CN101111078A - Method for implementing load equalization in pool district and core network node - Google Patents
Method for implementing load equalization in pool district and core network node Download PDFInfo
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Abstract
The present invention provides a method for realizing the load balancing in a pond area, the method comprises that the business request originated by a user is received, and a received core network node of the business request is judged whether meeting the condition of a threshold value of the user migration according to the load information of the core network node in the pond area, if necessary, the user is migrated on the core network node where the load in the pond area is smaller than the load of the core network node of the received business request; if not, the core network node of the received business request processes the business request. Proportionally, the present invention also provides a CN node. The utilization of the technical proposal provided by the present invention can enable to rationalize the load distribution of the various CN nodes in the pond area, to improve the availability of an equipment.
Description
Technical field
The present invention relates to the network communications technology, relate in particular to and realize load balance method and core net (CN, Core Network) node in the district of pond.
Background technology
Iu interface (Iu-Flex) function is a kind of technology that introduce behind 3GPP R5 in global system for mobile communications (GSM), broadband CDMA system (WCDMA) and TDS-CDMA system fields such as (TD-SCDMA) flexibly, it supports a base station controller (BSC, Base StationControl)/radio network controller (RNC, Radio Network Controller) connection routing function in the territory of a plurality of CN nodes.Wherein, the district that a plurality of CN nodes are served is called Chi Qu, and a plurality of CN nodes in the district of pond are realized load sharing, and the service range that they provided covers whole Chi Qu.
When the user enters network first, BSC/RNC is according to the IMSI International Mobile Subscriber Identity (IMSI that carries in the user message, International Mobile Subscriber Identity) or International Mobile Station Equipment Identification (IMEI, International Mobile Equipment Identity) calculates the current V value of user, select user's service CN node then according to the corresponding relation of V value and CN node.Wherein, described CN node is mobile switching centre (MSC, Mobile Switch Center) or service universal grouping wireless business supporting node (SGSN, Service GPRS Supporting Node).Here, in order to guarantee that the load on each CN node evenly distributes in the district of pond, the value distribution that the algorithm that calculates V value by IMSI or IMEI of the last configuration of BSC/RNC must guarantee IMSI or IMEI are calculated the back V value of obtaining is uniform.
But, the inventor is in realizing process of the present invention, find: because the algorithm on the BSC/RNC is pre-configured, can not in time obtain adjusting, therefore, when the load of CN node changes, if still go up the algorithm selection CN node of configuration according to BSC/RNC, will cause the Load distribution of CN node unreasonable so, and finally cause the decline of utilization rate of equipment and installations.
Summary of the invention
In view of this, the main purpose of the embodiment of the invention is to provide and realizes load balance method and core net node in the district of a kind of pond, and the Load distribution of CN node in the district of pond is rationalized, and improves utilization rate of equipment and installations.
For achieving the above object, realize in the pond district that the embodiment of the invention provides that load balance method is as follows:
Receive the Client-initiated service request, judge according to the information on load of core net node in the district of pond whether the core net node that receives described service request satisfies the threshold condition of user's migration, if satisfy, then this user is moved to duty ratio in the district of pond and receive on the little core net node of the load of core net node of described service request; If do not satisfy, the core net node that then receives described service request is handled described service request.
The core net node that the embodiment of the invention provides comprises: load judging unit and user's migration units, wherein,
The load judging unit is used for after receiving the Client-initiated service request, judges that according to the information on load of core net node in the district of pond whether this node satisfies the threshold condition of user's migration, if satisfy, then sends to user's migration units with the service request of receiving; If do not satisfy, then handle described service request in this locality;
User's migration units is used for the user of described initiation service request is moved to the little core net node of pond district this node load of duty ratio.
This shows that in the technical scheme that the embodiment of the invention provided, each CN node in the district of pond can dynamically be adjusted the load of self according to the information on load of other CN node in the district of pond.Load on certain CN node is heavier, when satisfying user's transition condition, such as with the pond district in the load difference of the minimum CN node of load when surpassing preset threshold, the heavier CN node of loading will initiatively be moved to the user of self on the less relatively CN node of load in the district of pond, thereby make that the load of each CN node reaches balanced in the district of pond, realize the rationalization that the CN node load distributes in the district of pond, also improved the existing network usage ratio of equipment simultaneously.
Description of drawings
Fig. 1 realizes the load balance method flow chart in the embodiment of the invention.
Fig. 2 is a method flow diagram of carrying out user's migration between MSC in the embodiment of the invention in position updating process.
Fig. 3 is the flow and method figure that carries out user's migration between MSC in the embodiment of the invention in calling out access procedure.
Fig. 4 is a method flow diagram of carrying out user's migration between SGSN in the embodiment of the invention in the routed domain renewal process.
Fig. 5 is a method flow diagram of carrying out user's migration between SGSN in the embodiment of the invention in user's attaching process.
Fig. 6 is a kind of CN node structure schematic diagram in the embodiment of the invention.
Fig. 7 is the another kind of CN node structure schematic diagram in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, the embodiment that develops simultaneously with reference to the accompanying drawings is described in further detail the present invention.
In order to overcome the problems of the prior art, make the Load distribution of CN node in the district of pond reach optimum, the embodiment of the invention provides in the district of a kind of pond and has realized load balance method, and referring to shown in Figure 1, this method mainly may further comprise the steps:
After step 101:CN node is received the Client-initiated service request, judge whether self load satisfies user's transition condition, whether reach pre-set threshold such as the difference of judging the CN node load that load in self load and the pond district is minimum, if reach, then execution in step 102; Otherwise, execution in step 103.
Step 102:CN node is moved to this user on the minimum CN node of described load, jumps out this flow process then.
Step 103:CN node is handled described service request in this locality.
That is to say, when the load difference of the minimum CN node of load in load on certain CN node and the pond district surpasses certain threshold value, the CN node that this load is heavier will initiatively be moved to the user of self on the CN node of load minimum in the district of pond, like this can be so that the load of each CN node reaches balanced in the district of pond.
Wherein, described CN node is MSC or SGSN or other similar functions entity.Described service request is position updating request, routed domain update request, adhere to request, caller request or page response etc.
Here, the information on load of all CN nodes in the configured pool district respectively on each CN node in the district of pond in advance.After the CN node is received the Client-initiated service request, according to the information on load of self configuration, judge self with the pond district in load difference between the minimum CN node of load whether above pre-set threshold.Described threshold value can be provided with according to the actual requirements.
Because the load of CN node can change in real time, therefore, each CN node in the district of pond needs regularly the information on load that self disposes to be upgraded, and the update cycle can be determined on a case-by-case basis.Such as, the current load condition of other CN node broadcasts self in the regular Xiang Chi of the CN node district in the district of pond receives that the CN node of this broadcasting upgrades the information on load that self disposes according to the information of receiving; Perhaps, other CN node in the regular Xiang Chi of the CN node district in the district of pond sends the load query requests, the CN node load condition that self is current of receiving the load query requests returns to the CN node that sends the load query requests, then, the CN node that sends the load query requests upgrades the information on load that self disposes according to the information of receiving again.Wherein, the visual actual demand of time of CN node transmission broadcasting or transmission load query requests is provided with.
For the purpose of clear more, be that MSC is an example with the CN node below, to realizing in the MSC pond that load balance method is elaborated.
Such as, to suppose to have 3 MSC:MSC1, MSC2, MSC3 in the MSC pond, their configuration capacity is respectively: 500,000,600,000,800,000.If current actual user's number of MSC1, MSC2, MSC3 is respectively: 200,000,300,000,350,000, then in this case, can on MSC1, MSC2, MSC3, dispose load condition table as shown in table 1.
| MSC ID | The MSC configuration capacity | The current capacity of having used of MSC | Load |
| MSC1 | 500,000 | 200,000 | 40％ |
| MSC2 | 600,000 | 300,000 | 50％ |
| MSC3 | 800,000 | 350,000 | 43.75％ |
Table 1
By table 1 as seen, the heaviest MSC is MSC2 when preload, and its load has reached 50%; The minimum MSC of load is MSC1, and its load is 40%.
At the load condition shown in the table 1, respectively MSC1, MSC2 and MSC3 are received that the processing after the customer service request is elaborated below, and the load difference threshold value is set is 5%.
After MSC1 receives the Client-initiated service request, at first check the load condition table that self disposes, as seen by table 1, the minimum MSC of load is MSC1 itself in the pond, therefore, MSC1 need not other MSC transferring user in the pond, handles the service request of receiving in this locality and gets final product.If the service request of receiving is a position updating request, MSC1 then arrives attaching position register (HLR, Home LocationRegister) executing location and upgrades processing; If the service request of receiving is for calling out the request of access, MSC1 then carries out call control process, and wherein, concrete Business Processing process is consistent with prior art, gives unnecessary details no longer one by one here.
After MSC2 receives the Client-initiated service request, the load condition table by checking self configuration as seen, the load of the MSC1 that self duty ratio load is minimum is big by 10%, considerably beyond the threshold value 5% that is provided with, satisfy the load transition condition, therefore, MSC2 moves this user to MSC1.
After MSC3 receives the Client-initiated service request, load condition table by checking self configuration as seen, the load of the MSC1 that self duty ratio load is minimum is big by 3.75%, less than the threshold value 5% that is provided with, do not satisfy the load transition condition, so MSC3 handles the service request of receiving in this locality.
Through after the above processing, user on the MSC1 can increase gradually, suppose that after after a while, actual user's number of MSC1, MSC2, MSC3 is respectively: 250,000,310,000,380,000, then the load condition table of MSC1, MSC2, the last configuration of MSC3 will be updated to the form shown in the table 2.
| MSC ID | The MSC configuration capacity | The current capacity of having used of MSC | Load |
| MSC1 | 500,000 | 250,000 | 50％ |
| MSC2 | 600,000 | 310,000 | 51.67％ |
| MSC3 | 800,000 | 380,000 | 47.5％ |
Table 2
Need to prove that the user who is moved both can be the new registration user, also can be the local exchange registered users.In actual applications, can look real needs and only move the new registration user; Perhaps, in order to realize fast transferring, simultaneously new registration user and registered users are moved away.
Below respectively in the position updating process and call out that the user's transition process between MSC is elaborated in the access procedure.Here, for convenience of description, the MSC that the user is gone out by migration is called source MSC, and the MSC that the user is moved to is called purpose MSC.
Fig. 2 shows the method flow diagram of carrying out user's migration between MSC in position updating process.Referring to shown in Figure 2, this transition process mainly may further comprise the steps:
Step 201: user Xiang Yuan MSC initiates position updating request.
Step 202: source MSC receives the Client-initiated position updating request, and judge need this user moved away after, the difference of promptly judging the minimum MSC load of load in self load and the pond district reaches after the pre-set threshold, upgrade acceptance to this user's home position, and the Internet resources indications (NRI, Network Resource Indicator) of carrying non-broadcast location area (Non-Broadcast LAI) and purpose MSC therein.
Step 203: the user listens to Non-Broadcast LAI that the Location Area Identification (LAI) in the system information broadcast receives with self when inconsistent at Idle state, again initiate the position and upgrade, send the position updating request of the NRI and the Non-Broadcast LAI that carry described purpose MSC to BSC/RNC.
After step 204:BSC/RNC receives the Client-initiated position updating request, this position updating request is sent to the pairing purpose MSC of the NRI that wherein carries.
Step 205: after purpose MSC receives position updating request, upgrade processing to the HLR executing location, and for this user distributes local exchange LAI and local exchange NRI, local exchange LAI and local exchange NRI are carried at the position upgrade and send to this user in accepting, this user is registered at purpose MSC.
So far, whole user's transition process is finished.
Fig. 3 shows the method flow diagram of carrying out user's migration between MSC in calling out access procedure.Referring to shown in Figure 3, this transition process mainly may further comprise the steps:
Step 301: user Xiang Yuan MSC makes a call and inserts request.
Step 302: source MSC receives that the Client-initiated calling inserts request, and judge need this user moved away after, return Temporary Mobile Subscriber Identity (TMSI to this user, Temp MobileSubscriber Identity) weighs assignment commands, and carry the NRI of Non-Broadcast LAI and purpose MSC therein.
Step 303～305: consistent with step 203～205, repeat no more here.
Be example above with MSC,, need to prove that the present invention is equally applicable to SGSN realizing in the district of pond that load balance method elaborates.
Be that the routed domain update request is an example with adhering to (attach) request with the customer service request respectively below, the user's transition process between SGSN is elaborated.Here, for convenience of description, the SGSN that the user need be moved away is called source SGSN, and the SGSN that the user is moved to is called purpose SGSN.
Fig. 4 shows the method flow diagram of carrying out user's migration between SGSN in the routed domain renewal process.Referring to shown in Figure 4, this transition process mainly may further comprise the steps:
Step 401: user Xiang Yuan SGSN initiates the routed domain update request.
Step 402: source SGSN receives Client-initiated routed domain update request, and judge need this user moved away after, return routed domain to this user and upgrade acceptance, and carry the NRI of non-broadcasting routed domain sign (Non-Broadcast RAI) and purpose SGSN therein.
Step 403: the user listens to Non-Broadcast RAI that the routed domain sign (RAI) in the system information broadcast receives with self when inconsistent at Idle state, again initiate routed domain and upgrade, send the routed domain update request of the NRI and the Non-Broadcast RAI that carry described purpose SGSN to BSC/RNC.
After step 404:BSC/RNC receives Client-initiated routed domain update request, this routed domain update request is sent to the pairing purpose SGSN of the NRI that wherein carries.
After step 405: purpose SGSN receives the routed domain update request, carry out routed domain to HLR and upgrade processing, and for this user distributes local exchange RAI and local exchange NRI, local exchange RAI and local exchange NRI are carried at routed domain upgrade and send to this user in accepting, this user is registered at purpose SGSN.
So far, whole user's transition process is finished.
Fig. 5 shows the method flow diagram of carrying out user's migration between SGSN in user's attaching process.Referring to shown in Figure 5, this transition process mainly may further comprise the steps:
Step 501: user Xiang Yuan SGSN initiates to adhere to request.
Step 502: source SGSN receives that Client-initiated adheres to request, and judge need this user moved away after, return to this user and to adhere to acceptance, and carry the NRI of Non-Broadcast RAI and purpose SGSN therein.
Step 503～505: consistent with step 403～405, repeat no more here.
In above embodiment, all are modes of receiving the CN node load difference that load in the CN node of service request and the pond district is minimum by calculating, carry out the judgement whether the CN node satisfies user's transition condition.Need to prove, in actual applications, can also judge whether the CN node satisfies user's transition condition by other mode.
Such as, the CN node is after receiving the Client-initiated service request, judge in the little CN node of pond district internal ratio self load according to the information on load of configuration, whether exist with self load difference and reach the CN node that preestablishes threshold value (as 5%), if exist, judge that then self load satisfies user's transition condition, this user is moved to describedly reach on the CN node that preestablishes threshold value with self load difference; If there is no, judge that then self load does not satisfy user's transition condition, handle the service request of receiving in this locality, do not carry out user's migration.
Perhaps, preestablish a load threshold value, the CN node is after receiving the Client-initiated service request, judge whether self load reaches predefined load threshold value (as 70%), if reach, judge that then self load satisfies user's transition condition, moves in the district of pond this user than on the little CN node of self loading; If do not reach, judge that then self load does not satisfy user's transition condition, handle the service request of receiving in this locality, do not carry out user's migration.
Correspondingly, the present invention also provides a kind of CN node, and referring to shown in Figure 6, this node mainly comprises: load judging unit and user's migration units, wherein,
The load judging unit, be used for after receiving the Client-initiated service request, judge according to the information on load of core net node in the district of pond whether this node load satisfies the threshold condition of user's migration, if satisfy, then the service request of receiving is sent to user's migration units, if do not satisfy, then handle described service request in this locality;
User's migration units is used for the user of described initiation service request is moved to the little CN node of pond district this node load of duty ratio.
Wherein, described load judging unit can be after receiving the Client-initiated service request, whether the difference of judging the CN node load of load minimum in this node load and the pond district according to the information on load of core net node in the district of pond reaches pre-set threshold, if reach, judge that then this node load satisfies the threshold condition of user's migration, sends to user's migration units with the service request of receiving; If do not reach, then judge the threshold condition of the discontented sufficient user's migration of this node load, handle described service request in this locality.User's migration units is moved to the user of this initiation service request on the CN node of load minimum in the district of described pond after receiving the service request that the load judging unit sends.
Perhaps, described load judging unit is after receiving the Client-initiated service request, judge in the district of pond than whether existing load difference to reach the CN node that preestablishes threshold value in the little CN node of this node load according to the information on load of core net node in the district of pond with this node, if exist, judge that then this node load satisfies the threshold condition of user's migration, sends to user's migration units with the service request of receiving; If there is no, then judge the threshold condition of the discontented sufficient user's migration of this node load, handle described service request in this locality.User's migration units is after receiving the load judging unit service request of sending, and the load difference that the user of this initiation service request is moved to this node reaches on the CN node that preestablishes threshold value.
Perhaps, described load judging unit is after receiving the Client-initiated service request, judge according to the information on load of core net node in the district of pond whether this node load reaches pre-set threshold, if reach, judge that then this node load satisfies the threshold condition of user's migration, sends to user's migration units with the service request of receiving; If do not reach, then judge the threshold condition of the discontented sufficient user's migration of this node load, handle described service request in this locality.
Referring to shown in Figure 7, described CN node also comprises: be used for the information on load memory cell of each CN node load information of storage pool district and be used for the regular information on load updating block that the information on load of information on load memory cell is upgraded.
Wherein, when described CN node was MSC, the NRI that described user's migration units is used for purpose MSC that Non-BroadcastLAI and user are moved to sent to described user.
When described CN node was SGSN, the NRI that described user's migration units is used for purpose SGSN that Non-Broadcast RAI and user are moved to sent to described user.
For the purpose of clear more, CN node provided by the invention is elaborated below by an object lesson.
Such as, suppose that described CN node is MSC, and store load condition table as shown in table 1 in the information on load memory cell of this MSC.The load judging unit is after receiving the customer service request, at first check the load condition table in the information on load memory cell, calculate the difference of the minimum CN node load of load in self load and the pond district, and judge whether this difference reaches pre-set threshold, if reach, then the service request of receiving is sent to user's migration units, notify user's migration units that this user is moved on the minimum CN node of load; If do not reach, then handle described service request in this locality.
If described service request is a position updating request, then user's migration units is returned the position renewal of the NRI that carries the MSC of load minimum in the Non-Broadcast LAI He Chi district and is accepted after receiving the position updating request that the load judging unit sends to the user who initiates this position updating request; Again initiate the position after the user receives and upgrade, move on the minimum MSC of described load.
If described service request is for calling out the request of access, then user's migration units is returned the heavy assignment commands of the TMSI that carries the NRI of the MSC of load minimum in the Non-Broadcast LAI He Chi district to initiating this calling access requesting users after receiving the calling access request that the load judging unit sends; Again initiate the position after the user receives and upgrade, move on the minimum MSC of described load.
If described CN node is SGSN, then user's migration units is after receiving the service request that the load judging unit sends, and the NRI of the SGSN that load in the Non-Broadcast RAI He Chi district is minimum sends to the user who initiates described service request; Again initiate routed domain after the user receives and upgrade, move on the minimum SGSN of described load.
Need to prove that at last the present invention is applicable to various fields such as GSM, CDMA, WCDMA and TD-SCDMA.
As seen, in the technical scheme that the embodiment of the invention provided, each CN node in the district of pond can dynamically be adjusted the load of self according to the information on load of other CN node in the district of pond.Load on certain CN node is heavier, when satisfying user's transition condition, such as with the pond district in the load difference of the minimum CN node of load when surpassing preset threshold, the heavier CN node of loading will initiatively be moved to the user of self on the less relatively CN node of load in the district of pond, thereby make that the load of each CN node reaches balanced in the district of pond, realize the rationalization that the CN node load distributes in the district of pond, also improved the existing network usage ratio of equipment simultaneously.
The above has carried out further detailed description to purpose of the present invention, technical scheme and beneficial effect; institute is understood that; the above is not in order to restriction the present invention; within the spirit and principles in the present invention all; any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. realize load balance method in the district of a pond, it is characterized in that, comprising:
Receive the Client-initiated service request, judge according to the information on load of core net node in the district of pond whether the core net node that receives described service request satisfies the threshold condition of user's migration, if satisfy, then this user is moved to duty ratio in the district of pond and receive on the little core net node of the load of core net node of described service request; If do not satisfy, the core net node that then receives described service request is handled described service request.
2. method according to claim 1, it is characterized in that, described information on load according to core net node in the district of pond judges that the threshold condition whether core net node that receives described service request satisfies user's migration comprises: whether the difference of judging the core net node load that load in the core net node load that receives described service request and the pond district is minimum according to the information on load of core net node in the district of pond reaches pre-set threshold, if reach, judge that then the core net node that receives described service request satisfies the threshold condition of user's migration; If do not reach, judge that then the core net node that receives described service request does not satisfy the threshold condition of user's migration;
Describedly this user is moved to duty ratio in the district of pond receive on the little core net node of the load of core net node of described service request and comprise: this user is moved on the minimum core net node of load in the district of described pond.
3. method according to claim 1, it is characterized in that, the threshold condition whether core net node that described information on load judgement according to core net node in the district of pond receives described service request satisfies user's migration comprises: according to the information on load of core net node in the district of pond, judge in the district of pond and reach the core net node that preestablishes threshold value than whether existing with the core net node load difference that receives described service request in the little core net node of the core net node load that receives described service request, if exist, judge that then the core net node that receives described service request satisfies the threshold condition of user's migration; If there is no, judge that then the core net node that receives described service request does not satisfy the threshold condition of user's migration;
Describedly this user is moved to duty ratio in the district of pond receive on the little core net node of the load of core net node of described service request and comprise: the load difference that this user is moved to described core net node reaches on the core net node that preestablishes threshold value.
4. method according to claim 1, it is characterized in that, the threshold condition whether core net node that described information on load judgement according to core net node in the district of pond receives described service request satisfies user's migration comprises: judge according to the information on load of core net node in the district of pond whether the load of the core net node that receives described service request reaches pre-set threshold, if reach, judge that then the core net node that receives described service request satisfies the threshold condition of user's migration; If do not reach, judge that then the core net node that receives described service request does not satisfy the threshold condition of user's migration.
5. according to each described method of claim 1 to 4, it is characterized in that the information on load of core net node is configured on the core net node in the district of pond in the district of described pond.
6. method according to claim 5 is characterized in that, this method further comprises: regularly the information on load that disposes on the core net node is upgraded.
7. method according to claim 6 is characterized in that, the described regularly information on load that disposes on the core net node renewal comprises:
The current load condition of other core net node broadcasting in the regular Xiang Chi of core net node in the district of the pond district self receives that the core net node of this broadcasting upgrades the information on load that self disposes according to the information of receiving;
Perhaps, other core net node in the regular Xiang Chi of core net node in the district of the pond district sends the load query requests, the core net node load condition that self is current of receiving the load query requests returns to the core net node that sends the load query requests, and the core net node that sends the load query requests upgrades the information on load that self disposes according to the information of receiving.
8. according to each described method of claim 1 to 4, it is characterized in that, when described core net node is mobile switching centre,
Describedly this user moved to the process that duty ratio in the district of pond receives on the little core net node of the load of core net node of described service request comprise:
After receiving the Client-initiated service request, the Internet resources indication of the purpose mobile switching centre that non-broadcast location area and user are moved to sends to the user, notifies the user to initiate the position again and upgrades;
Base station controller or radio network controller receive the position updating request that Client-initiated carries the Internet resources indication of described purpose mobile switching centre, and the position updating request of receiving is routed to the Internet resources that carry in this request indicates pairing mobile switching centre to handle the completing place renewal process.
9. according to each described method of claim 1 to 4, it is characterized in that, when described core net node is service universal grouping wireless business supporting node,
Describedly this user moved to the process that duty ratio in the district of pond receives on the little core net node of the load of core net node of described service request comprise:
After receiving the Client-initiated service request, the Internet resources indication of the purpose service universal grouping wireless business supporting node that non-broadcasting routed domain sign and user are moved to sends to the user, notifies the user to initiate the routed domain renewal again;
Base station controller or radio network controller receive the routed domain update request that Client-initiated carries the Internet resources indication of described purpose service universal grouping wireless business supporting node, and the routed domain update request of receiving is routed to the Internet resources that carry in this request indicates pairing service universal grouping wireless business supporting node to handle, finish the routed domain renewal process.
10. a core net node is characterized in that, comprising: load judging unit and user's migration units, wherein,
The load judging unit is used for after receiving the Client-initiated service request, judges that according to the information on load of core net node in the district of pond whether this node satisfies the threshold condition of user's migration, if satisfy, then sends to user's migration units with the service request of receiving; If do not satisfy, then handle described service request in this locality;
User's migration units is used for the user of described initiation service request is moved to the little core net node of pond district this node load of duty ratio.
11. core net node according to claim 10, it is characterized in that, described load judging unit is after receiving the Client-initiated service request, judge according to the information on load of core net node in the district of pond whether the difference that the minimum core net node of load is loaded in this node load and the pond district reaches pre-set threshold, if reach, judge that then this node load satisfies the threshold condition of user's migration; If do not reach, then judge the threshold condition of the discontented sufficient user's migration of this node load;
Described user's migration units is moved to described user on the core net node of load minimum in the district of described pond.
12. core net node according to claim 10, it is characterized in that, described load judging unit is after receiving the Client-initiated service request, judge in the district of pond than whether existing load difference to reach the core net node that preestablishes threshold value in the little core net node of this node load according to the information on load of core net node in the district of pond with this node, if exist, judge that then this node load satisfies the threshold condition of user's migration; If there is no, then judge the threshold condition of the discontented sufficient user's migration of this node load;
The load difference that described user's migration units moves to described user with this node reaches on the core net node that preestablishes threshold value.
13. core net node according to claim 10, it is characterized in that, described load judging unit is after receiving the Client-initiated service request, judge according to the information on load of core net node in the district of pond whether this node load reaches pre-set threshold, if reach, judge that then this node load satisfies the threshold condition of user's migration; If do not reach, then judge the threshold condition of the discontented sufficient user's migration of this node load.
14., it is characterized in that this node further comprises according to each described core net node of claim 10 to 13:
The information on load memory cell is used for the information on load of each core net node of storage pool district.
15. core net node according to claim 14 is characterized in that, this core net node further comprises: the information on load updating block is used for regular information on load to the information on load memory cell and upgrades.
16. according to each described core net node of claim 10 to 13, it is characterized in that, when described core net node was mobile switching centre, the Internet resources indication that described user's migration units is used for purpose mobile switching centre that non-broadcast location area and user are moved to sent to described user.
17. according to each described core net node of claim 10 to 13, it is characterized in that, when described core net node was service universal grouping wireless business supporting node, described user's migration units is used for non-broadcasting routed domain is identified and the Internet resources indication of the purpose service universal grouping wireless business supporting node that the user is moved to sends to described user.
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