CN114258154A - Session method, terminal and session function entity - Google Patents
Session method, terminal and session function entity Download PDFInfo
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- CN114258154A CN114258154A CN202111651243.8A CN202111651243A CN114258154A CN 114258154 A CN114258154 A CN 114258154A CN 202111651243 A CN202111651243 A CN 202111651243A CN 114258154 A CN114258154 A CN 114258154A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
Abstract
The application discloses a session method, a terminal and a session function entity, and belongs to the technical field of communication. The conversation method comprises the following steps: the method comprises the steps of obtaining service quality parameters of a first target network slice, determining a second target network slice matched with the first target network slice in the second network according to the service quality parameters of the first target network slice, and establishing session connection between a current terminal and a target application based on the first target network slice and the second target network slice. The method determines whether the service quality capabilities of the network slices of different networks are matched or not through the service quality parameters of the network slices, so that the service quality capabilities of the network slices in the first network and the network slices in the second network used by the terminal are matched when the terminal is in conversation with the target application, waste of network resources on the side with higher service quality capabilities is avoided, and the utilization rate of the resources is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a session method, a terminal, and a session function entity.
Background
In the fifth Generation Mobile Communication Technology (5G), a User Equipment (UE) may first access a near-end network and then access a far-end network through the near-end network during a session. When data flows flow through a near-end network and a far-end network, because there is no mapping relationship between network slices of the two networks, if the difference of the service quality capabilities of the network slices used by the UE in the two networks is large, resource waste is caused to the network slice with the high service quality capability.
Disclosure of Invention
Therefore, the application provides a session method, a terminal and a session function entity to solve the problem that when the difference between the service quality capabilities of network slices used by the UE in the two networks is large, the resource waste is caused to the network slice with the high service quality capability.
In order to achieve the above object, a first aspect of the present application provides a session method, including:
obtaining a service quality parameter of a first target network slice, wherein the first target network slice is a network slice which provides service for a target application in a first network;
determining a second target network slice matched with the first target network slice in a second network according to the service quality parameter of the first target network slice, wherein the second network is a network connecting the first network and the current terminal;
establishing a session connection between the current terminal and the target application based on the first target network slice and the second target network slice.
Further, the obtaining the quality of service parameter of the first target network slice includes:
sending a registration request to the first network, and determining a first allowed network slice, wherein the first allowed network slice is a network slice for the first network to open the use permission for the current terminal;
selecting the first target network slice matched with the target application from the first allowed network slices according to terminal strategy configuration information;
obtaining quality of service parameters for the first target network slice from the first network.
Further, the determining a second target network slice in a second network that matches the first target network slice according to the quality of service parameter of the first target network slice includes:
acquiring second network ordering information;
determining a second allowed network slice according to the second network subscription information, wherein the second allowed network slice is a network slice for the second network to open the use right for the current terminal;
obtaining a service quality parameter of the second allowed network slice;
calculating a difference value of the service quality of the first target network slice and the second allowed network slice according to the service quality parameter of the first target network slice and the service quality parameter of the second allowed network slice;
and selecting the second target network slice from the second allowed network slices according to the service quality difference value between the first target network slice and the second allowed network slices and a preset value range.
Further, after determining a second target network slice in a second network, which matches the first target network slice, according to the quality of service parameter of the first target network slice, the method further includes:
and updating the corresponding relation of the historical network slices according to the first target network slice and a second target network slice matched with the first target network slice.
Further, the determining a second target network slice in a second network that matches the first target network slice according to the quality of service parameter of the first target network slice includes:
and determining the second target network slice matched with the first target network slice according to the service quality parameter of the first target network slice and the corresponding relation of the historical network slices, wherein the historical network slice information is the corresponding relation obtained according to the first target network slice and the second target network slice matched with the first target network slice.
Further, after determining a second target network slice in a second network, which matches the first target network slice, according to the quality of service parameter of the first target network slice, the method further includes:
updating the subscription strategy of the current terminal to the second network under the condition that the second target network slice matched with the first target network slice does not exist in the second network according to the service quality parameter of the first target network slice;
ordering the network slice of the second network based on the updated ordering strategy to obtain a third allowed network slice;
and selecting the second target network slice from the third allowed network slices according to the service quality parameters of the first target network slice.
Further, the establishing a session connection between the current terminal and the target application based on the first target network slice and the second target network slice includes:
mapping a protocol data unit session carrying a target security association in the first network to a resource of the first target network slice, wherein the target security association is a security association for carrying a data stream of the target application and the current terminal in the first network;
mapping a protocol data unit session carrying the current terminal and the target application in the second network to the resource of the second target network slice;
and establishing the session connection between the current terminal and the target application based on the resources of the first target network slice and the resources of the second target network slice.
In order to achieve the above object, a second aspect of the present application provides a session method, including:
sending a service quality parameter of a first target network slice to a terminal, wherein the first target network slice is a network slice which provides service for a target application in a current network;
and establishing a session connection between the terminal and the target application based on the first target network slice and a second target network slice, wherein the second target network slice is a network slice which is determined according to the service quality parameter of the first target network slice and is matched with the first target network slice in a second network, and the second network is a network for connecting the current network and the terminal.
In order to achieve the above object, a third aspect of the present application provides a terminal comprising:
a parameter obtaining module configured to obtain a quality of service parameter of a first target network slice, wherein the first target network slice is a network slice in a first network that provides a service for a target application;
a slice determining module configured to determine a second target network slice in a second network, which matches the first target network slice, according to the quality of service parameter of the first target network slice, wherein the second network is a network connecting the first network and a current terminal;
a first session module configured to establish a session connection between the current terminal and the target application based on the first target network slice and the second target network slice.
In order to achieve the above object, a fourth aspect of the present application provides a session function entity, including:
the terminal comprises a sending module, a receiving module and a processing module, wherein the sending module is configured to send a service quality parameter of a first target network slice to the terminal, and the first target network slice is a network slice which provides service for a target application in a current network;
a second session module configured to establish a session connection between the terminal and the target application based on the first target network slice and a second target network slice, wherein the second target network slice is a network slice matching the first target network slice in a second network determined according to the quality of service parameter of the first target network slice, and the second network is a network connecting the current network and the terminal.
This application has following advantage:
according to the session method, the service quality parameter of a first target network slice is obtained, a second target network slice matched with the first target network slice in a second network is determined according to the service quality parameter of the first target network slice, and session connection between a current terminal and a target application is established based on the first target network slice and the second target network slice. The method determines whether the service quality capabilities of the network slices of different networks are matched or not through the service quality parameters of the network slices, so that the service quality capabilities of the network slices in the first network and the network slices in the second network used by the terminal are matched when the terminal is in conversation with the target application, waste of network resources on the side with higher service quality capabilities is avoided, and the utilization rate of the resources is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not to limit the application.
Fig. 1 is a schematic diagram of a network structure according to an embodiment of the present application;
fig. 2 is a flowchart of a session method according to an embodiment of the present application;
fig. 3 is a flowchart of a session method according to another embodiment of the present application;
FIG. 4 is a flow chart of a session method according to yet another embodiment of the present application;
fig. 5 is a flowchart of a session method according to another embodiment of the present application;
fig. 6 is a block diagram illustrating a terminal according to an embodiment of the present disclosure;
fig. 7 is a block diagram illustrating a session function entity according to an embodiment of the present disclosure;
fig. 8 is a schematic composition diagram of a session system according to an embodiment of the present application;
fig. 9 is a schematic signaling interaction diagram of a session system according to an embodiment of the present application.
Detailed Description
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration and explanation only, and are not intended to limit the present application.
In the 5G Network, when the UE registers with the Network, the Network Slice Selection Assistance Information (NSSAI) requested by the UE may be provided in the registration request, and the Network may determine whether the NSSAI requested by the UE is allowed to be used according to Information such as a service subscription condition of the UE and a current access area of the UE. The Network returns an allowed NSSAI to the UE according to the judgment result, wherein the allowed NSSAI comprises a plurality of pieces of auxiliary Information (S-NSSAI) allowing Single Network Slice Selection Assistance Information.
In an application scenario that the UE accesses the far-end network through the near-end network, the near-end network and the far-end network respectively allocate allowed NSSAI to the terminal, and there is no mapping relationship between network slices of the near-end network and the far-end network. When a data stream of a terminal flows through a near-end network and a far-end network, if a service quality capability of a network slice used by the terminal in the near-end network is greatly different from that of a network slice used by the terminal in the far-end network, resource waste is caused to the network slice with higher service quality capability. Moreover, the user also pays the associated fees for the wasted resources.
In view of this, the present application provides a session method, a terminal, and a session function entity, which determine whether quality of service capabilities of network slices of different networks are matched according to quality of service parameters of the network slices, so that when the terminal is in session with a target application, a network slice in a first network used in the session is matched with a quality of service capability of a network slice in a second network, thereby avoiding waste of network resources on the side with higher quality of service capabilities, and improving the utilization rate of resources.
Fig. 1 is a schematic diagram of a network structure according to an embodiment of the present application. As shown in fig. 1, a terminal 100 accesses a near-end network 110, and the near-end network 110 accesses a far-end network 130 through a data network 120.
Specifically, the terminal 100 connects to a Radio Access Network (RAN) 111 and an Access and Mobility Management Function (AMF) entity 112 to Access the near-end Network 110, the first Access and Mobility Management Function entity 112 is responsible for Management functions of registration, connection, reachability, Mobility, and the like of the terminal 100 in the near-end Network 110, and a Session of the terminal 100 in the near-end Network 110 is managed by a first Session Management Function (SMF) entity 113. Furthermore, a User Plane Function (UPF) entity 114 is connected to the radio access Network 111 and a Data Network (DN) 120, and the Data Network 120 is connected to a Non-3GPP InterWorking Function (N3 GPP IWF) entity 131 of the remote Network 130, so that the terminal 100 is connected to the remote Network 130 through the near-end Network 110. In the remote network 130, the non-3GPP interworking function entity 131 is connected to the second access and mobility management function entity 132, the second access and mobility management function entity 132 is connected to the second session management function entity 133, the second access and mobility management function entity 132 is responsible for management functions of registration, connection, reachability, mobility, and the like of the terminal 100 in the remote network 130, and the second session management function entity 133 manages a session of the terminal 100 in the remote network 130.
It should be noted that, when the terminal 100 establishes a session with another device or server through the near-end network 110 and the far-end network 130, a data stream between the terminal 100 and the other device or server may flow through the near-end network 110 and the far-end network 130, and the near-end network 110 and the far-end network 130 provide quality of service guarantee for the data stream. In some implementations, the near-end network 110 and the far-end network 130 respectively allocate network slices to the terminal 100, and the data stream is carried by the allocated network slices. In practical applications, there is no mapping relationship between the network slice of the near-end network 110 and the network slice of the far-end network 130, so if the difference between the qos capabilities of the network slice of the near-end network 110 and the network slice of the far-end network 130 is large, the resources of the network slice with high qos capability are wasted.
A first aspect of the present application provides a session method. Fig. 2 is a flowchart of a session method provided in an embodiment of the present application, where the session method is applicable to a terminal. As shown in fig. 2, the session method includes the following steps:
step S201, a quality of service parameter of the first target network slice is obtained.
Wherein the first target network slice is a network slice in the first network that provides services for the target application. The target application is an application program located on or connected to the first network. The Quality of Service (QoS) parameter is a parameter regarding the Quality of Service of a network slice. Quality of service parameters include, but are not limited to, bandwidth, jitter, packet loss rate. In practical application, the type of the quality of service parameter to be acquired by the terminal is determined according to user requirements or preset configuration.
In some embodiments, the terminal sends a registration request to the first network, and determines a first allowed network slice, wherein the first allowed network slice is a network slice for which the first network opens a use right for the current terminal; selecting a first target network slice matched with the target application from the first allowed network slices according to the terminal strategy configuration information; quality of service parameters for a first target network slice are obtained from a first network. The terminal Policy configuration information includes local configuration information of the terminal and/or a UE routing Policy (URSP), which may reflect a network slice usage Policy of the UE for each application. The URSP may be stored in a local storage space of the terminal, or may be stored in a Policy Control Function (PCF) entity of the first network. When the URSP is stored in the PCF, the UE needs to acquire the URSP by sending an inquiry request to the PCF, or the like.
For example, when the terminal registers with the first network through the N3IWF, the access and mobility management function in the first network returns the allowed NSSAI to the terminal, and the allowed NSSAI is the first allowed network slice. Wherein, the allowed NSSAI comprises n S-NSSAIs which are respectively S-NSSAI #1, S-NSSAI #2, … … and S-NSSAI # n, n is the number of S-NSSAIs, and n is an integer greater than or equal to 1. Further, assuming that the target application is a video service application and the video service application is preset in the terminal policy configuration information to use S-NSSAI #1, the first target network slice selected from the allowed NSSAIs and matched with the target application is S-NSSAI # 1. The terminal acquires the service quality parameter of S-NSSAI #1 from the first network.
Step S202, according to the service quality parameter of the first target network slice, determining a second target network slice matched with the first target network slice in the second network.
And the second target network slice is a network slice with the service quality capability matched with the first target network slice. The second network is a network connecting the first network and the current terminal.
In some embodiments, second network subscription information is obtained; determining a second allowed network slice according to second network subscription information, wherein the second allowed network slice is a network slice in which a second network opens a use right for the current terminal; acquiring a service quality parameter of a second allowable network slice; calculating the service quality difference value of the first target network slice and the second allowable network slice according to the service quality parameter of the first target network slice and the service quality parameter of the second allowable network slice; and selecting a second target network slice from the second allowable network slices according to the service quality difference value between the first target network slice and the second allowable network slices and a preset value range. Wherein the second network subscription information includes information of a network slice subscribed by the terminal in the second network. In some implementations, the second network subscription information may be obtained from a Unified Data Management function (UDM) of the second network.
The calculation of the service quality difference according to the service quality parameters mainly includes two cases, in the first case, the service quality parameters to be compared between the first target network slice and the second allowed network slice are only one type, and in the second case, the types of the service quality parameters to be compared between the first target network slice and the second allowed network slice are two or more than two.
For example, the qos parameter to be compared is only bandwidth, and assuming that the bandwidth of the first target network slice is D1 and the bandwidth of the second allowed network slice is D2, Δ D1 is D1-D2, and Δ D1 represents the bandwidth difference between the first target network slice and the second allowed network slice (in the present case, the qos difference is equal to the bandwidth difference).
For another example, the quality of service parameters to be compared include a bandwidth and a packet loss ratio, assuming that the bandwidth of the first target network slice is D3, the packet loss ratio is P1, the bandwidth of the second allowed network slice is D4, and the packet loss ratio is P2, then Δ D2 ═ D3-D4, Δ P1 ═ P1-P2, and Δ F ═ w1 ═ Δ D2+ w2 × - Δ P1, where Δ D2 represents a bandwidth difference between the first target network slice and the second allowed network slice, Δ P1 represents a packet loss ratio difference between the first target network slice and the second allowed network slice, Δ F represents a quality of service difference between the first target network slice and the second allowed network slice, w1 represents a weighting coefficient corresponding to the bandwidth, w2 represents a weighting coefficient corresponding to the packet loss ratio, and the sum of w1 and w2 is equal to 1.
It should be noted that the above method for calculating the qos difference is only an example, and the present application is not limited thereto.
It should be further noted that the preset value range may be set according to any one or more of experience, statistical data, and actual requirements, which is not limited in this application. For example, the preset value range includes zero, in which case, when the quality of service capabilities of the first target network slice and the second allowed network slice are the same, the second allowed network slice is determined to be the second target network slice. For another example, considering that a certain tunnel encapsulation overhead exists in an Internet Protocol Security (IPsec) in a first network, for a same data flow, a resource (e.g., a bandwidth) required in the first network is greater than a resource required in a second network, and therefore, a preset value range may be determined based on the tunnel encapsulation overhead, and a second target network slice satisfying the tunnel encapsulation overhead is selected from the second network according to the preset value range. It can be understood that the terminal may also directly use the sum of the qos parameter of the first target network slice and the tunnel encapsulation overhead as a qos reference for selecting the second target network slice from the second network, which is not limited in this application.
Step S203, establishing a session connection between the current terminal and the target application based on the first target network slice and the second target network slice.
In some embodiments, the terminal initiates a data connection request to the target application, and the first network, in response to the request, establishes a Security Association (SA) based on IPsec, where the Security Association is a Security Association for carrying data streams of the target application and the current terminal in the first network. A terminal maps a Protocol Data Unit (PDU) session bearing target security association in a first network to a resource of a first target network slice; mapping a protocol data unit session carrying the current terminal and the target application in the second network to a resource of a second target network slice; and establishing the session connection between the current terminal and the target application based on the resources of the first target network slice and the resources of the second target network slice.
In other words, the session connection procedure is actually a session modification procedure, i.e. a session is modified to a matching network slice by modifying session parameters, etc., so as to establish a session connection meeting the quality of service requirement.
In this embodiment, a service quality parameter of a first target network slice is obtained, a second target network slice in the second network, which is matched with the first target network slice, is determined according to the service quality parameter of the first target network slice, and a session connection between a current terminal and the target application is established based on the first target network slice and the second target network slice. The method determines whether the service quality capabilities of the network slices of different networks are matched or not through the service quality parameters of the network slices, so that the service quality capabilities of the network slices in the first network and the network slices in the second network used by the terminal are matched when the terminal is in conversation with the target application, waste of network resources on the side with higher service quality capabilities is avoided, and the utilization rate of the resources is improved.
Fig. 3 is a flowchart of a session method provided in another embodiment of the present application, where the session method is applicable to a terminal. As shown in fig. 3, the session method includes the following steps:
step S301, a quality of service parameter of the first target network slice is obtained.
Step S302, according to the service quality parameter of the first target network slice, determining a second target network slice matched with the first target network slice in the second network.
Steps S301 to S302 in this embodiment are the same as steps S201 to S202 in the previous embodiment of the present application, and are not described herein again.
Step S303, updating the historical network slice corresponding relation according to the first target network slice and the second target network slice matched with the first target network slice.
The historical network slice corresponding relation comprises a mapping relation between a first target network slice and a second target network slice.
It should be noted that, after the historical network slice correspondence relationship is established, if the terminal establishes the session connection with the target application again, the second target network slice may be determined according to the historical network slice correspondence relationship, so as to establish the session connection meeting the service quality requirement. In other words, when the first target network slice or the second target network slice is determined, the corresponding second target network slice or the corresponding first target network slice can be determined according to the historical network slice correspondence relationship.
For example, after the terminal determines a first target network slice, a second target network slice matching the first target network slice is determined according to the historical network slice correspondence.
And step S304, establishing session connection between the current terminal and the target application based on the first target network slice and the second target network slice.
Step S304 in this embodiment is the same as step S203 in the previous embodiment of this application, and is not described herein again.
In this embodiment, the historical network slice correspondence is updated according to the first target network slice and the second target network slice matched with the first target network slice, so that the historical network slice correspondence can be always maintained to be accurate. In addition, in addition to determining the second target network slice according to the service quality parameter of the network slice, the embodiment also provides a method for determining the second target network slice matched with the first target network slice according to the historical network slice corresponding relationship, so that the flexibility of determining the matched network slice can be improved.
Fig. 4 is a flowchart of a session method according to still another embodiment of the present application, where the session method is applicable to a terminal. As shown in fig. 4, the session method includes the following steps:
step S401, obtaining a quality of service parameter of the first target network slice.
Step S402, according to the service quality parameter of the first target network slice, determining a second target network slice matched with the first target network slice in the second network.
Steps S401 to S402 in this embodiment are the same as steps S201 to S202 in this embodiment, and are not described herein again.
Step S403, updating the subscription policy of the current terminal to the second network when it is determined that the second target network slice matching the first target network slice does not exist in the second network according to the qos parameter of the first target network slice.
The subscription policy refers to a policy used when a terminal subscribes to a service in a network. For example, if the subscription policy is a low service level, subscribing a network slice with lower quality of service capability from the second network based on the subscription policy; in another example, if the subscription policy is a high service level, a higher quality of service capable network slice is subscribed from the second network based on the subscription policy.
In some embodiments, in the case that it is determined from the quality of service parameter of the first target network slice that there is no second target network slice in the second network that matches the first target network slice, the network slice subscribed by the terminal in the second network is accounted for, whose quality of service capability is either higher than the first target network slice or lower than the first target network slice, but no network slice that is close to the first target network slice quality of service capability. Therefore, the subscription policy of the current terminal to the second network is updated, so that the terminal re-subscribes the network slice in the second network according to the updated subscription policy.
Step S404, the network slice of the second network is ordered based on the updated ordering strategy, and a third allowed network slice is obtained.
Wherein the third allowed network slice comprises a network slice subscribed by the terminal from the second network according to the updated subscription policy.
Step S405, selecting a second target network slice from the third allowable network slices according to the service quality parameter of the first target network slice.
The method for selecting the second target network slice from the third allowed network slices according to the qos parameters of the first target network slice is the same as the method for selecting the second target network slice from the second allowed network slices, and is not described herein again.
It should be noted that, in some embodiments, after selecting the second target network slice, the terminal may further update the historical network slice correspondence based on the selected second target network slice and the first target network slice.
Step S406, establishing a session connection between the current terminal and the target application based on the first target network slice and the second target network slice.
Step S406 in this embodiment is the same as step S203 in this embodiment, and is not described herein again.
In this embodiment, when the network slices ordered by the terminal in the second network do not meet the requirement, the ordering policy is updated, the terminal orders the network slices in the second network according to the updated ordering policy, and selects the second target network slice from the newly ordered network slices, so that when the terminal is in session with the target application, the network slices in the first network used are matched with the service quality capabilities of the network slices in the second network, thereby avoiding waste of network resources on the side with higher service quality capabilities, and improving the utilization rate of the resources.
Fig. 5 is a flowchart of a session method, which is applicable to a session function entity, according to another embodiment of the present application. As shown in fig. 5, the session method includes the following steps:
step S501, the service quality parameter of the first target network slice is sent to the terminal.
Wherein the first target network slice is a network slice in the current network that provides services for the target application.
In some embodiments, the terminal sends a registration request to the first network, and determines a first allowed network slice, wherein the first allowed network slice is a network slice for which the first network opens a use right for the current terminal; according to the terminal strategy configuration information, a first target network slice matched with the target application is determined to be selected from the first allowed network slices; and the first network sends the service quality parameters of the first target network slice to the terminal. The terminal policy configuration information includes local configuration information of the terminal and/or URSP. The URSP may be stored locally at the UE or may be obtained by the UE from the PCF of the first network.
Step S502, establishing session connection between the terminal and the target application based on the first target network slice and the second target network slice.
The second target network slice is determined according to the service quality parameter of the first target network slice, and the second network slice is matched with the first target network slice in the second network, and the second network is a network connecting the current network and the terminal.
In some embodiments, the terminal acquires second network subscription information; determining a second allowed network slice according to second network subscription information, wherein the second allowed network slice is a network slice in which a second network opens a use right for the current terminal; acquiring a service quality parameter of a second allowable network slice; calculating the service quality difference value of the first target network slice and the second allowable network slice according to the service quality parameter of the first target network slice and the service quality parameter of the second allowable network slice; and selecting a second target network slice from the second allowable network slices according to the service quality difference value between the first target network slice and the second allowable network slices and a preset value range. The terminal maps the PDU session bearing the target security association in the first network to the resource of the first target network slice, wherein the target security association is the security association used for bearing the data flow of the target application and the current terminal in the first network; mapping a protocol data unit session carrying the current terminal and the target application in the second network to a resource of a second target network slice; and establishing the session connection between the current terminal and the target application based on the resources of the first target network slice and the resources of the second target network slice.
In this embodiment, the service quality parameter of the first target network slice is sent to the terminal, and the session connection between the terminal and the target application is established based on the first target network slice and the second target network slice, so that when the terminal makes a session with the target application, the service quality capabilities of the network slice in the current network and the network slice in the second network are matched, which avoids the waste of the network resource on the side with higher service quality capability, and improves the utilization rate of the resource.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
A second aspect of the present application provides a terminal. Fig. 6 is a block diagram illustrating a terminal according to an embodiment of the present disclosure. As shown in fig. 6, the terminal 600 includes:
a parameter obtaining module 601 configured to obtain a quality of service parameter of the first target network slice.
A slice determination module 602 configured to determine a second target network slice in the second network that matches the first target network slice according to the quality of service parameter of the first target network slice.
A first session module 603 configured to establish a session connection between the current terminal and the target application based on the first target network slice and the second target network slice.
In some embodiments, the terminal 600 further comprises a relationship update module configured to update the historical network slice correspondence based on a first target network slice and a second target network slice matching the first target network slice.
In some other embodiments, the terminal 600 further includes a policy updating module, a slice updating module, and a slice selecting module, where the policy updating module is configured to update the subscription policy of the current terminal to the second network in a case that it is determined that a second target network slice matching the first target network slice does not exist in the second network according to the quality of service parameter of the first target network slice; the slice updating module is configured to subscribe the network slice of the second network based on the updated subscription policy, and obtain a third allowed network slice; the slice selection module is configured to select a second target network slice from the third allowed network slices according to the quality of service parameter of the first target network slice.
In this embodiment, a parameter obtaining module obtains a qos parameter of a first target network slice, a slice determining module determines a second target network slice in a second network, which is matched with the first target network slice, according to the qos parameter of the first target network slice, and a first session module establishes session connection between a current terminal and a target application based on the first target network slice and the second target network slice, so that when the terminal has a session with the target application, a network slice in the first network used is matched with a qos capability of a network slice in the second network, which avoids waste of network resources on the side with higher qos capability, and improves a utilization rate of resources.
A third aspect of the present application provides a session function entity. Fig. 7 is a block diagram illustrating a session function entity according to an embodiment of the present disclosure. As shown in fig. 7, the session function entity 700 includes:
a sending module 701 configured to send the quality of service parameter of the first target network slice to the terminal.
A second session module 702 configured to establish a session connection between the terminal and the target application based on the first target network slice and the second target network slice.
In this embodiment, the sending module sends the qos parameter of the first target network slice to the terminal, and the second session module establishes session connection between the terminal and the target application based on the first target network slice and the second target network slice, so that when the terminal makes a session with the target application, the qos capabilities of the network slice in the first network and the network slice in the second network used are matched, thereby avoiding waste of network resources on the side with higher qos capabilities, and improving the utilization rate of resources.
A fourth aspect of the present application provides a conversation system. Fig. 8 is a schematic composition diagram of a session system according to an embodiment of the present application. As shown in fig. 8, the conversation system 800 includes: a terminal 801, a second network 802, a first network 803 and a target application 804.
In some embodiments, the terminal 801 accesses the second network 802 and the first network 803 through the second network 802, and the target application 804 connects to the first network 803, upon which the terminal 801 establishes a session connection with the target application 804 sequentially through the second network 802 and the first network 803.
Fig. 9 is a schematic signaling interaction diagram of a session system according to an embodiment of the present application. As shown in fig. 9, the signaling interaction procedure includes:
in step S901, the terminal 801 accesses the second network 802.
In step S902, the terminal 801 transmits a registration request to the first network 803 via the second network 802, thereby accessing the first network 803.
In step S903, the terminal 801 transmits an NSSAI inquiry permission request to the first network 803.
In step S904, the first network 803 feeds back the NSSAI allowed to the terminal 801.
In step S905, the terminal 801 selects a first target network slice from the allowed NSSAI according to the terminal policy configuration information.
Wherein the first target network slice is a network slice in the first network 803 that provides services for the target application 804. The target application 804 is an application program located in the first network 803 or accessing the first network 803.
In step S906, the terminal 801 sends a quality of service parameter query request to the first network 803.
In step S907, the first network 803 feeds back the service quality parameter of the first target network slice to the terminal 801.
In step S908, the terminal 801 acquires the second network 802 subscription information from the second network 802.
In step S909, the terminal 801 determines a second allowed network slice according to the second network subscription information.
Wherein the second allowed network slice is a network slice in which the second network 802 opens the usage right for the current terminal 801.
In step S910, the terminal 801 acquires a quality of service parameter of the second allowed network slice.
In step S911, the terminal 801 calculates a qos difference between the first target network slice and the second allowed network slice according to the qos parameter of the first target network slice and the qos parameter of the second allowed network slice, and selects the second target network slice from the second allowed network slice according to the qos difference between the first target network slice and the second allowed network slice and a preset value range.
In step S912, the terminal 801 initiates a data connection request to the target application 804.
In step S913, the first network 803 responds to the data connection request, and establishes the target SA based on IPsec.
The target SA is a security association for carrying data flows of the target application 804 and the terminal 801 in the first network 803.
In step S914, the terminal 801 maps the PDU session carrying the target security association in the first network 803 to the resource of the first target network slice.
Step S915, the terminal 801 maps the protocol data unit session in the second network 802 carrying the current terminal 801 and the target application 804 to the resource of the second target network slice
In step S916, the terminal 801 establishes a session connection between the current terminal 801 and the target application 804 based on the resources of the first target network slice and the resources of the second target network slice.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present application, a unit that is not so closely related to solving the technical problem proposed by the present application is not introduced in the present embodiment, but it does not indicate that no other unit exists in the present embodiment.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present application, and that the present application is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the application, and these changes and modifications are to be considered as the scope of the application.
Claims (10)
1. A session method, comprising:
obtaining a service quality parameter of a first target network slice, wherein the first target network slice is a network slice which provides service for a target application in a first network;
determining a second target network slice matched with the first target network slice in a second network according to the service quality parameter of the first target network slice, wherein the second network is a network connecting the first network and the current terminal;
establishing a session connection between the current terminal and the target application based on the first target network slice and the second target network slice.
2. The session method of claim 1, wherein the obtaining the quality of service parameter of the first target network slice comprises:
sending a registration request to the first network, and determining a first allowed network slice, wherein the first allowed network slice is a network slice for the first network to open the use permission for the current terminal;
selecting the first target network slice matched with the target application from the first allowed network slices according to terminal strategy configuration information;
obtaining quality of service parameters for the first target network slice from the first network.
3. The session method of claim 1, wherein the determining a second target network slice in a second network that matches the first target network slice according to the quality of service parameter of the first target network slice comprises:
acquiring second network ordering information;
determining a second allowed network slice according to the second network subscription information, wherein the second allowed network slice is a network slice for the second network to open the use right for the current terminal;
obtaining a service quality parameter of the second allowed network slice;
calculating a difference value of the service quality of the first target network slice and the second allowed network slice according to the service quality parameter of the first target network slice and the service quality parameter of the second allowed network slice;
and selecting the second target network slice from the second allowed network slices according to the service quality difference value between the first target network slice and the second allowed network slices and a preset value range.
4. The session method according to any of claims 1 to 3, wherein after determining a second target network slice in a second network matching the first target network slice according to the quality of service parameter of the first target network slice, further comprising:
and updating the corresponding relation of the historical network slices according to the first target network slice and a second target network slice matched with the first target network slice.
5. The session method of claim 1, wherein the determining a second target network slice in a second network that matches the first target network slice according to the quality of service parameter of the first target network slice comprises:
and determining the second target network slice matched with the first target network slice according to the service quality parameter of the first target network slice and the corresponding relation of the historical network slices, wherein the historical network slice information is the corresponding relation obtained according to the first target network slice and the second target network slice matched with the first target network slice.
6. The session method according to claim 1, wherein after determining a second target network slice in a second network matching the first target network slice according to the quality of service parameter of the first target network slice, further comprising:
updating the subscription strategy of the current terminal to the second network under the condition that the second target network slice matched with the first target network slice does not exist in the second network according to the service quality parameter of the first target network slice;
ordering the network slice of the second network based on the updated ordering strategy to obtain a third allowed network slice;
and selecting the second target network slice from the third allowed network slices according to the service quality parameters of the first target network slice.
7. The session method according to claim 1, wherein the establishing a session connection between the current terminal and the target application based on the first target network slice and the second target network slice comprises:
mapping a protocol data unit session carrying a target security association in the first network to a resource of the first target network slice, wherein the target security association is a security association for carrying a data stream of the target application and the current terminal in the first network;
mapping a protocol data unit session carrying the current terminal and the target application in the second network to the resource of the second target network slice;
and establishing the session connection between the current terminal and the target application based on the resources of the first target network slice and the resources of the second target network slice.
8. A session method, comprising:
sending a service quality parameter of a first target network slice to a terminal, wherein the first target network slice is a network slice which provides service for a target application in a current network;
and establishing a session connection between the terminal and the target application based on the first target network slice and a second target network slice, wherein the second target network slice is a network slice which is determined according to the service quality parameter of the first target network slice and is matched with the first target network slice in a second network, and the second network is a network for connecting the current network and the terminal.
9. A terminal, comprising:
a parameter obtaining module configured to obtain a quality of service parameter of a first target network slice, wherein the first target network slice is a network slice in a first network that provides a service for a target application;
a slice determining module configured to determine a second target network slice in a second network, which matches the first target network slice, according to the quality of service parameter of the first target network slice, wherein the second network is a network connecting the first network and a current terminal;
a first session module configured to establish a session connection between the current terminal and the target application based on the first target network slice and the second target network slice.
10. A session function entity, comprising:
the terminal comprises a sending module, a receiving module and a processing module, wherein the sending module is configured to send a service quality parameter of a first target network slice to the terminal, and the first target network slice is a network slice which provides service for a target application in a current network;
a second session module configured to establish a session connection between the terminal and the target application based on the first target network slice and a second target network slice, wherein the second target network slice is a network slice matching the first target network slice in a second network determined according to the quality of service parameter of the first target network slice, and the second network is a network connecting the current network and the terminal.
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