CN100420216C - Method for realizing load distribution in united route/location update - Google Patents
Method for realizing load distribution in united route/location update Download PDFInfo
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- CN100420216C CN100420216C CNB2005100800169A CN200510080016A CN100420216C CN 100420216 C CN100420216 C CN 100420216C CN B2005100800169 A CNB2005100800169 A CN B2005100800169A CN 200510080016 A CN200510080016 A CN 200510080016A CN 100420216 C CN100420216 C CN 100420216C
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Abstract
The present invention discloses a method for realizing load allocation in a joint route/location update under the condition that a Gs interface exists. Load is allocated for serving GPRS support nodes (SGSN) in radio access network nodes by the method, and a suitable SGSN is selected as a destination SGSN. A destination MSC/VLR is determined by the destination SGSN according to the load status of a current mobile switching center/visitor location register (MSC/VLR), and a message of a location update request is sent to the destination MSC/VLR. The method guarantees that the destination SGSN can select the MSC/VLR according to load by the obtained load status of the MSC/VLR by the destination SGSN. Thus, the purpose of allocating load for the MSC/VLR is achieved. The message of the location update request can be sent to the currently selected MSC/VLR with the optimum load status by the destination SGSN so that the dynamic balance of the load of the MSC/VLR is guaranteed.
Description
Technical field
The present invention relates to the load allocating technology, refer to especially in joint route/position (RA/LA) upgrades, realize the method that core net (CN) node load distributes under a kind of situation that has a Gs interface.
Background technology
Third generation partner program (3GPP) standard TS23.236 has proposed the notion of pool area, and promptly several Radio Access Networks (RAN) node is formed a pool area as the zone of radio network controller (RNC) or base station controller (BSC) covering.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, these CN nodes were promptly formed a CN node pool, as mobile switching center (MSC/VLR) pond or Serving GPRS Support Node (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 portable terminal (MS) 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 MS among the TMSI/P-TMSI, specify a CN that service is provided so just for this MS, this CN can be called service CN.Here, if the CN node is MSC/VLR, then be MS distribution T MSI; If the CN node is SGSN, then distribute P-TMSI for MS.In the RAN node, dispose the corresponding relation of interior all NRI of CN node pool and CN node; In the CN node pool, each CN node also disposes the NRI of other CN node.
In certain pool area, when MS sets up Non-Access Stratum (NAS) with the CN node when being connected, the NRI that RAN node basis is initially carried in the NAS message is routed to this initial NAS message the CN node of NRI correspondence.As seen, the RAN node is to select the CN node according to the NRI that carries among the TMSI/P-TMSI.
In order to control the load of each CN node in the CN node pool, reduce the risk of CN node overload, present processing is: when renewal of MS executing location or routing update, by the load state of RAN node according to each CN node in the CN node pool, MS is transferred in the low CN node of load.According to the agreement regulation, the RAN node is load control decision node (LCDN, Load Controlling Node).
Here, in following situation, the CN node can send the load information notification message to the RAN node, so that the load state information of current C N node to be provided:
1. RAN node request CN node provides load information;
2. add new CN node in the CN node pool, after this new CN node is restarted;
3. the load level of CN node changes;
4. because of O﹠amp; Action needs such as M stop certain CN node provides service;
5. cancel O﹠amp to the CN node; The M operation planning.
Wherein, the present load situation disposable load level index of CN node represents, and is general, and the load level of CN node is divided into k grade equably, is n as if the rank of certain CN node, and then representing this CN node is k/n full load, here, and n≤k.For example the load level of certain CN node evenly is divided into 8 grades, and promptly k=8 so, if this CN node load rank is 0, represents that then this CN node is that idling carries; If this CN node load rank is 8, represent that then this CN node is a full load; If this CN node load rank is 4, represent that then this CN node is half load or the like.It should be noted that zero load is not that this CN intranodal of expression does not have the user, and be meant that the load of this CN node is minimum.
After the RAN node is received the load information notification message, can from message, obtain the following load information and the state information of CN node:
The CN node identification of unique identification CN node in the CN node pool; The present load rank of CN node, indicate whether this CN node is whether new CN node indication, the indication CN node that newly comes into operation will carry out the O﹠amp of Operation and Maintenance; M operation indication and indication are from sending the load information notification message to carrying out O﹠amp; The time interval between the M operation.
The RAN node carries out load allocating according to following load allocating principle to the CN node according to the above information of carrying in the load information notification message that receives, and selects appropriate C N node:
1) if O﹠amp; M operation is designated as " 1 ", illustrates that this CN node will carry out Operation and Maintenance, and then this CN node will be from then on not selected, unless receive in the new load information notification message and indicate O﹠amp; The M operation is cancelled, and promptly receives O﹠amp; The M operation is designated as " 0 ";
2) if new CN node is designated as " 1 ", illustrate that this CN node newly comes into operation, then all users select to be connected in this CN node within a certain period of time;
3) except that above two kinds of situations, the RAN node will select the minimum CN node of load level to provide service for the user.
In sum, the RAN node can obtain the load information and the state information of CN node by the load information notification message.Like this, receive co-location/route (RA/LA) update request that UE initiates when the RAN node, the RAN node carries out load allocating according to the load state of the former CN node at current UE place, selects appropriate C N node as current CN node.Such as, the overload of the former CN node at UE place, the RAN node is transferred to MS on the low CN node of other load, reaches the purpose that load is dynamically adjusted.Here said overload can be a standard that pre-sets.
But the such scheme of prior art exists under the situation of Gs interface, does not reach the purpose that load is dynamically adjusted.
As everyone knows, CN is from being divided into circuit switching (CS) territory and packet switching (PS) territory in logic.MSC/VLR is the functional node in CS territory, SGSN is the functional node in PS territory, can be connected by Gs interface between MSC/VLR and the SGSN, can not link to each other between MSC/VLR and the SGSN yet, situation about being connected by Gs interface between MSC/VLR and the SGSN is called the situation that has Gs interface here.MSC/VLR, SGSN link to each other with the RAN node by Iu_CS interface, Iu_PS interface respectively.Gs interface between MSC/VLR and the SGSN uses standard Signaling System Number 7 interface, and wherein Base Station System Application Part (BSSAP+) supports SGSN to be connected with signaling between the MSC/VLR.The BSSAP+ signaling format is simple, and the message among the BSSAP+ is made up of message type field and message elements format fields, and wherein message type field is used to store the BSSAP+ type of message sign that this message of default expression is BSSAP+ message; The message elements format fields is used for the storing message content.Message among the BSSAP+ can be expanded.
From as seen above-mentioned, under the situation that has Gs interface, the RAN node is connected with SGSN by the Iu_PS interface, be connected with MSC/VLR by Gs interface again, at this moment, if initiating associating RA/LA, upgrades MS, in order to save interface-free resources, agreement not regulation signaling is directly passed to MSC/VLR by the RAN node by the Iu_CS interface, so the RAN node has no idea to select MSC/VLR by position updating process, promptly when overload takes place Anchor MSC/VLR, can not carry out load allocating, select suitable MSC/VLR by the RAN node.
Fig. 1 is that prior art exists under the situation of Gs interface, associating RA/LA upgrades the flow chart of handling, it is the request that comprises route and/or position renewal that UE initiates to the RAN node that associating RA/LA upgrades, and wherein the routing update request is handled by SGSN, and position updating request is handled by MSC/VLR.Here, suppose that the RAN node is RNC, this associating RA/LA upgrades processing procedure and specifically may further comprise the steps:
Step 100:UE initiates Routing Area Update request (Routing Area UpdateRequest) message to RNC.
Step 101:RNC carries out load allocating according to the load state of SGSN node, selects suitable SGSN.
The processing of this step and mentioned above the CN node is carried out load allocating selects the method for appropriate C N node in full accord, no longer repeats here.Wherein, load and the state information of RNC by carrying in the load information notification message, the load state of acquisition SGSN node.
Step 102:RNC sends to selected SGSN with Routing Area Update Request message.
In this step, SGSN does following processing according to the indication information in updating type (Update Type) field of carrying in the Routing Area Update Request message:
If being indicated as being associating RA/LA in the Update the type field upgrades, and the content of Update the type field also comprises joint route/position updating request (combined RA/LA update withIMSI attach requested) that IMSI adheres to, perhaps the Location Area Identification (LAI) in this Routing Area Update Request message has identified LA and has changed, illustrate that then this Routing Area Update need initiate position updating request through Gs interface to MSC/VLR from SGSN, enter step 103;
Otherwise, illustrate that this Routing Area Update belongs to the associating RA/LA update request that does not exist under the Gs interface situation, do not belong in the scope of this paper discussion, its specific implementation can no longer be described here referring to 3GPP TS23.060 agreement regulation.
Step 103:SGSN calculates and selects MSC/VLR according to IMSI International Mobile Subscriber Identity (IMSI).
Generally, method according to IMSI calculating and selection MSC/VLR is: stipulate according to agreement, the HASH value that SGSN uses Routing Area Identifier (RAI) and derives from IMSI, and according to certain section HASH value of self configuration and the corresponding relation selection MSC/VLR of certain MSC/VLR.Like this, just selected the MSC/VLR of current transmission location request message.Wherein, RAI and IMSI are carried in the Update the type field of RoutingArea Update Request message.
Above-mentioned according to IMSI calculate and the method for selecting MSC/VLR as seen, in this step, to the current load state of the selection of MSC/VLR and MSC/VLR without any relation, such processing, be difficult to guarantee the MSC/VLR that the selects service that can offer the best, the MSC/VLR of Xuan Zeing is fully loaded with probably.
That is to say that this processing of calculating and select MSC/VLR according to IMSI of prior art does not reach the purpose of MSC/VLR being carried out load allocating.
Step 104:SGSN sends to the MSC/VLR that chooses with position updating request (Location Update Request) message.
The position that step 105～step 106:MSC/VLR will carry self TMSI is upgraded and is received (Location Update Accept) message, sends to SGSN; The TMSI of the current MSC/VLR that SGSN will receive is carried at Routing Area Update and receives in (Routing Area Update Accept) message, sends to UE.
In this step, if in step 101, variation has taken place in SGSN, and then SGSN needs the TMSI of the current MSC/VLR will receive simultaneously and the P-TMSI of current SGSN to be carried in the RoutingUpdate Accept message, sends to UE.
Generally speaking, when portable terminal is initiated joint route/position when upgrading, the CN node all can change, one changes among SGSN and the MSC/VLR but also have, or the two situation about all not changing, in the case, it is constant that processing procedure is upgraded in joint route/position, just in above-mentioned steps 105～step 106, also may there be two kinds of situations:
If one changes among SGSN and the MSC/VLR, then carry TMSI or the P-TMSI that changes in the Routing Area Update Accept message;
If SGSN and MSC/VLR all do not change, then can not carry TMSI and P-TMSI in the Routing Area Update Accept message.
Above-mentioned is that UE initiates the existing processing procedure that associating RA/LA upgrades, and handling process can no longer repeat here referring to 3GPP TS 23.060 agreements regulation more specifically.
It is emphasized that from existing method step 103 as seen, existing under the situation of Gs interface, select MSC/VLR by SGSN, SGSN calculates by IMSI and selects MSC/VLR, rather than selects MSC/VLR according to the current load state of MSC/VLR.Such processing does not reach the purpose of MSC/VLR being carried out load allocating, can not guarantee the dynamic equilibrium of MSC/VLR load.
According to present agreement, SGSN can not obtain the current load state information of MSC/VLR, so can not select MSC/VLR according to load at SGSN, can not guarantee the dynamic equilibrium of MSC/VLR load.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes load allocating in associating RA/LA upgrades, make SGSN select MSC/VLR, MSC/VLR is carried out load allocating, guarantee the dynamic equilibrium of MSC/VLR load simultaneously according to the load state of MSC/VLR.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method that in joint route/position RA/LA upgrades, realizes load allocating, this method may further comprise the steps:
A. after Radio Access Network RAN node receives Routing Area Update message from portable terminal, determine purpose Serving GPRS Support Node SGSN, and send the Routing Area Update request message to purpose SGSN;
B. if determine that described Routing Area Update belongs to the associating RA/LA that exists under the GS interface and upgrades, then purpose SGSN determines purpose MSC/VLR according to the load state of current mobile switching center MSC/VLR, and sends location update request message to purpose MSC/VLR.
In step B, described definite Routing Area Update belongs to the associating RA/LA method for updating that exists under the GS interface and comprises: described purpose SGSN determines that according to the indication information in the described Routing Area Update request the current associating RA/LA that is updated to upgrades.
In step B, described determine current be updated to associating RA/LA renewal after, determine that Routing Area Update belongs to the associating RA/LA method for updating that exists under the GS interface and comprises: described purpose SGSN determines joint route/position updating request that the current IMSI of being updated to adheres to according to the indication information in the described Routing Area Update request, or LA changes.
Before described definite purpose MSC/VLR, this method further comprises: described purpose SGSN reports the present load situation that obtains MSC/VLR by the timing of described MSC/VLR, and is stored in this locality;
The method that described timing reports is: report timer for MSC/VLR is default, and start this report timer when MSC/VLR starts, when reporting timer expiry, then MSC/VLR reports self present load situation to the SGSN that is arranged in same CN node pool.
Before described definite purpose MSC/VLR, this method further comprises: described purpose SGSN obtains the present load situation of MSC/VLR by the reporting events of described MSC/VLR, and is stored in this locality;
The method of described reporting events is: when the MSC/VLR self load condition changed, MSC/VLR reported self present load situation to the SGSN that is arranged in same CN node pool.
Described MSC/VLR reports the method for self present load situation to be:
A. described MSC/VLR with the load level index in self existing load state Maintenance Table, self has distributed is carried in the load Indication message for VLR number, and by the Gs interface between SGSN and MSC/VLR, described load Indication message is sent to described SGSN;
B. described SGSN with the load level index of MSC/VLR in the load Indication message that receives and VLR information one by one corresponding stored in this locality.
Described load Indication message is the Base Station System Application Part BSSAP+ message in the standard Signaling System Number 7 interface.
Described load Indication message comprises three fields: the message type field that is used to carry the type of message sign; Be used to carry VLR number the VLR number field of MSC/VLR; Be used to carry the grade of load field of load level index.
The SGSN of purpose described in the step B determines that the method for purpose MSC/VLR is: purpose SGSN selects the low MSC/VLR of load level index as purpose MSC/VLR according to the load level index that is stored in local described MSC/VLR.
This method also comprises: described purpose MSC/VLR is carried at position requests with self Temporary Mobile Subscriber Identity TMSI and receives in the message, send to described purpose SGSN, described purpose SGSN is carried at the TMSI of the described purpose MSC/VLR that receives in the Routing Area Update reception message, sends to described portable terminal;
Or described purpose MSC/VLR is carried at position requests with self Temporary Mobile Subscriber Identity TMSI and receives in the message, send to described purpose SGSN, described purpose SGSN is carried at TMSI and the packet TMSI P-TMSI of self of the described purpose MSC/VLR that receives in the Routing Area Update reception message, sends to described portable terminal.
Described RAN node is radio network controller (RNC) or base station controller BSC.
As seen from the above technical solution, the present invention selects purpose SGSN according to the load state of current C N node, and sends the Routing Area Update request message to purpose SGSN after the RAN node receives Routing Area Update request message from MS; After purpose SGSN receives the Routing Area Update request message, if the indication information that carries in this message is determined this Routing Area Update and need be initiated position updating request through Gs interface to MSC/VLR by SGSN, then purpose SGSN carries out load allocating according to the load state of MSC/VLR in the CN node of self storing, select purpose MSC/VLR, and send location update request message to purpose MSC/VLR; After purpose MSC/VLR receives location update request message, self TMSI is carried at the position to be upgraded to receive in the message and sends to purpose SGSN, purpose SGSN is with the TMSI of the purpose MSC/VLR that receives, the P-TMSI of the TMSI of the purpose MSC/VLR that perhaps receives and purpose SGSN self is carried at Routing Area Update and receives in the message, sends to UE.
In this method, the timing of purpose SGSN by MSC/VLR reports or reporting events obtains the load state of MSC/VLR, and the load state of the MSC/VLR that obtains is stored in this locality, carry out load allocating according to the load state that is stored in local MSC/VLR then, select purpose MSC/VLR, reached the purpose of MSC/VLR being carried out load allocating, make purpose SGSN location update request message can be sent to the MSC/VLR of load state the best of current selection, guaranteed the dynamic equilibrium of MSC/VLR load.
Description of drawings
Fig. 1 is that prior art exists under the situation of Gs interface, and associating RA/LA upgrades the flow chart of handling;
Fig. 2 is that the present invention exists under the situation of Gs interface, and associating RA/LA upgrades the flow chart of handling;
Fig. 3 is an embodiment of the invention flow chart.
Embodiment
Core concept of the present invention is: initiate associating RA/LA when portable terminal to wireless access network node and upgrade processing procedure, and exist under the situation of Gs interface, SGSN is according to the load state of the MSC/VLR that self stores, carry out the MSC/VLR load allocating, select the MSC/VLR of present load situation the best, guaranteed the dynamic equilibrium of MSC/VLR load.
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 that the present invention exists under the situation of Gs interface, and associating RA/LA upgrades the flow chart of handling, and specifically may further comprise the steps:
Step 200～step 201:RAN node according to the load state of SGSN, carries out load allocating after receiving Routing Area Update request message from MS, selects purpose SGSN, and sends the Routing Area Update request message to purpose SGSN.
In this step, load and the state information of RAN node by carrying in the load information notification message, obtain the load state of CN node, and SGSN carried out load allocating, select described in purpose SGSN and the prior art CN node to be carried out load allocating, select the method for appropriate C N node in full accord, no longer repeat here.
Step 202: purpose SGSN carries out load allocating according to the load state of current MSC/VLR, selects purpose MSC/VLR, and sends location update request message to purpose MSC/VLR.
The selection whether purpose SGSN carries out purpose MSC/VLR has following two kinds of methods:
(1) be indicated as being associating RA/LA renewal if purpose SGSN determines the indication information that the Routing Area Update request message carries, then purpose SGSN selects purpose MSC/VLR according to the load state of MSC/VLR in the CN node.
(2) if purpose SGSN determines that the indication information that the Routing Area Update request message carries includes joint route/position updating request (combined RA/LA update with IMSIattach requested) that IMSI adheres to, or LA changes, illustrate that this Routing Area Update need initiate position updating request through Gs interface to MSC/VLR by SGSN, then purpose SGSN selects purpose MSC/VLR according to the load state of MSC/VLR in the CN node.
Whether carry out the selection of purpose MSC/VLR if adopt above-mentioned (2) kind method decision, if do not have combined RA/LA update withIMSI attach requested in the indication information that the Routing Area Update request message carries, perhaps LA does not change, illustrate that then this Routing Area Update belongs to the associating RA/LA update request that does not exist under the Gs interface, do not belong in the scope of this paper discussion, its specific implementation can no longer be described here referring to 3GPP TS23.060 agreement regulation.
In this step, whether decision carries out the selection of purpose MSC/VLR if purpose SGSN adopts (2) kind method, then purpose SGSN, directly sends location update request message to purpose MSC/VLR and gets final product behind the selection purpose MSC/VLR according to the load state of MSC/VLR in the CN node;
Whether decision carries out the selection of purpose MSC/VLR if purpose SGSN adopts (1) kind method, then purpose SGSN judges according to above-mentioned (2) kind method whether this Routing Area Update request message is to initiate position updating request through Gs interface to MSC/VLR by SGSN, if, then purpose SGSN is according to the load state of MSC/VLR in the CN node, after selecting purpose MSC/VLR, directly send location update request message and get final product to purpose MSC/VLR; Otherwise, illustrate that this Routing Area Update belongs to the associating RA/LA update request that does not exist under the Gs interface, do not belong in the scope of this paper discussion, its specific implementation can no longer be described here referring to 3GPP TS23.060 agreement regulation.
In addition, the timing of purpose SGSN by MSC/VLR reports or reporting events obtains the real-time load state of MSC/VLR and is stored in this locality, like this, purpose SGSN can carry out load allocating according to the real-time load state that is stored in local MSC/VLR, selects purpose MSC/VLR.In fact, to report self load condition and associating RA/LA renewal process to SGSN be two separate parallel flow processs to MSC/VLR.
MSC/VLR to SGSN report the method for self load condition have below two kinds:
Method one: regularly report.
Report timer for MSC/VLR is default, and start this report timer when MSC/VLR starts, this reports timer whenever once overtime, and MSC/VLR reports once self current load state to the SGSN that is arranged in same CN node pool.Here, report the timing length of timer to depend on the real-time requirement of operator, such as 30 minutes to carrying control.The method that specifically reports is:
Gs interface between MSC/VLR and the SGSN uses standard Signaling System Number 7 interface, for the load state with MSC/VLR reports SGSN, (Load-Indication) message is indicated in the present invention's load that a newly-increased conformance with standard Signaling System Number 7 requires in BSSAP+, carries the load state of MSC/VLR in the load Indication message.Described load Indication message comprises three fields: (1) message type field: be used to carry current type of message sign; (2) VLR number field: be used to carry VLR number of MSC/VLR; (3) grade of load field: the load level index that is used to carry MSC/VLR.
When set when reporting timer expiry, at first MSC/VLR is carried at the load level index of current MSC/VLR in the existing load state Maintenance Table in this locality in the grade of load field of load Indication message, with having distributed to when the network planning in the VLR number field that VLR number of this MSC/VLR be carried at the load Indication message of MSC/VLR self, and the BSSAP+ type of message sign of load Indication message correspondence is carried in the message type field of load Indication message; MSC/VLR sends to SGSN with above-mentioned load Indication message by Gs interface then; After SGSN receives the load Indication message, with the load level index of MSC/VLR in the load Indication message that receives and VLR information one by one corresponding stored in this locality.
Like this, in this step, purpose SGSN just can select the minimum MSC/VLR of load level index as purpose MSC/VLR according to the load level index that is stored in local MSC/VLR, and VLR number of this purpose MSC/VLR is and minimum load level index VLR number one to one.
Method two: reporting events.
MSC/VLR manages by the existing load state Maintenance Table in this locality the load state of self, and when load state changed, MSC/VLR can carry out corresponding maintenance to the load state Maintenance Table.Among the present invention, the trigger condition that the load state of MSC/VLR changes and reports as the time can be set, when the load state of MSC/VLR changed, trigger event reported, and MSC/VLR reports current self load state to the SGSN that is arranged in same CN node pool.In full accord in method that specifically reports and the method one, different only be that to trigger the condition that reports different: in method one, report timer expiry to trigger and report; In method two, when changing, triggers the MSC/VLR load state reporting.
The position that step 203～step 204: purpose MSC/VLR will carry self TMSI is upgraded and is received message and send to purpose SGSN, and purpose SGSN is carried at Routing Area Update with the TMSI of the purpose MSC/VLR that receives and receives in the message and send to UE.
Step 105～step 106 is in full accord in realization of this step and the prior art, no longer repeats here.
Exist from the invention described above under the situation of Gs interface, associating RA/LA upgrades the method for handling, importantly, in purpose SGSN, load state according to MSC/VLR in the CN node of self storing carries out load allocating to MSC/VLR, the MSC/VLR that selects load state the best is as purpose MSC/VLR, and purpose SGSN only needs that the position requests updating message is sent to purpose MSC/VLR and gets final product afterwards.The inventive method has guaranteed the dynamic equilibrium of MSC/VLR load.
Specifically describe implementation method of the present invention below in conjunction with an embodiment.Fig. 3 is an embodiment of the invention flow chart, supposes that here the RAN node is RNC, and the CN node pool comprises SGSN node pool and MSC/VLR node pool; And the indication information of Update the type field upgrades for being indicated as being associating RA/LA in the Routing Area Update Request message, and also comprise combined RA/LA update with IMSIattach requested, or LA changes, and promptly this Routing Area Update request message is to initiate the associating RA/LA update inquiry information that the position is upgraded through Gs interface to MSC/VLR by SGSN.Suppose in the present embodiment that simultaneously in load allocating, SGSN does not change, MSC/VLR changes.The specific implementation step is as follows:
After the step 300～Routing Area Update Request message of step 301:RNC reception from MS, the load state according to node in the CN node pool carries out load allocating, selects purpose SGSN, and sends the Routing Area Update request message to purpose SGSN.
In this step, it is prior art that RNC selects purpose SGSN, no longer repeats here.
In this step, SGSN is carried out the load allocating processing CN node is carried out load allocating, select the method for appropriate C N node in full accord, no longer repeat here with described in the prior art.
Step 302: purpose SGSN carries out load allocating according to the load state of MSC/VLR in the current C N node, determines purpose MSC/VLR, and sends Location UpdateRequest message to purpose MSC/VLR.
After hypothesis goal SGSN determined that the indication information in the UpdateType field that Routing Area Update Request message carries is indicated as being associating RA/LA and upgrades, purpose SGSN selected purpose MSC/VLR according to the load state of MSC/VLR in the CN node.
In this step, the real-time load state of the MSC/VLR of purpose SGSN self storage is that the timing by MSC/VLR reports or reporting events obtains.
Described in the specific implementation such as step 202 of the real-time load state of acquisition MSC/VLR, no longer repeat here.What emphasize here is, purpose SGSN is according to the load state of MSC/VLR, and the MSC/VLR that selects present load situation the best has reached the purpose of MSC/VLR being carried out load allocating as purpose MSC/VLR, has guaranteed the dynamic equilibrium of MSC/VLR load simultaneously.
The LocationUpdate Accept message that step 303～step 304: purpose MSC/VLR will carry self TMSI sends to purpose SGSN, and purpose SGSN is carried at the TMSI of the purpose MSC/VLR that receives in the Routing Area Update Accept message and sends to UE.
The realization of this step and the step 105～step 106 of prior art are in full accord, no longer repeat here.
MSC/VLR of the present invention initiatively reports self load condition information, makes the entity that obtains this load state information can carry out processing with MSC/VLR load state related procedure.The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (11)
1. method that realizes load allocating in joint route/position RA/LA upgrades is characterized in that this method may further comprise the steps:
A. after Radio Access Network RAN node receives Routing Area Update message from portable terminal, determine purpose Serving GPRS Support Node SGSN, and send the Routing Area Update request message to purpose SGSN;
B. if determine that described Routing Area Update belongs to the associating RA/LA that exists under the Gs interface and upgrades, then purpose SGSN determines purpose MSC/VLR according to the load state of current mobile switching center MSC/VLR, and sends location update request message to purpose MSC/VLR.
2. method according to claim 1, it is characterized in that, in step B, described definite Routing Area Update belongs to the associating RA/LA method for updating that exists under the Gs interface and comprises: described purpose SGSN determines that according to the indication information in the described Routing Area Update request the current associating RA/LA that is updated to upgrades.
3. method according to claim 1 and 2, it is characterized in that, in step B, described definite Routing Area Update belongs to the associating RA/LA method for updating that exists under the Gs interface and comprises: described purpose SGSN determines joint route/position updating request that the current IMSI of being updated to adheres to according to the indication information in the described Routing Area Update request, or LA changes.
4. method according to claim 1 is characterized in that, further comprises before described definite purpose MSC/VLR: described purpose SGSN reports the present load situation that obtains MSC/VLR by the timing of described MSC/VLR, and is stored in this locality;
The method that described timing reports is: report timer for MSC/VLR is default, and start this report timer when MSC/VLR starts, when reporting timer expiry, then MSC/VLR reports self present load situation to the SGSN that is arranged in same CN node pool.
5. method according to claim 1 is characterized in that, further comprises before described definite purpose MSC/VLR: described purpose SGSN obtains the present load situation of MSC/VLR by the reporting events of described MSC/VLR, and is stored in this locality;
The method of described reporting events is: when the MSC/VLR self load condition changed, MSC/VLR reported self present load situation to the SGSN that is arranged in same CN node pool.
6. according to claim 4 or 5 described methods, it is characterized in that described MSC/VLR reports the method for self present load situation to be:
A. described MSC/VLR with the load level index in self existing load state Maintenance Table, self has distributed is carried in the load Indication message for VLR number, and by the Gs interface between SGSN and MSC/VLR, described load Indication message is sent to described SGSN;
B. described SGSN with the load level index of MSC/VLR in the load Indication message that receives and VLR information one by one corresponding stored in this locality.
7. method according to claim 6 is characterized in that, described load Indication message is the Base Station System Application Part BSSAP+ message in the standard Signaling System Number 7 interface.
8. method according to claim 7 is characterized in that, described load Indication message comprises three fields: the message type field that is used to carry the type of message sign; Be used to carry VLR number the VLR number field of MSC/VLR; Be used to carry the grade of load field of load level index.
9. method according to claim 8, it is characterized in that, the SGSN of purpose described in the step B determines that the method for purpose MSC/VLR is: purpose SGSN selects the low MSC/VLR of load level index as purpose MSC/VLR according to the load level index that is stored in local described MSC/VLR.
10. method according to claim 1, it is characterized in that, this method also comprises: described purpose MSC/VLR is carried at position requests with self Temporary Mobile Subscriber Identity TMSI and receives in the message, send to described purpose SGSN, described purpose SGSN is carried at the TMSI of the described purpose MSC/VLR that receives in the Routing Area Update reception message, sends to described portable terminal;
Or described purpose MSC/VLR is carried at position requests with self Temporary Mobile Subscriber Identity TMSI and receives in the message, send to described purpose SGSN, described purpose SGSN is carried at TMSI and the packet TMSI P-TMSI of self of the described purpose MSC/VLR that receives in the Routing Area Update reception message, sends to described portable terminal.
11. method according to claim 1 is characterized in that: described RAN node is radio network controller (RNC) or base station controller BSC.
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| CNB2005100800169A CN100420216C (en) | 2005-06-24 | 2005-06-24 | Method for realizing load distribution in united route/location update |
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| CNB2005100800169A CN100420216C (en) | 2005-06-24 | 2005-06-24 | Method for realizing load distribution in united route/location update |
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| CN104380771B (en) * | 2012-05-11 | 2018-06-26 | 华为技术有限公司 | A kind of information processing method of MSC pool, apparatus and system |
| CN105207818A (en) * | 2015-09-23 | 2015-12-30 | 杭州数梦工场科技有限公司 | Node control method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256060A (en) * | 1998-02-10 | 2000-06-07 | 诺基亚网络有限公司 | Reduction of signalling load in packet radio network |
| WO2002028116A2 (en) * | 2000-09-27 | 2002-04-04 | Motorola Inc | Cellular communications system and method for signalling therein |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256060A (en) * | 1998-02-10 | 2000-06-07 | 诺基亚网络有限公司 | Reduction of signalling load in packet radio network |
| WO2002028116A2 (en) * | 2000-09-27 | 2002-04-04 | Motorola Inc | Cellular communications system and method for signalling therein |
Non-Patent Citations (2)
| Title |
|---|
| 一种基于GPRS网络的缓存一致性策略. 谭劲，朱光喜.通信学报，第26卷第4期. 2005 |
| 一种基于GPRS网络的缓存一致性策略. 谭劲，朱光喜.通信学报，第26卷第4期. 2005 * |
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