CN100466790C - Method for reducing core network node load - Google Patents
Method for reducing core network node load Download PDFInfo
- Publication number
- CN100466790C CN100466790C CNB2005101183231A CN200510076804A CN100466790C CN 100466790 C CN100466790 C CN 100466790C CN B2005101183231 A CNB2005101183231 A CN B2005101183231A CN 200510076804 A CN200510076804 A CN 200510076804A CN 100466790 C CN100466790 C CN 100466790C
- Authority
- CN
- China
- Prior art keywords
- node
- terminal equipment
- subscriber terminal
- load
- former
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a method for reducing the load of core network node, which can confirm the CN node that needs reducing load based on the load condition of each CN node, wherein said method comprises: the needed CN node as original CN node confirms the transferred idle user terminal device and sends page message to the user terminal; the user terminal device receives the page message to send position refresh request to the original CN node; the original CN node receives the position refresh, to transfer the relative user terminal device to other CN nodes, to quickly transfer the idle user terminal device of high-load CN node to the low-load CN node, to reduce the overload probability of CN node, to improve the advantage of pool area.
Description
Technical field
The present invention relates to core network (CN) pool technology, be meant a kind of method that reduces core network node load in the core network node pond especially.
Background technology
According to third generation collaborative project (3GPP, 3rd Generation Partnership Project) standard, Radio Access Network (RAN, Radio Access Network) node can with a plurality of core network (CN, Core Network) node links to each other, and forms the corresponding relation of multi-to-multi.The RAN node can be radio network controller (RNC, Radio Network Controller) or base station controller (BSC, Basic StationController).The CN node of circuit domain is mobile switching centre (MSC, Mobile SwitchingCentre), and the CN node of packet domain is service universal grouping wireless business supporting node (SGSN, Serving GPRS Support Node).
The notion of pool area has been proposed in the 3GPP standard, pool area is meant the zone that a plurality of RAN nodes cover, when subscriber terminal equipment is roamed in pool area, for providing the CN node of service, this subscriber terminal equipment can not change, can reduce like this owing to the CN node changes the more execution number of times of new technological process of the position causes, the Signalling exchange between the minimizing CN node.For providing the CN node of service, subscriber terminal equipment also can be described as service CN node.
A pool area provides service concurrently by a plurality of CN nodes usually, also can provide service by a CN node certainly.When a pool area provided service concurrently by a plurality of CN nodes, these CN nodes had just been formed a CN node pool, i.e. MSC pond or SGSN pond.A CN node pool can be simultaneously for a plurality of pool areas provide service, and promptly a CN node pool can be corresponding with a plurality of pool areas.
For CN node of unique identification in a CN node pool, each CN node in the CN node pool is assigned one or more network resource identifier (NRI, Network ResourceIdentifier), and by Operation and Maintenance the NRI that distributes is configured in the CN node, in order to identify the different CN nodes in the CN node pool.When the CN node is that subscriber terminal equipment distributes Temporary Mobile Subscriber Identity (TMSI, Temporary Mobile Subscriber Identity) or packet TMSI (P-TMSI, Packet Temporary Mobile Subscriber Identity) time, in TMSI/P-TMSI, inserts the NRI of this CN node.Variable-length is the 23rd bit to the 14 bits that the NRI of 0 to 10 bit (bits) is positioned at TMSI/P-TMSI.TMSI is by the CN node of circuit domain, is that MSC is that subscriber terminal equipment distributes; P-TMSI is by the CN node of packet domain, is that SGSN is that subscriber terminal equipment distributes.The actual significant bit length of NRI depends on the network planning among the TMSI/P-TMSI, and can pass through operation maintenance center (OMC, Operation andMaintenance Centre) and be configured.
Dispose the corresponding relation between the NRI and each CN node in the CN node pool in each RAN node of a pool area.In the CN node pool, dispose the corresponding relation between NRI and other CN nodes in each CN node.
When subscriber terminal equipment entered pool area, service CN node carried the NRI of this service CN node in the TMSI/P-TMSI that distributes for subscriber terminal equipment.In this pool area, when the Non-Access Stratum (NAS, Non-Access Stratum) that subscriber terminal equipment is established to the CN node at every turn connected, RNC routed to CN node corresponding to NRI according to NRI with initial NAS message.Like this, can make subscriber terminal equipment in a pool area, use same CN node.
Pool area mechanism provides higher flexibility for networking, for further promoting the advantage that pool area mechanism is brought, the load of each CN node in the control CN node pool, reduce the probability that overload appears in the CN node, when subscriber terminal equipment is initiated the position renewal, by RAN node or CN node load state according to each CN node in the CN node pool, determine whether subscriber terminal equipment to be transferred to other CN nodes, if desired, then subscriber terminal equipment is transferred to the lower CN node of load, concrete processing procedure is referring to following description.The location area updating that can be in the circuit domain is upgraded in described position, also can be the Routing Area Update in the packet domain.Subscriber terminal equipment can be the travelling carriage (MS) in GPRS (GPRS) system, also can be the subscriber equipment (UE, User Equipment) in Wideband Code Division Multiple Access (WCDMA) (WCDMA) system.
It is that the CN node load of core shifts the implementation procedure schematic diagram that Fig. 1 shows in the prior art with the RAN node, as shown in Figure 1, be core, be that the RAN node is a subscriber terminal equipment when selecting new service CN node that with the RAN node implementation procedure that the CN node load shifts may further comprise the steps:
Step 101: subscriber terminal equipment sends position updating request by the RAN node to the CN node, initiates the position and upgrades.
After step 102:CN node is received the position updating request of subscriber terminal equipment transmission, determine that according to the load state of each CN node in the CN node pool needs are transferred to other CN nodes with subscriber terminal equipment, the CN node is subscriber terminal equipment distribution T MSI/P-TMSI, and the NRI that comprises among this TMSI/P-TMSI is the virtual NRI of this CN node.
Each CN node configuration in the CN node pool has virtual NRI and non-broadcast location area (LAI, Location Area Identity) or Routing Area Identifier (RAI, Routing Area Identity), virtual NRI can not repeat with the already used NRI of each CN node in the CN node pool, non-broadcasting LAI/RAI is the special LAI/RAI that does not broadcast in system message, and the LAI/RAI that broadcasts in the non-broadcasting LAI/RAI of a CN node and its system message is inequality.。
Step 103:CN node sends the position by the RAN node to subscriber terminal equipment and upgrades response, this position is upgraded and is carried the new TMSI/P-TMSI that former CN node distributes in the response, and the non-broadcasting LAI/RAI that also carries in the response corresponding to this CN node is upgraded in this position.The CN node that below will determine subscriber terminal equipment need to be shifted away, be that the CN node of receiving position update request is called former CN node, the CN node that is about to become subscriber terminal equipment service CN node is called target CN node.
Step 104: after subscriber terminal equipment receives that response is upgraded in the position, storage TMSI/P-TMSI and non-broadcasting LAI/RAI.The LAI/RAI that broadcasts in non-broadcasting LAI/RAI that subscriber terminal equipment will be received and the system message compares, because the broadcasting LAI/RAI and the non-broadcasting LAI/RAI that dispose in the CN node are inequality, therefore result relatively is inconsistent, subscriber terminal equipment is initiated more new technological process of position immediately then, send (the INITIAL DIRECT TRANSFER) message that direct transfers to the RAN node, carry the virtual NRI of former CN node in this direct-sending message, the non-access layer information that carries in this direct-sending message (NAS Message) is a position updating request, carries the non-broadcasting LAI/RAI of former CN node in the position updating request.
After step 105:RAN node is received direct-sending message, the NRI that determines the routing parameter indication is the virtual NRI of former CN node, definite needs are transferred to other CN nodes with this subscriber terminal equipment, the RAN node is according to the load state of each CN node in the CN node pool, select target CN node is as the new service CN node of subscriber terminal equipment, send initial user terminal equipment message to target CN node then, the non-access layer information (NAS Message) that carries in this initial user terminal equipment message is a position updating request.
If the CN node is the MSC in the circuit domain, the direct execution in step 108～step 109 of subsequent treatment then; If the CN node is the SGSN of packet domain, then subsequent treatment execution in step 106～step 109.
Step 106～step 107: each CN node all disposes the non-broadcasting LAI/RAI of other CN nodes in the CN node pool and the corresponding relation between the CN node address.After target CN node is received position updating request, can be according to the LAI/RAI that carries in this position updating request, be the non-broadcasting LAI/RAI of former CN node, find former CN node, by with the context that obtains subscriber terminal equipment alternately of former CN node.
Step 108～step 109: target CN node is subscriber terminal equipment distribution T MSI/P-TMSI, includes the NRI of target CN node among this TMSI/P-TMSI, and this NRI is the common NRI of CN node, no longer is the virtual NRI of CN node.Ideal CN node upgrades response to the subscriber terminal equipment home position, and this position is upgraded and carried TMSI/P-TMSI and the corresponding LAI/RAI that target CN node distributes in the response, and informing user terminal equipment completing place upgrades.
It is that the CN node load of core shifts the implementation procedure schematic diagram that Fig. 2 shows in the prior art with the CN node, as shown in Figure 2, be core, be that the CN node is a subscriber terminal equipment when selecting new service CN node that with the CN node implementation procedure that the CN node load shifts may further comprise the steps:
Step 201: subscriber terminal equipment sends position updating request by the RAN node to the CN node, initiates the position and upgrades.
After step 202:CN node is received position updating request, determine that according to the load state of each CN node in the CN node pool needs are transferred to other CN nodes with this subscriber terminal equipment, and determine to be about to become the target CN node of the service CN node of this subscriber terminal equipment, former CN node is subscriber terminal equipment distribution T MSI/P-TMSI, the NRI that includes target CN node among this TMSI/P-TMSI, this NRI are the common NRI of CN node.
Step 203: former CN node sends the position by the RAN node to subscriber terminal equipment and upgrades response, this position is upgraded and is carried the new TMSI/P-TMSI that former CN node distributes in the response, and the non-broadcasting LAI/RAI that also carries in the response corresponding to former CN node is upgraded in this position.In the CN node pool, each CN node configuration has non-broadcasting LAI/RAI, each CN node all disposes the non-broadcasting LAI/RAI of other CN nodes in the CN node pool and the corresponding relation between the CN node address, and the CN node address can be CN node global identity (G1obal CN-ID), Internet protocol (IP) address and signalling point address.
Step 204: after subscriber terminal equipment receives that response is upgraded in the position, whether judgement is upgraded the non-broadcasting LAI/RAI that carries in responding corresponding to LAI/RAI and the position of the TMSI/P-TMSI of storage consistent, the result is inconsistent, show subscriber terminal equipment needs executing location new technological process more once more, serve the CN node and shift.Subscriber terminal equipment sends direct-sending message to the RAN node, the routing parameter that carries in this direct-sending message is the NRI of target CN node, the non-access layer information that carries in this direct-sending message is a position updating request, also carries the LAI/RAI corresponding to former CN node in this direct-sending message.
After step 205:RAN node is received direct-sending message, target CN node to routing parameter NRI indication sends initial UE message, the non-access layer information that carries in this initial UE message is a position updating request, carries the non-broadcasting LAI/RAI of former CN node in the location update request message.
If the CN node is the MSC in the circuit domain, the direct execution in step 208 of subsequent treatment then; If the CN node is the SGSN of packet domain, then subsequent treatment execution in step 206～step 208.
Step 206～step 207: after target CN node is received position updating request, determine former CN address of node according to non-broadcasting LAI/RAI corresponding to former CN node, then by with the context that obtains subscriber terminal equipment alternately of former CN node.
Step 208: target CN node upgrades response to the subscriber terminal equipment home position, and informing user terminal equipment completing place upgrades.
The context of subscriber terminal equipment is meant the general name of subscriber terminal equipment all relevant informations in the CN node, and the context of subscriber terminal equipment comprises sign, the state of subscriber terminal equipment, the address and the relevant parameter of each interface at least, or the like.
If the MSC in CN node circuit territory, then the above position updating request is Location AreaUpdate Request, and the position is upgraded response and is Location Area Update Accept; If the CN node is the SGSN of packet domain, then the above position updating request is Routing Area UpdateRequest, and the position is upgraded response and is Routing Area Update Accept.
By above description as seen, no matter be to be the processing method of core with the RAN node, still be the processing method of core with the CN node, all must be when subscriber terminal equipment be initiated the position renewal, the relative users terminal equipment could be transferred to other CN nodes, these two kinds of schemes are passive solution, RAN node or CN node can only be when subscriber terminal equipment be initiated the position renewal, could subscriber terminal equipment be transferred to other CN nodes passively according to the load state of each CN node in the CN node pool.If subscriber terminal equipment is the spanning position zone not, it is long that perhaps terminal equipment carries out cycle of upgrading the position, then can't fast and effeciently subscriber terminal equipment be transferred to other CN nodes according to the existing method that provides at all.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that reduces core network node load, make the Idle state subscriber terminal equipment between the CN node, to shift, effectively reduce the load of CN node.
In order to achieve the above object, the invention provides a kind of method that reduces core network node load, the RAN node is according to the load state of each CN node in the core network CN node pool, determine to need to reduce the CN node of load, the CN node that reduces load to needs sends the subscriber terminal equipment call announcement, and the method includes the steps of:
A, need to reduce load the CN node, be that former CN node receives described subscriber terminal equipment call announcement, need to determine the Idle state subscriber terminal equipment that shifts, send beep-page message to described subscriber terminal equipment then, start timer simultaneously;
After B, subscriber terminal equipment are received beep-page message, send position updating request, after former CN node is received position updating request, carry out the subscriber terminal equipment transfer processing with target CN node to former CN node;
Former CN node receives from the subscriber terminal equipment of RAN node and shifts cancellation notice judge whether timer is overtime, if then stop the transfer processing of Idle state subscriber terminal equipment; Otherwise, do not carry out any processing.
If described subscriber terminal equipment call announcement is article one that described former CN node is received when being used to notify the message that starts Idle state subscriber terminal equipment transfer processing, this former CN node execution in step A then, and ignore the follow-up subscriber terminal equipment call announcement of receiving.
This method comprises that further step C:RAN node detection is not more than setting range to the load that needs reduce the described former CN node of load, sends subscriber terminal equipment to described former CN node and shifts cancellation notice.
Further comprise step D after the described step C: the transfer processing of former CN node stop Idle state subscriber terminal equipment.
If it is that article one that described former CN node is received is when being used to notify the message that stops Idle state subscriber terminal equipment transfer processing that subscriber terminal equipment described in the step C shifts cancellation notice, this former CN node execution in step D then, and ignore the follow-up subscriber terminal equipment of receiving and shift cancellation notice.
When carrying out described step D, former CN node starts timer; Further comprise after the described step D: described former CN node judges whether timer is overtime after receiving subscriber terminal equipment call announcement from the RAN node, if, then start the transfer processing of Idle state subscriber terminal equipment, otherwise, do not carry out any operation.
Each the described RAN node that is arranged in same pool area adopts identical or close load control algolithm.
Determine described in the steps A that the Idle state subscriber terminal equipment that needs to shift is: determine the Idle state subscriber terminal equipment that needs shift according to the selection strategy of storage.
Described selection strategy is whether subscriber terminal equipment carries out the position renewal in the setting-up time scope; Or be the priority of subscriber terminal equipment; Or for selecting subscriber terminal equipment at random.
Carry the paging reason in the described beep-page message, this paging reason indication Idle state subscriber terminal equipment shifts.
According to the proposed method, according to each CN node load situation in the CN node pool, determine to need to reduce the load of CN node, during with other CN nodes to the CN node pool of its load transfer, need to reduce the CN node of load, former CN node is initiated paging to the Idle state subscriber terminal equipment, the relative users terminal equipment responds the paging of former CN node and initiates the position renewal, former then CN node is transferred to other CN nodes in the CN node pool with the relative users terminal equipment, it is target CN node, and after need not the position renewal of subscriber terminal equipment initiation by the time, the relative users terminal equipment could be transferred to other CN nodes, thereby realize initiatively, apace the Idle state subscriber terminal equipment in the CN node of high capacity is transferred to the CN node of low load, reduce the probability of CN node overload greatly, further promote the advantage that pool area brings.
Description of drawings
It is that the CN node load of core shifts the implementation procedure schematic diagram that Fig. 1 shows in the prior art with the RAN node;
It is that the CN node load of core shifts the implementation procedure schematic diagram that Fig. 2 shows in the prior art with the CN node;
Fig. 3 shows the implementation procedure schematic diagram of SGSN transfer Idle state UE among the present invention.
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.
Among the present invention, according to each CN node load situation in the CN node pool, determine to need to reduce the load of CN node, during with other CN nodes to the CN node pool of its load transfer, need to reduce the CN node of load, former CN node is initiated paging to the Idle state subscriber terminal equipment, the relative users terminal equipment responds the paging of former CN node and initiates the position renewal, former then CN node is transferred to other CN nodes in the CN node pool with the relative users terminal equipment, it is target CN node, thereby make the Idle state subscriber terminal equipment between the CN node, to shift, and after need not the position renewal of subscriber terminal equipment initiation by the time, the relative users terminal equipment could be transferred to other CN nodes.
A kind of implementation that provides among the present invention is by the load state of RAN node according to each CN node in the CN node pool, determine whether the Idle state subscriber terminal equipment in the CN node of high capacity to be transferred to other CN nodes, shift if desired, then notice needs the CN node of reduction load to carry out the subscriber terminal equipment transfer; Need to reduce load the CN node, be that former CN node is determined the subscriber terminal equipment that needs shift according to notice, the subscriber terminal equipment that shifts to needs is initiated paging then, the paging that the relative users terminal equipment responds former CN node is initiated the position and is upgraded, and former CN node is transferred to other CN nodes in the CN node pool with the relative users terminal equipment; When the load of former CN node reduces, and be not more than setting range, as 60% o'clock of CN node full load, the RAN node is notified the transfer of corresponding CN node stop subscriber terminal equipment.If do not need to shift, then the RAN node does not carry out any operation.
Another kind of implementation provided by the invention is by the load state of CN node according to each CN node in the CN node pool, determine whether the Idle state subscriber terminal equipment in self CN node to be transferred to other CN nodes in the CN node pool, shift if desired, then need to determine the subscriber terminal equipment of transfer, the subscriber terminal equipment that shifts to needs is initiated paging then, the paging that the relative users terminal equipment responds former CN node is initiated the position and is upgraded, and former CN node is transferred to other CN nodes in the CN node pool with subscriber terminal equipment; When the load of former CN node reduces, and be not more than setting range, as 60% o'clock of CN node full load, the transfer of corresponding CN node stop subscriber terminal equipment.If do not need to shift, then the CN node does not carry out any operation.
Fig. 3 shows the implementation procedure schematic diagram of SGSN transfer Idle state UE among the present invention, and as shown in Figure 3, the implementation procedure that SGSN shifts Idle state UE may further comprise the steps:
Step 301～step 302:RNC determines SGSN according to the load state of each SGSN in the SGSN pond
1Load higher, be 85% of full load as the present load of SGSN, need to reduce its load, with SGSN
1In Idle state UE be transferred to other SGSN in the SGSN pond, RNC is to SGSN
1, be that former SGSN sends the UE call announcement.
Step 303～step 304:SGSN
1After receiving the UE call announcement, need to determine the Idle state UE of transfer, send beep-page message to RNC then, carry UE sign and paging reason in this beep-page message, paging reason indication Idle state UE shifts.After RNC receives beep-page message, send beep-page message according to the UE sign to UE, portability has the paging reason in this beep-page message, and paging reason indication Idle state UE shifts.SGSN can determine the Idle state UE that needs shift according to the selection strategy of storage, promptly select needs to be transferred to the Idle state UE of other SGSN in the SGSN pond according to the selection strategy of storage, for example, SGSN preferentially is chosen in and does not carry out the UE that the position is upgraded in the setting-up time scope, and this UE or these UE are transferred to other SGSN in the SGSN pond; Or SGSN preferentially selects the lower UE of priority according to the priority of setting, and this UE or these UE are transferred to other SGSN in the SGSN pond; Or SGSN selects Idle state UE at random, and this UE or these UE are transferred to other SGSN, or the like.
The UE sign can be the TMSI/P-TMSI of SGSN for its distribution, or be the IMSI International Mobile Subscriber Identity (IMSI of UE, International Mobile User Identifier), or be the International Mobile Station Equipment Identification (IMEI of UE, International Mobile Equipment Identity), or the like.
After having set up RRC between step 305:UE and the RNC and being connected, to SGSN
1Send position updating request, initiate the position and upgrade.If the MSC in CN node circuit territory, then position updating request is Location Area Update Request; If the CN node is the SGSN of packet domain, then position updating request is Routing Area Update Request.
Step 306:SGSN
1After receiving position updating request, with SGSN
k, be to carry out the UE transfer flow between the target SGSN, it is the processing procedure that UE selects new service SGSN, i.e. step 102～step 109 that concrete UE transfer process can be foregoing RNC; Also can be foregoing CN is the processing procedure that UE selects new SGSN, i.e. step 202～step 208; Also can be SGSN
1, be former SGSN request SGSN
k, be that target SGSN is UE distribution T MSI/P-TMSI, SGSN
kAccording to SGSN
1Request be UE distribution T MSI/P-TMSI, and provide this TMSI/P-TMSI to UE, in packet domain, further comprise: with the context transfer of UE to SGSN
k
SGSN
1But repeated execution of steps 303～step 306, i.e. SGSN
1Initiate paging to different Idle state UE, make corresponding UE be transferred to other SGSN in the SGSN pond, until SGSN
1Load be not more than setting range, as SGSN
160% of full load.Do not have tangible time sequencing between the step 303 that repeats～step 306, for example, in the implementation of step a 303～step 306, the CN node can be initiated paging to other Idle state UE, begins the implementation of another step 303～step 306.SGSN
1Can initiate paging to a plurality of UE simultaneously; Also can only initiate paging at every turn, initiate paging to another UE again behind the certain interval of time then to a UE.Different Idle state UE are transferred to different SGSN, and the new service SGSN of promptly different Idle state UE can be inequality.
Step 307:RNC detects SGSN
1Load reduce, and be not more than setting range, as SGSN
160% o'clock of full load, to SGSN
1Send UE and shift cancellation notice.SGSN
1After receiving that UE shifts cancellation notice, stop transfer processing to Idle state UE.
SGSN
1Also can when detecting self load and be not more than setting range, directly stop transfer processing to Idle state UE.
In addition, because CN node pool links to each other with all RAN nodes in the pool area, like this, the CN node may receive that subscriber terminal equipment call announcement or subscriber terminal equipment that different RAN nodes send shift cancellation notice, therefore, the CN node starts Idle state subscriber terminal equipment transfer processing after receiving article one subscriber terminal equipment call announcement, the follow-up subscriber terminal equipment call announcement of receiving will be left in the basket; The CN node of carrying out Idle state subscriber terminal equipment transfer processing stops Idle state subscriber terminal equipment transfer processing after receiving that article one subscriber terminal equipment shifts cancellation notice, and the follow-up subscriber terminal equipment of receiving shifts cancellation notice and will be left in the basket.
If after the CN node stop Idle state subscriber terminal equipment transfer processing, when receiving the subscriber terminal equipment call announcement from the RAN node, frequently carry out Idle state subscriber terminal equipment transfer processing for avoiding same CN node, this CN node can judge moment of receiving the subscriber terminal equipment call announcement to the dwell time length that stops Idle state subscriber terminal equipment transfer processing whether greater than setting-up time length, if then start Idle state subscriber terminal equipment transfer processing; Otherwise, do not carry out any processing.For example, in the CN node, timer is set, in the time of CN node stop Idle state subscriber terminal equipment transfer processing, start this timer, when this CN node is received from the subscriber terminal equipment call announcement of RAN node again, judge whether timer is overtime, if then start Idle state subscriber terminal equipment transfer processing; Otherwise, do not carry out any processing.
If after a CN node starts Idle state subscriber terminal equipment transfer processing, receive when shifting cancellation notice from the subscriber terminal equipment of RAN node, crossing the switching of carrying out the start and stop of Idle state subscriber terminal equipment transfer processing in the short time for avoiding same CN node, this CN node can judge receive moment that subscriber terminal equipment shifts cancellation notice to start Idle state subscriber terminal equipment transfer processing start-up time length whether greater than setting-up time length, if then stop Idle state subscriber terminal equipment transfer processing; Otherwise, do not carry out any processing, when start-up time, length was greater than setting-up time length, the CN node can stop Idle state subscriber terminal equipment transfer processing automatically.For example, in the CN node, timer is set, when the CN node starts Idle state subscriber terminal equipment transfer processing, start this timer, when this CN node is received from the subscriber terminal equipment transfer cancellation of RAN node again, judge whether timer is overtime, if then stop Idle state subscriber terminal equipment transfer processing; Otherwise, do not carry out any processing.
Different RAN nodes should adopt identical or more approaching load control algolithm, basic identical to guarantee the definite CN node that needs transferring load of each RAN node, for example, the present load of CN node reaches 80% of full load, corresponding CN node needing can be defined as the CN node of transferring load, thereby avoid different RAN nodes to indicate different CN nodes to carry out Idle state subscriber terminal equipment transfer processing, make the CN node shift the Idle state subscriber terminal equipment each other, cause the confusion of Idle state subscriber terminal equipment transfer processing.
If the CN node is according to the load state of each CN node in the CN node pool, determine the Idle state subscriber terminal equipment in self CN node to be transferred to other CN nodes in the CN node pool, then referring to Fig. 3, the difference of processing procedure is: after the CN node determines the Idle state subscriber terminal equipment in self CN node to be transferred to other CN nodes in the CN node pool, directly need to determine the subscriber terminal equipment of transfer, initiate paging to the relative users terminal equipment then, and need not behind the subscriber terminal equipment call announcement that receives from the RAN node, initiate paging to the relative users terminal equipment again; The CN node determine self load be not more than setting range, as 50% o'clock of the full load of CN node, directly stop the transfer processing of Idle state subscriber terminal equipment, and need not behind the subscriber terminal equipment transfer cancellation notice that receives from the RAN node, stop the transfer processing of Idle state subscriber terminal equipment again.
Different CN nodes should adopt identical or more approaching load control algolithm, basic identical to guarantee the definite result who needs transferring load of each CN node, for example, the present load of CN node reaches 80% of full load, this CN node can start the transfer processing of Idle state subscriber terminal equipment, thereby avoid the CN node to shift the Idle state subscriber terminal equipment each other, cause the confusion of Idle state subscriber terminal equipment transfer processing.
The CN node should be avoided initiating paging to a large amount of Idle state subscriber terminal equipments at short notice, to carry out the transfer processing of Idle state subscriber terminal equipment, and load moment of CN node that causes and RAN node sharply rise, the CN node can periodically be initiated paging to the Idle state subscriber terminal equipment, promptly initiates paging to one or several Idle state subscriber terminal equipment at set intervals.
Each CN node sends load state to RAN node, CN node even load control unit in the CN node pool, like this, load control unit just can be known the load state of each CN node in the CN node pool, load control unit just can determine whether the Idle state subscriber terminal equipment in the CN node of high capacity to be transferred to other CN nodes according to the load state of each CN node; Also can be the subscriber terminal equipment select target CN node of needs transfer according to the load state of each CN node.
For avoiding the CN node frequently to send self load condition to load control unit, the load state of CN node can be divided into a plurality of load level, as present load be full load below 10% for load level 0, present load is that 10% to 20% of full load is load level 1, or the like, when the load level of CN node changes, the CN node just sends self load condition to load control unit, also can only send self load level to load control unit, also the load information center can be set in network, the CN node sends self load condition or load level to the load information center, store the load state or the load level of the CN node received at the load information center, load control unit by with the load state of knowing the CN node alternately or the load level at load information center.
If load control unit can be known the concrete load state of CN node, can select the service CN node of the minimum CN node of present load as subscriber terminal equipment.If load control unit can only be known the load level of CN node, and the concrete load state that load level is represented the CN node from high to low from high to low, and then load control unit can be selected the service CN node of the minimum CN node of present load rank as subscriber terminal equipment.For avoiding all selecting the minimum CN node of load level for all subscriber terminal equipments at a period of time internal burden control unit, cause the load of corresponding CN node sharply to rise, can the different choice probability be set at the different loads rank, for example, the selection probability of load level 0 is 70%, the selection probability of load level 1 is 30%, or the like, corresponding one of different loads rank is selected probability, this selection probability changes with other change of CN node load level, if the current selection probability of certain CN node is 70%, then load control unit is when according to CN node load situation being subscriber terminal equipment selection service CN node, at first generate a decimal at random, if decimal is between 0 to 0.7 at random for this, then this CN node will be chosen service CN node as subscriber terminal equipment by load control unit, like this, it is milder that the load of CN node is risen, the higher CN node of load still have by load control unit choose may, be that selected probability is smaller.
Service CN node described in the present invention promptly is included as the CN node that subscriber terminal equipment provides business service, also comprise when subscriber terminal equipment does not carry out any business service, store the CN node of subscriber terminal equipment log-on message, that is to say that the service CN node described in the present invention is meant the CN node of current administration subscriber terminal equipment.
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 (10)
1, a kind of method that reduces core network node load, it is characterized in that, Radio Access Network RAN node is according to the load state of each CN node in the core network CN node pool, determine to need to reduce the CN node of load, the CN node that reduces load to needs sends the subscriber terminal equipment call announcement, and the method includes the steps of:
A, need to reduce load the CN node, be that former CN node receives described subscriber terminal equipment call announcement, need to determine the Idle state subscriber terminal equipment that shifts, send beep-page message to described subscriber terminal equipment then, start timer simultaneously;
After B, subscriber terminal equipment are received beep-page message, send position updating request, after former CN node is received position updating request, carry out the subscriber terminal equipment transfer processing with target CN node to former CN node;
Former CN node receives from the subscriber terminal equipment of RAN node and shifts cancellation notice judge whether timer is overtime, if then stop the transfer processing of Idle state subscriber terminal equipment; Otherwise, do not carry out any processing.
2, method according to claim 1, it is characterized in that, if described subscriber terminal equipment call announcement is article one that described former CN node is received when being used to notify the message that starts Idle state subscriber terminal equipment transfer processing, this former CN node execution in step A then, and ignore the follow-up subscriber terminal equipment call announcement of receiving.
3, method according to claim 1 and 2 is characterized in that, this method further comprises:
C, RAN node detection are not more than setting range to the load of the described former CN node that needs the reduction load, send subscriber terminal equipment to described former CN node and shift cancellation notice.
4, method according to claim 3 is characterized in that, further comprises after the described step C:
The transfer processing of D, former CN node stop Idle state subscriber terminal equipment.
5, method according to claim 4, it is characterized in that, if it is that article one that described former CN node is received is when being used to notify the message that stops Idle state subscriber terminal equipment transfer processing that subscriber terminal equipment described in the step C shifts cancellation notice, this former CN node execution in step D then, and ignore the follow-up subscriber terminal equipment of receiving and shift cancellation notice.
6, method according to claim 4 is characterized in that,
When carrying out described step D, former CN node starts timer;
Further comprise after the described step D: described former CN node judges whether timer is overtime after receiving subscriber terminal equipment call announcement from the RAN node, if, then start the transfer processing of Idle state subscriber terminal equipment, otherwise, do not carry out any operation.
7, method according to claim 1 is characterized in that, each the described RAN node that is arranged in same pool area adopts identical load control algolithm.
8, method according to claim 1 is characterized in that, determines described in the steps A that the Idle state subscriber terminal equipment that needs to shift is: determine the Idle state subscriber terminal equipment that needs shift according to the selection strategy of storage.
9, method according to claim 8 is characterized in that, described selection strategy is whether subscriber terminal equipment carries out the position renewal in the setting-up time scope; Or be the priority of subscriber terminal equipment; Or for selecting subscriber terminal equipment at random.
10, method according to claim 1 is characterized in that, carries the paging reason in the described beep-page message, and this paging reason indication Idle state subscriber terminal equipment shifts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101183231A CN100466790C (en) | 2005-06-15 | 2005-06-15 | Method for reducing core network node load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101183231A CN100466790C (en) | 2005-06-15 | 2005-06-15 | Method for reducing core network node load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1882151A CN1882151A (en) | 2006-12-20 |
| CN100466790C true CN100466790C (en) | 2009-03-04 |
Family
ID=37520073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101183231A Expired - Fee Related CN100466790C (en) | 2005-06-15 | 2005-06-15 | Method for reducing core network node load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100466790C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584093C (en) | 2006-08-15 | 2010-01-20 | 华为技术有限公司 | A method and system transferring user device in mobile communication system |
| CN101039263B (en) * | 2007-03-01 | 2010-08-18 | 华为技术有限公司 | Method for processing node overload of core network and mobile switch equipment and communication system |
| CN101267587B (en) * | 2007-03-12 | 2012-10-31 | 电信科学技术研究院 | A method, device and system for realizing load reallocation |
| CN101232648B (en) * | 2008-02-28 | 2012-01-25 | 中兴通讯股份有限公司 | Device and method for fast discharging terminal |
| 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 |
| CN104185278B (en) * | 2013-05-20 | 2018-12-28 | 上海诺基亚贝尔股份有限公司 | A method of for calling optimization |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003019958A1 (en) * | 2001-08-24 | 2003-03-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and means for redistribution of subscriber information in umts networks where the nodes are arranged in pools |
| WO2004084572A1 (en) * | 2003-03-20 | 2004-09-30 | Telefonaktiebolaget L M Ericsson (Publ) | Method for transferring a mobile terminal in e.g. an umts-network from one server node in a pool to another server node in the same pool |
| CN1561648A (en) * | 2001-10-05 | 2005-01-05 | 艾利森电话股份有限公司 | Optimization of handover procedures in GPRS |
-
2005
- 2005-06-15 CN CNB2005101183231A patent/CN100466790C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003019958A1 (en) * | 2001-08-24 | 2003-03-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and means for redistribution of subscriber information in umts networks where the nodes are arranged in pools |
| CN1561648A (en) * | 2001-10-05 | 2005-01-05 | 艾利森电话股份有限公司 | Optimization of handover procedures in GPRS |
| WO2004084572A1 (en) * | 2003-03-20 | 2004-09-30 | Telefonaktiebolaget L M Ericsson (Publ) | Method for transferring a mobile terminal in e.g. an umts-network from one server node in a pool to another server node in the same pool |
Non-Patent Citations (2)
| Title |
|---|
| Intra-domain connection of Radio Access Network (RAN)nodes to multiple Core Network (CN) nodes. 3rd，Generation，Partnership，Project，Technical，Specification，Group，Services，and，System，Aspects.3GPP TS 23.236 V6.0.0. 2004 |
| Intra-domain connection of Radio Access Network (RAN)nodes to multiple Core Network (CN) nodes. 3rd，Generation，Partnership，Project，Technical，Specification，Group，Services，and，System，Aspects.3GPP TS 23.236 V6.0.0. 2004 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1882151A (en) | 2006-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102355705B (en) | ISR (idle-mode signaling reduction) method and system | |
| CN101068370B (en) | User equipment calling method and system | |
| EP3342247B1 (en) | Method of enhanced timer handling for sim or usim change | |
| US10856255B2 (en) | Methods and systems of paging in cellular networks | |
| CN101128047B (en) | Method for reallocating core network service | |
| US20020086670A1 (en) | Arranging control signallings in telecommunication system | |
| CN102083048B (en) | Method and device for processing paging message under idle condition signaling optimized and activated state | |
| US8605679B2 (en) | Method for avoiding resource being released mistakenly during tracking area update or handover process | |
| CN102300192A (en) | Equipment and method for distributing TMSI (Temporary Mobile Subscriber Identity) during machine to machine communication and corresponding network attaching and location area updating methods | |
| CN101114928B (en) | System and method for implementing load balancing | |
| CN100466790C (en) | Method for reducing core network node load | |
| CN101674628A (en) | Route reselection method and radio network controller | |
| CN100558196C (en) | The method of transferring user terminal in service universal grouping wireless business supporting node pool | |
| CN111556589A (en) | Communication method, terminal and access network equipment | |
| US20110117946A1 (en) | Load re-distribution with communications network control | |
| CN100428851C (en) | Method for transferring user inside node pool of core network, and node | |
| CN102281641B (en) | Method and device for identifying user equipment and method for transmitting and allocating temporary identity | |
| CN101483850A (en) | Method and system for network access | |
| CN101330425A (en) | Method for establishing tunnel from SGSN to service gateway | |
| CN101938807B (en) | Method and device for preventing ineffective paging | |
| CN100455138C (en) | Method for resharing service after kernal network fault recovery | |
| CN102281532B (en) | Method and device for identifying user equipment and method for transmitting and allocating temporary identity | |
| CN100415049C (en) | Handling method for user device transfer between different core network nodes | |
| WO2005084068A1 (en) | Method and apparatus for intelligent paging in a wireless communication network | |
| CN100438469C (en) | Method for selecting service core network node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20130615 |