CN114302453A - Network element switching method and device, storage medium and electronic equipment - Google Patents
Network element switching method and device, storage medium and electronic equipment Download PDFInfo
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Abstract
The present disclosure relates to the field of communications technologies, and in particular, to a network element switching method and apparatus, a computer-readable storage medium, and an electronic device, where the method includes: when the first user plane network element has a fault, sending a session establishment request to a session management network element through terminal equipment, and establishing a session by adopting a second user plane network element; and when the first user plane network element is recovered, the session management network element switches the session established on the second user plane to the first user plane network element so as to carry out the session through the first user plane network element. By the technical scheme of the embodiment of the disclosure, the problem that the session cannot be switched back after the failed user plane network element is recovered can be solved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a network element switching identifier, a network element switching apparatus, a computer-readable storage medium, and an electronic device.
Background
In today's society, the internet is becoming more and more popular, and existing network links are typically composed of multiple layers of network devices. In the process of running the network devices, some device faults are inevitable, and the use experience of users is influenced.
In the related art, a hot standby networking scheme is usually adopted to improve the reliability of the system, and in a networking scene of a dual-user plane network element, if one user plane network element fails, the system can automatically switch the failed user plane network element to another user plane network element, so that the service stability is ensured.
However, after the faulty user plane network element is repaired, when the user plane network element currently in use is switched to the repaired user plane network element, the session cannot be automatically switched, which results in traffic interruption, and at this time, the terminal device needs to initiate a session establishment request to reestablish the session, which cannot guarantee the requirement of the user for traffic stability, thereby causing user complaints.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure aims to provide a network element switching method, a network element switching apparatus, a computer-readable storage medium, and an electronic device, which can solve the problem that a session cannot be switched back after a failed user plane network element is recovered.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.
According to a first aspect of the present disclosure, there is provided a network element handover method, including: when the first user plane network element has a fault, sending a session establishment request to a session management network element through terminal equipment, and establishing a session by adopting a second user plane network element; and when the first user plane network element is recovered, the session management network element switches the session established on the second user plane to the first user plane network element so as to carry out 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 by using the second user plane network element, the method further includes: the session expectation policy is adjusted to establish the session with the first user plane network element.
In an exemplary embodiment of the present disclosure, based on the foregoing scheme, when the first user plane network element recovers, the switching, by the session management network element, the session established on the second user plane to the first user plane network element includes: acquiring a simulation session establishment state for simulating the establishment of a session by using a first user plane network element; and 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 exemplary embodiment of the present disclosure, based on the foregoing scheme, the switching, by the session management network element, the session established on the second user plane to the first user plane network element includes: acquiring a second enabling parameter corresponding to the user plane network element switching strategy; and adjusting the second enabling parameter to be the first enabling parameter, and switching the session established on the second user plane to the first user plane network element by the session management network element according to the first enabling parameter.
In an exemplary embodiment of the present disclosure, based on the foregoing scheme, the switching, by the session management network element, the session established on the second user plane to the first user plane network element includes: a session management network element acquires a first configuration parameter corresponding to a session establishment request; determining a first user plane network element adopted by session switching according to the first configuration parameter, and establishing a session link according to the first user plane network element; and the session management network element is switched to the session link corresponding to the first user plane network element through the session established by the second user plane network element.
In an exemplary embodiment of the present disclosure, based on the foregoing scheme, the switching, by the session management network element, the session established through the second user plane network element to the session link corresponding to the first user plane network element includes: acquiring a second configuration parameter corresponding to a second user plane network element in the session management network element; and updating the second configuration parameter in the session management network element into the first configuration parameter so as to switch the session established by the second user plane network element into the session link corresponding to the first user plane network element.
In an exemplary embodiment of the present disclosure, based on the foregoing scheme, sending, by a terminal device, a session establishment request to a session management network element includes: acquiring an attribute identifier corresponding to the session establishment request, and determining a session management network element corresponding to the session establishment request according to the attribute identifier; and sending a session establishment request to a session management network element through the terminal equipment.
According to a second aspect of the present disclosure, there is provided a network element switching apparatus, including: the session establishing module is used for sending a session establishing request to the session management network element through the terminal equipment when the first user plane network element fails, and establishing a session by adopting a second user plane network element; and the session switching module is used for switching 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 is recovered, so as to carry out the session through the first user plane network element.
According to a third aspect of the present disclosure, there is provided a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the network element switching method of the first aspect as in the above embodiments.
According to a fourth aspect of the present disclosure, there is provided an electronic device comprising:
one or more processors; and
storage means for storing one or more programs which, when executed by one or more processors, cause the one or more processors to implement the network element handover method of the first aspect as in the above embodiments.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the network element switching method provided in an embodiment of the present disclosure, when a first user plane network element fails, a session establishment request is sent to a session management network element through a terminal device, a session is established by using a second user plane network element, and when the first user plane network element recovers, the session management network element switches a session established on the second user plane to the first user plane network element, so as to perform a session through the first user plane network element. By the embodiment of the disclosure, after the first user plane network element is repaired, the currently used second user plane network element can be switched to the first user plane network element, and the session can also be automatically switched, so that the flow interruption is avoided, the session does not need to be reestablished, and the requirement of the user on the flow stability is ensured, thereby improving the use efficiency of the user, avoiding the user from initiating complaints, and ensuring the trust of the user on the system.
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 disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty. In the drawings:
fig. 1 schematically shows a flow chart of a network element switching method in which the embodiments of the present disclosure can be applied;
fig. 2 schematically illustrates a flowchart of a session management network element switching a session established on a second user plane to a first user plane network element when a simulated session establishment state is normal in an exemplary embodiment of the present disclosure;
fig. 3 schematically illustrates a flowchart of adjusting the second enabling parameter to be 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 the exemplary embodiment of the present disclosure;
fig. 4 schematically illustrates a flowchart of switching a session established by a session management network element through 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 illustrates a flowchart of updating a second configuration parameter in a session management network element to a first configuration parameter to switch a session established through 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. 6 schematically shows a flowchart for determining a session management network element corresponding to a session establishment request according to a home identifier in an exemplary embodiment of the present disclosure;
fig. 7 schematically illustrates a flowchart of switching 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. 8 schematically illustrates a composition diagram of a network element switching apparatus in an exemplary embodiment of the present disclosure;
fig. 9 schematically shows a schematic structural diagram of a computer system of an electronic device suitable for implementing an exemplary embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different 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 to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. 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 disclosure.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in the form of software, or in one or more software-hardened modules, or in different networks and/or processor devices and/or microcontroller devices.
In today's society, the internet is becoming more and more popular, and existing network links are typically composed of multiple layers of network devices. In the process of running the network devices, some device faults are inevitable, and the use experience of users is influenced.
In the related art, a hot standby networking scheme is usually adopted to improve the reliability of the system, and in a networking scene of a dual-user plane network element, if one user plane network element fails, the system can automatically switch the failed user plane network element to another user plane network element, so that the service stability is ensured.
However, after the faulty user plane network element is repaired, when the user plane network element currently in use is switched to the repaired user plane network element, the session cannot be automatically switched, which results in traffic interruption, and at this time, the terminal device needs to initiate a session establishment request to reestablish the session, which cannot guarantee the requirement of the user for traffic stability, thereby causing user complaints.
The scheme for switching the network elements in the disclosure can be applied to a network architecture of a hot standby network in a 5g networking environment, and can be adopted when the standby user plane network elements need to be switched to the main user plane network elements.
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, the second user plane network element is used to establish a session, and 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 perform a session through the first user plane network element. As shown in fig. 1, the network element switching method may include the following steps:
step S110, when the first user plane network element is in fault, a session establishment request is sent to a session management network element through terminal equipment, and a second user plane network element is adopted 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 perform a session through the first user plane network element.
In the network element switching method provided in an embodiment of the present disclosure, when a first user plane network element fails, a session establishment request is sent to a session management network element through a terminal device, a session is established by using a second user plane network element, and when the first user plane network element recovers, the session management network element switches a session established on the second user plane to the first user plane network element, so as to perform a session through the first user plane network element. By the embodiment of the disclosure, after the first user plane network element is repaired, the currently used second user plane network element can be switched to the first user plane network element, and the session can also be automatically switched, so that the flow interruption is avoided, the session does not need to be reestablished, and the requirement of the user on the flow stability is ensured, thereby improving the use efficiency of the user, avoiding the user from initiating complaints, and ensuring the trust of the user on the system.
Next, the steps S110 to S120 of the network element switching method in the present exemplary embodiment will be described in more detail with reference to the drawings and the embodiments.
Step S110, when the first user plane network element is in fault, a session establishment request is sent to a session management network element through terminal equipment, and a second user plane network element is adopted to establish a session;
in an example embodiment of the present disclosure, the terminal device may establish the session through the first user plane network element. Specifically, the terminal device may send a session establishment request to the access and mobility management network element through the base station, the access and mobility management network element then determines the corresponding session management network element, the session management network element determines the first user plane network element corresponding to the session establishment request, and after determining the first user plane network element, establishes a session according to the first user plane network element.
In an example embodiment of the present disclosure, after a session is established through a first user plane network element, the first user plane network element may have a fault, and at this time, a session establishment request may be sent to a session management network element through a terminal device, and a session is established through a second user plane network element, and the session established through the first user plane network element is switched to the second user plane network element. For example, the first user plane network element is a primary UPF network element, and when the primary UPF network element fails, a standby UPF network element (a second user plane network element) may be used to establish a session. It should be noted that, the disclosure is not limited to the failure situation of the first user plane network element.
The User Plane network element may include a UPF (User Plane Function) network element, and specifically, the User Plane network element may be configured to indicate an anchor point moving in and between systems, an external PDU session point connected to a data network, a packet route, and a forwarding; the Session Management network element may include an SMF (Session Management Function) network element, and the Session Management network element may be used for Session Management, UE IP address allocation and Management, selection and control of UPF, and the like; the Access and Mobility management network element may include an AMF (Access and Mobility management Function) network element, and may be used for a non-Access stratum (NAS) signaling terminal, NAS signaling security, Access stratum security control, and the like. It should be noted that, the present disclosure does not make any special limitation on the specific functions of the user plane network element and the session management network element.
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 perform a session through the first user plane 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 condition of the first user plane network element may be monitored. Specifically, the recovery condition of the first user plane network element may include that the first user plane network element recovers and the first user plane network element is not recovered, where the recovery of the first user plane network element may include that the first user plane network element is repaired, or the first user plane network element may further include that a new first user plane network element is replaced. It should be noted that the present disclosure is not limited to a specific form of the first user plane network element recovery.
In an example embodiment of the present disclosure, after monitoring that the first user plane network element recovers, 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 perform the session through the first user plane network element. 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 is not interrupted, and the service requirement of the user is ensured. Specifically, when the session established on the second user plane network element is switched to the first user plane network element, the user plane network element parameter corresponding to the session management network element may be adjusted to the user plane network element parameter corresponding to the first user plane network element, so that the session may be switched smoothly without the terminal device reestablishing the session. It should be noted that, in the present disclosure, a specific manner of switching the session established on the second user plane to the first user plane network element by the session management network element is not particularly limited.
In an example embodiment of the present disclosure, the session expecting policy may be adjusted to establish the session with the first user plane network element after establishing the session with the second user plane network element. Specifically, after the first user plane network element fails, the session is established by using the second user plane network element, and at this time, the session expectation policy may be adjusted to establish the session by using the first user plane network element. The session expectation policy refers to a policy that a certain user plane network element needs to be adopted. Specifically, after the session expectation policy is adjusted to adopt the first user plane network element to establish the session, the system monitors the recovery condition of the first user plane network element, and switches the session established on the second user plane to the first user plane network element in time when the first user plane network element is recovered. It should be noted that the present disclosure is not limited to the specific form of the session expecting policy.
In an example embodiment of the present disclosure, a simulated session establishment state for simulating establishment of a session using a first user plane network element may be obtained, and when the simulated session establishment state is normal, a session management network element switches a session established on a second user plane to the first user plane network element. Referring to fig. 2, when the simulated session establishment state is normal, the switching, by the session management network element, the session established on the second user plane to the first user plane network element may include the following steps S210 to S220:
step S210, obtaining a simulation session establishment state for simulating the establishment of a session by adopting a first user plane network element;
in an example embodiment of the present disclosure, after establishing a session with a second user plane network element, a recovery of the first user plane network element may be monitored. Specifically, during the monitoring, a simulation session establishment state in which a session is established by using the first user plane network element may be simulated. The method for establishing the session simulation establishing state by using the first user plane network element includes establishing a simulation session model by using a simulation computation path, and determining whether the session can be established successfully when the first user plane network element is used according to the simulation session model, specifically, determining whether a service flow of a session link corresponding to the first user plane network element is normal when the first user plane network element is used by using the simulation session model.
In an example embodiment of the present disclosure, simulating the session establishment state may include simulating the session establishment state being normal and simulating the session establishment state being abnormal. The abnormal simulation session establishment state indicates that the session establishment is not successful when the first user plane network element is adopted according to the simulation session model, that is, when the first user plane network element is adopted according to the simulation session model, the service flow of the session link corresponding to the first user plane network element 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 state is normal, it indicates that the first user plane network element has been repaired, and when a session is performed through the first user plane network element, a service flow thereof may also run normally, and at this time, a 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 to S220, a simulated session establishment state simulating establishment of a session by using the first user plane network element may be obtained, and 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, a second enabling parameter corresponding to a user plane network element switching policy may be obtained, the second enabling parameter is adjusted to be a first enabling parameter, and a session management network element switches a session established on a second user plane to a first user plane network element according to the first enabling parameter. Referring to fig. 3, adjusting the second enabling parameter to be the first enabling parameter, and the session management network element switching the session established on the second user plane to the first user plane network element according to the first enabling parameter may include the following steps S310 to S320:
step S310, acquiring a second enabling parameter corresponding to the user plane network element switching strategy;
in an exemplary embodiment of the present disclosure, when it is determined through the above steps that the simulation session establishment state is normal, a second enabling parameter corresponding to the user plane network element handover policy may be obtained. The enabling parameter corresponding to the user plane network element switching policy may be used to indicate whether a session established on the second user plane needs to be switched 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 indicates that the session established on the second user plane does not need to be switched to the first user plane network element through the session management network element. It should be noted that, the specific form of the enabling parameter corresponding to the user plane network element handover policy is not particularly limited in this disclosure.
Step S320, 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.
In an example embodiment of the present disclosure, after the second enabling parameter corresponding to the user plane network element handover policy is obtained through the above steps, the second enabling parameter may be adjusted to the first enabling parameter. Specifically, the first enabling parameter indicates that a session established on the second user plane needs to be switched to the first user plane network element through the session management network element. And after adjusting the second enabling parameter corresponding to the user plane network element switching strategy to the first enabling parameter, switching the session established on the second user plane to the first user plane network element through the session management network element. It should be noted that, in the present disclosure, there is no particular limitation on a 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 network element 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 network element through the session management network element, when the simulated session establishment state is normal, the second enabling parameter disable may be adjusted to enable, and at this time, the session management network element may switch the session established on the second user plane to the first user plane network element.
Through the steps S310 to S320, the second enabling parameter corresponding to the user plane network element switching policy may be obtained, 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.
In an example embodiment of the present disclosure, a session management network element may obtain a first configuration parameter corresponding to a session establishment request, determine a first user plane network element used for switching a session according to the first configuration parameter, establish a session link according to the first user plane network element, and switch the session management network element to the session link corresponding to the first user plane network element through a session established by a second user plane network element. Referring to fig. 4, switching, by the session management network element, the session established by the second user plane network element to the session link corresponding to the first user plane network element may include the following steps S410 to S430:
step S410, a session management network element acquires a first configuration parameter corresponding to a session establishment request;
in an example embodiment of the present disclosure, after a failure of a first user plane network element, a session may be performed through a second user plane network element, and after the first user plane network element is recovered, a session management network element may obtain a first configuration parameter corresponding to a session establishment request. The first configuration parameter corresponding to the session establishment request may be used to indicate a first user plane network element to be used when the session is established. 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), and the like. It should be noted that, the specific content of the first configuration parameter corresponding to the session establishment request is not particularly limited in this disclosure.
Step S420, determining a first user plane network element adopted by the session switching according to the first configuration parameter, and establishing a 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 for establishing the session may be determined according to the first configuration parameter. Specifically, the first configuration parameter may be used to indicate a first user plane network element to be used for establishing a session, and after the first configuration parameter is obtained, a user plane network element corresponding to the first configuration parameter may be searched for, and the user plane network element is determined as the first user plane network element. It should be noted that, the present disclosure is not limited specifically to the specific manner of determining the first user plane network element used for establishing the session according to the first configuration parameter.
In an example embodiment of the present disclosure, after determining the first user plane network element to be used for switching the session through the above steps, the 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 is not limited specifically to the specific manner of establishing the session link according to the first user plane network element.
Step S430, 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.
In an example embodiment of the present disclosure, after the session link is established according to the first user plane network element through the above steps, at this time, the session management network element may be switched to the session link corresponding to the first user plane network element through the session established by the second user plane network element. Specifically, the establishment of the session link according to the first user plane network element may be used to indicate that the first user plane network element has recovered and can already perform a session through the first user plane network element, and at this time, the session established through the second user plane network element may be directly switched to the session link established according to the first user plane network element. It should be noted that, in the present disclosure, a specific manner of switching a session established by the session management network element through the second user plane network element to a session link corresponding to the first user plane network element is not particularly limited.
Through the above steps S410 to S430, 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, establish the session link according to the first user plane network element, and switch the session management network element to the session link corresponding to the first user plane network element through the session established by the second user plane network element.
In an example embodiment of the present disclosure, a second configuration parameter corresponding to a second user plane network element in a session management network element may be obtained, and the second configuration parameter in the session management network element is updated to the first configuration parameter, so that a session established through the second user plane network element is switched to a session link corresponding to the first user plane network element. Referring to fig. 5, updating the second configuration parameter in the session management network element to the first configuration parameter to switch the session established by the second user plane network element to the session link corresponding to the first user plane network element may include the following steps S510 to 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, a second configuration parameter corresponding to a second user plane network element in a session management network element may be obtained. Specifically, after the first user plane network element fails, a session may be established through the second user plane network element, the configuration parameter configured in the session management network element is the second configuration parameter corresponding to the second user plane network element, and at this time, the second configuration parameter corresponding to the second user plane network element may be obtained in the session management network element. It should be noted that, in the present disclosure, a specific manner of obtaining the second configuration parameter corresponding to the second user plane network element in the session management network element is not particularly limited.
Step S520, 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 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 used to indicate a user plane network element to be used by the session, and after the second configuration parameter in the session management network element is updated to the first configuration parameter, the session established by the second user plane network element may be switched to the session link corresponding to the first user plane network element. It should be noted that, the present disclosure is not limited specifically to the manner of updating the second configuration parameter in the session management network element to the first configuration parameter.
Through the above steps S510 to S520, 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 is updated to the first configuration parameter, so that the session established through the second user plane network element is switched to the session link corresponding to the first user plane network element.
In an example embodiment of the present disclosure, an attribute identifier corresponding to a session establishment request may be obtained, a session management network element corresponding to the session establishment request is determined according to the attribute identifier, and the session establishment request is sent to the session management network element through a terminal device. Referring to fig. 6, determining a session management network element corresponding to the session establishment request according to the home identifier may include the following steps S610 to S620:
step S610, obtaining the home identifier corresponding to the session establishment request, and determining the session management network element corresponding to the session establishment request according to the home identifier;
step S620, sending a session establishment request to the session management network element through the terminal device.
In an example embodiment of the present disclosure, an attribute identifier corresponding to the session establishment request may be obtained, and a session management network element corresponding to the session establishment request may be determined according to the attribute identifier. Specifically, the session establishment request may include DNN, and the DNN may include an attribute identifier. Wherein the home identification may be used 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, the home identifier corresponding to the session establishment request may be obtained from the DNN, and the session management network element in a certain area to be used may be determined according to the home identifier corresponding to the session establishment request.
It should be noted that, the present disclosure does not make any special limitation on the specific manner of determining the session management network element corresponding to the session establishment request according to the attribute identifier.
Through the above steps S610 to S620, the home 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 home identifier, and the session establishment request is sent to the session management network element through the terminal device.
In an exemplary embodiment of the disclosure, a terminal device (UE) may send a session establishment request to a base station (gNB), the base station then sends the session establishment request to an access and mobility Management network element (AMF), the access and mobility Management network element determines a corresponding session Management network element (SMF) according to a DNN corresponding to the session establishment request, the session Management network element obtains signed session authentication information from a same Data Management network element (UDM, Unified Data Management) and performs session authentication and authorization in a second user plane network element, the session Management network element determines a Policy Control network element (PCF, Policy Control Function) corresponding to the second user plane network element and obtains a Policy and charging Control Policy (PCC Policy) for a service Data stream from the Policy Control network element, the session Management network element sends 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 receiving the session response, and informing the base station of establishing the radio bearer by the access and mobility management network element, and establishing the radio bearer by the base station and the terminal equipment. When the session is established by using the second user plane network element, the session expectation policy may be adjusted to establish the session by using the first user plane network element, when the first user plane network element is recovered, the link management module may update the second configuration parameter in the session management network element to the first configuration parameter, and switch the session established by using the second user plane network element 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 to perform the session through the first user plane network element may include the following steps S701 to S708:
step S701, UE sends a session establishment request to gNB; step S702, the gNB sends the session establishment request to the AMF again; step S703, AMF determines the corresponding SMF; step S704, SMF carries out session authentication and authorization in UPF; step S705, SMF determines corresponding PCF and acquires PCC strategy; step S706, SMF sends session establishment information and PCC strategy to UPF; step S707, SMF sends session establishment information to AMF, and receives session response; step S708, the AMF notifies the gNB to establish a radio bearer; step S709, the UE establishes a radio bearer with the gNB; step S710, updating the second configuration parameter in the session management network element to the first configuration parameter; step S711, the session established through the second user plane network element is switched to the session link corresponding to the first user plane network element.
In an example embodiment of the present disclosure, a network monitoring module, a database module, an intelligent routing module, and a link management module may be provided. Specifically, the network monitoring module is configured to monitor a forwarding condition of a service flow, and when a session is established by using a second user plane network element, a session expectation policy may be adjusted to establish the session by using a first user plane network element; the database module can be used for storing the configuration parameters corresponding to the user plane network element; the intelligent route calculation module can be used for acquiring a simulation session establishment state for simulating the establishment of a session by adopting a first user plane network element, and adjusting a second enabling parameter corresponding to a user plane network element switching strategy to be a first enabling parameter when the simulation session establishment state is normal; the link management module is used for updating the second configuration parameter in the session management network element into the first configuration parameter. It should be noted that, the present embodiment is not limited to the specific functions of the modules in implementing the present disclosure.
In the network element switching method provided in an embodiment of the present disclosure, when a first user plane network element fails, a session establishment request is sent to a session management network element through a terminal device, a session is established by using a second user plane network element, and when the first user plane network element recovers, the session management network element switches a session established on the second user plane to the first user plane network element, so as to perform a session through the first user plane network element. By the embodiment of the disclosure, after the first user plane network element is repaired, the currently used second user plane network element can be switched to the first user plane network element, and the session can also be automatically switched, so that the flow interruption is avoided, the session does not need to be reestablished, and the requirement of the user on the flow stability is ensured, thereby improving the use efficiency of the user, avoiding the user from initiating complaints, and ensuring the trust of the user on the system.
It is noted that the above-mentioned figures are merely schematic illustrations of processes involved in methods according to exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
In addition, in an exemplary embodiment of the present disclosure, a network element switching apparatus is also provided. Referring to fig. 8, a network element switching apparatus 800 includes: a session setup module 810 and a session handoff module 820.
The session establishing module is used for sending a session establishing request to the session management network element through the terminal equipment when the first user plane network element fails, and establishing a session by adopting the second user plane network element; and the session switching module is used for switching 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 is recovered, so as to carry out the session through the first user plane network element.
In an exemplary embodiment of the present disclosure, based on the foregoing scheme, after establishing a session with the second user plane network element, the apparatus further includes: and the expected strategy adjusting unit is used for adjusting the conversation expected strategy to adopt the first user plane network element to establish the conversation.
In an exemplary embodiment of the present disclosure, based on the foregoing scheme, 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 apparatus further includes: a simulated session establishment state acquisition unit, configured to acquire a simulated session establishment state that simulates establishment of a session using a first user plane network element; and the normal state processing unit is used for switching the session established on the second user plane to the first user plane network element by the session management network element when the simulated session establishment state is normal.
In an exemplary embodiment of the present disclosure, based on the foregoing scheme, the session management network element switches the session established on the second user plane to the first user plane network element, and the apparatus further includes: a second enabling parameter obtaining unit, configured to obtain a second enabling parameter corresponding to the user plane network element switching policy; 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 exemplary embodiment of the present disclosure, based on the foregoing scheme, the session management network element switches the session established on the second user plane to the first user plane network element, and the apparatus further includes: a first configuration parameter obtaining unit, configured to obtain, by the session management network element, a first configuration parameter corresponding to the session establishment request; a session link establishing unit, configured to determine, according to the first configuration parameter, a first user plane network element used for switching sessions, and establish a session link according to the first user plane network element; and the session link switching unit is used for switching the session established by the session management network element 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 scheme, 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, and the apparatus further includes: a second configuration parameter obtaining unit, configured to obtain a second configuration parameter corresponding to a second user plane network element in the session management network element; and the second configuration parameter updating unit is used for updating the second configuration parameter in the session management network element into the first configuration parameter so as to switch the session established by the second user plane network element into the session link corresponding to the first user plane network element.
In an exemplary embodiment of the present disclosure, based on the foregoing scheme, the apparatus further includes: an attribute identifier obtaining unit, configured to obtain an attribute identifier corresponding to the session establishment request, and determine a session management network element corresponding to the session establishment request according to the attribute identifier; and the session establishment request sending unit is used for sending a session establishment request to the session management network element through the terminal equipment.
As each functional module of the network element switching apparatus in the exemplary embodiment of the present disclosure corresponds to the step of the exemplary embodiment of the network element switching method, please refer to the above-mentioned embodiment of the network element switching method in the present disclosure for details that are not disclosed in the embodiment of the apparatus of the present disclosure.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
In addition, in an exemplary embodiment of the present disclosure, an electronic device capable of implementing the network element switching method is also provided.
As will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method or program product. Accordingly, various aspects of the present disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
An electronic device 900 according to such an embodiment of the disclosure is described below with reference to fig. 9. The electronic device 900 shown in fig. 9 is only an example and should not bring any limitations to the functionality or scope of use of the embodiments of the present disclosure.
As shown in fig. 9, the electronic device 900 is embodied in the form of a general purpose computing device. Components of electronic device 900 may include, but are not limited to: the at least one processing unit 910, the at least one storage unit 920, a bus 930 connecting different system components (including the storage unit 920 and the processing unit 910), and a display unit 940.
Where the storage unit stores program code, the program code may be executed by the processing unit 910 to cause the processing unit 910 to perform the steps according to various exemplary embodiments of the present disclosure described in the above-mentioned "exemplary methods" section of this specification. For example, the processing unit 910 may execute step S110 shown in fig. 1, when a first user plane network element fails, sending a session establishment request to a session management network element through a terminal device, and establishing a session with a second user plane network element; 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 perform a session through the first user plane network element.
The storage unit 920 may include readable media in the form of volatile memory units, such as a random access memory unit (RAM)921 and/or a cache memory unit 922, and may further include a read only memory unit (ROM) 923.
The electronic device 900 may also communicate with one or more external devices 970 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 900, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 900 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interface 950. Also, the electronic device 900 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet) via the network adapter 960. As shown, the network adapter 960 communicates with the other modules of the electronic device 900 via the bus 930. It should be appreciated that although not shown, other hardware and/or software modules may be used in conjunction with the 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 systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, various aspects of the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps according to various exemplary embodiments of the disclosure described in the above-mentioned "exemplary methods" section of this specification, when the program product is run on the terminal device.
A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection 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 carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. 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. In the case of 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 (e.g., through the internet using an internet service provider).
Furthermore, the above-described figures are merely schematic illustrations of processes included in methods according to exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A method for network element handover, the method comprising:
when the first user plane network element has a fault, sending a session establishment request to a session management network element through terminal equipment, and establishing a session by adopting a second user plane network element;
and when the first user plane network element is recovered, the session management network element switches the session established on the second user plane to the first user plane network element so as to carry out the session through the first user plane network element.
2. The method of claim 1, wherein after the establishing a session with the second user plane network element, the method further comprises:
the session expectation policy is adjusted to establish the session with the first user plane network element.
3. The method of claim 1, wherein the switching, by the session management network element, the session established on the second user plane to the first user plane network element when the first user plane network element is recovered comprises:
acquiring a simulation session establishment state for simulating the establishment of a session by using a first user plane network element;
and 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.
4. The method of claim 3, wherein the step of the session management network element handing over the session established on the second user plane to the first user plane network element comprises:
acquiring a second enabling parameter corresponding to the user plane network element switching strategy;
and adjusting the second enabling parameter to be a first enabling parameter, and switching the session established on the second user plane to the first user plane network element by the session management network element according to the first enabling parameter.
5. The method of claim 3, wherein the step of the session management network element handing over the session established on the second user plane to the first user plane network element comprises:
the session management network element acquires a first configuration parameter corresponding to the session establishment request;
determining a first user plane network element adopted for switching the session according to the first configuration parameter, and establishing a session link according to the first user plane network element;
and the session management network element is switched to a session link corresponding to the first user plane network element through the session established by the second user plane network element.
6. The method of claim 5, wherein the switching, by the session management network element, the session established by the second user plane network element to the session link corresponding to the first user plane network element comprises:
acquiring a second configuration parameter corresponding to the second user plane network element in the session management network element;
and updating the second configuration parameter in the session management network element to the first configuration parameter so as to switch the session established by the second user plane network element to the session link corresponding to the first user plane network element.
7. The method of claim 1, wherein sending, by the terminal device, the session establishment request to the session management network element comprises:
acquiring an owner identifier corresponding to the session establishment request, and determining a session management network element corresponding to the session establishment request according to the owner identifier;
and sending a session establishment request to the session management network element through the terminal equipment.
8. An apparatus for network element switching, the apparatus comprising:
the session establishing module is used for sending a session establishing request to the session management network element through the terminal equipment when the first user plane network element fails, and establishing a session by adopting a second user plane network element;
and a session switching module, configured to switch, by the session management network element, the session established on the second user plane to the first user plane network element when the first user plane network element is recovered, so as to perform a session through the first user plane network element.
9. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
10. An electronic device, comprising:
one or more processors; and
memory for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the method of any of claims 1-7.
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| CN202111648802.XA CN114302453A (en) | 2021-12-30 | 2021-12-30 | Network element switching method and device, storage medium and electronic equipment |
| PCT/CN2022/141549 WO2023125307A1 (en) | 2021-12-30 | 2022-12-23 | Network element switching method and apparatus, and storage medium and electronic device |
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