CN107295543A - A kind of motion management method, UE, base station and mobility management entity - Google Patents

A kind of motion management method, UE, base station and mobility management entity Download PDF

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Publication number
CN107295543A
CN107295543A CN201610203429.XA CN201610203429A CN107295543A CN 107295543 A CN107295543 A CN 107295543A CN 201610203429 A CN201610203429 A CN 201610203429A CN 107295543 A CN107295543 A CN 107295543A
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China
Prior art keywords
community
base station
group information
cell
groups
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CN201610203429.XA
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CN107295543B (en
Inventor
李心宇
许芳丽
陈瑞卡
梁靖
全海洋
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Abstract

The invention provides a kind of motion management method, UE, base station and mobility management entity.The present invention is managed the moving property of UE of light connected state based on small district's groups, it is possible to reduce the signaling consumption in mobility management process.

Description

A kind of motion management method, UE, base station and mobility management entity
Technical field
The present invention relates to the mobile management technical field in radio communication, and in particular to one kind is based on small district's groups Motion management method, UE, base station and mobility management entity.
Background technology
With smart mobile phone in LTE (Long Term Evolution, Long Term Evolution) system and other are logical Believe the extensive growth of number of devices, its big load signaling consumption brought has become limitation LTE nets The key factor that network power system capacity and user data experience further develop.Wherein largely and frequently RRC (Radio Resource Control, wireless heterogeneous networks) connections are set up and beep-page message transmission is to make Into the first cause of larger control signaling load.So the conceptual phases of Release 14 in LTE are introduced gently (Light Connection) technology of connection, the RRC connections to optimize LTE system are set up and managed Journey, mobility management process and paging, to realize the purpose for mitigating system control signaling load.
It is that UE introduces one in RRC connected states and RRC in Light Connection technologies " centre " state between Idle state, referred to as light connected state (light connected state).When being in RRC connections The UE of state is after data transfer is completed, and network side can indicate that it enters light connected state by dedicated signaling, Fig. 1 gives the state transition diagram between above-mentioned three state.For light connected state, UE context will UE sides and network side are stored in respectively.Hereafter, can when UE needs to carry out business datum transmission To return to RRC connected states by the UE contexts preserved before with less Signalling exchange, it is to avoid Due in traditional LTE system UE when carrying out data transmission, it is necessary to frequently initiate Initial R RC connections, And the serious control signaling load triggered.
In the mobile management of current LTE system：1) for being in the UE of RRC connected states, due to adopting With the mobility management mechanism for there are network controls, UE, source eNodeB and mesh are needed in handoff procedure Substantial amounts of control signaling interaction is carried out between mark eNodeB.2) under RRC Idle state, UE independently enters Row cell is selected and gravity treatment.For UE position, MME can know it is located at which TA (tracking area) Area, but do not know which cell UE is particularly located at.So when MME (mobility management entity) to certain , it is necessary to beep-page message is sent to all under corresponding TA areas when the UE of individual RRC Idle state initiates paging ENode (base station), is present than larger S1 interface signalings expense.
As can be seen that in existing LTE system signaling consumption, the control signaling for mobile management is accounted for There is very big proportion.Therefore, a kind of mobility pipe for the signaling consumption that can effectively reduce mobile management is needed badly Reason scheme.
The content of the invention
The technical problem to be solved of the embodiment of the present invention is to provide a kind of motion management method, UE, base station And mobility management entity, the signaling consumption to reduce mobile management.
In order to solve the above technical problems, motion management method provided in an embodiment of the present invention, including：
UE is received belonging to the first community that UE is currently resident after light connected state is entered by RRC connected states The first community group notification message that sends of first base station, the first community group notification message carries first First community group information belonging to cell, wherein, each small district's groups include multiple cells for being pre-configured with And the plurality of cell each belonging to base station；
The UE according to the first community group information carried in the first community group notification message, Cell group information where UE described in local maintenance.
It is preferred that, above-mentioned motion management method, in addition to：
The UE by the RRC connected states after light connected state is entered, UE is local and the UE The context of the UE is currently preserved at the first base station belonging to resident first community.
It is preferred that, above-mentioned motion management method is described to be taken according in the first community group notification message The first community group information of band, includes the step of the cell group information where UE described in local maintenance：
It is small according to described first in the cell group information where the UE locally not yet records the UE District's groups information, the cell group information where the UE is locally recorded, and to the mobile management of network side Entity sends the cell group information where the UE；
In the cell group information where UE local records have the UE, the first community is judged Whether group information is consistent with the cell group information where the UE of local record, and when inconsistent, According to the first community group information, the cell group information where the UE of renewal local record, and to The mobility management entity of network side sends the cell group information where the UE.
It is preferred that, in above-mentioned motion management method, as the UE in light connected state, judge to need When changing currently resident cell, the motion management method also includes：
The UE in light connected state, by cell selection/reselection process, be determined as cell selection/ The second community of the Target cell of gravity treatment, and the UE cells being currently resident are changed to second community.
It is preferred that, in above-mentioned motion management method, it is changed to by the UE cells being currently resident After the step of second community, the motion management method also includes：
The second community group notification message that the second base station belonging to second community is sent is received, the small district's groups are led to Know that message carries the second community group information belonging to second community；
According to the second community group information carried in the second community group notification message, the UE institutes are safeguarded Cell group information, wherein, the UE institutes locally recorded in the second community group information and UE Cell group information it is inconsistent when, according to the second community group information, update the described of local record Cell group information where UE, and it is small where sending the UE to the mobility management entity of network side District's groups information.
It is preferred that, in above-mentioned motion management method, need to send in the UE in light connected state During upstream data, the motion management method also includes：
The 3rd base station belonging to the UE to the 3rd currently resident UE cell sends RRC connections Recovery request；Wherein, if the 3rd base station according to the RRC connection recovery requests from RRC connections pair When the context of the UE is obtained at the source base station answered, the UE is based on respective with the 3rd base station UE contexts, recover RRC connections between the two；
The UE transmits upstream data after RRC connections recovery based on the RRC connections.
It is preferred that, in above-mentioned motion management method, if RRC connections recovery process fails, institute State UE and process, NAS recovery processs or RRC connection reconstruction processes set up by Initial R RC connections, The RRC connections set up between the 3rd base station.
It is preferred that, in above-mentioned motion management method, the UE receives network side according to the UE institutes Small district's groups information small district's groups where the UE all cells initiate beep-page message；
The UE responds the beep-page message, the communication link set up between network side.
It is preferred that, in above-mentioned motion management method, the UE in light connected state, further from In pre-defined dedicated signaling, the first community group notification message that the first base station is sent is received.
The embodiment of the present invention additionally provides another motion management method based on small district's groups, including：
First base station belonging to first community, determines the first community group information belonging to the first community；
First base station sends the first community group notification message for carrying the first community group information, so as to stay The first community and any UE in light connected state are stayed in, according to the first community group information, The cell group information where any UE is safeguarded, wherein, each small district's groups include be pre-configured with many Individual cell and the plurality of cell each belonging to base station.
It is preferred that, in above-mentioned motion management method, in addition to：
First base station is finding to reside in the UE of first community after RRC connected states enter light connected state, First base station is locally preserving the context of the UE.
It is preferred that, in above-mentioned motion management method, in addition to：
First base station reception resides in the first community and is in the first UE transmissions of light connected state RRC connection recovery requests；
First base station obtains the UE contexts of the first UE according to the RRC connections recovery request, And after the UE contexts of the first UE are successfully obtained, above and below the UE based on the first UE Text, recovers the RRC connections between the first UE.
It is preferred that, in above-mentioned motion management method, the first base station is extensive according to the RRC connections The step of multiple request, UE contexts for obtaining the first UE, includes：
First base station determines the corresponding source of RRC connections to be restored according to the RRC connections recovery request Base station, obtains the UE contexts of the first UE at the source base station.
It is preferred that, in above-mentioned motion management method, in addition to：
Process, NAS recovery processs or RRC are set up in the Initial R RC connections for responding the first UE initiations Connection reconstruction process, the RRC connections set up between the first UE.
It is preferred that, in above-mentioned motion management method, in addition to：
First base station receives the request message for the UE contexts for the 2nd UE that the second base station is sent；
First base is when locally preserving the 2nd UE UE contexts, by the UE of the 2nd UE Hereafter it is sent to second base station.
It is preferred that, in above-mentioned motion management method, in addition to：
First base station sends the first community group notification message further by pre-defined dedicated signaling.
The embodiment of the present invention additionally provides another motion management method based on small district's groups, including：
The mobility management entity of network side, receives the notice sent from the first UE in light connected state The first community group information where the first UE is carried in message, the notification message, wherein, often Individual small district's groups include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；
The mobility management entity is according to the notification message, where the first UE described in local maintenance The information of small district's groups；
The mobility management entity is small according to where the first UE when needing one UE of paging The information of district's groups, sends for the first UE's in each cell of the small district's groups where the first UE Beep-page message.
It is preferred that, in above-mentioned motion management method, the mobility management entity disappears according to the notice Breath, includes the step of the information of the small district's groups where the first UE described in local maintenance：
The mobility management entity in the cell group information where not yet recording the first UE, according to The first community group information, records the cell group information where the UE, and to the mobility of network side Management entity sends the cell group information where the UE；
The mobility management entity judges in the cell group information where having recorded the first UE Whether the first community group information is consistent with the cell group information where the UE of current record, and When inconsistent, according to the first community group information, the cell group information where the UE is updated.
The embodiment of the present invention additionally provides a kind of UE, including：
First receiving unit, for after light connected state is entered by RRC connected states, receiving this in this UE The first community group notification message that first base station belonging to the first community that UE is currently resident is sent, described the One small district's groups notification message carries the first community group information belonging to first community, wherein, each small district's groups Include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；
Cell group maintenance unit, for small according to carried in the first community group notification message described first District's groups information, safeguards the cell group information where this UE.
It is preferred that, in above-mentioned UE, in addition to：
Context maintenance unit, for this UE by the RRC connected states enter light connected state after, The UE is preserved at first base station at this UE and belonging to first community that the UE is currently resident Context.
It is preferred that, in above-mentioned UE, the cell group maintenance unit, specifically for：
It is small according to described first in the cell group information where the UE locally not yet records the UE District's groups information, the cell group information where the UE is locally recorded, and to the mobile management of network side Entity sends the cell group information where the UE；
In the cell group information where UE local records have the UE, the first community is judged Whether group information is consistent with the cell group information where the UE of local record, and when inconsistent, According to the first community group information, the cell group information where the UE of renewal local record, and to The mobility management entity of network side sends the cell group information where the UE.
It is preferred that, in above-mentioned UE, in addition to：
Cell selection/reselection unit, for when this UE is in light connected state, if judging to need to change this During the cell that UE is currently resident, by cell selection/reselection process, cell selection/reselection is determined as The second community of Target cell, and the UE cells being currently resident are changed to second community.
It is preferred that, in above-mentioned UE, in addition to：
Second receiving unit, for being changed in the described UE cells being currently resident after second community, The second community group notification message that the second base station belonging to second community is sent is received, the small district's groups notify to disappear Breath carries the second community group information belonging to second community；
The cell group maintenance unit, is additionally operable to according to second carried in the second community group notification message Cell group information, safeguards the cell group information where the UE, wherein, in the second community group information When cell group information where the UE locally recorded with UE is inconsistent, according to the second community group Information, updates the cell group information where the UE of local record, and to the mobile management of network side Entity sends the cell group information where the UE.
It is preferred that, in above-mentioned UE, in addition to：
RRC connection recovery units, for being in light connected state in this UE, and when needing to send upstream data, The 3rd base station belonging to the 3rd currently resident UE cell sends RRC connection recovery requests；Wherein, If the 3rd base station obtains institute according to the RRC connection recovery requests from the corresponding source base station of RRC connections When stating UE context, then respective UE contexts are based on the 3rd base station, recover the UE RRC between the 3rd base station is connected；
Transmitting element, for after RRC connections recovery, based on the upper line number of RRC connections transmission According to.
It is preferred that, in above-mentioned UE, in addition to：
RRC connection establishment units, for recovering in the RRC connections of the RRC connections recovery unit When journey fails, process, NAS recovery processs or RRC connection reconstructions are set up by Initial R RC connections Process, the RRC connections set up between the 3rd base station.
It is preferred that, in above-mentioned UE, in addition to：
Page response unit, for receiving the information of small district's groups of the network side according to where the UE described The beep-page message that all cells of small district's groups where UE are initiated, and the beep-page message is responded, set up and net Communication link between network side.
It is preferred that, in above-mentioned UE, first receiving unit, specifically for from pre-defined special In signaling, the first community group notification message that the first base station is sent is received.
The embodiment of the present invention additionally provides a kind of first base station, including：
Determining unit, for determining the first community group information belonging to first community, wherein, described first is small Area is the cell of first base station, and each small district's groups include the multiple cells and the plurality of cell being pre-configured with Base station belonging to each；
Transmitting element, the first community group notification message of the first community group information is carried for sending, So as to the first community and any UE in light connected state be resided in, according to the first community group Information, safeguards the cell group information where any UE.
It is preferred that, above-mentioned first base station, in addition to：
Context maintenance unit, for being entered in the UE for finding to reside in first community by RRC connected states After light connected state, the context of the UE is locally being preserved.
It is preferred that, above-mentioned first base station, in addition to：
RRC connection recovery units, reside in the first community for reception and are in light connected state The RRC connection recovery requests that first UE is sent；According to the RRC connections recovery request, obtain described First UE UE contexts, and after the UE contexts of the first UE are successfully obtained, be based on The UE contexts of first UE, recover the RRC connections between the first UE.
It is preferred that, above-mentioned first base station, the RRC connections recovery unit includes a context and obtains single Member, for according to the RRC connections recovery request, determining the corresponding source base station of RRC connections to be restored, The UE contexts of the first UE are obtained at the source base station.
It is preferred that, above-mentioned first base station, in addition to：
RRC connection establishment units, for respond the first UE initiate Initial R RC connections set up process, NAS recovery processs or RRC connection reconstruction processes, the RRC connections set up between the first UE.
It is preferred that, above-mentioned first base station, in addition to：
The context maintenance unit, is additionally operable to receive on the UE for the 2nd UE that the second base station is sent Request message hereafter, and when locally preserving the 2nd UE UE contexts, by the 2nd UE UE contexts be sent to second base station.
It is preferred that, above-mentioned first base station, in addition to：
The transmitting element, is further used for, by pre-defined dedicated signaling, sending the first community Group notification message.
The embodiment of the present invention additionally provides a kind of mobility management entity of network side, including：
Receiving unit, it is described for receiving the notification message sent from the first UE in light connected state The first community group information where the first UE is carried in notification message, wherein, each small district's groups bag Include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；
Cell group maintenance unit, for according to the notification message, where the first UE described in local maintenance Small district's groups information；
Paging unit, for when needing one UE of paging, being safeguarded according in the cell group maintenance unit The first UE where small district's groups information, in each cell of the small district's groups where the first UE Send the beep-page message for the first UE.
It is preferred that, in above-mentioned mobility management entity, the cell group maintenance unit, specifically for：
In the cell group information where locally not yet recording the first UE, according to the first community group Information, records the cell group information where the UE, and send institute to the mobility management entity of network side State the cell group information where UE；And,
In the cell group information where locally having recorded the first UE, the first community group is judged Whether information is consistent with the cell group information where the UE of current record, and when inconsistent, root According to the first community group information, the cell group information where the UE is updated.
Compared with prior art, motion management method provided in an embodiment of the present invention, UE, base station and shifting Mobility management entity, based on small district's groups, the moving property of UE to light connected state is managed, it is possible to reduce moved Signaling consumption during mobility management.
Brief description of the drawings
Fig. 1 is the transfer figure between three kinds of states of the terminal of prior art；
Fig. 2 is a kind of application scenarios schematic diagram of the motion management method described in the embodiment of the present invention；
Fig. 3 is a kind of specific example of the motion management method described in the embodiment of the present invention；
Fig. 4 is a kind of schematic flow sheet of the motion management method of the embodiment of the present invention；
Fig. 5 is another schematic flow sheet of the motion management method of the embodiment of the present invention；
Fig. 6 is another schematic flow sheet of the motion management method of the embodiment of the present invention；
Fig. 7 is a kind of UE structural representation provided in an embodiment of the present invention；
Fig. 8 is another UE provided in an embodiment of the present invention structural representation；
Fig. 9 is a kind of structural representation of first base station provided in an embodiment of the present invention；
Figure 10 is the structural representation of another first base station provided in an embodiment of the present invention；
Figure 11 is a kind of structural representation of mobility management entity provided in an embodiment of the present invention；
Figure 12 is the structural representation of another mobility management entity provided in an embodiment of the present invention.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached Figure and specific embodiment are described in detail.There is provided such as specific configuration and component in the following description Specific detail just for the sake of help comprehensive understanding embodiments of the invention.Therefore, those skilled in the art It will be apparent to the skilled artisan that the model that can be made various changes and modifications to the embodiments described herein without departing from the present invention Enclose and spirit.In addition, for clarity and brevity, eliminating the description to known function and construction.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text means and embodiment During relevant special characteristic, structure or characteristic is included at least one embodiment of the present invention.Therefore, whole " in one embodiment " or " in one embodiment " that individual specification occurs everywhere not necessarily refers to identical Embodiment.In addition, these specific feature, structure or characteristics can be combined at one in any suitable manner Or in multiple embodiments.
In various embodiments of the present invention, it should be appreciated that the size of the sequence number of above-mentioned each process is not meant to The priority of execution sequence, the execution sequence of each process should be determined with its function and internal logic, without tackling this The implementation process of inventive embodiments constitutes any limit.
In addition, the terms " system " and " network " are often used interchangeably herein.
It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, table Show there may be three kinds of relations, for example, A and/or B, can be represented：Individualism A, while in the presence of These three situations of A and B, individualism B.In addition, character "/" herein, typicallys represent forward-backward correlation Object is a kind of relation of "or".
In embodiment provided herein, it should be appreciated that " B " corresponding with A represents that B and A is related Connection, B can be determined according to A.It is also to be understood that it is true only according to A to determine that B is not meant to according to A Determine B, B can also be determined according to A and/or other information.
In an embodiment of the present invention, the form of base station is not limited, and can be macro base station (Macro Base Station), micro-base station (Pico Base Station), Node B (address of 3G mobile base stations), enhanced Base station (ENB), family's enhanced base station (Femto eNB or Home eNode B or Home eNB Or HNEB), relay station, access point, RRU (Remote Radio Unit, far-end RF module), RRH (Remote Radio Head, remote radio head) etc..UE can be mobile phone (or mobile phone), or Other equipment that can send or receive wireless signal of person, including user equipment (UE), personal digital assistant (PDA), radio modem, radio communication device, hand-held device, laptop computer, wireless Phone, wireless local loop (WLL) stand, movable signal can be converted to the CPE of WiFi signal (Customer Premise Equipment, client terminal) or intelligent movable focus, intelligent appliance or its He is obstructed remarkable to operate with regard to spontaneous equipment communicated with mobile communications network of energy etc..
The embodiment of the present invention is based on light interconnection technique, is introduced for the UE in light connected state a kind of based on small The motion management method of district's groups, can effectively reduce the signaling consumption of mobile management.The embodiment of the present invention In, small district's groups refer to plan in advance or configuration, include multiple cells and the plurality of cell each affiliated Base station.Generally, the configuration of small district's groups can be carried out in the mobility control entity (such as base station) of network side Match somebody with somebody again, it is possible to by base station by pre-defined dedicated signaling, the information of small district's groups is notified to resident In the cell of this base station, and the UE in light connected state.
The scale of the small district's groups configured in the embodiment of the present invention, less than the TA (tracking in existing LTE system Area) scale, so as to reduce the signaling consumption of subsequent pages process.
The embodiment of the present invention introduces a kind of based on small district's groups (cell group) in the light interconnection technique of LTE system Mobility management mechanism and for mobile management small district's groups management and configuration mechanism, compared to tradition Mechanism, can greatly reduce the signaling consumption for mobile management.
In an embodiment of the present invention, when UE is moved in the small district's groups, UE is selected by cell Or gravity treatment carries out the change of serving cell, without switching over.It can be interacted between each base station UE contextual information, for example, by X2 interface or S1 interfaces, UE contextual information is interacted, Therefore when the UE in light connected state needs transmission data, directly it can be initiated in currently resident cell RRC connection recovery processs recover RRC connections.
In embodiments of the present invention, when UE is moved in different small class intervals, UE is entering one , can be by updating location information process, by the small district's groups belonging to the cell after the cell of individual new small district's groups Information simultaneously reports network side, to ensure that network side can grasp UE position letter in the granularity of small district's groups Breath, so as to initiate paging in the granularity of small district's groups, is initiated compared to prior art in TA Paging, when the cell base station in small district's groups is less, the embodiment of the present invention can reduce paging and be related to Cell base station and paging in signaling consumption.
Fig. 2 shows a kind of application scenarios of the embodiment of the present invention, and the application scenarios include UE 21, many Individual base station (such as first base station 22, the second base station 23), also includes MME 24.UE 21 can be according to The various existing implementations of prior art, by cell selection/reselection process, are resident some base station Cell.MME 24 mainly realizes UE mobile management function to ps domain.
Fig. 3 furthermore present a concrete application example of motion management method of the embodiment of the present invention.Figure Two small district's groups are schematically illustrated in 3, wherein small district's groups 1 include cell 1~3, small district's groups 2 include Cell 4~6.Assuming that when UE is resided in the cell 1 of small district's groups 1, being entered gently by RRC connected states Connected state.Then, UE is moved, and is first moved to cell 2 in small district's groups 1, then occurs cell In movement between group, the cell 4 for being moved to small district's groups 2.For the ease of understanding the side of the embodiment of the present invention Case, is specifically described below in conjunction with the example.It is pointed out that Fig. 2,3 are only the present invention A concrete application scene and example for embodiment, is not intended as the restriction of the present invention.
It refer to Fig. 4, a kind of motion management method based on small district's groups provided in an embodiment of the present invention, bag Include following steps：
Step 41, UE is by RRC connected states after light connected state is entered, and receives UE currently resident the The first community group notification message that first base station belonging to one cell is sent, the first community group notification message The first community group information belonging to first community is carried, wherein, each small district's groups include what is be pre-configured with Multiple cells and the plurality of cell each belonging to base station.
In the embodiment of the present invention, network side can by dedicated signaling indicate UE enter light connected state (for example, After the UE for being in RRC connected states completes data transfer).UE for entering light connected state, The UE contexts of the UE are stored in UE sides and network side respectively.Here, in UE by described RRC connected states enter after light connected state, in the first community institute that UE is local and the UE is currently resident The context of the UE is preserved at the first base station of category.
Here, the first base station can be by pre-defined dedicated signaling, the broadcast transmission in this cell Or send the first community group notification message for the UE unicasts in light connected state.Above-mentioned transmission can be with It is to be triggered and sent based on event, such as detects the UE for newly entering light connected state, or periodically send out Send, the embodiment of the present invention is not especially limited to this.
By taking Fig. 3 as an example, it is assumed that when UE is resided in cell 1, established with the corresponding base station of cell 1 RRC connections.Subsequently, UE releases above-mentioned RRC connections, and enters light connection by RRC connected states State, now UE can be by receiving the small district's groups notification message that cell 1 is sent, to determine belonging to cell 1 Small district's groups 1 relevant information, for example, the information such as mark of small district's groups 1.After light connected state is entered, UE will also locally preserve UE context, the corresponding source base station of above-mentioned RRC connections (i.e. network side Base station belonging to cell 1) place also preserves the context of the UE.Here source base station refers to that UE has discharged Above-mentioned RRC connections set up base station.
Step 42, the UE is according to the first community group carried in the first community group notification message Information, in the cell group information where UE described in local maintenance.
Here, the maintenance of the cell group information in step 42 can specifically include：
It is small according to described first in the cell group information where the UE locally not yet records the UE District's groups information, the cell group information where the UE is locally recorded, and to the mobile management of network side Entity sends the cell group information where the UE；
In the cell group information where UE local records have the UE, the first community is judged Whether group information is consistent with the cell group information where the UE of local record, and when inconsistent, According to the first community group information, the cell group information where the UE of renewal local record, and to The mobility management entity of network side sends the cell group information where the UE.
Still by taking Fig. 3 as an example, UE, can be at this after the small district's groups notification message of the transmission of cell 1 is received Safeguard the information of small district's groups 1 in ground.Specifically：
If the information of the local small district's groups for not recording the UE, the information of the small district's groups 1 is being locally recorded, To represent the small district's groups where UE as small district's groups 1, and it also requires by the mobility management entity of network side The information of small district's groups 1 where (not shown in such as MME, Fig. 3) transmission UE；
If local record have the UE small district's groups information, judge local record information whether with cell The information of group 1 is consistent：If inconsistent, then it represents that the small district's groups where UE are changed, and are now needed Update local record the UE small district's groups information, and to network side mobility management entity (such as Not shown in MME, Fig. 3) send UE where small district's groups 1 information；, can not if consistent Perform any action.
By above step, the embodiment of the present invention can realize the mobile management of small district's groups, in UE sides and Network side maintains the cell group information where the UE in light connected state, so that subsequently can be in cell In the range of group, the paging to the UE of light connected state is initiated, is initiated with reducing in larger TA The signaling consumption that paging is produced.
In the embodiment of the present invention, as the UE in light connected state, judge to need to change what is be currently resident During cell, for example, currently resident cell signal quality is deteriorated, or, UE is found that signal quality more Good cell, in order to reduce signaling consumption caused by cell change, the embodiment of the present invention is directed in light connection The UE of state, by cell selection/reselection process, is determined as the Target cell of cell selection/reselection Second community, and the UE cells being currently resident are changed to second community.
After the step of UE cells being currently resident are changed into second community, UE can also enter One step receives the second community group notification message that the second base station belonging to second community is sent, and the small district's groups are led to Know that message carries the second community group information belonging to second community.Then, it is logical according to the second community group Know the second community group information carried in message, safeguard the cell group information where the UE, wherein, When cell group information where the UE that the second community group information is locally recorded with UE is inconsistent, According to the second community group information, the cell group information where the UE of renewal local record, and to The mobility management entity of network side sends the cell group information where the UE.
For example, when the UE in Fig. 3 is moved to cell 2 from cell 1, can select/weigh by cell Newly, currently resident cell is changed to cell 2.Due to the resident cell 2 of now UE still fall within it is small District's groups 1, therefore need not be to the cell group information where the network side transmission UE.And when UE movements To cell 4, selected by cell/again, currently resident cell is changed to cell 4, now UE Resident cell 4 belongs to different small district's groups 2, it is therefore desirable to small where sending the UE to network side District's groups information, small district's groups 2 are updated to by the cell group information where the UE of network side preservation.
It is described when the UE in light connected state needs to send upstream data in the embodiment of the present invention The base belonging to cell (for convenience of description, it referred to the 3rd cell) that UE can be currently resident to the UE Stand and (for convenience of description, it referred to the 3rd base station), send RRC connection recovery requests.It is extensive in RRC connections During multiple, the 3rd base station is according to the RRC connection recovery requests from the corresponding source base of RRC connections Place stand when obtaining the context of the UE, can be according to this if successfully obtaining the context of the UE UE context carries out RRC connections and recovered, if failing to obtain the context of the UE, RRC connections Recovery process fails.
Here, RRC connections can be carried in the RRC connections recovery request and recover the information such as ID, The corresponding source base station of RRC connections to be restored can be determined based on the information, i.e., before the RRC connections institute Set up base station.Here, the 3rd base station is probably the corresponding source base station of RRC connections to be restored, this When the 3rd base station directly from the context for locally obtaining the UE；If the 3rd base station is not RRC to be restored Corresponding source base station is connected, then the 3rd base station can be to the corresponding source base station of RRC connections to be restored The request message of the context of the UE is sent, the context for the UE that source base station is returned is received.
If RRC connections recovery process failure, the UE by Initial R RC connections set up process, NAS recovery processs or RRC connection reconstruction processes, the RRC set up between the 3rd base station connect Connect.
In the embodiment of the present invention, the cell group information where network side maintains the UE in light connected state, Therefore when network side initiates the paging to the UE, it can initiate to seek in the small district's groups where the UE Exhale, now, the UE can receive the information of small district's groups of the network side according to where the UE described The beep-page message that all cells of small district's groups where UE are initiated；Then, the beep-page message is responded, is set up Communication link between network side, to carry out data transmission.Specific paging flow and channel were set up Journey may be referred to the realization of prior art, and the embodiment of the present invention is not limited this.
The motion management method of the embodiment of the present invention is described from UE sides above, further below from base station Side is described.By taking the first base station belonging to first community as an example, Fig. 5 is refer to, the embodiment of the present invention is carried The motion management method based on small district's groups supplied, comprises the following steps：
Step 51, the first base station belonging to first community, determines the first community belonging to the first community Group information.
Step 52, first base station send carry the first community group information first community group notify disappear Breath, so as to the first community and any UE in light connected state are resided in, it is small according to described first District's groups information, safeguards the cell group information where any UE, wherein, each small district's groups include pre- The multiple cells and the plurality of cell first configured each belonging to base station.
Here, first base station can send the first community further by pre-defined dedicated signaling Group notification message.The transmission cycle of above-mentioned signaling or sending method, the present invention are not specifically limited.
In the embodiment of the present invention, when first base station finds the UE for residing in first community by RRC connected states Into after light connected state, first base station can locally preserve the context of the UE.
In the embodiment of the present invention, the first base station, which can be received, resides in the first community and in light The RRC connection recovery requests that first UE of connected state is sent；Then, recovered according to the RRC connections Request, obtains the UE contexts of the first UE, and in the UE for successfully obtaining the first UE After context, based on the UE contexts of the first UE, recover the RRC between the first UE Connection.
In the embodiment of the present invention, first base station obtains the concrete mode bag of the UE contexts of the first UE Include：
First base station determines the corresponding source of RRC connections to be restored according to the RRC connections recovery request Base station, obtains the UE contexts of the first UE at the source base station.
Here, RRC connections can be carried in the RRC connections recovery request and recover the information such as ID, The corresponding source base station of RRC connections to be restored can be determined based on the information, i.e., before the RRC connections institute Set up base station.First base station is probably the corresponding source base station of RRC connections to be restored, and now first Base station is directly from the context for locally obtaining the UE；If first base station is not RRC connections to be restored Corresponding source base station, then first base station can be to the corresponding source base station transmission of the RRC connections to be restored The request message of the context of the UE, receives the context for the UE that source base station is returned.
In the embodiment of the present invention, the Initial R RC connections that first base station can also respond the first UE initiations are built Vertical process, NAS recovery processs or RRC connection reconstruction processes, set up between the first UE RRC connections.For example, the first UE RRC connections recover failure when, can by any of the above-described process, Set up RRC connections.
In the embodiment of the present invention, first base station can also receive the second base station transmission for the 2nd UE The request message of UE contexts；Now, if first base station locally preserves the 2nd UE UE contexts, The UE contexts of the 2nd UE are then sent to second base station；Meat does not preserve the 2nd UE's UE contexts, then can send one to the second base station and indicate message, for representing that this base station does not record the Two UE UE contexts.
Described further below at the mobility management entity of network side, it is provided in an embodiment of the present invention to be based on The motion management method of small district's groups, refer to Fig. 6, and the motion management method comprises the following steps：
Step 61, the mobility management entity of network side, is received from the first UE in light connected state The first community group information where the first UE is carried in the notification message of transmission, the notification message, Wherein, each small district's groups include the multiple cells being pre-configured with and the plurality of cell each affiliated base station；
Step 62, the mobility management entity is according to the notification message, described in local maintenance first The information of small district's groups where UE；
Step 63, the mobility management entity is when needing one UE of paging, according to the first UE The information of the small district's groups at place, sends for the in each cell of the small district's groups where the first UE One UE beep-page message.
Here, the information of the small district's groups where maintenance the first UE, can specifically include：
The mobility management entity in the cell group information where not yet recording the first UE, according to The first community group information, records the cell group information where the UE, and to the mobility of network side Management entity sends the cell group information where the UE；
The mobility management entity judges in the cell group information where having recorded the first UE Whether the first community group information is consistent with the cell group information where the UE of current record, and When inconsistent, according to the first community group information, the cell group information where the UE is updated.
Based on above-described motion management method, the embodiment of the present invention, which is additionally provided, realizes the above method UE, base station and mobility management entity, will be introduced respectively below.
Fig. 7, a kind of UE provided in an embodiment of the present invention are refer to, as shown in fig. 7, the UE 70 includes：
First receiving unit 71, for after light connected state is entered by RRC connected states, being received in this UE The first community group notification message that first base station belonging to the first community that this UE is currently resident is sent, it is described First community group notification message carries the first community group information belonging to first community, wherein, each cell Group include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；
Cell group maintenance unit 72, for according to described carried in the first community group notification message One cell group information, safeguards the cell group information where this UE.
Here, first receiving unit 71, specifically for from pre-defined dedicated signaling, receiving The first community group notification message that the first base station is sent.
It is preferred that, above-mentioned UE can also include：
Context maintenance unit, for this UE by the RRC connected states enter light connected state after, The UE is preserved at first base station at this UE and belonging to first community that the UE is currently resident Context.
It is preferred that, in above-mentioned UE, the cell group maintenance unit, specifically for：
It is small according to described first in the cell group information where the UE locally not yet records the UE District's groups information, the cell group information where the UE is locally recorded, and to the mobile management of network side Entity sends the cell group information where the UE；
In the cell group information where UE local records have the UE, the first community is judged Whether group information is consistent with the cell group information where the UE of local record, and when inconsistent, According to the first community group information, the cell group information where the UE of renewal local record, and to The mobility management entity of network side sends the cell group information where the UE.
It is preferred that, above-mentioned UE can also include：
Cell selection/reselection unit, for when this UE is in light connected state, if judging to need to change this During the cell that UE is currently resident, by cell selection/reselection process, cell selection/reselection is determined as The second community of Target cell, and the UE cells being currently resident are changed to second community.
It is preferred that, above-mentioned UE can also include：
Second receiving unit, for being changed in the described UE cells being currently resident after second community, The second community group notification message that the second base station belonging to second community is sent is received, the small district's groups notify to disappear Breath carries the second community group information belonging to second community；
The cell group maintenance unit, is additionally operable to according to second carried in the second community group notification message Cell group information, safeguards the cell group information where the UE, wherein, in the second community group information When cell group information where the UE locally recorded with UE is inconsistent, according to the second community group Information, updates the cell group information where the UE of local record, and to the mobile management of network side Entity sends the cell group information where the UE.
It is preferred that, above-mentioned UE can also include：
RRC connection recovery units, for being in light connected state in this UE, and when needing to send upstream data, The 3rd base station belonging to the 3rd currently resident UE cell sends RRC connection recovery requests；Wherein, If the 3rd base station obtains institute according to the RRC connection recovery requests from the corresponding source base station of RRC connections When stating UE context, then with the 3rd base station based on the UE contexts each obtained, recover described RRC connections between UE and the 3rd base station；
Transmitting element, for after RRC connections recovery, based on the upper line number of RRC connections transmission According to.
It is preferred that, above-mentioned UE can also include：
RRC connection establishment units, for recovering in the RRC connections of the RRC connections recovery unit When journey fails, process, NAS recovery processs or RRC connection reconstructions are set up by Initial R RC connections Process, the RRC connections set up between the 3rd base station.
It is preferred that, above-mentioned UE can also include：
Page response unit, for receiving the information of small district's groups of the network side according to where the UE described The beep-page message that all cells of small district's groups where UE are initiated, and the beep-page message is responded, set up and net Communication link between network side.
It refer to Fig. 8, UE provided in an embodiment of the present invention another structure, as shown in figure 8, the UE Including：
First transceiver 801, for after light connected state is entered by RRC connected states, receiving this in this UE The first community group notification message that first base station belonging to the first community that UE is currently resident is sent, described the One small district's groups notification message carries the first community group information belonging to first community, wherein, each small district's groups Include the multiple cells being pre-configured with and the plurality of cell each belonging to base station.
First processor 802, for small according to carried in the first community group notification message described first District's groups information, safeguards the cell group information where this UE.
Wherein, in fig. 8, bus architecture can include any number of interconnection bus and bridge, specifically by First processor 802 represent one or more processors and first memory 803 represent memory it is each Circuit is planted to link together.Bus architecture can also be by such as ancillary equipment, voltage-stablizer and management circuit Or the like various other circuits link together, these are all it is known in the art, therefore, herein not It is described further again.EBI provides interface.First transceiver 801 can be multiple element, I.e. including transmitter and receiver, there is provided the unit for being communicated over a transmission medium with various other devices. For different user equipmenies, user interface 804, which can also be external to be inscribed, needs the interface of equipment, The equipment of connection includes but is not limited to keypad, display, loudspeaker, microphone, control stick etc..
It refer to Fig. 9, first base station provided in an embodiment of the present invention, as shown in figure 9, the first base station 90 Including：
Determining unit 91, for determining the first community group information belonging to first community, wherein, described One cell is the cell of first base station, and each small district's groups include multiple cells for being pre-configured with and the plurality of Cell each belonging to base station；
Transmitting element 92, the first community group that the first community group information is carried for sending notifies to disappear Breath, so as to the first community and any UE in light connected state are resided in, it is small according to described first District's groups information, safeguards the cell group information where any UE.
It is preferred that, above-mentioned first base station can also include：
Context maintenance unit, for being entered in the UE for finding to reside in first community by RRC connected states After light connected state, the context of the UE is locally being preserved.
It is preferred that, above-mentioned first base station can also include：
RRC connection recovery units, reside in the first community for reception and are in light connected state The RRC connection recovery requests that first UE is sent；According to the RRC connections recovery request, obtain described First UE UE contexts, and after the UE contexts of the first UE are successfully obtained, be based on The UE contexts of first UE, recover the RRC connections between the first UE.
It is preferred that, in above-mentioned first base station, the RRC connections recovery unit includes a context and obtains single Member, for according to the RRC connections recovery request, determining the corresponding source base station of RRC connections to be restored, The UE contexts of the first UE are obtained at the source base station.
It is preferred that, above-mentioned first base station can also include：
RRC connection establishment units, for respond the first UE initiate Initial R RC connections set up process, NAS recovery processs or RRC connection reconstruction processes, the RRC connections set up between the first UE.
It is preferred that, above-mentioned first base station can also include：
The context maintenance unit, is additionally operable to receive on the UE for the 2nd UE that the second base station is sent Request message hereafter, and when locally preserving the 2nd UE UE contexts, by the 2nd UE UE contexts be sent to second base station.
It is preferred that, above-mentioned first base station can also include：
The transmitting element, is further used for, by pre-defined dedicated signaling, sending the first community Group notification message.
Figure 10 is refer to, UE provided in an embodiment of the present invention another structure as shown in Figure 10, should First base station includes：
Second transceiver 1001, the first community group that the first community group information is carried for sending is led to Message is known, so as to the first community and any UE in light connected state be resided in, according to described the One cell group information, safeguards the cell group information where any UE.
Second processor 1002, for determining the first community group information belonging to first community, wherein, institute The cell that first community is first base station is stated, each small district's groups include the multiple cells being pre-configured with and are somebody's turn to do Multiple cells each belonging to base station.
Wherein, in Fig. 10, bus architecture can include the bus and bridge of any number of interconnection, specifically The memory that the one or more processors and second memory 1003 represented by second processor 1002 are represented Various circuits link together.Bus architecture can also be by such as ancillary equipment, voltage-stablizer and power management Various other circuits of circuit or the like are linked together, these be all it is known in the art, therefore, this No longer it is described further for text.EBI provides interface.Second transceiver 1001 can be many Individual element, i.e., including transmitter and receiver, there is provided for being communicated over a transmission medium with various other devices Unit.
Figure 11 is refer to, a kind of mobility management entity of network side provided in an embodiment of the present invention is such as schemed Shown in 11, the mobility management entity 110 includes：
Receiving unit 111, for receiving the notification message sent from the first UE in light connected state, The first community group information where the first UE is carried in the notification message, wherein, each cell Group include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；
Cell group maintenance unit 112, for according to the notification message, in the first UE described in local maintenance The information of the small district's groups at place；
Paging unit 113, for when needing one UE of paging, according in the cell group maintenance unit The information of small district's groups where the first UE safeguarded, each in the small district's groups where the first UE is small The beep-page message for the first UE is sent in area.
It is preferred that, in above-mentioned mobility management entity, the cell group maintenance unit, specifically for：
In the cell group information where locally not yet recording the first UE, according to the first community group Information, records the cell group information where the UE, and send institute to the mobility management entity of network side State the cell group information where UE；And,
In the cell group information where locally having recorded the first UE, the first community group is judged Whether information is consistent with the cell group information where the UE of current record, and when inconsistent, root According to the first community group information, the cell group information where the UE is updated.
Figure 12 is refer to, another structure of mobility management entity provided in an embodiment of the present invention is such as schemed Shown in 12, the mobility management entity includes：
Transceiver 1201, for receiving the notification message sent from the first UE in light connected state, The first community group information where the first UE is carried in the notification message, wherein, each cell Group include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；And, described The beep-page message for the first UE is sent in each cell of small district's groups where first UE.
3rd processor 1202, for according to the notification message, where the first UE described in local maintenance Small district's groups information；And, when needing one UE of paging, according in the cell group maintenance unit The information of small district's groups where the first UE safeguarded.
Wherein, in fig. 12, bus architecture can include the bus and bridge of any number of interconnection, specifically The memory that the one or more processors and the 3rd memory 1203 represented by the 3rd processor 1202 are represented Various circuits link together.Bus architecture can also be by such as ancillary equipment, voltage-stablizer and power management Various other circuits of circuit or the like are linked together, these be all it is known in the art, therefore, this No longer it is described further for text.EBI provides interface.Transceiver 1201 can be multiple Element, i.e., including transmitter and receiver, there is provided for being communicated over a transmission medium with various other devices Unit.
Described above is the preferred embodiment of the present invention, it is noted that for the common skill of the art For art personnel, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, These improvements and modifications also should be regarded as protection scope of the present invention.

Claims (36)

1. a kind of motion management method based on small district's groups, it is characterised in that including：
UE is received belonging to the first community that UE is currently resident after light connected state is entered by RRC connected states The first community group notification message that sends of first base station, the first community group notification message carries first First community group information belonging to cell, wherein, each small district's groups include multiple cells for being pre-configured with And the plurality of cell each belonging to base station；
The UE according to the first community group information carried in the first community group notification message, Cell group information where UE described in local maintenance.
2. motion management method as claimed in claim 1, it is characterised in that also include：
The UE by the RRC connected states after light connected state is entered, UE is local and the UE The context of the UE is currently preserved at the first base station belonging to resident first community.
3. motion management method as claimed in claim 2, it is characterised in that
It is described according to the first community group information carried in the first community group notification message, local The step of safeguarding the cell group information where the UE includes：
It is small according to described first in the cell group information where the UE locally not yet records the UE District's groups information, the cell group information where the UE is locally recorded, and to the mobile management of network side Entity sends the cell group information where the UE；
In the cell group information where UE local records have the UE, the first community is judged Whether group information is consistent with the cell group information where the UE of local record, and when inconsistent, According to the first community group information, the cell group information where the UE of renewal local record, and to The mobility management entity of network side sends the cell group information where the UE.
4. motion management method as claimed in claim 2, it is characterised in that when in light connected state The UE, when judging to need to change currently resident cell, the motion management method also includes：
The UE in light connected state, by cell selection/reselection process, be determined as cell selection/ The second community of the Target cell of gravity treatment, and the UE cells being currently resident are changed to second community.
5. motion management method as claimed in claim 4, it is characterised in that the UE is current After the step of resident cell is changed to second community, the motion management method also includes：
The second community group notification message that the second base station belonging to second community is sent is received, the small district's groups are led to Know that message carries the second community group information belonging to second community；
According to the second community group information carried in the second community group notification message, the UE institutes are safeguarded Cell group information, wherein, the UE institutes locally recorded in the second community group information and UE Cell group information it is inconsistent when, according to the second community group information, update the described of local record Cell group information where UE, and it is small where sending the UE to the mobility management entity of network side District's groups information.
6. the motion management method as described in any one of claim 2 to 5, it is characterised in that at place When the UE of light connected state needs to send upstream data, the motion management method also includes：
The 3rd base station belonging to the UE to the 3rd currently resident UE cell sends RRC connections Recovery request；Wherein, if the 3rd base station according to the RRC connection recovery requests from RRC connections pair When the context of the UE is obtained at the source base station answered, the UE is based on respective with the 3rd base station UE contexts, recover RRC connections between the two；
The UE transmits upstream data after RRC connections recovery based on the RRC connections.
7. motion management method as claimed in claim 6, it is characterised in that
If RRC connections recovery process failure, the UE by Initial R RC connections set up process, NAS recovery processs or RRC connection reconstruction processes, the RRC set up between the 3rd base station connect Connect.
8. the motion management method as described in any one of claim 3 to 5, it is characterised in that
The information that the UE receives small district's groups of the network side according to where the UE is small where the UE The beep-page message that all cells of district's groups are initiated；
The UE responds the beep-page message, the communication link set up between network side.
9. motion management method as claimed in claim 1, it is characterised in that
The UE in light connected state, further from pre-defined dedicated signaling, receives described the The first community group notification message that one base station is sent.
10. a kind of motion management method based on small district's groups, it is characterised in that including：
First base station belonging to first community, determines the first community group information belonging to the first community；
First base station sends the first community group notification message for carrying the first community group information, so as to stay The first community and any UE in light connected state are stayed in, according to the first community group information, The cell group information where any UE is safeguarded, wherein, each small district's groups include be pre-configured with many Individual cell and the plurality of cell each belonging to base station.
11. motion management method as claimed in claim 10, it is characterised in that also include：
First base station is finding to reside in the UE of first community after RRC connected states enter light connected state, First base station is locally preserving the context of the UE.
12. motion management method as claimed in claim 11, it is characterised in that also include：
First base station reception resides in the first community and is in the first UE transmissions of light connected state RRC connection recovery requests；
First base station obtains the UE contexts of the first UE according to the RRC connections recovery request, And after the UE contexts of the first UE are successfully obtained, above and below the UE based on the first UE Text, recovers the RRC connections between the first UE.
13. motion management method as claimed in claim 12, it is characterised in that the first base station Include according to the RRC connections recovery request, the step of the UE contexts for obtaining the first UE：
First base station determines the corresponding source of RRC connections to be restored according to the RRC connections recovery request Base station, obtains the UE contexts of the first UE at the source base station.
14. motion management method as claimed in claim 12, it is characterised in that also include：
Process, NAS recovery processs or RRC are set up in the Initial R RC connections for responding the first UE initiations Connection reconstruction process, the RRC connections set up between the first UE.
15. motion management method as claimed in claim 10, it is characterised in that also include：
First base station receives the request message for the UE contexts for the 2nd UE that the second base station is sent；
First base is when locally preserving the 2nd UE UE contexts, by the UE of the 2nd UE Hereafter it is sent to second base station.
16. motion management method as claimed in claim 10, it is characterised in that also include：
First base station sends the first community group notification message further by pre-defined dedicated signaling.
17. a kind of motion management method based on small district's groups, it is characterised in that including：
The mobility management entity of network side, receives the notice sent from the first UE in light connected state The first community group information where the first UE is carried in message, the notification message, wherein, often Individual small district's groups include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；
The mobility management entity is according to the notification message, where the first UE described in local maintenance The information of small district's groups；
The mobility management entity is small according to where the first UE when needing one UE of paging The information of district's groups, sends for the first UE's in each cell of the small district's groups where the first UE Beep-page message.
18. motion management method as claimed in claim 17, it is characterised in that the mobility pipe Entity is managed according to the notification message, in the step of the information of the small district's groups where the first UE described in local maintenance Suddenly include：
The mobility management entity in the cell group information where not yet recording the first UE, according to The first community group information, records the cell group information where the UE, and to the mobility of network side Management entity sends the cell group information where the UE；
The mobility management entity judges in the cell group information where having recorded the first UE Whether the first community group information is consistent with the cell group information where the UE of current record, and When inconsistent, according to the first community group information, the cell group information where the UE is updated.
19. a kind of UE, it is characterised in that including：
First receiving unit, for after light connected state is entered by RRC connected states, receiving this in this UE The first community group notification message that first base station belonging to the first community that UE is currently resident is sent, described the One small district's groups notification message carries the first community group information belonging to first community, wherein, each small district's groups Include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；
Cell group maintenance unit, for small according to carried in the first community group notification message described first District's groups information, safeguards the cell group information where this UE.
20. UE as claimed in claim 19, it is characterised in that also include：
Context maintenance unit, for this UE by the RRC connected states enter light connected state after, The UE is preserved at first base station at this UE and belonging to first community that the UE is currently resident Context.
21. UE as claimed in claim 20, it is characterised in that
The cell group maintenance unit, specifically for：
It is small according to described first in the cell group information where the UE locally not yet records the UE District's groups information, the cell group information where the UE is locally recorded, and to the mobile management of network side Entity sends the cell group information where the UE；
In the cell group information where UE local records have the UE, the first community is judged Whether group information is consistent with the cell group information where the UE of local record, and when inconsistent, According to the first community group information, the cell group information where the UE of renewal local record, and to The mobility management entity of network side sends the cell group information where the UE.
22. UE as claimed in claim 20, it is characterised in that also include：
Cell selection/reselection unit, for when this UE is in light connected state, if judging to need to change this During the cell that UE is currently resident, by cell selection/reselection process, cell selection/reselection is determined as The second community of Target cell, and the UE cells being currently resident are changed to second community.
23. UE as claimed in claim 22, it is characterised in that also include：
Second receiving unit, for being changed in the described UE cells being currently resident after second community, The second community group notification message that the second base station belonging to second community is sent is received, the small district's groups notify to disappear Breath carries the second community group information belonging to second community；
The cell group maintenance unit, is additionally operable to according to second carried in the second community group notification message Cell group information, safeguards the cell group information where the UE, wherein, in the second community group information When cell group information where the UE locally recorded with UE is inconsistent, according to the second community group Information, updates the cell group information where the UE of local record, and to the mobile management of network side Entity sends the cell group information where the UE.
24. the UE as described in any one of claim 20 to 23, it is characterised in that also include：
RRC connection recovery units, for being in light connected state in this UE, and when needing to send upstream data, The 3rd base station belonging to the 3rd currently resident UE cell sends RRC connection recovery requests；Wherein, If the 3rd base station obtains institute according to the RRC connection recovery requests from the corresponding source base station of RRC connections When stating UE context, then respective UE contexts are based on the 3rd base station, recover the UE RRC between the 3rd base station is connected；
Transmitting element, for after RRC connections recovery, based on the upper line number of RRC connections transmission According to.
25. UE as claimed in claim 24, it is characterised in that also include：
RRC connection establishment units, for recovering in the RRC connections of the RRC connections recovery unit When journey fails, process, NAS recovery processs or RRC connection reconstructions are set up by Initial R RC connections Process, the RRC connections set up between the 3rd base station.
26. the UE as described in any one of claim 21 to 23, it is characterised in that also include：
Page response unit, for receiving the information of small district's groups of the network side according to where the UE described The beep-page message that all cells of small district's groups where UE are initiated, and the beep-page message is responded, set up and net Communication link between network side.
27. UE as claimed in claim 19, it is characterised in that
First receiving unit, specifically for from pre-defined dedicated signaling, receiving first base Stand send the first community group notification message.
28. a kind of first base station, it is characterised in that including：
Determining unit, for determining the first community group information belonging to first community, wherein, described first is small Area is the cell of first base station, and each small district's groups include the multiple cells and the plurality of cell being pre-configured with Base station belonging to each；
Transmitting element, the first community group notification message of the first community group information is carried for sending, So as to the first community and any UE in light connected state be resided in, according to the first community group Information, safeguards the cell group information where any UE.
29. first base station as claimed in claim 28, it is characterised in that also include：
Context maintenance unit, for being entered in the UE for finding to reside in first community by RRC connected states After light connected state, the context of the UE is locally being preserved.
30. first base station as claimed in claim 29, it is characterised in that also include：
RRC connection recovery units, reside in the first community for reception and are in light connected state The RRC connection recovery requests that first UE is sent；According to the RRC connections recovery request, obtain described First UE UE contexts, and after the UE contexts of the first UE are successfully obtained, be based on The UE contexts of first UE, recover the RRC connections between the first UE.
31. first base station as claimed in claim 30, it is characterised in that the RRC connections recover single Member includes a context obtaining unit, for according to the RRC connections recovery request, determining to be restored The corresponding source base station of RRC connections, obtains the UE contexts of the first UE at the source base station.
32. first base station as claimed in claim 30, it is characterised in that also include：
RRC connection establishment units, for respond the first UE initiate Initial R RC connections set up process, NAS recovery processs or RRC connection reconstruction processes, the RRC connections set up between the first UE.
33. first base station as claimed in claim 29, it is characterised in that also include：
The context maintenance unit, is additionally operable to receive on the UE for the 2nd UE that the second base station is sent Request message hereafter, and when locally preserving the 2nd UE UE contexts, by the 2nd UE UE contexts be sent to second base station.
34. first base station as claimed in claim 28, it is characterised in that also include：
The transmitting element, is further used for, by pre-defined dedicated signaling, sending the first community Group notification message.
35. a kind of mobility management entity of network side, it is characterised in that including：
Receiving unit, it is described for receiving the notification message sent from the first UE in light connected state The first community group information where the first UE is carried in notification message, wherein, each small district's groups bag Include the multiple cells being pre-configured with and the plurality of cell each belonging to base station；
Cell group maintenance unit, for according to the notification message, where the first UE described in local maintenance Small district's groups information；
Paging unit, for when needing one UE of paging, being safeguarded according in the cell group maintenance unit The first UE where small district's groups information, in each cell of the small district's groups where the first UE Send the beep-page message for the first UE.
36. mobility management entity as claimed in claim 35, it is characterised in that
The cell group maintenance unit, specifically for：
In the cell group information where locally not yet recording the first UE, according to the first community group Information, records the cell group information where the UE, and send institute to the mobility management entity of network side State the cell group information where UE；And,
In the cell group information where locally having recorded the first UE, the first community group is judged Whether information is consistent with the cell group information where the UE of current record, and when inconsistent, root According to the first community group information, the cell group information where the UE is updated.
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