CN101925123B - Method, system and related functional entities for realizing load balancing in pool area - Google Patents
Method, system and related functional entities for realizing load balancing in pool area Download PDFInfo
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- CN101925123B CN101925123B CN 200910086986 CN200910086986A CN101925123B CN 101925123 B CN101925123 B CN 101925123B CN 200910086986 CN200910086986 CN 200910086986 CN 200910086986 A CN200910086986 A CN 200910086986A CN 101925123 B CN101925123 B CN 101925123B
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Abstract
The invention discloses a method, a system and related functional entities for realizing load balancing in a pool area, thus speed and effectiveness for realizing load balancing in the pool area can be improved, and network load and influence of processing capacity on network nodes can be reduced. The method for realizing the load balancing in the pool area comprises the following steps: determining a load balancing index value in the pool area in accordance with load information of each network node in the pool area; when the determined load balancing index value qualifies the set load immigration start conditions, determining a source network node for executing the load immigration and characteristic information on terminals to be immigrated in accordance with the load information of each network node; and within the set load immigration period, immigrating the mobile terminals complying with the characteristic information to a destination network node by source network node control.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to load balance method, system and related functional entities in a kind of realization pool area.
Background technology
3GPP (3rd Generation Partnership Project; 3G (Third Generation) Moblie standardization body) (Release 5 at R5; Version 5) introduced the notion of Pool Area (pool area) in; Pool area comes down to the resource pool be made up of a plurality of network nodes of same type, and each network node in the same area pond can improve the service efficiency of equipment through load sharing.Type according to network node in the pool area; Pool area can be divided into: by CN (Core Network; Core network) MSC (Mobile SwitchCenter, mobile switching centre) pond, SGSN (Serving GPRS Support Node, the Serving GPRS Support Node of node composition; GPRS:General Packet Radio Service; GPRS) pond; By RAN (Radio Access Network; Radio Access Network) RNC (Radio NetworkController Pool, the radio network controller) pond of node composition, BSC (Base Station Controller Pool, base station controller) pond or the like.With the MSC/SGSN pond is that example describes, and need to prove, representes that with "/" MSC and SGSN are coordinations in the present specification, and both are that MSC is the equipment in the CN lattice network territory in difference, and SGSN is the equipment in the CN network packet territory.BSC all can support a RAN node in the territory of a plurality of CN nodes, to be connected routing function with RNC; Allow the RAN node to be routed to the relevant information of administration portable terminal or signaling message on the CN nodes different in the MSC/SGSN pond, thereby make each MSC/SGSN in the MSC/SGSN pond pass through the service efficiency that load sharing improves equipment.
How to solve the unbalanced problem of loading between each network node in the pool area, realize the load balancing in the pool area, become one of problem demanding prompt solution.Wherein a solution is to realize load balancing through the distribution to portable terminal in the new entering pool area.With the MSC/SGSN pond is that example describes; When a portable terminal newly gets into the MSC/SGSN pond; RNC/BSC can adopt the load balancing algorithm; In the MSC/SGSN pond, be in and select a service MSC/SGSN each MSC/SGSN of normal condition, and can initial NAS (Non Access Stratum, Non-Access Stratum) signaling message be distributed on the service MSC/SGSN of selection.But; When the abnormal conditions such as fault of short time appear in the link between certain MSC/SGSN and the RNC/BSC; The portable terminal that is assigned to this MSC/SGSN can be by on the MSC/SGSN of moving in the MSC/SGSN pond other; After link-recovery was normal, the portable terminal that is moved can not go back to automatically, caused no longer equilibrium of the load between each MSC/SGSN in the MSC/SGSN pond.The distribution of portable terminal realizes in the solution of load balancing in passing through new entering pool area; Possess the information on load of the node of selection function according to each network node feedback in the area region; Adjustment to the weight of each network node distribution portable terminal to reach the purpose of load balancing; Because this scheme is only to the new portable terminal that gets in the pool area, and the portable terminal that newly gets into pool area is unforeseen, makes that the speed that realizes load balancing is slower.In addition, portable terminal may move after getting into pool area, makes this scheme can not effectively solve the unbalanced problem of loading between each network node in the pool area.
Another kind of solution is through the migration that gets into portable terminal in the pool area is realized load balancing.This solution adopts the scatternet framework; Need broadcasting each other in the pool area between each network node; Each network node all need be stored the information on load of each network node, and all need make the judgement of whether moving after receiving the business that portable terminal initiates at every turn.On the one hand, increase network load, reduced the disposal ability of network node; On the other hand, all need adjudicate whether satisfy the load transition condition afterwards, make that the speed of realization load balancing is slower owing to receive the business of portable terminal initiation at every turn.In addition,, possibly be assigned to earlier on the higher network node of load, move on the lower network node of load from this network node again, thereby further reduce the speed that realizes load balancing for the portable terminal of new entering pool area.
Summary of the invention
The present invention provides load balance method and system in a kind of realization pool area, in order to realize the speed and the validity of load balancing in the lifting region pond, reduces network load and to the influence of network node disposal ability.
Accordingly, the present invention also provides a kind of load migration controlled entity.
Load balance method in the realization pool area provided by the invention comprises:
Confirm the load balancing desired value of said pool area according to the information on load of each network node in the pool area;
When the load balancing desired value of determining satisfies the load migration entry condition of setting, confirm to carry out the source network node of load migration and the characteristic information at terminal to be migrated based on the information on load of each network node;
In the load migration cycle of setting, the portable terminal that source network node control will meet said characteristic information migrates to the purpose network node.
The system of load balancing in the realization pool area provided by the invention comprises:
Load moves controlled entity, is used for confirming according to the information on load of each network node of the same area pond the load balancing desired value of said pool area; When the load balancing desired value of determining satisfies the load migration entry condition of setting, confirm to carry out the source network node of load migration and the characteristic information at terminal to be migrated according to the information on load of each network node;
Said source network node was used in the load migration cycle of setting, and the portable terminal that control will meet said characteristic information migrates to the purpose network node.
Load migration controlled entity provided by the invention comprises:
Collecting unit is used for the information on load of each network node of pickup area pond;
Confirm the unit, be used for confirming the load balancing desired value of said pool area according to the information on load of each network node of pool area;
Start unit is used for when the load balancing desired value of determining satisfies the load migration entry condition of setting, confirming to carry out the source network node of load migration and the characteristic information at terminal to be migrated according to the information on load of each network node;
Notification unit is used for the notification source network node and in the load migration cycle of setting, carries out the load migration, and with the characteristic information notification source network node at terminal to be migrated.
Load balance method, system and related functional entities in the realization pool area provided by the invention; Adopt the on-line file framework that the portable terminal that gets into pool area is moved; Unify the information on load of each network node in the pickup area pond and make the judgement whether each network node satisfies load migration entry condition; Can make the all-network node that the satisfies load migration entry condition migration of loading simultaneously through judgement once; Do not need each network node in the pool area to broadcast and store the information on load of all-network node each other; Thereby promoted the speed and the validity that realize load balancing in the pool area, reduced network load and the influence of network node disposal ability.
Description of drawings
Fig. 1 realizes load balance method flow chart in the pool area in the embodiment of the invention;
Fig. 2 realizes load balance method flow chart in the MSC/SGSN pond in the embodiment of the invention;
Fig. 3 is that load migration controlled entity is specified under the purpose MSC/SGSN situation in the embodiment of the invention, and source MSC/SGSN controls the method flow diagram that move at terminal to be migrated;
Fig. 4 does not specify under the purpose MSC/SGSN situation for load migration controlled entity in the embodiment of the invention, and source MSC/SGSN controls a kind of method flow diagram that move at terminal to be migrated;
Fig. 5 does not specify under the purpose MSC/SGSN situation for load migration controlled entity in the embodiment of the invention, and source MSC/SGSN controls the another kind of method flow diagram that move at terminal to be migrated;
Fig. 6 is a system block diagram of realizing load balancing in the pool area in the embodiment of the invention;
Fig. 7 is the structured flowchart of load migration controlled entity in the embodiment of the invention;
Fig. 8 a is the CP load analogue simulation figure of each MSC in the MSC pond before employing the present invention program;
Fig. 8 b is the CP load analogue simulation figure of each MSC in the MSC pond after employing the present invention program.
Embodiment
To realizing the problem that the solution of load balancing exists between each network node in the pool area in the prior art; The embodiment of the invention proposes: adopt the on-line file framework; The information on load of unifying each network node in the pickup area pond by related functional entities; And make the judgement of whether loading and moving, through the migration that gets into portable terminal in the pool area is realized the load balancing in the pool area.The embodiment of the invention further proposes: realize the load balancing in the pool area simultaneously through two aspects; Promptly not only through the migration aspect that gets into portable terminal in the pool area is realized the load balancing in the pool area; Also realize the load balancing in the pool area, avoid the portable terminal that newly gets into pool area is distributed on the higher network node of load through distribution aspect to portable terminal in the new entering pool area.
As shown in Figure 1, the embodiment of the invention provides load balance method in a kind of realization pool area, comprises the steps:
S101, confirm the load balancing desired value of pool area according to the information on load of each network node in the pool area.
S102, when load migration entry condition that the load balancing desired value of determining satisfy to be set, confirm to carry out the source network node of load migration and the characteristic information at terminal to be migrated according to the information on load of each network node;
Preferable; When confirming to carry out the characteristic information at source network node and terminal to be migrated of load migration according to the information on load of each network node, can also confirm the purpose network node that terminal to be migrated needs are moved to according to the information on load of each network node.
S103, in the load migration cycle of setting, the portable terminal that source network node control will meet the characteristic information at terminal to be migrated migrates to the purpose network node;
In the practical implementation, when source network node is initiated the renewal of professional perhaps position at the portable terminal of being administered, judge whether the characteristic information of this portable terminal meets the characteristic information at terminal to be migrated; If the characteristic information of this portable terminal meets the characteristic information at terminal to be migrated, then after portable terminal finished current business or position renewal, control migrated to the purpose network node with this portable terminal from source network node.
So far; Through the migration aspect that gets into portable terminal in the pool area has been realized the load balancing in the pool area; Owing to adopt the on-line file framework; Can make the all-network node that the satisfies load migration entry condition migration of loading simultaneously through judgement once, thereby promote the speed and the validity of realization load balancing, reduce network load and the influence of network node disposal ability.
Further, can also be through the distribution aspect of portable terminal in the new entering pool area be realized load balancing in the pool area, then load balance method in the realization pool area that provides of the embodiment of the invention also comprises the steps:
In S102, determine after the source network node of carrying out the load migration, the source network node of determining is set to unloaded state, and the new portable terminal that gets into pool area is distributed on the source network node in the load migration cycle to avoid; And, after S103 is complete, promptly when load migration end cycle, source network node is re-set as normal condition.
Need to prove; Owing to adopt the on-line file framework; S101, S102 and the state that source network node is set are carried out by related functional entities; Can be called load migration controlled entity in the embodiment of the invention, load migration controlled entity specifically can be arbitrary network node or the server in NMS, the pool area.That is to say that in the real network framework, load migration controlled entity can be same physical entity with certain source network node of determining.
Load balance method in the realization pool area that the embodiment of the invention provides is applicable to MSC pond and SGSN pond in the CN network, the BSC pond in the 2G RAN network, the RNC pond in the 3G RAN network, or the like.
The embodiment of the invention is that example describes with the MSC/SGSN pond.Realize load balance method in the MSC/SGSN pond, as shown in Figure 2, comprise the steps:
S201, load migration controlled entity are gathered the information on load of each MSC/SGSN in the MSC/SGSN pond;
The information on load of MSC/SGSN generally can be CP (coprocessor) load of MSC/SGSN; The telephone traffic that can also carry for MSC/SGSN, A interface link use information or the like; Be that example describes with the CP load in the present embodiment, the span of CP load is [0,1].
S202, load migration controlled entity are confirmed the load balancing desired value in MSC/SGSN pond according to the CP load of each MSC/SGSN in the MSC/SGSN pond;
The variance yields that the load balancing desired value in MSC/SGSN pond can be loaded for the CP of each MSC/SGSN in the MSC/SGSN pond; Also can be other numerical value of confirming according to the CP load of each MSC/SGSN in the MSC/SGSN pond, the for example maximum difference of the CP of each MSC/SGSN load in the MSC/SGSN pond.
When load migration controlled entity detects the signaling message of certain MSC/SGSN in the MSC/SGSN pond when unreachable, be 1 with the CP load value of this MSC/SGSN, and all portable terminals under this MSC/SGSN are moved in control.During the variance yields of the CP in this external definite MSC/SGSN pond load, need be that 1 MSC/SGSN forecloses with the CP load.
Whether the load balancing desired value of determining of judging S203, load migration controlled entity satisfies the load migration entry condition of setting, if then carry out S204; If not; Then do not do any processing, flow process finishes, and wherein load migration entry condition is predefined;
If the load balancing desired value in MSC/SGSN pond is the variance yields of the CP load of each MSC/SGSN in the MSC/SGSN pond, then corresponding load migration entry condition be that the variance yields of CP load of each MSC/SGSN is more than or equal to the variance yields thresholding of setting;
If the load balancing desired value in MSC/SGSN pond is the maximum difference of the CP load of each MSC/SGSN in the MSC/SGSN pond, then corresponding load migration entry condition be that the maximum difference of CP load of each MSC/SGSN is more than or equal to the difference threshold of setting.
S204, load migration controlled entity confirm to carry out the source MSC/SGSN of load migration, the characteristic information at terminal to be migrated according to the information on load of each MSC/SGSN, and terminal wherein to be migrated all is the portable terminals that belong to source MSC/SGSN;
In the practical implementation, load migration controlled entity can be confirmed the purpose MSC/SGSN that terminal to be migrated need be moved to simultaneously, and purpose MSC/SGSN also can control in the process of moving at terminal to be migrated at source MSC/SGSN and confirm;
Load migration controlled entity is confirmed the method for the characteristic information at source MSC/SGSN, purpose MSC/SGSN and terminal to be migrated, specifically can comprise the steps:
A, confirm the maximum of the CP load of each MSC/SGSN, mean value and minimum value according to the CP of each MSC/SGSN in MSC/SGSN pond load;
The MSC/SGSN of the maximum correspondence that b, definite source MSC/SGSN that carries out the load migration are the CP load confirms that the purpose MSC/SGSN that need move at terminal to be migrated is the corresponding MSC/SGSN of minimum value of CP load;
C, confirm the quantity at terminal to be migrated; The quantity at terminal to be migrated can be passed through formula [1] and confirm: the quantity=min{ at terminal to be migrated [total capacity of the MSC/SGSN that the maximum of (mean value of the maximum of CP load-CP load) * CP load is corresponding], [total capacity of the MSC/SGSN that the minimum value of (minimum value of the mean value of CP load-CP load) * CP load is corresponding] } [1]
Wherein, the min{} in the formula [1] representes to get smaller value, and the total capacity of MSC/SGSN is meant the maximum terminal quantity that MSC/SGSN can support;
D, confirm the migration ratio, and confirm the characteristic information at terminal to be migrated according to the migration ratio according to the quantity at terminal to be migrated and the total capacity of source MSC/SGSN;
For example, can set the portable terminal that TMSI (Temporary Mobile Subscriber Identifier, Temporary Mobile Subscriber Identity) meets a certain characteristic is terminal to be migrated.The TMSI of portable terminal comprises NRI (Network Resource Identifier; Network resource identifier) and UI (User Identifier; ID); Wherein NRI can be in all CN nodes the single CN node of unique identification (MSC or SGSN), and the byte length that NRI takies is all identical to all MSC/SGSN in the MSC/SGSN pond.NRI value through setting among the TMSI can guarantee that terminal to be migrated is the portable terminal that belongs to source MSC/SGSN, can guarantee according to the migration ratio of determining the portable terminal that belongs to source MSC/SGSN to be moved through the UI value of setting among the TMSI.The corresponding relation of the characteristic information at migration ratio and terminal to be migrated provides through following formula:
K＝n*(1/2
N)[2]
Wherein, K representes the migration ratio; N and n be the characteristic information at expression terminal to be migrated jointly, and wherein N representes corresponding position, the setting end number of bits of UI value of the TMSI at terminal to be migrated, and n representes UI value corresponding setting quantity in the binary number of setting end number of bits of the TMSI at terminal to be migrated.
For example, when the migration ratio is 50%, corresponding n=1, N=1, the UI value end portable terminal for any 1bit binary number (0 or 1) that then can set among the TMSI is terminal to be migrated; When the migration ratio is 12.5%, corresponding n=1, N=3, the portable terminal that then can set three at UI value end among the TMSI and be any 3bit binary number (for example 001) is terminal to be migrated; When the migration ratio is 19%, corresponding n=3, N=4, the portable terminal that then can set four at UI value end among the TMSI and be any three 4bit binary numbers (for example 0001,0010,0011) is terminal to be migrated.
S205, load migration controlled entity notification source MSC/SGSN carry out the load migration in the load migration cycle of setting; And with the characteristic information notification source MSC/SGSN at terminal to be migrated; If load migration controlled entity is also determined the purpose MSC/SGSN that terminal to be migrated need be moved to, the purpose MSC/SGSN notification source MSC/SGSN that then simultaneously terminal to be migrated need be moved to; And source MSC/SGSN is set to unloaded state, is distributed on the MSC/SGSN of source with the portable terminal of avoiding the new MSC/SGSN of entering pond in the load migration cycle.
S206, in the load migration cycle, certain portable terminal the MSC/SGSN of source is under initiated professional or position renewal;
Portable terminal uses the TMSI that comprises NRI and UI when initiating the renewal of professional perhaps position, the RNC/BSC of portable terminal ownership sends to the corresponding MSC/SGSN of NRI value to business request information according to the NRI value among its TMSI; This MSC/SGSN possibly be the source MSC/SGSN of the execution load migration determined of load migration controlled entity; To MSC/SGSN is not the situation of the source MSC/SGSN of the execution load migration determined of load migration controlled entity; MSC/SGSN handles according to existing procedure, repeats no more in the present embodiment.
S207, source MSC/SGSN judge whether the characteristic information of the portable terminal that this initiation business or position are upgraded meets the characteristic information at terminal to be migrated, if meet, then carries out S208, if do not meet, then carries out S210;
Source MSC/SGSN judges whether that according to the characteristic information at the terminal to be migrated that load migration controlled entity issues needs are to this portable terminal execution migration; Suppose that it is that 001 portable terminal is terminal to be migrated that load migration controlled entity is set last three of UI value among the TMSI; Then source MSC/SGSN judges whether the NRI value among the TMSI of the portable terminal that this initiation business or position are upgraded is consistent with the NRI value of self; And whether three at the end of the UI value among the TMSI is 001; If then judged result is for meeting;
Need to prove; Because source MSC/SGSN (higher MSC/SGSN promptly loads) has been set to unloaded state; So newly getting into the portable terminal in MSC/SGSN pond can not be assigned on the MSC/SGSN of source; Here, source MSC/SGSN only need control the portable terminal that has got into the MSC/SGSN pond and moves;
S208, finish after current business or position upgrade at this portable terminal, MSC/SGSN migrates to purpose MSC/SGSN from the source with this portable terminal in source MSC/SGSN control.
S209, when load migration end cycle, load migration controlled entity is re-set as normal condition with source MSC/SGSN, flow process finishes.
S210, carry out subsequent treatment according to existing normal flow, flow process finishes.
In S208; Source MSC/SGSN control will meet the portable terminal of characteristic information at terminal to be migrated, and MSC/SGSN migrates to purpose MSC/SGSN from the source; Can comprise two kinds of concrete application scenarioss, a kind of concrete application scenarios is the purpose MSC/SGSN that load migration controlled entity does not specify portable terminal to be migrated to move to; Another kind of concrete application scenarios is that the purpose MSC/SGSN that portable terminal to be migrated need be moved to is specified by load migration controlled entity.
To first kind of concrete application scenarios, as shown in Figure 3, source MSC/SGSN controls the handling process that move at terminal to be migrated, comprises the steps:
S301, source MSC/SGSN finish after current business or position upgrade at portable terminal, and for portable terminal distributes and issues invalid TMSI, invalid TMSI can be the TMSI that comprises Null-NRI, or the TMSI of complete " 1 ";
The TMSI that S302, portable terminal receive updated stored after the invalid TMSI promptly deletes old TMSI and stores new TMSI, and the RNC/BSC through ownership returns TMSI to source MSC/SGSN and assigned message, wherein carries invalid TMSI;
S303, source MSC/SGSN have assigned message according to the TMSI that carries invalid TMSI, return connection refused message through the RNC/BSC that belongs to portable terminal;
S304, portable terminal initiate to carry the position renewal of IMSI (InternationalMobile Subscriber Identifier, IMSI International Mobile Subscriber Identity) according to the connection refused message that receives;
The RNC/BSC of S305, portable terminal ownership selects a MSC/SGSN as purpose MSC/SGSN in the MSC/SGSN pond, and sends location update request message to purpose MSC/SGSN;
S306, purpose MSC/SGSN are that portable terminal distributes an effective TMSI; This effective TMSI is included in the NRI value of ability unique identification purpose MSC/SGSN in the MSC/SGSN pond, and should be handed down to portable terminal by effective TMSI through the RNC/BSC of portable terminal ownership;
S307, portable terminal receive the TMSI of updated stored after the effective TMSI, and the RNC/BSC through ownership returns TMSI to purpose MSC/SGSN and assigned message, wherein carry effective TMSI;
S308, purpose MSC/SGSN have assigned message according to the TMSI that carries effective TMSI, upgrade to the portable terminal home position and accept message.
To second kind of concrete application scenarios, as shown in Figure 4, source MSC/SGSN controls a kind of handling process that move at terminal to be migrated, comprises the steps:
S401, source MSC/SGSN finish after current business or position upgrade at portable terminal, and for portable terminal distributes and issues invalid TMSI, invalid TMSI can be the TMSI that comprises Null-NRI, or the TMSI of complete " 1 ";
S402, portable terminal receive the TMSI of updated stored after the invalid TMSI, and the RNC/BSC through ownership returns TMSI to source MSC/SGSN and assigned message, wherein carry invalid TMSI;
S403, source MSC/SGSN have assigned message based on the TMSI that carries invalid TMSI; RNC/BSC through ownership returns connection refused message to portable terminal, and the purpose MSC/SGSN that need move to the RNC/BSC of portable terminal ownership notice portable terminal;
S404, portable terminal initiate to carry the position renewal of IMSI according to the connection refused message that receives;
The RNC/BSC of S405, portable terminal ownership sends location update request message to purpose MSC/SGSN;
S406, purpose MSC/SGSN are that portable terminal distributes an effective TMSI; This effective TMSI is included in the NRI value of ability unique identification purpose MSC/SGSN in the MSC/SGSN pond, and should be handed down to portable terminal by effective TMSI through the RNC/BSC of portable terminal ownership;
S407, portable terminal receive the TMSI of updated stored after the effective TMSI, and the RNC/BSC through ownership returns TMSI to purpose MSC/SGSN and assigned message, wherein carry effective TMSI;
S408, purpose MSC/SGSN have assigned message according to the TMSI that carries effective TMSI, upgrade to the portable terminal home position and accept message.
To second kind of concrete application scenarios, as shown in Figure 5, source MSC/SGSN controls the another kind of handling process that move at terminal to be migrated, comprises the steps:
S501, source MSC/SGSN finish after current business or position upgrade at portable terminal, and for portable terminal distributes and issues invalid TMSI, invalid TMSI can be the TMSI that comprises Null-NRI, or the TMSI of complete " 1 ";
S502, portable terminal receive the TMSI of updated stored after the invalid TMSI, and the RNC/BSC through ownership returns TMSI to source MSC/SGSN and assigned message, wherein carry invalid TMSI;
S503, source MSC/SGSN have assigned message according to the TMSI that carries invalid TMSI, return connection refused message through the RNC/BSC that belongs to portable terminal;
The purpose MSC/SGSN that S504, source MSC/SGSN need be moved to portable terminal sends migration request message, wherein carries the IMSI of portable terminal;
S505, purpose MSC/SGSN are based on the migration request message that receives; For portable terminal distributes an effective TMSI; This effective TMSI is included in the NRI value of ability unique identification purpose MSC/SGSN in the MSC/SGSN pond, and should be handed down to portable terminal by effective TMSI through the RNC/BSC of portable terminal ownership;
S506, portable terminal receive the TMSI of updated stored after the effective TMSI, and the RNC/BSC through ownership returns TMSI to purpose MSC/SGSN and assigned message, wherein carry effective TMSI;
S507, purpose MSC/SGSN have assigned message according to the TMSI that carries effective TMSI, return to portable terminal and accept message.
Load balance method in the realization pool area that the embodiment of the invention provides; Adopt the on-line file framework that the portable terminal that gets into pool area is moved; Unify the information on load of each network node in the pickup area pond and make the judgement whether each network node satisfies load migration entry condition by load migration controlled entity; Can make the all-network node that the satisfies load migration entry condition migration of loading simultaneously through judgement once; Do not need each network node in the pool area to broadcast and store the information on load of all-network node each other; Thereby promoted the speed and the validity that realize load balancing in the pool area, reduced network load and the influence of network node disposal ability;
Load balance method in the realization pool area that the embodiment of the invention provides; Through can fundamentally having solved the unbalanced problem of load in the pool area, the load balancing in the Rapid Realization pool area to the migration that gets into portable terminal in the pool area and two aspects of distribution that newly get into portable terminal in the pool area.
Based on same inventive concept; A kind of system that realizes load balancing in the pool area also is provided in the embodiment of the invention; Because load balance method is consistent in principle that this system deals with problems and the realization pool area; Therefore this system implementation can repeat part and repeat no more referring to the enforcement of method.
As shown in Figure 6, the system of load balancing in the realization pool area that the embodiment of the invention provides comprises:
Load moves controlled entity 601, is used for confirming according to the information on load of each network node of the same area pond the load balancing desired value of pool area; When the load balancing desired value of determining satisfies the load migration entry condition of setting, confirm to carry out the source network node of load migration and the characteristic information at terminal to be migrated according to the information on load of each network node;
In the practical implementation, load migration controlled entity can be arbitrary network node or the server in NMS, the pool area, or the like.
Further, load migration controlled entity 601, the source network node that also is used for determining is set to unloaded state, and the new portable terminal that gets into this pool area is distributed on the source network node in the load migration cycle to avoid; And when load migration end cycle, source network node is re-set as normal condition.
In the practical implementation, source network node 602 is further used for when the portable terminal of being administered is initiated the renewal of professional perhaps position, judging whether the characteristic information of portable terminal meets the characteristic information at terminal to be migrated; If the characteristic information of portable terminal meets the characteristic information at terminal to be migrated, then after portable terminal finished current business or position renewal, control migrated to the purpose network node with this portable terminal from source network node.
In the practical implementation; Load migration controlled entity 601; When also being used for confirming to carry out the characteristic information at source network node and terminal to be migrated of load migration according to the information on load of each network node; Confirm the purpose network node that terminal to be migrated needs are moved to according to the information on load of each network node, thereby be convenient to of the migration of source network node control portable terminal from source network node to the purpose network node.
Wherein, a kind of possibility structure of load migration controlled entity 601, as shown in Figure 7, comprising:
Collecting unit 701 is used for the information on load of each network node of pickup area pond;
Further, load migration controlled entity also comprises:
The unit is set, and the source network node that is used for determining is set to unloaded state, and the new portable terminal that gets into pool area is distributed on the source network node in the load migration cycle to avoid; And when load migration end cycle, source network node is re-set as normal condition.
In the practical implementation; Start unit 703; When also being used for confirming to carry out the characteristic information at source network node and terminal to be migrated of load migration, confirm the purpose network node that terminal to be migrated needs are moved to according to the information on load of each network node according to the information on load of each network node; And
If in the real network framework, load migration controlled entity and source network node are same physical entities, and then load migration controlled entity also can comprise:
Control unit was used in the load migration cycle of setting, and the portable terminal that control will meet characteristic information migrates to the purpose network node.
Validity for proof scheme; The scheme of load balancing is carried out analogue simulation in the realization pool area (is example with the MSC pond) that the embodiment of the invention is provided, and supposing has 6 MSC in the MSC pond, be respectively MSC1～MSC6; Before the scheme that the employing embodiment of the invention provides; The CP of each MSC load is shown in Fig. 8 a in the MSC pond, and after the scheme that the employing embodiment of the invention provides, the CP of each MSC load is shown in Fig. 8 b in the MSC pond.Can find out that through analogue simulation the scheme that the embodiment of the invention provides can effectively solve the unbalanced problem of load in the pool area.
It is apparent to those skilled in the art that the embodiment of the invention can be provided as method, system, equipment or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware.And the present invention can be employed in the form that one or more computer-usable storage medium comprising computer usable program code (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) go up the computer program of implementing.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1. realize load balance method in the pool area for one kind, it is characterized in that, comprising:
Adopt the on-line file framework, unify the information on load of each network node in the pickup area pond by load migration controlled entity;
Confirm the load balancing desired value of said pool area according to the information on load of each network node in the pool area;
When the load balancing desired value of determining satisfies the load migration entry condition of setting, confirm to carry out the source network node of load migration and the characteristic information at terminal to be migrated based on the information on load of each network node;
In the load migration cycle of setting, the portable terminal that source network node control will meet said characteristic information migrates to the purpose network node.
2. the method for claim 1 is characterized in that, also comprises:
The source network node of determining is set to unloaded state, and the new portable terminal that gets into said pool area is distributed on the said source network node in the load migration cycle to avoid; And
When said load moves end cycle, said source network node is re-set as normal condition.
3. according to claim 1 or claim 2 method is characterized in that, the portable terminal that said source network node control will meet said characteristic information migrates to the purpose network node, specifically comprises:
When source network node is initiated the renewal of professional perhaps position at the portable terminal of being administered, judge whether the characteristic information of said portable terminal meets the characteristic information at terminal to be migrated;
If the characteristic information of said portable terminal meets the characteristic information at terminal to be migrated, then after portable terminal finished current business or position renewal, control migrated to the purpose network node with said portable terminal from source network node.
4. method as claimed in claim 3; It is characterized in that; When confirming to carry out the characteristic information at source network node and terminal to be migrated of load migration according to the information on load of each network node, also confirm the purpose network node that terminal to be migrated needs are moved to according to the information on load of each network node.
5. method as claimed in claim 3 is characterized in that, said pool area is moving exchanging center MSC or service universal grouping wireless business supporting node SGSN pond; And
Said after portable terminal finishes current business or position renewal, control migrates to the purpose network node with said portable terminal from source network node, specifically comprises:
Source MSC or SGSN finish after current business or position upgrade at portable terminal, for portable terminal distributes and issues invalid Temporary Mobile Subscriber Identity TMSI;
Said portable terminal receives the TMSI of updated stored after the invalid TMSI, and returns TMSI to said source MSC or SGSN and assigned message, wherein carries invalid TMSI;
Said source MSC or SGSN have assigned message according to the TMSI that carries invalid TMSI and have returned connection refused message to said portable terminal;
Said portable terminal is based on the connection refused message that receives; Initiation is carried the position of IMSI International Mobile Subscriber Identity IMSI and is upgraded; The radio network controller (RNC) or the base station controller BSC of said portable terminal ownership select a MSC or SGSN as purpose MSC or SGSN in said MSC or SGSN pond, and send location update request message to said purpose MSC or SGSN;
Said purpose MSC or SGSN are the portable terminal distribution and issue effective TMSI;
Said portable terminal receives the TMSI of updated stored after the effective TMSI, and returns TMSI to said purpose MSC or SGSN and assigned message, wherein carries effective TMSI;
Said purpose MSC or SGSN have assigned message according to the TMSI that carries effective TMSI and have accepted message to said portable terminal home position renewal.
6. method as claimed in claim 4 is characterized in that, said pool area is moving exchanging center MSC or service universal grouping wireless business supporting node SGSN pond; And
Said after portable terminal finishes current business or position renewal, control migrates to the purpose network node with said portable terminal from source network node, specifically comprises:
Source MSC or SGSN finish after current business or position upgrade at portable terminal, for portable terminal distributes and issues invalid Temporary Mobile Subscriber Identity TMSI;
Said portable terminal receives the TMSI of updated stored after the invalid TMSI, and returns TMSI to said source MSC or SGSN and assigned message, wherein carries invalid TMSI;
Said source MSC or SGSN have assigned message according to the TMSI that carries invalid TMSI and have returned connection refused message to said portable terminal, and the purpose MSC or the SGSN that notify said portable terminal to move to the radio network controller (RNC) or the base station controller BSC of said portable terminal ownership;
Said portable terminal initiates to carry the position renewal of IMSI International Mobile Subscriber Identity IMSI according to the connection refused message that receives, and the RNC of said portable terminal ownership or BSC send location update request message to said purpose MSC or SGSN;
Said purpose MSC or SGSN are the portable terminal distribution and issue effective TMSI;
Said portable terminal receives the TMSI of updated stored after the effective TMSI, and returns TMSI to said purpose MSC or SGSN and assigned message, wherein carries effective TMSI;
Said purpose MSC or SGSN have assigned message according to the TMSI that carries effective TMSI and have accepted message to said portable terminal home position renewal.
7. method as claimed in claim 4 is characterized in that, said pool area is moving exchanging center MSC or service universal grouping wireless business supporting node SGSN pond; And
Said after portable terminal finishes current business or position renewal, control migrates to the purpose network node with said portable terminal from source network node, specifically comprises:
Source MSC or SGSN finish after current business or position upgrade at portable terminal, for portable terminal distributes and issues invalid Temporary Mobile Subscriber Identity TMSI;
Said portable terminal receives the TMSI of updated stored after the invalid TMSI, and returns TMSI to said source MSC or SGSN and assigned message, wherein carries invalid TMSI;
Said source MSC or SGSN have assigned message based on the TMSI that carries invalid TMSI and have returned connection refused message to said portable terminal; And, wherein carry the IMSI International Mobile Subscriber Identity IMSI of said portable terminal to purpose MSC or SGSN transmission migration request message that said portable terminal need be moved to;
Said purpose MSC or SGSN be according to the migration request message that receives, for portable terminal distributes and issues effective TMSI;
Said portable terminal receives the TMSI of updated stored after the effective TMSI, and returns TMSI to said purpose MSC or SGSN and assigned message, wherein carries effective TMSI;
Said purpose MSC or SGSN have assigned message according to the TMSI that carries effective TMSI and have returned to said portable terminal and accept message.
8. like claim 5,6 or 7 described methods, it is characterized in that the information on load of said each network node comprises the coprocessor CP load of each MSC or SGSN;
The load balancing desired value of said pool area comprises the variance yields or the maximum difference of the CP load of each MSC in MSC or the SGSN pond or SGSN;
Said load migration entry condition comprises the variance yields of CP load of each MSC or SGSN more than or equal to the variance yields thresholding of setting, and perhaps the maximum difference of the CP of each MSC or SGSN load is more than or equal to the difference threshold of setting.
9. method as claimed in claim 8; It is characterized in that; The source network node of confirming the migration of execution load is the corresponding MSC or the SGSN of maximum of CP load, confirms that the purpose network node that need move at terminal to be migrated is corresponding MSC or the SGSN of minimum value that CP loads, and
Confirm the method for the characteristic information at terminal to be migrated, specifically comprise:
Confirm maximum, mean value and the minimum of a value of CP load based on the CP load of each MSC or SGSN in MSC or the SGSN pond;
Confirm the quantity at terminal to be migrated through following formula, formula is specially:
Quantity=the min{ at terminal to be migrated [MSC that the maximum of (mean value of the maximum of CP load-CP load) * CP load the is corresponding or total capacity of SGSN]; [MSC that the minimum value of (minimum value of the mean value of CP load-CP load) * CP load the is corresponding or total capacity of SGSN] }, wherein min{} representes to get smaller value;
Confirm the migration ratio according to the quantity at terminal to be migrated and the total capacity of source MSC or SGSN, and confirm the characteristic information at terminal to be migrated according to the migration ratio.
10. a system that realizes load balancing in the pool area is characterized in that, comprising:
Load moves controlled entity, is used for confirming according to the information on load of each network node of the same area pond the load balancing desired value of said pool area; When the load balancing desired value of determining satisfies the load migration entry condition of setting, confirm to carry out the source network node of load migration and the characteristic information at terminal to be migrated according to the information on load of each network node;
Source network node was used in the load migration cycle of setting, and the portable terminal that control will meet said characteristic information migrates to the purpose network node.
11. system as claimed in claim 10 is characterized in that,
Said load migration controlled entity, the source network node that also is used for determining is set to unloaded state, and the new portable terminal that gets into said pool area is distributed on the said source network node in the load migration cycle to avoid; And when said load moves end cycle, said source network node is re-set as normal condition.
12. like claim 10 or 11 described systems, it is characterized in that,
Said source network node is further used for when the portable terminal of being administered is initiated the renewal of professional perhaps position, judging whether the characteristic information of said portable terminal meets the characteristic information at terminal to be migrated; If the characteristic information of said portable terminal meets the characteristic information at terminal to be migrated, then after portable terminal finished current business or position renewal, control migrated to the purpose network node with said portable terminal from source network node.
13. system as claimed in claim 12 is characterized in that,
Load migration controlled entity; When also being used for confirming to carry out the characteristic information at source network node and terminal to be migrated of load migration, confirm the purpose network node that to move at terminal to be migrated based on the information on load of each network node based on the information on load of each network node.
14. system as claimed in claim 10 is characterized in that,
Said load migration controlled entity is arbitrary network node or server in NMS, the said pool area.
15. a load migration controlled entity is characterized in that, comprising:
Collecting unit is used for the information on load of each network node of pickup area pond;
Confirm the unit, be used for confirming the load balancing desired value of said pool area according to the information on load of each network node of pool area;
Start unit is used for when the load balancing desired value of determining satisfies the load migration entry condition of setting, confirming to carry out the source network node of load migration and the characteristic information at terminal to be migrated according to the information on load of each network node;
Notification unit is used for the notification source network node and in the load migration cycle of setting, carries out the load migration, and with the characteristic information notification source network node at terminal to be migrated.
16. load migration controlled entity as claimed in claim 15 is characterized in that, also comprises:
The unit is set, and the source network node that is used for determining is set to unloaded state, and the new portable terminal that gets into said pool area is distributed on the said source network node in the load migration cycle to avoid; And when said load moves end cycle, said source network node is re-set as normal condition.
17. like claim 15 or 16 described load migration controlled entities, it is characterized in that,
Said start unit; When also being used for confirming to carry out the characteristic information at source network node and terminal to be migrated of load migration, confirm the purpose network node that terminal to be migrated needs are moved to according to the information on load of each network node according to the information on load of each network node; And
Said notification unit also is used for the purpose network node notification source network node that terminal to be migrated need be moved to.
18. load migration controlled entity as claimed in claim 15 is characterized in that, also comprises:
Control unit was used in the load migration cycle of setting, and the portable terminal that control will meet said characteristic information migrates to the purpose network node.
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