CN1856134A - Method for node load share of core network - Google Patents
Method for node load share of core network Download PDFInfo
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- CN1856134A CN1856134A CNA2005100671011A CN200510067101A CN1856134A CN 1856134 A CN1856134 A CN 1856134A CN A2005100671011 A CNA2005100671011 A CN A2005100671011A CN 200510067101 A CN200510067101 A CN 200510067101A CN 1856134 A CN1856134 A CN 1856134A
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Abstract
The invention is concerned with the method to achieves the control network node loading share, the method includes: the central network (CN) node in the pond area reports the loading information to the network manager (NM); the NM sends downward to the all CN node after collect the loading information of all the CN node, the CN node initiates the loading share according to the saving loading information when the CN node that receives the loading information saves the loading information to confirm processing loading share. According to the method of the invention, the NM sends the loading information that reported by the CN node in the pond area, in order that the CN node can get accurately the loading condition of other CN node in the pond area, initiates the loading sharing flow according to the loading condition of other CN node in the pond area, when needing to process loading share, needs not to add the new network equipment.
Description
Technical field
The present invention relates to the load balancing technology, be meant a kind of method that realizes that core network node load is shared especially.
Background technology
Radio Access Network (RAN is described in the 3GPP standard, Radio Access Network) node can with a plurality of core network (CN, Core Network) node links to each other, the RAN node can be base station controller (BSC, Basic Station Controller) or radio network controller (RNC, Radio NetworkController).Pool area (pool-area) is meant that (UE UserEquipment) can not need to change the zone of serving the CN node to the subscriber equipment that is in wherein roaming.One or more CN nodes provide service for being in a UE in the pool area concurrently, and the handling process of this pool area is shared jointly by these CN nodes.The CN node can be mobile switching centre (MSC, Mobile Switch Center) or service universal grouping wireless business supporting node (SGSN, Serving GPRS Support Node), and like this, pool area just correspondingly is called as MSC pond or SGSN pond.
Network resource identifier (NRI, Network Resource Identfier) but single CN node in pool area of unique identification.NRI is the interim mobile terminal identification (TMSI that service CN node is distributed to UE, Temporary Mobile Station Identity) or the interim mobile terminal identification (P-TMSI that divides into groups, Packet Temporary Mobile Station Identity) part, NRI occupy some bits (bit) position among the TMSI/P-TMSI.The spendable NRI of CN node is configurable.
Under the Iu pattern, when UE inserts, control (RRC to the Radio Resource that the RAN node sends, Radio Resource Control) Access Layer (AS of direct-sending message (RRC-Initial-Direct-Transfer), Access Stratum) part is filled in Non-Access Stratum node selector (IDNNS in the territory, Intra Domain NAS Node Selector) cell, the routing parameter that it is 10 bits that this IDNNS cell comprises a regular length, this routing parameter comprises V value or NRI.Also comprise a sign in the IDNNS cell, be used to indicate the source of routing parameter,, then comprise NRI in the routing parameter if routing parameter is derived by TMSI/P-TMSI; If routing parameter is to be derived by international mobile terminal identification (IMSI, International Mobile Station Identity), then comprise the V value in the routing parameter.The RAN node is according to the V value or the NRI that comprise in the IDNNS cell, will be from the forwards of UE to corresponding CN node.
At present, require under some situation duty ratio to be transferred to another CN node from a CN node more reposefully, these situations can be situations such as regular maintenance, CN node overload, though the 3GPP standard to the CN node initiate load balancing flow process, promptly a CN node is described the process of load migration to another CN node, but, owing to can't accurately know the loading condition of other CN nodes in its place pool area between the CN node at all, especially at each CN node during, make the load balancing flow process of initiating by the CN node as empty talk from different manufacturers.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that realizes that core network node load is shared, make the CN node can know the loading condition of other CN nodes in the pool area, thereby realize the load balancing of CN node effectively.
In order to achieve the above object, the invention provides a kind of method that realizes that core network node load is shared, the method includes the steps of:
Core network CN node in A, the pool area is to network manager NM load information reporting;
After B, NM gathered the load information of all CN nodes in the pool area, all the CN nodes in described pool area issued, and received that the CN node of load information is stored described load information;
C, when determining to carry out load balancing, the CN node is initiated load balancing according to the load information of storage.
Wherein, described steps A is: the CN node in the pool area is regularly to the NM load information reporting.
Wherein, all the CN nodes described in the step B in pool area issue, for: regularly all the CN nodes in pool area issue; Or be: when trigger event took place, all the CN nodes in pool area issued.
Wherein, described step C is: when NM determines to carry out load balancing, send the load balancing indication to the CN node, the CN node is initiated load balancing according to the load balancing indication of receiving and the load information of storage; Or described step C is: when the CN node was determined to carry out load balancing, this CN node was initiated load balancing according to the load information of storage.
Described load information comprises: the network resource identifier NRI of CN node and loading condition information.
The node of CN described in the step C is initiated load balancing according to the load information of storage and be may further comprise the steps:
After the CN node of C1, needs migration load is received the position updating request of user equipment (UE) transmission,, and provide this temporary mark to UE for UE redistributes the temporary mark that includes target CN node NRI;
C2, UE send the position updating request that carries described temporary mark to the RAN node, and the RAN node is forwarded to target CN node according to the NRI that comprises in the temporary mark with this position updating request;
After C3, target CN node are received position updating request, accept the position renewal that UE initiates.
The CN of target described in step C3 node is received and further comprised after the position updating request: target CN node notice attaching position register HLR upgrades the positional information of UE.
Upgrade if UE initiates the position in packet network, further comprise the NRI of the CN node of needs migration load in the then described temporary mark; Accept described in the step C3 before the position renewal of UE initiation, further comprise: target CN node is according to the NRI of the CN node of the needs migration load that comprises in the temporary mark, carry out obtaining block data protocol context information alternately with the CN node of needs migration load corresponding to UE.
According to the proposed method, the load information that NM reports each CN node in the pool area is handed down to the CN node in this pool area, make the CN node can accurately obtain the loading condition of other CN nodes in its place pool area, thereby when needs carry out load balancing, loading condition according to other CN nodes in the place pool area that gets access to is initiated the load balancing flow process, need not to increase the new network equipment, just can realize the load balancing of CN node rationally, effectively.
Description of drawings
Fig. 1 shows the annexation schematic diagram of NM and CN node;
Fig. 2 shows and realizes CN node load share flow chart among the present invention;
Fig. 3 shows that SGSN carries out the load migration flow chart in the packet domain.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Because each node can be to network manager (NM in the communication network, Network Manager) reports the performance statistics of this node, at least comprise load information in this performance statistics, like this, NM just can accurately be known the load information of each CN node in the pool area, real-time beared information as each CN node in the pool area, therefore, among the present invention, the load information that NM reports each CN node in the pool area is handed down to the CN node in this pool area, make the CN node can accurately obtain the loading condition of other CN nodes in its place pool area, thereby when needs carry out load balancing, initiate the load balancing flow process according to the loading condition of other CN nodes in the place pool area that gets access to.
Fig. 1 shows the annexation schematic diagram of NM and CN node, and as shown in Figure 1, NM links to each other with each MSC in the MSC pond, links to each other with each SGSN in the SGSN pond, and MSC or SGSN report the load information of this node to NM.After NM received the load information of each MSC in the MSC pond, each MSC issued the load information of other MSC in this MSC pond in the MSC pond; When MSC determines to carry out load balancing, initiate the load balancing flow process according to the loading condition of other MSC in the MSC pond, place that gets access to.Similarly, after NM received the load information of each SGSN in the SGSN pond, each SGSN issued the load information of other SGSN in this SGSN pond in the SGSN pond; When SGSN determines to carry out load balancing, initiate the load balancing flow process according to the loading condition of other SGSN in the SGSN pond, place that gets access to.NM can transmit by the standard interface between NM and MSC or the SGSN to the load information that MSC or SGSN issue.
Fig. 2 shows and realizes CN node load share flow chart among the present invention, and as shown in Figure 2, the process of carrying out the CN node load share may further comprise the steps:
Step 201: each CN node reports the load information of this node in the pool area to NM.The CN node can regularly report the load information of this node to NM, also can report the load information of this node to NM after the CN node receives that the load information of NM reports indication.Carry the NRI and the loading condition information of CN node in the described load information, loading condition information can be CN node fully loaded percentage, maximum number of user amount, active user's quantity, CPU congestion situation etc.
After step 202:NM received the load information of each node in the pool area, each CN node issued the load information of other CN nodes in this pool area in pool area; NM can be further gathers the load information of all CN nodes in the pool area, and then each CN node issues in pool area.NM can be regularly in pool area each CN node issue the load information of other CN nodes in this pool area; When also but trigger event took place, each CN node issued the load information of other CN nodes in this pool area in pool area, and this trigger event can be NM issues each CN node according to the operation indication load information; Also can be NM according to the CN node load information that gets access to, determine that certain CN node load issues the load information of each CN node when overweight.
Step 203:CN node is stored the load information of each the CN node in the place pool area of receiving, NM issues.
Step 204: when determining to carry out load balancing, the CN node is initiated the load balancing flow process according to the load information of other CN nodes in the place pool area of storage.Can need determine whether load balancing by NM or CN node, if for NM determines to carry out load balancing, then NM sends the load balancing indication to the CN node of needs migration load, and the CN node is initiated the load balancing flow process according to the load balancing indication of receiving.For example, NM determines whether that according to operation indication needs carry out load balancing, and the operation of receiving as NM is designated as the load on certain CN node is all migrated on other CN nodes in the pool area of place; Or determine whether that according to the load information of each CN node in the pool area needs carry out load balancing, and having reached fully loaded 85% as the load of certain CN node, need carry out load balancing this moment; Or the CN node is according to the load information of other CN nodes in the place pool area of the loading condition of this node and storage, determine whether to carry out load balancing, the load of determining this node as certain CN node has reached fully loaded 80%, show that the load of another CN node is a fully loaded 10% in the load information of other CN nodes in the pool area of storage, need carry out load balancing this moment.
The CN node that below will need to move load is called source CN node, and the CN node of accepting source CN node load is called target CN node, below the CN node is initiated the load balancing flow process is described.
In the circuit domain, be that UE initiates the position renewal in circuit network, source MSC receives by after the RNC position updating request that transmit, from UE, definite needs carry out load balancing, source MSC can be according to the load information of other MSC in the MSC pond, place of storage, the MSC that selects wherein load minimum is as target MSC, or the MSC that selects a load not reach to set percentage at full capacity arbitrarily is as target MSC, never reaches as source MSC among the MSC of fully loaded 50% to select a MSC as target MSC arbitrarily; Source MSC carries out TMSI and redistributes flow process, and the TMSI that makes UE know to redistribute includes the NRI of target MSC among this TMSI that redistributes; The position of source MSC refusal UE initiation is upgraded then, upgrades response to the UE home position, and this position carries the error cause value in upgrading and responding; UE sends position updating request to RNC after receiving that response is upgraded in this position, carries the TMSI that redistributes in this position updating request; After RNC receives position updating request, according to the NRI that comprises among the TMSI that carries in this position updating request, this position updating request is forwarded to target MSC corresponding to this NRI, and target MSC is accepted the position updating request of UE, and notice HLR upgrades the positional information of UE; In the subsequent process, when UE carries out business, provide service for UE, thereby realize the load balancing of MSC by target MSC.
In the packet domain, be that UE initiates the position renewal in packet network, by defining different P-TMSI, make when the user initiates the position renewal, can migrate to target SGSN by source SGSN according to relevant context, and relevant user's carrying migrated to target SGSN by source SGSN, the specific implementation process as shown in Figure 3:
Step 301～step 302:UE passes through the RAN node after source SGSN sends position updating request, definite needs carry out load balancing, source SGSN redistributes the P-TMSI of UE, include the NRI of target SGSN and the NRI of source SGSN among this P-TMSI that redistributes, source SGSN can be according to the load information of other SGSN in the SGSN pond, place of storage, the SGSN that selects wherein load minimum is as target SGSN, or the SGSN that selects a load not reach to set percentage at full capacity arbitrarily is as target SGSN, never reaches as source SGSN among the SGSN of fully loaded 30% to select a SGSN as target SGSN arbitrarily; Source SGSN upgrades response to the UE home position then, and this position was upgraded and carried in the response P-TMSI that redistributes and very little position update cycle, as 0.1 second.
Step 303:UE upgrades the position update cycle of carrying in the response according to the position after receiving that response is upgraded in the position, sends position updating request to the RAN node when this position update cycle expires, and carries the P-TMSI that redistributes in this position updating request; After the RAN node is received position updating request,, this position updating request is forwarded to target SGSN according to the NRI of the target SGSN that comprises among the P-TMSI that carries in this position updating request.
Step 304～step 305: after target SGSN is received position updating request, NRI according to the source SGSN that comprises among the P-TMSI that carries in this position updating request, carry out alternately with source SGSN, to obtain block data protocol context (PDP Context corresponding to UE, Packet Data ProtocolContext) information, and target SGSN notice Home Location Register (HLR, Home LocationRegister) upgrades the positional information of UE.
After step 306:HLR had upgraded the positional information of UE, notification source SGSN deletion was corresponding to the relevant location information of UE.
Step 307:SGSN upgrades response by the RAN node to the UE home position, and notice UE has accepted the position of its initiation and upgraded, and in the subsequent process, when UE carries out business, provides service by SGSN to UE, thereby realizes the load balancing of SGSN.This step also can just be carried out after execution of step 304 or step 305 immediately.
There is not tangible execution sequence between step 306 and the step 307, can first execution in step 306, execution in step 307 again; Also can first execution in step 307, execution in step 306 again; Also can while execution in step 306 and step 307.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (9)
1, a kind of method that realizes that core network node load is shared is characterized in that the method includes the steps of:
Core network CN node in A, the pool area is to network manager NM load information reporting;
After B, NM gathered the load information of all CN nodes in the pool area, all the CN nodes in described pool area issued, and received that the CN node of load information is stored described load information;
C, when determining to carry out load balancing, the CN node is initiated load balancing according to the load information of storage.
2, method according to claim 1 is characterized in that,
Described steps A is: the CN node in the pool area is regularly to the NM load information reporting.
3, method according to claim 1 is characterized in that, all the CN nodes described in the step B in pool area issue, for: regularly all the CN nodes in pool area issue; Or be: when trigger event took place, all the CN nodes in pool area issued.
4, method according to claim 1 is characterized in that, described step C is: when NM determines to carry out load balancing, send the load balancing indication to the CN node, the CN node is initiated load balancing according to the load balancing indication of receiving and the load information of storage.
5, method according to claim 1 is characterized in that, described step C is: when the CN node was determined to carry out load balancing, this CN node was initiated load balancing according to the load information of storage.
6, according to the arbitrary described method of claim 1 to 5, it is characterized in that described load information comprises: the network resource identifier NRI of CN node and loading condition information.
According to the arbitrary described method of claim 6, it is characterized in that 7, the node of CN described in the step C is initiated load balancing according to the load information of storage and be may further comprise the steps:
After the CN node of C1, needs migration load is received the position updating request of user equipment (UE) transmission,, and provide this temporary mark to UE for UE redistributes the temporary mark that includes target CN node NRI;
C2, UE send the position updating request that carries described temporary mark to the RAN node, and the RAN node is forwarded to target CN node according to the NRI that comprises in the temporary mark with this position updating request;
After C3, target CN node are received position updating request, accept the position renewal that UE initiates.
8, method according to claim 7 is characterized in that, the CN of target described in step C3 node is received and further comprised after the position updating request: target CN node notice attaching position register HLR upgrades the positional information of UE.
9, method according to claim 7 is characterized in that, if initiating the position in packet network, upgrades UE,
The NRI that further comprises the CN node of needs migration load in the then described temporary mark;
Accept described in the step C3 before the position renewal of UE initiation, further comprise: target CN node is according to the NRI of the CN node of the needs migration load that comprises in the temporary mark, carry out obtaining block data protocol context information alternately with the CN node of needs migration load corresponding to UE.
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| CNB2005100671011A CN100372396C (en) | 2005-04-18 | 2005-04-18 | Method for node load share of core network |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011150555A1 (en) * | 2010-06-02 | 2011-12-08 | 中兴通讯股份有限公司 | Method, system and network device for load balancing among network nodes |
| CN101730201B (en) * | 2008-10-10 | 2012-06-06 | 大唐移动通信设备有限公司 | Destination node selection method and device based on loading information |
| CN101925123B (en) * | 2009-06-12 | 2012-12-12 | 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 |
| CN103533063A (en) * | 2013-10-18 | 2014-01-22 | 北京华胜天成科技股份有限公司 | Method and device capable of realizing dynamic expansion of WEB (World Wide Web) application resource |
| US8972593B2 (en) | 2010-03-09 | 2015-03-03 | Huawei Technologies Co., Ltd. | Load sharing method, load sharing system and access server |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1127273C (en) * | 1999-09-09 | 2003-11-05 | 深圳市中兴通讯股份有限公司 | Overload control method implemented in application layer of mobile switch center |
| US20030028644A1 (en) * | 2001-08-02 | 2003-02-06 | Patrick Maguire | System and method for load sharing within a core network |
| ATE505920T1 (en) * | 2001-08-24 | 2011-04-15 | Ericsson Telefon Ab L M | METHOD AND MEANS FOR REDISTRIBUTING SUBSCRIBER INFORMATION IN UMTS NETWORKS IN WHICH THE NODES ARE ARRANGE IN POOLS |
| NO20014865D0 (en) * | 2001-10-05 | 2001-10-05 | Ericsson Telefon Ab L M | Optimization of handover procedures in GPRS |
| CN1283115C (en) * | 2003-06-03 | 2006-11-01 | 华为技术有限公司 | Method and system for improving multimedia message performance process by multimedia message system |
| CN1281095C (en) * | 2003-12-16 | 2006-10-18 | 中兴通讯股份有限公司 | A method for supporting large capacity call process in BSC system by multi-module MSC |
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2005
- 2005-04-18 CN CNB2005100671011A patent/CN100372396C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730201B (en) * | 2008-10-10 | 2012-06-06 | 大唐移动通信设备有限公司 | Destination node selection method and device based on loading information |
| CN101925123B (en) * | 2009-06-12 | 2012-12-12 | 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 |
| US8972593B2 (en) | 2010-03-09 | 2015-03-03 | Huawei Technologies Co., Ltd. | Load sharing method, load sharing system and access server |
| WO2011150555A1 (en) * | 2010-06-02 | 2011-12-08 | 中兴通讯股份有限公司 | Method, system and network device for load balancing among network nodes |
| CN103533063A (en) * | 2013-10-18 | 2014-01-22 | 北京华胜天成科技股份有限公司 | Method and device capable of realizing dynamic expansion of WEB (World Wide Web) application resource |
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