CN100433658C - Method and system for implementing automatic load redistributing - Google Patents
Method and system for implementing automatic load redistributing Download PDFInfo
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- CN100433658C CN100433658C CNB2006101093460A CN200610109346A CN100433658C CN 100433658 C CN100433658 C CN 100433658C CN B2006101093460 A CNB2006101093460 A CN B2006101093460A CN 200610109346 A CN200610109346 A CN 200610109346A CN 100433658 C CN100433658 C CN 100433658C
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Abstract
The invention discloses a method for implementing automatic load reallocation, comprising: when CN node starts unloading, informing RAN node; RAN node sets status corresponding to the CN node according to unloading information carried in the received notice and returns response to the CN node, and when the response the setting result information carried in the response received by the CN node shows success, entering the unloading status. And the invention also discloses a system for implementing automatic load reallocation. By setting unloading start/stop threshold, it automatically starts the unloading course according to the current load status, and besides, by unloading course starting interaction of Iu interfaces, it shortens delay caused by artificial interference and larges reduces maintenance costs of manpower and material resources.
Description
Technical field
The present invention relates to the heavy distribution technique of load, refer to especially under a kind of Iu-Flex networking, realize the method and system of automatic load reallocation.
Background technology
Third generation partner program (3GPP) version 5 (REL5) support the Iu-Flex characteristic, Radio Access Network (RAN) node such as radio network controller (RNC) or base station controller (BSC) can connect mobile switching centre (MSC) in a plurality of core net (CN) node such as circuit switching (CS) territory and the Serving GPRS Support Node (SGSN) in packet switching (PS) territory.For Iu-Flex (Routingfunctionality for intra domain connection of RAN nodes to multiple CN nodes), the meaning probably is meant " being applied to the routing function that is connected between a plurality of CN nodes within RAN node and the same CN territory ", and those skilled in the art are direct use Iu-Flex usually.A pool area is formed in the zone that several RAN cover, and a pool area provides service concurrently by several CN nodes usually, also can provide service by a CN node.When a pool area provided service concurrently by several CN nodes, it was MSC pond or SGSN pond that these CN nodes are promptly formed a CN node pool, the notion of the pool area that Here it is says usually.
Fig. 1 is a network topology structure schematic diagram of supporting Iu-Flex, as shown in Figure 1, the RAN node service area that connects some MSC/SGSN jointly is the set of all sub-districts of RNC control, constitutes CS Chi Qu/PS Chi Qu respectively, wherein, the set of corresponding MSC/SGSN is exactly MSC pond/SGSN pond.
For CN node of sign in a CN node pool, each CN node is assigned with one or several network resource identifiers (NRI), and by Operation and Maintenance (O﹠amp; M) operation is configured in the NRI that distributes in the CN node.When the CN node is certain user terminal (UE) distribution Temporary Mobile Subscriber Identity (TMSI) or packet TMSI (P-TMSI), simultaneously the NRI of this CN node sign is carried at and sends to this UE among the TMSI/P-TMSI, specify a CN that service is provided so just for this UE, this CN can be called service CN.Here, if the CN node is MSC, then be UE distribution T MSI; If the CN node is SGSN, then distribute P-TMSI for UE.
Because MSC and SGSN in the district of pond all can provide service for the user, therefore, in the UE access procedure, when RNC receives initial direct-sending message from UE, carry out the selection of MSC/SGSN node, promptly based on routing parameter in the initial direct-sending message such as IDNNS information, and the configuration information among the RNC, one of them MSC or SGSN selected.In the 3GPP standard, the function of determining the process correspondence of service CN node is called Non-Access Stratum (NAS) node selection function (NNSF), is called initial NAS message route usually again.
Here, the IDNNS information of carrying in the initial direct-sending message can be from TMSI, or P-TMSI, or IMSI International Mobile Subscriber Identity (IMSI), or derives in the International Mobile Station Equipment Identification (IMEI).If there is available TMSI/P-TMSI, then UE preferentially derives routing parameter from TMSI/P-TMSI; If there is not available TMSI/P-TMSI, then UE calculates routing parameter based on IMSI; If it is that UE can't obtain IMSI that GSM subscriber identity module/universal subscriber identity module (SIM/USIM) does not exist, then UE calculates routing parameter based on IMEI.Before UE sent initial direct-sending message, UE will be based on mentioned above principle, and filling in IDNNS information is the TMSI/P-TMSI routing parameter, or the IMSI routing parameter, or the IMEI routing parameter.
In order to obtain the TMSI/P-TMSI routing parameter, related specifications is expanded TMSI/P-TMSI, is that bit14 to bit23 distributes to the NRI use with 10 bits (bit) among 32 the TMSI/P-TMSI, and table 1 is the position of NRI in TMSI/P-TMSI.UE derives NRI and is carried in the initial direct-sending message as IDNNS information from TMSI/P-TMSI; And in RNC, when operator carries out the network planning, disposed the configuration information of each self-corresponding NRI respectively for all MSC/SGSN.Like this, RNC can find service CN node according to NRI in the initial direct-sending message and the configuration information among the RNC, finishes the route of the initial NAS message of UE.
Table 1
In order to obtain the IMSI/IMEI routing parameter, UE calculates the V value according to following formula (1), and with this V value as IDNNS information, in the formula (1), div represents division arithmetic, mod represents modulo operation.The V value is the integer value that belongs in [0..999] scope; And in RNC, according to carrier network planning, the corresponding relation between the different range of configuration V value and the different CN nodes.Like this, RNC can find service CN node according to V value in the initial direct-sending message and the described corresponding relation among the RNC, finishes the route of the initial NAS message of UE.
V＝(IMSI/IMEI?div?10)mod?1000 (1)
In addition, have two kinds of main conditions to represent not carry effective routing parameter in the initial direct-sending message from UE: (1) RNC can not find corresponding CN node according to NRI, perhaps finds corresponding CN node but this CN node is unavailable; (2) carry the IMSI/IMEI routing parameter in the initial direct-sending message, but RNC can not find corresponding CN node according to the V value, perhaps find corresponding CN node but this CN node is unavailable.In this case, RNC will be according to the load balancing principle, select in self configuration information or the corresponding relation an available CN node as service CN node go forward side by side walking along the street by.
In proper network operation process; because mobile subscriber's roaming behavior; for example; carry the TMSI/P-TMSI that MSC/SGSN distributes in the ownership CN node pool through the user that some appears in regular meeting and enter roaming Chi Qu; and the RNC of roaming in the district of pond carries TMSI/P-TMSI according to UE and can not find corresponding CN node to carry out route; at this moment, RNC can only carry out route according to the load balancing principle.Like this, after a period of time, along with these roamers leave Chi Qu/enter the accumulative effect of pond district process, it is seriously unbalanced to cause roaming in the district of pond different CN node loads.Therefore, 3GPP REL6 standard has proposed the heavy distribution function of load, makes the higher CN node of load a part of user wherein can be transferred to other CN node in the district of pond.
The heavy distribution function of load has been introduced two important signs: empty NRI (null-NRI) and Non-broadcast Location Area Identification/Routing Area Identifier (Non-broadcast LAI/RAI).Wherein, null-NRI is the unique identification of public land mobile net network (PLMN) scope, by operator's unified planning in whole network, do not have fixing corresponding relation between this null-NRI and the CN node, but need in RNC and CN node, dispose this null-NRI information; Non-broadcast LAI/RAI has uniqueness in the district of a pond, and and the pond district in the CN node between have one-to-one relationship, wherein, Non-broadcast LAI is corresponding one by one with certain MSC, Non-broadcast RAI is corresponding one by one with certain SGSN.All CN nodes all need to dispose the corresponding relation of other CN node and Non-broadcastLAI/RAI in this pond district in the district of pond.Can no longer describe in detail here referring to 23.236 standard relevant regulations about specific definition null-NRI and Non-broadcast LAI/RAI.
According to the 3GPP standard, when network operation mode (NMO) is " 2 ", when promptly not having Gs interface between MSC and the SGSN, the heavy assigning process of the load of MSC and SGSN is independently carried out, and processing procedure is basic identical; Work as NMO=1, when promptly having Gs interface between MSC and the SGSN, the load of MSC heavily distributes by SGSN corresponding on the Gs interface to be initiated.The heavy assigning process of the load of MSC is that example is described the implementation method that existing load heavily distributes during below with NMO=2, and this moment, the CN node was the MSC node, comprised following several aspect:
(1) on MSC, personnel carry out O﹠amp by webmaster; The heavy assigning process of load is initiated in the M order, makes the MSC node enter unloading (off-load) state; On RNC, also need the collaborative O﹠amp of execution simultaneously by the webmaster personnel; The state that M order, correspondence enter the MSC node of unloaded state is set to and unloads corresponding state.
(2) next, the time be about two lane place (LA) update cycles or longer after, to carrying out the UE that LA upgrades, the MSC node that is in unloaded state upgrades at the LA that returns to UE accepts to carry in the message the new TMSI that comprises null-NRI, and Non-broadcast LAI, initiate the LA update request immediately once more to trigger UE, and fill in null-NRI in the IDNNS information of in the LA update request, carrying, in the LA update request, carry Non-broadcast LAI simultaneously; And being carried out the heavy assigning process of TMSI, remaining users promptly redistributes null-NRI and Non-broadcast LAI, here remaining users mainly refers to be in the UE of connection status always, when the UE as remaining users leaves connection status, can initiate the LA update request immediately, and fill in null-NRI in the IDNNS information of in the LA update request, carrying, carry Non-broadcast LAI simultaneously.
(3) after RNC receives the LA update request, resolve the routing parameter that carries in the LA update request, find to carry null-NRI in this request, then search the current MSC that is in unloaded state, according to the related specifications regulation, before the execution load heavily distributed, the attendant can pass through O﹠amp; The M order, the state of carrying out the MSC of unloading operation on RNC is set to unloaded state, and the MSC that is in unloaded state may be one or more.So RNC passes through O﹠amp at the LA update request of carrying null-NRI; M order is carried out NNSF functions at all MSC nodes available and that be in non-unloaded state, and is sent NAS message to these MSC nodes that are in non-unloaded state.
(4) receive that the MSC node of NAS message is according to the Non-broadcastLAI that carries in this NAS message; know UE initiate LA upgrade before under the MSC node, and obtain information such as necessary context such as IMSI, integrity protection key, encryption key etc. to this MSC node.
Why need that the CN side carries out that load heavily distributes the time, the collaborative CN node to the correspondence unloading of RAN side attendant carries out relative set, be because, based on the regulation of 3GPP REL ' 6 23.236 standards to the heavy assigning process of load, the user can not be assigned on the CN node that is unloading, in order to allow RNC learn whether the CN node is in unloaded state, the state of CN node must be set simultaneously by RAN side attendant, indication corresponding C N node is in unloaded state.
But, because CN side network management system is normally separated with RAN side network management system, and the attendant by the different departments of operator safeguards respectively, CN side attendant carries out load and heavily divides timing, must notify RAN side attendant by means of communication, increase the maintenance cost of man power and material aspect so undoubtedly; The more important thing is that the attendant of CN side network management system and RAN side network management system operate miss occurs probably in the co-operation process, will cause the failure of the heavy assigning process of whole load, reduced the quality that load heavily distributes, thereby introduced serious consequence.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes automatic load reallocation, and the quality of can proof load heavily distributing is saved maintenance cost simultaneously.
Another object of the present invention is to provide a kind of system that realizes automatic load reallocation, the quality of can proof load heavily distributing is saved maintenance cost simultaneously.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method that realizes automatic load reallocation, this method may further comprise the steps:
A. when core net CN node starts unloading, notify Radio Access Network RAN node;
The B.RAN node is according to the unloading information of carrying in the notice that receives, and is provided with state that should the CN node, and returns response to this CN node;
C. in the response that the CN node receives, carry object information be set be shown as successfully the time, the CN node enters unloaded state, realizes automatic load reallocation.
Set in advance and be used for the unloading startup thresholding that the CN node judges whether to start uninstall process;
The method that the node of CN described in the steps A starts unloading is: when the present load of described CN node is higher than default unloading enabling gate in limited time, start uninstall process.
The method of the RAN of notice described in steps A node is:
Described CN node will comprise that indication starts/the unloading sign that stops to unload, and the unloading information of the overall identification of described CN node, be carried in the unload request message that sets in advance, and send to described RAN node; Described unload request message is by the Iu interactive interfacing, and described Iu interface is described CN node and the internodal interface of RAN;
Described unloading sign is shown as startup.
Step B specifically comprises:
The state of the CN node of the overall CN node identification correspondence that B1. described RAN node receives is set to unloaded state, and returns the unloading response message that sets in advance to this CN node, and the object information that is provided with that carries in this unloading response message is shown as successfully;
Described unloading response message is by the Iu interactive interfacing, and described Iu interface is described CN node and the internodal interface of RAN.
Described unloading information also comprises: abortive haul network resource identification null-NRI.
Step B specifically comprises: described RAN node judges in the unload request message that receives whether carry null-NRI, if do not carry null-NRI, the state of the CN node of the overall CN node identification correspondence that then described RAN node receives is set to unloaded state, and return the unloading response message that sets in advance to this CN node, and the object information that is provided with that carries in this unloading response message is shown as successfully;
If carry, then described RAN node judges that this null-NRI is whether consistent with self pre-configured null-NRI, if it is inconsistent, then described RAN node returns the unloading response message to the CN node of the overall CN node identification correspondence that receives, the object information that is provided with that carries in this unloading response message is shown as failure, and failure cause is that null-NRI is inconsistent; If it is consistent, the state of the CN node of the overall CN node identification correspondence that then described RAN node receives is set to unloaded state, and return the unloading response message to this CN node, and the object information that is provided with that carries in this unloading response message is shown as successfully, afterwards execution in step C.
Set in advance and be used for the CN node and judge whether that the unloading that stops uninstall process stopping thresholding; After described CN node entered unloaded state, this method also comprised:
When the present load of described CN node is lower than that default unloading stops thresholding and during for unloaded state, stops uninstall process.
The described method that stops uninstall process is: after described CN node reaches the unloading stop condition, to comprise that indication starts/the unloading sign that stops to unload, and the unloading information of the overall identification of described CN node, be carried in the unload request message, send to described RAN node;
Described unloading sign is shown as and stops;
The state of the CN node of the overall CN node identification correspondence that described RAN node receives is set to non-unloaded state, and returns the unloading response message to this CN node.
This method also comprises: the Operation and Maintenance O﹠amp that keeps existing startup/stop to unload in described CN node and/or the RAN node; The M order.
A kind of system that realizes automatic load reallocation, this system comprise core net CN node and Radio Access Network RAN node; Wherein,
The CN node is used for when starting unloading, sends to the RAN node to start the unloading notice; Receive when being shown as successfully, enter unloaded state from the response of RAN node and this response;
The RAN node receives the startup unloading notice from the CN node, is provided with state that should the CN node, and returns response to this CN node.
Described CN node also is used for to described RAN node transmission stopping unloading notice;
Described RAN node receives from the unloading that stops of CN node and notifies, and the state of the CN node of correspondence is set to non-unloaded state, and sends the unloading response message to this CN node.
The Operation and Maintenance O﹠amp that keeps existing startup/stop to unload in described CN node and/or the RAN node; The M order.
Described CN node and RAN node belong to same Chi Qu.
Described CN node is: moving exchanging center MSC node, or Serving GPRS Support Node SGSN node;
Described RAN node is: radio network controller (RNC), or base station controller BSC.
Described CN node belongs to same or different operators.
As seen from the above technical solution, the inventive method starts/stops by configuration and unloads thresholding, automatically start/stop uninstall process according to the present load state, simultaneously, startup by the Iu interface/stop the mutual of uninstall process, no matter CN node automatic or manual starts uninstall process, do not need RAN side attendant's intervention, like this, not only shortened the delay that manual intervention is introduced, avoid the interdepartmental co-operation error of operator and the risk of introducing, and greatly reduced man power and material's maintenance cost.
Further, the inventive method and existing method complement each other, and have realized that better load heavily distributes.
Description of drawings
Fig. 1 is a network topology structure schematic diagram of supporting Iu-Flex;
Fig. 2 is the flow chart of the inventive method.
Embodiment
Core concept of the present invention is: when the CN node starts unloading, and notice RAN node; The RAN node is according to the unloading information of carrying in the notice that receives, and is provided with state that should the CN node, and returns response to this CN node, in the response that the CN node receives, carry object information be set be shown as successfully the time, enter unloaded state.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing preferred embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 2 is the flow chart of the inventive method, according to the agreement regulation, disposes the overall CN node identification of all CN nodes in null-NRI, the CN pond district and the corresponding relation of Non-broadcast LAI on the CN node, and the inventive method may further comprise the steps:
Step 200: when the CN node starts unloading, notice RAN node.
In this step, the method whether CN node such as MSC node or SGSN node start unloading is: set in advance and be used for the unloading that the CN node judges whether to start uninstall process and start thresholding, when the present load of CN node is higher than default unloading enabling gate in limited time, start uninstall process.When adopting grade to represent such as load, it is a certain grade that unloading starts thresholding.
Simultaneously, the CN node by and RAN node such as RNC or BSC between the Iu interface, adopt newly-installed unload request (OFF-LOAD REQUEST) message informing RAN node.The unloading information of carrying in this unload request message comprises that indication starts/the unloading sign, the CN node overall identification that stop to unload, at this moment, unloading sign value for start, CN node overall identification is this CN node ground overall identification.This unloading information can further include null-NRI.
Step 201:RAN node is according to the unloading information of carrying in the notice that receives, and is provided with state that should the CN node, and returns response to this CN node.
After the RAN node is received unload request message, at first check in this unload request message and whether carry null-NRI, if do not carry null-NRI, what then the null-NRI that disposes in the RAN node acquiescence CN node disposed with self is consistent, and the state of the CN node of the overall CN node identification correspondence of carrying in the unload request message is set to unloaded state, and return unloading response (OFF-LOADRESPONSE) message to this CN node, and the object information that is provided with that carries in this unloading response message is shown as successfully;
If carry null-NRI, then the RAN node judges further whether this null-NRI that carries is consistent with the null-NRI that self disposes, if it is inconsistent, then the CN node of the RAN node overall CN node identification correspondence of carrying in the unload request message that receives returns the unloading response message, the object information that is provided with that carries in this unloading response message is shown as failure, and failure cause is that null-NRI is inconsistent; If it is consistent, then the state of the CN node of the overall CN node identification correspondence of carrying in the unload request message that the RAN node receives is set to unloaded state, and return the unloading response message to this CN node, and the object information that is provided with that carries in this unloading response message is shown as successfully.
In this step, the unloading response message is the newly-increased message on the internodal Iu interface of CN node and RAN.
Step 202: in the response that the CN node receives, carry object information be set be shown as successfully the time, enter unloaded state.
The CN node is checked the object information that is provided with that carries in this unloading response message after receiving unloading response message from the RAN node, if be shown as successfully, then self enters unloaded state; Otherwise, check failure cause, if failure cause is that null-NRI is inconsistent, then alarm is as passing through network management system display alarm etc.
Need to prove that if the RAN node of corresponding certain CN node is more than one in the district of pond, so, this CN node need carry out the flow process of automatic load reallocation shown in Figure 2 with all RAN node in this pond district.
Further, the inventive method also comprises: set in advance and be used for the CN node and judge whether that the unloading that stops uninstall process stopping thresholding, when adopting grade to represent such as load, it is a certain grade that unloading stops thresholding.When the present load of CN node is lower than that default unloading stops thresholding and during for unloaded state, stops uninstall process, detailed process comprises:
After the CN node reaches the unloading stop condition, after waiting for that one period short time of delay is as 5 seconds, send unload request message to the RAN node, at this moment, the unloading information of carrying in this unload request message comprises that value is unloading sign, this CN node overall identification that stops; Need to prove that the setting of described time of delay mainly is in order to prevent ping-pong, it postpones duration and depends on the realization of different vendor to load control, and the present invention does not limit the duration of this time of delay.
After the RAN node is received unload request message, stop because the unloading sign is shown as, the state of the CN node of then overall CN node identification correspondence is set to non-unloaded state, afterwards, returns the unloading response message to this CN node.
Further, the inventive method also comprises: the existing startup of reservation in the CN node/stop the unloading order, as under the normal situation of CN node load, can pass through O﹠amp; M order starting/stop unloading.
In addition, not supporting the RAN node of Iu interface unloading reciprocal process at some, or in all RAN nodes, keep existing startup/stop the unloading order, is unloaded state with the state that corresponding CN node is set.
From the inventive method as seen, the CN node disposes by thresholding, starts/stop uninstall process automatically according to the present load state, has not only shortened the delay that manual intervention is introduced, eliminate the risk that the manual operation error is introduced, and greatly reduced man power and material's maintenance cost.
Startup by the Iu interface/stop the mutual of uninstall process, no matter CN node automatic or manual starts uninstall process, do not need RAN side attendant's intervention, eliminated the risk that the manual operation error is introduced equally, the more important thing is and avoided the interdepartmental co-operation of operator, greatly saved maintenance cost.
The present technique method is equally applicable to multi-core network operation business CN (MOCN), be that all CN nodes that the RAN node connects belong to different operators, at this moment, all there is the null-NRI of a correspondence in each CN operator, the scope of Iu-Flex is only effective within operator's scope, and the RAN node is carried out the inventive method respectively in each operator's scope.
According to the description of the invention described above method, the present invention also provides a kind of system that realizes automatic load reallocation, and this system comprises core net CN node and Radio Access Network RAN node; Wherein, the CN node is used for when starting unloading, sends to the RAN node to start the unloading notice; Receive when being shown as successfully, enter unloaded state from the response of RAN node and this response; The RAN node receives the startup unloading notice from the CN node, is provided with state that should the CN node, and returns response to this CN node.
The CN node also comprises: stop uninstall process, and to described RAN node transmission stopping unloading notice, the RAN node receives from the unloading that stops of CN node and notifies, and the state of the CN node of correspondence is set to non-unloaded state, and sends the unloading response message to this CN node.
The Operation and Maintenance O﹠amp that keeps existing startup/stop to unload in CN node and/or the RAN node; The M order.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a method that realizes automatic load reallocation is characterized in that, this method may further comprise the steps:
A. when starting, core net CN node unloads notice Radio Access Network RAN node;
The B.RAN node is according to the unloading information of carrying in the notice that receives, and is provided with state that should the CN node, and returns response to this CN node;
C. in the response that the CN node receives, carry object information be set be shown as successfully the time, the CN node enters unloaded state, realizes automatic load reallocation.
2. method according to claim 1 is characterized in that, sets in advance to be used for the unloading startup thresholding that the CN node judges whether to start uninstall process;
The method that the node of CN described in the steps A starts unloading is: when the present load of described CN node is higher than default unloading enabling gate in limited time, start uninstall process.
3. method according to claim 1 is characterized in that,
The method of the RAN of notice described in steps A node is:
Described CN node will comprise that indication starts/the unloading sign that stops to unload, and the unloading information of the overall identification of described CN node, be carried in the unload request message that sets in advance, and send to described RAN node; Described unload request message is by the Iu interactive interfacing, and described Iu interface is described CN node and the internodal interface of RAN;
Described unloading sign is shown as startup.
4. method according to claim 3 is characterized in that step B specifically comprises:
The state of the CN node of the overall CN node identification correspondence that B1. described RAN node receives is set to unloaded state, and returns the unloading response message that sets in advance to this CN node, and the object information that is provided with that carries in this unloading response message is shown as successfully;
Described unloading response message is by the Iu interactive interfacing, and described Iu interface is described CN node and the internodal interface of RAN.
5. method according to claim 3 is characterized in that, described unloading information also comprises: abortive haul network resource identification null-NRI.
6. method according to claim 5 is characterized in that step B specifically comprises:
Described RAN node judges in the unload request message that receives whether carry null-NRI, if do not carry null-NRI, the state of the CN node of the overall CN node identification correspondence that then described RAN node receives is set to unloaded state, and return the unloading response message that sets in advance to this CN node, and the object information that is provided with that carries in this unloading response message is shown as successfully;
If carry, then described RAN node judges that this null-NRI is whether consistent with self pre-configured null-NRI, if it is inconsistent, then described RAN node returns the unloading response message to the CN node of the overall CN node identification correspondence that receives, the object information that is provided with that carries in this unloading response message is shown as failure, and failure cause is that null-NRI is inconsistent; If it is consistent, the state of the CN node of the overall CN node identification correspondence that then described RAN node receives is set to unloaded state, and return the unloading response message to this CN node, and the object information that is provided with that carries in this unloading response message is shown as successfully, afterwards execution in step C.
7. method according to claim 1 is characterized in that, sets in advance to be used for the CN node and to judge whether that the unloading that stops uninstall process stopping thresholding; After described CN node entered unloaded state, this method also comprised:
When the present load of described CN node is lower than that default unloading stops thresholding and during for unloaded state, stops uninstall process.
8. method according to claim 7 is characterized in that, the described method that stops uninstall process is:
After described CN node reaches the unloading stop condition, will comprise that indication starts/the unloading sign that stops to unload, and the unloading information of the overall identification of described CN node, be carried in the unload request message, send to described RAN node;
Described unloading sign is shown as and stops;
The state of the CN node of the overall CN node identification correspondence that described RAN node receives is set to non-unloaded state, and returns the unloading response message to this CN node.
9. method according to claim 1 is characterized in that, this method also comprises: the Operation and Maintenance O ﹠amp that keeps existing startup/stop to unload in described CN node and/or the RAN node; The M order.
10. a system that realizes automatic load reallocation is characterized in that, this system comprises core net CN node and Radio Access Network RAN node; Wherein,
The CN node is used for when starting unloading, sends to the RAN node to start the unloading notice; Receive when being shown as successfully, enter unloaded state from the response of RAN node and this response;
The RAN node receives the startup unloading notice from the CN node, is provided with state that should the CN node, and returns response to this CN node.
11. system according to claim 10 is characterized in that, described CN node also is used for to described RAN node transmission stopping unloading notice;
Described RAN node receives from the unloading that stops of CN node and notifies, and the state of the CN node of correspondence is set to non-unloaded state, and sends the unloading response message to this CN node.
12. according to claim 10 or 11 described systems, it is characterized in that, keep the Operation and Maintenance O﹠amp of existing startup/stop to unload in described CN node and/or the RAN node; The M order.
13. system according to claim 10 is characterized in that, described CN node and RAN node belong to same Chi Qu.
14. system according to claim 13 is characterized in that, described CN node is: moving exchanging center MSC node, or Serving GPRS Support Node SGSN node;
Described RAN node is: radio network controller (RNC), or base station controller BSC.
15. system according to claim 10 is characterized in that, described CN node belongs to same or different operators.
Priority Applications (1)
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| CN101141802B (en) * | 2007-08-10 | 2010-07-28 | 上海华为技术有限公司 | Method for distributing transmission resource and wireless network controller |
| CN101835136A (en) * | 2009-03-09 | 2010-09-15 | 中兴通讯股份有限公司 | Status indication method, core network and wireless network controller |
| CN101547528A (en) * | 2009-04-24 | 2009-09-30 | 中兴通讯股份有限公司 | Method and system for realizing soft unloading of multi-homing core network element |
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| US5548533A (en) * | 1994-10-07 | 1996-08-20 | Northern Telecom Limited | Overload control for a central processor in the switching network of a mobile communications system |
| CN1321403A (en) * | 1998-07-31 | 2001-11-07 | 艾利森电话股份有限公司 | Method, exchange, telecommunication system and mobile station for temporary selective national roaming at predetermined network operations in mobile radio communication system |
| US6738627B1 (en) * | 1999-09-14 | 2004-05-18 | Lg Electronics Inc. | Apparatus and method for processing data call of mobile communication system |
| CN1738477A (en) * | 2004-08-16 | 2006-02-22 | 上海华为技术有限公司 | Load switching method for mobile communication system |
| CN1787689A (en) * | 2004-12-07 | 2006-06-14 | 三星电子株式会社 | Method and apparatus for informing a radio access network of a selected core network |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5548533A (en) * | 1994-10-07 | 1996-08-20 | Northern Telecom Limited | Overload control for a central processor in the switching network of a mobile communications system |
| CN1321403A (en) * | 1998-07-31 | 2001-11-07 | 艾利森电话股份有限公司 | Method, exchange, telecommunication system and mobile station for temporary selective national roaming at predetermined network operations in mobile radio communication system |
| US6738627B1 (en) * | 1999-09-14 | 2004-05-18 | Lg Electronics Inc. | Apparatus and method for processing data call of mobile communication system |
| CN1738477A (en) * | 2004-08-16 | 2006-02-22 | 上海华为技术有限公司 | Load switching method for mobile communication system |
| CN1787689A (en) * | 2004-12-07 | 2006-06-14 | 三星电子株式会社 | Method and apparatus for informing a radio access network of a selected core network |
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