CN116193561A

CN116193561A - Synchronous resource information acquisition method, communication device and storage medium

Info

Publication number: CN116193561A
Application number: CN202111446859.1A
Authority: CN
Inventors: 孙继承; 夏凯
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-05-30
Also published as: WO2023093393A1

Abstract

The invention discloses a synchronous resource information acquisition method, communication equipment and a storage medium, wherein the method comprises the following steps: and sending first synchronous notification information to the AMF network element of the access or mobility management function, wherein the first synchronous notification information comprises first resource information used for synchronizing with the AMF network element and one or more pieces of second synchronous notification information used for being sent to the target network element, and the information carries second resource information used for synchronizing with the target network element. The session management function network element receives first response information responding to the first synchronous notification information and second response information responding to the second synchronous notification information, and respectively acquires third resource information of the AMF network element and fourth resource information of the target network element according to the first response information and the second response information. The method can obtain the synchronous resource state information more efficiently, effectively reduces the occurrence of the conditions of resource suspension or abnormal service and the like, provides more reliable reference for subsequent resource allocation, and ensures normal execution of the service.

Description

Synchronous resource information acquisition method, communication device and storage medium

Technical Field

The present invention relates to the field of 5G communications, and in particular, to a method for acquiring synchronous resource information, a communication device, and a storage medium.

Background

Along with the improvement of science and technology and living standard of people, people have higher requirements on mobile communication. When the resource states of the user terminal, the wireless access network, the access and mobility management and session management functions in the 5G core network are inconsistent, various problems such as resource suspension, abnormal service and the like can occur. Affecting the normal operation of the network element and the user experience. In the related art, the resource state synchronization between the user terminal and the session management function at the 5G core network side can be realized, but the effect of acquiring the synchronous resource information by the synchronization method is single, and the efficiency is low. Therefore, how to obtain the synchronous resource information more efficiently and effectively between network elements and ensure the normal execution of the service is a technical problem to be solved urgently.

Disclosure of Invention

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a synchronous resource information acquisition method, communication equipment and a storage medium, which can timely and flexibly synchronize resource information among a user terminal, a wireless access network, a session management function and an access or mobility management function network element under the condition that resources are inconsistent, repair the abnormal condition of the resources, ensure normal execution of services and promote the use experience of users.

In a first aspect, an embodiment of the present invention provides a method for acquiring synchronous resource information, which is applied to a network element with a session management function, where the method includes:

sending first synchronization notification information to an access or mobility management function network element, wherein the first synchronization notification information comprises one or more pieces of second synchronization notification information used for being sent to a target network element, the first synchronization notification information carries first resource information used for being synchronized with the access or mobility management function network element, and the second synchronization notification information carries second resource information used for being synchronized with the target network element;

receiving first response information which is returned by the access or mobility management function network element and responds to the first synchronous notification information, wherein the first response information carries third resource information of the access or mobility management function network element;

and receiving second response information which is returned by the access or mobility management function network element and generated by the target network element in response to the second synchronization notification information, wherein the second response information carries fourth resource information of the target network element.

In a second aspect, an embodiment of the present invention further provides a method for acquiring synchronization resource information, where the method is applied to an access or mobility management function network element, and the method includes:

In a third aspect, an embodiment of the present invention further provides a communication device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of acquiring the synchronization resource information of the first aspect as described above or the method of acquiring the synchronization resource information of the second aspect as described above when executing the computer program.

In a fourth aspect, embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions for performing the synchronous resource information acquisition method as described above.

The embodiment of the invention comprises the following steps: the session management function network element sends first synchronization notification information to the access or mobility management function network element, wherein the first synchronization notification information comprises one or more second synchronization notification information used for being sent to the target network element, and the first synchronization notification information carries first resource information used for synchronizing with the access or mobility management function network element. The second synchronization notification information carries second resource information for synchronization with the target network element. The session management function network element and the access or mobility management function network element realize resource information synchronization. The session management function receives first response information which is returned by the access or mobility management function network element and responds to the first synchronous notification information, wherein the first response information carries third resource information of the access or mobility management function network element; and the session management function receives second response information which is returned by the access or mobility management function network element and generated by the target network element in response to the second synchronous notification information, wherein the second response information carries fourth resource information of the target network element. And the session management function network element and the target network element realize resource information synchronization. When the session management function network element obtains the synchronous resource state information from the access or mobility management function network element and the target network element, the access or mobility management function network element and the target network element can also obtain the resource state information from the session management function. The method and the system can obtain the synchronous resource state information more efficiently and effectively, the obtained synchronous resource state can remind a user or a resource state condition in a system network, the user or the system can allocate resources in time conveniently, the occurrence of the conditions of resource death or abnormal business and the like is effectively reduced, more reliable references are provided for subsequent resource allocation, and normal execution of business is guaranteed.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.

Fig. 1 is a schematic diagram of a 5G network architecture in a non-roaming scenario to which the present invention is applicable;

fig. 2 is a schematic diagram of a 5G network architecture in a roaming scenario to which the present invention is applicable;

FIG. 3 is a flowchart illustrating a method for acquiring synchronous resource information according to an embodiment of the present invention;

fig. 4 is a flowchart of a method for acquiring synchronous resource information according to another embodiment of the present invention;

fig. 5 is a flowchart of a method for acquiring synchronous resource information according to another embodiment of the present invention;

fig. 6 is a flowchart of a method for acquiring synchronous resource information according to another embodiment of the present invention;

Fig. 7 is a flowchart of a method for acquiring synchronization resource information according to another embodiment of the present invention;

fig. 8 is a flowchart of a method for acquiring synchronous resource information according to another embodiment of the present invention;

fig. 9 is a flowchart of a method for acquiring synchronization resource information according to another embodiment of the present invention;

fig. 10 is a flowchart of a method for acquiring synchronization resource information according to another embodiment of the present invention;

FIG. 11 is a flowchart of a method for acquiring synchronous resource information according to another embodiment of the present invention;

fig. 12 is a flowchart of a method for acquiring synchronization resource information according to another embodiment of the present invention;

fig. 13 is a flowchart of a method for acquiring synchronization resource information according to another embodiment of the present invention;

fig. 14 is a communication device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The network architecture and the service scenario described in the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not limit the technical solution provided by the embodiments of the present application, and those skilled in the art can understand that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is also applicable to similar technical problems.

The 5G core network adopts a architecture based on service, and a user can request corresponding service as long as an interface is opened. The 5G core network, also called 5GC, separates the control panel and the user plane completely. The legacy Network element is split into multiple functional Networks (NFs). Based on the service architecture, each NF is autonomous independently, and no matter whether it is newly added, upgraded or rebuilt, other NFs can be blocked. The method and the device are applied to a normal 5G communication system, and comprise a non-roaming scene and a roaming scene.

Referring to fig. 1, a schematic diagram of a 5G network architecture based on a service architecture is shown. Fig. 1 is a schematic diagram of a 5G network architecture in a reference point-based non-roaming scenario. The 5G Network architecture shown in fig. 1 may include three parts, namely a terminal device part, a Data Network (DN), and an operator Network part.

Wherein the operator network may also be referred to as a mobile communication network. The mobile communication network described in the embodiments of the present application may specifically be a network meeting the requirements of the third generation partnership project (3rd Generation Partnership Project,3GPP) standard, abbreviated as 3GPP network. Typically, 3GPP networks are operated by operators, including, but not limited to, 5G networks, fourth Generation (4G) networks, and third Generation (3 rd Generation, 3G) networks, etc. In fig. 1 and 2 of the present application, an operator network is exemplified as a 5G network.

Referring to figure 1,5G the operator networks include, but are not limited to: a (radio) Access Network (R) AN, a user plane function (User Plane Function, UPF) Network element, AN Access and mobility management function (Access and Mobility Management Function, AMF) Network element, a session management function (Session Management Function, SMF) Network element, a policy control function (Policy Control Function, PCF) Network element, AN application function (Application Function, AF) Network element, a Network Slice specific identity authentication and authorization function (The Network Slice SelectionFunction, NSSF) Network element, AN authentication server function (Authentication Server Function, AUSF) Network element, a unified data management (Unified Data Management, UDM) Network element, and a Network Slice selected authentication and authorization function (Network Slice-Specific Authentication and Authorization Function, NSSAAF) Network element, and so forth. In the above 5G operator network, the part other than the (radio) access network is called a core network.

The 5G network architecture used in the present application employs a representation based on reference points to represent interactions between network functions. The reference points are a reference point based on a service interface and a reference point based on conventional point-to-point communication. In fig. 1, interfaces such as N1, N2, N3, N4, and N6 have interface serial numbers for interfaces provided by the operator network. The functions of these interfaces and the specific meaning of the interface serial numbers can be referred to the definition and explanation in the 3GPP standard protocol, and will not be described herein. To facilitate an understanding of the present application, some of the communication terms referred to herein are explained below.

A User Equipment (UE) is one type of terminal Equipment. The terminal device may establish a connection with the operator network through an interface (e.g., N1, etc.) provided by the operator network, using services such as data and/or voice provided by the operator network.

It should be noted that, for convenience, the following description will take the user equipment as an example, but the application does not specifically limit the type of the terminal device applied. The terminal device may provide telephony and/or data services and may be a wired or wireless terminal device. The wireless terminal device may be a mobile phone, a computer, a tablet computer, a mobile internet device, etc.

AN Access Network (AN) is a sub-Network of AN operator Network, and is AN implementation system between a service node and a terminal device in the operator Network. The terminal equipment is accessed to the network of the operator, firstly passes through the AN and can be connected with a service node of the network of the operator through the AN. A (radio) Access Network (R) AN is one type of AN apparatus capable of providing a wireless communication function for a terminal apparatus. (R) AN refers to a fixed subscriber accessing the exchange in whole or in part wirelessly. A radio access network is a terrestrial infrastructure, generally consisting of a Network Management System (NMS), a Base Station Controller (BSC), a Base Station (BS), and Subscriber Stations (SS).

It should be noted that the access network device includes, but is not limited to: next generation base stations (gnodeb, gNB), evolved Node bs (enbs), radio network controllers, base station controllers, home base stations, and mobile switching centers in 5G, etc.

A Data Network (DN), which may also be referred to as a packet Data Network (Packet Data Network, PDN), is a Network located outside the carrier Network, where the carrier Network may access multiple DNs, and multiple services may be deployed on the DNs, and may provide services such as Data and/or voice for the terminal device.

The user plane function (User Plane Function, UPF) network element is a gateway provided by the operator and is a gateway for the operator network to communicate with the DN. The UPF network element includes functions related to a user plane such as packet routing and transmission, traffic reporting, quality of service (Quality of Service, qoS) processing, lawful interception, uplink packet detection, downlink packet storage, and the like.

The access and mobility management function (Access and Mobility Management Function, AMF) is a control plane network element provided by the operator network, and is responsible for access control and mobility management of the terminal device accessing the operator network, for example, including mobility state management, allocation of a temporary identity of a user, access authentication, access authorization, and the like.

The session management function (Session Management Function, SMF) network element is responsible for managing the protocol data unit (Protocol Data Unit, PDU) session of the terminal device. The PDU session is a channel for transmitting PDU, and the terminal device and DN communicate PDU with each other through the PDU session to realize communication. The SMF network element is responsible for setting up, maintaining and deleting PDU sessions, and also for managing sessions, such as session set-up, modification and release. In addition, the SMF network element has functions related to session, such as selecting and controlling the UPF network element, configuring traffic direction of the UPF, forwarding session information to a suitable destination network, service and session continuity mode selection, and the like.

The policy control function (Policy Control Function, PCF) network element is a control plane function provided by the operator that supports unified policy management network behavior, which can provide both slice-based policies and mobility related policy rules for AMF network elements, and PDU session policies for SMF network elements. Policies may include charging related policies, qoS related policies, and authorization related policies, among others.

The application function (Application Function, AF) network element refers to various services of the application layer, and may be an application within the operator, such As Volte AF (Volte As like 4G), a video server, a game server, etc. that may also be a third party.

The network slice specific identity verification and authorization function (The Network Slice SelectionFunction, NSSF) network element is capable of selecting a set of network slice instances serving the UE, determining a set of AMF network elements for serving the UE based on the configuration by querying the network warehousing function network element for a list of candidate AMFs.

The authentication server function (Authentication Server Function, AUSF) network element is a control plane network element provided by the operator, typically for authentication between the terminal device (subscriber) and the operator network. After receiving the authentication request initiated by the subscriber, the AUSF network element may authenticate and/or authorize the subscriber, or feed back authentication information and/or authorization information to the subscriber. The AUSF network element supports unified authentication service functions including 3GPP access authentication and non-3 GPP access authentication.

The unified data management (Unified Data Management, UDM) network element is responsible for storing data information of subscribers in the operator network, managing the subscriber service NF registration. The UDM network element can generate 3GPP authentication parameters, can perform access authorization based on subscription data, and can also guarantee continuity of services or sessions.

It should be noted that, the network elements referred to in the embodiments of the present application may also be referred to as functions or functional entities, which are not limited in the present application. For example, the access and mobility management function network element may also be referred to as an access and mobility management function or an access and mobility management function entity, the session management function network element may be referred to as a session management function or a session management function entity, etc. The names of the network elements are not limited in the application, and those skilled in the art can replace the names of the network elements with other names to perform the same function, which falls within the scope of protection of the application.

It will be appreciated that the network elements or functions or functional entities described above may be network elements in hardware devices as well

The present application is not limited in that it may be a software function running on dedicated hardware or a virtualized function instantiated on a platform (e.g., a cloud platform).

Referring to fig. 2, a schematic diagram of another network architecture applicable to the present application is shown in fig. 2, and fig. 2 is a schematic diagram of a network architecture of a 5G system in a roaming scenario. Roaming scenarios may occur when the user moves to an area not supported by the original SMF or across operators, at which time an I/V-SMF may be inserted before the H-SMF. The 5G network architecture in roaming scenario differs from the 5G network architecture in non-roaming scenario in that: an intermediate or visitor session management function (I/V-SMF) network element, denoted home session management function (H-SMF) network element, denoted home policy management function (H-PCF), and a visitor function (V-PCF) network element are added.

Among NFs involved in the 5G network architecture shown in fig. 1 and 2, NFs requiring resource consistency include: UE, (R) AN, AMF network element, SMF network element, wherein the SMF network element may be further divided into I/V-SMF network element and H-SMF network element.

The 3GPP protocol shows that a modification Procedure (modification Procedure) is performed when QOS parameters between the UE and the core network side change. Among other things, the conditions of when to use this procedure for QoS modification and the QoS parameters exchanged between the UE and the network are defined in section TS 23.501 5.7. The situation of triggering this modification procedure is known to be numerous from the signaling flow chart in the 3GPP protocol (not shown in this application). There are five triggers summarized as follows: the first triggering mode is that the UE initiates a PDU session modification process, carries new QoS parameters, and a message filter (Packet Filters); the second triggering mode is that the PCF network element initiates PDU session policy modification process, and informs the SMF network element to trigger PDU session modification through SM Policy Association Modification (SM policy association modification); the third triggering mode is that the UDM network element updates the user session subscription data and informs the SMF through Nudm_SDM_notification; the fourth triggering mode is SMF network element local operation triggering, or SMF discovers AMF fault and modifies a PDU session; the fifth trigger is that the RAN indicates to the SMF that a particular QoS flow resource has been released, and the RAN sends N2 information to the AMF including QFI, user location information, and QoS flow release indication.

Referring to fig. 3, fig. 3 is a flowchart illustrating a method for acquiring synchronization resource information according to an embodiment of the present invention. The method is applied to the session management function network element and comprises the following steps:

step S100, a session management function network element sends first synchronous notification information to an access or mobility management function network element;

the first synchronization notification information comprises one or more pieces of second synchronization notification information for sending to the target network element, wherein the first synchronization notification information carries first resource information for synchronizing with the access or mobility management function network element, and the second synchronization notification information carries second resource information for synchronizing with the target network element.

In this step, the target network element includes a terminal device and an access network element. Specifically, step S100 includes: the session management function network element sends a first synchronization notification message to the access or mobility management function network element. The first synchronization notification information includes second synchronization notification information for sending to the terminal device and second synchronization notification information for sending to the access network element. The first synchronization notification information carries first resource information for synchronization with the access or mobility management function network element. The session management function presets that the second synchronization notification information sent to the terminal device carries second resource information for synchronizing with the terminal device, and the second synchronization notification information preset to be sent to the access network element carries second resource information for synchronizing with the access network element.

Specifically, the first resource information includes resource information such as EPS bearer identity (EPS bearer identity, EBI) of the session management function network element itself; the second resource information includes resource information such as QoS Flow Identifier (QFI) and QoS rule identifier (Qos Rule identity, QRI) of the session management function network element itself. Wherein QoS (Quality of Service) means quality of service, which means that a network can provide better service capability for specified network communication by using various basic technologies, and is a security mechanism of the network, and is a technology for solving the problems of network delay and blocking. Ensuring QoS is important for capacity limited networks, especially for streaming multimedia applications such as VoIP and IPTV, since these applications often require a fixed transmission rate and are also relatively delay sensitive. The QFI can classify and label the packet data packet of each QoS flow, and can provide reliable decision advice for subsequent resource allocation.

EBI, QFI, QRI and the like are resources at QoS flow level. It is understood that resources at QoS flow level include, but are not limited to, resource information such as EBI, QFI, QRI mentioned in this application. The QoS flow level resources further include: qoS class identification (QoS Class Identifier, QCI), guaranteed bit rate (GuaranteedBitRate, GBR), and maximum bit rate (MaximumBitRate, MBR), among others. The first resource information and the second resource information may include other QoS class resource information, such as QoS class identification, maximum bit rate, etc., according to different requirements of resource allocation in different application networks, in addition to resource information such as EBI, QFI, QRI of the session management function network element. In addition to QoS flow level resource information, the first resource information and the second resource information may also include session level resource information including, but not limited to: a PDU session identifier (PDU session ID) and a PDU session type (PDU Session Types), and so on. Therefore, the type and the number of the resource information included in the first resource information and the second resource information are not particularly limited, so long as the resource information can describe the resource information of the session management function network element and can be used for synchronizing with the access or mobility management function network element and the target network element.

Step S110, the second synchronous notification information is sent to the target network element by the access or mobility management function network element, and the second synchronous notification information carries the first resource information.

In step S120, the session management function network element receives first response information returned by the access or mobility management function network element in response to the first synchronization notification information, where the first response information carries third resource information of the access or mobility management function network element.

Specifically, the third resource information includes resource information such as EBI of the access or mobility management function network element itself. It is understood that the third resource information includes, but is not limited to, EBI, which may also include other QoS level resource information, or session level resource information. Therefore, the type and the number of the resource information included in the third resource message are not particularly limited, so long as the third resource message can characterize the resource information of the access or mobility management function network element and can be used for synchronizing with the session management function network element.

Step S130 to step S140, the session management function network element receives second response information which is returned by the access or mobility management function network element and generated by the target network element in response to the second synchronous notification information, wherein the second response information carries fourth resource information of the target network element.

Further, the target network element comprises a terminal device and an access network element. The steps S130 to S140 specifically include: the session management function network element receives second response information which is returned by the access or mobility management function network element and is generated by the terminal equipment in response to the second synchronous notification information, wherein the second response information carries fourth resource information of the terminal equipment. The session management function network element receives second response information which is returned by the access network element or the mobility management function network element and generated by the access network element in response to the second synchronous notification information, wherein the second response information carries fourth resource information of the access network element.

Specifically, the fourth resource information includes resource information such as EBI of the target network element itself. It is understood that the fourth resource information includes, but is not limited to, QFI and QRI resource information, it may also include resource information of other QoS levels, or resource information of session levels. Therefore, the type and the number of the resource information included in the third resource message are not particularly limited, so long as the third resource message can represent the resource information of the target network element and can be used for synchronizing with the session management function network element. The resource information of the QoS level is finer than the resource information of the session level, and the first resource information, the second resource information, the third resource information and the fourth resource information comprise the resource information of the QoS level, so that the resources in the communication network can be allocated more accurately and rapidly, and when the resources are suspended, the resources can be adjusted in time to restore normal service.

With reference to fig. 4, a specific example will be described in which a terminal device is UE and AN access network element is (R) AN. Fig. 4 is a flow chart of a method for acquiring synchronous resource information according to an embodiment of the present invention, where the flow of the method is initiated by a session management function network element and is applied to a 5G network architecture in a non-roaming scenario as shown in fig. 1. The following is a specific example with reference to fig. 4:

step S201: the session management function network element actively transmits the resource state synchronization notification information to the AMF, wherein the resource state synchronization notification information comprises N1 resource state synchronization notification information carried to the UE and N2 resource state synchronization notification information carried to the (R) AN.

In this step, the resource status synchronization notification information is the first synchronization notification information. The first synchronization notification information includes N1 resource status synchronization notification information for transmission to the UE and N2 resource status synchronization notification information for transmission to the (R) AN, wherein the resource status synchronization notification information carries first resource information for synchronization with AN access or mobility management function network element, the N1 resource status synchronization notification information carries second resource information for synchronization with the UE, and the N2 resource status synchronization notification information carries second resource information for synchronization with the (R) AN.

Step S202, the AMF network element returns a resource state synchronization notification response message to the session management function network element, wherein the response message carries the third resource information of the AMF itself.

In this step, the session management function network element receives the resource status synchronization notification response information returned by the access or mobility management function network element, where the resource status synchronization notification response information carries the third resource information of the AMF itself. The session management function network element can acquire third resource information according to the resource status synchronization notification response information for synchronizing with the resource information between the SMF

Step S203, AMF sends N2 Message to (R) AN. Specifically, the N2 Message includes N2 resource status synchronization notification information and N1 resource status synchronization notification information to the UE.

Step S204: (R) the AN transparently transmits the N1 resource status synchronization notification information to the UE through the AN-specific transmission resource modification information to the UE.

Step S205: (R) AN returns N2 Message to AMF. Specifically, the N2 Message includes N2 resource status synchronization notification response information, where the N2 Message carries fourth resource information of the (R) AN itself, which is used for synchronization with a session management function network element.

Step S206: AMF sends the resource state synchronization notification information to SMF, and the resource state synchronization notification information is used as a carrier of N2 resource state synchronization notification response information and carries N2 resource state synchronization notification response information sent by (R) AN.

Step S207: the SMF responds to the resource state synchronization notification response information to the AMF, and the SMF confirms that the resource state synchronization notification information sent by the AMF is received.

Step S208: and the UE returns N1 resource state synchronization notification response information to the RAN, wherein the response information carries fourth resource information of the UE.

The AMF receives N1 resource state synchronization notification response information returned by the UE, and forwards the response information to the SMF. And the SMF acquires fourth resource information of the UE according to the N1 resource state synchronous notification response information.

Step S209: the RAN transmits the N2 NAS information upstream to the AMF. This step is to transparently transmit the N1 resource status synchronization notification response information returned by the UE to the AMF.

Step S210: the AMF sends resource state synchronization notification information to the SMF, wherein the resource state synchronization notification information is used as a carrier of N1 resource state synchronization notification response information and carries N1 resource state synchronization notification response information sent by the UE.

Step S211: the SMF returns a resource status synchronization notification response message to the AMF to confirm receipt of the resource status synchronization notification message.

It should be noted that, all the information related to the method flowchart shown in fig. 4, such as the resource status synchronization notification information, the resource status synchronization notification response information, and the like, are all the information newly proposed by the user in the application.

Referring to fig. 5, a flowchart of a method for acquiring synchronization resource information according to another embodiment of the present invention is shown. Mention is made in 3GPP protocols: the PCF network element may initiate a PDU session policy modification procedure informing the SMF network element to trigger PDU session modification by session management policy association modification (SM Policy Association Modification). That is, means that, in step S100: before sending the first synchronization notification information to the access or mobility management function network element, the method may further include the following steps:

step S300: the session management function network element receives policy update information sent from the policy control function.

Step S310: the session management function network element generates first synchronous notification information according to the policy update information.

A specific example will be described below with reference to fig. 6, in which a terminal device is UE and AN access network element is (R) AN. Fig. 6 is a flow chart of a method for acquiring synchronous resource information according to another embodiment of the present invention, where the flow of the method is triggered by a PCF network element and actually initiated by a session management function network element, and is applied to a 5G network architecture in a non-roaming scenario as shown in fig. 1. The following is a specific example with reference to fig. 6:

step S401 to step S402: the PCF actively sends the Npmf context policy control update notification request information to the SMF, the SMF is notified to perform policy update, and the SMF returns the Npmf context policy control update notification response information to the PCF.

Step S403: the SMF sends Namf alternating N1N2 message conversion request information to the AMF, wherein the Namf alternating N1N2 message conversion request information comprises PDU session modification command information carried to the UE and a PDU session resource modification request carried to the (R) AN.

In this step, namf exchanges N1N2 message conversion request information as first synchronization notification information, where the first synchronization notification information includes PDU session modification command information for transmitting to the UE and PDU session resource modification request information for transmitting to the (R) AN, the Namf exchanges N1N2 message conversion request information carrying first resource information for synchronizing with the access or mobility management function network element, the PDU session modification command information carrying second resource information for synchronizing with the UE, and the PDU session resource modification request information carrying second resource information for synchronizing with the (R) AN.

Specifically, in this step, a field needs to be added to the Namf communication N1N2 message conversion request information, so that the Namf communication N1N2 message conversion request information carries the first resource information of the SMF network element itself, and is used for synchronization with the AMF.

Specifically, the PDU session modification command information is referred to as PDU session modification request information. In this step, a field needs to be added to the PDU session modification request information, so that the field carries second resource information of the SMF network element itself, and is used for synchronization with the UE.

Specifically, the PDU session resource modification request information is referred to as PDU session resource modification request information. In this step, a field needs to be added to the PDU session resource modification request information, so that the field carries second resource information of the SMF network element itself, and is used for synchronization with the (R) AN.

Step S404: AMF sends Namf alternating N1N2 message conversion response information to SMF.

The field needs to be added in Namf exchange N1N2 message conversion response information, so that the field carries third resource information of an AMF network element, and the third resource information is used for synchronizing with the SMF. The third resource information includes resource information such as EBI of the AMF itself.

Step S405: the AMF transmits AN N2 Message to the (R) AN, and in particular, the N2 Message includes PDU session resource modification request information including PDU session modification command information to the UE.

Step S406: (R) the AN interacts with the UE through AN-specific transmission resource modification information, which carries PDU session modification command information to the UE.

Step S407: the (R) AN returns AN N2 Message to the AMF, wherein the N2 Message comprises PDU session resource modification response information.

In this step, a field needs to be added to the PDU session resource modification response information to carry the fourth resource information of the (R) AN itself for synchronization with the SMF network element. The fourth resource information includes resource information such as (R) AN itself QFI.

Step S408 to step S409: the AMF network element sends AN Nsmf PDU session update context request to the SMF network element, wherein the session update context request carries response information of the (R) AN. The SMF returns an Nsmf PDU session update context response to the AMF.

Step S410 to step S411: the SMF informs the UPF of updating through the N4 session modification request information, and the UPF returns N4 session modification response information to the SMF.

Step S412 to step S413: the UE sends PDU session modification completion information to the (R) AN, and the RAN transparently transmits the PDU session modification completion information to the AMF through N2 NAS uplink transmission.

In this step, a field needs to be added to the PDU session modification completion information to carry the fourth resource information of the UE itself for synchronization with the SMF. The fourth resource information includes resource information such as QFI and QRI of the UE itself.

Step S414 to step S415: the AMF sends Nsmf PDU session update context request information to the SMF, wherein the request information carries PDU session modification completion information sent by the UE. The SMF returns an Nsmf PDU session update context response to the AMF. In this step, the SMF network element obtains fourth resource information of the UE according to the received PDU session modification completion information.

Step S416 to step S417: the SMF informs the UPF of updating through the N4 session modification request information, and the UPF returns N4 session modification response information to the SMF.

The embodiment shown in fig. 6 is based on the existing information flow, and performs field adding processing on some information in the information, so that the information carries the needed resource status information. Based on the existing information flow transfer, the resource state information of the other party can be obtained from the SMF network element to the AMF network element and from the SMF network element to the target network element.

Referring to fig. 7, fig. 7 is a flowchart illustrating a method for acquiring synchronization resource information according to another embodiment of the present invention. Mention is made in 3GPP protocols: the terminal device, or specifically the UE, may actively initiate a PDU session modification procedure, carrying new QoS parameters and a Packet Filters (Packet Filters). Namely, in step S100: before sending the first synchronization notification information to the access or mobility management function network element, the method may further include the following steps:

step S500: the session management function network element receives the Nsmf PDU session update context request information sent by the access or mobility management function network element, which carries the packet data unit session modification request sent by the terminal device.

Step S510: the session management function network element generates first synchronization notification information according to the session update context request information of the Nsmf PDU.

A specific example will be described below with reference to fig. 8, in which a terminal device is UE and AN access network element is (R) AN. Fig. 8 is a flow chart of a method for acquiring synchronization resource information according to another embodiment of the present invention, where the flow chart of the method is actively initiated by a UE and is applied to a 5G network architecture in a non-roaming scenario as shown in fig. 1. The following is a specific example with reference to fig. 8:

step S600: the UE initiatively initiates updating and brings the updating request information to the AMF network element through PDU session resource modification.

Step S610: the AMF sends Nsmf PDU session update context request information to the SMF, which carries the request information of the UE.

Step S620: the SMF network element interacts with the PCF network element by initiating session management policy association modification information.

Step S630: the SMF returns an Nsmf PDU session update context response to the AMF, with the PDU session modification command information carried to the UE.

In this step, the first synchronization notification information is Nsmf PDU session update context response information, where the first synchronization notification information includes PDU session modification command information for sending to the UE, and meanwhile, the first synchronization notification information further carries first resource information for synchronizing with the access or mobility management function network element, and the PDU session modification command information carries second resource information for synchronizing with the UE.

In this step, a field needs to be added to the Nsmf PDU session update context response information, so that the field carries the first resource information of the SMF network element, and is used for synchronization with the AMF.

In this step, a field needs to be added to the PDU session modification command information, so that the field carries the second resource information of the SMF itself and is used for synchronization with the UE.

Step S640: the AMF transmits PDU session modification command information to inform the UE.

Step S650: the UE transmits PDU session modification complete information to the AMF. In this step, a field needs to be added to the PDU session modification completion information, which carries the resource information of the UE itself, such as QFI, QRI, etc., for synchronization with the SMF.

Step S660 to step S670: the AMF sends Nsmf PDU session update context request information to the SMF, wherein the SMF carries modification completion information of the UE. In this step, a field needs to be added to the Nsmf PDU session update context request information, so that the field carries the third resource information of the AMF and is used for synchronization with the SMF.

Step S680 to step S690: the SMF informs the UPF of updating through the N4 session modification request information, and the UPF returns N4 session modification response information to the SMF.

The embodiment shown in fig. 8 performs field adding processing on some information based on the existing information flow in the non-roaming scenario, so that the information carries the needed resource status information. Based on the existing information flow transfer, the resource state information of the other party can be obtained from the SMF network element to the AMF network element and from the SMF network element to the UE. The obtained resource state information can provide a reliable reference for subsequent resource allocation, and ensure normal execution of the service.

It should be noted that, the embodiments shown in fig. 6 and fig. 8 are based on the existing information flow, and perform the field adding process on some information in the information, so that the information carries the needed resource status information. Based on the existing information flow transfer, the resource state information of the other party can be obtained from the SMF network element to the AMF network element and from the SMF network element to the target network element. The specific definitions, functions and definitions of the information related to the existing information flow in the present embodiment are not specifically described in the present application, and may be known according to the relevant content in the 3GPP protocol. That is, the present application does not describe information such as Namf exchange N1N2 message conversion request information, nsmf PDU session update context response information, etc. in the specific embodiment.

Referring to fig. 9, fig. 9 is a flowchart illustrating a method for acquiring synchronization resource information according to an embodiment of the present invention. In a 5G network architecture in a non-roaming scenario, the session management function network elements include H-SMF network elements and I/V-SMF network elements. In step S100: before sending the first synchronization notification information to the access or mobility management function network element, the method may further include the following steps:

Step S700: the H-SMF network element sends third synchronization notification information to the I/V-SMF network element, wherein the third synchronization notification information carries fifth resource information for synchronizing with the I/V-SMF network element.

The fifth resource information in this step is resource information such as EBI, QFI, QRI of the H-SMF network element itself. It is understood that the fifth resource information may also include resource information of a session level and resource information of other QoS levels.

Step S710: the I/V-SMF network element generates first synchronous notification information according to the fifth resource information.

A specific example will be described below with reference to fig. 10, in which a terminal device is UE and AN access network element is (R) AN. Fig. 10 is a flowchart of a method for acquiring synchronization resource information according to another embodiment of the present invention. The flow of the method is actively initiated by the H-SMF network element and is applied to a 5G network architecture in a roaming scene as shown in figure 2. The following is a specific example with reference to fig. 10:

step S801: the H-SMF actively transmits N16 resource state synchronization notification information to the I/V-SMF, wherein the information carries resource information such as H-SMF itself EBI, QFI, QRI and the like and is used for synchronizing with the I/V-SMF.

In this step, the N16 resource status synchronization notification information is third synchronization notification information. The third synchronization notification information includes fifth resource information of the H-SMF network element itself, for synchronization with the I/V-SMF. The fifth resource information includes, but is not limited to, resource information such as H-SMF itself EBI, QFI, QRI.

Step S802: the I/V-SMF sends N16 resource state synchronization notification response information to the H-SMF, and the response information carries resource information such as I/V-SMF itself EBI, QFI, QRI and the like and is used for synchronizing with the H-SMF.

In this step, the N16 resource status synchronization notification response information sent by the I/V-SMF to the H-SMF corresponds to third response information in response to the third synchronization notification information. The third response information carries the first resource information of the I/V-SMF itself and is used for synchronizing with the H_SMF. By the end of this step, the I/V-SMF and H-SMF are synchronized with each other.

Step S803: the I/V-SMF sends resource status synchronization notification information to the AMF, wherein the resource status synchronization notification information comprises N1 resource status synchronization notification information carried to the UE and N2 resource status synchronization notification information carried to the (R) AN.

In this step, the resource status synchronization notification information sent by the I/V-SMF is the first synchronization notification information. The N1 resource status synchronization notification information to the UE and the N2 resource status synchronization notification information to the (R) AN are the second synchronization notification information. The first synchronization notification information of claim 10 includes one or more second synchronization notification information for transmission to the target network element. Wherein the first synchronization notification information further comprises first resource information of an H-SMF network element for synchronization with the access or mobility management function network element; the second synchronization notification information carries second resource information of the H-SMF network element for synchronization with the UE, (R) AN.

Step S04: the AMF returns resource state synchronization notification response information, wherein the response information carries the resource information such as the EBI of the AMF itself and is used for synchronizing with the H-SMF.

In this step, the AMF returns the resource status synchronization notification response information, i.e., the first response information. The first response information carries third resource information of the AMF and is used for synchronizing with the H-SMF. By this step, the H-SMF and the AMF have mutually obtained the resource information of each other.

Step S805: the AMF sends AN N2 Message to the (R) AN, which includes N2 resource status synchronization notification information and N1 resource status synchronization notification information to the UE.

Step S806: (R) the AN transparently transmits the N1 resource status synchronization notification information to the UE through the AN-specific transmission resource modification information.

Step S807: the (R) AN returns N2 resource state synchronization notification response information to the AMF, and carries the resource information such as QFI of the (R) AN and the like, and is used for synchronizing with the H-SMF.

In this step, the N2 resource status synchronization notification response information is second response information, where the second synchronization notification information carries fourth resource information of the (R) AN itself, and the fourth resource information includes, but is not limited to, resource information such as QFI of the (R) AN itself.

Step S808: AMF sends resource status synchronization notification information to I/V-SMF, and carries N2 resource status synchronization notification response information sent by (R) AN.

In this step, the N2 resource status synchronization notification response information is second response information returned by the (R) AN, where the second response information includes fourth resource information carrying the (R) AN itself. And the resource state synchronization notification information sent by the AMF is used as a carrier of the second response information, and the second response information is returned to the I/V-SMF.

Step S809: the I/V-SMF synchronously informs the AMF of response information in response to the resource state.

Step S810 to step S811: and the UE returns N1 resource state synchronization notification response information, and the information returned by the UE is transparently transmitted to the AMF through N2NAS uplink transmission of the (R) AN.

In this step, the N1 resource status synchronization notification response information is second response information returned by the UE, where the second response information includes fourth resource information of the UE itself.

Step S812: AMF sends the resource status synchronization notification information to I/V-SMF, and carries the N1 resource status synchronization notification response information sent by UE.

In this step, the AMF provides a resource status synchronization notification message as an information carrier, and sends the second response message returned by the UE to the I/V-SMF. And the I/V-SMF obtains fourth resource information of the UE according to the second response information.

Step S813: the I/V-SMF synchronously informs the AMF of response information in response to the resource state.

Step S814: the I/V-SMF sends N16 resource status synchronization notification information to the H-SMF. The method carries the resource information of EBI, QFI, QRI and the like of the I/V-SMF, the resource information of QFI, QRI and the like of the UE received before and the resource information of QFI and the like of the AN (R) received before, and is used for synchronizing with the H-SMF.

In this step, the I/V-SMF provides AN N16 resource status synchronization notification information as AN information carrier for carrying resource information, where the information includes resource information such as EBI, QFI, QRI of the I/V-SMF itself, the fourth resource information of the UE received in the previous step, and the fourth resource information of the (R) AN. The H-SMF may obtain the synchronization resource information of the I/V-SMF, the UE and the (R) AN according to the information carrier.

Step S815: the H-SMF sends N16 resource status synchronization notification response information to the I/V-SMF.

Mention is made in 3GPP protocols: the PCF network element may initiate a PDU session policy modification procedure informing the SMF network element to trigger PDU session modification. Namely, in step S800a: the H-SMF actively sends N16 resource state synchronization notification information to the I/V-SMF, and carries the H-SMF itself EBI, QFI, QRI and other resource information. The method can also comprise the following steps: firstly, the H-SMF network element receives the strategy updating information sent by the strategy control function, and then the H-SMF network element generates third synchronous notification information according to the strategy updating information.

A specific example will be described below with reference to fig. 11, in which a terminal device is UE and AN access network element is (R) AN. Fig. 11 is a flow chart of a method for acquiring synchronous resource information according to another embodiment of the present invention, where the flow of the method is triggered by a PCF network element and actually initiated by an H-SMF network element, and is applied to a 5G network architecture in a roaming scenario as shown in fig. 2. The following is a specific example with reference to fig. 11:

steps S901 to 902: the PCF actively transmits the Npmf context policy control update notification request information to the H-SMF, and the H-SMF returns the Npmf context policy control update notification response information to the PCF.

Step S903: the H-SMF sends Nsmf PDU session update request information to the I/V-SMF.

In this step, the Nsmf PDU session update request information transmitted from the H-SMF to the I/V-SMF corresponds to the third synchronization notification information. A field needs to be added to the third synchronization notification information to carry the fifth resource information of the H-SMF itself for synchronization with the I/V-SMF.

Step S904: the I/V-SMF sends Namf alternating N1N2 message conversion request information to the AMF, wherein the Namf alternating N1N2 message conversion request information comprises PDU session modification command information carried to the UE and PDU session resource modification request information carried to the (R) AN.

In this step, the Namf exchange N1N2 message conversion request information sent by the I/V-SMF to the AMF corresponds to first synchronization notification information, and a field is added to the first synchronization notification information to make the first synchronization notification information carry first resource information of the H-SMF, so that the first synchronization notification information is used for synchronization with the AMF.

The first synchronization notification information includes PDU session modification command information carried to the UE and a PDU session resource modification request carried to the (R) AN, both of which are the second synchronization notification information. A field is added to the second synchronization notification information to the UE so that the second synchronization notification information carries the fifth resource information of the H-SMF for synchronization with the UE. In addition, a field needs to be added to the second synchronization notification information to the (R) AN, so that the second synchronization notification information carries the second resource information of the H-SMF, and is used for synchronization with the (R) AN.

Step S905: the AMF sends Nsmf PDU session update response information to the I/V-SMF.

In this step, the session update response information of the Nsmf PDU sent by the AMF to the I/V-SMF corresponds to the first response information, and a field needs to be added to the first response information, so that the first response information carries the third resource information of the AMF itself, and is used for synchronization with the H-SMF.

Step S906: the AMF sends AN N2 Message to the (R) AN. The N2 Message includes PDU session resource modification request information and also includes PDU session modification command information to the UE.

This step corresponds to the AMF sending the second synchronization notification information to the RAN, where the second synchronization notification information sent to the RAN further includes the second synchronization notification information to the UE. It is understood that the second synchronization notification information sent to the RAN is not identical to the second synchronization notification information sent to the UE. For convenience, the synchronization notification information of the network element other than the AMF or HMF as the transmission object is referred to as second synchronization notification information.

Step S907: (R) the AN interacts with the UE through AN-specific transmission resource modification information, wherein PDU session modification command information is carried to the UE.

In this step, the UE receives the second synchronization notification information and obtains second resource information of the H-SMF.

Step S908: (R) AN returns N2 Message to AMF. The N2 Message includes PDU session resource modification response information.

In this step, the PDU session resource modification response information returned from the (R) AN to the AMF corresponds to the second response information in response to the second synchronization notification information. A field needs to be added to the second response information to carry the fourth resource information of the (R) AN itself for synchronization with the H-SMF.

Step S909 to step S910: the AMF sends Nsmf PDU session update context request information to the I/V-SMF, wherein the session update context request information carries second synchronous notification response information returned by the (R) AN. The I/V-SMF returns an NSmf PDU session update context response message to the AMF. In this step, the AMF plays a role in forwarding information.

Steps S911 to 912: the SMF informs the I/V-UPF (intermediate or visited user plane function) to update through the N4 session modification request information, and the I/V-UPF returns N4 session modification response information.

Steps S913 to 914: the UE transmits PDU session modification completion information to the AMF through the uplink transmission of the (R) AN.

In this step, the PDU session modification completion information transmitted by the UE corresponds to second response information in response to the second synchronization notification information. A field needs to be added in the second response information to enable the second response information to carry fourth resource information of the UE itself for synchronization with the H-SMF.

Steps S915 to 916: the AMF sends Nsmf PDU session update context request information to the I/V-SMF, wherein the request information carries modification completion information of the UE. The I/V-SMF returns an Nsmf PDU session update context response message to the AMF.

Step S917: the I/V-SMF transmits Nsmf PDU session update response information to the H-SMF.

In this step, the I/V-SMF sends to the H-SMF, the Nsmf PDU session update response information corresponds to third response information in response to the third synchronization notification information, and a field needs to be added to the third response information to make the third response information carry the first resource information of the I/V-SMF itself, and the resource information of the UE, such as QFI, QRI, and the like, received in the previous step, and the resource information of the QFI of the (R) AN, such as QFI, received in the previous step, respectively, for synchronization with the H-SMF. The first resource information includes resource information such as EBI, QFI, QRI.

Steps S918 to 919: the H-SMF informs the H-UPF of updating through the N4 session modification request information, and the H-UPF returns N4 session modification response information to the H-SMF.

Mention is made in 3GPP protocols: the terminal device, or specifically the UE, may actively initiate a PDU session modification procedure, carrying new QoS parameters and a Packet Filters (Packet Filters). Namely, in step S800a: before the H-SMF actively sends the N16 resource state synchronization notification information to the I/V-SMF and carries the resource information such as H-SMF itself EBI, QFI, QRI, the method can further comprise the following steps: firstly, an I/V-SMF network element receives Nsmf PDU session update context request information sent by an access or mobility management function network element, wherein the information carries a packet data unit session modification request sent by terminal equipment; and then, the I/V-SMF network element generates first synchronous notification information according to the NSmf PDU session updating context request information.

A specific example will be described below with reference to fig. 12, in which a terminal device is UE and AN access network element is (R) AN. Fig. 12 is a flowchart of a method for acquiring synchronization resource information according to another embodiment of the present invention, where the method is actively initiated by a UE and is applied to a 5G network architecture in a roaming scenario as shown in fig. 2. The following is a specific example with reference to fig. 12:

step S1001: the UE actively initiates updating and modifies request information to be brought to the AMF through PDU session.

Step S1002: the AMF sends Nsmf PDU session update context request information to the I/V-SMF (middle or visited SMF), which carries the UE's request information.

Step S1003: the I/V-SMF sends Nsmf PDU session update request information to the H-SMF (home SMF).

Step S1004: the H-SMF returns Nsmf PDU session update response information to the I/V-SMF.

Step S1005: the H-SMF initiates interaction of session management policy association modification information with the PCF.

Step S1006: the H-SMF sends Nsmf PDU session update request information to the I/V-SMF.

In this step, the Nsmf PDU session update request information is third synchronization notification information sent by the H-SMF, and a field needs to be added to the third synchronization notification information to carry fifth resource information of the H-SMF itself for synchronization with the I/V-SMF.

Step S1007: the I/V-SMF returns to the AMF an Nsmf PDU session update context response message, wherein the PDU session modification command message is carried to the UE.

In this step, the Nsmf PDU session update context response information corresponds to the first synchronization notification information sent by the I/V-SMF, and the PDU session modification command information to the UE corresponds to the second synchronization notification information. A field needs to be added to the first synchronization notification information to enable the first synchronization notification information to carry resource information such as an H-SMF itself EBI and the like for synchronization with an AMF. Meanwhile, fields are added in the second synchronization notification information to enable the second synchronization notification information to carry resource information such as QFI and QRI of the H-SMF and the like, and the second synchronization notification information is used for synchronizing with the UE.

Step S1008: the AMF transmits PDU session modification command information to inform the UE. The AMF functions to forward the second synchronization notification information.

Step S1009: the UE transmits PDU session modification complete information to the AMF.

In this step, the PDU session modification completion information is second response information returned by the UE in response to the second synchronization notification information in step S1007. A field needs to be added in the second response information, so that the second response information carries resource information such as QFI, QRI and the like of the UE itself and is used for synchronizing with H-SMF.

Steps S1010 to 1011: the AMF sends Nsmf PDU session update context request information to the SMF, wherein the session modification completion information of the UE is carried.

In this step, the Nsmf PDU session update context request information corresponds to third response information, which is responsive to the first synchronization notification information. A field needs to be added to the first response information, so that the first response information carries resource information such as EBI of the AMF itself, and is used for synchronization with the H-SMF.

Step S1012: the I/V-SMF transmits Nsmf PDU session update response information to the H-SMF.

In this step, the session update response information of the Nsmf PDU corresponds to the third response information returned by the I/V-SMF. The third response information needs to be added with fields to respectively carry the resource information of EBI, QFI, QRI and the like of the I/V-SMF and the resource information of QFI, QRI and the like of the UE received before, so as to be used for synchronizing with the H-SMF. To this end, resource information of the other party is obtained between the H-SMF and the I/V-SMF, between the H-SMF and the UE, and between the H-SMF and the UE.

Step S1013 to step S1014: the H-SMF informs the H-UPF of updating through the N4 session modification request information, and the H-UPF returns N4 session modification response information to the H-SMF.

In the embodiment of the application, how the synchronous resource information acquisition method realizes the resource information synchronization between the session management function network element and the access or accessibility management function network element and between the session management function network element and the target network element under three triggering modes of the PDU session modification triggering and modifying process initiated by the UE, the SMF network element initiated by the PCF network element initiated by the SMF network element initiated by the PCF network element and the local triggering of the SMF network element is explained. It can be understood that the method for acquiring the synchronous resource information in the application can also be applied to two triggering cases of triggering the SMF to initiate the session modification by the UDM and indicating the SMF network element to initiate the session modification by the RAN.

The embodiment shown in fig. 12 is based on the existing information flow, and performs field adding processing on some information in the information, so that the information carries the needed resource status information. Based on the existing information flow transfer, the resource state information of the other party can be obtained from each other between the H-SMF and the I/V-SMF, from the H-SMF and the UE, and from the H-SMF and the UE. The obtained resource state information can provide a reliable reference for subsequent resource allocation, and ensure normal execution of the service.

It should be noted that, the embodiments shown in fig. 11 and fig. 12 are based on the existing information flow, and perform the field adding process on some of the information, so that the information carries the required resource status information. Based on the existing information flow transfer, the resource state information of the other party can be obtained from each other between the H-SMF network element and the AMF network element, from the H-SMF network element and the I/V-SMF network element, from the H-SMF network element and the target network element, and from the I/V-SMF network element and the target network element. The specific definitions, functions and definitions of the existing information related to the existing information flow in the present embodiment are not specifically described in the present application, and may be known according to the relevant content in the 3GPP protocol. That is, in the present application, detailed description is omitted for information such as Nsmf PDU session update request information and Nsmf PDU session update context response in a specific embodiment.

Referring to fig. 13, a method for acquiring synchronization resource information according to another embodiment of the present invention, where the method is applied to an access or mobility management function network element, includes:

step S1100: receiving first synchronous notification information sent by a session management function network element;

in the step, the first synchronization notification information includes one or more second synchronization notification information for sending to the target network element, where the first synchronization notification information carries first resource information for synchronizing with the access or mobility management function network element, and the second synchronization notification information carries second resource information for synchronizing with the target network element;

Step S1110: sending first response information to the session management function network element according to the first synchronous notification information, wherein the first response information carries third resource information for synchronizing with the session management function network element;

step S1120: sending second synchronous notification information to a target network element according to the first synchronous notification information;

step S1130: receiving second response information generated by the target network element according to the second synchronous notification information, wherein the second response information carries fourth resource information of the target network element;

step S1140: and sending the second response information to the session management function network element.

Fig. 14 is a schematic diagram of a communication device 1400 according to an embodiment of the present invention. As shown in fig. 14, the communication device 1400 includes, but is not limited to:

a memory 1420 for storing a program; the processor 1410 is configured to execute a program stored in the memory 1420, and when the processor 1410 executes the program stored in the memory 1420, the processor 1410 is configured to execute the above-described synchronization resource information acquisition method. The processor 41 and the memory 1420 may be connected by a bus or other means.

The memory 1420 is used as a non-transitory computer readable storage medium for storing a non-transitory software program and a non-transitory computer executable program, such as the synchronous resource information acquisition method described in the embodiments of the present invention. The processor 1410 implements the above-described synchronous resource information acquisition method by running a non-transitory software program and instructions stored in the memory 1420.

Memory 1420 may include a storage program area that may store an operating system, at least one application program required for functionality, and a storage data area; the storage data area may store and execute the synchronous resource information acquisition method described above. In addition, memory 1420 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some implementations, memory 1420 may optionally include memory located remotely from processor 1410, which may be connected to processor 1410 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The non-transitory software programs and instructions required to implement the above-described synchronization resource information acquisition method are stored in the memory 1420, and when executed by the one or more processors 1410, the above-described synchronization resource information acquisition method is performed, for example, steps S100 to S140 in fig. 3, steps S201 to S211 in fig. 4, steps S300 to S310 in fig. 5, steps S401 to S417 in fig. 6, steps S500 to S510 in fig. 7, steps S600 to S690 in fig. 8, steps S700 to S710 in fig. 9, steps S801 to S815 in fig. 10, steps S901 to S919 in fig. 11, steps S1001 to S1014 in fig. 12, and steps S1100 to S1140 in fig. 13. The embodiment of the invention also provides a storage medium which stores computer executable instructions for executing the synchronous resource information acquisition method.

In an embodiment, the storage medium stores computer executable instructions that are executed by the one or more control processors 1410, for example, by the one processor 1410 in the communication device 1400, and can cause the one or more processors 1410 to perform the above-described synchronization resource information acquisition method, for example, performing the method steps S100 to S140 in fig. 3, the method steps S201 to S211 in fig. 4, the steps S300 to S310 in fig. 5, the steps S401 to S417 in fig. 6, the steps S500 to S510 in fig. 7, the steps S600 to S690 in fig. 8, the steps S700 to S710 in fig. 9, the steps S801 to S815 in fig. 10, the steps S901 to S919 in fig. 11, the steps S1001 to S1014 in fig. 12, and the steps S1100 to S1140 in fig. 13.

By adopting the synchronous resource information acquisition method provided by the application, the synchronous resource state information can be acquired more efficiently and effectively. The obtained synchronous resource state information is richer, and not only comprises the resource information with QoS level, but also comprises the resource information with session level. The abundant synchronous resource state information can more accurately display the resource condition in the network. The obtained synchronous resource state can remind the user or the resource state condition in the system network, so that the user or the system can allocate the resources in time, the occurrence of the conditions of resource suspension or abnormal business and the like can be effectively reduced, more reliable reference is provided for subsequent resource allocation, and normal execution of the business is ensured.

The embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and may include any information delivery media.

Claims

1. A method for acquiring synchronous resource information, which is applied to a session management function network element, the method comprising:

2. The method for acquiring the synchronization resource information according to claim 1, wherein the target network element includes a terminal device and an access network element, the first synchronization notification information is sent to an access or mobility management function network element, the first synchronization notification information includes one or more second synchronization notification information for sending to the target network element, wherein the first synchronization notification information carries first resource information for synchronization with the access or mobility management function network element, and the second synchronization notification information carries second resource information for synchronization with the target network element, and the method includes:

Sending first synchronization notification information to an access or mobility management function network element, wherein the first synchronization notification information comprises second synchronization notification information used for being sent to the terminal equipment and second synchronization notification information used for being sent to the access network element, the first synchronization notification information carries first resource information used for being synchronized with the access or mobility management function network element, the second synchronization notification information of the terminal equipment carries second resource information used for being synchronized with the terminal equipment, and the second synchronization notification information of the access network element carries second resource information used for being synchronized with the access network element.

3. The method according to claim 2, wherein the receiving second response information returned by the access or mobility management function network element and generated by the target network element in response to the second synchronization notification information, the second response information carrying fourth resource information of the target network element, includes:

receiving second response information which is returned by the access or mobility management function network element and generated by the terminal equipment in response to the second synchronous notification information, wherein the second response information carries fourth resource information of the terminal equipment;

And receiving second response information which is returned by the access network element or the mobility management function network element and generated by the access network element in response to the second synchronization notification information, wherein the second response information carries fourth resource information of the access network element.

4. The method for acquiring synchronization resource information according to claim 2, wherein before said sending the first synchronization notification information to the access or mobility management function network element, the method comprises:

receiving strategy updating information sent by a strategy control function network element;

and generating the first synchronous notification information according to the strategy updating information.

5. The method according to claim 4, wherein the first synchronization notification information is Namf exchange N1N2 message conversion request information, the first synchronization notification information includes PDU session modification command information for transmitting to the terminal device and PDU session resource modification request information for transmitting to the access network element, the Namf exchange N1N2 message conversion request information carries first resource information for synchronizing with the access or mobility management function network element, the PDU session modification command information carries second resource information for synchronizing with the terminal device, and the PDU session resource modification request information carries second resource information for synchronizing with the access network element.

6. The method according to claim 2, wherein the first synchronization notification information is resource status synchronization notification information, the first synchronization notification information including N1 resource status synchronization notification information for sending to the terminal device and N2 resource status synchronization notification information for sending to the access network element, wherein the resource status synchronization notification information carries first resource information for synchronizing with the access or mobility management function network element, the N1 resource status synchronization notification information carries second resource information for synchronizing with the terminal device, and the N2 resource status synchronization notification information carries second resource information for synchronizing with the access network element.

7. The method for acquiring the synchronization resource information according to claim 1, wherein the target network element comprises a terminal device, and the method comprises, before the first synchronization notification information is sent to the access or mobility management function network element:

receiving Nsmf PDU session update context request information sent by the access or mobility management function network element, wherein the Nsmf PDU session update context request information carries a packet data unit session modification request sent by the terminal equipment;

And generating first synchronous notification information according to the session updating context request information of the Nsmf PDU.

8. The method according to claim 7, wherein the first synchronization notification information is Nsmf PDU session update context response information, the first synchronization notification information including PDU session modification command information for transmission to the terminal device, the Nsmf PDU session update context response information carrying first resource information for synchronization with the access or mobility management function network element, the PDU session modification command information carrying second resource information for synchronization with the terminal device.

9. The method for obtaining synchronous resource information according to claim 1, wherein the session management function network element includes a home session management function H-SMF network element and an intermediate or visited session management function I/V-SMF network element, and before the first synchronous notification information is sent to the visited or mobility management function network element, the method further comprises:

the H-SMF network element sends third synchronization notification information to the I/V-SMF network element, wherein the third synchronization notification information carries fifth resource information for synchronizing with the I/V-SMF network element;

And the I/V-SMF network element generates the first synchronous notification information according to the fifth resource information.

10. The method according to claim 9, wherein the first synchronization notification information includes one or more second synchronization notification information for sending to a target network element, wherein the first synchronization notification information carries first resource information of the H-SMF network element for synchronizing with the access or mobility management function network element, and the second synchronization notification information carries second resource information of the H-SMF network element for synchronizing with the target network element.

11. A method for acquiring synchronous resource information, which is applied to an access or mobility management function network element, the method comprising:

receiving first synchronization notification information sent by a session management function network element, wherein the first synchronization notification information comprises one or more second synchronization notification information used for being sent to a target network element, the first synchronization notification information carries first resource information used for being synchronized with the access or mobility management function network element, and the second synchronization notification information carries second resource information used for being synchronized with the target network element;

Sending first response information to the session management function network element according to the first synchronous notification information, wherein the first response information carries third resource information for synchronizing with the session management function network element;

sending the second synchronization notification information to the target network element according to the first synchronization notification information;

receiving second response information generated by the target network element according to the second synchronous notification information, wherein the second response information carries fourth resource information of the target network element;

and sending the second response information to the session management function network element.

12. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the method for acquiring synchronous resource information according to any one of claims 1 to 10 or the method for acquiring synchronous resource information according to claim 11 when executing the computer program.

13. A computer-readable storage medium storing computer-executable instructions for performing the synchronous resource information acquisition method according to any one of claims 1 to 10 or implementing the synchronous resource information acquisition method according to claim 11.