CN102833819A - NAS (Non-Access Stratum) node selecting method and device - Google Patents
NAS (Non-Access Stratum) node selecting method and device Download PDFInfo
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- CN102833819A CN102833819A CN201210275103XA CN201210275103A CN102833819A CN 102833819 A CN102833819 A CN 102833819A CN 201210275103X A CN201210275103X A CN 201210275103XA CN 201210275103 A CN201210275103 A CN 201210275103A CN 102833819 A CN102833819 A CN 102833819A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Abstract
The invention provides an NAS (Non-Access Stratum) node selecting method and device. The method comprises the following steps that an eNodeB selects an NAS node for an UE according to a PLMN (Public Land Mobile Network) selected for UE (User Equipment) access; if the NAS node selection fails, the eNodeB assigns an NAS node for the UE according to information carried by the UE in an RRC (Radio Resource Control) connection establishment request message or an RRC connection establishment completion message; or the eNodeB assigns an NAS node for the UE according to local policy. The NSA node selecting method and device provided by the invention have the beneficial effect that through assigning the NAS node for the UE according to the information carried by the UE in the RRC connection establishment request message or the RRC connection establishment completion message, Or assigning by the eNodeB the NAS node for the UE according to local policy, the UE access success rate is improved.
Description
Technical field
The present invention relates to the communications field, in particular to the system of selection and the device of a kind of NSA (Non-Access-Stratum, Non-Access Stratum) node.
Background technology
At E-UTRAN (Evolved-Universal Terrestrial Radio Access Network; The universal terrestrial access network of evolution) in; ENodeB need select the NAS node for the UE of request access network; The MME (Mobility Management Entity, Mobility Management Entity) that promptly inserts.
Under the network shared environment, eNodeB possibly support a plurality of PLMN (Public Land Mobile Network, public land mobile network), also possibly issue a plurality of PLMN in the cell system broadcasting.The PLMN set that all sub-districts are supported under eNodeB has the Served PLMN that MME the supported set that is connected inequality with all with eNodeB; The part MME that perhaps is connected with eNodeB is connected disconnection with eNodeB; ENodeB then may occur and in Cell Broadcast CB, issue the eNodeB support but the unsupported PLMN of MME of its connection,, will fail when then eNodeB is UE selection NAS node if UE has selected these PLMN to insert; Can not find the MME that can support this PLMN, access failure.
To having selected the eNodeB support at UE in the correlation technique, but when the unsupported PLMN of MME inserts, how, effective solution is not proposed as yet at present for the problem of UE selection NAS node.
Summary of the invention
The invention provides a kind of system of selection and device of NSA node, above-mentionedly selected the eNodeB support, but when the unsupported PLMN of MME inserts, how be the problem of UE selection NAS node at UE to solve at least.
According to an aspect of the present invention, a kind of system of selection of NSA node is provided, has comprised: it is that UE selects the NAS node that eNodeB inserts the PLMN that selects according to UE; If the NAS node is selected failure, then eNodeB connects at RRC (Radio Resource Control, radio resource control) according to UE that to set up the information of carrying in request message or the RRC connection setup complete message be that UE specifies a NAS node; Perhaps eNodeB is that UE specifies a NAS node according to local policy.
Preferably, the NAS node is Mobility Management Entity MME.
Preferably, if all MME that are connected with eNodeB supported PLMN not, perhaps the MME of supported PLMN is in eNodeB and is connected off-state, then confirms as the NAS node and selects failure.
Preferably, the eNodeB PLMN information that access is selected according to UE is that UE selects also to comprise before the NAS node: UE selects a PLMN to initiate to insert calling from a plurality of PLMN that broadcast system information issues.
Preferably, eNodeB connects at RRC according to UE that to set up the information of carrying in request message or the RRC connection setup complete message be that UE specifies a NAS node; Perhaps eNodeB is that UE specifies a NAS node according to local policy, and comprising: eNodeB sets up the access MME that the registration MME that carries in request message or the RRC connection setup complete message is appointed as UE with UE in the RRC connection; Perhaps eNodeB is that UE specifies one to insert MME according to local policy.
Preferably, inserting the type of calling out is urgent call.
According to a further aspect in the invention, a kind of choice device of NSA node is provided, has been positioned at the eNodeB side, having comprised: select module, being used for inserting the PLMN that selects according to UE is that UE selects the NAS node; Designated module is used for selecting under the situation of failure at the NAS node, and setting up the information of carrying in request message or the RRC connection setup complete message according to UE in the RRC connection is that UE specifies a NAS node; Be that UE specifies a NAS node perhaps according to local policy.
Preferably, the NAS node is Mobility Management Entity MME.
Preferably, if all MME that are connected with eNodeB supported PLMN not, perhaps the MME of supported PLMN is in eNodeB and is connected off-state, then confirms as the NAS node and selects failure.
Preferably, designated module comprises: first specifies submodule, is used for UE connected at RRC setting up the access MME that registration MME that request message or RRC connection setup complete message carry is appointed as UE; Second specifies submodule, and being used for according to local policy is that UE specifies one to insert MME.
Preferably, this device also comprises: judge module is used for judging and inserting whether the type of calling out is urgent call, if then call designated module selecting module to select under the situation of failure.
Through the present invention, adopting and setting up the information of carrying in request message or the RRC connection setup complete message according to UE in the RRC connection is that UE specifies a NAS node; Perhaps eNodeB is that UE specifies a NAS node according to local policy; Thereby solved at UE and selected the eNodeB support; When but the unsupported PLMN of MME inserts,, and then reached the effect of the success rate that improves the UE access how for UE selects the problem of NAS node.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the NSA node selecting method flow chart according to the embodiment of the invention;
Fig. 2 is the NSA node choice device structured flowchart according to the embodiment of the invention;
Fig. 3 is the NSA node selecting method flow chart according to the embodiment of the invention one;
Fig. 4 is the NSA node selecting method flow chart according to the embodiment of the invention two;
Fig. 5 is the NSA node selecting method flow chart according to the embodiment of the invention three.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Fig. 1 is the NSA node selecting method flow chart according to the embodiment of the invention.As shown in Figure 1, may further comprise the steps:
Step S102, it is that UE selects the NAS node that eNodeB inserts the PLMN that selects according to UE.
Step S104, if the NAS node is selected failure, then eNodeB connects at RRC according to UE that to set up the information of carrying in request message or the RRC connection setup complete message be that UE specifies a NAS node; Perhaps eNodeB is that UE specifies a NAS node according to local policy.
In the present embodiment, be that UE specifies a NAS node through setting up the information of carrying in request message or the RRC connection setup complete message in the RRC connection according to UE; Perhaps eNodeB is that UE specifies a NAS node according to local policy; Thereby solved at UE and selected the eNodeB support; When but the unsupported PLMN of MME inserts,, and then reached the effect of the success rate that improves the UE access how for UE selects the problem of NAS node.
Wherein, in above-mentioned steps S102, when the UE of urgent call inserted, eNodeB was that UE selects MME.
Wherein, in above-mentioned steps S104, if eNodeB can not find the MME that can support the selected PLMN of UE.Then eNodeB judges whether the access style of UE is urgent call.If urgent call; Then eNodeB is no matter whether MME supports the PLMN that UE selects, and ask (RRC Connection Setup Request) or RRC to connect setting up the registration MME information of carrying in completion (RRC Connection Setup Request Complete) message in RRC connection foundation according to UE is that MME of UE selection does access according to local policy perhaps.
Even the PLMN of UE selection does not support that in core net eNodeB also can choose the NAS node for the UE of urgent call like this, improve UE and insert success rate.
Fig. 2 is the NSA node choice device structured flowchart according to the embodiment of the invention.This choice device is positioned at the eNodeB side, and is as shown in Figure 2, comprising: select module 10, being used for inserting the PLMN that selects according to UE is that UE selects the NAS node; Designated module 20 is used for selecting under the situation of failure at the NAS node, and setting up the information of carrying in request message or the RRC connection setup complete message according to UE in the RRC connection is that UE specifies a NAS node; Be that UE specifies a NAS node perhaps according to local policy.Wherein, select module 10 and designated module 20 to be coupled.
In the present embodiment, be that UE specifies a NAS node through setting up the information of carrying in request message or the RRC connection setup complete message in the RRC connection according to UE; Perhaps eNodeB is that UE specifies a NAS node according to local policy; Thereby solved at UE and selected the eNodeB support; When but the unsupported PLMN of MME inserts,, and then reached the effect of the success rate that improves the UE access how for UE selects the problem of NAS node.
Wherein, the NAS node is Mobility Management Entity MME.
Wherein, if all MME that are connected with eNodeB supported PLMN not, perhaps the MME of supported PLMN is in eNodeB and is connected off-state, confirms that then the NAS node selects failure.
Wherein, designated module 20 also comprises: first specifies submodule 22, is used for UE connected at RRC setting up the access MME that registration MME that request message or RRC connection setup complete message carry is appointed as UE; Second specifies submodule 24, and being used for according to local policy is that UE specifies one to insert MME.
Wherein, this choice device also comprises: judge module 30 is used for judging and inserting whether the type of calling out is urgent call, if then call designated module 20 selecting module 10 to select under the situation of failure.
Fig. 3 is the NSA node selecting method flow chart according to the embodiment of the invention one.As shown in Figure 3, may further comprise the steps:
Step S302, UE receives broadcast system information, from the PLMN that system information issues, select PLMN3 to initiate the urgent call type and insert, here the PLMN that issues of system information can have a plurality of, for example, PLMN1, PLMN2, PLMN3.
Step S304, the PLMN3 that eNodeB selects according to UE are that UE selects MME.
Step S306; Because all MME that eNodeB connects are supported PLMN 3 not; ENodeB selects less than supporting UE to select the MME of PLMN, and eNodeB judges whether UE is the UE that the urgent call type inserts, if; ENodeB judges that RRC connects and sets up request message and whether carried S-TMSI (SAE Temporary Mobile Subscriber Identity, SAE move contracted user's sign temporarily so; SAE:System Architecture Evolution, the system architecture artistic skills), if carried, eNodeB is that UE selects a MME according to the information of S-TMSI so.If do not carry, eNodeB judges and whether has carried RegisteredMME in the RRC connection setup complete message (registration MME) information so, if carried, eNodeB is that UE selects a MME according to RegisteredMME information so.If do not carry, eNodeB is that UE selects MME according to local policy so.
Step S308, eNodeB and selected MME continue to carry out the access procedure of UE.
Fig. 4 is the NSA node selecting method flow chart according to the embodiment of the invention two.As shown in Figure 4, may further comprise the steps:
Step S402, UE receives broadcast system information, from the PLMN that system information issues, select PLMN3 to initiate the urgent call type and insert, here the PLMN that issues of system information can have a plurality of, for example, PLMN1, PLMN2, PLMN3.
Step S404, the PLMN information that eNodeB selects according to UE is that UE selects MME.
Step S406, because the MME of supported PLMN 3 is connected disconnection with eNodeB, eNodeB can't select this MME for UE.This moment, eNodeB selected less than supporting UE to select the MME of PLMN; ENodeB judges whether UE is the UE that the urgent call type inserts; If; ENodeB judges that RRC connects and sets up request message and whether carried S-TMSI (SAETemporary Mobile Subscriber Identity, SAE move contracted user's sign temporarily so; SAE:System Architecture Evolution, the system architecture artistic skills), if carried, eNodeB is that UE selects a MME according to the information of S-TMSI so.If do not carry, eNodeB judges and whether has carried RegisteredMME in the RRC connection setup complete message (registration MME) information so, if carried, eNodeB is that UE selects a MME according to RegisteredMME information so.If do not carry, eNodeB is that UE selects MME according to local policy so.
Step S408, eNodeB and selected MME continue to carry out the access procedure of UE.
Fig. 5 is the NSA node selecting method flow chart according to the embodiment of the invention three.As shown in Figure 5, may further comprise the steps:
Step S502, Ue receives broadcast system information, from the PLMN that system information issues, selects a PLMN to initiate the urgent call type and inserts
Step S504, the PLMN information that eNodeB selects according to UE is that UE selects MME
Step S506, if eNodeB selects less than supporting UE to select the MME of PLMN, eNodeB judges whether UE is the UE that the urgent call type inserts, if eNodeB is that UE selects a MME to insert according to the load balancing principle so.
Step S508, eNodeB and selected MME continue to carry out the access procedure of UE.
In another embodiment, a kind of software that is used to select the NSA node is provided also, this software is used for carrying out the technical scheme that the foregoing description is described.
In another embodiment, a kind of storage medium is provided also, has stored above-mentioned software in this storage medium, this storage medium includes but not limited to CD, floppy disk, hard disk, scratch pad memory etc.
In above-mentioned each embodiment of the present invention, setting up the information of carrying in request message or the RRC connection setup complete message according to UE in the RRC connection is that UE specifies a NAS node; Perhaps eNodeB is that UE specifies a NAS node according to local policy, and the PLMN that makes in the UE selection is under the unsupported situation of core net, and eNodeB also can choose the NAS node for the UE of urgent call, improves the effect that UE inserts success rate thereby reach.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the system of selection of a NSA node is characterized in that, comprising:
It is that said UE selects the NAS node that eNodeB inserts the PLMN that selects according to UE;
If said NAS node is selected failure, it is that said UE specifies a NAS node that then said eNodeB sets up the information of carrying in request message or the RRC connection setup complete message according to said UE in the RRC connection; Perhaps said eNodeB is that said UE specifies a NAS node according to local policy.
2. method according to claim 1 is characterized in that, said NAS node is Mobility Management Entity MME.
3. method according to claim 2; It is characterized in that; If all MME that are connected with said eNodeB do not support said PLMN, perhaps support the MME of said PLMN to be in and be connected off-state with said eNodeB, then confirm as said NAS node and select failure.
4. method according to claim 1 is characterized in that, the eNodeB PLMN information that access is selected according to UE is that said UE selects also to comprise before the NAS node:
Said UE selects a PLMN to initiate to insert calling from a plurality of PLMN that broadcast system information issues.
5. method according to claim 2 is characterized in that, it is that said UE specifies a NAS node that said eNodeB sets up the information of carrying in request message or the RRC connection setup complete message according to said UE in the RRC connection; Perhaps said eNodeB is that said UE specifies a NAS node according to local policy, comprising:
Said eNodeB sets up the access MME that the registration MME that carries in request message or the RRC connection setup complete message is appointed as said UE with said UE in the RRC connection; Perhaps said eNodeB is that said UE specifies one to insert MME according to local policy.
6. according to each described method of claim 1 to 5, it is characterized in that the type that said access is called out is urgent call.
7. the choice device of a NSA node is positioned at the eNodeB side, it is characterized in that, comprising:
Select module, being used for inserting the PLMN that selects according to UE is that said UE selects the NAS node;
Designated module is used for selecting under the situation of failure at said NAS node, and setting up the information of carrying in request message or the RRC connection setup complete message according to said UE in the RRC connection is that said UE specifies a NAS node; Be that said UE specifies a NAS node perhaps according to local policy.
8. device according to claim 7 is characterized in that, said NAS node is Mobility Management Entity MME.
9. device according to claim 8; It is characterized in that; If all MME that are connected with said eNodeB do not support said PLMN, perhaps support the MME of said PLMN to be in and be connected off-state with said eNodeB, then confirm as said NAS node and select failure.
10. device according to claim 8 is characterized in that, said designated module comprises:
First specifies submodule, is used for said UE connected at RRC setting up the access MME that registration MME that request message or RRC connection setup complete message carry is appointed as said UE;
Second specifies submodule, and being used for according to local policy is that said UE specifies one to insert MME.
11. device according to claim 7 is characterized in that, also comprises:
Judge module is used for judging whether the type that said access is called out is urgent call, if then call said designated module selecting module to select under the situation of failure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275103.XA CN102833819B (en) | 2012-08-03 | 2012-08-03 | The system of selection of NAS nodes and device |
| PCT/CN2013/080569 WO2014019521A1 (en) | 2012-08-03 | 2013-07-31 | Method and device for selecting nas node |
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| CN201210275103.XA CN102833819B (en) | 2012-08-03 | 2012-08-03 | The system of selection of NAS nodes and device |
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| CN102833819B CN102833819B (en) | 2018-03-27 |
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Also Published As
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| WO2014019521A1 (en) | 2014-02-06 |
| CN102833819B (en) | 2018-03-27 |
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