CN109729505B - Service processing method and network equipment - Google Patents
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Abstract
The invention discloses a service processing method and network equipment, wherein the method comprises the following steps: the access and mobility management network element sends a request for subscribing the service information of the session management network element to a network function storage network element in the communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system; and the access and mobility management network element receives the service information from the network function storage network element so as to control the terminal equipment and the base station connected with the session management network element to release the session established with the session management network element or reestablish the session with the session management network element through the service information.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a service processing method and a network device.
Background
With the continuous development of communication technology and the increasing traffic demand of user terminals, the architecture of wireless communication systems is also continuously updated. For example, in a fifth generation mobile communication network, a servitization architecture is used, as shown in fig. 1.
In The architecture, an Access Control and mobility Management Function (AMF) entity is configured to receive indication information sent by a Session Management Function (SMF) entity, organize a corresponding NAS to a user terminal, notify a base station to establish user plane information, and pass response information of The terminal and The base station through to The SMF entity.
As can be seen from the above processing procedure, when the state of the ue in the established session changes, the SMF entity may learn the change of the ue and perform corresponding processing on the session, but if the state of the SMF entity changes, for example, the SMF entity fails, in the core network architecture shown in fig. 1, the state change of the SMF entity has no way to notify the AMF entity, so that the corresponding session to the ue is not available, the usage of the ue is affected, and precious air interface resources are wasted.
Disclosure of Invention
The invention provides a service processing method and network equipment, which are used for solving the technical problems that the use of a user terminal is influenced and resources are wasted when an SMF entity is subjected to state change in the prior art.
A first aspect of the present invention provides a method for processing a service, where the method includes:
the access and mobility management network element sends a request for subscribing the service information of the session management network element to a network function storage network element in the communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
and the access and mobility management network element receives the service information from the network function storage network element so as to control the terminal equipment and the base station connected with the session management network element to release the session established with the session management network element or reestablish the session with the session management network element through the service information.
In a possible implementation, the service information includes the service list, and after the access and mobility management network element receives the service information from the network function storage network element, the method further includes:
and the access and mobility management network element updates an original service list which is stored in the access and mobility management network element and corresponds to the session management network element according to the service list.
In a possible implementation, the service information includes the service status, and after the access and mobility management element receives the service information from the network function repository element, the method further includes:
the access and mobility management network element determines that the service state represents that the session management network element has capacity change; wherein the capacity change is a capacity increase or a capacity decrease;
the access and mobility management network element marks the service state of the session management network element as a state with capacity change, and adjusts the selection weight value of the session management network element; the size of the selection weight value is in direct proportion to the probability of selecting the session management network element from the plurality of session management network elements when the terminal equipment is accessed.
In a possible embodiment, the adjusting the selection weight value of the session management network element includes:
when the capacity change is the capacity increase, the access and mobility management network element increases the weight value of the session management network element, and when the capacity change is the capacity decrease, the access and mobility management network element decreases the weight value of the session management network element.
In a possible implementation, the service information includes the service status, and after the access and mobility management element receives the service information from the network function repository element, the method further includes:
the access and mobility management network element determines that the service state represents that the session management network element fails;
and the access and mobility management network element marks the service state of the session management network element as an unavailable state, and sets the selection weight value of the session management network element as a value corresponding to the unavailable state.
In a possible embodiment, the method further comprises:
the access and mobility management network element determines that the service states of the N session management network elements corresponding to the target terminal equipment are all fault states; the target terminal equipment is terminal equipment connected with the session management network element, and N is a positive integer;
the access and mobility management network element initiates a de-registration process of the terminal equipment to a base station;
and the access and mobility management network element informs the base station to release the N2 connection between the access and mobility management network element and the context of the terminal equipment.
In a possible embodiment, the method further comprises:
the access and mobility management network element determines that the service states of M session management network elements in N session management network elements corresponding to the target terminal equipment are fault states; the target terminal device is a terminal device connected with the session management network element, N, M is a positive integer, and M is smaller than N;
the access and mobility management network element determines to initiate a session release process to the terminal equipment to a base station according to a pre-stored strategy; wherein the session is a session between the terminal device and the M session management network elements.
In a possible embodiment, the method further comprises:
the access and mobility management network element determines that the service states of M session management network elements in N session management network elements corresponding to the target terminal equipment are fault states; the target terminal device is a terminal device connected with the session management network element, N, M is a positive integer, and M is smaller than N;
the access and mobility management network element determines to initiate a session reestablishment process for the terminal equipment to a base station according to a prestored strategy; wherein the session is a session between the terminal device and the M session management network elements.
A second aspect of the present invention provides a service processing method, where the method includes:
a network function storage network element receives a request for subscribing the service information of a session management network element, which is sent by an access and mobility management network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
the network function storage element sends the service information to the access and mobility management element based on the request.
In a possible embodiment, before the network function storage element sends the service information to the access and mobility management element, the method further includes:
and the network function storage network element determines that the service list and/or the service state of the session management network element are changed.
In a possible implementation manner, the service state includes a capacity state of the session management network element, and the sending, by the network function storage network element, the service information to the access and mobility management network element includes:
the network function storage network element determines whether the variation of the capacity state reaches a preset threshold and/or whether a time interval between the current time and the last time of sending the service information to the access and mobility management network element by the network function storage network element meets a preset duration;
if so, the network function storage network element sends the service information to the access and mobility management network element.
A third aspect of the present invention provides a network device, comprising:
a sending module, configured to send a request for subscribing to service information of a session management network element to a network function storage network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
a receiving module, configured to receive the service information from the network function storage network element, so as to control, through the service information, a terminal device and a base station connected to the session management network element to release a session established with the session management network element or reestablish the session with the session management network element.
In a possible implementation manner, the service information includes the service list, and the network device further includes an updating module, where the updating module is specifically configured to:
and updating an original service list which is stored in the access and mobility management network element and corresponds to the session management network element according to the service list.
In a possible implementation manner, the service information includes the service status, and the network device further includes an adjusting module, where the adjusting module is specifically configured to:
determining that the service state represents that the capacity of the session management network element changes; wherein the capacity change is a capacity increase or a capacity decrease;
marking the service state of the session management network element as a state with capacity change, and adjusting the selection weight value of the session management network element; the size of the selection weight value is in direct proportion to the probability of selecting the session management network element from the plurality of session management network elements when the terminal equipment is accessed.
In a possible embodiment, the adjusting module is specifically configured to:
and when the capacity change is the capacity increase, the weight value of the session management network element is increased, and when the capacity change is the capacity decrease, the weight value of the session management network element is decreased.
In a possible implementation manner, the service information includes the service status, and the network device further includes a setting module, where the setting module is configured to:
determining that the service state represents that the session management network element fails;
and marking the service state of the session management network element as an unavailable state, and setting the selection weight value of the session management network element as a value corresponding to the unavailable state.
In a possible embodiment, the setting module is further configured to:
determining that the service states of the N session management network elements corresponding to the target terminal equipment are all fault states; the target terminal equipment is terminal equipment connected with the session management network element, and N is a positive integer;
initiating a de-registration process of the terminal equipment to a base station;
and informing the base station to release the N2 connection between the access and mobility management network element and the context of the terminal equipment.
In a possible implementation, the network device further includes a first determining module, where the first determining module is configured to:
determining service states of M session management network elements in N session management network elements corresponding to the target terminal equipment as a state with a fault; the target terminal device is a terminal device connected with the session management network element, N, M is a positive integer, and M is smaller than N;
determining to initiate a session release process for the terminal equipment to a base station according to a prestored strategy; wherein the session is a session between the terminal device and the M session management network elements.
In a possible implementation, the network device further includes a second determining module, where the second determining module is configured to:
determining service states of M session management network elements in N session management network elements corresponding to the target terminal equipment as a state with a fault; the target terminal device is a terminal device connected with the session management network element, N, M is a positive integer, and M is smaller than N;
determining to initiate a session reestablishment process for the terminal equipment to a base station according to a prestored strategy; wherein the session is a session between the terminal device and the M session management network elements.
A fourth aspect of the present invention provides a network device, comprising:
a receiving module, configured to receive a request for subscribing to service information of a session management network element, where the request is sent by an access and mobility management network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
a sending module, configured to send the service information to the access and mobility management network element based on the request.
In a possible implementation, the network device further includes a determining module, where the determining module is specifically configured to:
determining that a service list and/or a service state of the session management network element changes.
In a possible implementation manner, the service state includes a capacity state of the session management network element, and the sending module is specifically configured to:
determining whether the variation of the capacity state reaches a preset threshold and/or whether a time interval between the current time and the last time of sending the service information to the access and mobility management network element by the network function storage network element meets a preset duration;
and if so, sending the service information to the access and mobility management network element.
The fifth aspect of the present invention provides a network device, including a processor, a transmitter and a receiver, wherein the receiver and the transmitter receive and transmit data under the control of the processor, the base station further includes a memory, the memory stores a preset program, the processor reads the program in the memory, and executes the following procedures according to the program:
the sender sends a request for subscribing the service information of the session management network element to a network function storage network element in the communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
the receiver receives the service information from the network function storage network element, so that the processor controls the terminal equipment and the base station connected with the session management network element to release the session established with the session management network element or reestablish the session with the session management network element through the service information.
A sixth aspect of the present invention provides a network device, including a processor, a transmitter, and a receiver, where the receiver and the transmitter receive and transmit data under the control of the processor, and the base station further includes a memory, where a preset program is stored in the memory, and the processor reads the program in the memory, and executes the following procedures according to the program:
the receiver receives a request for subscribing the service information of the session management network element, which is sent by an access and mobility management network element in the communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
the processor determines to send the service information to the access and mobility management network element based on the request, and sends the service information to the access and mobility management network element through the sender.
The technical scheme in the embodiment of the invention has the following beneficial effects:
an access and mobility management network element firstly sends a request for subscribing service information of a session management network element to a network function storage network element in a communication system, wherein the service information comprises a service list and/or a service state, the session management network element is a session management network element which performs service interaction with the access and mobility management network element in a plurality of session management network elements in the communication system, and when the service information of the session management network element changes, the access and mobility management network element can receive the service information from the network function storage network element so as to control a terminal device and a base station connected with the session management network element to release a session established with the session management network element or re-establish the session with the session management network element according to the service information, so that the access and mobility management network element can obtain the service information of the session management network element in time, therefore, when the state of the session management network element changes, the access and mobility management network element can process the corresponding session in time, for example, the session is released or reestablished, so that the use experience of the user terminal is improved, and the waste of air interface resources can be reduced.
Drawings
FIG. 1 is a block diagram of a 5G service architecture in the prior art;
fig. 2 is a flowchart of a service processing method provided in an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating six specific processing manners of processing by the AMF entity according to the service information in an embodiment of the present invention;
fig. 4 is a functional block diagram of a network device provided in an embodiment of the present invention;
fig. 5 is another block diagram of a network device according to an embodiment of the present invention;
fig. 6 is another functional block diagram of a network device provided in an embodiment of the present invention;
fig. 7 is another block diagram of a network device according to an embodiment of the present invention.
Detailed Description
The invention provides a service processing method and network equipment, which are used for solving the technical problems that the use of a user terminal is influenced and resources are wasted when an SMF entity is subjected to state change in the prior art.
In order to solve the technical problems, the general idea of the invention is as follows:
an access and mobility management network element firstly sends a request for subscribing service information of a session management network element to a network function storage network element in a communication system, wherein the service information comprises a service list and/or a service state, the session management network element is a session management network element which performs service interaction with the access and mobility management network element in a plurality of session management network elements in the communication system, and when the service information of the session management network element changes, the access and mobility management network element can receive the service information from the network function storage network element so as to control a terminal device and a base station connected with the session management network element to release a session established with the session management network element or re-establish the session with the session management network element according to the service information, so that the access and mobility management network element can obtain the service information of the session management network element in time, therefore, when the state of the session management network element changes, the access and mobility management network element can process the corresponding session in time, for example, the session is released or reestablished, so that the use experience of the user terminal is improved, and the waste of air interface resources can be reduced.
In order to better understand the technical solutions of the present invention, the following detailed descriptions of the technical solutions of the present invention are provided with the accompanying drawings and the specific embodiments, and it should be understood that the specific features of the embodiments and the examples of the present invention are the detailed descriptions of the technical solutions of the present invention, and are not limitations of the technical solutions of the present invention, and the technical features of the embodiments and the examples of the present invention can be combined with each other without conflict.
The service processing method provided by the embodiment of the present invention can be applied to the service architecture shown in fig. 1, and various functional entities of the service architecture are introduced below.
Radio Access Network (RAN): the RAN is connected to a User Plane Function (UPF) entity through a User Plane interface N3, and is configured to transmit data of a User Equipment (UE); the RAN establishes a control plane signaling connection with the AMF entity through a control plane interface N2, so as to implement functions such as radio access bearer control.
An AMF entity: the terminal equipment authentication method mainly takes charge of functions of terminal equipment authentication, terminal equipment mobility management, SMF entity selection and the like; as an anchor point for the N1 and N2 signaling connections and provides routing of N1 and N2 Session Management (SM) messages for the SMF entity; and maintaining and managing the state information of the terminal equipment. The AMF entity provides a Namf serviced interface to the outside, which is denoted by a Namf identifier in fig. 1.
SMF entity: for session management including establishment, modification and release of sessions, allocation and management of IP addresses of UEs, selection and control of UPF entities, and configuring traffic steering policies for user plane functions to implement routing of data to appropriate destinations. The method comprises the following steps of interaction between SMF entity support and a Policy Control Function (PCF), a Control Function of supporting Policy execution and Quality of Service (QoS), a termination Function of SM NAS information, generation of N2 SM information related to an access network, sending the information to the access network through AMF, determining a session and Service continuity mode of UE session connection, a Function of supporting roaming and the like. The SMF entity provides an Nsmf serviced interface to the outside, which is represented in fig. 1 by an Nsmf identifier.
UPF entity: the system is connected with the SMF entity through an N4 interface, is an anchor point of Intra-RAT mobility, and is responsible for filtering data messages of terminal equipment, transmitting or forwarding data, controlling rate, generating charging information and the like.
Network Function storage Function (NRF) entity: for service discovery, a Network Function (NEF) discovery request is received from a NEF entity, and information of the discovered NEF entity is provided to the NEF entity. The NRF entity provides an nrrf-servitization interface to the outside, which is denoted by the nrrf label in fig. 1. The NEF entity provides an external Nnef-serviced interface, represented in fig. 1 by the Nnef designation.
The PCF entity: for generating and storing Policy Control and Charging (PCC) rules related to session management and providing them to the SMF entity, and for generating and providing Policy information related to mobility management to the AMF entity. The PCF entity provides an Npcf-serviced interface to the outside, which is denoted by an Npcf identifier in fig. 1.
Data Network (DN): and the UPF entity is connected with the N6 interface and is used for generating downlink data to be sent to the terminal equipment and receiving uplink data sent by the terminal equipment.
Authentication Server Function (AUSF) entity: for obtaining a security authentication vector for performing a security authentication between the UE and the network. The AUSF entity provides a Nausf servization interface for the outside, which is represented by a Nausf identifier in fig. 1.
User Data Management (UDM) entity: the system is used for storing the subscription information related to the user and providing the subscription-related parameter information for the corresponding entity. The UDM entity provides a numm-serviced interface to the outside, represented in fig. 1 by the numm designation.
Application Function (AF) entity: the interface for providing Naf services to the outside is denoted by Naf identifier in fig. 1.
Referring to fig. 2, a flowchart of a service processing method according to an embodiment of the present invention is shown, where the access and mobility management network element may be an AMF entity in the architecture shown in fig. 1, the network function storage network element may be an NRF entity in fig. 1, and the session management network element may be an SMF entity in fig. 1, which may change with the evolution of the network, and the network element may also be other names. In the following description, the method is applied to the architecture shown in fig. 1 as an example. The method comprises the following steps:
step 201: the AMF entity sends a request for subscribing the service information of the SMF entity to an NRF entity in the communication system; the service information includes a service list and/or a service state, and the SMF entity is an SMF entity that performs service interaction with the AMF entity among a plurality of SMF entities in the communication system.
In the architecture shown in fig. 1, each functional entity, for example, an AMF entity, an SMF entity, an AF entity, etc., publishes a provided service function by registering a service with an NRF. Then, each functional entity uses the discovery service provided by the NRF to obtain the functional entity that needs the service, that is, the API of the discovery service of the NRF is used to obtain the information of the functional entity of the service through the HTTP protocol. The SMF entity is obtained by the AMF entity through the NRF discovery service, and the SMF entity may be one or multiple, and if the SMF entity is multiple, the processing procedure of each SMF entity is the same, so in the embodiment of the present invention, only the SMF entity is used as one for description. After obtaining the information of the SMF entity, AMF carries out service interaction with the SMF entity, if the service state and the service list of the SMF entity are not subscribed to the NRF entity by the AMF entity, the AMF initiates subscription to the NRF entity, and subscribes the service running state and the service list of the SMF entity.
Step 202: the NRF entity receives a request for subscribing the service information of the SMF entity sent by an AMF entity in a communication system, and sends the service information to the AMF entity based on the request.
In a specific implementation process, the NRF entity may send the service information of the SMF entity to the AMF entity at a certain time interval, for example, the NRF entity sends the service information to the AMF entity every five minutes, that is, the NRF entity sends the service information to the AMF entity regardless of whether the service information of the SMF entity changes in the five minutes, and when the service information of the SMF entity does not change from the service information sent last time, the procedure of sending the service information this time wastes resources between the NRF entity and the AMF entity, so in order to save resources, before performing step 202, the method further includes:
the NRF entity determines that a service list and/or a service state of the SMF entity is changed.
In this way, the NRF entity may send the service information of the SMF entity to the AMF entity only when the service information of the SMF entity changes, for example, a service list of the SMF entity changes, or a part of functions of the SMF entity fails, or the SMF entity has capacity change due to service orchestration. Since the SMF entity fails or recovers to a normal state change and a service list change may directly result in whether the session established by the SMF entity can be used, the NRF entity may notify the AMF in time after the SMF entity has the above change.
Of course, the service information of the SMF entity may change rapidly due to factors such as network instability, and the NRF entity needs to frequently send the service information to the AMF entity, which increases the load of the NRF entity and the AMF entity. In view of this, after the service information of the SMF entity is changed, a guard time interval may be set for the procedure of the NRF entity transmitting the service information. For example, when the service list of the SMF entity changes, the NRF entity further needs to determine whether a time interval between the time of the change and the time when the NRF entity last sends the service information to the AMF entity is greater than or equal to a preset guard time interval, where the guard time interval may be 5S or 10S. If the protection time interval is not reached, the NRF entity does not send the changed service list to the AMF entity and continues to wait, and when the NRF entity judges that the protection time interval is reached, the NRF entity sends the changed service list information to the AMF entity.
Further, in this embodiment of the present invention, the service status includes a capacity status of the session management network element, and step 202 may further include the following steps:
the NRF entity determines whether the variation of the capacity state reaches a preset threshold and/or whether a time interval between the current time and the time when the NRF entity sends the service information to the AMF entity last time meets a preset duration;
if so, the NRF entity sends the service information to the AMF entity.
In a specific implementation process, in order to avoid that the NRF entity frequently sends the service information to the AMF entity, the change of the capacity state of the SMF entity may be divided into different grading levels, and the NRF entity uses a guard time interval timer to record an interval of sending the service information each time.
Specifically, when the NRF entity determines that the variation amount of the capacity state of the SMF entity causes the change of the classification level and the guard interval timer is expired, the NRF entity transmits the corresponding service information to the AMF entity. When the NRF entity determines that the variation in the capacity state of the SMF entity does not cause a change in the classification level, it is not necessary to notify the AMF entity. When the NRF entity judges that the variation of the capacity state of the SMF entity causes the variation of the grading level, but the protection time interval timer is not overtime, waiting for the overtime of the protection time interval timer, after the overtime of the protection time interval timer, checking whether the variation of the capacity state of the SMF entity at the current moment is different from the grading level sent last time, if so, notifying the AMF entity, and if not, processing.
Step 203: and the AMF entity receives the service information from the NRF entity so as to control the terminal equipment and the base station connected with the SMF entity to release the session established with the SMF entity or reestablish the session with the SMF entity through the service information.
After receiving the service information of the SMF entity sent by the NRF entity, the AMF determines whether a session established by the SMF entity needs to be correspondingly processed according to the service information. In the embodiment of the present invention, the following six specific processing manners may be included, please refer to fig. 3, which is a schematic diagram of the six specific processing manners. The AMF entity can be processed in any one of the six specific processing modes at a certain time according to actual conditions.
In a first processing manner, the service information includes the service list, and after step 203, the method further includes:
and the AMF entity updates an original service list corresponding to the SMF entity, which is stored in the AMF entity, according to the service list.
In a specific implementation process, after the AMF entity learns that the service list of the SMF entity is changed, the AMF entity immediately updates the service list of the SMF entity stored in the storage unit, and discards the service list of the SMF entity that is no longer used.
In a second processing manner, the service information includes the service status, and after step 203, the method further includes:
the AMF entity determines that the service state represents that the capacity change of the session management network element occurs; wherein the capacity change is a capacity increase or a capacity decrease;
the AMF entity marks the service state of the SMF entity as a state with capacity change, and adjusts the selection weight value of the SMF entity; the selection weight value is proportional to the probability of selecting the SMF entity from the plurality of SMF entities when the terminal equipment is accessed.
In this embodiment of the present invention, the adjusting the selection weight value of the SMF entity includes:
when the capacity change is the capacity increase, the AMF entity increases the weight value of the SMF entity, and when the capacity change is the capacity decrease, the AMF entity decreases the weight value of the SMF entity.
In a specific implementation process, when the AMF entity learns that the capacity of the SMF is reduced, the capacity change may be caused by service orchestration or partial failure of the SMF, and is not limited herein. Then, the AMF entity marks the SMF entity, reduces the weight value of the SMF entity, and reduces the probability of selecting the SMF entity when selecting the SMF entity slice for subsequent user equipment access.
And when the AMF knows that the capacity of the SMF is increased, the AMF entity marks the SMF entity, the weight value of the SMF is increased, and the probability of selecting the SMF is increased when a subsequent user accesses and selects the SMF slice.
In a third processing manner, the service information includes the service status, and after step 203, the method further includes:
the AMF entity determines that the service state represents that the SMF entity fails;
and the AMF entity marks the service state of the SMF entity as an unavailable state, and sets the selection weight value of the SMF entity as a value corresponding to the unavailable state.
Thus, when the subsequent user equipment accesses and selects the SMF entity slice, the SMF entity slice is not selected
A fourth processing manner, after the step 203, the method further includes:
the AMF entity determines that the service state represents that the SMF entity fails;
the AMF entity marks the service state of the SMF entity as an unavailable state, and sets a selection weight value of the SMF entity as a value corresponding to the unavailable state;
the AMF entity determines that the service states of the N SMF entities corresponding to the target terminal equipment are all fault states; the target terminal equipment is terminal equipment connected with the SMF entity, and N is a positive integer;
the AMF entity initiates a de-registration process of the terminal equipment to a base station;
the AMF entity informs the base station to release the N2 connection with the AMF entity and to release the context with the terminal equipment.
In a specific implementation process, when the AMF entity learns that the SMF entity fails, the service status of the corresponding SMF entity is marked as unavailable, and the selection weight is the minimum or a value corresponding to the unavailable, for example, 0. Then, the AMF entity judges that: if all serving SMF entities of a certain UE having a session established with the SMF entity fail, the AMF entity initiates a de-registration procedure for which the reason is re-registration and releases the N2 connection with the SMF entity.
Fifth approach, after step 203, the method further comprises:
the AMF entity determines that the service state represents that the SMF entity fails;
the AMF entity marks the service state of the SMF entity as an unavailable state, and sets a selection weight value of the SMF entity as a value corresponding to the unavailable state;
the AMF entity determines that the service states of M SMF entities in the N SMF entities corresponding to the target terminal equipment are fault states; the target terminal device is a terminal device connected with the SMF entity, N, M is a positive integer, and M is smaller than N;
the AMF entity determines to initiate a session release process to the terminal equipment to a base station according to a pre-stored strategy; wherein the session is a session between the terminal device and the M SMF entities.
In a specific implementation process, when the AMF entity learns that the SMF entity fails, the service status of the corresponding SMF entity is marked as unavailable, and the selection weight is the minimum or a value corresponding to the unavailable, for example, 0. Then, the AMF entity judges that: if only a part of SMF entities in all service SMF entities of a certain UE establishing a Session with the SMF entity fail, the AMF entity sends a Session release command (Session releasecom) to the UE aiming at the failed Session according to a locally configured strategy, and triggers a corresponding Session release process.
Sixth approach, after step 203, the method further comprises:
the AMF entity determines that the service state represents that the SMF entity fails;
the AMF entity marks the service state of the SMF entity as an unavailable state, and sets a selection weight value of the SMF entity as a value corresponding to the unavailable state;
the AMF entity determines that the service states of M SMF entities in the N SMF entities corresponding to the target terminal equipment are fault states; the target terminal device is a terminal device connected with the SMF entity, N, M is a positive integer, and M is smaller than N;
the AMF entity determines to initiate a session reestablishment process for the terminal equipment to a base station according to a prestored strategy; wherein the session is a session between the terminal device and the M SMF entities.
In a specific implementation process, when the AMF entity learns that the SMF entity fails, the service status of the corresponding SMF entity is marked as unavailable, and the selection weight is the minimum or a value corresponding to the unavailable, for example, 0. Then, the AMF entity judges that: if only a part of SMF entities in all service SMF entities of a certain UE establishing a Session with the SMF entity have a fault, the AMF entity triggers a Session re-establishment command (Session re-establishment command) to the UE aiming at the fault Session according to a locally configured strategy, and further triggers a Session re-establishment process.
Through the technical scheme, when the service information of the session management network element changes, the access and mobility management network element can receive the service information from the network function storage network element, so that the terminal equipment and the base station connected with the session management network element are controlled to release the session established with the session management network element or reestablish the session with the session management network element according to the service information, and thus, the access and mobility management network element can timely acquire the service information of the session management network element, so that after the state of the session management network element changes, the access and mobility management network element can timely process the corresponding session, for example, the session is released or the session is reestablished, the use experience of a user terminal is improved, and the waste of air interface resources can be reduced.
A second aspect of the present invention provides a network device, where the network device may be an access and mobility management network element in a mobile communication system, such as a fourth Generation mobile communication technology (4G) network or a fifth Generation mobile communication technology (5G) network, for example, an AMF entity, and may also be another entity capable of implementing the function of the network element. Referring to fig. 4, a schematic structural diagram of a network device according to an embodiment of the present invention is shown, where the network device includes:
a sending module 401, configured to send a request for subscribing to service information of a session management network element to a network function storage network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
a receiving module 402, configured to receive the service information from the network function storage network element, so as to control, through the service information, a terminal device and a base station connected to the session management network element to release a session established with the session management network element or reestablish the session with the session management network element.
Since the network device provided in the second aspect of the present invention is proposed under the same concept as the service processing method provided in the first aspect of the present invention, various changes and specific embodiments performed by the access and mobility management network element in the service processing method in the foregoing embodiments of fig. 2 to 3 are also applicable to the network device of this embodiment, and through the foregoing detailed description of the service processing method, a person skilled in the art can clearly know the implementation process of the network device in this embodiment, so for the brevity of the description, detailed description is not repeated here.
A third aspect of the present invention provides a network device, where the network device may be an access and mobility management network element in a mobile communication system such as a fourth Generation mobile communication technology (4G) network or a fifth Generation mobile communication technology (5G) network, for example, may be an AMF entity, and certainly may be another entity capable of implementing the function of the network element. Fig. 5 is a block diagram of a network device according to an embodiment of the present invention. As shown in fig. 5, the network device includes a transmitter 501, a receiver 502, and a processor 503, wherein:
the sender 501 sends a request for subscribing to service information of a session management network element to a network function storage network element in a communication system under the control of the processor 503; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
the receiver 502 receives the service information from the network function storage element, so that the processor controls the terminal device and the base station connected to the session management element to release the session established with the session management element or reestablish the session with the session management element through the service information.
Optionally, the processor 503 may be a central processing unit, an Application Specific Integrated Circuit (ASIC), one or more Integrated circuits for controlling program execution, a hardware Circuit developed by using a Field Programmable Gate Array (FPGA), or a baseband processor.
Optionally, the processor 503 may include at least one processing core.
Optionally, the electronic device further includes a Memory, where the Memory may include a Read Only Memory (ROM), a Random Access Memory (RAM), and a disk Memory. The memory is used for storing data required by the processor 503 when running. The number of the memories is one or more.
Since the network device provided in the third aspect of the present invention is proposed under the same concept as the service processing method provided in the first aspect of the present invention, various changes and specific embodiments executed by the access and mobility management network element in the service processing method in the foregoing embodiments of fig. 2 to 3 are also applicable to the network device of this embodiment, and through the foregoing detailed description of the service processing method, a person skilled in the art can clearly know the implementation process of the network device in this embodiment, so for the brevity of the description, detailed description is not repeated here.
A fourth aspect of the present invention provides a network device, where the network device may be a session management network element in a mobile communication system, such as a fourth Generation mobile communication technology (4G) network or a fifth Generation mobile communication technology (5G) network, for example, an SMF entity, or other entities capable of implementing the functions of the network element. Referring to fig. 6, a schematic structural diagram of a network device according to an embodiment of the present invention is shown, where the network device includes:
a receiving module 601, configured to receive a request for subscribing to service information of a session management network element, where the request is sent by an access and mobility management network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
a sending module 602, configured to send the service information to the access and mobility management network element based on the request.
Since the network device provided in the fourth aspect of the present invention is proposed under the same concept as the service processing method provided in the first aspect of the present invention, various changes and specific embodiments executed by the session management network element in the service processing method in the foregoing embodiments of fig. 2 to 3 are also applicable to the network device of this embodiment, and through the foregoing detailed description of the service processing method, a person skilled in the art can clearly know the implementation process of the network device in this embodiment, so for the brevity of the description, detailed description is not repeated here.
A fifth aspect of the present invention provides a network device, where the network device may be a session management network element in a mobile communication system, such as a fourth Generation mobile communication technology (4G) network or a fifth Generation mobile communication technology (5G) network, for example, an SMF entity, or other entities capable of implementing the functions of the network element. Fig. 7 is a block diagram of a network device according to an embodiment of the present invention. As shown in fig. 7, the network device includes a transmitter 701, a receiver 702, and a processor 703, wherein:
the receiver 702 receives a request for subscribing to service information of a session management network element, which is sent by an access and mobility management network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
the processor 703 determines to send the service information to the access and mobility management network element based on the request, and sends the service information to the access and mobility management network element through the transmitter 701.
Optionally, the processor 703 may be specifically a central processing unit, an Application Specific Integrated Circuit (ASIC), one or more Integrated circuits for controlling program execution, a hardware Circuit developed by using a Field Programmable Gate Array (FPGA), or a baseband processor.
Optionally, the processor 703 may include at least one processing core.
Optionally, the electronic device further includes a Memory, where the Memory may include a Read Only Memory (ROM), a Random Access Memory (RAM), and a disk Memory. The memory is used for storing data required by the processor 703 in operation. The number of the memories is one or more.
Since the network device provided in the fifth aspect of the present invention is proposed under the same concept as the service processing method provided in the first aspect of the present invention, various changes and specific embodiments executed by the session management network element in the service processing method in the foregoing embodiments of fig. 2 to 3 are also applicable to the network device of this embodiment, and through the foregoing detailed description of the service processing method, a person skilled in the art can clearly know the implementation process of the network device in this embodiment, so for the brevity of the description, detailed description is not repeated here.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (22)
1. A method for processing a service, the method comprising:
the access and mobility management network element sends a request for subscribing the service information of the session management network element to a network function storage network element in the communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
and the access and mobility management network element receives the service information from the network function storage network element so as to control the terminal equipment and the base station connected with the session management network element to release the session established with the session management network element or reestablish the session with the session management network element through the service information.
2. The method of claim 1, wherein the service information comprises the list of services, and wherein after the access and mobility management network element receives the service information from the network function repository network element, the method further comprises:
and the access and mobility management network element updates an original service list which is stored in the access and mobility management network element and corresponds to the session management network element according to the service list.
3. The method according to claim 1 or 2, wherein the service information comprises the service status, and after the access and mobility management network element receives the service information from the network function repository network element, the method further comprises:
the access and mobility management network element determines that the service state represents that the session management network element has capacity change; wherein the capacity change is a capacity increase or a capacity decrease;
the access and mobility management network element marks the service state of the session management network element as a state with capacity change, and adjusts the selection weight value of the session management network element; the size of the selection weight value is in direct proportion to the probability of selecting the session management network element from the plurality of session management network elements when the terminal equipment is accessed.
4. The method of claim 3, wherein said adjusting the selection weight value of the session management network element comprises:
when the capacity change is the capacity increase, the access and mobility management network element increases the weight value of the session management network element, and when the capacity change is the capacity decrease, the access and mobility management network element decreases the weight value of the session management network element.
5. The method according to claim 1 or 2, wherein the service information comprises the service status, and after the access and mobility management network element receives the service information from the network function repository network element, the method further comprises:
the access and mobility management network element determines that the service state represents that the session management network element fails;
and the access and mobility management network element marks the service state of the session management network element as an unavailable state, and sets the selection weight value of the session management network element as a value corresponding to the unavailable state.
6. The method of claim 5, wherein the method further comprises:
the access and mobility management network element determines that the service states of the N session management network elements corresponding to the target terminal equipment are all fault states; the target terminal equipment is terminal equipment connected with the session management network element, and N is a positive integer;
the access and mobility management network element initiates a de-registration process of the terminal equipment to a base station;
and the access and mobility management network element informs the base station to release the N2 connection between the access and mobility management network element and the context of the terminal equipment.
7. The method of claim 5, wherein the method further comprises:
the access and mobility management network element determines that the service states of M session management network elements in N session management network elements corresponding to the target terminal equipment are fault states; the target terminal device is a terminal device connected with the session management network element, N, M is a positive integer, and M is smaller than N;
the access and mobility management network element determines to initiate a session release process to the terminal equipment to a base station according to a pre-stored strategy; wherein the session is a session between the terminal device and the M session management network elements.
8. The method of claim 5, wherein the method further comprises:
the access and mobility management network element determines that the service states of M session management network elements in N session management network elements corresponding to the target terminal equipment are fault states; the target terminal device is a terminal device connected with the session management network element, N, M is a positive integer, and M is smaller than N;
the access and mobility management network element determines to initiate a session reestablishment process for the terminal equipment to a base station according to a prestored strategy; wherein the session is a session between the terminal device and the M session management network elements.
9. A method for processing a service, the method comprising:
a network function storage network element receives a request for subscribing the service information of a session management network element, which is sent by an access and mobility management network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
the network function storage element sends the service information to the access and mobility management element based on the request.
10. The method of claim 9, wherein prior to the network function repository network element sending the service information to the access and mobility management network element, the method further comprises:
and the network function storage network element determines that the service list and/or the service state of the session management network element are changed.
11. The method of claim 10, wherein the service state comprises a capacity state of the session management network element, and wherein the network function repository network element sending the service information to the access and mobility management network element comprises:
the network function storage network element determines whether the variation of the capacity state reaches a preset threshold and/or whether a time interval between the current time and the last time of sending the service information to the access and mobility management network element by the network function storage network element meets a preset duration;
if so, the network function storage network element sends the service information to the access and mobility management network element.
12. A network device, comprising:
a sending module, configured to send a request for subscribing to service information of a session management network element to a network function storage network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with an access management network element and a mobility management network element in a plurality of session management network elements in the communication system;
a receiving module, configured to receive the service information from the network function storage network element, so as to control, through the service information, a terminal device and a base station connected to the session management network element to release a session established with the session management network element or reestablish the session with the session management network element.
13. The network device of claim 12, wherein the service information includes the service list, the network device further comprising an update module, the update module specifically configured to:
and updating an original service list which is stored in the access and mobility management network element and corresponds to the session management network element according to the service list.
14. The network device according to claim 12 or 13, wherein the service information includes the service status, the network device further comprising an adjustment module, the adjustment module being specifically configured to:
determining that the service state represents that the capacity of the session management network element changes; wherein the capacity change is a capacity increase or a capacity decrease;
marking the service state of the session management network element as a state with capacity change, and adjusting the selection weight value of the session management network element; the size of the selection weight value is in direct proportion to the probability of selecting the session management network element from the plurality of session management network elements when the terminal equipment is accessed.
15. The network device of claim 14, wherein the adjustment module is specifically configured to:
and when the capacity change is the capacity increase, the weight value of the session management network element is increased, and when the capacity change is the capacity decrease, the weight value of the session management network element is decreased.
16. The network device of claim 12 or 13, wherein the service information includes the service status, the network device further comprising a setup module to:
determining that the service state represents that the session management network element fails;
and marking the service state of the session management network element as an unavailable state, and setting the selection weight value of the session management network element as a value corresponding to the unavailable state.
17. The network device of claim 16, wherein the setup module is further to:
determining that the service states of the N session management network elements corresponding to the target terminal equipment are all fault states; the target terminal equipment is terminal equipment connected with the session management network element, and N is a positive integer;
initiating a de-registration process of the terminal equipment to a base station;
and informing the base station to release the N2 connection between the access and mobility management network element and the context of the terminal equipment.
18. The network device of claim 16, wherein the network device further comprises a first determination module to:
determining service states of M session management network elements in N session management network elements corresponding to the target terminal equipment as a state with a fault; the target terminal device is a terminal device connected with the session management network element, N, M is a positive integer, and M is smaller than N;
determining to initiate a session release process for the terminal equipment to a base station according to a prestored strategy; wherein the session is a session between the terminal device and the M session management network elements.
19. The network device of claim 16, wherein the network device further comprises a second determination module to:
determining service states of M session management network elements in N session management network elements corresponding to the target terminal equipment as a state with a fault; the target terminal device is a terminal device connected with the session management network element, N, M is a positive integer, and M is smaller than N;
determining to initiate a session reestablishment process for the terminal equipment to a base station according to a prestored strategy; wherein the session is a session between the terminal device and the M session management network elements.
20. A network device, comprising:
a receiving module, configured to receive a request for subscribing to service information of a session management network element, where the request is sent by an access and mobility management network element in a communication system; the service information comprises a service list and/or a service state, and the session management network element is a session management network element which performs service interaction with the access and mobility management network elements in a plurality of session management network elements in the communication system;
a sending module, configured to send the service information to the access and mobility management network element based on the request.
21. The network device of claim 20, wherein the network device further comprises a determination module, the determination module being specifically configured to:
determining that a service list and/or a service state of the session management network element changes.
22. The network device of claim 21, wherein the service status includes a capacity status of the session management network element, and the sending module is specifically configured to:
determining whether the variation of the capacity state reaches a preset threshold and/or whether a time interval between the current time and the last time of sending the service information to the access and mobility management network element by the network function storage network element meets a preset duration;
and if so, sending the service information to the access and mobility management network element.
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| CN110366276B (en) * | 2019-07-03 | 2022-04-12 | 中国联合网络通信集团有限公司 | Service architecture base station |
| CN112243243B (en) * | 2019-07-16 | 2024-03-26 | 中国电信股份有限公司 | Network slice implementation method, entity and system |
| CN112994918B (en) * | 2019-12-17 | 2022-05-31 | 华为技术有限公司 | Equipment management method and device |
| CN113163391A (en) * | 2020-01-22 | 2021-07-23 | 华为技术有限公司 | Communication method, device and system |
| CN112671567B (en) * | 2020-12-16 | 2023-02-21 | 中盈优创资讯科技有限公司 | 5G core network topology discovery method and device based on service interface |
| CN113382432B (en) * | 2021-08-13 | 2021-11-23 | 新华三技术有限公司 | 5G network service providing method, device and equipment |
| CN113766443B (en) * | 2021-10-20 | 2024-01-26 | 广东亿迅科技有限公司 | Method and system for processing massive 5G message session management |
| CN115243400B (en) * | 2022-08-04 | 2023-05-05 | 广州爱浦路网络技术有限公司 | Service session reconstruction method, device and network element |
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