CN102726078A - Method for mobile terminal registration in Pool area and access network entity - Google Patents

Method for mobile terminal registration in Pool area and access network entity Download PDF

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Publication number
CN102726078A
CN102726078A CN2011800024424A CN201180002442A CN102726078A CN 102726078 A CN102726078 A CN 102726078A CN 2011800024424 A CN2011800024424 A CN 2011800024424A CN 201180002442 A CN201180002442 A CN 201180002442A CN 102726078 A CN102726078 A CN 102726078A
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sgsn
access network
network entity
portable terminal
highest
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CN102726078B (en
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叶晓炳
朱成刚
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration

Abstract

A method and system for mobile terminal registration in a Pool area and an access network entity. The method includes: an access network entity receiving a request message sent by a mobile terminal, with the request message carrying identity information about the mobile terminal and being used for requesting to perform mobile terminal registration; the access network entity selecting from a serving GPRS support node (SGSN) state list an SGSN in normal state and with the highest priority; the access network entity sending the request message to the SGSN with the highest priority, so as to complete the registration of the mobile terminal. Thus, the flexibility of SGSN selection can be improved.

Description

Mobile terminal registers method and access network entity in the Pool district
Technical field
The present invention relates to moving communicating field, relate in particular to mobile terminal registers method and access network entity in a kind of Pool district.
Background technology
In mobile communications network; For being provided to the user, online more stably experiences; Usually will be deployed in a plurality of general packet wireless service support nodes (Serving GPRS Support Node of zones of different; SGSN) form a pond (Pool) district, in this Pool district, not only do not need handed over service SGSN during mobile terminal roaming, and the also lifting to some extent of the service reliability of portable terminal.
The sketch map in a kind of Pool district is as shown in Figure 1, and wherein, city1, city2 and city3 dispose in the city respectively SGSN1, SGSN2 and SGSN3 have formed a pool district.Portable terminal can roamed in pool district shown in Figure 1 under the situation that does not need handed over service SGSN.Further, as shown in Figure 1, (Radio Network Controller, RNC) 1,2 and 3 is the RNC that are deployed in city city1, city2 and city3 respectively to radio network controller.Wherein, RNC1, RNC2 and RNC3 are connected with SGSN1, SGSN2 and SGSN3 through renting bearer network respectively.Usually; Rent bearer network and all pay according to flow, thus operator often hope portable terminal under the RNC1 scope can preferred local SGSN1 registration, the portable terminal under the RNC2 scope can preferred local SGSN2 registration, the portable terminal under the RNC3 scope can preferred local SGSN3 registration.And in the practical application; When unusual (link failure between the RNC that for example this SGSN fault or this SGSN are corresponding with it) took place a certain SGSN in the Pool district, the RNC that this SGSN is corresponding can select corresponding SGSN to register for the portable terminal under its scope according to the Capacity Ratio of all the other SGSN.With Pool district shown in Figure 1 is example; If the capacity ratio of SGSN1, SGSN2 and the SGSN3 of the last configuration of RNC2 is 3: 3: 4; When SGSN2 was unusual, RNC2 can be that the portable terminal under its scope selects corresponding SGSN to register according to the capacity ratio of SGSN1 and SGSN3 at 3: 4.For instance; During request that RNC2 each portable terminal under receiving its scope sends; Can produce a random number n at random, and this random number n is done mould 7 (7=3+4) computing, if operation result is in (0～2) scope; Then RNC2 selects SGSN1 to register for the portable terminal under its scope; If operation result is in (3～6) scope, then RNC2 selects SGSN3 to register for the portable terminal under its scope, makes after a period of time all portable terminals under the RNC2 scope to accomplish to register and attached on SGSN1 and the SGSN3.
Find in the practice; The flexibility of mobile terminal registers method is relatively poor in the above-mentioned Pool district; Particularly when a certain SGSN in Pool district is unusual; The corresponding RNC of this SGSN sends to corresponding SGSN according to the Capacity Ratio of all the other SGSN with the request of all portable terminals under its scope and registers, and this mode can't satisfy the demand of registering according to the preferred SGSN of network condition.
Summary of the invention
Mobile terminal registers method and access network entity in a kind of Pool district that the embodiment of the invention provides can improve the flexibility that SGSN selects.
Mobile terminal registers method in a kind of Pool district comprises:
The request message that the access network entity mobile terminal receive sends, described request message carries the identification information of said portable terminal, and described request message is carried out mobile terminal registers in order to request;
Said access network entity selects state from general packet wireless service support node SGSN state table normal, and the highest SGSN of priority level;
Said access network entity is sent to the highest SGSN of said priority level with described request message, to accomplish the registration of said portable terminal.
A kind of access network entity is applied to the Pool district, comprising:
First module is used for the request message that mobile terminal receive sends, and described request message carries the identification information of said portable terminal; Described request message is carried out mobile terminal registers in order to request;
Unit second, it is normal to be used for selecting state from general packet wireless service support node SGSN state table, and the highest SGSN of priority level;
Unit the 3rd is used for described request message is sent to the highest SGSN of said priority level, to accomplish the registration of said portable terminal.
In the such scheme that the embodiment of the invention provides; Access network entity receives after the request message of portable terminal transmission; The state that can from the SGSN state table, select is normal; And the SGSN that priority level is the highest, and this request message is sent to the highest SGSN of priority level, to accomplish the registration of said portable terminal.Particularly when the corresponding SGSN of access network entity is unusual, can register, thereby improved the flexibility that SGSN selects for the SGSN that portable terminal selects the immediate SGSN of SGSN corresponding with access network entity or portable terminal to insert minimum number.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; To do to introduce simply to the accompanying drawing of required use among the embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the embodiment of the invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sketch map in existing a kind of Pool district;
The flow chart of mobile terminal registers method in a kind of Pool district that Fig. 2 provides for the embodiment of the invention;
The flow chart of mobile terminal registers method in several kinds of Pool districts that Fig. 3, Fig. 4 provide for the embodiment of the invention;
The structure chart of several kinds of access network entity that Fig. 5～Fig. 9 provides for the embodiment of the invention;
The structure chart of mobile terminal registers system in a kind of Pool district that Figure 10 provides for the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Mobile terminal registers method and system, access network entity in a kind of Pool district that the embodiment of the invention provides can improve the flexibility that SGSN selects.Describe through specific embodiment below.
Embodiment one:
See also Fig. 2, mobile terminal registers method in a kind of Pool district that Fig. 2 provides for the embodiment of the invention.Wherein, The method that Fig. 2 describes can be applied to code division multiple access and insert 2000 (Code Division Multiple Access 2000; CDMA2000), WCDMA (Wideband Code Division Multiple Access; WCDMA), TD SDMA (Time Division-Synchronous Code Division Multiple Access, (3rd-generation is 3G) in the system TD-SCDMA) to wait the 3G (Third Generation) Moblie system; (Global System For Mobile Communications GSM) waits in the second third-generation mobile communication system also can be applied to global system for mobile communications.Further,, then can come the method for execution graph 2 descriptions, realize the registration of portable terminal in Pool by the radio network controller in the Pool district (RNC) if the method that Fig. 2 describes is applied to the 3G system; If the method that Fig. 2 describes is applied to second generation GSM, then can (Base Station Controller BSC) comes the method for execution graph 2 descriptions, can realize the registration of portable terminal in Pool equally by the base station controller in the Pool district.For the ease of describing, in the method that Fig. 2 describes, RNC and BSC are referred to as access network entity, promptly the access network entity of embodiment of the invention subsequent descriptions both can be RNC, also can be BSC.As shown in Figure 2, this method can may further comprise the steps:
201, the request message of access network entity mobile terminal receive transmission, this request message carries the identification information of portable terminal, and this request message is registered in order to the request portable terminal.
Wherein, above-mentioned request message can be Attach Request message Attach Request, can be the router update inquiry information also, and the embodiment of the invention does not limit.
Wherein, portable terminal can be the portable terminal that roams in the access network entity coverage, can be the portable terminal of this locality in the access network entity coverage, and the embodiment of the invention does not limit.
Wherein, portable terminal can be distributed in subscriber equipment in the whole wireless network (User Equipment, UE), each UE can be static or move.UE can be called terminal (terminal) again, travelling carriage (mobile station), subscriber unit (subscriber unit), platform (station) etc.UE can be cell phone (cellular phone), and personal digital assistant (Personal Digital Assistant, PDA); Radio modem (modem), Wireless Telecom Equipment, handheld device (handheld); Kneetop computer (laptop computer); Cordless telephone (cordless phone), WLL (Wireless Local Loop, WLL) platform etc.UE can with macro base station, skin (pico) base station, femtocell (femto) base station etc. communicates.
Wherein, The identification information of portable terminal can be international mobile subscriber identity (the International Mobile Subscriber Identification Number of portable terminal; IMSI), also can be the temporary mobile subscriber identity (P-TMSI) of portable terminal.Wherein, (Network Resource Identifier, NRI), this NRI is that a certain SGSN that portable terminal last time inserted distributes, and is used to identify this SGSN can to carry network resource identifier among the P-TMSI of portable terminal.
In practical application; When portable terminal for the first time when access network entity is sent Attach Request message Attach Request or router update inquiry information, can carry the IMSI that is used to represent the portable terminal identity in this Attach Request message Attach Request or the router update inquiry information.And after portable terminal successfully is registered to a certain SGSN in the Pool district for the first time; This SGSN gives portable terminal with the P-TMSI that distribution contains local exchange NRI; Make portable terminal follow-up once more when access network entity is sent Attach Request message Attach Request or router update inquiry information, this Attach Request message Attach Request or router update inquiry information can be carried the P-TMSI that is used to represent the portable terminal identity.Like this; When access network entity receives Attach Request message Attach Request that portable terminal sends or router update inquiry information; Can from the P-TMSI that Attach Request message Attach Request or router update inquiry information are carried, parse NRI, and Attach Request message or the router update inquiry information that portable terminal sends sent to the corresponding SGSN of NRI.Thereby can guarantee all can be routed on the registered SGSN of portable terminal when the interior portable terminal of Pool is initiated attach request or router renewal request at every turn, make when portable terminal is roamed in the Pool district, need not change service SGSN.Compare with traditional networking,, can make the Pool networking reduce the signaling load of Iu/Gb interface through NRI.
Usually, NRI is positioned at the 23bit～14bit of P-TMSI.The length of NRI can adjust that (0～10bit), NRI length is not, NRI must begin with 23bit at 0 o'clock.The NRI length of configuration must be identical in the access network entity (being RNC or BSC) that each SGSN and each SGSN are corresponding in the Pool district.
Wherein, the access network entity (being RNC or BSC) of SGSN correspondence meets RNC or the BSC of local SGSN when being meant SGSN as local SGSN.
202, it is normal that access network entity selects state from the SGSN state table, and the highest SGSN of priority level.
Wherein, The SGSN that priority level is the highest can be the corresponding SGSN of access network entity; Also can be the corresponding SGSN of access network entity when unusual, apart from the corresponding nearest SGSN of SGSN of access network entity, perhaps also can be the SGSN that portable terminal inserts minimum number; Can be the SGSN that meets other conditions, the embodiment of the invention limit yet.
Wherein, the corresponding SGSN of access network entity promptly is meant the local SGSN that access network entity inserts.
In the embodiment of the invention, can utilize the SGSN state table to come normal SGSN of recording status and priority level thereof.For instance; When the corresponding SGSN of access network entity is unusual; The SGSN that priority level is the highest can be SGSN (be local SGSN that access network entity insert) the immediate SGSN corresponding with access network entity, also can be the SGSN that portable terminal inserts minimum number.Obviously, when the corresponding SGSN of access network entity was unusual, the quantity of the SGSN immediate SGSN corresponding with access network entity can be one or at least two; Equally, the quantity of the SGSN of portable terminal access minimum number also can be one or at least two.That is to say that when the corresponding SGSN of access network entity was unusual, the state that from preset SGSN state table, selects was normal, and the quantity of the highest SGSN of priority level can be one or at least two.Certainly, at the corresponding SGSN state of access network entity just often, the SGSN that the priority level that from the SGSN state table, selects is the highest can be the corresponding SGSN of access network entity, makes portable terminal to register by the corresponding SGSN of preferred access network entity.Obviously, if the highest SGSN of priority level that from the SGSN state table, selects is the corresponding SGSN of access network entity, the quantity of the SGSN that the priority level that then from the SGSN state table, selects is the highest just is one.
Alternatively, in the above-mentioned SGSN state table, to the normal SGSN of each state, can also write down its corresponding capacity, portable terminal access number of times and the interior portable terminal access failure number of times of certain hour and reason or the like, the embodiment of the invention does not limit.
Wherein, SGSN can be that SGSN self breaks down unusually; Also can be that link between the SGSN access network entity corresponding with it breaks down, also can be SGSN and attaching position register (Home Location Register, the Gr interface between HLR) is unavailable; Also can being SGSN and gateway, (Gateway GPRS Support Node, the Gr interface between GGSN) be unavailable through packet wireless service support node.Further, after SGSN occurred unusually, this SGSN can active broadcast be used to indicate it that unusual message takes place, and the embodiment of the invention does not limit.
203, access network entity is sent to the highest SGSN of priority level with request message, to accomplish the registration of portable terminal.
As above-mentioned said; The quantity of the SGSN that the priority level that access network entity selects from the SGSN state table is the highest can be at least two; So when the identification information of the portable terminal that carries in the request message that portable terminal sends is IMSI, step 203 specifically can for:
Access network entity is sent to the corresponding SGSN among the highest SGSN of above-mentioned at least two priority levels according to the Capacity Ratio of the highest SGSN of pre-configured above-mentioned at least two priority levels with request message, to accomplish the registration of portable terminal;
Perhaps, access network entity inserts minimum number person with the portable terminal that request message is sent among the highest SGSN of above-mentioned two priority levels at least, to accomplish the registration of portable terminal.
For instance, it is the highest to suppose that access network entity selects priority level from the SGSN state table, and consistent SGSN1 and the SGSN3 of priority level; Wherein, The capacity ratio of SGSN1 and SGSN3 is 5: 2, and access network entity can produce a random number n at random so, and this random number n is done mould 7 (7=5+2) computing; If operation result is in (0～4) scope, then access network entity can be sent to SGSN1 with request message and registers; If operation result is in (5～6) scope, then access network entity can be sent to SGSN3 with request message and registers.
Again for instance, it is the highest to suppose that access network entity selects priority level from the SGSN state table, and consistent SGSN1 and the SGSN3 of priority level, and wherein, the portable terminal among the SGSNI inserts the access number of times that number of times is less than the portable terminal among the SGSN3; Then access network entity can be sent to the SGSN1 that portable terminal inserts minimum number with request message.
Certainly, if the highest SGSN of priority level that access network entity selects from the SGSN state table is the corresponding SGSN that is access network entity, then access network entity can be sent to its corresponding SGSN with request message and registers.
As above-mentioned said; The quantity of the SGSN that the priority level that access network entity selects from the SGSN state table is the highest can be at least two; So when the identification information of the portable terminal that carries in the request message that portable terminal sends is P-TMSI, step 203 specifically can for:
Access network entity parses NRI from P-TMSI; And judge the SGSN that whether has the NRI sign at least among the highest SGSN of two priority levels from preset SGSN state table, selecting; If exist; Then access network entity can be sent to request message the SGSN of NRI sign, to accomplish the registration of portable terminal; If do not exist, then access network entity can be according to the Capacity Ratio of the highest SGSN of at least two pre-configured priority levels, request message is sent to the corresponding SGSN among the highest SGSN of at least two priority levels, to accomplish the registration of portable terminal; Perhaps, access network entity can insert minimum number person with the portable terminal that request message is sent among the highest SGSN of two priority levels at least, to accomplish the registration of portable terminal.
As a kind of optional execution mode, the described method of Fig. 2 can also may further comprise the steps:
The registration that the highest SGSN of access network entity reception priority level returns is accomplished response message and will be registered the completion response message and sends to portable terminal, accomplishes the registration of portable terminal.
Wherein, it can be to adhere to accept message Attach Accept that response message is accomplished in above-mentioned registration, also can be that router upgrades the completion response message, and the embodiment of the invention does not limit.
Wherein, Above-mentioned registration accomplish response message be the highest SGSN of the priority level identification information of in the request message (like Attach Request) that the checking portable terminal sends, carrying correct after (identity of promptly verifying portable terminal is correct) just sends, the purpose of this registration completion response message (as adhere to and accept message Attach Accept) is that the affirmation portable terminal adheres to successfully.
As a kind of optional execution mode, in the said method that the embodiment of the invention provides, access network entity can also be carried out following steps earlier after the step 201 that is finished:
Whether access network entity detects preferred SGSN function and opens, if preferred SGSN function is opened access network entity execution in step 202～203 more then; If preferred SGSN function is not opened, then access network entity can be sent out request message (like Attach Request) and deliver to corresponding SGSN according to the Capacity Ratio of pre-configured SGSN, to accomplish the registration of portable terminal.Correspondingly; Portable terminal can also receive the registration completion response message (as adhere to and accept message Attach Accept) that corresponding SGSN returns; And will register and accomplish response message (as adhere to and accept message Attach Accept) and send to portable terminal, thereby accomplish the registration of portable terminal.Wherein, corresponding SGSN can be the corresponding SGSN of access network entity, can be other SGSN also, and the embodiment of the invention does not limit.
In the said method that the embodiment of the invention provides; Access network entity can also be surveyed the state of each SGSN in the Pool district; If it is normal to detect a certain SGSN; Explain that then this SGSN can participate in the selection of access network entity to SGSN, can with this SGSN with and priority level write the SGSN state table, thereby form the SGSN state table.Otherwise if it is unusual to detect a certain SGSN, then this SGSN does not participate in the selection of access network entity to SGSN, need not this SGSN write state table.
As a kind of optional execution mode, access network entity is surveyed the state of each SGSN in the Pool district, and the mode of formation SGSN state table can be following:
Access network entity each SGSN in the Pool district sends and surveys signaling; And whether detection receives the detection signaling response that the SGSN in the Pool district returns to this detection signaling in Preset Time; If; It is normal then to confirm to return the SGSN that surveys signaling response, and will return the SGSN that surveys signaling response with and priority level write the SGSN state table; If not, it is unusual then to confirm not return the SGSN that surveys signaling response, need not this SGSN write state table.
Wherein, Access network entity can be minute being that unit is provided with a Preset Time, access network entity send survey signaling after, if in this Preset Time, receive the detection signaling response that a certain SGSN returns; Explain that then this SGSN is normal, can participate in the selection of access network entity SGSN; Otherwise, explaining that then this SGSN is unusual, this SGSN need not to participate in the selection of access network entity to SGSN.
Perhaps; Access network entity can be minute being that unit is provided with a time period T; Section T of per interval of access network entity sends to some SGSN and once surveys signaling; If send continuously and survey signaling for N time and all do not receive the detection signaling response that this SGSN returns, perhaps (M＜N) do not receive the detection signaling response that this SGSN returns thinks that then this SGSN is unusual to M time in N detection signaling; Otherwise, thinking that then this SGSN is normal, this SGSN can participate in the selection of access network entity to SGSN.
In the practical application, access network entity periodically each SGSN in the Pool district is sent the detection signaling, also can be sent by Event triggered each SGSN in the Pool district and survey signaling, and the embodiment of the invention does not limit.
As the optional execution mode of another kind, access network entity is surveyed the state of each SGSN in the Pool district, and the mode of formation SGSN state table can be following:
Access network entity receives the broadcast that the arbitrary SGSN in the Pool district sends, and this broadcast is used to indicate this SGSN unusual; Access network entity confirms that all the other SGSN except that this SGSN are normal in the Pool district, and with all the other SGSN with and priority level write the SGSN state table.Wherein, this SGSN comprises this SGSN faults itself unusually, and/or the Gr interface between this SGSN and the HLR is unavailable, and/or the gn interface between this SGSN and the GGSN is unavailable or the like.
After access network entity received the request message of portable terminal transmission, access network entity can select the highest SGSN of priority level from the SGSN state table, and this request message is sent to the highest SGSN of priority level, to accomplish the registration of portable terminal.This shows; The embodiment of the invention one can improve the flexibility that SGSN selects; Particularly when the corresponding SGSN of access network entity is unusual; Can register for the SGSN that portable terminal selects SGSN immediate SGSN corresponding with access network entity or portable terminal to insert minimum number, improved the flexibility that SGSN selects.
Embodiment two:
See also Fig. 3, the flow chart of mobile terminal registers method in several kinds of Pool districts that Fig. 3 provides for the embodiment of the invention two.In the method that Fig. 3 describes, suppose that the Pool district is made up of SGSN1 and SGSN2, and be that example is introduced mobile terminal registers method in the Pool district that the embodiment of the invention provides as access network entity with RNC.The concrete implementation procedure of mobile terminal registers method is similar with Fig. 3 in the Pool district of BSC during as access network entity, and therefore, the embodiment of the invention two is not repeated.In the method that Fig. 3 describes; RNC can get rid of the unusual SGSN of appearance in the Pool district, opens preferred SGSN function and has write down the consistent SGSN Capacity Ratio of priority level and/or portable terminal access number of times (SGSN Capacity Ratio and/or portable terminal insert number of times and can be regarded as the SGSN weight again).In addition, the SGSN in the Pool district also can notify this SGSN of RNC unusual judging the unavailable and/or gn interface of Gr interface when unavailable.
As shown in Figure 3, the implementation procedure of mobile terminal registers method is following in a kind of Pool district:
11, the Attach Request message Attach Request that carries IMSI of mobile terminal UE transmission gives RNC.
12, from the SGSN state table, to select state normal for RNC, and the highest SGSN2 of priority level; Wherein, the SGSN2 that priority level is the highest is the corresponding SGSN of RNC (being the local SGSN that RNC inserts).
13, the RNC Attach Request message Attach Request that will carry IMSI is sent to SGSN2.
14, message Attach Accept is accepted in adhering to that RNC reception SGSN2 returns.
Wherein, adhering to that SGSN2 returns accepted to carry the P-TMSI that SGSN2 is the mobile terminal UE distribution among the message Attach Accept, includes the NRI of SGSN2 among this P-TMSI.
15, RNC accepts message Attach Accept with adhering to of returning of SGSN2 and sends to mobile terminal UE, accomplishes the registration of mobile terminal UE.
As shown in Figure 3, the implementation procedure of mobile terminal registers method is following in the another kind of Pool district:
21, the Attach Request message Attach Request that carries P-TMSI of mobile terminal UE transmission gives RNC.
Wherein, the P-TMSI that carries among the Attach Request message Attach Request is that SGSN2 is that mobile terminal UE is distributed, and includes the NRI of SGSN2 among this P-TMSI.
22, RNC selects the highest SGSN2 of priority level from the SGSN state table; Wherein, the SGSN2 that priority level is the highest is the corresponding SGSN of RNC.
Wherein, because the highest SGSN of priority level that RNC selects from the SGSN state table has and only have one of SGSN2, so the NRI of the SGSN2 that comprises among the P-TMSI of UE transmission is inoperative.
23, the RNC Attach Request message Attach Request that will carry P-TMSI is sent to SGSN2.
24, message Attach Accept is accepted in adhering to that RNC reception SGSN2 returns.
25, RNC accepts message Attach Accept with adhering to of returning of SGSN2 and sends to mobile terminal UE, accomplishes the registration of mobile terminal UE.
As shown in Figure 3, the implementation procedure of mobile terminal registers method is following in the another kind of Pool district:
31, the Attach Request message Attach Request that carries P-TMSI of mobile terminal UE transmission gives RNC.
Wherein, the P-TMSI that carries among the Attach Request message Attach Request is that SGSN2 is that mobile terminal UE is distributed, and includes the NRI of SGSN2 among this P-TMSI.
32, RNC selects the highest SGSN1 of priority level from the SGSN state table; Wherein, the SGSN2 that RNC is corresponding is unusual.
Wherein, because the highest SGSN of priority level that RNC selects from the SGSN state table has and only have one of SGSN1, so the NRI of the SGSN2 that comprises among the P-TMSI of UE transmission is inoperative.
33, the RNC Attach Request message Attach Request that will carry P-TMSI is sent to SGSN1.
34, message Attach Accept is accepted in adhering to that RNC reception SGSN1 returns.
Wherein, adhering to that SGSN1 returns accepted to carry the P-TMSI that SGSN1 is the mobile terminal UE distribution among the message Attach Accept, includes the NRI of SGSN1 among this P-TMSI.
35, RNC accepts message Attach Accept with adhering to of returning of SGSN1 and sends to mobile terminal UE, accomplishes the registration of mobile terminal UE.
The embodiment of the invention two can improve the flexibility that SGSN selects; Particularly when the corresponding SGSN of RNC is unusual; Can register for the SGSN that portable terminal selects SGSN immediate SGSN corresponding with RNC or portable terminal to insert minimum number, improved the flexibility that SGSN selects.
Embodiment three:
See also Fig. 4, the flow chart of mobile terminal registers method in several kinds of Pool districts that Fig. 4 provides for the embodiment of the invention three.In the method that Fig. 4 describes, suppose that the Pool district is made up of SGSN1 and SGSN2, and be that example is introduced mobile terminal registers method in the Pool district that the embodiment of the invention provides as access network entity with RNC.The concrete implementation procedure of mobile terminal registers method is similar with Fig. 4 in the Pool district of BSC during as access network entity, and therefore, the embodiment of the invention three is not repeated.In the method that Fig. 3 describes; RNC can get rid of the unusual SGSN of appearance in the Pool district, and opens preferred SGSN function and write down the consistent SGSN Capacity Ratio of priority level and/or portable terminal access number of times (SGSN Capacity Ratio and/or portable terminal insert number of times and can be regarded as the SGSN weight).In addition, the SGSN in the Pool district also can notify this SGSN of RNC unusual judging the unavailable and/or gn interface of Gr interface when unavailable.
As shown in Figure 4, the implementation procedure of mobile terminal registers method is following in a kind of Pool district:
41, the Attach Request message Attach Request that carries P-TMSI of mobile terminal UE transmission gives RNC.
Wherein, the P-TMSI that carries among the Attach Request message Attach Request is that SGSN2 is that mobile terminal UE is distributed, and includes the NRI of SGSN2 among this P-TMSI.
42, RNC selects the highest SGSN1 of priority level from the SGSN state table; Wherein, the SGSN2 that RNC is corresponding is unusual.
43, the RNC Attach Request message Attach Request that will carry P-TMSI is sent to SGSN1.
Wherein, because the highest SGSN of priority level that RNC selects from the SGSN state table has and only have one of SGSN1, so the NRI of the SGSN2 that comprises among the P-TMSI of UE transmission is inoperative.
44, message Attach Accept is accepted in adhering to that RNC reception SGSN1 returns.
Wherein, adhering to that SGSN1 returns accepted to carry the P-TMSI that SGSN1 is the mobile terminal UE distribution among the message Attach Accept, includes the NRI of SGSN1 among this P-TMSI.
45, RNC accepts message Attach Accept with adhering to of returning of SGSN1 and sends to mobile terminal UE, accomplishes the registration of mobile terminal UE.
As shown in Figure 4, the implementation procedure of mobile terminal registers method is following in the another kind of Pool district:
51, the Attach Request message Attach Request that carries P-TMSI of mobile terminal UE transmission gives RNC.
Wherein, the P-TMSI that carries among the Attach Request message Attach Request is that SGSN1 is that mobile terminal UE is distributed, and includes the NRI of SGSN1 among this P-TMSI.
52, RNC selects the highest SGSN2 of priority level from the SGSN state table;
Wherein, RNC detects the corresponding SGSN2 of RNC through the front describing method and recovers normal, and RNC writes the SGSN state table with SGSN2 and priority level thereof, and the priority level of SGSN2 is the highest.
53, the RNC Attach Request message Attach Request that will carry P-TMSI is sent to SGSN2.
Wherein, because the highest SGSN of priority level that RNC selects from the SGSN state table has and only have one of SGSN2, so the NRI of the SGSN1 that comprises among the P-TMSI of UE transmission is inoperative.
54, message Attach Accept is accepted in adhering to that RNC reception SGSN2 returns.
Wherein, adhering to that SGSN2 returns accepted to carry the P-TMSI that SGSN2 is the mobile terminal UE distribution among the message Attach Accept, includes the NRI of SGSN2 among this P-TMSI.
55, RNC accepts message Attach Accept with adhering to of returning of SGSN2 and sends to mobile terminal UE, accomplishes the registration of mobile terminal UE.
The embodiment of the invention three can improve the flexibility that SGSN selects; Particularly when the corresponding SGSN of RNC is unusual; Can register for the SGSN that portable terminal selects SGSN immediate SGSN corresponding with RNC or portable terminal to insert minimum number, improved the flexibility that SGSN selects.
Embodiment four:
See also Fig. 5, the structure chart of a kind of access network entity that Fig. 5 provides for the embodiment of the invention four is applied to the Pool district.Wherein, the access network entity that the embodiment of the invention four provides can be RNC, can be BSC also, and the embodiment of the invention does not limit.As shown in Figure 5, this access network entity can comprise:
First module 501 is used for the request message that mobile terminal receive sends, and this request message carries the identification information of portable terminal, and this request message carries out mobile terminal registers in order to request.
Wherein, above-mentioned request message comprises Attach Request message and/or router update inquiry information.
Second unit 502, it is normal to be used for selecting state from the SGSN state table, and the highest SGSN of priority level.
Wherein, The SGSN that priority level is the highest can be the corresponding SGSN of access network entity; Also can be the corresponding SGSN of access network entity when unusual, apart from the corresponding nearest SGSN of SGSN of access network entity, perhaps also can be the SGSN that portable terminal inserts minimum number; Can be other SGSN, the embodiment of the invention limit yet.
Wherein, above-mentioned distance can be a physical distance, also can be that route distance leaves, and the embodiment of the invention does not limit.
The 3rd unit 503 is used for above-mentioned request message is sent to the highest SGSN of priority level, to accomplish the registration of said portable terminal.
As a kind of optional execution mode, first module 501 can also be used to receive the registration completion response message that the highest SGSN of priority level returns;
Correspondingly, access network entity shown in Figure 5 can also comprise the 4th unit 504, is used for that response message is accomplished in above-mentioned registration and sends to portable terminal, accomplishes the registration of portable terminal.
In the embodiment of the invention, a SGSN state table be can store in second unit 502, normal SGSN of recording status and priority level thereof are used to come.For instance, when the corresponding SGSN of access network entity was unusual, the SGSN that priority level is the highest can be the SGSN immediate SGSN corresponding with access network entity, also can be the SGSN that portable terminal inserts minimum number.Obviously, when the corresponding SGSN of access network entity was unusual, the quantity of the SGSN immediate SGSN corresponding with access network entity can be one or at least two; Equally, the quantity of the SGSN of portable terminal access minimum number also can be one or at least two.That is to say that when the corresponding SGSN of access network entity was unusual, the quantity of the SGSN that the priority level that second unit 502 selects is the highest can be one or at least two from the SGSN state table.Certainly; At the corresponding SGSN of access network entity just often; The highest SGSN of priority level that second unit 502 selects from the SGSN state table can be the corresponding SGSN of access network entity, makes portable terminal to register by the corresponding SGSN of preferred access network entity.Obviously, if the highest SGSN of priority level that second unit 502 selects from the SGSN state table is the corresponding SGSN that is access network entity, the quantity of the SGSN that then priority level that from the SGSN state table, selects of second unit 502 is the highest just is one.
Alternatively; In the SGSN state table of above-mentioned Unit second 502 storages; To the normal SGSN of each state, can also write down its corresponding capacity, portable terminal access number of times and the interior portable terminal access failure number of times of certain hour and reason or the like, the embodiment of the invention does not limit.
As a kind of optional execution mode, the identification information of portable terminal can be the IMSI of portable terminal.
As above-mentioned said; The SGSN quantity that the priority level that second unit 502 selects from the SGSN state table is the highest can be at least two; So when the identification information of portable terminal is the IMSI of portable terminal; The 3rd unit 503 specifically is used for the Capacity Ratio according to the highest SGSN of pre-configured above-mentioned at least two priority levels, and request message is sent to the corresponding SGSN among the highest SGSN of above-mentioned at least two priority levels, to accomplish the registration of portable terminal; Perhaps be used for request message is sent to the portable terminal access minimum number person of the highest SGSN of above-mentioned at least two priority levels, to accomplish the registration of portable terminal.
As a kind of optional execution mode, the identification information of portable terminal can be the P-TMSI of portable terminal.
As above-mentioned said; The SGSN quantity that the priority level that second unit 502 selects from the SGSN state table is the highest can be at least two; When the identification information of portable terminal was the P-TMSI of portable terminal, the structure chart of the 3rd unit 503 can be as shown in Figure 6, comprising so:
First module 5031 is used for parsing NRI from the P-TMSI that above-mentioned request message carries;
Second module 5032 is used for judging the SGSN that whether has the NRI sign the highest SGSN of the priority level that selects from the SGSN state table;
Three module 5033 is used in the judged result of second module 5032 when being, request message is sent to the SGSN of NRI sign, to accomplish the registration of portable terminal.
As a kind of optional execution mode, the 3rd unit 503 can also comprise four module 5034:
Four module 5034; Be used in the judged result of second module 5032 for not the time; Capacity Ratio according to the highest SGSN of pre-configured above-mentioned at least two priority levels; Request message is sent to the corresponding SGSN among the highest SGSN of above-mentioned at least two priority levels, to accomplish the registration of portable terminal; Perhaps be used for request message is sent to the portable terminal access minimum number person of the highest SGSN of above-mentioned at least two priority levels, to accomplish the registration of portable terminal.
For instance; It is normal to suppose that second unit 502 selects state from the SGSN state table, and the highest SGSN of priority level comprises SGSNI and SGSN3, and wherein SGSNI is consistent with the SGSN3 priority level; And the Capacity Ratio of SGSNI and SGSN3 is 2: 3; When second module 5032 was judged the SGSN that the NRI that do not exist first module parses to go out among SGSNI and the SGSN3 identifies so, four module 5034 can produce a random number n at random, and this random number n is done mould 5 (5=2+3) computing; If operation result is in (0～1) scope, then four module 5034 can be sent to SGSN1 with request message and registers; If operation result is in (2～4) scope, then four module 5034 can be sent to SGSN3 with request message and registers.
Please consult Fig. 7 in the lump, the structure chart of a kind of access network entity that Fig. 7 obtains after optimizing for access network entity shown in Figure 6 is further.Compare with access network entity shown in Figure 6, access network entity shown in Figure 7 also comprises:
The 5th unit 505; Be used for after first module 501 receives the request message of portable terminal transmission, detect the SGSN function and whether open, if; It is normal then to notify second unit 502 from preset SGSN state table, to select state, and the highest SGSN of priority level; If not, then, request message is sent to corresponding SGSN, to accomplish the registration of portable terminal according to pre-configured SGSN Capacity Ratio;
Correspondingly, first module 501 also is used to receive the registration completion response message that corresponding SGSN returns;
The registration that the 5th unit 505 is used for that also corresponding SGSN is returned is accomplished response message and is sent to portable terminal, accomplishes the registration of portable terminal.
Please consult Fig. 8 in the lump, the structure chart of the another kind of access network entity that Fig. 8 obtains after optimizing for access network entity shown in Figure 7 is further.Compare with access network entity shown in Figure 7, access network entity shown in Figure 8 also comprises:
The 6th unit 506; Each SGSN that is used in the Pool district sends the detection signaling; And whether detection receives the detection signaling response that the SGSN in the Pool district returns to the detection signaling in Preset Time; If it is normal then to confirm to return the SGSN that surveys signaling response, and will return the SGSN that surveys signaling response with and priority level write the SGSN state table; If it is unusual, then not confirm not return the SGSN that surveys signaling response.
Please consult Fig. 9 in the lump, the structure chart of the another kind of access network entity that Fig. 9 obtains after optimizing for access network entity shown in Figure 7 is further.Compare with access network entity shown in Figure 7, access network entity shown in Figure 9 also comprises:
The 7th unit 507 is used to receive the broadcast that the arbitrary SGSN in the Pool district sends, and this broadcast is used to indicate this SGSN unusual; Wherein, this SGSN can comprise unusually that the Gr interface of this SGSN is unavailable, gn interface is unavailable or the like; And all the other SGSN except that this SGSN are normal in definite Pool district, and with all the other SGSN with and priority level write the SGSN state table.
In the access network entity that the embodiment of the invention provides; After the request message that receives the portable terminal transmission; Can from the SGSN state table, select the highest SGSN of priority level, and this request message is sent to the highest SGSN of priority level, to accomplish the registration of portable terminal.This shows; The embodiment of the invention can improve the flexibility that SGSN selects; Particularly when the corresponding SGSN of access network entity is unusual; Can register for the SGSN that portable terminal selects SGSN immediate SGSN corresponding with access network entity or portable terminal to insert minimum number, improved the flexibility that SGSN selects.
Embodiment five:
See also Figure 10, mobile terminal registers system in a kind of Pool district that Figure 10 provides for the embodiment of the invention.Shown in figure 10, this system can comprise:
At least one portable terminal 1001 and access network entity 1002;
Wherein, portable terminal 1001 is used to send a request message to access network entity 1002, and this request message carries the identification information of portable terminal 1001, and described request message is carried out mobile terminal registers in order to request.
Wherein, described request message comprises Attach Request message and/or router update inquiry information.
Wherein, portable terminal 1001 can also receive the registration completion response message that access network entity 1002 is sent, and accomplishes the registration of portable terminal 1001.
Wherein, access network entity 1002 can be RNC, also can be BSC.
Wherein, the structure of access network entity 1002, function are identical with structure, the function of any one access network entity among Fig. 5～Fig. 9, and the embodiment of the invention is not repeated.
Wherein, the dotted line between portable terminal 1001 and the access network entity 1002 is represented wireless connections.
The system that the embodiment of the invention provides can improve the flexibility that SGSN selects; Particularly when the corresponding SGSN of access network entity is unusual; Can register for the SGSN that portable terminal selects SGSN immediate SGSN corresponding with access network entity or portable terminal to insert minimum number, improved the flexibility that SGSN selects.
In the embodiment of the invention, after local SGSN was unusual, RNC can register near RNC corresponding SGSN's or portable terminal access least number of times SGSN for the preferred Pool of portable terminal district, and need not to carry out the polling of all the other a plurality of SGSN.
In the embodiment of the invention; After the corresponding SGSN of RNC recovers normally; RNC can migrate to the corresponding SGSN of RNC with portable terminal automatically and register, and registers and need not with manual mode portable terminal to be migrated to the corresponding SGSN of RNC, and can accomplish moving back of whole portable terminals; Can solve the defective that RNC can't successfully move the user who in the migration flow process, does not adhere in the existing Pool district; Thereby the user in the migration flow process, not adhering to can't successfully move, and realizes that 100% user moves back
In the embodiment of the invention; Because some cells that pass to GGSN can be set on SGSN; Belong to time zone (TZ) for GGSN such as charging property strategy (CC), SGSN so realized flexible communication indirectly; And the parameter value of different service quality (QoS), guaranteed professional bigger reliability simultaneously.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), various media that can be program code stored such as magnetic disc or CD.
More than in a kind of Pool district that the embodiment of the invention is provided mobile terminal registers method and system, access network entity carried out detailed introduction; Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (25)

1. mobile terminal registers method in the Pool district is characterized in that, comprising:
The request message that the access network entity mobile terminal receive sends, described request message carries the identification information of said portable terminal, and described request message is carried out mobile terminal registers in order to request;
Said access network entity selects state from general packet wireless service support node SGSN state table normal, and the highest SGSN of priority level;
Said access network entity is sent to the highest SGSN of said priority level with described request message, to accomplish the registration of said portable terminal.
2. mobile terminal registers method according to claim 1 is characterized in that, also comprises:
Said access network entity receives the registration completion response message that the highest SGSN of said priority level returns;
Said access network entity is accomplished response message with said registration and is sent to said portable terminal, accomplishes the registration of said portable terminal.
3. mobile terminal registers method according to claim 1 and 2; It is characterized in that; The highest SGSN of said priority level is the corresponding SGSN of said access network entity; Or the distance SGSN immediate SGSN corresponding with said access network entity, or portable terminal inserts the SGSN of minimum number.
4. according to claim 1,2 or 3 described mobile terminal registers methods, it is characterized in that said identification information comprises international mobile subscriber identity IMSI.
5. mobile terminal registers method according to claim 4; It is characterized in that; If the highest SGSN quantity of said priority level is at least two, then said access network entity is sent to the highest SGSN of said priority level with described request message, comprises with the registration of accomplishing said portable terminal:
Said access network entity is sent to the corresponding SGSN among the highest SGSN of said at least two priority levels with described request message, to accomplish the registration of said portable terminal according to the Capacity Ratio of the highest SGSN of pre-configured said at least two priority levels;
Perhaps, said access network entity inserts minimum number person with the portable terminal that described request message is sent among the highest SGSN of said two priority levels at least, to accomplish the registration of said portable terminal.
6. according to claim 1,2 or 3 described mobile terminal registers methods, it is characterized in that said identification information comprises temporary mobile subscriber identity P-TMSI.
7. mobile terminal registers method according to claim 6; It is characterized in that; If the highest SGSN quantity of said priority level is at least two, then said access network entity is sent to the highest SGSN of said priority level with described request message, comprises with the registration of accomplishing said portable terminal:
Said access network entity parses network resource identifier NRI from said P-TMSI;
Said access network entity is judged the SGSN that whether has said NRI sign at least among the highest SGSN of said two priority levels, if exist, then described request message is sent to said NRI sign SGSN, to accomplish the registration of said portable terminal.
8. mobile terminal registers method according to claim 7 is characterized in that, also comprises:
If there is not the SGSN of said NRI sign at least among the highest SGSN of said two priority levels; Then said access network entity is according to the Capacity Ratio of the highest SGSN of pre-configured said at least two priority levels; Described request message is sent to the corresponding SGSN among the highest SGSN of said at least two priority levels, to accomplish the registration of said portable terminal;
Perhaps, said access network entity inserts minimum number person with the portable terminal that described request message is sent among the highest SGSN of said two priority levels at least, to accomplish the registration of said portable terminal.
9. according to each described mobile terminal registers method of claim 1～8, it is characterized in that, after the request message that said access network entity mobile terminal receive sends, also comprise:
Whether said access network entity detects preferred SGSN function and opens, if it is normal that then said access network entity is carried out the state that from said SGSN state table, selects, and the step of the highest SGSN of priority level.
10. mobile terminal registers method according to claim 9 is characterized in that, also comprises:
Do not open if detect said preferred SGSN function, then said access network entity is sent to corresponding SGSN according to the Capacity Ratio of pre-configured SGSN with described request message, to accomplish the registration of said portable terminal.
11. according to each described mobile terminal registers method of claim 1～10, it is characterized in that, also comprise:
Said access network entity each SGSN in said Pool district sends and surveys signaling;
Said access network entity detects the SGSN that in Preset Time, whether receives in the said Pool district and is directed against the detection signaling response that said detection signaling is returned; If; It is normal then to confirm to return the SGSN that surveys signaling response, and will return the SGSN that surveys signaling response with and priority level write said SGSN state table.
12. according to each described mobile terminal registers method of claim 1～10, it is characterized in that, also comprise:
Said access network entity receives the broadcast that the arbitrary SGSN in the said Pool district sends, and said broadcast is used to indicate said arbitrary SGSN unusual;
Said access network entity confirms that all the other SGSN except that said arbitrary SGSN are normal in the said Pool district, and with said all the other SGSN with and priority level write said SGSN state table.
13. an access network entity is applied to the Pool district, it is characterized in that, comprising:
First module is used for the request message that mobile terminal receive sends, and described request message carries the identification information of said portable terminal; Described request message is carried out mobile terminal registers in order to request;
Unit second, it is normal to be used for selecting state from general packet wireless service support node SGSN state table, and the highest SGSN of priority level;
Unit the 3rd is used for described request message is sent to the highest SGSN of said priority level, to accomplish the registration of said portable terminal.
14. access network entity according to claim 13 is characterized in that, said first module also is used to receive the registration completion response message that the highest SGSN of said priority level returns;
Said access network entity also comprises:
Unit the 4th is used for that response message is accomplished in said registration and sends to said portable terminal, accomplishes the registration of said portable terminal.
15. according to claim 13 or 14 described access network entity; It is characterized in that; The highest SGSN of said priority level is the corresponding SGSN of said access network entity; Or the distance SGSN immediate SGSN corresponding with said access network entity, or portable terminal inserts the SGSN of minimum number.
16., it is characterized in that said identification information comprises international mobile subscriber identity IMSI according to claim 13,14 or 15 described access network entity.
17. access network entity according to claim 16; It is characterized in that; If the highest SGSN quantity of said priority level is at least two; Then said Unit the 3rd specifically is used for the Capacity Ratio according to the highest SGSN of pre-configured said at least two priority levels, described request message is sent to the corresponding SGSN among the highest SGSN of said at least two priority levels, to accomplish the registration of said portable terminal; Perhaps be used for described request message is sent to the portable terminal access minimum number person of the highest SGSN of said at least two priority levels, to accomplish the registration of said portable terminal.
18., it is characterized in that said identification information comprises temporary mobile subscriber identity P-TMSI according to claim 13,14 or 15 described access network entity.
19. access network entity according to claim 18 is characterized in that, if the highest SGSN quantity of said priority level is at least two, then said Unit the 3rd comprises:
First module is used for parsing network resource identifier NRI from said P-TMSI;
Second module is used for judging the SGSN that whether has said NRI sign at least from the highest SGSN of said two priority levels;
Three module is used in the judged result of said second module when being, described request message is sent to the SGSN of said NRI sign, to accomplish the registration of said portable terminal.
20. access network entity according to claim 19 is characterized in that, said Unit the 3rd also comprises:
Four module; Be used in the judged result of said second module for not the time; Capacity Ratio according to the highest SGSN of pre-configured said at least two priority levels; Described request message is sent to the corresponding SGSN among the highest SGSN of said at least two priority levels, to accomplish the registration of said portable terminal; The portable terminal that perhaps described request message is sent among the highest SGSN of said two priority levels at least inserts minimum number person, to accomplish the registration of said portable terminal.
21. according to the described access network entity of claim 13～20, it is characterized in that, also comprise:
Unit the 5th; Be used for after said first module receives the request message of portable terminal transmission; Whether detect preferred generic packet wireless service support node SGSN function opens; If it is normal then to notify said Unit second from said SGSN state table, to select state, and the highest SGSN of priority level.
22. access network entity according to claim 21 is characterized in that,
Do not open if detect said preferred SGSN function, then Unit the 5th also is used for the Capacity Ratio according to pre-configured SGSN, and described request message is sent to corresponding SGSN, to accomplish the registration of said portable terminal.
23. according to each described access network entity of claim 13～22, it is characterized in that, also comprise:
Unit the 6th; Each SGSN that is used in said Pool district sends the detection signaling; And whether detection receives the detection signaling response that the SGSN in the said Pool district returns to said detection signaling in Preset Time; If it is normal then to confirm to return the SGSN that surveys signaling response, and will return the SGSN that surveys signaling response with and priority level write said SGSN state table.
24. according to each described access network entity of claim 13～22, it is characterized in that, also comprise:
Unit the 7th is used to receive the broadcast that the arbitrary SGSN in the said Pool district sends, and said broadcast is used to indicate said arbitrary SGSN unusual; And confirm that all the other SGSN except that said arbitrary SGSN are normal in the said Pool district, and with said all the other SGSN with and priority level write said SGSN state table.
25., it is characterized in that said access network entity comprises radio network controller (RNC) or base station controller BSC according to each described access network entity of claim 13～24.
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