressure of the user plane function network element is reduced, the congestion of user equipment is avoided, and compared with the mode that the packet loss is directly executed when the user plane function network element is overloaded in the prior art, the user experience is better.
Drawings
Fig. 1 is a schematic diagram illustrating a service architecture of a 5G network according to an exemplary embodiment of the present invention;
fig. 2a is a flowchart illustrating a session establishment method according to an exemplary embodiment of the present invention;
fig. 2b is a flowchart illustrating a session release in a session establishment procedure according to an exemplary embodiment of the present invention;
fig. 3a is a flowchart illustrating another session establishment method according to an exemplary embodiment of the present invention;
fig. 3b is a diagram illustrating a data packet transmission scenario after a session is established by using a session establishment method according to an exemplary embodiment of the present invention;
fig. 4 is a flowchart illustrating another session establishment method according to an exemplary embodiment of the present invention;
fig. 5 is a schematic block diagram of a session establishing apparatus according to an exemplary embodiment of the present invention;
fig. 6 is a block diagram of another session establishment apparatus according to an exemplary embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device according to an exemplary embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
The 5G network transfers data sent and received between the terminal (UE) and the data network in the form of data packets, which are called PDUs. The 5G network refers to a path established between the terminal and the data network (also referred to as an external network) as a PDU Session. The data network may include, but is not limited to, a broadband service network, the internet, and the like.
Fig. 1 is a schematic view of a service architecture of a 5G network according to AN exemplary embodiment of the present invention, where the 5G network includes a core network, AN (R) AN (access network), and a UE (user equipment). The core network includes network elements such as NSSF (network slice selection function), NRF (network resource function), UDM (unified data management function), PCF (policy control function), NEF (network open function), AUSF (authentication server function), AMF (access mobility management function), SMF (session management function), and UPF (user plane function).
The PDU Session establishment procedure is described in detail below with reference to fig. 1.
Fig. 2a is a flowchart of a session establishment method according to an exemplary embodiment of the present invention, the method is applied to a core network, and referring to fig. 2a, the session establishment method includes the following steps:
step 201, responding to a PDU session establishment request sent by a user equipment, determining whether a first DNN included in the PDU session establishment request carries a network universal identifier.
The user equipment is a device capable of accessing to a 5G network, and may be but is not limited to a mobile phone, a computer, a vehicle-mounted terminal, an intelligent wearable device, and the like.
In the 5G scenario, the user equipment is allowed to obtain services both by connecting to the data network through the core network and by connecting locally to the data network.
When the user equipment has a service requirement, the user equipment initiates a PDU Session establishment request, where the PDU Session establishment request includes parameters such as DNN, PDU Session identifier (this identifier is unique for each user equipment), NSSAI (Network Slice Selection Assistance Information), SSC mode (Session and service continuity mode), and the like.
The core network determines a destination data network of the user equipment through the DNN, and the destination data network is also a data network to which the user equipment is connected in advance. The DNN includes: (1) Network address information, such as a network ID (identification number), which indicates a data network, is optional; (2) The operator ID, which part indicates to which operator it belongs, is optional.
In one embodiment, the core network may determine, through the network address information of the first DNN, whether the first DNN carries a network-generic identity that characterizes whether the current user equipment is allowed to obtain services by connecting to the data network through the core network, or by connecting to the data network through the local network.
Determining whether the first DNN carries a network universal identifier by judging whether the network address information contains the identifier "general", and if the network address information of the first DNN contains the identifier "general", determining that the first DNN carries the network universal identifier; and if the network address information of the first DNN does not contain the identifier 'general', determining that the first DNN does not carry the network universal identifier.
For example, assuming that the network address information of the first DNN is denoted as general operator.com, which contains the identifier "general", it is determined that the first DNN carries a network-generic identifier, indicating that the user equipment that sent the PDU session setup request containing the first DNN is now allowed to connect to the data network both through the core network and through the local network. Assuming that the network address information of the first DNN is represented as local.
In step 201, if it is determined that the first DNN included in the PDU session establishment request carries a network common identifier, which indicates that the ue is currently allowed to connect to the data network through the core network and also allowed to connect to the data network through the local network, then step 202 is performed; if it is determined that the first DNN included in the PDU session establishment request does not carry the network common identifier, step 204 is performed, and the core network directly establishes a connection between the ue and the data network.
Step 202, under the condition that it is determined that the first DNN carries the network common identifier, further determining whether the data traffic of the user plane function network element is greater than a traffic threshold.
The User Plane Function (UPF) network element is the most critical network element of the core network, and is mainly responsible for routing and forwarding related functions of data packets of the user plane of the core network. All PDUs must be forwarded via the user plane functional network element before they can flow to the data network. The edge computing platform of the internet manufacturer needs to be docked with the UPFs of the various operators and then connected to the base stations of the different operators through the UPFs, so as to deliver the service to each user equipment.
Under the condition that the user equipment is allowed to be connected to the data network through the core network at present and is also allowed to be connected to the data network through the local network, the core network can further judge whether the data traffic of the user plane function network element is larger than a traffic threshold value or not; if the data traffic of the user plane functional network element is greater than the traffic threshold, it indicates that the user plane functional network element is overloaded or is about to be overloaded, the load of the user plane functional network element is severe, and the core network cannot access the user equipment any more, then step 203 is executed. If the data traffic of the user plane functional network element is not greater than the traffic threshold, which indicates that the user plane functional network element is not overloaded, and the core network can be accessed to the user equipment again, then step 204 is executed.
Wherein, the flow threshold value can be set according to the actual situation.
Step 203, under the condition that the data flow of the user plane function network element is determined to be larger than the flow threshold, indicating the user equipment to establish session connection with the data network through the local network.
The user equipment is instructed to establish a session connection with the data network through the local network, i.e. the user equipment is instructed to establish a local PDU session, and data packets of the user equipment are transmitted to the data network through the local network.
In one embodiment, when the user equipment is instructed to establish session connection with the data network through the local network, the core network sends a session release instruction to the user equipment, wherein the session release instruction is used for instructing the user equipment to send the second DNN; and the core network establishes session connection between the user equipment and the data network according to the network address information of the local network carried by the second DNN under the condition that the second DNN sent by the user equipment is received, namely, the session connection between the user equipment and the data network is established through the local network. The session release instruction is generated by the core network when determining whether the first DNN contained in the PDU session establishment request carries the network universal identifier and the data traffic of the user plane function network element is greater than the traffic threshold.
And step 204, establishing session connection between the user equipment and the data network.
In step 204, a session connection between the ue and the data network is established through the core network, that is, a PDU session is established.
In one embodiment, in the case that it is determined that the data traffic of the user plane functionality network element is greater than the traffic threshold, the core network further determines whether an offloadable session connection exists, i.e. determines whether the user equipment having established a session is allowed to connect to the data network through the core network as well as through the local network. In the event that it is determined that an offloadable session connection exists, sending a session release instruction to the user equipment corresponding to the offloadable session connection to instruct the user equipment to establish a session connection with the data network through the local network.
For example, assuming that the user equipment a and the user equipment B have established a connection with the data network through the core network and the user equipment a is allowed to connect to the data network through the core network and also allowed to connect to the data network through the home network, when the core network determines that the data traffic of the user plane function network element is greater than the traffic threshold, referring to fig. 2B, the user equipment a is instructed by the SMF to release the core network PDU session and establish the home network PDU session to reduce the load on the user plane function network element. The embodiment of the invention is suitable for a scene that the first DNN of the user equipment requesting to establish the session connection carries the network universal identification, and is also suitable for a scene that the first DNN of the user equipment requesting to establish the session connection does not carry the network universal identification.
When determining whether the session connection capable of being unloaded exists, the core network can determine whether the first DNN of the user equipment for establishing the session connection carries the network universal identification.
In one embodiment, the priorities of various types of session connections can be set through the background of the base station or the eRG, and when the session connections are unloaded, the unloading is carried out according to the priorities.
In another embodiment, the core network may also perform the step of determining whether the data traffic of the user plane function network element is greater than the traffic threshold, and then perform the step of determining whether the first DNN carries the network universal identifier.
Fig. 3a is a flowchart illustrating another session establishment method according to an exemplary embodiment of the present invention, where the method is applied to a user equipment, and referring to fig. 3a, the session establishment method includes the following steps:
step 301, sending a PDU session establishment request to a core network, where the PDU session establishment request includes a first DNN, and the first DNN carries a network universal identifier.
The user equipment may set a plurality of DNNs, such as a first DNN, which carries a network generic identity; a second DNN that carries network address information for a local network; a third DNN, which carries network address information of the core network. The user equipment may select and send a corresponding DNN to the core network according to the actual scenario.
Step 302, sending a PDU session reestablishment request to the core network upon receiving a session release command returned by the core network.
If the ue does not receive the session release instruction, it indicates that the core network successfully establishes the session connection between the ue and the data network, and referring to the solid transmission path in fig. 3b, the data packet sent by the subsequent ue is transmitted to the data network through the core network.
If the user equipment receives the session release instruction, probably because the data flow of the user plane function network element of the core network is greater than the flow threshold value, the user equipment sends a PDU session reestablishment request to the core network. The PDU session reestablishment request includes a second DNN, where the second DNN carries network address information of a local network, so that after authorization of AMF and SMF passing through a core network, the UE establishes a session connection to the data network through the local network, see a dotted transmission path in fig. 3b, and a data packet sent by a subsequent UE is transmitted to the data network through the local network, such as an Evolved home Gateway (edrg).
The session release instruction is generated by the core network when the first DNN is determined to carry the network universal identifier and the data traffic of the user plane function network element of the core network is greater than the traffic threshold.
Fig. 4 is a flowchart of another session establishment method according to an exemplary embodiment of the present invention, where the method is applied to a 5G network, the 5G network includes a user equipment and a core network, and the embodiment of the present invention introduces a session establishment procedure through interaction between the user equipment and the core network. Referring to fig. 4, the session establishment method includes the steps of:
step 401, the ue sends a PDU session establishment request to the core network.
The PDU session establishment request includes a first DNN, which carries a network generic identifier.
Step 402, the core network determines whether the first DNN carries a network generic identity.
If it is determined that the first DNN carries the network common identifier, perform step 403; otherwise, step 408 is performed.
Step 403, the core network determines whether the data traffic of the user plane functional network element is greater than a traffic threshold.
If the data traffic of the user plane functional network element is determined to be greater than the traffic threshold, executing step 404; otherwise, step 408 is performed.
In one embodiment, the UPF determines whether the data traffic is greater than the traffic threshold, and in the case that the data traffic is greater than the traffic threshold, the UPF sends a message to the SMF to instruct the SMF to release the session connection, where the message may include a release reason, such as overload and/or traffic to local network.
Step 404, the core network generates a session release instruction.
Step 405, the core network sends a session release instruction to the user equipment.
In one embodiment, the session release order is sent by the SMF to the UE: and the NAS PDU Session release command indicates the UE to initiate PDU Session reestablishment, and the reason value is overload and/or overflow to local network.
Step 406, the ue sends a PDU session reestablishment request to the core network.
Step 407, the core network establishes a local PDU session according to the network address information of the local network carried by the second DNN in the PDU session reestablishment request.
Step 408, the core network establishes a core network session connection between the user equipment and the data network.
The establishment process of the core network session connection is that the user equipment initiates a PDU session establishment request, the AMF initiates a discovery and selection process of the SMF to the NRF according to the slice NSSAI and DNN configured by the terminal, the selected SMF establishes the context of the session, the SMF takes the subscription information responded by the user to the UDM, then sends a policy control message to the UPF, the RAN and the UE, and the UPF establishes the connection of the PDU session with the RAN and the UE.
In the embodiment of the invention, when the overload of the user plane function network element is determined or the overload is about to occur, the session is shunted to the local so as to reduce the pressure of the user plane function network element and avoid the congestion of user equipment.
Corresponding to the embodiment of the session establishment method, the invention also provides an embodiment of a session establishment device.
Fig. 5 is a schematic block diagram of a session establishing apparatus according to an exemplary embodiment of the present invention, where the apparatus is applied to a core network, where the core network includes a user plane function network element; the session establishing device comprises:
a determining module 51, configured to determine, in response to a PDU session establishment request sent by a user equipment, whether a first DNN included in the PDU session establishment request carries a network universal identifier and whether a data traffic of a user plane function network element is greater than a traffic threshold;
an indicating module 52, configured to instruct the user equipment to establish a session connection with the data network through the local network, when it is determined that the first DNN carries the network common identifier and the data traffic of the user plane function network element is greater than a traffic threshold.
Optionally, when determining whether the first DNN carries a network generic identity, the determining module is configured to:
and determining whether the first DNN carries a network universal identifier or not according to the network address information of the first DNN.
Optionally, the indication module includes:
a sending unit, configured to send a session release instruction to user equipment, where the session release instruction is used to instruct the user equipment to send a second DNN;
and the establishing unit is used for responding to a second DNN sent by the user equipment and establishing the session connection between the user equipment and the data network according to the network address information of the local network carried by the second DNN.
Optionally, the method further comprises: a release module;
the determining module is further configured to determine whether an offloadable session connection exists or not when it is determined that the data traffic of the user plane function network element is greater than a traffic threshold; and in the case that it is determined that there is a session connection that can be offloaded, invoking the release module;
the release module is used for sending a session release instruction to the user equipment corresponding to the session connection capable of being unloaded so as to instruct the user equipment corresponding to the session connection capable of being unloaded to establish the session connection with the data network through the local network.
Fig. 6 is a schematic block diagram of another session establishment apparatus according to an exemplary embodiment of the present invention, where the apparatus is applied to a user equipment, and the session establishment apparatus includes:
a first sending module 61, configured to send a PDU session establishment request to a core network, where the PDU session establishment request includes a first DNN, and the first DNN carries a network universal identifier;
a second sending module 62, configured to send a PDU session reestablishment request to the core network when a request of receiving a session release instruction returned by the core network is received, where the PDU session reestablishment request includes a second DNN, the second DNN carries network address information of a local network, and the session release instruction is generated by the core network when it is determined that the first DNN carries a network universal identifier and a data traffic of a user plane function network element of the core network is greater than a traffic threshold.
The embodiment of the invention also provides a session establishment system which is applied to a 5G network, wherein the 5G network comprises user equipment and a core network, and the core network comprises a user plane function network element;
the user equipment is used for sending a PDU session establishment request to the core network, wherein the PDU session establishment request comprises a first DNN, and the first DNN carries a network universal identifier;
the core network determines whether a first DNN contained in the PDU session establishment request carries a network universal identifier and whether the data traffic of the user plane function network element is greater than a traffic threshold;
and the core network instructs the user equipment to establish session connection with the data network through the local network under the condition that the first DNN carries the network universal identification and the data traffic of the user plane function network element is greater than the traffic threshold.
For the device embodiment, since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the present invention. One of ordinary skill in the art can understand and implement without inventive effort.
Fig. 7 is a schematic diagram of an electronic device according to an exemplary embodiment of the present invention, and illustrates a block diagram of an exemplary electronic device 70 suitable for implementing an embodiment of the present invention. The electronic device 70 shown in fig. 7 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiment of the present invention.
As shown in FIG. 7, the electronic device 70 may take the form of a general purpose computing device, which may be a server device, for example. The components of electronic device 70 may include, but are not limited to: the at least one processor 71, the at least one memory 72, and a bus 73 connecting the various system components (including the memory 72 and the processor 71).
The bus 73 includes a data bus, an address bus, and a control bus.
The memory 72 may include volatile memory, such as Random Access Memory (RAM) 721 and/or cache memory 722, and may further include Read Only Memory (ROM) 723.
Memory 72 may also include program means 725 (or utility means) having a set (at least one) of program modules 724, such program modules 724 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
The processor 71 executes various functional applications and data processing, such as the methods provided by any of the above embodiments, by running a computer program stored in the memory 72.
The electronic device 70 may also communicate with one or more external devices 74 (e.g., keyboard, pointing device, etc.). Such communication may be through an input/output (I/O) interface 75. Also, the model-generating electronic device 70 may also communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet) via the network adapter 76. As shown, the network adapter 76 communicates with the other modules of the model-generating electronic device 70 via a bus 73. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the model-generating electronic device 70, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method provided in any of the above embodiments.
More specific examples, among others, that the readable storage medium may employ may include, but are not limited to: a portable disk, hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.
In a possible implementation manner, the embodiment of the present invention may also be implemented in the form of a program product, which includes program code for causing a terminal device to execute a method implementing any of the embodiments described above when the program product runs on the terminal device.
Where program code for carrying out the invention is written in any combination of one or more programming languages, the program code may be executed entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device, partly on a remote device or entirely on the remote device.
It should be noted that although in the above detailed description several units/modules or sub-units/modules of the electronic device are mentioned, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the units/modules described above may be embodied in one unit/module according to embodiments of the invention. Conversely, the features and functions of one unit/module described above may be further divided into embodiments by a plurality of units/modules.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (14)

1. A session establishment method is applied to a core network, wherein the core network comprises a user plane function network element; the session establishment method comprises the following steps:
responding to a PDU session establishment request sent by user equipment, and determining whether a first DNN contained in the PDU session establishment request carries a network universal identifier and whether the data traffic of the user plane function network element is greater than a traffic threshold value;
and under the condition that the first DNN carries the network universal identification and the data flow of the user plane function network element is larger than the flow threshold value, indicating the user equipment to establish session connection with the data network through the local network.
2. The session establishment method of claim 1, wherein determining whether the first DNN carries a network generic identity comprises:
and determining whether the first DNN carries a network universal identifier or not according to the network address information of the first DNN.
3. The session establishment method of claim 1, wherein instructing the user equipment to establish the session connection with the data network through the local network comprises:
sending a session release instruction to the user equipment, wherein the session release instruction is used for instructing the user equipment to send a second DNN;
and responding to a second DNN sent by the user equipment, and establishing session connection between the user equipment and the data network according to the network address information of the local network carried by the second DNN.
4. The session establishment method according to claim 1, further comprising:
determining whether session connection capable of being unloaded exists or not under the condition that the data flow of the user plane function network element is larger than a flow threshold value;
in the case that it is determined that an offloadable session connection exists, sending a session release instruction to a user equipment corresponding to the offloadable session connection to instruct the user equipment corresponding to the offloadable session connection to establish a session connection with a data network through a local network.
5. A session establishment method is applied to user equipment, and is characterized in that the session establishment method comprises the following steps:
sending a PDU session establishment request to a core network, wherein the PDU session establishment request comprises a first DNN, and the first DNN carries a network universal identifier;
sending a PDU session reestablishment request to the core network under the condition that a session release instruction returned by the core network is received, wherein the PDU session reestablishment request comprises a second DNN, the second DNN carries network address information of a local network, and the session release instruction is generated by the core network under the condition that the first DNN carries a network universal identifier and the data traffic of a user plane function network element of the core network is larger than a traffic threshold value.
6. A session establishment method is applied to a 5G network, wherein the 5G network comprises user equipment and a core network, and the core network comprises a user plane function network element; the session establishment method comprises the following steps:
the user equipment sends a PDU session establishment request to the core network, wherein the PDU session establishment request comprises a first DNN, and the first DNN carries a network universal identifier;
the core network determines whether a first DNN contained in the PDU session establishment request carries a network universal identifier or not and whether the data traffic of the user plane function network element is greater than a traffic threshold or not;
and the core network instructs the user equipment to establish session connection with the data network through the local network under the condition that the first DNN is determined to carry the network universal identification and the data traffic of the user plane function network element is greater than the traffic threshold.
7. A session establishment apparatus is applied to a core network, wherein the core network comprises a user plane function network element; the session establishing device comprises:
a determining module, configured to determine, in response to a PDU session establishment request sent by user equipment, whether a first DNN included in the PDU session establishment request carries a network common identifier and whether a data traffic of the user plane functional network element is greater than a traffic threshold;
and the indicating module is used for indicating the user equipment to establish session connection with the data network through the local network under the condition that the first DNN carries the network universal identification and the data traffic of the user plane function network element is greater than a traffic threshold value.
8. The session establishing apparatus of claim 7, wherein in determining whether the first DNN carries a network generic identity, the determining module is configured to:
and determining whether the first DNN carries a network universal identifier or not according to the network address information of the first DNN.
9. The session establishing apparatus according to claim 7, wherein the indicating module comprises:
a sending unit, configured to send a session release instruction to a user equipment, where the session release instruction is used to instruct the user equipment to send a second DNN;
and the establishing unit is used for responding to a second DNN sent by the user equipment and establishing the session connection between the user equipment and the data network according to the network address information of the local network carried by the second DNN.
10. The session establishing apparatus according to claim 7, further comprising: a releasing module;
the determining module is further configured to determine whether an offloadable session connection exists or not when it is determined that the data traffic of the user plane function network element is greater than a traffic threshold; and in the case that it is determined that there is a session connection that can be offloaded, invoking the release module;
the release module is used for sending a session release instruction to the user equipment corresponding to the session connection capable of being unloaded so as to instruct the user equipment corresponding to the session connection capable of being unloaded to establish the session connection with the data network through the local network.
11. A session establishing apparatus, applied to a user equipment, the session establishing apparatus comprising:
a first sending module, configured to send a PDU session establishment request to a core network, where the PDU session establishment request includes a first DNN, and the first DNN carries a network universal identifier;
a second sending module, configured to send a PDU session reestablishment request to the core network when a request for a session release instruction returned by the core network is received, where the PDU session reestablishment request includes a second DNN, the second DNN carries network address information of a local network, and the session release instruction is generated by the core network when it is determined that the first DNN carries a network universal identifier and a data traffic of a user plane function network element of the core network is greater than a traffic threshold.
12. A session establishment system is characterized in that the session establishment system is applied to a 5G network, wherein the 5G network comprises user equipment and a core network, and the core network comprises a user plane function network element;
the user equipment is used for sending a PDU session establishment request to the core network, wherein the PDU session establishment request comprises a first DNN, and the first DNN carries a network universal identifier;
the core network determines whether a first DNN contained in the PDU session establishment request carries a network universal identifier and whether the data traffic of the user plane function network element is greater than a traffic threshold;
and the core network instructs the user equipment to establish session connection with the data network through the local network under the condition that the first DNN is determined to carry the network universal identification and the data traffic of the user plane function network element is greater than the traffic threshold.
13. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 5 when executing the computer program.
14. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method of any one of claims 1 to 5.
CN202110777667.2A 2021-07-09 2021-07-09 Session establishing method, device, system, electronic equipment and storage medium Pending CN115604753A (en)

Priority Applications (1)

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CN202110777667.2A CN115604753A (en) 2021-07-09 2021-07-09 Session establishing method, device, system, electronic equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110777667.2A CN115604753A (en) 2021-07-09 2021-07-09 Session establishing method, device, system, electronic equipment and storage medium

Publications (1)

Publication Number Publication Date
CN115604753A true CN115604753A (en) 2023-01-13

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Country Link
CN (1) CN115604753A (en)

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