WO2023125307A1

WO2023125307A1 - Network element switching method and apparatus, and storage medium and electronic device

Info

Publication number: WO2023125307A1
Application number: PCT/CN2022/141549
Authority: WO
Inventors: 王飞飞; 方宇; 张丽伟; 孙颖; 曹亚平; 郑洁莹; 张会肖
Original assignee: 中国电信股份有限公司
Priority date: 2021-12-30
Filing date: 2022-12-23
Publication date: 2023-07-06
Also published as: CN114302453A

Abstract

Provided in the present disclosure are a network element switching method and apparatus, and a computer-readable storage medium and an electronic device. The method comprises: when a first user plane network element fails, sending a session establishment request to a session management network element by means of a terminal device, and establishing a session by using a second user plane network element (S110); and when the first user plane network element is recovered, the session management network element switching the session established on a second user plane to the first user plane network element, so as to perform the session by means of the first user plane network element (S120). By means of the technical solution in the embodiments of the present disclosure, the problem of it being impossible to cut a session back after a failed user plane network element is recovered can be solved. (FIG. 1)

Description

Network element switching method and device, storage medium and electronic equipment

Cross References to Related Applications

This disclosure claims the priority of the Chinese patent application with application number 202111648802.X and titled "Network element switching method and device, storage medium and electronic equipment" filed on December 30, 2021, and the entire content of the Chinese patent application Incorporated herein by reference in its entirety.

technical field

The present disclosure relates to the technical field of computer communication, and in particular, to a network element switching identification, a network element switching device, a computer-readable storage medium, and electronic equipment.

Background technique

In today's society, the use of the Internet is becoming more and more extensive, and the existing network links are usually composed of multi-layer network devices. During the operation of these network devices, it is inevitable that some device failures will occur, which will affect the user experience.

In related technologies, a hot standby networking solution is usually adopted to improve system reliability. In a networking scenario with dual user plane network elements, if one of the user plane network elements fails, the system can automatically switch the faulty user plane network The network element is switched to another user plane network element to ensure service stability.

It should be noted that the information disclosed in the above background section is only for enhancing the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art.

Contents of the invention

The purpose of the present disclosure is to provide a network element switching method, a network element switching device, a computer-readable storage medium, and electronic equipment.

According to the first aspect of the present disclosure, a network element switching method is provided, including: when the first user plane network element fails, a session establishment request is sent to the session management network element through the terminal device, and the second user plane network element is used to establish Session: when the first user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element, so as to conduct the session through the first user plane network element.

According to the second aspect of the present disclosure, a network element switching device is provided, including: a session establishment module, configured to send a session establishment request to a session management network element through a terminal device when the first user plane network element fails, and adopt the first Two user plane network elements establish a session; the session switching module is configured to switch the session established on the second user plane to the first user plane network element by the session management network element when the first user plane network element recovers, so as to pass through the first user plane network element. A user plane network element conducts a session.

According to a third aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the network element switching method in the first aspect of the foregoing embodiments is implemented.

According to a fourth aspect of the present disclosure, an electronic device is provided, including:

one or more processors; and

The storage device is configured to store one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement the network element handover method according to the first aspect in the foregoing embodiments.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure. Apparently, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings according to these drawings without creative efforts. In the attached picture:

FIG. 1 schematically shows a flow chart that can be applied to the network element switching method in the embodiment of the present disclosure;

Fig. 2 schematically shows a flow chart of the session management network element switching the session established on the second user plane to the first user plane network element when the simulated session establishment state is normal in an exemplary embodiment of the present disclosure;

FIG. 3 schematically shows that in an exemplary embodiment of the present disclosure, the second enabling parameter is adjusted to the first enabling parameter, and the session management network element switches the session established on the second user plane to the first enabling parameter according to the first enabling parameter. Flowchart of the user plane network element;

FIG. 4 schematically shows a flow chart in which a session management network element switches a session established by a second user plane network element to a session link corresponding to a first user plane network element in an exemplary embodiment of the present disclosure;

Fig. 5 schematically shows that in an exemplary embodiment of the present disclosure, the second configuration parameter in the session management network element is updated to the first configuration parameter, so as to switch the session established through the second user plane network element to the first user plane network The flowchart in the session link corresponding to the element;

Fig. 6 schematically shows a flow chart of determining a session management network element corresponding to a session establishment request according to a domain identifier in an exemplary embodiment of the present disclosure;

Fig. 7 schematically shows a flow chart in an exemplary embodiment of the present disclosure in which a session established by a second user plane network element is switched to a session link corresponding to a first user plane network element;

Fig. 8 schematically shows a composition diagram of a network element switching device in an exemplary embodiment of the present disclosure;

FIG. 9 schematically shows a structural diagram of a computer system suitable for implementing electronic devices according to exemplary embodiments of the present disclosure.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, means, steps, etc. may be employed. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

The block diagrams shown in the drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, or in one or more software-hardened modules, or in part of them, or in different networks and/or processor devices and/or microcontroller devices Realize these functional entities in.

However, after the faulty user plane network element is repaired, when switching from the currently used user plane network element to the repaired user plane network element, the session cannot be automatically switched, resulting in traffic interruption. At this time, the terminal device needs to initiate a session Establishing a request and re-establishing a session cannot guarantee the user's requirement for stable traffic, which in turn leads to user complaints.

The network element switching scheme in this disclosure can be applied to the 5G networking environment, and in the network architecture of the hot standby network, when it is necessary to switch the standby user plane network element to the main user plane network element, the disclosure can be adopted plan.

According to the network element switching method provided in this exemplary embodiment, when the first user plane network element fails, the terminal device sends a session establishment request to the session management network element, and the second user plane network element is used to establish a session. When the first user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element, so as to conduct the session through the first user plane network element. As shown in Figure 1, the network element switching method may include the following steps:

Step S110, when the first user plane network element fails, send a session establishment request to the session management network element through the terminal device, and use the second user plane network element to establish a session;

Step S120, when the first user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element, so as to conduct the session through the first user plane network element.

In the network element switching method provided by an embodiment of the present disclosure, when the first user plane network element fails, the terminal device sends a session establishment request to the session management network element, and the second user plane network element is used to establish a session. When a user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element, so as to conduct the session through the first user plane network element. Through the embodiments of the present disclosure, it is possible to switch from the currently used second user plane network element to the first user plane network element after the first user plane network element is repaired, and the session can also be automatically switched to avoid traffic interruption. Re-establishing the session ensures the user's requirement for stable traffic, thereby improving the user's usage efficiency, avoiding the user's complaints, and ensuring the user's trust in the system.

Next, steps S110 to S120 of the network element switching method in this exemplary embodiment will be described in more detail with reference to the accompanying drawings and embodiments.

Step S110, when the first user plane network element fails, send a session establishment request to the session management network element through the terminal device, and use the second user plane network element to establish the session;

In an example embodiment of the present disclosure, a terminal device may establish a session through a first user plane network element. Specifically, the terminal device can send a session establishment request to the access and mobility management network element through the base station, and the access and mobility management network element determines the corresponding session management network element, and the session management network element determines the session establishment request correspondence After the first user plane network element is determined, a session is established according to the first user plane network element.

In an exemplary embodiment of the present disclosure, after the session is established through the first user plane network element, the first user plane network element may fail, at this time, a session establishment request may be sent to the session management network element through the terminal device , and use the second user plane network element to establish a session, and switch the session established through the first user plane network element to the second user plane network element. For example, the first user plane network element is the active UPF network element, and when the active UPF network element fails, a backup UPF network element (second user plane network element) can be used to establish a session. It should be noted that the present disclosure does not specifically limit the failure situation of the first user plane network element.

Among them, the user plane network element can include a UPF (User Plane Function, user plane function) network element. Specifically, the user plane network element can be set as an anchor point indicating movement within the system and between systems, and an external PDU session connected to the data network point, packet routing and forwarding; session management network elements can include SMF (Session Management Function session management function) network elements, and session management network elements can be set to session management, UE IP address allocation and management, UPF selection and control, etc.; Access and mobility management network elements can include AMF (Access and Mobility management Function access and mobility management function) network elements, which can be set as non-access stratum (NAS) signaling terminals, NAS signaling security, and access stratum security control etc. It should be noted that the present disclosure does not specifically limit the specific functions of the user plane network element and the session management network element.

In an example embodiment of the present disclosure, after the session is established by using the second user network element through the above steps, the recovery status of the first user plane network element may be monitored. Specifically, the recovery status of the first user plane network element may include recovery of the first user plane network element and non-recovery of the first user plane network element, wherein the recovery of the first user plane network element may include the restoration of the first user plane network element , or, the first user plane network element may also include a replaced first user plane network element. It should be noted that the present disclosure does not specifically limit the specific form of recovery of the first user plane network element.

In an example embodiment of the present disclosure, after detecting that the first user plane network element is restored, the session management network element may switch the session established on the second user plane network element to the first user plane network element, so as to pass The first user plane network element performs a session. Wherein, when the session established on the second user plane is switched to the first user plane network element, the session established on the second user plane network element will not be interrupted, so as to ensure the service requirement of the user. Specifically, when switching the session established on the second user plane network element to the first user plane network element, the user plane network element parameters corresponding to the session management network element can be adjusted to the user plane network element corresponding to the first user plane network element. Network element parameters can enable smooth session switching without requiring terminal devices to re-establish sessions. It should be noted that the present disclosure does not specifically limit the specific manner in which the session management network element switches the session established on the second user plane to the first user plane network element.

In an example embodiment of the present disclosure, after the session is established by the second user plane network element, the session anticipation policy may be adjusted to use the first user plane network element to establish the session. Specifically, after the first user plane network element fails, the second user plane network element is used to establish a session. At this time, the session expectation policy may be adjusted to use the first user plane network element to establish a session. Wherein, the session anticipation policy refers to a policy that needs to be adopted by a certain user plane network element. Specifically, after the session expectation policy is adjusted to use the first user plane network element to establish a session, the system will monitor the recovery of the first user plane network element, and when the first user plane The session established on the network is handed over to the first user plane network element. It should be noted that, the present disclosure does not specifically limit the specific form of the session expectation policy.

In an example embodiment of the present disclosure, the simulated session establishment state of the simulated session established by the first user plane network element can be obtained, and when the simulated session establishment state is normal, the session management network element will use the session established on the second user plane to Switch to the first user plane network element. Referring to FIG. 2, when the simulated session establishment state is normal, the session management network element switches the session established on the second user plane to the first user plane network element, which may include the following steps S210-S220:

Step S210, obtaining a simulated session establishment status for simulating the establishment of a session by using the first user plane network element;

In an example embodiment of the present disclosure, after the session is established by using the second user plane network element, the recovery status of the first user plane network element may be monitored. Specifically, during monitoring, a simulated session establishment state in which a session is established by using the first user plane network element may be simulated. Wherein, the simulated session establishment state of using the first user plane network element to establish a session refers to establishing a simulated session model through simulated path calculation, and determining whether the session can be established successfully when using the first user plane network element according to the simulated session model , specifically, by simulating the session model to determine whether the service flow of the session link corresponding to the first user plane network element is normal when the first user plane network element is used.

In an example embodiment of the present disclosure, simulating the session establishment status may include simulating the session establishment status as normal and simulating the session establishment status as abnormal. Wherein, the simulated session establishment state is not normal means that the session establishment is unsuccessful when the first user plane network element is determined according to the simulated session model, that is, when the first user plane network element is determined to be used through the simulated session model, the first user plane The service flow of the session link corresponding to the NE is abnormal.

Step S220, when the simulated session establishment state is normal, the session management network element switches the session established on the second user plane to the first user plane network element.

In an example embodiment of the present disclosure, when the simulated session establishment status is normal, it means that the first user plane network element has been repaired, and when the session is conducted through the first user plane network element, its service flow can also run normally, At this time, the session established on the second user plane may be switched to the first user plane network element through the session management network element.

Through the above steps S210-S220, it is possible to obtain the simulated session establishment status for simulating the establishment of a session using the first user plane network element. When the simulated session establishment status is normal, the session management network element switches the session established on the second user plane to the first User plane network element.

In an example embodiment of the present disclosure, the second enabling parameter corresponding to the switching policy of the user plane network element may be acquired, the second enabling parameter may be adjusted to the first enabling parameter, and the session management network element shall, according to the first enabling parameter The parameter switches the session established on the second user plane to the first user plane network element. Referring to FIG. 3 , the second enabling parameter is adjusted to the first enabling parameter, and the session management network element switches the session established on the second user plane to the first user plane network element according to the first enabling parameter, which may include The following steps S310-S320:

Step S310, acquiring a second enabling parameter corresponding to the user plane network element handover strategy;

In an example embodiment of the present disclosure, when it is determined through the above steps that the simulated session establishment state is normal, the second enabling parameter corresponding to the user plane network element switching policy may be acquired. Wherein, the enabling parameter corresponding to the user plane network element switching policy may be set to indicate whether the session established on the second user plane needs to be handed over to the first user plane network element through the session management network element. Specifically, when the enabling parameter corresponding to the user plane network element switching policy is the second enabling parameter, it means that the session established on the second user plane does not need to be handed over to the first user plane network element through the session management network element. It should be noted that, the present disclosure does not specifically limit the specific form of the enabling parameter corresponding to the user plane network element handover policy.

Step S320, adjusting the second enabling parameter to the first enabling parameter, and the session management network element switches the session established on the second user plane to the first user plane network element according to the first enabling parameter.

In an example embodiment of the present disclosure, after the second enabling parameter corresponding to the user plane network element handover policy is acquired through the above steps, the second enabling parameter may be adjusted to the first enabling parameter. Specifically, the first enabling parameter indicates that the session established on the second user plane needs to be handed over to the first user plane network element through the session management network element. After adjusting the second enabling parameter corresponding to the switching policy of the user plane network element to the first enabling parameter, the session established on the second user plane may be switched to the first user plane network element through the session management network element. It should be noted that the present disclosure does not specifically limit the specific manner in which the session management network element switches the session established on the second user plane to the first user plane network element according to the first enabling parameter.

For example, the second enabling parameter corresponding to the user plane NE switching policy is disable, which means that it is not necessary to switch the session established on the second user plane to the first user plane NE through the session management NE. When the session establishment state is normal, the second enabling parameter disable can be adjusted to enable, and at this time, the session management network element can switch the session established on the second user plane to the first user plane network element.

Through the above steps S310-S320, the second enabling parameter corresponding to the switching policy of the user plane network element can be obtained, the second enabling parameter is adjusted to the first enabling parameter, and the session management network element changes the second enabling parameter according to the first enabling parameter. The session established on the user plane is handed over to the first user plane network element.

In an exemplary embodiment of the present disclosure, the session management network element may obtain the first configuration parameter corresponding to the session establishment request, determine the first user plane network element used for switching the session according to the first configuration parameter, and determine the first user plane network element used for switching the session according to the first user plane network The session link is established by the session management network element, and the session management network element switches to the session link corresponding to the first user plane network element through the session established by the second user plane network element. Referring to FIG. 4, the session management network element switches the session established by the second user plane network element to the session link corresponding to the first user plane network element, which may include the following steps S410-S430:

Step S410, the session management network element obtains the first configuration parameter corresponding to the session establishment request;

In an example embodiment of the present disclosure, after the failure of the first user plane network element, a session can be performed through the second user plane network element, and after the recovery of the first user plane network element, the session management network element can obtain the session establishment The first configuration parameter corresponding to the request. Wherein, the first configuration parameter corresponding to the session establishment request may be set to indicate the first user plane network element to be used when establishing the session. Specifically, the first configuration parameter corresponding to the session establishment request may include a DNN session identifier (Data Network Name), a DNN route, an IP address (Internet Protocol Address, Internet Protocol Address) and the like. It should be noted that, the present disclosure does not specifically limit the specific content of the first configuration parameter corresponding to the session establishment request.

Step S420, determine the first user plane network element used for switching the session according to the first configuration parameter, and establish the session link according to the first user plane network element;

In an example embodiment of the present disclosure, after the first configuration parameter corresponding to the session establishment request is obtained through the above steps, the first user plane network element used to establish the session may be determined according to the first configuration parameter. Specifically, the first configuration parameter may be set to indicate the first user plane network element to be used to establish the session. After the first configuration parameter is obtained, the user plane network element corresponding to the first configuration parameter may be searched, and the user plane network element The network element is determined as the first user plane network element. It should be noted that the present disclosure does not specifically limit the specific manner of determining the first user plane network element used to establish the session according to the first configuration parameter.

In an example embodiment of the present disclosure, after the first user plane network element to be used for session handover is determined through the above steps, a session link may be established according to the first user plane network element. Specifically, the second user plane network element in the original session link may be switched to the first user plane network element determined through the above steps, so as to establish the session link according to the first user plane network element. It should be noted that the present disclosure does not specifically limit the specific manner of establishing the session link according to the first user plane network element.

Step S430, the session management network element switches the session established by the second user plane network element to the session link corresponding to the first user plane network element.

In an exemplary embodiment of the present disclosure, after the session link is established according to the first user plane network element through the above steps, the session management network element can switch to the first user through the session established by the second user plane network element. In the session link corresponding to the plane NE. Specifically, the establishment of the session link according to the first user plane network element can be set to indicate that the first user plane network element has been recovered and the session can be conducted through the first user plane network element. The session established by the first user plane network element is switched to the session link established by the first user plane network element. It should be noted that the present disclosure does not specifically limit the specific manner in which the session established by the session management network element is switched to the session link corresponding to the first user plane network element through the second user plane network element.

Through the above steps S410-S430, the session management network element can obtain the first configuration parameter corresponding to the session establishment request, determine the first user plane network element used for switching the session according to the first configuration parameter, and establish a session link according to the first user plane network element The session management network element switches the session established by the second user plane network element to the session link corresponding to the first user plane network element.

In an example embodiment of the present disclosure, the second configuration parameter corresponding to the second user plane network element in the session management network element may be obtained, and the second configuration parameter in the session management network element may be updated to the first configuration parameter, so as to Switching the session established through the second user plane network element to the session link corresponding to the first user plane network element. Referring to Figure 5, update the second configuration parameter in the session management network element to the first configuration parameter, so as to switch the session established through the second user plane network element to the session link corresponding to the first user plane network element , may include the following steps S510-S520:

Step S510, acquiring a second configuration parameter corresponding to a second user plane network element in the session management network element;

In an example embodiment of the present disclosure, the second configuration parameter corresponding to the second user plane network element in the session management network element may be acquired. Specifically, when the first user plane network element fails, a session can be established through the second user plane network element, and the configuration parameters configured in the session management network element are the second configuration parameters corresponding to the second user plane network element. At this time, The second configuration parameter corresponding to the second user plane network element may be obtained from the session management network element. It should be noted that the present disclosure does not specifically limit the specific manner of obtaining the second configuration parameter corresponding to the second user plane network element in the session management network element.

Step S520, updating the second configuration parameter in the session management network element to the first configuration parameter, so as to switch the session established through the second user plane network element to the session link corresponding to the first user plane network element.

In an example embodiment of the present disclosure, after the second configuration parameter corresponding to the second user plane network element is obtained through the above steps, the second configuration parameter in the session management network element may be updated to the first configuration parameter. Specifically, the configuration parameter in the session management network element may be set to indicate the user plane network element to be used by the session, and after updating the second configuration parameter in the session management network element to the first configuration parameter, the The session established by the network element on the user plane is switched to the session link corresponding to the first user plane network element. It should be noted that the present disclosure does not specifically limit the manner of updating the second configuration parameter in the session management network element to the first configuration parameter.

Through the above steps S510-S520, the second configuration parameter corresponding to the second user plane network element in the session management network element can be obtained, and the second configuration parameter in the session management network element can be updated to the first configuration parameter, so that the The session established by the user plane network element is switched to the session link corresponding to the first user plane network element.

In an exemplary embodiment of the present disclosure, the location identifier corresponding to the session establishment request may be obtained, the session management network element corresponding to the session establishment request is determined according to the location identifier, and the session establishment request is sent to the session management network element through the terminal device. Referring to FIG. 6, determining the session management network element corresponding to the session establishment request according to the location identifier may include the following steps S610-S620:

Step S610, obtaining the domain identification corresponding to the session establishment request, and determining the session management network element corresponding to the session establishment request according to the domain identification;

In step S620, the terminal device sends a session establishment request to the session management network element.

In an exemplary embodiment of the present disclosure, the location identifier corresponding to the session establishment request can be obtained, and the session management network element corresponding to the session establishment request can be determined according to the location identifier. Specifically, the session establishment request may include the DNN, and the DNN may include the domain identifier. Wherein, the property identifier can be set to indicate the session management network element to be used.

For example, after the access and mobility management network element receives the DNN corresponding to the session establishment request, it can obtain the domain identifier corresponding to the session establishment request from the DNN, and can determine the domain identifier to be used according to the domain identifier corresponding to the session establishment request. It is the session management network element of a certain area.

It should be noted that the present disclosure does not specifically limit the specific manner of determining the session management network element corresponding to the session establishment request according to the location identifier.

Through the above steps S610-S620, the domain identification corresponding to the session establishment request can be obtained, the session management network element corresponding to the session establishment request is determined according to the domain identification, and the session establishment request is sent to the session management network element through the terminal device.

In an exemplary embodiment of the present disclosure, a terminal device (UE) may send a session establishment request to a base station (gNB), and the base station then sends the session establishment request to an access and mobility management network element (AMF), and the access and mobility management network element (AMF) The mobility management network element determines the corresponding session management network element (SMF) according to the DNN corresponding to the session establishment request, the session management network element obtains the signed session authentication information from the same data management network element (UDM, Unified Data Management), and Session authentication and authorization are performed in the second user plane network element, the session management network element determines the policy control network element (PCF, Policy Control Function) corresponding to the second user plane network element, and obtains the service data flow policy from the policy control network element and charging control policy (PCC policy), the session management network element sends the session establishment information and the PCC policy to the second user plane network element, the session management network element sends the session establishment information to the access and mobility management network element, and receives the session response , the access and mobility management network element notifies the base station to establish a radio bearer, and the base station establishes a radio bearer with the terminal equipment. When using the second user plane network element to establish a session, the session expectation policy can be adjusted to use the first user plane network element to establish a session. When the first user plane network element recovers, the link management module can set the session management network element to The second configuration parameter in is updated to the first configuration parameter, and the session established through the second user plane network element is switched to the session link corresponding to the first user plane network element.

Referring to FIG. 7, switching the session established on the second user plane to the first user plane network element, so as to conduct the session through the first user plane network element, may include the following steps S701-S708:

Step S701, UE sends a session establishment request to gNB; Step S702, gNB sends the session establishment request to AMF; Step S703, AMF determines the corresponding SMF; Step S704, SMF performs session authentication and authorization in UPF; Step S705, SMF Determine the corresponding PCF, and obtain the PCC policy; Step S706, SMF sends session establishment information and PCC policy to UPF; Step S707, SMF sends session establishment information to AMF, accepts session response; Step S708, AMF notifies gNB to establish radio bearer; Step S709, the UE establishes a radio bearer with the gNB; Step S710, updates the second configuration parameter in the session management network element to the first configuration parameter; Step S711, switches the session established through the second user plane network element to the first user plane In the session link corresponding to the NE.

In an exemplary embodiment of the present disclosure, a network monitoring module, a database module, an intelligent path calculation module, and a link management module may be set. Specifically, the network monitoring module is set to monitor the forwarding of the service flow. When the second user plane network element is used to establish a session, the session anticipation strategy can be adjusted to use the first user plane network element to establish a session; the database module can be set to store The configuration parameters corresponding to the user plane network element; the intelligent path calculation module can be set to obtain the simulated session establishment status of the simulation using the first user plane network element to establish a session, and when the simulated session establishment status is normal, switch the user plane network element to the corresponding The second enabling parameter is adjusted to the first enabling parameter; the link management module is configured to update the second configuration parameter in the session management network element to the first configuration parameter. It should be noted that, this embodiment does not specifically limit the implementation of specific functions in various modules of the present disclosure.

It should be noted that the above-mentioned figures are only schematic illustrations of processes included in the method according to the exemplary embodiments of the present disclosure, and are not intended to be limiting. It is easy to understand that the processes shown in the above figures do not imply or limit the chronological order of these processes. In addition, it is also easy to understand that these processes may be executed synchronously or asynchronously in multiple modules, for example.

In addition, in an exemplary embodiment of the present disclosure, a network element switching device is also provided. Referring to FIG. 8 , a network element switching device 800 includes: a session establishment module 810 and a session switching module 820 .

Wherein, the session establishment module is set to send a session establishment request to the session management network element through the terminal device when the first user plane network element fails, and uses the second user plane network element to establish a session; the session switching module is set to When the user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element, so as to conduct the session through the first user plane network element.

In an exemplary embodiment of the present disclosure, based on the foregoing solution, after the session is established using the second user plane network element, the device further includes: an expected policy adjustment unit configured to adjust the session expected policy to adopt the first user plane network element The network element establishes a session.

In an exemplary embodiment of the present disclosure, based on the foregoing solution, when the first user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element, and the device further Including: a simulated session establishment status acquisition unit, configured to obtain a simulated session establishment status that simulates the establishment of a session using the first user plane network element; a status normal processing unit, configured to set the session management network element to the second when the simulated session establishment status is normal. The session established on the user plane is handed over to the first user plane network element.

In an exemplary embodiment of the present disclosure, based on the foregoing solution, the session management network element switches the session established on the second user plane to the first user plane network element, and the device further includes: a second enabling parameter acquisition unit, It is set to obtain the second enabling parameter corresponding to the switching strategy of the user plane network element; the enabling parameter adjustment unit is configured to adjust the second enabling parameter to the first enabling parameter, and the session management network element sets the The session established on the second user plane is handed over to the first user plane network element.

In an exemplary embodiment of the present disclosure, based on the foregoing solution, the session management network element switches the session established on the second user plane to the first user plane network element, and the device further includes: a first configuration parameter acquisition unit, setting Obtaining the first configuration parameter corresponding to the session establishment request for the session management network element; the session link establishment unit is configured to determine the first user plane network element used to switch the session according to the first configuration parameter, and establish the session according to the first user plane network element Link: a session link switching unit configured to switch the session established by the session management network element to the session link corresponding to the first user plane network element through the second user plane network element.

In an exemplary embodiment of the present disclosure, based on the foregoing solution, the session management network element switches the session established through the second user plane network element to the session link corresponding to the first user plane network element, and the device further includes: The second configuration parameter acquisition unit is configured to obtain the second configuration parameter corresponding to the second user plane network element in the session management network element; the second configuration parameter update unit is configured to update the second configuration parameter in the session management network element to The first configuration parameter is used to switch the session established through the second user plane network element to the session link corresponding to the first user plane network element.

In an exemplary embodiment of the present disclosure, based on the foregoing solution, the terminal device sends a session establishment request to the session management network element, and the device further includes: a location identification obtaining unit configured to obtain the location identification corresponding to the session establishment request, according to The domain identifier determines the session management network element corresponding to the session establishment request; the session establishment request sending unit is configured to send the session establishment request to the session management network element through the terminal device.

Since each functional module of the network element switching device in the exemplary embodiment of the present disclosure corresponds to the steps in the exemplary embodiment of the above-mentioned network element switching method, for details not disclosed in the embodiment of the disclosed device, please refer to the above-mentioned network element in the present disclosure An embodiment of a meta-switching method.

It should be noted that although several modules or units provided as an action-performing device are mentioned in the above detailed description, this division is not mandatory. Actually, according to the embodiment of the present disclosure, the features and functions of two or more modules or units described above may be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided to be embodied by a plurality of modules or units.

In addition, in an exemplary embodiment of the present disclosure, an electronic device capable of implementing the above network element switching method is also provided.

Those skilled in the art can understand that various aspects of the present disclosure can be implemented as a system, method or program product. Therefore, various aspects of the present disclosure can be embodied in the following forms, namely: a complete hardware embodiment, a complete software embodiment (including firmware, microcode, etc.), or an embodiment combining hardware and software aspects, which may be collectively referred to herein as "circuit", "module" or "system".

An electronic device 900 according to such an embodiment of the present disclosure is described below with reference to FIG. 9 . The electronic device 900 shown in FIG. 9 is only an example, and should not limit the functions and scope of use of the embodiments of the present disclosure.

As shown in FIG. 9, electronic device 900 takes the form of a general-purpose computing device. The components of the electronic device 900 may include, but are not limited to: the at least one processing unit 910 mentioned above, the at least one storage unit 920 mentioned above, the bus 930 connecting different system components (including the storage unit 920 and the processing unit 910 ), and the display unit 940.

Wherein, the storage unit stores program codes, and the program codes can be executed by the processing unit 910, so that the processing unit 910 executes the steps according to various exemplary embodiments of the present disclosure described in the above “Exemplary Methods” section of this specification. For example, the processing unit 910 may perform step S110 as shown in FIG. 1, when the first user plane network element fails, send a session establishment request to the session management network element through the terminal device, and use the second user plane network element to establish a session; Step S120, when the first user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element, so as to conduct the session through the first user plane network element.

The storage unit 920 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 921 and/or a cache storage unit 922 , and may further include a read-only storage unit (ROM) 923 .

The storage unit 920 may also include a program/utility 924 having a set (at least one) of program modules 925, such program modules 925 including but not limited to: an operating system, one or more application programs, other program modules, and program data, Implementations of networked environments may be included in each or some combination of these examples.

Bus 930 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local area using any of a variety of bus structures. bus.

The electronic device 900 can also communicate with one or more external devices 970 (such as keyboards, pointing devices, Bluetooth devices, etc.), and can also communicate with one or more devices that enable the user to interact with the electronic device 900, and/or communicate with Any device (eg, router, modem, etc.) that enables the electronic device 900 to communicate with one or more other computing devices. Such communication may occur through input/output (I/O) interface 950 . Moreover, the electronic device 900 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN) and/or a public network such as the Internet) through the network adapter 960 . As shown, the network adapter 960 communicates with other modules of the electronic device 900 through the bus 930 . It should be appreciated that although not shown, other hardware and/or software modules may be used in conjunction with electronic device 900, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives And data backup storage system, etc.

Through the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described here can be implemented by software, or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of the present disclosure can be embodied in the form of software products, and the software products can be stored in a non-volatile storage medium (which can be CD-ROM, U disk, mobile hard disk, etc.) or on the network , including several instructions to make a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) execute the method according to the embodiment of the present disclosure.

In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium on which a program product capable of implementing the above-mentioned method in this specification is stored. In some possible embodiments, various aspects of the present disclosure can also be implemented in the form of a program product, which includes program code. When the program product runs on the terminal device, the program code is used to make the terminal device execute the above-mentioned Steps according to various exemplary embodiments of the present disclosure described in the "Exemplary Methods" section.

A computer readable signal medium may include a data signal carrying readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for performing the operations of the present disclosure may be written in any combination of one or more programming languages, including object-oriented programming languages—such as Java, C++, etc., as well as conventional procedural programming Language - such as "C" or similar programming language. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server to execute. In cases involving a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (for example, using an Internet service provider). business to connect via the Internet).

In addition, the above-mentioned drawings are only schematic illustrations of processes included in the method according to the exemplary embodiments of the present disclosure, and are not intended to be limiting. It is easy to understand that the processes shown in the above figures do not imply or limit the chronological order of these processes. In addition, it is also easy to understand that these processes may be executed synchronously or asynchronously in multiple modules, for example.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present disclosure is intended to cover any modification, use or adaptation of the present disclosure. These modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. . The specification and examples are to be considered exemplary only, with the true scope and spirit of the disclosure indicated by the appended claims.

Claims

A network element switching method, the method comprising:

When the first user plane network element fails, send a session establishment request to the session management network element through the terminal device, and use the second user plane network element to establish the session;

When the first user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element, so as to conduct the session through the first user plane network element.
The method according to claim 1, wherein, after the session is established by using the second user plane network element, the method further comprises:

The session anticipation policy is adjusted to use the first user plane network element to establish the session.
The method according to claim 1, wherein when the first user plane network element recovers, the session management network element switches the session established on the second user plane to the first user plane network element ,include:

Acquiring a simulated session establishment status for simulating the establishment of a session by using the first user plane network element;

When the simulated session establishment state is normal, the session management network element switches the session established on the second user plane to the first user plane network element.
The method according to claim 3, wherein the session management network element switches the session established on the second user plane to the first user plane network element, comprising:

Obtaining a second enabling parameter corresponding to a user plane network element switching strategy;

The second enabling parameter is adjusted to the first enabling parameter, and the session management network element switches the session established on the second user plane to the first user plane network element according to the first enabling parameter.
The method according to claim 3, wherein the session management network element switches the session established on the second user plane to the first user plane network element, comprising:

The session management network element acquires a first configuration parameter corresponding to the session establishment request;

determining a first user plane network element used to switch the session according to the first configuration parameter, and establishing a session link according to the first user plane network element;

The session management network element switches the session established by the second user plane network element to the session link corresponding to the first user plane network element.
The method according to claim 5, wherein the session management network element switches the session established through the second user plane network element to the session link corresponding to the first user plane network element, comprising:

Obtain a second configuration parameter corresponding to the second user plane network element in the session management network element;

updating the second configuration parameter in the session management network element to the first configuration parameter, so as to switch the session established through the second user plane network element to the session link corresponding to the first user plane network element .
The method according to claim 1, wherein the sending the session establishment request to the session management network element through the terminal device includes:

Acquiring a domain identifier corresponding to the session establishment request, and determining a session management network element corresponding to the session establishment request according to the domain identifier;

Sending a session establishment request to the session management network element through the terminal device.
A network element switching device, the device comprising:

The session establishment module is configured to send a session establishment request to the session management network element through the terminal device when the first user plane network element fails, and use the second user plane network element to establish the session;

A session switching module, configured to switch the session established on the second user plane to the first user plane network element by the session management network element when the first user plane network element recovers, so as to pass the first user plane The network element conducts a session.
A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method according to any one of claims 1-7 is implemented.
An electronic device comprising:

one or more processors; and

A memory configured to store one or more programs, when the one or more programs are executed by the one or more processors, so that the one or more processors implement any one of claims 1-7 method described in the item.