CN114158076A

CN114158076A - Policy generation method, device and storage medium

Info

Publication number: CN114158076A
Application number: CN202111525079.6A
Authority: CN
Inventors: 刘珊; 黄蓉; 王友祥
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-03-08
Anticipated expiration: 2041-12-14
Also published as: CN114158076B

Abstract

The invention provides a strategy generation method, equipment and a storage medium, relates to the technical field of communication, and is used for guaranteeing the service quality of services in an access network. The method comprises the following steps: the first NWDAF device sends a first request message to the UPF device; the first request message is used for requesting to acquire the current service data of the target service; the target service is a service in the MEC equipment; the method comprises the steps that a first NWDAF device receives current service data of a target service sent by a UPF device; the first NWDAF device sends a second request message to the base station device; the second request message is used for requesting to acquire the current network resource information of the wireless access network; the first NWDAF device receives current network resource information sent by the base station device; the first NWDAF device generates an optimization strategy according to the current network resource information, the current service data and a pre-trained strategy model; the optimization strategy is used to optimize the target traffic.

Description

Policy generation method, device and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a policy generation method, device, and storage medium.

Background

A fifth-Generation mobile communication (5th-Generation, 5G) system introduces a network data analysis function (NWDAF) in a core network. The NWDAF, as a bearer entity for customized data collection and intelligent analysis, not only can collect data from a Network Function (NF), an Application Function (AF), and Operation Administration and Maintenance (OAM) of a 5G core network (5GC), but also has intelligent analysis capabilities (such as calculation, training, inference, prediction, etc.), and outputs an analysis result to the NF, AF, or OAM for NF, AF, or OAM decision making.

However, with the application of 5G in the multi-level internet of things and the vertical industry (private network), in order to ensure the business experience in the vertical industry, an edge computing (MEC) technology is introduced. Typically, the MEC equipment is located in the radio access network so that some traffic can be processed directly in the radio access network. At this time, the NWDAF located in the large-area core network cannot acquire the service data in the MEC device, and therefore an effective policy cannot be generated to ensure the service quality of these services.

Disclosure of Invention

The embodiment of the invention provides a strategy generation method, equipment and a storage medium, which are used for guaranteeing the service quality of services in an access network.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a policy generation method is provided, which is applied to a radio access network, where the radio access network includes a first network data analysis function NWDAF device, a user plane function UPF device, an edge service MEC device, and a base station device, the first NWDAF device is connected to the UPF device and the base station device, and the UPF device is connected to the MEC device; the method comprises the following steps: the first NWDAF device sends a first request message to the UPF device; the first request message is used for requesting to acquire the current service data of the target service; the target service is a service in the MEC equipment; the method comprises the steps that a first NWDAF device receives current service data of a target service sent by a UPF device; the first NWDAF device sends a second request message to the base station device; the second request message is used for requesting to acquire the current network resource information of the wireless access network; the first NWDAF device receives current network resource information sent by the base station device; the first NWDAF device generates an optimization strategy according to the current network resource information, the current service data and a pre-trained strategy model; the optimization strategy is used to optimize the target traffic.

Optionally, the optimization strategies include a first optimization strategy and a second optimization strategy, where the first optimization strategy is used to adjust network resources of the radio access network, and the second optimization strategy is used to adjust network resources of the core network, and the method further includes: and sending the first optimization strategy to the base station equipment and/or sending the second optimization strategy to a strategy control function PCF equipment of the core network.

Optionally, the method further includes: the first NWDAF device sends a registration request to the second NWDAF device; the registration request is to request establishment of communication between the first NWDAF device and the two NWDAF devices.

Optionally, the sending, by the first NWDAF device, the first request message to the UPF device includes: responding to the indication message sent by the second NWDAF device, and sending a first request message to the UPF device; the indication message is used for indicating that the target service of the first NWDAF device is started; the first NWDAF device sends a second request message to the base station device, comprising: and responding to the indication message, and sending a second request message to the base station equipment.

Optionally, the method further includes: the method comprises the steps that a first NWDAF device obtains service information of a plurality of services from MEC devices; the plurality of services comprise target services, and the service information comprises service identification and service requirements; the first NWDAF device transmits the plurality of service information to the second NWDAF device to cause the second NWDAF device to transmit an indication message to the first NWDAF device after the target service begins.

Optionally, the method further includes: the method comprises the steps that a first NWDAF device obtains service requirements and a plurality of sample data of a target service; each sample data comprises historical service data, historical network resource information and an optimization strategy; the first NWDAF device trains to obtain a strategy model based on the service requirement of the target service and a plurality of sample data.

In a second aspect, a first network data analysis function NWDAF device is provided, which is applied to a radio access network, where the radio access network includes the first network data analysis function NWDAF device, a user plane function UPF device, an edge service MEC device, and a base station device, the first NWDAF device is connected to the UPF device and the base station device, and the UPF device is connected to the MEC device; the first NWDAF device includes a transmitting unit, a receiving unit, and a generating unit; the sending unit is used for sending a first request message to the UPF equipment; the first request message is used for requesting to acquire the current service data of the target service; the target service is a service in the MEC equipment; the receiving unit is used for receiving the current service data of the target service sent by the UPF equipment; the sending unit is further used for sending a second request message to the base station equipment; the second request message is used for requesting to acquire the current network resource information of the wireless access network; a receiving unit, configured to receive current network resource information sent by a base station device; the generating unit is used for generating an optimization strategy according to the current network resource information, the current service data and the pre-trained strategy model; the optimization strategy is used to optimize the target traffic.

Optionally, the optimization policy includes a first optimization policy and a second optimization policy, where the first optimization policy is used to adjust network resources of the radio access network, and the second optimization policy is used to adjust network resources of the core network, and the sending unit is further configured to: and sending the first optimization strategy to the base station equipment and/or sending the second optimization strategy to a strategy control function PCF equipment of the core network.

Optionally, the sending unit is further configured to: sending a registration request to the second NWDAF device; the registration request is to request establishment of communication between the first NWDAF device and the two NWDAF devices.

Optionally, the sending unit is specifically configured to: responding to the indication message sent by the second NWDAF device, and sending a first request message to the UPF device; the indication message is used for indicating that the target service of the first NWDAF device is started; and responding to the indication message, and sending a second request message to the base station equipment.

Optionally, the first NWDAF device further includes an obtaining unit; the acquiring unit is used for acquiring service information of a plurality of services from the MEC equipment; the plurality of services comprise target services, and the service information comprises service identification and service requirements; and the transmitting unit is further used for transmitting the plurality of service information to the second NWDAF device so that the second NWDAF device transmits an indication message to the first NWDAF device after the target service starts.

Optionally, the obtaining unit is further configured to obtain a service requirement of the target service and a plurality of sample data; each sample data comprises historical service data, historical network resource information and an optimization strategy; the first NWDAF device further includes a training unit, where the training unit is configured to train to obtain a policy model based on a service requirement of the target service and a plurality of sample data.

In a third aspect, a network data analysis function NWDAF device is provided, comprising: a processor, a memory for storing processor-executable instructions; wherein the processor is configured to execute the instructions to implement the policy generation method of the first aspect.

In a fourth aspect, there is provided a computer-readable storage medium comprising instructions which, when executed by a processor, cause the processor to perform the policy generation method of the first aspect described above.

The technical scheme provided by the invention at least has the following beneficial effects: compared with the prior art that the NWDAF is arranged on a core network, the first NWDAF equipment can send a first request message to the UPF equipment to request to acquire the current service data of a target service in the MEC equipment; the first NWDAF device also sends a second request message to the base station device to request to acquire current network resource information of the radio access network. Correspondingly, the first NWDAF device receives current service data of a target service sent by the UPF device and current network resource information sent by the base station device; and finally, the first NWDAF device generates an optimization strategy for optimizing the target service according to the current network resource information, the current service data and the pre-trained strategy model so as to guarantee the service quality of the service in the MEC device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a 5G system architecture according to an embodiment of the present invention;

fig. 2 is a schematic system structure diagram of a 5G communication system in the vertical industry according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 4 is a first flowchart of a policy generation method according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a policy generation method according to an embodiment of the present invention;

FIG. 6 is a first NWDAF device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a first NWDAF apparatus according to an embodiment of the present invention.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

It should be noted that, in the embodiments of the present invention, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that, when the difference is not emphasized, the intended meaning is consistent.

For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like are not limited in number or execution order.

The following describes a related art to which embodiments of the present invention relate.

The 5G system introduces an NWDAF device in a core network. As shown in fig. 1, an embodiment of the present invention provides a 5G system architecture diagram illustrating the location of an NWDAF device in an existing 5G system. One of the main purposes of the NWDAF device is to provide Service Level Agreement (SLA) guarantee for services in the 5G system. Specifically, the NWDAF device may perform data interaction with each network element in the core network through the bus to collect network data of each network element in the core network, and feed back an analysis result to each network element in the core network. For example, when a user experiences a lower SLA, the NWDAF device will generate a corresponding SLA boosting policy.

However, with the application of 5G in the multi-level internet of things and the vertical industry (private network), in order to ensure the business experience in the vertical industry, an edge computing (MEC) technology is introduced. As shown in fig. 2, an embodiment of the present invention provides a system structure diagram of a 5G communication system in a vertical industry, where MEC equipment and User Plane Function (UPF) equipment are located in a radio access network, so that some services may be directly processed in the radio access network. At this time, the NWDAF located in the large-area core network cannot acquire the service data in the MEC device, and therefore an effective policy cannot be generated to ensure the service quality of these services.

The strategy generation method provided by the embodiment of the invention can be suitable for a communication system of a wireless network, and the communication system is applied to a wireless access network. Fig. 3 shows a schematic structural diagram of the communication system. As shown in fig. 3, the communication system 10 includes a first NWDWF device 11, a UPF device 12, an MEC device 13, and a base station device 14. The first NWDAF11 device is connected to the UPF device 12 and the base station device 14, and the UPF device 12 is connected to the MEC device 13.

The UPF device 12 is used to route the target service to the MEC device 13 and record service data of the target service.

The first NWDAF device 11 is configured to send a first request message to the UPF device 12; the first NWDAF device 11 is further configured to receive current service data of the target service sent by the UPF device 12.

The first NWDAF apparatus 11 is configured to send a second request message to the base station apparatus 14; the first NWDAF device 11 is further configured to receive current network resource information sent by the base station device.

The first NWDAF device 11 is further configured to generate an optimization strategy according to the current network resource information, the current service data, and the pre-trained strategy model.

The following describes a policy generation method provided by an embodiment of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 4, the policy generation method provided in the embodiment of the present invention includes the following steps S201 to S205:

s201, the first NWDAF device sends a first request message to the UPF device.

The first request message is used for requesting to acquire the current service data of the target service; the target service is a service in the MEC device.

It should be noted that the first NWDAF device and the UPF device communicate with each other through the service interface.

As a possible implementation manner, after the target service is started, the first NWDAF device sends a first request message to the UPF device through the service interface to request to acquire current service data of the target service.

The first request message includes an identifier of the target service and the requested service data.

The service data required to be requested can be set in the first NWDAF device by operation and maintenance personnel in advance; for example, the traffic data may be one or more of transmission rate, delay, jitter, positioning, periodicity; the service data may also include data specific to the target service, such as service data of real-time mobile trucks of the plant, which is not limited by the embodiment of the present invention.

S202, the first NWDAF device receives current service data of the target service sent by the UPF device.

As one possible implementation manner, after the first NWDAF device sends the first request message to the UPF device, the UPF device sends current service data of the target service to the first NWDAF device through the service interface. Correspondingly, the first NWDAF device receives, through the service interface, current service data of the target service sent by the UPF device.

S203, the first NWDAF device sends a second request message to the base station device.

The second request message is used for requesting to acquire the current network resource information of the wireless access network.

It should be noted that the first NWDAF device and the base station device communicate with each other through an information interface (EI) interface of the intelligent control platform.

As a possible implementation manner, after the target service is started, the first NWDAF device sends a second request message to the base station device through the EI interface to request to acquire current network resource information of the radio access network.

The second request message includes information of network resources to be requested. The network resource information required to be requested may be set in the first NWDAF device by the operation and maintenance staff in advance; for example, the network resource information may be a Resource Block (RB) that can be scheduled by the current wireless-side data channel.

S204, the first NWDAF device receives current network resource information sent by the base station device.

As a possible implementation manner, after the first NWDAF apparatus sends the second request message to the base station apparatus, the base station apparatus sends the current network resource information to the first NWDAF apparatus through the EI interface. Correspondingly, the first NWDAF device receives the current network resource information sent by the base station device through the EI interface.

S205, the first NWDAF device generates an optimization strategy according to the current network resource information, the current service data and the pre-trained strategy model.

Wherein the optimization strategy is used for optimizing the target service.

As a possible implementation manner, the first NWDAF device inputs the current network resource information and the current service data into a pre-trained policy model to generate an optimization policy.

In one design, to enable optimization of a target service, the optimization strategies include a first optimization strategy and a second optimization strategy.

The first optimization strategy is used for adjusting network resources of the wireless access network, and the second optimization strategy is used for adjusting network resources of the core network.

Optionally, as shown in fig. 5, the policy generation method provided in the embodiment of the present invention further includes the following step S301.

S301, the first NWDAF device sends a first optimization strategy to the base station device.

Illustratively, the first NWDAF device sends the first optimization policy to the base station device, so that the base station device adjusts uplink or downlink subframe configuration of the target service, or reschedules RB resource scheduling.

Optionally, as shown in fig. 5, the policy generation method provided in the embodiment of the present invention further includes the following step S302.

S302, the first NWDAF device sends a second optimization strategy to a strategy control function PCF device of the core network.

It should be noted that the communication system 10 in the embodiment of the present invention further includes a core network, where the core network includes a Policy Control Function (PCF) device.

Illustratively, the first NWDAF device sends the second optimization policy to the PCF device of the core network, so that the PCF device of the core network promotes a quality of service (QOS) level of the target service.

In one design, to enable the first NWDAF to communicate with the second NWDAF, as shown in fig. 5, the policy generation method provided by the embodiment of the present invention further includes the following S401.

S401, the first NWDAF device sends a registration request to the second NWDAF device.

Wherein the registration request is to request establishment of communication between the first NWDAF device and the two NWDAF devices.

It should be noted that the second NWDAF device is an upper device of the first NWDAF device, and the second NWDAF device is disposed in the core network. The first NWDAF device communicates with the second NWDAF device via a service interface.

As one possible implementation, the first NWDAF device transmits a registration request to the second NWDAF device via the servitization interface to establish communication with the second NWDAF device.

In one design, in order to send the first request message to the UPF device, as shown in fig. 5, S201 provided in the embodiment of the present invention specifically includes the following S2011.

S2011, the first NWDAF device sends the first request message to the UPF device in response to the indication message sent by the second NWDAF device.

The indication message is used for indicating that the target service of the first NWDAF device is started.

As one possible implementation, a first NWDAF device subscribes to a target service in advance in a second NWDAF device located in a core network. And after the target service is started, the first NWDAF device sends a first request message to the UPF device after receiving the indication message sent by the second NWDAF device.

Similarly, S203 provided in the embodiment of the present invention specifically includes S2031 described below.

S2031, the first NWDAF device transmits a second request message to the base station device in response to the indication message.

In one design, to enable the first NWDAF to send the indication message by the second NWDAF device, as shown in fig. 5, the policy generation method provided in this embodiment of the present invention further includes the following step S501.

S501, the first NWDAF device obtains service information of multiple services from the MEC device.

The plurality of services comprise target services, and the service information comprises service identification and service requirements.

It should be noted that the first NWDAF device and the MEC device are connected through an Application Programming Interface (API).

As a possible implementation manner, before the target service starts, the first NWDAF device acquires, through the API interface, service identifiers of multiple services and service requirements under the corresponding identifiers from the MEC device.

The specifically acquired service requirement is set in advance in the first NWDAF device by the operation and maintenance personnel. For example, the traffic requirements include transmission rate requirements, delay requirements, jitter requirements, and the like of the traffic.

S502, the first NWDAF device sends a plurality of service messages to the second NWDAF device, so that the second NWDAF device sends an indication message to the first NWDAF device after the target service starts.

As a possible implementation manner, after the first NWDAF device acquires service information of multiple services from the MEC device, the first NWDAF device forwards the acquired service information to the second NWDAF device located in the core network, so that the second NWDAF device sends an indication message to the first NWDAF device after the target service starts.

In one design, in order to train and obtain the policy model, the policy generation method provided in the embodiment of the present invention further includes the following steps S601 to S602.

S601, the first NWDAF device obtains service requirements and a plurality of sample data of a target service.

Wherein, each sample data comprises a historical service data, a historical network resource information and an optimization strategy.

As a possible implementation manner, the first NWDAF device obtains a service requirement of the target service from the MEC device, and obtains a plurality of sample data from a preset sample library.

Note that the sample library is created in advance by the operation and maintenance personnel in the first NWDAF device.

S602, the first NWDAF device trains and obtains a strategy model based on the service requirement of the target service and a plurality of sample data.

As a possible implementation manner, the first NWDAF device takes the historical service data, the historical network resource information, and the service requirement of the target service in each sample data as features, takes the optimization strategy in each sample data as a label, and trains the initial strategy model to obtain the strategy model.

It should be noted that the initial policy model is set in advance in the first NWDAF device by the operation and maintenance personnel.

The specific implementation manner of the detection model obtained by training in this step may refer to the description in the prior art, and is not described herein again.

The technical scheme provided by the embodiment at least has the following beneficial effects: compared with the prior art that the NWDAF is arranged on a core network, the first NWDAF equipment can send a first request message to the UPF equipment to request to acquire the current service data of a target service in the MEC equipment; the first NWDAF device also sends a second request message to the base station device to request to acquire current network resource information of the radio access network. Correspondingly, the first NWDAF device receives current service data of a target service sent by the UPF device and current network resource information sent by the base station device; and finally, the first NWDAF device generates an optimization strategy for optimizing the target service according to the current network resource information, the current service data and the pre-trained strategy model so as to guarantee the service quality of the service in the MEC device.

The above embodiments mainly describe the scheme provided by the embodiments of the present invention from the perspective of apparatuses (devices). It is understood that, in order to implement the above method, the device or apparatus includes hardware structures and/or software modules corresponding to the execution of each method flow, and the hardware structures and/or software modules corresponding to the execution of each method flow may constitute a material information determination device. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, in conjunction with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The embodiments of the present invention may perform the division of the functional modules on the apparatuses or devices according to the above method examples, for example, the apparatuses or devices may divide the functional modules corresponding to the functions, or may integrate two or more functions into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 6 shows a possible configuration of the first NWDAF apparatus in the case of dividing each functional module by corresponding functions. As shown in fig. 6, the detection apparatus 70 according to the embodiment of the present invention includes a sending unit 701, a receiving unit 702, and a generating unit 703.

A sending unit 701, configured to send a first request message to a UPF device; the first request message is used for requesting to acquire the current service data of the target service; the target service is a service in the MEC equipment; for example, as shown in fig. 4, the transmitting unit 701 may be configured to execute S201.

A receiving unit 702, configured to receive current service data of a target service sent by a UPF device; for example, as shown in fig. 4, the receiving unit 702 may be configured to perform S202.

A sending unit 701, configured to send a second request message to the base station device; the second request message is used for requesting to acquire the current network resource information of the wireless access network; for example, as shown in fig. 4, the transmitting unit 701 may be configured to execute S203.

A receiving unit 702, configured to receive current network resource information sent by a base station device; for example, as shown in fig. 4, the receiving unit 702 may be configured to perform S204.

A generating unit 703, configured to generate an optimization strategy according to the current network resource information, the current service data, and the pre-trained strategy model; the optimization strategy is used to optimize the target traffic. For example, as shown in fig. 4, the generating unit 703 may be configured to execute S205.

Optionally, the optimization strategies include a first optimization strategy and a second optimization strategy, where the first optimization strategy is used to adjust network resources of the radio access network, the second optimization strategy is used to adjust network resources of the core network, and the sending unit 701 is further configured to: and sending the first optimization strategy to the base station equipment and/or sending the second optimization strategy to a strategy control function PCF equipment of the core network.

Optionally, the sending unit 701 is further configured to: sending a registration request to the second NWDAF device; the registration request is to request establishment of communication between the first NWDAF device and the two NWDAF devices.

Optionally, the sending unit 701 is specifically configured to: responding to the indication message sent by the second NWDAF device, and sending a first request message to the UPF device; the indication message is used for indicating that the target service of the first NWDAF device is started; and responding to the indication message, and sending a second request message to the base station equipment.

Optionally, the first NWDAF device 70 further comprises an obtaining unit 704; an obtaining unit 704, configured to obtain service information of multiple services from the MEC device; the plurality of services comprise target services, and the service information comprises service identification and service requirements.

Optionally, the sending unit 701 is further configured to send a plurality of service information to the second NWDAF device, so that the second NWDAF device sends an indication message to the first NWDAF device after the target service starts.

Optionally, the obtaining unit 704 is further configured to obtain a service requirement of the target service and a plurality of sample data; each sample data includes a historical traffic data, a historical network resource information, and an optimization policy.

Optionally, the first NWDAF device 70 further includes a training unit 705, where the training unit 705 is configured to train to obtain a policy model based on the service requirement of the target service and a plurality of sample data.

With regard to the apparatus and the device in the foregoing embodiments, the specific manner in which each module executes the operation and the corresponding beneficial effects have been described in detail in the foregoing embodiments of the method for determining material information, and are not described again here.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 7 is a schematic structural diagram of an NWDAF apparatus provided by the present invention. As shown in fig. 7, the NWDAF apparatus 80 may include at least one processor 801 and a memory 803 for storing processor-executable instructions. Wherein the processor 801 is configured to execute instructions in the memory 803 to implement the policy generation method in the above-described embodiments.

Additionally, the NWDAF device 80 may also include a communication bus 802 and at least one communication interface 804.

The processor 801 may be a Central Processing Unit (CPU), a micro-processing unit, an ASIC, or one or more integrated circuits for controlling the execution of programs according to the present invention.

The communication bus 802 may include a path that conveys information between the aforementioned components.

The communication interface 804 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), etc.

The memory 803 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be self-contained and connected to the processing unit by a bus. The memory may also be integrated with the processing unit.

The memory 803 is used for storing instructions for implementing the inventive arrangements and is controlled in execution by the processor 801. The processor 801 is adapted to execute instructions stored in the memory 803 to implement the functions of the method of the present invention.

In particular implementations, processor 801 may include one or more CPUs such as CPU0 and CPU1 in fig. 7 as an example.

In particular implementations, the NWDAF apparatus 80 may include multiple processors, such as the processor 801 and the processor 807 of fig. 7, for example, as an embodiment. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In particular implementations, the NWDAF apparatus 80 may also include an output device 805 and an input device 806, as one embodiment. The output device 805 is in communication with the processor 801 and may display information in a variety of ways. For example, the output device 805 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 806 is in communication with the processor 801 and can accept user input in a variety of ways. For example, the input device 806 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

Those skilled in the art will appreciate that the configuration shown in FIG. 7 does not constitute a limitation of the NWDAF device 80, and may include more or fewer components than shown, or combine certain components, or employ a different arrangement of components.

In addition, the present invention also provides a computer-readable storage medium comprising instructions which, when executed by a processor, cause the processor to perform the detection method provided by the above embodiment.

In addition, the present invention also provides a computer program product comprising computer instructions which, when run on an NWDAF device, cause the NWDAF device to perform the policy generation method as provided in the above embodiments.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. A strategy generation method is applied to a wireless access network, wherein the wireless access network comprises a first network data analysis function (NWDAF) device, a User Plane Function (UPF) device, an edge service (MEC) device and a base station device, the first NWDAF device is respectively connected with the UPF device and the base station device, and the UPF device is connected with the MEC device; the method comprises the following steps:

the first NWDAF device sends a first request message to the UPF device; the first request message is used for requesting to acquire the current service data of the target service; the target service is a service in the MEC equipment;

the first NWDAF device receives current service data of the target service sent by the UPF device;

the first NWDAF device sends a second request message to the base station device; the second request message is used for requesting to acquire the current network resource information of the wireless access network;

the first NWDAF device receives the current network resource information sent by the base station device;

the first NWDAF device generates an optimization strategy according to the current network resource information, the current service data and a pre-trained strategy model; the optimization strategy is used for optimizing the target service.

2. The policy generation method according to claim 1, wherein the optimization policy comprises a first optimization policy and a second optimization policy, the first optimization policy is used for adjusting network resources of the radio access network, and the second optimization policy is used for adjusting network resources of a core network, the method further comprising:

and sending the first optimization strategy to the base station equipment, and/or sending the second optimization strategy to Policy Control Function (PCF) equipment of the core network.

3. The policy generation method according to claim 1 or 2, wherein the method further comprises:

the first NWDAF device sending a registration request to a second NWDAF device; the registration request is to request establishment of communication between the first NWDAF device and the two NWDAF devices.

4. The policy generation method of claim 3, wherein sending, by the first NWDAF device, a first request message to the UPF device comprises: transmitting the first request message to the UPF device in response to the indication message transmitted by the second NWDAF device; the indication message is used for indicating that the target service of the first NWDAF device is started;

the first NWDAF device sending a second request message to the base station device, comprising: and responding to the indication message, and sending the second request message to the base station equipment.

5. The policy generation method according to claim 4, further comprising:

the first NWDAF device acquires service information of a plurality of services from the MEC device; the plurality of services comprise the target service, and the service information comprises a service identifier and a service requirement;

the first NWDAF device transmits the plurality of traffic information to the second NWDAF device to cause the second NWDAF device to transmit the indication message to the first NWDAF device after the target traffic begins.

6. The policy generation method according to claim 1 or 2, wherein the method further comprises:

the first NWDAF device acquires the service requirement of the target service and a plurality of sample data; each sample data comprises historical service data, historical network resource information and an optimization strategy;

the first NWDAF device trains to obtain the policy model based on the service requirement of the target service and the plurality of sample data.

7. A first network data analysis function (NWDAF) device is applied to a wireless access network, and the wireless access network comprises a first network data analysis function (NWDAF) device, a User Plane Function (UPF) device, an edge service (MEC) device and a base station device, wherein the first NWDAF device is respectively connected with the UPF device and the base station device, and the UPF device is connected with the MEC device; the first NWDAF device includes a transmitting unit, a receiving unit, and a generating unit;

the sending unit is used for sending a first request message to the UPF equipment; the first request message is used for requesting to acquire the current service data of the target service; the target service is a service in the MEC equipment;

the receiving unit is configured to receive current service data of the target service sent by the UPF device;

the sending unit is further configured to send a second request message to the base station device; the second request message is used for requesting to acquire the current network resource information of the wireless access network;

the receiving unit is configured to receive the current network resource information sent by the base station device;

the generating unit is used for generating an optimization strategy according to the current network resource information, the current service data and a pre-trained strategy model; the optimization strategy is used for optimizing the target service.

8. The first NWDAF device of claim 7, wherein the optimization policy comprises a first optimization policy to adjust network resources of the radio access network and a second optimization policy to adjust network resources of a core network, the sending unit further to:

9. The first NWDAF device of claim 7 or 8, wherein the transmitting unit is further to:

sending a registration request to the second NWDAF device; the registration request is to request establishment of communication between the first NWDAF device and the two NWDAF devices.

10. The first NWDAF device of claim 9, wherein the transmitting unit is further configured to: transmitting the first request message to the UPF device in response to the indication message transmitted by the second NWDAF device; the indication message is used for indicating that the target service of the first NWDAF device is started;

and responding to the indication message, and sending the second request message to the base station equipment.

11. The first NWDAF apparatus of claim 10, wherein the first NWDAF apparatus further comprises an acquisition unit;

the acquiring unit is used for acquiring service information of a plurality of services from the MEC equipment; the plurality of services comprise the target service, and the service information comprises a service identifier and a service requirement;

the sending unit is further configured to send the plurality of pieces of service information to the second NWDAF device, so that the second NWDAF device sends the indication message to the first NWDAF device after the target service starts.

12. The first NWDAF device of claim 7 or 8, wherein the obtaining unit is further configured to obtain a traffic demand of the target traffic and a plurality of sample data; each sample data comprises historical service data, historical network resource information and an optimization strategy;

the first NWDAF device further includes a training unit, where the training unit is configured to train to obtain the policy model based on the service requirement of the target service and the plurality of sample data.

13. A network data analysis function, NWDAF, apparatus, comprising: a processor, a memory for storing instructions executable by the processor; wherein the processor is configured to execute instructions to implement the policy generation method provided by any one of claims 1-6.

14. A computer-readable storage medium comprising instructions that, when executed by a processor, cause the processor to perform the policy generation method provided by any one of claims 1-6.