CN113840391A - N4 session establishing method and device, electronic equipment and storage medium - Google Patents
N4 session establishing method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for establishing an N4 session, electronic equipment and a storage medium, wherein the method comprises the following steps: sending N4 conversation establishment request information to a user plane function UPF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity; and receiving the N4 session establishment response information sent by the UPF entity. According to the N4 session establishment method, the device, the electronic equipment and the storage medium, the office direction identification information is added into the N4 session establishment request information, the office direction to be processed is identified according to the office direction identification information, and the technical problem that a UPF entity cannot identify the office direction is solved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for establishing an N4 session, an electronic device, and a storage medium.
Background
The Packet Forwarding Control Protocol (PFCP) is mainly a Protocol for performing Forwarding Control on network packets.
In this protocol, a Packet Detection Rule (PDR) is specified, and Packet Detection Information (PDI) is included in the PDR. In the PDR, a tunnel address and a tunnel number need to be allocated, in the process of creating a Protocol Data Unit (PDU) Session, an N4 Session needs to be established, and in the process of establishing an N4 Session, a Session Management Function (SMF) entity may allocate a tunnel address and a tunnel number of an N3 interface, an N9 interface, or an N6 interface, respectively.
In the existing PFCP, a User Plane Function (UPF) entity cannot distinguish the directions of an acquired tunnel address and a tunnel number, which is a problem that needs to be solved in the field.
Disclosure of Invention
Embodiments of the present invention provide an N4 session establishment method, an apparatus, an electronic device, and a storage medium, which are used to solve the above technical problems in the prior art.
In a first aspect, an embodiment of the present invention provides an N4 session establishment method, including:
sending N4 conversation establishment request information to a user plane function UPF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity;
and receiving the N4 session establishment response information sent by the UPF entity.
Further, the office direction identification information is included in packet detection information PDI, and the N4 session establishment request information carries the PDI.
Further, the office direction identification information is a networklnstance field in the PDI.
Further, when the value of the networklnstance field is a first preset value, the local direction to the radio access network RAN is indicated.
Further, when the value of the networklnstance field is a second preset value, the local direction to another core UPF entity is indicated.
Further, when the value of the networklnstance field is a third preset value, the local direction to the ND functional entity of the data network is indicated.
In a second aspect, an embodiment of the present invention provides an N4 session establishment method, including:
receiving N4 session establishment request information sent by the SMF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity;
sending an N4 session establishment response message to the SMF entity.
Further, the office direction identification information is included in packet detection information PDI, and the N4 session establishment request information carries the PDI.
Further, the office direction identification information is a networklnstance field in the PDI.
Further, when the value of the networklnstance field is a first preset value, the local direction to the radio access network RAN is indicated.
Further, when the value of the networklnstance field is a second preset value, the local direction to another core UPF entity is indicated.
Further, when the value of the networklnstance field is a third preset value, the local direction to the ND functional entity of the data network is indicated.
In a third aspect, an embodiment of the present invention provides an N4 session establishing apparatus, including:
a first sending module, configured to send N4 session establishment request information to a user plane function UPF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity;
a first receiving module, configured to receive the N4 session establishment response information sent by the UPF entity.
In a fourth aspect, an embodiment of the present invention provides an N4 session establishment apparatus, including:
a second receiving module, configured to receive N4 session establishment request information sent by the SMF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity;
a second sending module, configured to send N4 session establishment response information to the SMF entity.
In a fifth aspect, an embodiment of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the N4 session establishment method provided in the first aspect.
In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the N4 session establishment method provided in the first aspect are implemented.
According to the N4 session establishment method, the device, the electronic equipment and the storage medium, the office direction identification information is added into the N4 session establishment request information, the office direction to be processed is identified according to the office direction identification information, and the technical problem that a UPF entity cannot identify the office direction is solved.
Drawings
FIG. 1 is a diagram of a non-roaming 5G system architecture in reference point representation in the prior art;
fig. 2 is a schematic diagram of an N4 session establishment method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of signaling interaction in the process of establishing an N4 session according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an N4 session establishment method according to another embodiment of the present invention;
fig. 5 is a schematic diagram of a single-node scenario of a UPF entity according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a two-node scenario of a UPF entity according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a three-node scenario of a UPF entity according to an embodiment of the present invention;
fig. 8 is a schematic diagram of an N4 session establishment apparatus according to an embodiment of the present invention;
fig. 9 is a schematic diagram of an N4 session establishment apparatus according to another embodiment of the present invention;
fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of a non-roaming 5G system architecture in reference point representation in the prior art, as shown in fig. 1, a tunnel address and a tunnel number need to be allocated in a PDR, one or more N4 sessions need to be established during PDU session creation, and during N4 session establishment, an SMF entity may allocate a tunnel address and a tunnel number of an N3 interface, an N9 interface, or an N6 interface, respectively.
Wherein N3 denotes a reference point between a radio access network (R) AN and a UPF entity, and N3 denotes AN interface between the (R) AN and the UPF entity; n4 represents a reference point between the SMF entity and the UPF entity, and the N4 interface represents an interface between the SMF entity and the UPF entity; n6 represents a reference point between the UPF entity and a Data Network (ND) functional entity, and N6 interface represents an interface between the UPF entity and the DN functional entity; n9 represents a reference point between two core UPF entities, and the N9 interface represents an interface between two core UPF entities.
In a current core network, after receiving a PDU session establishment request message sent by a terminal (User Equipment, UE), an SMF entity needs to combine information respectively obtained from an Access and Mobility Management Function (AMF) entity, a Unified Data Management (UDM) entity, a Policy Control Function (PCF) entity, and the UE in the process of creating a PDU session, and combine a local UPF entity configuration or a UPF entity configuration provided by an NF storage Function (NRF) entity, to select a UPF entity required to satisfy the PDU session requirement.
After selecting the UPF entities, the SMF entity needs to create N4 sessions (N4 sessions are also called PFCP sessions) with each selected UPF entity, an N4 session establishment request message sent by the SMF entity to the UPF entity carries PDRs, Forwarding Action rules (farrs), quality of service Enforcement rules (QERs), and the like, and the PDRs need to carry corresponding PDIs including fields such as Flow Description (Flow Description), IP addresses of UEs (UE IP addresses), Source interfaces (Source interfaces), and the like. When creating an N4 session, a tunnel address and a tunnel number need to be allocated, and the tunnel address and the tunnel number are notified to the base station side, so that the uplink service can be opened. For the downlink service, the base station side allocates the corresponding downlink tunnel address and tunnel number according to the tunnel address and tunnel number of the core network side, and the SMF entity informs the UPF entity of the tunnel address and tunnel number through the PFCP, so that the downlink service can be opened. The PDI exists under the PDR in the protocol, and the local Full-quantity tunnel endpoint identification (F-TEID) is contained in the PDI, and the SMF entity can indicate the UPF entity to allocate different tunnel addresses and tunnel numbers through different assignments in the local F-TEID.
In the existing PFCP, the UPF entity cannot distinguish the office direction of the acquired tunnel address and tunnel number. The office direction indicates the direction in which the signaling is directed.
In order to solve the above technical problem, fig. 2 is a schematic diagram of an N4 session establishment method according to an embodiment of the present invention, and as shown in fig. 2, an embodiment of the present invention provides an N4 session establishment method, including:
Specifically, fig. 3 is a schematic diagram of signaling interaction in the N4 session establishment process according to an embodiment of the present invention, and as shown in fig. 3, when an SMF entity triggers the establishment of a PDU session or the relocation of a UPF entity, N4 session establishment request information is first sent to the UPF entity.
The session establishment request message of N4 sent by the SMF entity to the UPF entity carries PDR, FAR, QER and the like, and the PDR needs to carry corresponding PDI, wherein the PDI comprises fields of Flow Description, UE IP Address, Source Interface and the like.
In this embodiment of the present invention, the N4 session establishment request information includes office direction identification information, where the office direction identification information is used to identify an office direction indicated by the SMF entity.
The office direction identification information may be included in the PDR, or included in the FAR, or included in the QER.
The UPF entity receives the N4 session establishment request information sent by the SMF entity.
And step 202, receiving the N4 session establishment response information sent by the UPF entity.
Specifically, after receiving the N4 session establishment request message sent by the SMF entity, the UPF entity sends an N4 session establishment response message to the SMF entity.
And the SMF entity receives the N4 session establishment response information sent by the UPF entity.
After receiving the N4 session establishment response message, the SMF entity performs interaction with other network functions.
According to the N4 session establishment method provided by the embodiment of the invention, the office direction identification information is added in the N4 session establishment request information, and the office direction to be processed is identified according to the office direction identification information, so that the technical problem that the UPF entity cannot identify the office direction is solved.
Based on any of the above embodiments, the office direction identification information is included in packet detection information PDI, and the N4 session establishment request information carries the PDI.
Specifically, the session establishment request message N4 sent by the SMF entity to the UPF entity carries PDR, FAR, QER, etc., and the PDR needs to carry corresponding PDI.
In the embodiment of the present invention, the office-direction identification information is included in the PDI.
The method for establishing the N4 session provided by the embodiment of the invention includes the office direction identification information in the PDI and sends the office direction identification information to the UPF entity, and the change of the existing protocol is small, thereby reducing the complexity of the system.
Based on any of the above embodiments, the office direction identification information is a networklnstance field in the PDI.
Specifically, in the embodiment of the present invention, a networklnstance field in the PDI is used as the office direction identification information.
According to the N4 session establishment method provided by the embodiment of the invention, the idle NetWorkInstance field in the PDI is used as the office direction identification information, and the change of the existing protocol is small, so that the complexity of the system is reduced.
Based on any of the above embodiments, when the value of the networklnstance field is the first preset value, the local direction to the radio access network RAN is indicated.
Specifically, in the embodiment of the present invention, different office directions are characterized by assigning different values to the NetWorkInstance field in the PDI.
And when the value of the NetWorkInstance field is a first preset value, indicating the local direction to the radio access network RAN.
For example, the first preset value may be set to "3".
According to the N4 session establishment method provided by the embodiment of the invention, different values are assigned to the NetWorkInstance field in the PDI to represent different office directions, and the change of the existing protocol is small, so that the complexity of the system is reduced.
Based on any of the above embodiments, when the value of the networkk instance field is the second preset value, the office direction to another core UPF entity is indicated.
Specifically, in the embodiment of the present invention, different office directions are characterized by assigning different values to the NetWorkInstance field in the PDI.
And when the value of the NetWorkInstance field is a second preset value, indicating the office direction to another core UPF entity.
For example, the second preset value may be set to "9".
According to the N4 session establishment method provided by the embodiment of the invention, different values are assigned to the NetWorkInstance field in the PDI to represent different office directions, and the change of the existing protocol is small, so that the complexity of the system is reduced.
Based on any of the above embodiments, when the value of the networklnstance field is a third preset value, the local direction to the ND functional entity of the data network is indicated.
Specifically, in the embodiment of the present invention, different office directions are characterized by assigning different values to the NetWorkInstance field in the PDI.
And when the value of the NetWorkInstance field is a third preset value, indicating the office direction to the ND functional entity.
For example, the third preset value may be set to "6".
According to the N4 session establishment method provided by the embodiment of the invention, different values are assigned to the NetWorkInstance field in the PDI to represent different office directions, and the change of the existing protocol is small, so that the complexity of the system is reduced.
Based on any of the above embodiments, fig. 4 is a schematic diagram of an N4 session establishment method according to another embodiment of the present invention, and as shown in fig. 4, an embodiment of the present invention provides an N4 session establishment method, including:
Specifically, fig. 3 is a schematic diagram of signaling interaction in the N4 session establishment process according to an embodiment of the present invention, and as shown in fig. 3, when an SMF entity triggers the establishment of a PDU session or the relocation of a UPF entity, N4 session establishment request information is first sent to the UPF entity.
The session establishment request message of N4 sent by the SMF entity to the UPF entity carries PDR, FAR, QER and the like, and the PDR needs to carry corresponding PDI, wherein the PDI comprises fields of Flow Description, UE IP Address, Source Interface and the like.
In this embodiment of the present invention, the N4 session establishment request information includes office direction identification information, where the office direction identification information is used to identify an office direction indicated by the SMF entity.
The office direction identification information may be included in the PDR, or included in the FAR, or included in the QER.
The UPF entity receives the N4 session establishment request information sent by the SMF entity.
And step 402, sending N4 session establishment response information to the SMF entity.
Specifically, after receiving the N4 session establishment request message sent by the SMF entity, the UPF entity sends an N4 session establishment response message to the SMF entity.
And the SMF entity receives the N4 session establishment response information sent by the UPF entity.
After receiving the N4 session establishment response message, the SMF entity performs interaction with other network functions.
According to the N4 session establishment method provided by the embodiment of the invention, the office direction identification information is added in the N4 session establishment request information, and the office direction to be processed is identified according to the office direction identification information, so that the technical problem that the UPF entity cannot identify the office direction is solved.
Based on any of the above embodiments, the office direction identification information is included in packet detection information PDI, and the N4 session establishment request information carries the PDI.
Specifically, the session establishment request message N4 sent by the SMF entity to the UPF entity carries PDR, FAR, QER, etc., and the PDR needs to carry corresponding PDI.
In the embodiment of the present invention, the office-direction identification information is included in the PDI.
The method for establishing the N4 session provided by the embodiment of the invention includes the office direction identification information in the PDI and sends the office direction identification information to the UPF entity, and the change of the existing protocol is small, thereby reducing the complexity of the system.
Based on any of the above embodiments, the office direction identification information is a networklnstance field in the PDI.
Specifically, in the embodiment of the present invention, a networklnstance field in the PDI is used as the office direction identification information.
According to the N4 session establishment method provided by the embodiment of the invention, the idle NetWorkInstance field in the PDI is used as the office direction identification information, and the change of the existing protocol is small, so that the complexity of the system is reduced.
Based on any of the above embodiments, when the value of the networklnstance field is the first preset value, the local direction to the radio access network RAN is indicated.
Specifically, in the embodiment of the present invention, different office directions are characterized by assigning different values to the NetWorkInstance field in the PDI.
And when the value of the NetWorkInstance field is a first preset value, indicating the local direction to the radio access network RAN.
For example, the first preset value may be set to "3".
According to the N4 session establishment method provided by the embodiment of the invention, different values are assigned to the NetWorkInstance field in the PDI to represent different office directions, and the change of the existing protocol is small, so that the complexity of the system is reduced.
Based on any of the above embodiments, when the value of the networkk instance field is the second preset value, the office direction to another core UPF entity is indicated.
Specifically, in the embodiment of the present invention, different office directions are characterized by assigning different values to the NetWorkInstance field in the PDI.
And when the value of the NetWorkInstance field is a second preset value, indicating the office direction to another core UPF entity.
For example, the second preset value may be set to "9".
According to the N4 session establishment method provided by the embodiment of the invention, different values are assigned to the NetWorkInstance field in the PDI to represent different office directions, and the change of the existing protocol is small, so that the complexity of the system is reduced.
Based on any of the above embodiments, when the value of the networklnstance field is a third preset value, the local direction to the ND functional entity of the data network is indicated.
Specifically, in the embodiment of the present invention, different office directions are characterized by assigning different values to the NetWorkInstance field in the PDI.
And when the value of the NetWorkInstance field is a third preset value, indicating the office direction to the ND functional entity.
For example, the third preset value may be set to "6".
According to the N4 session establishment method provided by the embodiment of the invention, different values are assigned to the NetWorkInstance field in the PDI to represent different office directions, and the change of the existing protocol is small, so that the complexity of the system is reduced.
According to the existing PFCP, in the process of creating a Pdu session in a core network, there is a process of selecting a UPF entity by an SMF entity, and the selected UPF entity may be a single-node UPF entity, a two-node UPF entity, a three-node UPF entity, an Intermediate UPF entity (I-UPF), and the like.
(1) Single node UPF entity: the PDR is required to be allocated with the tunnel address and the tunnel number of an N3 interface;
(2) two-node UPF entity: an Uplink PDR created in a Remote Anchor (Remote Anchor) node needs to be allocated with a tunnel address and a tunnel number of an N9 interface, and an Uplink PDR created in an Uplink Classifier Anchor (ULCL Anchor) node needs to be allocated with a tunnel address and a tunnel number of an N3 interface;
(3) three-node UPF entity: the tunnel address and the tunnel number of the N9 interface need to be allocated to the upstream PDR created on the Remote Anchor node and the near-end Anchor (Local Anchor) node, respectively, and the tunnel address and the tunnel number of the N3 interface need to be allocated to the upstream PDR created in the ULCL Anchor node.
According to the current protocol, in the process of creating an N4 session with a UPF entity, the N3 interface, the N9 interface, the N6 interface, and the like cannot be distinguished when the SMF entity indicates that the UPF entity assigns a tunnel address and a tunnel number.
The result of selecting a UPF entity for an SMF entity is a single-node scenario:
fig. 5 is a schematic diagram of a single node scenario of a UPF entity according to an embodiment of the present invention, as shown in fig. 5, in a scenario where a result of a UPF entity selected by an SMF entity to be processed is a PDU Session Anchor (PSA) node, an N4 Session established at a PSA requires at least one pair of PDRs and one pair of FAR, where an upstream PDR requires to allocate a tunnel address and a tunnel number of an N3 interface, the SMF entity indicates a path, which is an N3 interface, by assigning a networkinstant field in the PDI to be "3", and if the UPF entity requires to allocate a tunnel address and a tunnel number to the path, a tunnel address and a tunnel number of an N3 interface need to be allocated, so as to solve a problem that the upstream interface cannot be identified in the PSA scenario.
The result of selecting a UPF entity for an SMF entity is a two-node scenario:
fig. 6 is a schematic diagram of a scenario of two nodes of a UPF entity according to an embodiment of the present invention, as shown in fig. 6, in the scenario, an SMF entity needs to select two UPF entity nodes, that is, a Remote Anchor node and an ULCL Anchor node, and then the SMF entity creates an N4 session with the two UPF entities respectively. When creating an N4 session with a Remote Anchor, the upstream PDR needs to allocate a tunnel address and tunnel number of an N9 interface. When an N4 session is created with a ULCL Anchor, the uplink PDRs need to be allocated with a tunnel address and a tunnel number of an N3 interface, and all the uplink PDRs need to be allocated with the same tunnel address and tunnel number. When the SMF entity indicates that the UPF entity assigns a tunnel address and a tunnel number, if the UPF entity does not indicate the interface type of the tunnel address and the tunnel number, it may cause the UPF entity to not know what kind of interface type of the tunnel address and the tunnel number to assign or assign an incorrect tunnel address and tunnel number. In the scenario, the network field in the PDR sent to the Remote Anchor node is assigned to "9" to indicate that the UPF entity allocates a tunnel address and a tunnel number of an N9 interface, and the network field in the PDR sent to the ULCL Anchor node is assigned to "3" to indicate that the UPF entity allocates a tunnel address and a tunnel number of an N3 interface.
The result of selecting a UPF entity for an SMF entity is a three-node scenario:
fig. 7 is a schematic diagram of a three-node scenario of a UPF entity according to an embodiment of the present invention, and as shown in fig. 7, when a SMF entity selects a three-node UPF entity, three UPF entity nodes, that is, a Remote Anchor node, a Local Anchor node, and a ULCL Anchor node, are selected. N4 sessions need to be created on the three UPF entity nodes respectively, and a tunnel address and a tunnel number of an N9 interface need to be allocated to an uplink PDR in an N4 session created on a Remote Anchor node; allocating a tunnel address and a tunnel number of an N9 interface for an uplink PDR in an N4 session created on a Local Anchor node; the upstream PDR in the N4 session created on the ULCL Anchor node needs to be assigned the tunnel address and tunnel number of one N3 interface. Assigning network status fields in PDRs sent to the Remote Anchor node and the Local Anchor node to be 9 so as to respectively indicate the Remote Anchor node and the Local Anchor node to allocate a tunnel address and a tunnel number of an N9 interface; the network status field in the PDR sent to the ULCL Anchor node is assigned a value of "3" to indicate that the ULCL Anchor node allocates a tunnel address and tunnel number of an N3 interface.
By adopting the method in the embodiment of the invention, when the SMF entities and the UPF entities of different manufacturers are used in a matched manner, the UPF entity can acquire the office direction information indicated by the SMF entity directly through the N4 session. The UPF entities of different manufacturers can identify different office directions according to the office direction identification information, and further can make the same action as that indicated by the SMF entity. In addition, the problem that when UPF entities of a plurality of nodes exist in the same Pdu session, the UPF entities cannot identify the office directions of N3, N9 and N6 is solved.
Based on any of the above embodiments, fig. 8 is a schematic diagram of an N4 session establishing apparatus provided in an embodiment of the present invention, and as shown in fig. 8, an embodiment of the present invention provides an N4 session establishing apparatus, including a first sending module 801 and a first receiving module 802, where:
the first sending module 801 is configured to send N4 session establishment request information to a user plane function UPF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity; the first receiving module 802 is configured to receive the N4 session establishment response information sent by the UPF entity.
An embodiment of the present invention provides an N4 session establishment apparatus, configured to execute the method described in any of the above embodiments, where specific steps of executing the method described in any of the above embodiments by using the apparatus provided in this embodiment are the same as those in the corresponding embodiment described above, and are not described herein again.
The N4 session establishing device provided by the embodiment of the present invention identifies the office direction to be processed according to the office direction identification information by adding the office direction identification information to the N4 session establishing request information, thereby solving the technical problem that the UPF entity cannot identify the office direction.
Based on any of the above embodiments, the office direction identification information is included in packet detection information PDI, and the N4 session establishment request information carries the PDI.
Based on any of the above embodiments, the office direction identification information is a networklnstance field in the PDI.
Based on any of the above embodiments, when the value of the networklnstance field is the first preset value, the local direction to the radio access network RAN is indicated.
Based on any of the above embodiments, when the value of the networkk instance field is the second preset value, the office direction to another core UPF entity is indicated.
Based on any of the above embodiments, when the value of the networklnstance field is a third preset value, the local direction to the ND functional entity of the data network is indicated.
Based on any of the above embodiments, fig. 9 is a schematic diagram of an N4 session establishing apparatus according to another embodiment of the present invention, as shown in fig. 9, an embodiment of the present invention provides an N4 session establishing apparatus, including a second receiving module 901 and a second sending module 902, where:
the second receiving module 901 is configured to receive N4 session establishment request information sent by the SMF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity; the second sending module 902 is configured to send N4 session establishment response information to the SMF entity.
An embodiment of the present invention provides an N4 session establishment apparatus, configured to execute the method described in any of the above embodiments, where specific steps of executing the method described in any of the above embodiments by using the apparatus provided in this embodiment are the same as those in the corresponding embodiment described above, and are not described herein again.
The N4 session establishing device provided by the embodiment of the present invention identifies the office direction to be processed according to the office direction identification information by adding the office direction identification information to the N4 session establishing request information, thereby solving the technical problem that the UPF entity cannot identify the office direction.
Based on any of the above embodiments, the office direction identification information is included in packet detection information PDI, and the N4 session establishment request information carries the PDI.
Based on any of the above embodiments, the office direction identification information is a networklnstance field in the PDI.
Based on any of the above embodiments, when the value of the networklnstance field is the first preset value, the local direction to the radio access network RAN is indicated.
Based on any of the above embodiments, when the value of the networkk instance field is the second preset value, the office direction to another core UPF entity is indicated.
Based on any of the above embodiments, when the value of the networklnstance field is a third preset value, the local direction to the ND functional entity of the data network is indicated.
Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 10, the electronic device includes: a processor (processor)1001, a communication Interface (communication Interface)1002, a memory (memory)1003 and a communication bus 1004, wherein the processor 1001, the communication Interface 1002 and the memory 1003 complete communication with each other through the communication bus 1004. The processor 1001 may call a computer program stored on the memory 1003 and executable on the processor 1001 to perform the following steps:
sending N4 conversation establishment request information to a user plane function UPF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity; and receiving the N4 session establishment response information sent by the UPF entity.
Or the following steps:
receiving N4 session establishment request information sent by the SMF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity; sending an N4 session establishment response message to the SMF entity.
In addition, the logic instructions in the memory 1003 may be implemented in the form of software functional units and may be stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the above method embodiments, for example, the method includes:
sending N4 conversation establishment request information to a user plane function UPF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity; and receiving the N4 session establishment response information sent by the UPF entity.
Or the following steps:
receiving N4 session establishment request information sent by the SMF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity; sending an N4 session establishment response message to the SMF entity.
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 may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (16)
1. An N4 session establishment method, comprising:
sending N4 conversation establishment request information to a user plane function UPF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity;
and receiving the N4 session establishment response information sent by the UPF entity.
2. The N4 session establishment method of claim 1, wherein the office direction identification information is included in Packet Detection Information (PDI), and the N4 session establishment request information carries the PDI.
3. The N4 session establishment method according to claim 2, wherein the office direction identification information is a networkk instance field in PDI.
4. The N4 session establishment method of claim 3, wherein the value of the networkk instance field indicates a local direction to the radio access network RAN when the value is a first preset value.
5. The N4 session establishment method according to claim 3, wherein the NetWorkInstance field indicates a direction to another core UPF entity when the value is the second preset value.
6. The N4 session establishment method according to claim 3, wherein, when the value of the NetWorkInstance field is a third preset value, it indicates the local direction to the ND function entity of the data network.
7. An N4 session establishment method, comprising:
receiving N4 session establishment request information sent by the SMF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity;
sending an N4 session establishment response message to the SMF entity.
8. The N4 session establishment method of claim 7, wherein the office direction identification information is included in Packet Detection Information (PDI), and the N4 session establishment request information carries the PDI.
9. The N4 session establishment method according to claim 8, wherein the office direction identification information is a networkk instance field in PDI.
10. The N4 session establishment method of claim 9, wherein the value of the networkk instance field indicates a local direction to the radio access network RAN when the value is a first preset value.
11. The N4 session establishment method according to claim 9, wherein the value of the networkk instance field indicates a direction to another core UPF entity when the value is a second preset value.
12. The N4 session establishment method according to claim 9, wherein the value of the networklnstance field indicates a local direction to the ND functional entity of the data network when the value is a third preset value.
13. An N4 session establishment apparatus, comprising:
a first sending module, configured to send N4 session establishment request information to a user plane function UPF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity;
a first receiving module, configured to receive the N4 session establishment response information sent by the UPF entity.
14. An N4 session establishment apparatus, comprising:
a second receiving module, configured to receive N4 session establishment request information sent by the SMF entity; the N4 session establishment request information includes office direction identification information; the office direction identification information is used for identifying the office direction indicated by the SMF entity;
a second sending module, configured to send N4 session establishment response information to the SMF entity.
15. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the N4 session establishment method according to any one of claims 1 to 12.
16. A computer-readable storage medium, having stored thereon a computer program, the computer program, when being executed by a processor, carrying out the steps of the N4 session establishment method according to any one of claims 1 to 12.
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Application publication date: 20211224 |