CN105208606A - Method of redirection, node equipment and core network equipment - Google Patents
Method of redirection, node equipment and core network equipment Download PDFInfo
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Abstract
The embodiment of the invention discloses node equipment which is arranged between an access network equipment group and a core network equipment group and is connected to each equipment in the access network equipment group and the core network equipment group. The node equipment receives a service redirection request sent by the first core network equipment in the core network equipment group. In response to the traffic redirection request, second core network equipment capable of receiving the service is determined in the core network equipment group. A service reception request is sent to the second core network equipment. The service reception response from the second core network equipment is received, the completion of the redirection interaction between the node equipment and the second core network equipment is confirmed, and a confirmation message is sent to the first core network equipment. The embodiment of the present invention also discloses the core network equipment and a redirection method.
Description
Technical Field
The present invention relates to redirection technologies in the field of wireless communications, and in particular, to a redirection method, a node device, and a core network device.
Background
In the field of mobile communications, as the network scale is continuously enlarged, the more users switch among different wireless access networks, the higher the utilization rate and reliability of core network devices are required by the network, such as: the sudden event causes the telephone traffic load borne by a single core network device to increase rapidly, and the core network device has the function of balancing the spike effect; in addition, the core network equipment also has the capacity of balancing tidal traffic and the like, or the requirement of energy conservation is considered, the core network equipment sleeps the board card with low resource consumption in the core network equipment, when the traffic volume increases steeply, the core network equipment wakes up the sleeping board card, a mechanism is needed to ensure the continuity and the success rate of the new service in the process, and therefore the core network equipment pool grouping technology is provided.
In the existing implementation mechanism, a mesh connection mode is adopted between core network devices and access network devices, so that a reachable route exists between any one core network device and any one access network device. For example, fig. 1 is a schematic diagram of a networking mode of a core network device and an access network device based on pool grouping in the prior art, and referring to fig. 1, two core network devices 111 are provided in a core network device group 11, three access network devices 121 are provided in an access network device group 12, and any one of the core network devices 111 is connected to any one of the access network devices 121. Then, in the redirection process, twelve instructions are needed to complete the redirection process by these five devices, and in an actual network, many core network devices and access network devices are deployed, so when signaling interaction is performed between these devices, the number of signaling is quite large, and a large amount of system resources are occupied.
Therefore, the technical problem that the system resource consumption is large due to large network signaling overhead exists in the prior art.
Disclosure of Invention
In view of this, embodiments of the present invention are expected to provide a redirection method, a node device, and a core network device, so as to reduce network signaling overhead and save system resources.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a node device, which is disposed between an access network device group and a core network device group, and is respectively connected to each device in the access network device group and the core network device group; the node device includes: a first transceiver and a first processor; the first transceiver is configured to receive a service redirection request sent by a first core network device in the core network device group; the core network device group is also used for sending a service receiving request to a second core network device which can receive the service in the core network device group; receiving a service acceptance response from the second core network device, confirming that the redirection interaction with the second core network device is completed, and sending a confirmation message to the first core network device; the first processor is configured to determine, in the core network device group, the second core network device in response to the service redirection request.
Further, the first processor is specifically configured to respond to the service redirection request, and obtain a load state of each core network device in the core network device group; determining the second core network device in the core network device group based on the load status.
Further, the first transceiver is further configured to receive a processing capability recovery notification from the first core network device, so that the node device redirects the service from the second core network device to the first core network device.
In a second aspect, an embodiment of the present invention provides a core network device, where the core network device is connected to a node device; the core network device includes: a second transceiver and a second processor; wherein the second processor is configured to determine that a traffic load exceeds a processing threshold; the second transceiver is configured to send a service redirection request to the node device; and the node device is further configured to receive a confirmation message from the node device, confirming that the node device has completed redirection interaction with another core network device.
Further, the second transceiver is further configured to send a processing capability recovery notification to the node device after the processing capability of the core network device to which the second transceiver belongs is recovered, so that the node device redirects the service from the another core network device to the core network device to which the second transceiver belongs.
In a third aspect, an embodiment of the present invention provides a core network device, where the core network device is connected to a node device; the core network device includes: a third transceiver and a third processor; the third transceiver is configured to receive a service acceptance request sent by the node device, send a service acceptance response to the node device, and after receiving the service acceptance response, confirm that the node device has completed redirection interaction with the core network device, and send a confirmation message to another core network device.
In a fourth aspect, an embodiment of the present invention provides a redirection method, which is applied to a node device, where the node device is disposed between an access network device group and a core network device group, and is respectively connected to each device in the access network device group and the core network device group; the method comprises the following steps: receiving a service redirection request sent by first core network equipment in a core network equipment group; responding to the service redirection request, and determining second core network equipment which can accept the service in the core network equipment group; sending a service acceptance request to the second core network equipment; and receiving a service acceptance response from the second core network device, confirming that the node device completes redirection interaction with the second core network device, and sending a confirmation message to the first core network device.
Further, the determining, in the core network device group, a second core network device that can accept the service includes: acquiring the load state of each core network device in the core network device group; determining the second core network device in the core network device group based on the load status.
Further, after the sending the acknowledgement message to the first core network device, the method further includes: and receiving a processing capability recovery notification sent by the first core network device, so that the node device redirects the service from the second core network device to the first core network device.
In a fifth aspect, an embodiment of the present invention provides a redirection method, which is applied to a first core network device, where the first core network device is connected to a node device; the method comprises the following steps: when the service load is determined to exceed the processing threshold, sending a service redirection request to the node equipment; and receiving a confirmation message from the node equipment, and confirming that the node equipment completes redirection interaction with second core network equipment which can accept the service.
Further, after the first core network device receives the acknowledgement message from the node device, the method further includes: and after the processing capability is recovered, sending a processing capability recovery notification to the node equipment, so that the node equipment redirects the service to the first core network equipment from the second core network equipment.
In a sixth aspect, an embodiment of the present invention provides a redirection method, which is applied to a second core network device, where the second core network device is connected to a node device; the method comprises the following steps: receiving a service acceptance request from the node equipment; and sending a service acceptance response to the node equipment, so that the node equipment confirms that the node equipment completes redirection interaction with the second core network equipment after receiving the service acceptance response, and sends a confirmation message to the first core network equipment.
In the redirection method, the node device, and the core network device provided in the embodiments of the present invention, the node device is disposed between the access network device group and the core network device group, and the node device is connected to each device in the access network device group and the core network device group, so that a star topology is formed between the core network device and the node device, and between the access network devices. In this way, in the redirection process, the first core network device in the core network device group sends a service redirection request to the node device, the node device responds to the service redirection request, determines the second core network device which can accept the redirection service in the core network device group, and sends a service acceptance request to the second core network device; then, the second core network device replies a node device service acceptance response, and after receiving the service acceptance response, the node device confirms that the redirection interaction with the second core network device is completed, and sends a confirmation message to the first core network device. Therefore, in the redirection process, the core network equipment only needs to perform signaling interaction with the node equipment, so that the signaling quantity in the network is greatly reduced, the technical problem of high system resource consumption caused by high network signaling overhead in the prior art is effectively solved, the network signaling overhead is further reduced, and the system resources are saved.
Drawings
Fig. 1 is a schematic diagram of a networking manner of a core network device and an access network device based on pool grouping in the prior art;
FIG. 2 is a block diagram of a wireless communication system according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating a redirection method according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a CS domain system in an embodiment of the present invention;
fig. 5 is a schematic diagram of a redirection procedure performed by the CS domain system in the embodiment of the present invention;
FIG. 6 is a flowchart illustrating a method for performing redirection at a node device side according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a node device in the embodiment of the present invention;
fig. 8 is a flowchart illustrating a method for performing redirection on a first core network device side according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating a method for performing redirection at a second core network device side according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a core network device in the embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
An embodiment of the present invention provides a wireless communication system, and fig. 2 is a schematic structural diagram of the wireless communication system in the embodiment of the present invention, and referring to fig. 2, the system includes: a node device 10, a core network device group 20, and an access network device group 30; wherein,
the core network device group 20 includes a first core network device 21 and a second core network device 22, and is configured to process service information forwarded by the node device 10;
in practical applications, the core network device group 20 may include two or more core network devices, and the number of the core network devices is not limited and may be determined according to network construction needs.
The access network device group 30 includes at least one access network device, and is configured to send service information to the node device;
the node device 10 has a communication interface function and a routing function, is arranged between the core network device group 20 and the access network device group 30, adopts a biplane structure capable of ensuring the system reliability, and is connected with each core network device to form a star topology; and connecting with each access network device to form a star topology.
With reference to the embodiment of the present invention, in the above system, the node device 10 is configured to receive a service redirection request sent by a first core network device 21 in the core network device group 20; in response to the service redirection request, determining a second core network device 22 that can accept the service in the core network device group 20; sending a service acceptance request to the second core network device 22; receiving a service acceptance response from the second core network device 22, confirming that the node device 10 has completed redirection interaction with the second core network device 22, and sending a confirmation message to the first core network device 21;
here, the second core network device that is determined by the node device to be capable of receiving the service may be: and the node equipment determines to select one core network equipment as the redirected core network equipment according to the current load condition of each core network equipment in the core network equipment group.
A first core network device 21, configured to send a service redirection request to the node device 10 when it is determined that the service load exceeds a processing threshold; receiving a confirmation message from the node device 10, confirming that the node device 10 has completed redirection interaction with the second core network device 22 that can accept the service in the core network device group 20;
here, the processing threshold may be preset according to the service processing capability of the core network device itself and the service requirement.
A second core network device 22, configured to receive a service acceptance request from the node device 10; and sending a service acceptance response to the node device 10, so that after receiving the service acceptance response, the node device 10 confirms that the node device 10 has completed redirection interaction with the second core network device 22, and sends a confirmation message to the first core network device 21.
In practical application, each core network device and each access network device need to configure a parameter: a node device address for directing the core network device to the node device to enable communication with the node device; the access network equipment is also pointed to the node equipment, so that the access network equipment can communicate with the node equipment, and the configuration work of both the core network equipment and the access network equipment is greatly reduced because only one parameter needs to be configured.
In this embodiment, the core network device in the core network device group 20 may be a Circuit Switched (CS) domain core network device, such as a Mobile Switching Center (MSC), or a Packet Switched (PS) domain core network device, such as a general packet radio service support node (SGSN), a Mobility Management Entity (MME), or other devices, which is not specifically limited in the present invention.
The access network device in the access network device group 30 may be a Radio Network Controller (RNC), a base station in an LTE system (eNB), or other devices, and is not limited in the present invention.
An embodiment of the present invention provides a redirection method, fig. 3 is a schematic flow diagram of the redirection method in the embodiment of the present invention, and referring to fig. 3, the redirection method includes:
s301: when the first core network equipment determines that the service load exceeds a processing threshold, a service redirection request is sent to the node equipment;
specifically, the first core network device may have an excessive load due to a fault, or a processing capability is decreased due to a sleep request of a partial board card, and if there is a burst service at this time, the first core network device may determine whether the current service load exceeds its own processing capability through an internal mechanism, that is, compare the service load with a processing threshold, and send a service redirection request to the node device under the condition that it is determined that the service load exceeds the processing threshold, so as to relieve the service pressure of the first core network device and implement load balancing.
In practical application, the processing threshold is set by an operator according to the processing capability of the first core network device and the service requirement, and is stored in the core network device in advance.
S302: the node equipment responds to the service redirection request and determines second core network equipment which can accept the service in the core network equipment group;
in practical applications, S302 may be: the node equipment responds to the service redirection request and obtains the load state of each core network equipment in the core network equipment group; determining a second core network device based on the load status.
Specifically, the node device responds to the service redirection request, calculates and obtains the load state of each core network device in the core network device group, and determines which core network device can receive the service to be redirected according to the load state, and determines the core network device which can receive the service as the second core network device.
S303: the node equipment sends a service acceptance request to second core network equipment;
s304: the second core network equipment sends a service acceptance response to the node equipment;
s305: and the node equipment confirms that the redirection interaction with the second core network equipment is completed, and sends a confirmation message to the first core network equipment.
In the specific implementation process, the acknowledgement message may also carry address information of the second core network device.
In another embodiment, after S305, after the first core network device recovers the processing capability, the first core network device may further send a processing capability recovery notification to the node device, so that the node device can redirect the traffic to the first core network device.
Therefore, when the access network equipment in the access network equipment group sends service information to the node equipment, the node equipment forwards the service information to the second core network equipment, and service continuity and system reliability are guaranteed.
The above-described flow is described below by way of specific examples.
It is assumed that fig. 4 is a schematic structural diagram of a CS domain system in the embodiment of the present invention, as shown in fig. 4, a core network device group 41, an access network device group 42, and a node device 43 exist in the CS domain system, where the core network device group 41 includes two devices, namely, an MSC1 and an MSC2, and the access network device group 42 includes three devices, namely, an RNC1, an RNC2, and an RNC 3; the MSC1 and the MSC2 are connected to the node device 43, respectively, to form a star topology; the RNC1, the RNC2, and the RNC3 are also connected to the node device 43, respectively, to form a star topology.
Fig. 5 is a schematic diagram of a redirection procedure performed by the CS domain system in the embodiment of the present invention, and referring to fig. 5, the redirection procedure is:
s501: when the MSC1 fails, the MSC1 determines that the traffic load exceeds a processing threshold;
s502: the MSC1 sends a service redirection request to the node device;
the service redirection request is used for requesting the node equipment to redirect the service;
s503: the node equipment responds to the service redirection request, calculates and obtains the load state of each core network equipment in the core network equipment group, and determines the MSC2 as the core network equipment capable of receiving the service according to the load state;
that is, the node device calculates the load status of each core network device, and finds out which core network device can receive the service, and the MSC2 can receive the service.
S504: the node equipment sends a service acceptance request to the MSC 2;
wherein the service acceptance request is for requesting the MSC2 to accept the service.
S505: the MSC2 sends a service acceptance response to the node device;
s506: the node device sends an acknowledgement message to the MSC 1.
Wherein the confirmation message is used to confirm that the node device completes the redirection interaction with the MSC 2. In the specific implementation process, the acknowledgement message may also carry address information of the MSC 2.
Thus, the redirection flow of the service is completed, and as long as the RNC1, the RNC2 and the RNC3 send the service information to the node device, the node device sends the service information to the MSC2, so that the continuity of the service and the reliability of the system can be ensured.
Compared with the prior art, under the condition that two MSCs and three RNCs exist in the system, in the embodiment of the invention, only four interactive signaling are needed for completing the whole redirection process, while twelve interactive signaling are needed in the prior art, obviously, the signaling overhead in the network is greatly reduced, the system resources occupied by the signaling are reduced, and further the system resources are saved.
Further, when the MSC1 fails, the MSC1 may also send a processing function recovery notification to the node device, and when the node device receives the notification, it knows that the MSC1 has recovered, and then, when the MSC2 fails, is overloaded, or is sleeping on a partial board, the traffic may be redirected back to the MSC1 again.
In summary, a node device is arranged between the access network device group and the core network device group, and the node device is respectively connected to each device in the access network device group and the core network device group, so that the access network device and the core network device form a star-shaped and flat network structure through the newly added node device, thereby reducing the complexity of devices in the system and reducing the configuration work of the devices; furthermore, in the redirection process, the core network equipment only needs to interact with the node equipment, and does not need to interact with a plurality of access network equipment as in the prior art, so that the signaling overhead in the network can be greatly reduced, and the system resources are saved; furthermore, in the redirection process, the access network device does not need to sense the change of the processing capacity of the first core network device, and does not need to calculate the load state of the core network device, and only needs to send the service information to the node device according to the configuration of the parameters, so that the system resource occupancy rate of the access network device can be reduced.
Based on the same inventive concept, the present invention provides a redirection method, fig. 6 is a schematic flow chart of a redirection method performed on a node device side in an embodiment of the present invention, and referring to fig. 6, the redirection method includes:
s601: receiving a service redirection request sent by a first core network device in a core network device group;
s602: responding to the service redirection request, and determining second core network equipment which can accept the service in the core network equipment group;
specifically, S602 may be: acquiring the load state of each core network device in the core network device group; determining a second core network device based on the load status.
S603: sending a service acceptance request to second core network equipment;
s604: and receiving a service acceptance response from the second core network device, confirming that the node device completes redirection interaction with the second core network device, and sending a confirmation message to the first core network device.
Further, after S604, the method further includes: and receiving a processing capability recovery notification sent by the first core network device so that the node device can redirect the service from the second core network device to the first core network device.
Based on the same inventive concept, embodiments of the present invention provide a node device, which is consistent with the node device described in one or more embodiments above. Fig. 7 is a schematic structural diagram of a node device in an embodiment of the present invention, and referring to fig. 7, the node device includes: a first transceiver 71 and a first processor 72; the first transceiver 71 is configured to receive a service redirection request sent by a first core network device in the core network device group; the second core network equipment is also used for sending a service receiving request to the second core network equipment which can receive the service in the core network equipment group; the first core network device is used for receiving a service receiving response from the first core network device, confirming that the node device completes redirection interaction with the first core network device, and sending a confirmation message to the second core network device; the first processor 72 is configured to determine a second core network device in the core network device group in response to the service redirection request.
Further, the first processor 72 is specifically configured to respond to the service redirection request, and obtain a load state of each device in the core network device group; determining a second core network device based on the load status.
Further, the first transceiver 71 is further configured to receive a processing capability recovery notification from the first core network device, so that the node device can redirect the traffic from the second core network device to the first core network device.
Based on the same inventive concept, an embodiment of the present invention provides a redirection method, where fig. 8 is a schematic flow diagram of a redirection method performed on a first core network device side in the embodiment of the present invention, and with reference to fig. 8, the method includes:
s801: when the service load is determined to exceed the processing threshold, sending a service redirection request to the node equipment;
s802: and receiving a confirmation message from the node equipment, and confirming that the node equipment completes redirection interaction with the second core network equipment.
Further, after the first core network device receives the acknowledgement message from the node device, the method further includes: and after the processing capability is recovered, sending a processing capability recovery notification to the node equipment so that the node equipment can redirect the service from the second core network equipment to the first core network equipment.
Based on the same inventive concept, an embodiment of the present invention provides a redirection method, where fig. 9 is a schematic flow diagram of a redirection method performed on a second core network device side in the embodiment of the present invention, and with reference to fig. 9, the method includes:
s901: receiving a service acceptance request from node equipment;
the service receiving request is sent by the node device after receiving a service redirection request from the first core network device.
S902: and sending a service acceptance response to the node equipment, so that after receiving the service acceptance response, the node equipment confirms that the node equipment completes redirection interaction with the second core network equipment, and sends a confirmation message to the first core network equipment.
Based on the same inventive concept, an embodiment of the present invention provides a core network device, where the core network device is consistent with the first core network device described in one or more embodiments above. Fig. 10 is a schematic structural diagram of a core network device in an embodiment of the present invention, and referring to fig. 10, the core network device includes: a second processor 101 and a second transceiver 102; the second processor 101 is configured to determine that the traffic load exceeds a processing threshold; a second transceiver 102, configured to send a service redirection request to a node device; and the second core network device is further configured to receive a confirmation message from the node device, confirming that the node device has completed the redirection interaction with the second core network device.
In practical application, each core network device and each access network device need to configure a parameter: a node device address, namely, the core network device points to the node device, so that the node device is communicated with the node device; the access network equipment is also pointed to the node equipment, so that the access network equipment can communicate with the node equipment, and the configuration work of the equipment is greatly reduced.
In this embodiment, the core network device may be a Circuit Switched (CS) domain core network device, such as a Mobile Switching Center (MSC), or a Packet Switched (PS) domain core network device, such as a serving general packet radio service support node (SGSN), a Mobility Management Entity (MME), or other devices, which is not specifically limited in the present invention.
Further, the second transceiver 102 is further configured to send a processing capability recovery notification to the node device after the processing capability of the core network device is recovered, so that the node device can redirect the traffic from the second core network device to the core network device.
Based on the same inventive concept, an embodiment of the present invention provides a core network device, where the core network device is consistent with the second core network device described in one or more embodiments above. The core network device includes: a third transceiver and a third processor; a third transceiver, configured to receive a service acceptance request sent by the node device, send a service acceptance response to the node device, so that after receiving the service acceptance response, the node device confirms that the node device has completed redirection interaction with the core network device, and send a confirmation message to the first core network device; and the third processor is used for processing the service information sent by the node equipment.
The service acceptance request is used for requesting the core network equipment to accept the service.
In practical applications, the functions of the third transceiver may be performed by the second transceiver 102 and the functions of the third processor may also be performed by the second processor 101 in one or more embodiments described above, that is, the functions of the first core network device and the second core network device may be integrated into one core network device.
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 a hardware embodiment, a 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.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (12)
1. The node equipment is characterized by being arranged between an access network equipment group and a core network equipment group and respectively connected with each equipment in the access network equipment group and the core network equipment group; the node device includes: a first transceiver and a first processor; wherein,
the first transceiver is configured to receive a service redirection request sent by a first core network device in the core network device group; the core network device group is also used for sending a service receiving request to a second core network device which can receive the service in the core network device group; receiving a service acceptance response from the second core network device, confirming that the redirection interaction with the second core network device is completed, and sending a confirmation message to the first core network device;
the first processor is configured to determine, in the core network device group, the second core network device in response to the service redirection request.
2. The node device of claim 1, wherein the first processor is specifically configured to obtain, in response to the service redirection request, a load state of each core network device in the core network device group; determining the second core network device in the core network device group based on the load status.
3. The node device of claim 1, wherein the first transceiver is further configured to receive a processing capability recovery notification from the first core network device, so that the node device redirects the traffic from the second core network device to the first core network device.
4. A core network device, wherein the core network device is connected to a node device; the core network device includes: a second transceiver and a second processor; wherein,
the second processor is configured to determine that a traffic load exceeds a processing threshold;
the second transceiver is configured to send a service redirection request to the node device; and the node device is further configured to receive a confirmation message from the node device, confirming that the node device has completed redirection interaction with another core network device.
5. The core network device according to claim 4, wherein the second transceiver is further configured to send a processing capability recovery notification to the node device after the processing capability of the core network device to which the node device belongs is recovered, so that the node device redirects the service from the another core network device to the core network device to which the node device belongs.
6. A core network device, wherein the core network device is connected to a node device; the core network device includes: a third transceiver and a third processor; wherein,
and a third transceiver, configured to receive the service acceptance request sent by the node device, send a service acceptance response to the node device, so that after receiving the service acceptance response, the node device confirms that the node device has completed redirection interaction with the core network device, and send a confirmation message to another core network device.
7. A redirection method is applied to node equipment, wherein the node equipment is arranged between an access network equipment group and a core network equipment group and is respectively connected with each equipment in the access network equipment group and the core network equipment group; the method comprises the following steps:
receiving a service redirection request sent by first core network equipment in a core network equipment group;
responding to the service redirection request, and determining second core network equipment which can accept the service in the core network equipment group;
sending a service acceptance request to the second core network equipment;
and receiving a service acceptance response from the second core network device, confirming that the node device completes redirection interaction with the second core network device, and sending a confirmation message to the first core network device.
8. The method of claim 7, wherein the determining, in the core network device group, a second core network device that can accept the service comprises:
acquiring the load state of each core network device in the core network device group;
determining the second core network device in the core network device group based on the load status.
9. The method of claim 7, wherein after the sending the acknowledgement message to the first core network device, the method further comprises:
and receiving a processing capability recovery notification sent by the first core network device, so that the node device redirects the service from the second core network device to the first core network device.
10. A redirection method is applied to a first core network device, wherein the first core network device is connected with a node device; the method comprises the following steps:
when the service load is determined to exceed the processing threshold, sending a service redirection request to the node equipment;
and receiving a confirmation message from the node equipment, and confirming that the node equipment completes redirection interaction with second core network equipment which can accept the service.
11. The method of claim 10, wherein after the first core network device receives the acknowledgement message from the node device, the method further comprises:
and after the processing capability is recovered, sending a processing capability recovery notification to the node equipment, so that the node equipment redirects the service to the first core network equipment from the second core network equipment.
12. A redirection method is applied to a second core network device, wherein the second core network device is connected with a node device; the method comprises the following steps:
receiving a service acceptance request from the node equipment;
and sending a service acceptance response to the node equipment, so that the node equipment confirms that the node equipment completes redirection interaction with the second core network equipment after receiving the service acceptance response, and sends a confirmation message to the first core network equipment.
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