CN108696902B - Method and device for balancing network equipment load - Google Patents
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Abstract
The invention discloses a method for balancing network equipment load, which is characterized in that based on the equipment state of second network equipment, the second network equipment is determined to be switched from a fault to a normal working state; the device state is used for representing whether the second network device is in a normal working state or not; acquiring the total number of User Equipment (UE) managed by the UE, and determining N UEs needing to be migrated to second network equipment based on the total number; n is a positive integer; migrating the N UEs to the second network device. The invention also discloses a network equipment load balancing device.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for load balancing of network devices.
Background
Under an IP Multimedia System (IMS) network, network devices of the same type all use a resource POOL (POOL) to perform networking, such as a Session Border Controller (SBC) POOL. The network equipment of the same type is divided into more than one resource pool, and each resource pool comprises more than one network equipment. And the network devices in each resource pool have the same priority for serving the user equipment, thereby realizing load balance in the resource pools.
For example, when a part of network devices fail, the original service of the failed network device needs to be migrated to the network device that normally works; after the network equipment with the fault is recovered, the UE can be probabilistically accessed to the network equipment switched from the fault to the normal working state in the coverage area only after the user is restarted, so that the UE can bear services after the fault is recovered, and the time period of the load balancing mechanism is longer.
Disclosure of Invention
In view of this, embodiments of the present invention are intended to provide a method and an apparatus for load balancing of network devices, which can quickly implement load balancing.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the embodiment of the invention provides a method for balancing network equipment load, which comprises the following steps:
determining that the second network equipment is switched to a normal working state from a fault based on the equipment state of the second network equipment; the device state is used for representing whether the second network device is in a normal working state or not;
acquiring the total number of User Equipment (UE) managed by the UE, and determining N UEs needing to be migrated to second network equipment based on the total number; n is a positive integer;
migrating the N UEs to the second network device.
The embodiment of the invention provides a device for balancing network equipment load, which comprises: the device comprises a judging module, an obtaining module, a determining module and a transferring module; wherein,
the judging module is used for determining that the second network equipment is switched to a normal working state from a fault based on the equipment state of the second network equipment; the device state is used for representing whether the second network device is in a normal working state or not;
the acquisition module is used for acquiring the total number of the UE managed by the acquisition module;
the determining module is configured to determine, based on the total number, N UEs that need to be migrated to a second network device; n is a positive integer;
the migration module is configured to migrate the N UEs to the second network device.
According to the method and the device for network equipment load balancing provided by the embodiment of the invention, after the fault recovery of the second network equipment is determined, the processing priority of the second network equipment is set to be the highest, N pieces of UE needing to be migrated are obtained according to the total quantity of the UE managed by the first network equipment, and the N pieces of UE are migrated to the second network equipment. In this way, load balancing between network devices can be achieved quickly only on the network device side, and the UE does not need to be restarted.
Drawings
Fig. 1 is a schematic flowchart of a method for load balancing of network devices according to an embodiment of the present invention;
fig. 2 is a schematic diagram of UE allocation before and after failure recovery of a network device according to an embodiment of the present invention;
fig. 3 is a detailed flowchart of a method for load balancing of network devices according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a network device load balancing apparatus according to an embodiment of the present invention.
Detailed Description
The first embodiment,
In the embodiment of the present invention, an implementation flow of the method for load balancing of network devices is shown in fig. 1, and includes the following steps:
step 101: determining that the second network equipment is switched to a normal working state from a fault based on the equipment state of the second network equipment; the device state is used for representing whether the second network device is in a normal working state or not;
step 102: acquiring the total number of User Equipment (UE) managed by the UE, and determining N UEs needing to be migrated to second network equipment based on the total number; n is a positive integer;
step 103: migrating the N UEs to the second network device.
Here, the network device refers to a device for carrying the UE in the network, such as an SBC. The first network equipment is normally working network equipment.
And after the second network equipment is determined to be switched to the normal working state, starting the switch for load balancing.
Further, determining N UEs that need to be migrated to the second network device includes: acquiring a load balancing mode; the load balancing mode is used for indicating the communication type of the UE which needs to be migrated by the first network equipment; here, the communication types include both home and roaming communication types. And determining N UEs which need to be migrated to the second network equipment based on the load balancing mode.
Further, the determining that the second network device is switched from the failure to the normal operating state based on the device status of the second network device includes: acquiring the equipment state of at least one second network equipment, and determining a target second network equipment which is switched to a normal working state from a fault in the at least one second network equipment; setting the processing priority of the target second network device to be highest;
correspondingly, the migrating the N UEs to the second network device includes: migrating the N UEs to the target second network device.
Further, the determining N UEs that need to be migrated to the second network device based on the total number includes: obtaining a preset threshold value based on the total amount, and determining N pieces of UE which need to be migrated to second network equipment based on the preset threshold value; or determining N UEs that need to be migrated to the second network device based on the total number and the number of currently managed UEs of the other at least one network device.
Further, the migrating the N UEs to the second network device includes: changing the network connection state of the N UEs and the first network equipment from an activated state to a deactivated state; the network connection state is used for representing whether the UE is in an activated state; based on a priority order of the first network device and the second network device; wherein the second network device has the highest priority; and sending a control message to the N pieces of UE, wherein the control message is used for controlling the N pieces of UE to be connected to the second network equipment.
The scheme provided by the embodiment can quickly realize load balance among the devices, so that the load difference of each network device in the system is small, and the safe and stable operation of the whole system is realized. The method has wide application prospect in the aspect of load balancing among network devices of current voice services. At present, there are two main types of voice services implemented in 4G networks, namely, providing voice services based on 2G or 3G circuit domain and providing voice services based on 4G packet domain. With the development of information technology, the way of providing voice services based on the 4G packet domain is more and more widely used, wherein the voice services are typically based on the IMS network. In the IMS network, the load balancing mechanism after the failure recovery of the existing network device is that the UE must be restarted once in a long time period, and the processing priority order of each network device in the network device list is uniformly attached to the IMS network, thereby achieving load balancing. Obviously, this mechanism relying on spontaneity is long in period and cannot achieve load balancing if the UE is not restarted. Because the redundancy in the resource pool of the network equipment is limited, if the load in the resource pool can not be balanced quickly after one network equipment is recovered from a fault, some network equipment is in a light load, some network equipment is in a heavy load, the equipment with a high load is easy to operate unstably, and the reoccurring fault is difficult to resist, so that the safety of the whole network operation is not facilitated
By adopting the scheme provided by the embodiment, after the second network equipment is determined to be switched to the normal working state from the fault, the first network equipment determines N pieces of UE which need to be migrated to the second network equipment based on the total quantity of the UE managed by the first network equipment, so that the load balance among the network equipment is ensured to be realized in a short time.
Example II,
In the embodiment of the present invention, an implementation flow of the method for load balancing of network devices is shown in fig. 1, and includes the following steps:
step 101: determining that the second network equipment is switched to a normal working state from a fault based on the equipment state of the second network equipment; the device state is used for representing whether the second network device is in a normal working state or not;
step 102: acquiring the total number of User Equipment (UE) managed by the UE, and determining N UEs needing to be migrated to second network equipment based on the total number; n is a positive integer;
step 103: migrating the N UEs to the second network device.
In step 101 in this embodiment, the network device refers to a device, such as an SBC, for carrying the UE in the network. The first network device is a device that operates normally. The first network device determines that the second network device is switched from the failure state to the normal working state according to the device state of the second network device, which is an essential condition for the first network device to start migrating the UE. Specifically, a first network device acquires a device state of at least one second network device, and determines a target second network device which is switched from a fault to a normal working state in the at least one second network device; next, setting the processing priority of the target second network device to be highest; correspondingly, the N UEs are migrated to the target second network device.
In addition, after the second network equipment is determined to be switched from the fault to the normal working state, the switch for load balancing is started. Here, the first network device may automatically turn on the load balancing switch; or, the state information of the normal operation of the second network device may be sent to the user, and the switch for load balancing may be started manually.
In step 102, the determining, by the first network device, N UEs that need to be migrated to the second network device includes: acquiring a load balancing mode; the load balancing mode is used for indicating the communication type of the UE which needs to be migrated by the first network equipment; and determining N UEs which need to be migrated to the second network equipment based on the load balancing mode. That is, the first network device specifies the type of UE to be migrated according to the load balancing method. Specifically, the first network device obtains a load balancing manner, where the load balancing manner includes a local manner and a roaming manner, and before migrating the UE, the load balancing manner of the UE to be migrated is determined first.
Further, the determining, by the first network device, the N UEs to be migrated to the second network device based on the total number includes: and obtaining a preset threshold value based on the total amount, and determining N pieces of UE which need to be migrated to second network equipment based on the preset threshold value. Specifically, the first network device obtains a preset threshold according to the total number of UEs managed by the first network device, and determines N UEs to be migrated to the second network device according to the preset threshold. Here, the first network device may migrate N UEs greater than a preset threshold to the second network device based on the total number of UEs; or, the first network device may obtain a preset threshold based on the total number of UEs, where the preset threshold is the same as the N number, and migrate the N UEs to the second network device.
In addition, the first network device may determine N UEs that need to be migrated to the second network device based on the total number and the number of currently managed UEs of the other at least one network device. For example, the plurality of network devices obtain an average number of UEs managed by each network device according to the number of UEs managed by the network device, and determine the average number as N UEs to be migrated by the first network device. As can be seen, the first network device determines the number of UEs that need to be migrated according to the total number of managed UEs.
In step 103, migrating, by the first network device, the N UEs to the second network device, including: firstly, a first network device changes the network connection state of the N pieces of UE and the first network device from an activated state to a deactivated state; the network connection state is used for representing whether the UE is in an active state. Specifically, the first network device receives a re-registration request of the UE, responds to the re-registration request, and sends a message to the core network. And through signaling interaction with a core network, the network connection state of the UE and the first network equipment is changed from an activated state to a deactivated state.
Next, based on the priority order of the first network device and the second network device; wherein the second network device has the highest priority; and sending a control message to the N pieces of UE, wherein the control message is used for controlling the N pieces of UE to be connected to the second network equipment. Specifically, when the first network device determines that the second network device is switched from the failure to the normal operating state, the processing priority of the second network device is set to be the highest. Thus, the processing priority of the second network device is higher than the priority of the first network device. The first network equipment sends a control message to N pieces of UE which need to be migrated, so that the N pieces of UE are migrated to the network equipment with the highest processing priority, namely to the second network equipment. First, the first network device causes the N UEs determined to be migrated to become deactivated, in preparation for subsequent migration. And then, according to the determined processing priorities of the first network equipment and the second network equipment, sending a control message to the N pieces of UE, so that the N pieces of UE are migrated to the second network equipment.
Example III,
The method for balancing network device load according to the embodiment of the present invention is described in detail below with reference to an example, taking SBC load balancing in an IMS network as an example.
Here, three SBCs, respectively SBC1, SBC2, and SBC3, are contained in one SBC POOL. Each SBC carries 2 ten thousand UEs for home and roaming. After SBC1 fails, UEs carried by SBC1 are transferred to SBC2 and SBC 3. As shown in figure 2, after SBC1 fails back, the network is re-accessed and traffic is taken over.
Here, SBC2 and SBC3 may migrate N UEs greater than a preset threshold to SBC1 based on the total number of UEs; alternatively, SBC2 and SBC3 may obtain a preset threshold based on the total number of UEs, where the preset threshold is the same as the N value, and migrate N UEs to SBC 1. Furthermore, the SBC2 and SBC3 devices obtain the average number of UEs managed by each network device according to the number of UEs managed by themselves, and determine the average number as N UEs that the SBC2 and SBC3 need to migrate. Specifically, SBC2 and SBC3 may determine 1 ten thousand UEs to be migrated to SBC1 according to 3 ten thousand UEs managed by the SBC2 and SBC3, and migrate the 1 ten thousand UEs to SBC 1.
After SBCs 2 and SBC3 determine that the UE is migrated to SBC1 for failure recovery, the load balancing switch is turned on first, and the UE that is migrated this time is determined to be local and/or roaming communication type. In addition, the processing priority of each SBC in the SBC POOL is also adjusted, and the processing priority of SBC1 whose operating state is switched from the failure state to the normal operating state is set to be the highest.
Fig. 3 shows a detailed flow of the SBC load balancing method according to the embodiment of the present invention. The method comprises the following specific steps:
step 301: the UE sends a registration request to SBC 2;
here, the UE may periodically send a registration request to the SBC, regardless of whether the UE has established a connection relationship with the SBC, which is a conventional connection verification behavior, and generally initiates the registration request once in 1 hour. The target UE is the UE that has established a connection relationship with SBC2 and needs to be migrated.
Step 302: SBC2 responds to the target UE' S registration request and sends a message to the Serving Call Session Control Function (S-CSCF).
Here, SBC2 responds to the registration request of the target UE, and when the number of migrated UEs in SBC2 does not reach the set number of UEs that need to be migrated, SBC2 sends MESSAGE to S-CSCF. Among them, the MESSAGE body Extensible Markup Language (XML) of the MESSAGE is SBC-restore, that is, SBC2 sends a deactivation MESSAGE to the network, so that the registered target UE starts the deactivation process with SBC 2. Meanwhile, SBC2UE counts the counter up by 1.
Furthermore, if SBC2 is handling other requests with the target user while the target UE sends a registration request to SBC2, SBC2 will not send a MESSAGE to the S-CSCF.
Step 303: the target UE and SBC2 implement a deactivated state;
here, the S-CSCF transmits a Server Assignment Request (SAR) including information such as a Proxy Call Session Control Function (P-CSCF) re-note instruction to a Home Subscriber Server (HSS). Next, the S-CSCF sets the registration state of the target UE to unregistered after receiving a Server Assignment Answer (SAA). After receiving the SAR Request, the HSS sends an Insert Subscriber Data Request (IDR) message to a Mobility Management Entity (MME), where the Insert Subscriber Data Request (IDR) message carries P-CSCF re-injection indication information. And after receiving the IDR message carrying the P-CSCF re-injection indication information, sending a deactivation bearing message to the target UE and indicating to carry out reconstruction. Next, the target UE transmits a reestablishment request. The MME is a network element in a 4G Core (EPC).
Step 304: a registration request is sent to SBC1 to establish a connection.
Here, according to the processing priority of each SBC in the SBC POOL, the target UE sends a registration message to the SBC1 with the highest priority after receiving the control message, and establishes a connection with the SBC 1.
Thus, the target UEs are migrated from SBC2 and SBC3 to SBC1, and when SBC2 and SBC3 reach the number of preset migrated UEs, the load balancing process is not performed any more, and the processing priority of each SBC in SBC POOL is also adjusted to the state before SBC1 fails, and the load balancing switch of SBC2 and SBC3 is turned off.
Example four,
In order to implement the method for balancing the load of the network device, an embodiment of the present invention further provides a device for balancing the load of the network device, where a schematic structural diagram of the device is shown in fig. 4, and the device includes: a discrimination module 41, an acquisition module 42, a determination module 43 and a migration module 44; wherein,
the judging module 41 is configured to determine, based on a device state of a second network device, that the second network device is switched from a fault to a normal operating state; the device state is used for representing whether the second network device is in a normal working state or not;
the acquiring module 42 is configured to acquire the total number of UEs managed by the acquiring module;
the determining module 43 is configured to determine, based on the total number, N UEs that need to be migrated to the second network device; n is a positive integer;
the migration module 44 is configured to migrate the N UEs to the second network device.
Here, the determining module 41 is specifically configured to:
acquiring the equipment state of at least one second network equipment, and determining a target second network equipment which is switched to a normal working state from a fault in the at least one second network equipment;
setting the processing priority of the target second network device to be highest;
correspondingly, the migration module 44 is further configured to migrate the N UEs to the target second network device.
Here, the network device refers to a device for carrying a UE in a network. The first network equipment is normally working network equipment. In addition, the judging module 41 further includes a starting function, configured to start the load balancing switch after it is determined that the second network device is switched from the fault to the normal operating state. Here, the starting module can automatically turn on a load balancing switch; or, the state information of the normal operation of the second network device may be sent to the user, and the switch for load balancing may be started manually.
Wherein the determining module 43 is specifically configured to:
acquiring a load balancing mode; the load balancing mode is used for indicating the communication type of the UE which needs to be migrated by the first network equipment;
and determining N UEs which need to be migrated to the second network equipment based on the load balancing mode.
Here, the load balancing method includes local and roaming, and before migrating the UE, the load balancing method of the UE to be migrated is first determined.
Further, the determining module 43 is specifically configured to:
obtaining a preset threshold value based on the total amount, and determining N pieces of UE which need to be migrated to second network equipment based on the preset threshold value; here, the determining module 43 may migrate N UEs greater than a preset threshold to the second network device based on the total number of UEs; alternatively, the determining module 43 may obtain a preset threshold based on the total number of UEs, where the preset threshold is the same as the N number, and migrate the N UEs to the second network device.
In addition, the N UEs that need to be migrated to the second network device are determined based on the total number and the number of currently managed UEs of the other at least one network device. For example, the determining module 43 obtains an average number of UEs managed by each network device through calculation according to the number of UEs managed by each network device, and determines the average number as N UEs to be migrated by the first network device.
Further, the migration module 44 is specifically configured to:
changing the network connection state of the N UEs and the first network equipment from an activated state to a deactivated state; the network connection state is used for representing whether the UE is in an activated state; specifically, the migration module 44 receives a re-registration request of the UE, responds to the re-registration request, and sends a message to the core network. And through signaling interaction with a core network, the network connection state of the UE and the first network equipment is changed from an activated state to a deactivated state.
Based on a priority order of the first network device and the second network device; wherein the second network device has the highest priority; specifically, the judging module 41 sets the processing priority of the second network device to be the highest when it is determined that the second network device is switched from the failure to the normal operating state. The migration module 44 sends a control message to the N UEs, where the control message is used to control the N UEs to connect to the second network device.
In practical applications, the determination module 41, the obtaining module 42, the determining module 43, and the migration module 44 may be implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like in a network device.
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 (6)
1. A method for load balancing network devices, the method comprising:
determining that the second network equipment is switched to a normal working state from a fault based on the equipment state of the second network equipment; the device state is used for representing whether the second network device is in a normal working state or not;
acquiring the total quantity of User Equipment (UE) managed by first network equipment, and determining N UEs needing to be migrated to second network equipment based on the total quantity; n is a positive integer; the determining N UEs that need to be migrated to the second network device includes: acquiring a load balancing mode; the load balancing mode is used for indicating the communication type of the UE which needs to be migrated by the first network equipment; determining N UEs needing to be migrated to second network equipment based on the load balancing mode;
migrating the N UEs to the second network device; the migrating the N UEs to the second network device includes: changing the network connection state of the N UEs and the first network equipment from an activated state to a deactivated state; the network connection state is used for representing whether the UE is in an activated state; based on a priority order of the first network device and the second network device; wherein the second network device has the highest priority; and sending a control message to the N pieces of UE, wherein the control message is used for controlling the N pieces of UE to be connected to the second network equipment.
2. The method of claim 1, wherein determining that the second network device failed to switch to a normal operating state based on the device status of the second network device comprises:
acquiring the equipment state of at least one second network equipment, and determining a target second network equipment which is switched to a normal working state from a fault in the at least one second network equipment;
setting the processing priority of the target second network device to be highest;
correspondingly, the migrating the N UEs to the second network device includes: migrating the N UEs to the target second network device.
3. The method of claim 1, wherein the determining N UEs that need to be migrated to a second network device based on the total number comprises:
obtaining a preset threshold value based on the total amount, and determining N pieces of UE which need to be migrated to second network equipment based on the preset threshold value;
or,
determining N UEs that need to be migrated to the second network device based on the total number and the number of currently managed UEs of the other at least one network device.
4. An apparatus for load balancing of network devices, the apparatus comprising: the device comprises a judging module, an obtaining module, a determining module and a transferring module; wherein,
the judging module is used for determining that the second network equipment is switched to a normal working state from a fault based on the equipment state of the second network equipment; the device state is used for representing whether the second network device is in a normal working state or not;
the acquiring module is used for acquiring the total number of the UE managed by the first network equipment;
the determining module is configured to determine, based on the total number, N UEs that need to be migrated to a second network device; n is a positive integer; wherein the determining module is specifically configured to: acquiring a load balancing mode; the load balancing mode is used for indicating the communication type of the UE which needs to be migrated by the first network equipment; determining N UEs needing to be migrated to second network equipment based on the load balancing mode;
the migration module is configured to migrate the N UEs to the second network device; wherein the migration module is specifically configured to: changing the network connection state of the N UEs and the first network equipment from an activated state to a deactivated state; the network connection state is used for representing whether the UE is in an activated state; based on a priority order of the first network device and the second network device; wherein the second network device has the highest priority; and sending a control message to the N pieces of UE, wherein the control message is used for controlling the N pieces of UE to be connected to the second network equipment.
5. The apparatus of claim 4, wherein the determination module is specifically configured to:
acquiring the equipment state of at least one second network equipment, and determining a target second network equipment which is switched to a normal working state from a fault in the at least one second network equipment;
setting the processing priority of the target second network device to be highest;
correspondingly, the migrating the N UEs to the second network device includes: migrating the N UEs to the target second network device.
6. The apparatus of claim 4, wherein the determining module is specifically configured to:
obtaining a preset threshold value based on the total amount, and determining N pieces of UE which need to be migrated to second network equipment based on the preset threshold value;
or,
determining N UEs that need to be migrated to the second network device based on the total number and the number of currently managed UEs of the other at least one network device.
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| CN102695199A (en) * | 2011-03-24 | 2012-09-26 | 中兴通讯股份有限公司 | Method and system for realizing radio resource control |
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| CN101925123A (en) * | 2009-06-12 | 2010-12-22 | 中国移动通信集团设计院有限公司 | Method, system and related functional entities for realizing load balancing in pool area |
| CN103346923A (en) * | 2013-07-30 | 2013-10-09 | 曙光信息产业(北京)有限公司 | Management method and management device for double-unit load balancing equipment |
| CN103560907A (en) * | 2013-10-23 | 2014-02-05 | 曙光信息产业(北京)有限公司 | Management method and device for double machine load balancing devices |
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