CN101287294A - Transfer method and system for mobility management entity and terminal - Google Patents
Transfer method and system for mobility management entity and terminal Download PDFInfo
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- CN101287294A CN101287294A CNA2008101004413A CN200810100441A CN101287294A CN 101287294 A CN101287294 A CN 101287294A CN A2008101004413 A CNA2008101004413 A CN A2008101004413A CN 200810100441 A CN200810100441 A CN 200810100441A CN 101287294 A CN101287294 A CN 101287294A
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Abstract
The invention discloses a terminal transfer method. The method of the invention comprises the steps that: a mobile management entity monitors the time of a terminal staying in a home base station which belongs to a current internal subscriber group; when the time of the terminal staying in the home base station exceeds the preset time threshold, if the terminal and the home base station are in a connection state, the mobile management entity sends a request of switching to the home base station which is connected with the terminal to request the terminal to be switched to a target base station and carries the identifier of the terminal in the request of switching. The invention also discloses a mobile transfer system and the mobile management entity. By adopting the invention, the terminal in the current CSG is transferred to a base station which does not belong to the current CSG, thus resulting in that the normal operation of subscriber services can be guaranteed; the perception and the experience of subscribers can be improved for benefiting operators to maintain customers.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method and system of a kind of mobile management entity, terminal transfer.
Background technology
In order to keep the competitiveness of 3-G (Generation Three mobile communication system) in the communications field, and in order to be that the user provides that speed is faster, time delay is lower, personalized more mobile communication service with lower operation cost, third generation partner program (3rd Generation PartnershipProject, abbreviating 3GPP as) the standard operation group just is being devoted to the research of evolution system (EvolvedPacket System abbreviates EPS as).
Fig. 1 is the structure-steel framing composition of EPS system, the EPS system is divided into evolution wireless network (Evolved Universal Terrestrial Radio Access Network, abbreviate E-UTRAN as) and evolvement network (Evolved Packet Core, abbreviate EPC as) two parts, wherein, EPC is also referred to as System Architecture Evolution (System Architecture Evolution abbreviates SAE as), as shown in Figure 1, the EPS system comprises following network element:
Wherein, EPC comprises following network element:
Home subscriber data server (Home Subscriber Server abbreviates HSS as): being positioned at the home network that the user contracts, is to preserve forever depositing a little of user contracting data information;
Mobile management entity (Mobility Management Entity, abbreviate MME as): be used to preserve the subscription data of user in current network, be responsible for the signaling management of the Non-Access Stratum (Non-Access Stratum abbreviates NAS as) of terminal to network, tracking, paging and the bearer management under user's idle pulley; Wherein, the NAS signaling is positioned on the wireless network, be terminal to the high-level signaling between the MME, the mobile management and the session management of main processing terminal when only existing the NAS signaling to connect, just can transmit the NAS signaling between terminal and MME;
Gateway (Serving Gateway, abbreviate S-GW as): be the gateway that core net arrives wireless system, be responsible for the user plane bearer of terminal to core net, the metadata cache under the terminal idle pulley, network side is initiated service request, legal eavesdropping, grouped data route and forwarding;
Grouped data network gateway (PDN Gateway abbreviates P-GW as): be the gateway of EPS system and this system's external network, the IP address assignment of responsible terminal, charging, grouping packet filtering, application of policies etc.;
E-UTRAN comprises base station (E-UTRAN NodeB abbreviates eNB as), and E-UTRAN is responsible for the transmitting-receiving of wireless signal by air interface and terminal contact;
Carrying is the data channel in the EPS system, is used to transmit the data of terminal and packet data network.
The state of terminal in the EPS system is divided into two kinds: EPS mobility management states and EPS Connection Management state.Wherein, the EPS mobility management states is used for monitoring terminal in the network side information relevant with mobile management, and this state is divided into " registration " and " non-registered ", wherein, " registration " state shows that terminal registers in EPS, network side has the contextual information and the positional information of this terminal; " non-registered " state shows that terminal do not register in EPS, network side is the contextual information and the positional information of this terminal not.The signaling that the EPS Connection Management state is used between monitor terminal and the MME connects situation, this state is divided into " free time " and " connection ", wherein " free time " state shows does not have the NAS signaling to connect between terminal and the MME, can not transmit the NAS signaling, and this moment, terminal did not have business in network; " connection " state shows has the NAS signaling to connect between terminal and the MME, can transmit the NAS signaling.
The sub-district is less overlay area in the mobile communications network, a general coverage that the sub-district is a base station, and owing to the reason of radio characteristics, each sub-district can not cover very big zone, in order to improve the performance of route, a plurality of neighbor cells can be combined and form a big tracking area (Tracking Area, abbreviate TA as), the tracking area information at place, sub-district is issued by base station (eNB) in the Cell Broadcast CB of terminal and is brought terminal, each sub-district can regularly send broadcast system information to the zone of its covering, comprise in this broadcast system information that the TA under it encodes, the internal user group id can be linked into evolvement network by the community user terminal.Urgent call is the special service that operator provides, and when terminal was initiated urgent call, even this terminal present located sub-district has forbidden that this terminal inserts, terminal was also wanted to insert this sub-district, carries out urgent call.
Home eNodeB (Home eNB, abbreviate HNB as) be a kind of of eNB, it is the dedicated resources of private user, be deployed in family, group, private site such as company or school, Home eNodeB owns for a few peoples, management for convenience, characteristics according to group, the owner of some Home eNodeB forms basic user's group, be called internal user group (ClosedSubscriber Group abbreviates CSG as), the CSG administrative area can be the sub-district below the one family base station, also can be all sub-districts below a plurality of Home eNodeB, the CSG affiliated area includes only the owner's of CSG user's group the sub-district of Home eNodeB.
For each CSG, at public land mobile net network (Public Land MobileNetwork, abbreviate PLMN as) in all have unique sign that it is identified, this is designated CSG sign (CSG Identity, abbreviate CSG ID as), the CSG sign of all sub-districts that CSG user's group is had all is the same.
And the CSG region within the jurisdiction only allows to insert through the user who authorizes, and such user has two classes: CSG user's basic element (being the owner of Home eNodeB) and interim member's (being the guest), CSG only administers the Home eNodeB that belongs to basic element.
CSG user may register to a plurality of CSG user's groups, CSG user need know its current network that is registered to like this, base station under which CSG has authorized this CSG user to insert, like this, EPC is inside user group list of terminal distribution (allowed CSG list of CSG user, abbreviate the CSG tabulation as), the CSG affiliated area of CSG sign representative all allows this CSG user's terminal to insert in this tabulation.If do not have certain CSG ID in the CSG of the terminal tabulation, it just can not insert in all Home eNodeB of this CSG and go.So just can control non-CSG user effectively CSG user is organized the visit of dedicated resources-Home eNodeB, ensure that CSG user organizes the safety of resource, prevent that dedicated resources from being used by non-CSG user.
The owner of certain Home eNodeB (perhaps being called the CSG manager), the authority that may distribute a guest (Guest) for his certain CSG user, for these users, CSG owner or operator dispose a timer as required, called after CSG timer.If the CSG manager has been this terminal distribution timer, and length of timer is set, and (this duration may reach a few hours, also may reach a couple of days) be used for the time that monitor terminal stops in CSG the inside, when then terminal enters CSG, this timer just starts timing, if terminal was left current CSG before timer expiry, timer just makes zero again; If the time of staying of terminal has surpassed length of timer, this moment timer expiry, this terminal just can not continue to insert all interior sub-districts of current CSG.This timer is the resource that takies CSG for the guest user that prevents CSG for a long time, allows CSG owner limit the time of the use Home eNodeB of CSG guest user.
Terminal in the CSG sub-district can be an idle condition, can be connection status also, and when being in idle condition, this terminal does not have business in network, and when being in connection status, terminal has business in network.For the terminal that is in connection status, it has business to carry out, if timer expiry, evolution system can directly cut away the connection of this terminal to network, will reduce user's perceptibility and experience so greatly, is unfavorable for the customer care of operator.
Summary of the invention
Consider that the evolution system that exists in the correlation technique is under the situation of timer expiry, the network that is in the terminal of connection status in the internal user group is connected the problem of directly cutting off and proposes the present invention, for this reason, main purpose of the present invention is to provide a kind of mobile management entity, terminal transfer method and system, to address the above problem.
According to an aspect of the present invention, provide a kind of terminal transfer method.
The method that shifts according to the terminal of the embodiment of the invention comprises: mobile management entity monitor terminal resident time in the Home eNodeB that belongs to current internal user group; Surpass the scheduled time during threshold value when terminal resident time in Home eNodeB, if terminal and Home eNodeB are in connection status, then mobile management entity sends handoff request to the Home eNodeB that is connected with terminal, request switches to target BS with terminal, and in handoff request the sign of carried terminal.
Further, this method also comprises: set in advance scheduled time threshold value.
Preferably, the Home eNodeB that mobile management entity connects to terminal sends handoff request and also comprises: mobile management entity carries the switch reasons sign in handoff request, and the switch reasons sign is used for indicating terminal and does not allow to transfer to the Home eNodeB that belongs to current internal user group.
Further, this method also comprises: the sign of the current internal user group in the inside user group list of deletion terminal.
Wherein, being operating as of the sign of the current internal user group in the inside user group list of deletion terminal is one of following: mobile management entity sends the Non-Access Stratum signaling to terminal, the sign of the current internal user group in the inside user group list of deletion terminal; The Home eNodeB that is connected with terminal sends radio open information to terminal, the sign of the current internal user group in the inside user group list of deletion terminal.
Preferably, said method further comprises: base station from home receives handoff request, according to the sign of terminal terminal is switched to target BS.
Wherein, target BS is Home eNodeB or non-attribution the base station in the switching restriction tabulation of terminal in of non-attribution in current internal user group.
Preferably, handoff request comprises one of following: handoff trigger message, System Architecture Evolution carrying release command are that SAE carrying release command, the request of System Architecture Evolution bearing modification are the context release command of the request of SAE bearing modification, terminal.
Wherein, surpass the scheduled time during threshold value when terminal resident time in Home eNodeB, if terminal is in idle condition, then said method also comprises: the current internal user group id in the inside user group list of deletion terminal.
According to a further aspect in the invention, provide a kind of terminal transfer system.
The system that shifts of terminal comprises according to an embodiment of the invention: monitoring module is used for the state of monitor terminal; The handoff request module, being used for the time resident in terminal is belonging to the Home eNodeB of current internal user group surpasses the scheduled time during threshold value, if terminal and Home eNodeB are in connection status, then send handoff request to the Home eNodeB that is connected with terminal, and in handoff request the sign of carried terminal.Wherein, the handoff request module is used to ask terminal is switched to the Home eNodeB of non-attribution in current internal user group; Perhaps ask terminal is switched to the base station of non-attribution in the switching restriction tabulation of terminal.
Further, this system also comprises: handover module, be positioned at Home eNodeB, and be used to receive handoff request, and terminal switched to target BS according to the sign of terminal.
According to a further aspect in the invention, provide a kind of mobile management entity.
According to the mobile management entity of the embodiment of the invention, this mobile management entity is used for monitor terminal resident time in the Home eNodeB that belongs to current internal user group; Surpass the scheduled time during threshold value when terminal resident time in Home eNodeB, if terminal and Home eNodeB are in connection status, then the Home eNodeB that connects to terminal sends handoff request, and in handoff request the sign of carried terminal, request switches to the Home eNodeB of non-attribution in current internal user group with terminal; Perhaps terminal is switched to the base station of non-attribution in the switching restriction tabulation of terminal.
By above-mentioned at least one technical scheme of the present invention, can with the terminal transfer among the current C SG to non-attribution in the base station of current C SG, guaranteed normally carrying out of customer service, improved user's perceptibility and experience.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structure-steel framing composition according to the evolution system of correlation technique;
Fig. 2 is the flow chart according to the terminal transfer method of the inventive method embodiment;
Fig. 3 is the detailed process flow chart according to the terminal transfer method of the inventive method embodiment;
Fig. 4 is the flow chart according to the handover trigger flow process terminal transfer method of the inventive method embodiment;
Fig. 5 is the flow chart that discharges flow process terminal transfer method according to the SAE carrying of the inventive method embodiment;
Fig. 6 is the flow chart according to the SAE bearing modification flow process terminal transfer method of the inventive method embodiment;
Fig. 7 is the flow chart that discharges flow process terminal transfer method according to the terminal context of the inventive method embodiment;
Fig. 8 is the flow chart according to the transfer idle condition terminal method of the inventive method embodiment;
Fig. 9 is the structured flowchart of the terminal transfer system of system according to the invention embodiment.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing.
Internal user group (CSG) sub-district is the sub-district of Home eNodeB, because its coverage is little, therefore also be known as microcellulor (also claiming Pico cell), corresponding with it is macro cells, that is, the sub-district that macro base station covers, CSG sub-district are generally done focus and are covered in the macro cells geographic range, absorb traffic, for the user provides exclusive service.Under the situation that network condition allows, with the terminal transfer among the current C SG to non-attribution in the base station of current C SG, no matter for the user still for operator, all be scheme preferably.Based on this, basic thought of the present invention is: when timer expiry, the Home eNodeB that the evolution system notice is connected with terminal switches to this terminal on other base stations, and switch reasons sent to this Home eNodeB, so just can avoid Home eNodeB this terminal to be switched on the base station that belongs to current C SG; Simultaneously, for the terminal that is in idle condition, also need in the CSG timer expiry, notify this terminal to select non-attribution in the base station of current C SG.
Method embodiment
According to the embodiment of the invention, the method that provides a kind of terminal to shift.Fig. 2 is the flow chart according to the terminal transfer method of the embodiment of the invention, and as shown in Figure 2, this method may further comprise the steps:
Step S202, MME monitor terminal resident time in the Home eNodeB that belongs to current C SG;
Step S204, surpass scheduled time threshold value (at this moment when terminal resident time in Home eNodeB, need set in advance scheduled time threshold value) time, if terminal and Home eNodeB are in connection status, then MME sends handoff request to the Home eNodeB that terminal connects, request switches to target BS with terminal, and in handoff request the sign of carried terminal.
Next, Home eNodeB receives handoff request, can terminal be switched to target BS according to the sign of terminal.
The technical scheme that provides by the embodiment of the invention, with the terminal transfer among the current C SG to non-attribution in the base station of current C SG, guaranteed normally carrying out of customer service, improved user's perceptibility and experience.
Here the target BS of mentioning is the non-Home eNodeB that belongs to current C SG; Or the base station of non-attribution in the switching of terminal restriction tabulation, wherein, the switching of terminal restriction tabulation is used for sub-district or the base station that limiting terminal can switch to, and terminal can not switch on the sub-district or base station of switching in the restriction tabulation.For example, MME can carry the switch reasons sign in handoff request, and the switch reasons sign is used for indicating terminal and does not allow to transfer to the Home eNodeB that belongs to current C SG.
Further, behind handover success, can further delete the sign of the current C SG in the CSG tabulation of terminal, can realize in the following way: MME sends the Non-Access Stratum signaling to terminal, the sign of the current C SG in the CSG tabulation of deletion terminal; Perhaps, the Home eNodeB that is connected with terminal sends radio open information to terminal, the sign of the current C SG in the CSG tabulation of deletion terminal.
In addition, in step S204, surpass the scheduled time during threshold value,, then also can delete the current internal user group id in the inside user group list of terminal if terminal is in idle condition when terminal resident time in Home eNodeB.
Preferably, timer can be set in MME, monitor terminal resident time in the Home eNodeB that belongs to current C SG, when timer expiry or the residue scheduled duration (at this moment, need set in advance scheduled duration) time, if terminal is in connection status, then MME sends handoff request to the Home eNodeB that terminal connects, request switches to target BS with terminal, and in handoff request the sign of carried terminal; When timer expiry or residue during scheduled duration,, then delete the current C SG sign in the CSG tabulation of terminal if terminal is in idle condition.
Fig. 3 is that as shown in Figure 3, this method may further comprise the steps according to the detailed process flow chart of the method for the terminal transfer of the inventive method embodiment:
Step S301 is provided with the CSG timer in MME, and this length of timer is set; MME monitors certain location information of terminals under the Home eNodeB that belongs to current C SG in real time, writes down the time of this terminal under certain CSG, when terminal enters current C SG, MME starts timer, when terminal is left current C SG, MME timeing closing device (being about to timer makes zero);
Step S302, under the situation of the CSG of terminal timer expiry, if this terminal also under this CSG, MME prepares this terminal is moved out, and does not allow it continue to insert current C SG;
Step S303, before this terminal transfer is gone out Home eNodeB, MME can check the connection status of this terminal, check whether this terminal has business to carry out, if this terminal is in connection status, represent that this terminal has business to carry out, MME will be under the situation of conditions permit switches to it other base stations, execution in step S306; If this terminal is an idle condition, represent that this terminal does not have business to carry out, can Direct Transfer, execution in step S304;
Step S304, the current C SG sign in the CSG tabulation of deletion terminal, this terminal just can not continue to insert current C SG like this, and when having only in CSG that network adds current C SG to this terminal again tabulates, this terminal could insert the sub-district among the current C SG; Wherein, can identify by the current C SG of following dual mode deletion terminal:
First kind of mode: MME sends the NAS signaling to terminal, deletes the current C SG sign in the CSG tabulation of this terminal;
The second way: the present Home eNodeB that belongs to of terminal sends radio open information to terminal, deletes the current C SG sign in the CSG tabulation of this terminal;
Step S305, terminal is according to its residing geographical location circumstances, carry out the sub-district gravity treatment, be linked in the non-current C SG sub-district, for example, according to configuration, carrier policy or the user's of terminal subscription data, this terminal can insert other CSG sub-districts, can be linked into the sub-district of macrocellular, also can be linked into other WLAN (wireless local area network) sub-districts, and execution in step S308;
Step S306, MME sends handoff request to the Home eNodeB that is connected with this terminal, the sign of carried terminal in this handoff request, the reason of switching, switch to reason and can comprise " CSG does not allow visit ", Home eNodeB is according to the terminal iidentification in this handoff request, know the terminal that needs switching, according to switch reasons, this terminal can be switched on the suitable target BS, other that this terminal can not switched to forbidden CSG the inside are above the Home eNodeB, wherein, target BS can not be the Home eNodeB that belongs to current C SG, can not be the base station in the switching restriction tabulation of this terminal;
Behind target BS, the current C SG in the CSG tabulation of deletion terminal identifies with this terminal successful switch for step S307, Home eNodeB, and the method for deletion current C SG sign is identical with step S304, repeats no more here;
If this terminal does not have successful switch to target BS, delete the current C SG sign in the CSG tabulation of terminal equally, at this moment, after MME can wait for that also this terminal is converted to idle condition from connection status, execution in step S304 was to step S305;
Step S308, this terminal does not allow to continue any sub-district of access belonging in current C SG again, still, if this terminal zone of living in has only under the situation of signal of this CSG, when this terminal was initiated urgent call, the Home eNodeB of this CSG must allow this terminal access to carry out urgent call.
Wherein, the handoff request of using above can be one of following: handoff trigger message, System Architecture Evolution carrying release command are that SAE carrying release command, the request of System Architecture Evolution bearing modification are the context release command of the request of SAE bearing modification, terminal etc.Below will be described in conjunction with the accompanying drawings respectively.
Fig. 4 is that the handover trigger flow process of utilizing according to the embodiment of the invention shifts the flow chart of the terminal of connection status, as shown in Figure 4, comprises following processing:
Step S401, the CSG timer expiry of certain terminal among the MME, and this terminal is connection status, the MME decision allows Home eNodeB initiate switching flow, under conditions permit, this terminal is switched to suitable base station get on;
Step S402, MME sends handoff trigger message, the reason of the sign of carried terminal, switching in this message to the Home eNodeB that is connected with this terminal;
Step S403, Home eNodeB sends the handover trigger acknowledge message to MME, and expression receives this handoff trigger message;
Step S404, Home eNodeB carry out switching flow, and this terminal is switched on the suitable target BS, and target BS can not be the Home eNodeB among the current C SG, can not be base station and sub-district in the switching restriction tabulation of this terminal;
Step S405, the current C SG sign in the CSG tabulation of deletion terminal, this step is identical with step S304, repeats no more here.
This embodiment utilizes the handover trigger flow process to shift the terminal that is in connection status in CSG, has guaranteed normally carrying out of customer service, has improved user's perceptibility and experience.
Fig. 5 is that the SAE carrying of utilizing according to the embodiment of the invention discharges the flow chart that flow process shifts connection status terminals, as shown in Figure 5, comprises following processing:
Step S501, the CSG timer expiry of terminal in MME, and this terminal is connection status, the MME decision allows Home eNodeB initiate switching flow so, and this terminal is switched on the suitable base station;
Step S502, MME sends SAE carrying release command message, the reason of the sign of carried terminal, switching in this message to the residing Home eNodeB of this terminal;
Step S503, Home eNodeB send the SAE carrying to MME and discharge the message that finishes, and prepare the switching flow of initiation to this terminal;
Step S504, Home eNodeB carry out switching flow, and this terminal is switched on the suitable target BS, and wherein, target BS can not be the Home eNodeB among the current C SG, can not be base station and sub-district in the switching restriction tabulation of this terminal;
Step S505, the current C SG sign in the CSG tabulation of deletion terminal, this step is identical with step S304, repeats no more here.
This embodiment utilizes the SAE carrying to discharge flow process and shifts the terminal that is in connection status in CSG, has guaranteed normally carrying out of customer service, has improved user's perceptibility and experience.
Fig. 5 is that the SAE bearing modification flow process of utilizing according to the embodiment of the invention shifts the flow chart of connection status terminals, as shown in Figure 6, comprises following processing:
Step S601, the CSG timer expiry of terminal in MME, and this terminal is connection status, the MME decision allows Home eNodeB initiate switching flow so, and this terminal is switched on the suitable base station;
Step S602, MME sends SAE bearing modification request message to the residing Home eNodeB of this terminal, carry the reason that has reason " current C SG does not allow; need to switch this terminal " or similar indication in the sign of this terminal, the cause value (Cause) in this message in this message, Home eNodeB receives this SAE bearing modification request message, need to determine the terminal of switching, and this terminal no longer is allowed to visit current C SG;
Step S603, Home eNodeB sends SAE bearing modification response message to MME, and prepares the switching flow of initiation to this terminal;
Step S604, Home eNodeB is carried out switching flow, and this terminal is switched on the suitable target BS, wherein, target BS can not be the Home eNodeB among the current C SG, can not be the base station and the sub-district of switching in the restriction tabulation, at this moment, Home eNodeB is finished switching flow;
Step S605, the current C SG sign in the CSG tabulation of deletion terminal, this step is identical with step S304, repeats no more here.
This embodiment utilizes SAE bearing modification flow process to shift the terminal that is in connection status in CSG, has guaranteed normally carrying out of customer service, has improved user's perceptibility and experience.
Fig. 7 is that the terminal context that utilizes according to the embodiment of the invention discharges the flow chart that flow process shifts the terminal of connection status, as shown in Figure 7, comprises following processing:
Step S701, the CSG timer expiry of certain terminal among the MME, and this terminal is connection status, the MME decision allows Home eNodeB initiate switching flow, under conditions permit, this terminal is switched to suitable base station get on;
Step S702, MME sends terminal context release command message, the reason of the sign of carried terminal, switching in this message to the Home eNodeB that is connected with this terminal;
Step S703, Home eNodeB send the terminal context to MME and discharge the message that finishes, and prepare the switching flow of initiation to this terminal;
Step S704, Home eNodeB carry out switching flow, and this terminal is switched on the suitable target BS, and target BS can not be the Home eNodeB among the current C SG, can not be base station and sub-district in the switching restriction tabulation of this terminal;
Step S705, the current C SG sign in the CSG tabulation of deletion terminal, this step is identical with step S304, repeats no more here.
This embodiment utilizes the terminal context to discharge flow process and shifts the terminal that is in connection status in CSG, has guaranteed normally carrying out of customer service, has improved user's perceptibility and experience.
Fig. 8 be according to the embodiment of the invention be in the flow chart of terminal transfer method under the situation of idle condition in terminal, as shown in Figure 8, may further comprise the steps:
Step S801, MME monitor the CSG timer expiry of terminal, and this terminal is idle condition, the current C SG sign in this terminal of MME decision deletion in the CSG tabulation;
Step S802, this terminal of MME paging makes it enter the service request flow process, and terminal is set up with after the signaling of MME is connected, the current C SG sign in the CSG tabulation of deletion terminal, the method for deletion current C SG sign is identical with step S304, repeats no more here;
Step S803, terminal disconnects with current Home eNodeB and being connected;
Step S804, according to cell selecting criterion and present case, terminal selects the suitable cell of non-current C SG to insert, and carries out responding process as required.
System embodiment
Fig. 9 shows the terminal transfer system schematic diagram according to the embodiment of the invention, and this system comprises:
Further, this system also comprises: the handover module (not shown), be positioned at Home eNodeB, and be used to receive handoff request, and terminal switched to target BS according to the sign of terminal, this module can be connected to handoff request module 20.
The terminal transfer system that provides by the embodiment of the invention, can with the terminal transfer among the current C SG to non-attribution in the base station of current C SG, improved user's perceptibility and experience.
According to the embodiment of the invention, a kind of MME is provided, this MME is used for monitor terminal resident time in the Home eNodeB that belongs to current C SG; Surpass the scheduled time during threshold value when terminal resident time in this Home eNodeB, if terminal and this Home eNodeB are in connection status, then send handoff request to the Home eNodeB that is connected with terminal, request switches to target BS with terminal, and in handoff request the sign of carried terminal.
Above-mentioned target BS is the Home eNodeB of non-attribution in current C SG; Or the base station of non-attribution in the switching restriction tabulation of terminal.
As above, by means of MME provided by the invention, terminal transfer method and/or system, with the terminal transfer among the current C SG to non-attribution in the base station of current C SG, guaranteed normally carrying out of customer service, improve user's perceptibility and experience, helped the customer care of operator.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a terminal transfer method is characterized in that, comprising:
Mobile management entity monitor terminal resident time in the Home eNodeB that belongs to current internal user group;
Surpass the scheduled time during threshold value when described terminal resident time in described Home eNodeB, if described terminal and described Home eNodeB are in connection status, then described mobile management entity sends handoff request to the Home eNodeB that is connected with described terminal, request switches to target BS with described terminal, and carries the sign of described terminal in described handoff request.
2. method according to claim 1 is characterized in that, also comprises: set in advance described scheduled time threshold value.
3. method according to claim 1 is characterized in that, described mobile management entity sends handoff request to the Home eNodeB that is connected with described terminal and also comprises:
Described mobile management entity carries the switch reasons sign in described handoff request, described switch reasons sign is used to indicate described terminal not allow to transfer to the Home eNodeB that belongs to described current internal user group.
4. method according to claim 1 is characterized in that, described method also comprises:
Delete the sign of current internal user group in the inside user group list of described terminal.
5. method according to claim 4 is characterized in that, delete current internal user group in the inside user group list of described terminal sign be operating as one of following:
Described mobile management entity sends the Non-Access Stratum signaling to described terminal, deletes the sign of current internal user group in the inside user group list of described terminal;
The Home eNodeB that is connected with described terminal sends radio open information to described terminal, deletes the sign of current internal user group in the inside user group list of described terminal.
6. according to each described method in the claim 1 to 5, it is characterized in that, further comprise:
Receive described handoff request message, described base station from home switches to described target BS according to the sign of described terminal with described terminal.
7. according to each described method in the claim 1 to 5, it is characterized in that:
Described target BS is Home eNodeB or non-attribution the base station in the switching restriction tabulation of described terminal in of non-attribution in described current internal user group.
8. according to each described method in the claim 1 to 5, it is characterized in that it is one of following that described handoff request comprises: handoff trigger message, System Architecture Evolution carrying release command are that SAE carrying release command, the request of System Architecture Evolution bearing modification are the context release command of the request of SAE bearing modification, described terminal.
9. method according to claim 1 is characterized in that, surpasses the scheduled time during threshold value when described terminal resident time in described Home eNodeB, if described terminal is in idle condition, then described method also comprises:
Delete the current internal user group id in the inside user group list of described terminal.
10. a terminal transfer system is characterized in that, comprising:
Monitoring module is used for the state of monitor terminal;
The handoff request module, being used for the time resident in described terminal is belonging to the Home eNodeB of current internal user group surpasses the scheduled time during threshold value, if described terminal and described Home eNodeB are in connection status, then send handoff request, and in described handoff request, carry the sign of described terminal to described Home eNodeB.
11. system according to claim 10 is characterized in that,
Described handoff request module is used to ask described terminal is switched to the Home eNodeB of non-attribution in described current internal user group; Perhaps ask described terminal is switched to the base station of non-attribution in the switching restriction tabulation of described terminal.
12., it is characterized in that described system also comprises according to claim 10 or 11 described systems:
Handover module is positioned at described Home eNodeB, is used to receive described handoff request, and according to the sign of described terminal described terminal is switched to target BS.
13. a mobile management entity is characterized in that, is used for monitor terminal resident time in the Home eNodeB that belongs to current internal user group; Surpass the scheduled time during threshold value when described terminal resident time in described Home eNodeB, if described terminal and described Home eNodeB are in connection status, then send handoff request to the Home eNodeB that is connected with described terminal, and in described handoff request, carry the sign of described terminal, request switches to the Home eNodeB of non-attribution in described current internal user group with described terminal; Perhaps described terminal is switched to the base station of non-attribution in the switching restriction tabulation of described terminal.
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| CN2008101004413A CN101287294B (en) | 2008-06-11 | 2008-06-11 | Transfer method and system for mobility management entity and terminal |
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| CN2008101004413A CN101287294B (en) | 2008-06-11 | 2008-06-11 | Transfer method and system for mobility management entity and terminal |
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| CN101287294B CN101287294B (en) | 2012-07-04 |
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| CN2008101004413A Expired - Fee Related CN101287294B (en) | 2008-06-11 | 2008-06-11 | Transfer method and system for mobility management entity and terminal |
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