CN102378313A - Mobility management entity selecting method and relay node - Google Patents
Mobility management entity selecting method and relay node Download PDFInfo
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- CN102378313A CN102378313A CN2010102627724A CN201010262772A CN102378313A CN 102378313 A CN102378313 A CN 102378313A CN 2010102627724 A CN2010102627724 A CN 2010102627724A CN 201010262772 A CN201010262772 A CN 201010262772A CN 102378313 A CN102378313 A CN 102378313A
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Abstract
The invention discloses a mobility management entity selecting method and a relay node. The method comprises the steps that: when user equipment initially accesses to a region under jurisdiction of the relay node, the relay node selects a mobility management entity for the user equipment; and the relay node transmits an identity of the selected mobility management entity to a donor base station. Through the method, the relay node (RN) can select the mobility management entity (MME) for the user equipment (UE) so as to determine a switching type.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of system of selection and via node of Mobility Management Entity.
Background technology
In order to satisfy the demand that growing big bandwidth high-speed mobile inserts; Third generation partnership project (Third Generation Partnership Projects; Abbreviation 3GPP) releases senior Long Term Evolution (Long-Term Evolution advance is called for short LTE-Advanced) standard.LTE-Advanced is for Long Term Evolution (Long-Term Evolution; Abbreviation LTE) evolution of system has kept the core of LTE; And adopt a series of technology that frequency domain, spatial domain are expanded on this basis, to reach purposes such as improving the availability of frequency spectrum, increase power system capacity.Wireless relay (Relay) technology promptly is one of technology among the LTE-Advanced, is intended to the coverage of Extended Cell, reduces the area, dead angle in the communication; Balanced load; Shift the business of hot zones, saving subscriber equipment (User Equipment is called for short UE) is the transmitting power at terminal.As shown in Figure 1, (Donor-eNB is called for short DeNB in original base station; Or be called the host base station) and UE between increase some new via nodes (Relay-Node is called for short RN), these newly-increased RN both carried out wireless connections with DeNB; Carry out wireless connections with UE again, be implemented between RN and the base station, between the UE of RN and himself management, carry out the relay function of transfer of data, thereby reach the coverage of Extended Cell; Reduce the area, dead angle in the communication; Balanced load, the business of transfer hot zones, the purposes such as transmitting power of saving the terminal.
RN is in order to realize relay function; Set up Radio Resource control (Radio Resource Control in access DeNB jurisdiction district; Abbreviate RRC as) connect after, need set up Data Radio Bearer (Data Radio Bearer is called for short DRB); Be used for from operation and maintenance (Operation & Maintenance; Abbreviation O&M) server is downloaded the configuration information of necessary parameter such as Relay jurisdiction district etc., transmits S1 and the X2 interface signaling of UE under the Relay jurisdiction district, transmits data of UE under the Relay jurisdiction district or the like.
After introducing RN; When UE passes through RN jurisdiction district access network; Access network (RN and DeNB) need be selected suitable core network element Mobility Management Entity (Mobility Management Entity for this UE; Be called for short MME), could set up the RAB (E-UTRAN Radio Access Bearer is called for short E-RAB) of evolution for this UE like this.
In correlation technique,, still, be that the complexity that UE selects MME will cause DeNB to handle increases by DeNB by the MME of S1 gateway (DeNB or femto gateway) selection UE.And because RN does not know the MME for the UE selection, so RN is not sure of switching type (type selecting that S1 switches or X2 switches).
Summary of the invention
Main purpose of the present invention is to provide a kind of selection scheme of Mobility Management Entity, with solve at least S1 gateway in the above-mentioned correlation technique be UE when selecting MME RN do not know to be the problem of the MME that selects of UE.
In order to achieve the above object, according to an aspect of the present invention, a kind of system of selection of Mobility Management Entity is provided.This method comprises: when subscriber equipment initially inserted the via node jurisdiction district, via node was that subscriber equipment is selected Mobility Management Entity; Via node sends the sign of the Mobility Management Entity of selecting to the host base station.
Preferably, via node comprises to the sign of the Mobility Management Entity of host base station transmission selection: via node sends the sign of the Mobility Management Entity of selecting to the host base station through S1 interface signaling, RRC signaling or X2 signaling.
Preferably, the S1 interface signaling comprises: initial user facility information or path handoff request signaling.
Preferably, via node is that subscriber equipment selects Mobility Management Entity to comprise: via node is one of at least subscriber equipment selection Mobility Management Entity according to following information: the Mobility Management Entity information the when load information of setting up reason, Mobility Management Entity of user equipment start service, user equipment registration, the ability information of Mobility Management Entity.
Preferably; Via node is that subscriber equipment selects Mobility Management Entity to comprise: subscriber equipment is initiated in the radio resource control RRC connection procedure in the via node jurisdiction district; When via node received from the RRC connection foundation completion signaling of subscriber equipment, via node was that subscriber equipment is selected Mobility Management Entity; Perhaps subscriber equipment switches to the process of via node jurisdiction district from adjacent base station, and when via node received from the switching completion signaling of subscriber equipment, via node was that subscriber equipment is selected Mobility Management Entity.
Preferably, the group id that is designated Mobility Management Entity of Mobility Management Entity and Mobility Management Entity sign indicating number perhaps are group id, Mobility Management Entity sign indicating number and the public land mobile network PLMN sign of Mobility Management Entity.
To achieve these goals, according to a further aspect in the invention, a kind of via node is provided.This via node comprises: select module, be used for when subscriber equipment initially inserts the via node jurisdiction district, for subscriber equipment is selected Mobility Management Entity; Sending module is used for the sign to the Mobility Management Entity of host base station transmission selection.
Preferably, sending module sends the sign of the Mobility Management Entity of selecting to the host base station through S1 interface signaling, RRC signaling or X2 signaling.
Preferably, the S1 interface signaling comprises: initial user facility information or path handoff request signaling.
Preferably, select module to be one of at least subscriber equipment selection Mobility Management Entity: the Mobility Management Entity information the when load information of setting up reason, Mobility Management Entity of user equipment start service, user equipment registration, the ability information of Mobility Management Entity according to following information.
Preferably; The selection module comprises: receive submodule; Be used for initiating the radio resource control RRC connection procedure in the via node jurisdiction district at subscriber equipment; Reception connects foundation completion signaling from the RRC of subscriber equipment, perhaps switches to from adjacent base station the process of via node jurisdiction district at subscriber equipment, receives from the switching of subscriber equipment and accomplishes signaling; The chooser module is used for when the reception submodule receives RRC connection foundation completion signaling or switches the completion signaling, is subscriber equipment selection Mobility Management Entity.
Preferably, the group id that is designated Mobility Management Entity of Mobility Management Entity and Mobility Management Entity sign indicating number perhaps are group id, Mobility Management Entity sign indicating number and the public land mobile network PLMN sign of Mobility Management Entity.
Through the present invention, adopting RN is the mode that UE selects MME, the problem of the MME that RN does not know to select for UE when having solved S1 gateway in the correlation technique and be UE and selecting MME, thus and then reached RN and can know that the MME that selects for UE can confirm the effect of switching type.
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 sketch map of the network architecture with via node in the correlation technique;
Fig. 2 is the flow chart according to the system of selection of the MME of the embodiment of the invention;
Fig. 3 is the schematic flow sheet according to the access network of the embodiment of the invention one;
Fig. 4 is the switching flow sketch map according to the embodiment of the invention two;
Fig. 5 is the schematic flow sheet according to the access network of the embodiment of the invention three;
Fig. 6 is the structured flowchart according to the via node of the embodiment of the invention;
Fig. 7 is the structured flowchart of the selection module of via node according to the preferred embodiment of the invention.
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.
The embodiment of the invention provides the system of selection of a kind of MME.Fig. 2 is the flow chart according to the system of selection of the MME of the embodiment of the invention, and is as shown in Figure 2, and this method comprises:
When step S202, subscriber equipment initially inserted the via node jurisdiction district, via node was that subscriber equipment is selected MME;
Step S204, via node send the sign of the MME that selects to the host base station.
This embodiment selects MME through using via node rather than DeNB as the user; Reduced the complexity that DeNB handles; Simultaneously, via node can be known the MME that selects for the user, thereby via node can switch for its switching type of selecting to be fit to when subscriber equipment need switch.
In concrete implementation procedure, via node can pass through one of S1 interface signaling, RRC signaling and X2 signaling are sent sign from the MME that selects to the host base station.Wherein, the S1 interface signaling can comprise initial user facility information or path handoff request signaling.This embodiment defines concrete command transmitting, has stronger practicality.Need to prove; If via node sends the MME sign of selecting through RRC signaling or X2 signaling to the host base station; Then also need in this RRC signaling or X2 signaling, carry the identification information of this UE; Simultaneously, the transmission of this RRC signaling or X2 signaling can not be later than initial user facility information or path handoff request signaling, could guarantee the core net that sends to that the host base station can not postponed when receiving initial user facility information or path handoff request signaling like this.
Preferably, via node can one of at least be that subscriber equipment is selected MME: the MME information the when load information of setting up reason, MME of user equipment start service, user equipment registration, the ability information of MME according to following information.The MME that this embodiment is fit to according to different Information Selection under condition of different, the MME that selects can correspond to actual needs.
In practical application,, in process that RRC connects is initiated in the via node jurisdiction district, connect and set up when accomplishing signaling at subscriber equipment when the relaying node receives RRC from subscriber equipment, via node is this subscriber equipment selection MME.Switch to from adjacent base station the process of via node jurisdiction district at subscriber equipment, when the relaying node receives when accomplishing signaling from the switching of subscriber equipment, via node also can be that this subscriber equipment is selected MME.This embodiment has guaranteed that under different scene, via node can be selected MME for subscriber equipment.Need to prove; If via node is selected MME for it in the subscriber equipment handoff procedure; Via node switches preceding MME sign for the UE service except comprising the MME sign of selection, can also comprising in the path handoff request of sending, so that the contextual information of mutual this UE between the MME.
In the above-described embodiments, the sign of MME can be the combination of group id and the MME sign indicating number of MME, also can be the combination of group id, MME sign indicating number and public land mobile network (Public Land Mobile Network the abbreviates PLMN as) sign of MME.This embodiment practicality is stronger.
Below in conjunction with accompanying drawing implementation of the present invention is elaborated.
Embodiment one
RN is in normal operating state after inserting the host base station, can service be provided for the subscriber equipment under its covering.UE is positioned at the RN jurisdiction district, and is in idle condition.Fig. 3 is the schematic flow sheet according to the access network of the embodiment of the invention one, and is as shown in Figure 3, and this flow process comprises:
Step S301, UE initiate in the RN jurisdiction district to insert at random, send RRC connection request (RRC Connection Request) to RN, comprise the identification information of UE in this request and set up cause information (establishment Cause).In the present embodiment, UE sets up former because Client-initiated is called out (mo-Data).
Step S302, RN are the UE Resources allocation after receiving this connection request, send RRC to UE and connect foundation (RRC Connection Setup).
Step S303; UE is after receiving RRC connection foundation; The configuration parameter of using wherein sends RRC connection foundation completion (RRC Connection SetupComplete) to RN; Wherein comprise Non-Access Stratum (Non Access Stratum is called for short NAS) information, the public land mobile network sign (selected PLMN-Identity) of selection and the MME sign (registered MME) of registration.If UE obtains the MME information (globally unique MME identity is called for short GUMMEI) in when registration when being registered to network, UE can notify the network of current access so that obtain the information of this UE from the MME of registration.If UE does not carry the MME sign of registration, the network of the current access of UE can the home subscriber server (Home Subscriber Server abbreviates HSS as) from core net obtains the information of this UE.
Step S304; RN is after receiving RRC connection foundation completion; The information such as MME sign of initiating the professional load information of setting up reason, MME, registration according to UE are that UE selects suitable MME; RN is in order to be embodied as the function of UE selection MME, and needing in the existing base station of succession is the function that subscriber equipment is selected MME, and the method for RN selection MME can be identical with the method for existing base station selected MME.RN selects the method for MME to be: the MME that RN is lighter according to the load selection load of MME; If UE has reported the MME sign of registration, and RN and MME that UE reports set up S1 and be connected (this S1 connects the agency through DeNB), then the MME that can the preferential UE of selection registers of RN; RN need select to support that UE initiates professional MME for UE simultaneously, and when for example UE initiated urgency traffic, RN need select to support the MME of urgency traffic.In the present embodiment, RN according to the load selection of MME load light and support UE to initiate professional MME, the sign of this MME is represented with MME1.RN sends initial user facility information (Initial UE Message) through the S1 interface to the host base station, and wherein comprising RN is the MME sign (being MME1) that UE selects.The MME sign that in existing initial user facility information, has comprised the registration that UE reports; In order to realize the present invention; Need newly-increased cell to represent that RN is the MME (being MME1) that UE selects; Newly-increased cell comprises group id (MME Group ID) and the MME sign indicating number (MME Code) of MME, and this newly-increased cell can also comprise the PLMN sign.If do not exist the PLMN under the MME that network is shared or RN selects consistent with the PLMN sign that UE initiates professional place, newly-increased cell can not comprise the PLMN sign.
Need to prove; RN is when access network; Need set up the S1 interface with the host base station; In the flow process of setting up the S1 interface, obtain the ability information of MME and the list information of MME (being a plurality of MME signs), the load information of the S1 interface acquisition MME that RN can be through foundation when the MME load is overweight in the existing protocol (if can indicate the overweight information of load) to the base station through the host base station; RN also can obtain ability information and the load information of MME from the operation and maintenance server.Therefore, RN can select MME for UE.
Step S305, the host base station is the MME sign that UE selects according to the RN that wherein comprises after receiving the initial user facility information, sends the initial user facility information to this MME.It is the MME sign that UE selects that the initial user facility information of this moment need not comprise RN.Need to prove that the host base station need be the MME sign that UE selects for this UE preserves RN, so that can the up S1 signaling of this UE be sent to correct MME accurately in the up signaling transmission afterwards.
Core net (MME) is after receiving the initial user facility information; This UE is carried out authentication; Send the contextual information of this UE through the host base station to RN, the QoS parameter of the E-RAB that sets up comprising needs etc., RN is used for data access bearer (the Data Radio Bearer of transfer of data for this UE foundation; Be called for short DRB), thus UE can carry out transfer of data and commence business.
If UE changes its position owing to moving; (for example need switch to other sub-districts; Non-DeNB jurisdiction district); RN need select the type of switching for this UE, and RN can pass through its O&M perhaps obtains Target cell affiliated base station (target BS) connection of switching through X2 interface MME identification information.Be the MM E identification information of this UE service because RN has been known, RN can determine the switching type of this UE, if the MME that target BS connects is identical for the MME that this UE selects with RN, then RN can select X2 to switch; If the MME that target BS connects is different for the MME that this UE selects with RN, then RN selects S1 to switch, at this moment.If selecting X2 to switch, RN will cause handoff failure.Because switching, X2 can accelerate the speed that UE switches, and less to the core net influence, so switch if can implement X2; RN can switch by the preferential X2 of selection; But the parameter that RN need obtain to be correlated with just can be done the selection of X2 switching type, otherwise will cause handoff failure.
Embodiment two
RN is in normal operating state after inserting the host base station, can service be provided for the subscriber equipment under its covering.UE is positioned at base stations neighboring (source base station) and is in connection status.There is X2 interface between host base station and the source base station.Surpass predetermined thresholding if UE measures the signal quality of RN jurisdiction district, then send measurement report to source base station, then, source base station is made handover decisions in view of the above, selects the Target cell of RN jurisdiction district for switching.Fig. 4 is the switching flow sketch map according to the embodiment of the invention two, and is as shown in Figure 4, and this flow process comprises:
Step S401, source base station sends handoff request (Handover Request) through X2 interface to the host base station, wherein comprises the sign of Target cell and the contextual information of UE.In this request, can also comprise just being the MME sign of this UE service, this MME sign comprises group id (MME Group ID), MME sign indicating number (MME Code) and the PLMN sign of MME.
Step S402, the host base station is transmitted to RN according to wherein Target Cell Identifier discovery needs with handoff request after receiving handoff request, and the host sends handoff request to RN in the base station.In this request, also comprise the MME information of just serving for this UE.
Step S403, RN are the UE Resources allocation after receiving handoff request, send Handover Request Acknowledge (Handover Request Acknowledge) signaling to the host base station.
Step S404, the host base station can know that according to X2 interface application layer sign (X2AP ID) wherein this Handover Request Acknowledge need send to source base station after receiving Handover Request Acknowledge, then, the host sends Handover Request Acknowledge to source base station in the base station.
Step S405, source base station sends switching command to UE, in prior protocols, adopts the RRC connection to reshuffle signaling and carries mobile control information (mobility Control Info) expression switching command.
Step S406, UE obtain synchronously with Target cell after receiving switching command, initiate access at random at Target cell, send to switch to Target cell and accomplish signaling, and it is that the completion signaling is reshuffled in the RRC connection that signaling is accomplished in this switching.
Step S407; RN is receiving after switching that UE sends accomplishes signaling; Know that UE has switched to the RN jurisdiction district, then, RN is to host base station transmit path handoff request (Path Switch Request); In this path handoff request, comprise newly-increased MME sign cell, comprising group id (MME Group ID), MME sign indicating number (MME Code) and the PLMN sign of MME.The content that comprises in the handoff request in this MME information and the step 302 is identical, is the MME identification information of serving for this UE before switching.Because in the existing protocol, X2 interface agency (proxy) function is realized in the host base station, therefore, the host base station can not save as the MME identification information of this UE service after receiving handoff request, therefore, need in step S407, indicate to the host base station.
Step S408, the host base station according to MME identification information wherein, sends to corresponding core net (MME) with the path handoff request after receiving the path handoff request.
Step S409, core net knows that UE has switched to new sub-district, to host base station return path Handover Request Acknowledge after receiving the path handoff request.
Step S410, the host base station is to RN forward-path Handover Request Acknowledge.
Through above-mentioned steps, the switching of UE is accomplished, and UE can carry on business in the RN jurisdiction district.
Embodiment three
RN is in normal operating state after inserting the host base station, can service be provided for the subscriber equipment under its covering.UE is positioned at the RN jurisdiction district, is in idle condition.Fig. 5 is a schematic flow sheet of having implemented three access network according to the present invention, and as shown in Figure 5, this flow process comprises:
Step S501, UE initiate in the RN jurisdiction district to insert at random, send RRC connection request (RRC Connection Request) to RN, comprise the identification information of UE in this request and set up cause information (establishment Cause).In the present embodiment, UE's sets up former because urgency traffic (emergency).
Step S502, RN are this UE Resources allocation after receiving connection request, send RRC to this UE and connect foundation (RRC Connection Setup).
Step S503; UE is after receiving RRC connection foundation; Use configuration parameter wherein; Send RRC to RN and connect foundation completion (RRC Connection SetupComplete), wherein comprise Non-Access Stratum (Non Access Stratum is called for short NAS) information, the public land mobile network sign (selected PLMN-Identity) of selection and the MME of registration and identify (registered MME).UE obtains corresponding MME sign (globally unique MME identity is called for short GUMMEI) when being registered to network, need the network of the current access of notice UE so that obtain the information of this UE from the MME of registration.
Step S504, RN are after receiving RRC connection foundation completion, and initiating the professional load information of setting up reason, MME, the MME information of registration etc. according to UE is the suitable MME of UE selection.This moment, RN needed the preferential MME that selects to support urgency traffic, needn't consider the load of this MME, and this is because urgency traffic has the highest priority, can seize the resource of other non-emergent business.RN sends initial user facility information (Initial UE Message) to the host base station, and wherein comprising RN is the MME sign that UE selects.Present embodiment adopts newly-increased cell to represent that RN is the MME that UE selects, and this newly-increased cell comprises group id (MME Group ID), MME sign indicating number (MME Code) and the PLMN sign of MME.If do not exist the PLMN under the MME that network is shared or RN selects consistent with the PLMN sign that UE initiates professional place, newly-increased cell can not comprise the PLMN sign.
Step S505, the host base station is the MME identification information that UE selects according to the RN that wherein comprises after receiving the initial user facility information, and the initial user facility information is sent to corresponding MME.The host base station need be the MME sign that UE selects for this UE preserves RN, so that can the up S1 signaling of this UE be sent to correct MME exactly in the up signaling transmission afterwards.
Core net (MME) is after receiving the initial user facility information; This UE is carried out authentication; Send the contextual information of this UE to RN through the host base station; The QoS parameter of the E-RAB that sets up comprising needs etc., the data access bearer that RN is used for transfer of data for this UE sets up (Data Radio Bearer, abbreviation DRB).Through said method, UE can carry out transfer of data, commences business.
Corresponding to said method embodiment, the embodiment of the invention also provides a kind of via node.
Fig. 6 is the structured flowchart according to the via node of the embodiment of the invention, and is as shown in Figure 6, and this via node comprises: select module 62, be used for when subscriber equipment initially inserts the via node jurisdiction district, for subscriber equipment is selected MME; Sending module 64 is coupled to and selects module 62, is used for sending to the host base station sign of the MME that selects.
In concrete implementation procedure, sending module 64 can pass through S1 interface signaling, RRC signaling or X2 signaling are sent sign from the MME that selects to the host base station.Wherein, the S1 interface signaling can comprise: initial user facility information or path handoff request signaling.
Preferably, select module 62 to be one of at least subscriber equipment selection MME: the MME information the when load information of setting up reason, MME of user equipment start service, user equipment registration, the ability information of MME according to following information.
Fig. 7 is the structured flowchart of the selection module 62 of via node according to the preferred embodiment of the invention; As shown in Figure 7; Select module 62 to comprise: receive submodule 72, be used for initiating the radio resource control RRC connection procedure in the via node jurisdiction district at subscriber equipment, reception is set up from the RRC connection of subscriber equipment and is accomplished signaling; Perhaps switch to from adjacent base station the process of via node jurisdiction district, receive from the switching of subscriber equipment and accomplish signaling at subscriber equipment; Chooser module 74 is coupled to and receives submodule 72, is used for when reception submodule 72 receives RRC connection foundation completion signaling or switches the completion signaling, and be subscriber equipment selection MME.
Preferably, the group id that is designated MME of MME and MME sign indicating number perhaps are group id, MME sign indicating number and the PLMN sign of MME.
In sum, it is the mode that UE selects MME that the present invention adopts RN, has reduced the complexity that DeNB handles, and simultaneously, via node can be known the MME that selects for the user, thereby the switching type that via node can be selected to be fit to switches.
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 (12)
1. the system of selection of a Mobility Management Entity is characterized in that, comprising:
When subscriber equipment initially inserted the via node jurisdiction district, said via node was that said subscriber equipment is selected Mobility Management Entity;
Said via node sends the sign of the said Mobility Management Entity of selecting to the host base station.
2. method according to claim 1 is characterized in that, the sign that said via node sends the said Mobility Management Entity of selecting to the host base station comprises:
Said via node sends the sign of the said Mobility Management Entity of selecting to the host base station through S1 interface signaling, RRC signaling or X2 signaling.
3. method according to claim 2 is characterized in that, said S1 interface signaling comprises:
Initial user facility information or path handoff request signaling.
4. method according to claim 1 is characterized in that, said via node is that said subscriber equipment selects Mobility Management Entity to comprise:
Said via node one of is at least selected Mobility Management Entity for said subscriber equipment according to following information: the Mobility Management Entity information the when load information of setting up reason, Mobility Management Entity of said user equipment start service, said user equipment registration, the ability information of Mobility Management Entity.
5. method according to claim 1 is characterized in that, said via node is that said subscriber equipment selects Mobility Management Entity to comprise:
Said subscriber equipment is initiated in the radio resource control RRC connection procedure in said via node jurisdiction district; When said via node received from the RRC connection foundation completion signaling of said subscriber equipment, said via node was that said subscriber equipment is selected Mobility Management Entity; Perhaps
Said subscriber equipment switches to the process of said via node jurisdiction district from adjacent base station, and when said via node received from the switching completion signaling of said subscriber equipment, said via node was that said subscriber equipment is selected Mobility Management Entity.
6. according to each described method in the claim 1 to 5; It is characterized in that; The group id that is designated said Mobility Management Entity of said Mobility Management Entity and Mobility Management Entity sign indicating number perhaps are group id, Mobility Management Entity sign indicating number and the public land mobile network PLMN sign of said Mobility Management Entity.
7. a via node is characterized in that, comprising:
Select module, be used for when subscriber equipment initially inserts the via node jurisdiction district, for said subscriber equipment is selected Mobility Management Entity;
Sending module is used for the sign to the said Mobility Management Entity of host base station transmission selection.
8. via node according to claim 7 is characterized in that, said sending module sends the sign of the said Mobility Management Entity of selecting to the host base station through S1 interface signaling, RRC signaling or X2 signaling.
9. via node according to claim 8 is characterized in that, said S1 interface signaling comprises:
Initial user facility information or path handoff request signaling.
10. via node according to claim 7 is characterized in that, said selection module one of at least is that said subscriber equipment is selected Mobility Management Entity according to following information:
Mobility Management Entity information when the load information of setting up reason, Mobility Management Entity of said user equipment start service, said user equipment registration, the ability information of Mobility Management Entity.
11. via node according to claim 7 is characterized in that, said selection module comprises:
Receive submodule; Be used for initiating the radio resource control RRC connection procedure in said via node jurisdiction district at said subscriber equipment; Reception connects foundation completion signaling from the RRC of said subscriber equipment; Perhaps switch to from adjacent base station the process of said via node jurisdiction district, receive from the switching of said subscriber equipment and accomplish signaling at said subscriber equipment;
The chooser module is used for when said reception submodule receives said RRC connection foundation completion signaling or said switching completion signaling, is that said subscriber equipment is selected Mobility Management Entity.
12. according to each described via node in the claim 7 to 11; It is characterized in that; The group id that is designated said Mobility Management Entity of said Mobility Management Entity and Mobility Management Entity sign indicating number perhaps are group id, Mobility Management Entity sign indicating number and the public land mobile network PLMN sign of said Mobility Management Entity.
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| CN106612528A (en) * | 2015-10-26 | 2017-05-03 | 展讯通信（上海）有限公司 | Base station and method thereof for selecting MME |
| CN106714267A (en) * | 2015-11-13 | 2017-05-24 | 上海贝尔股份有限公司 | Method and device for realizing relay access to network end from remote user end |
| WO2018036304A1 (en) * | 2016-08-22 | 2018-03-01 | 华为技术有限公司 | Indirect communication method, relay node, network equipment, and system |
| CN109906596A (en) * | 2016-11-03 | 2019-06-18 | IPCom两合公司 | The message exchange of wearable device |
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| CN111542101A (en) * | 2014-10-17 | 2020-08-14 | 高通股份有限公司 | Selection of serving node in wireless communication system |
| CN111542101B (en) * | 2014-10-17 | 2022-04-15 | 高通股份有限公司 | Method and apparatus for selection of serving node in wireless communication system |
| CN106612528A (en) * | 2015-10-26 | 2017-05-03 | 展讯通信（上海）有限公司 | Base station and method thereof for selecting MME |
| CN106612528B (en) * | 2015-10-26 | 2019-11-01 | 展讯通信（上海）有限公司 | Base station and its method for choosing MME |
| CN106714267A (en) * | 2015-11-13 | 2017-05-24 | 上海贝尔股份有限公司 | Method and device for realizing relay access to network end from remote user end |
| CN106714267B (en) * | 2015-11-13 | 2020-10-27 | 上海诺基亚贝尔股份有限公司 | Method and device for realizing relay access from remote user side to network side |
| CN107770743A (en) * | 2016-08-22 | 2018-03-06 | 华为技术有限公司 | Indirect communication method, via node, the network equipment and system |
| CN107770743B (en) * | 2016-08-22 | 2019-11-05 | 华为技术有限公司 | Indirect communication method, relay node, the network equipment and system |
| WO2018036304A1 (en) * | 2016-08-22 | 2018-03-01 | 华为技术有限公司 | Indirect communication method, relay node, network equipment, and system |
| CN109906596A (en) * | 2016-11-03 | 2019-06-18 | IPCom两合公司 | The message exchange of wearable device |
| CN109906596B (en) * | 2016-11-03 | 2023-01-10 | IPCom两合公司 | Message exchange for wearable devices |
| CN111052793A (en) * | 2017-11-15 | 2020-04-21 | Oppo广东移动通信有限公司 | Method and device for mobility management |
| CN111052793B (en) * | 2017-11-15 | 2021-12-28 | Oppo广东移动通信有限公司 | Method and device for mobility management |
| CN112566094A (en) * | 2020-12-04 | 2021-03-26 | 展讯通信（上海）有限公司 | Terminal device, random access method thereof, and computer-readable storage medium |
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