CN106961747A - Base station and the method and device that configuration connection recovers the method for information, connection recovers - Google Patents

Abstract

A kind of base station and the method and device that configuration connection recovers the method for information, connection recovers, the method that the base station configuration connection recovers information include：When judgement migrates the user terminal to Idle state from connected state, the user terminal is preserved in the contextual information of base station side and RRC connections hang-up signaling is generated；RRC connections are sent to the user terminal and hang up signaling, to control the user terminal to be migrated from connected state to Idle state.Using methods described and device, connection can be improved and recover the successful probability of flow.

Description

Base station and the method and device that configuration connection recovers the method for information, connection recovers

Technical field

Recover the side of information the present invention relates to wireless communication field, more particularly to a kind of base station and configuration connection The method and device that method, connection recover.

Background technology

In Long Term Evolution (Long Term Evolution, LTE) system, user terminal (User Equipment, UE) after connected state is entered, base station can distribute necessary parameter such as safety for the UE and calculate Method, the related configuration parameter of media intervention key-course (belonging to Layer 2), the related configuration ginseng of physical layer Number (Layer 1) and the related configuration parameter of wireless chain control layer (Layer 3) such as Radio Link lose The parameter such as lose, for the carrying of foundation, base station need to know for the carrying set up between core net Channel information be GTP tunnel, these above-mentioned parameters be referred to as UE context (UE Context) letter Breath.

In 3GPP Release 13, for some low cost terminals, its business set up is generally fair Perhaps the business postponed.For this Terminal Type, in order to reduce the signaling consumption of its access network, introduce Restoration Mechanism or for suspension mechanism (RRC Suspend), the UE into Idle state needs to retain this The contextual information that access network is configured, base station can also retain the contextual information of the UE, specially UE Access Layer configuration parameter, in core net mobile management entity (Mobility Management Entity, MME) can also retain the contextual information of the UE, specially the configuration parameter of UE Non-Access Stratum and The information such as GTP tunnel.

When indicating that UE enters Idle state, base station can issue a special identifier to UE, referred to as recover mark (Resume ID).When UE access networks again, UE can initiate connection and recover flow, to base station Indicate the Resume ID of itself.Base station can be identified according to Resume ID before the UE, and application The contextual information of preservation is that the UE recoveries were originally the service channel that the UE is set up：That is S1 interfaces GTP tunnel and it is corresponding eat dishes without rice or wine on Data Radio Bearer, so described UE can use the service channel Carry out data transmission again.Whole process may need not reconfigure Radio Resource, can greatly reduce signaling Expense.

In existing connection recovers flow, UE is in re-accessing network, you can initiates connection and recovers stream Journey.However, the possibility that existing connection recovers flow failure is higher.

The content of the invention

Present invention solves the technical problem that being how to improve connection to recover the successful probability of flow.

In order to solve the above technical problems, the embodiment of the present invention provides a kind of method that base station configuration connection recovers, Including：Judge whether from connected state to migrate the user terminal of access to Idle state；When judgement is used described Family terminal from connected state migrate to Idle state when, preserve the contextual information of the user terminal in base station side And RRC connections hang-up signaling is generated, signaling is hung up in the RRC connections to be included：For the user terminal The recovery mark of distribution, and it is following at least one：When being preserved needed for the contextual information of subscriber terminal side Long, connection recovers the suitable application region of flow；RRC connections, which are sent, to the user terminal hangs up signaling, with The user terminal is controlled to be migrated from connected state to Idle state.

Optionally, also include when judgement migrates the user terminal to Idle state from connected state：To MME, which is sent, deactivates message, indicates that the MME preserves the user terminal above and below MME sides Literary information, the deactivation message includes preserving duration, the use needed for the contextual information of MME sides Duration is preserved needed for the contextual information of family end side with being preserved needed for the contextual information of the MME sides Duration is equal.

Optionally, also include before RRC connections hang-up signaling is sent to the user terminal：Receive institute State the deactivation confirmation message of MME feedbacks.

Optionally, the method that the base station configuration connection recovers information also includes：Connect to itself there is X2 The adjacent base station of mouth sends X2 interface signaling, and the X2 interface signaling includes：The user terminal exists The contextual information of base station side, the user terminal are corresponding to recover mark, and following at least one： Duration, connection are preserved needed for the contextual information of base station side and recovers the suitable application region of flow, the base station side Contextual information needed for preserving appearance when preserve needed for the contextual information of duration and the subscriber terminal side Deng.

Optionally, the method that the base station configuration connection recovers information also includes：When the adjacent base station connects After receiving the X2 interface signaling, the adjacent base station by the X2 interface signaling send to it is described There is the adjacent base station of X2 interface in adjacent base station, described to there is the adjacent of X2 interface with the adjacent base station Base station does not include the base station.

Optionally, the suitable application region that the connection recovers flow includes：One or more cells, one or Multiple trace regions codes.

The embodiment of the present invention additionally provides a kind of method for connecting and recovering, including：When receiving user terminal During the RRC connection recovery requests of transmission, the user is obtained from the RRC connections recovery request whole End is corresponding to recover mark, and the user terminal is corresponding to be recovered to be designated access before the user terminal The corresponding first base station distribution of cell；Recover to identify according to described, from the recovery mark of storage and base station The corresponding user terminal is searched in the mapping relation information of the contextual information of side above and below base station side Literary information, and the user terminal is being found after the contextual information of base station side, it is whole to the user End sends RRC connections and recovers completion message；To MME send context message activation request, it is described on Hereafter message activation request includes the identification information of the user terminal；Receive the upper of the MME transmissions Context activation confirmation message, the context activation confirmation message is the MME whole according to the user The identification information at end finds what is sent after the contextual information of corresponding MME sides；To the user terminal Send a notification message, the information recovered in the notification message comprising instruction carrying.

Optionally, the corresponding recovery of the user terminal is designated：The first base station judgement is used described Family terminal from connected state migrate to Idle state when, the user terminal is distributed.

Optionally, the mapping relation information of the recovery mark and the contextual information of base station side is connect by X2 Mouth is obtained from adjacent base station, and the adjacent base station is first base station.

Optionally, the mapping relation information of the recovery mark and the contextual information of base station side is connect using X2 Mouth is obtained by adjacent base station from the first base station, and the adjacent base station has X2 with the first base station Interface.

Optionally, the mark of recovering in the mapping relation information of the contextual information of base station side with also including Following at least one：Duration, connection are preserved needed for the contextual information of base station side and recovers the applicable area of flow Domain.

Optionally, the method that the connection recovers also includes：Above and below the base station side is preserved when detecting The duration of literary information reaching when preserve duration needed for the contextual information of the base station side, discharges described recover Mark and the mapping relation information of the contextual information of base station side.

The embodiment of the present invention additionally provides a kind of method that user terminal connection recovers, including：When receiving When signaling is hung up in the RRC connections that first base station is issued, preserve the RRC connections and hang up signaling and use The contextual information of family end side；Signaling is hung up in the RRC connections to be included：The first base station is described The recovery mark of user terminal distribution, and it is following at least one：The contextual information institute of subscriber terminal side Duration, connection need to be preserved and recover the suitable application region of flow；When performing completion re-selecting cell, according to described The information in signaling is hung up in RRC connections, judges whether to meet the condition that connection recovers of initiating；Sent out when meeting When playing the condition that connection recovers, initiate connection and recover flow.

Optionally, the recovery flow of initiating includes：RRC connection recovery requests are sent to the second base station, It is the recovery mark that the user terminal is distributed that the RRC connections recovery request, which includes the first base station, Know；The RRC connections recovery completion message that second base station is sent is received, the RRC connections recover Completion message is：Second base station recovers to identify according to described, finds corresponding with the recovery mark The user terminal generate after the contextual information of base station side.

Optionally, it is described to judge whether that meeting the condition for initiating to recover flow includes：Judge what is be currently accessed Whether cell belongs to the suitable application region that the connection recovers flow.

Optionally, the suitable application region that the connection recovers flow whether is belonged in the cell for judging to be currently accessed Also include before：Judge whether the duration for preserving the contextual information of the subscriber terminal side reaches the use Duration is preserved needed for the contextual information of family end side.

Optionally, the method that the user terminal connection recovers also includes：The user is preserved when detecting The duration of the contextual information of end side preserves duration needed for reaching the contextual information of the subscriber terminal side When, discharge the contextual information of the subscriber terminal side.

Optionally, the method that the user terminal connection recovers also includes：When the preservation subscriber terminal side Contextual information duration be not up to the contextual information of the subscriber terminal side needed for preserve duration, and When the cell being currently accessed is not belonging to the suitable application region of the connection recovery flow, if there is service request, Then RRC connections are set up in base station corresponding with the cell being currently accessed again；It is currently accessed described in receiving The corresponding base station of cell for the user terminal distribute new subscriber terminal side contextual information, with Base station corresponding with the cell being currently accessed carries out service interaction；Continuing the preservation first base station is The contextual information of the subscriber terminal side of the user terminal distribution.

Optionally, also include after carrying out service interaction in base station corresponding with the cell being currently accessed： When not receiving the recovery mark that the corresponding base station of cell being currently accessed is issued, discharge described new Subscriber terminal side contextual information；Issued when receiving the corresponding base station of cell being currently accessed Recovery mark when, the contextual information of the subscriber terminal side preserved before release preserves described new Subscriber terminal side contextual information.

The embodiments of the invention provide a kind of base station, including：First judging unit, for judge whether by The user terminal of access is migrated to Idle state from connected state；First storage unit, for judging single when described Member judgement by the user terminal from connected state migrate to Idle state when, preserve the user terminal in base station The contextual information of side；Generation unit, for being adjudicated when the judging unit by the user terminal from even When connecing state and migrating to Idle state, signaling, the RRC connections hang-up signaling bag are hung up in generation RRC connections Include：The recovery mark distributed for the user terminal, and it is following at least one：Subscriber terminal side it is upper Duration, connection are preserved needed for context information and recovers the suitable application region of flow；First transmitting element, for The user terminal sends RRC connections and hangs up signaling.

Optionally, the base station also includes：Second transmitting element, message is deactivated for being sent to MME, Indicate that the MME preserves the user terminal in the contextual information of MME sides, the deactivation message Include preserving duration, the contextual information institute of the subscriber terminal side needed for the contextual information of MME sides Duration need to be preserved equal with preserving duration needed for the contextual information of the MME sides.

Optionally, the base station also includes：First receiving unit, for receiving going for the MME feedbacks Activate confirmation message.

Optionally, the base station also includes：3rd transmitting element, suitable for there is X2 interface to itself Adjacent base station sends X2 interface signaling, and the X2 interface signaling includes：The user terminal is in base station The contextual information of side, the user terminal are corresponding to recover mark, and following at least one：Base station Duration, the connection are preserved needed for the contextual information of side and recovers the suitable application region of flow, the base station side Contextual information needed for preserving appearance when preserve needed for the contextual information of duration and the subscriber terminal side Deng.

Optionally, after the adjacent base station receives the X2 interface signaling, the adjacent base station will The X2 interface signaling is sent to the adjacent base station that there is X2 interface with the adjacent base station, described and institute State adjacent base station and there is the adjacent base station of X2 interface not including the base station.

The embodiment of the present invention additionally provides a kind of device for connecting and recovering, including：Acquiring unit, for from The corresponding recovery of the user terminal is obtained in the RRC connection recovery requests that the user terminal received is sent Mark, it is corresponding that the corresponding recovery of the user terminal is designated the cell accessed before the user terminal First base station distribution；Searching unit, for recovering to identify according to described, from the recovery of storage mark with The contextual information of corresponding base station side is searched in the mapping relation information of the contextual information of base station side, and The user terminal is being found after the contextual information of base station side, RRC is sent to the user terminal Connection recovers completion message；4th transmitting element, is asked for sending context message activation to MME, The context message activation request includes the identification information of the user terminal；Second receiving unit, For receiving the context activation confirmation message that the MME is sent, the context activation confirmation message is The MME believes in the context that corresponding MME sides are found according to the identification information of the user terminal Sent after breath；5th transmitting element, it is described to notify for being sent a notification message to the user terminal The information recovered in message comprising instruction carrying.

Optionally, the mapping relation information of the recovery mark and the contextual information of base station side is connect by X2 Mouth is obtained from adjacent base station, and the adjacent base station is first base station.

Optionally, the mapping relation information of the recovery mark and the contextual information of base station side is connect using X2 Mouth is obtained by adjacent base station from the first base station, and the adjacent base station has X2 with the first base station Interface.

Optionally, the mark of recovering in the mapping relation information of the contextual information of base station side with also including Following at least one：Duration, connection are preserved needed for the contextual information of base station side and recovers the applicable area of flow Domain.

Optionally, the device that the connection recovers also includes：First releasing unit, guarantor is detected for working as The duration for depositing the contextual information of the base station side is reached when preserve needed for the contextual information of the base station side When long, the mapping relation information of the contextual information for recovering mark and base station side is discharged.

The embodiment of the present invention additionally provides a kind of user terminal, including：Second storage unit, connects for working as When receiving the RRC connections that first base station issues and hanging up signaling, preserve the RRC connections hang-up signaling with And the contextual information of subscriber terminal side；Signaling is hung up in the RRC connections to be included：The first base station is The recovery mark of the user terminal distribution, and it is following at least one：The context letter of subscriber terminal side Duration, connection are preserved needed for breath and recovers the suitable application region of flow；Second judging unit, has been performed for working as During into re-selecting cell, the information in signaling is hung up according to the RRC connections, judges whether to meet the company of initiation Connect the condition of recovery；Connection recover flow initiate unit, for when meet initiate connection recover condition when, Initiate connection and recover flow.

Optionally, the connection, which recovers flow initiation unit, includes：Transmission sub-unit, for the second base Stand and send RRC connection recovery requests, the RRC connections recovery request includes the first base station and is The recovery mark of the user terminal distribution；Receiving subelement, for receiving what second base station was sent RRC connections recover completion message, and the RRC connections recover completion message and are：Second base station according to It is described to recover mark, the user terminal corresponding with the recovery mark is found above and below base station side Generated after literary information.

Optionally, second judging unit is used for：Judge whether the cell being currently accessed belongs to the company Connect the suitable application region for recovering flow.

Optionally, second judging unit is additionally operable to：Whether belong to institute in the cell for judging to be currently accessed State before the suitable application region that connection recovers flow, judge to preserve the contextual information of the subscriber terminal side Duration preserves duration needed for whether reaching the contextual information of the subscriber terminal side.

Optionally, the user terminal also includes：Second releasing unit, for described when detecting preservation The duration of the contextual information of subscriber terminal side is preserved needed for reaching the contextual information of the subscriber terminal side During duration, the contextual information of the subscriber terminal side is discharged.

Optionally, the user terminal also includes：Contextual information storage unit, for described when preserving The duration of the contextual information of subscriber terminal side is protected needed for being not up to the contextual information of the subscriber terminal side Deposit duration, and the cell being currently accessed is when being not belonging to the connection and recovering the suitable application region of flow, preserves institute State above and below the new subscriber terminal side that the corresponding base station of the cell being currently accessed is distributed for the user terminal Literary information, and continue to preserve above and below the subscriber terminal side that the first base station is distributed for the user terminal Literary information.

Optionally, second releasing unit is additionally operable to：When not receiving the cell pair being currently accessed During the recovery mark that the base station answered is issued, the contextual information of the new subscriber terminal side is discharged；When connecing When receiving the recovery mark that the corresponding base station of cell being currently accessed is issued, the institute preserved before release State the contextual information of subscriber terminal side.

Compared with prior art, the technical scheme of the embodiment of the present invention has the advantages that：

It is user terminal configuration recovery when base station judgement migrates user terminal to Idle state from connected state Mark and subscriber terminal side preserve the duration of contextual information and/or connection recovers the suitable application region of flow, Mark will be recovered again afterwards and subscriber terminal side preserves the duration of contextual information and/or connection recovers flow Suitable application region send to user terminal.By above-mentioned configuration, can make it that user terminal is known should preserve The duration of contextual information and/or the suitable application region for recovering flow using connection, so that user is whole End is able to know whether that initiate connection recovers flow, so as to improve the success rate that connection recovers flow.

Further, base station is corresponding in the contextual information of base station side, user terminal by the user terminal Preservation duration and/or connection recover the applicable area of flow needed for recovering the contextual information of mark and base station side Domain is sent to other adjacent base stations that there is X2 interface so that adjacent base station can share above- mentioned information, expands Big connection recovers the overlay area of flow.

Because the base station in the suitable application region that connection recovers flow has learned that the recovery mark of user terminal Know and user terminal is in the contextual information of base station side, flow is recovered when user terminal is moved to connection When within suitable application region, if user terminal initiates connection recovery request, the company of user terminal can be responded Recovery request is connect, also can successful execution connection recovery flow in newly resident cell.

Brief description of the drawings

Fig. 1 is that a kind of base station configuration in the embodiment of the present invention connects the method flow diagram for recovering information；

Fig. 2 is the method flow diagram that a kind of connection in the embodiment of the present invention recovers；

Fig. 3 is that a kind of user terminal in the embodiment of the present invention connects the method flow diagram recovered；

Fig. 4 is a kind of structural representation of base station in the embodiment of the present invention；

Fig. 5 is a kind of structural representation of connection recovery device in the embodiment of the present invention；

Fig. 6 is a kind of structural representation of user terminal in the embodiment of the present invention.

Embodiment

When indicating that UE enters Idle state from connected state, base station can issue a special identifier to UE, Referred to as recover mark (Resume ID).When UE enters Idle state, base when can preserve this access network The contextual information for configured subscriber terminal side of standing, the contextual information of subscriber terminal side mainly includes peace The related configuration parameter of the related configuration parameter of full algorithm, media intervention key-course (L2), physical layer with And parameter and the GTP tunnels such as the related configuration parameter such as Radio Link Failure of wireless chain control layer (L3) Road information etc..

Base station side can preserve contextual informations of the UE in base station side, contextual informations of the UE in base station side The main configuration parameter related including Access Layer.MME can also preserve contexts of the UE in MME sides Information, contextual informations of the UE in MME sides mainly include the related configuration parameter of Non-Access Stratum and The information such as GTP tunnel.

When UE access networks again, UE can initiate connection and recover flow, and itself is indicated to base station Resume ID.Base station can identify the UE, and the base that application is preserved before according to Resume ID The service channel that the contextual information of side of standing recovers originally to set up for the UE：That is GTP tunnels of S1 interfaces Road and it is corresponding eat dishes without rice or wine on Data Radio Bearer, such UE just can reuse the service channel again Carry out data transmission.Whole process can greatly reduce signaling and open without reconfiguring contextual information again Pin.

In existing Restoration Mechanism, connection can be initiated when UE is accessed again and recovers flow, however, with The contextual information of family end side is possible to fail, or user terminal can be moved to other base stations correspondence Cell.For example, user terminal is moved to the corresponding cell in other base stations, due in other base stations not There is the contextual information for preserving UE in base station side, the connection that such user terminal is initiated, which recovers flow, just very may be used It is able to can fail.

In embodiments of the present invention, when base station judgement migrates user terminal to Idle state from connected state, The duration for recovering mark and subscriber terminal side preservation contextual information is configured for user terminal and/or is connected extensive The suitable application region of resurgent journey, afterwards again by recover mark and subscriber terminal side preserve contextual information when The suitable application region that long and/or connection recovers flow is sent to user terminal.By above-mentioned configuration, it can cause User terminal knows the duration that should preserve contextual information and/or the suitable application region for recovering flow using connection, So that user terminal is able to know whether that initiate connection recovers flow, so as to improve connection Recover the success rate of flow.

It is understandable to enable above-mentioned purpose, feature and beneficial effect of the invention to become apparent, with reference to Accompanying drawing is described in detail to the specific embodiment of the present invention.

It is the method that user terminal distributes link information, reference picture the embodiments of the invention provide a kind of base station 1, it is described in detail below by way of specific steps.

Step S101, judges whether from connected state to migrate the user terminal of access to Idle state.

In specific implementation, user terminal can set up wireless heterogeneous networks (Radio with first base station Resource Control, RRC) connection, carried out so as to realize with first base station in service interaction, progress The transmission of downlink data.

After service interaction of completion is performed, first base station can detect whether user terminal is currently still deposited In business demand, to judge whether from connected state to migrate user terminal to Idle state.

When business demand is not present in user terminal, it can adjudicate and migrate user terminal to sky from connected state Not busy state, and perform step S102；When user terminal still suffers from business demand, user terminal can be adjudicated Continue to keep connected state, without performing following steps in the embodiment of the present invention.

Step S102, preserves the user terminal in the contextual information of base station side and generates RRC connection suspensions Play signaling.

In specific implementation, when first base station judgement migrates user terminal to Idle state from connected state, First base station can preserve the contextual information of user terminal in this access procedure in base station side, and user is whole The contextual information held in base station side is mainly the related configuration parameter of Access Layer.

First base station can also be generated while contextual information of the user terminal in base station side is preserved Signaling is hung up in RRC connections.In embodiments of the present invention, RRC connections are hung up in signaling and can included：The One base station is that the recovery that user terminal is distributed is identified, and following at least one：Above and below subscriber terminal side Duration, connection are preserved needed for literary information and recovers the suitable application region of flow.The recovery mark of user terminal can be with It is the special identifier related to connection recovery function, the user terminal for supporting connection to recover function for characterizing.

In specific implementation, RRC connections are protected needed for hanging up the contextual information of the subscriber terminal side in signaling The suitable application region for depositing duration and/or connection recovery flow can also be pre-configured, and be stored in user In terminal.

That is, RRC connections, which are hung up in signaling, to be the extensive of user terminal distribution including first base station Duration is preserved needed for the contextual information of multiple mark and subscriber terminal side, can also be including first base station The recovery mark of user terminal distribution and connection recover the suitable application region of flow, and the can also be included simultaneously Recovery mark that one base station is distributed for user terminal, preservation duration needed for the contextual information of subscriber terminal side And connection recovers the suitable application region of flow.

In embodiments of the present invention, the suitable application region of connection recovery flow can include a cell or many Individual cell, i.e. connection recover the mark that the suitable application region of flow includes one or more cells, can also wrap Include one or more trace regions (Tracking Area Code, TAC).

Step S103, sends RRC connections to the user terminal and hangs up signaling.

In specific implementation, when signaling is hung up in the RRC connections that user terminal receives first base station transmission, It can perform and migrated from connected state to the operation of Idle state, and preserve RRC connections and hang up included by signaling Information.

User terminal is after RRC connections hang-up signaling is preserved, by the first base during this network insertion The contextual information for the subscriber terminal side configured of standing is preserved, and opens default timer progress timing.When Timing duration reaching when preserve duration needed for the contextual information of subscriber terminal side, you can by the user of preservation The contextual information release of end side, so as to save the memory space of user terminal.Conversely, when meter Shi Shichang is not up to needed for the contextual information of subscriber terminal side when preserving duration, can continue to preserve user The contextual information of end side.

The contextual information of subscriber terminal side includes security algorithm, media and intervenes key-course (L2) correlation The related configuration parameter of configuration parameter, physical layer and the related configuration ginseng of wireless chain control layer (L3) Number such as Radio Link Failure parameter etc..The contextual information of subscriber terminal side is with user terminal in base station side Contextual information part it is identical.

In embodiments of the present invention, user terminal is migrated to Idle state from connected state in first base station judgement When, first base station can also send to MME while step S102 is performed and deactivate message.The One base station performs step S102 and performed to the elder generation between MME transmission deactivation message not in logic Afterwards sequentially.

MME receive deactivate message after, can pair with user terminal MME sides context letter Breath carries out deactivation processing, to preserve the contextual information of MME sides.The contextual information master of MME sides To be the related configuration parameter of Non-Access Stratum and GTP tunnel information.User terminal is upper MME sides Context information is identical with the contextual information part of subscriber terminal side.

That is, the contextual information of the contextual information of subscriber terminal side, user terminal in base station side And contextual information of the user terminal in MME sides is each incomplete same.

In embodiments of the present invention, MME sides can also be included in the deactivation message that first base station is sent Duration is preserved needed for contextual information.When the MME durations for preserving the contextual information of MME sides reach When preserving duration needed for the contextual information of MME sides, it can discharge above and below saved MME sides Literary information, so as to save the memory space of MME sides.Duration is preserved needed for the contextual information of MME sides It is equal with preserving duration needed for the contextual information of subscriber terminal side.

After MME receives the deactivation message of first base station transmission, you can preserve above and below MME sides Literary information, and deactivate confirmation message to first base station feedback.First base station is receiving MME transmissions Deactivate after confirmation message, then perform step S103.

In actual applications, user terminal is likely to be at motion state.In moving process, user terminal The overlay area of other base stations is probably moved to, the overlay area of other base stations, which is likely to be at, connects extensive In the suitable application region of resurgent journey.If other base stations in the suitable application region for recovering flow in connection are not known The user terminal recovery mark and the user terminal base station side contextual information, then when with When family terminal initiates connection recovery flow in the overlay area of other base stations, it is impossible to successfully realize that connection is extensive Resurgent journey.

For example, user terminal is moved to after the overlay area of the second base station from the overlay area of first base station, If user terminal, which initiates connection, recovers flow, because the second base station is not aware that the recovery of user terminal in advance Mark and user terminal base station side contextual information, therefore the second base station receive user terminal hair After the connection recovery request sent, it is impossible to respond the connection recovery request of user terminal, also just can not successfully hold Row connection recovers flow.

, can in the suitable application region of flow to allow user terminal to recover in connection in specific implementation Successful execution connection recovers flow, and first base station can be by the recovery mark and user terminal of user terminal Adjacent base station is sent in the contextual information of base station side, adjacent base station refers to that there is X2 with first base station connects The neighbor base station of mouth.

In embodiments of the present invention, first base station can send X2 interface signaling to adjacent base station, in X2 The recovery mark and user terminal that user terminal can be included in interface signaling are believed in the context of base station side Breath, so that adjacent base station can know the recovery mark and user terminal of user terminal in base Stand the contextual information of side.It should be noted that X2 interface signaling described below is i.e. comprising described User terminal is in the contextual information of base station side, the signaling of the corresponding recovery mark of the user terminal.

It can also include preserving duration needed for the contextual information of base station side in X2 interface signaling, can also wrap The suitable application region that connection recovers flow is included, can also preservation needed for the contextual information including base station side simultaneously Duration and connection recover the suitable application region of flow.Duration is preserved needed for the contextual information of base station side with using When being preserved needed for the contextual information that duration and MME sides are preserved needed for the contextual information of family end side Length can be equal.

Adjacent base station is after the X2 interface signaling of first base station transmission is received, you can therefrom obtains and preserves base Stand side context information base station side contextual information needed for preserve duration and/or connection recovers the suitable of flow Use region.When the duration that adjacent base station detects preservation X2 interface signaling reaches the contextual information of base station side During required preservation duration, you can by the X2 interface signaling received (i.e. comprising the user terminal in base station The corresponding X2 interface signaling for recovering mark of the contextual information of side, the user terminal) release, so that The memory space of itself can be saved.

Adjacent base station, can also be to first base station feeding back confirmation message after X2 interface signaling is received.The One base station is after the confirmation message of adjacent base station feedback is received, you can know that adjacent base station has been saved Contextual information of the recovery mark and user terminal of user terminal in base station side.

By way of this " shared ", first base station is whole by the recovery mark of user terminal and user The contextual information in base station side is held to be sent to adjacent base station.When user terminal is moved to these adjacent base stations Overlay area in when, if user terminal initiate connection recover flow, to these adjacent base stations send RRC Recovery request is connected, includes the recovery mark of user terminal in RRC connections recovery request.Adjacent base station When receiving RRC connection recovery requests, you can therefrom obtain the recovery mark of user terminal.Due to phase The recovery mark and user terminal that user terminal has been saved in adjacent base station are believed in the context of base station side Breath, therefore adjacent base station can respond the connection recovery request of user terminal, so as to successfully realize that connection is extensive Resurgent journey.

In actual applications, the suitable application region of connection recovery flow may be larger, such as connection recovers flow Suitable application region can include one or more TAC.And first base station only may recover flow with being connected There is X2 interface in the portion of base stations in suitable application region, and X2 interface is not present with the base station of other parts. These base stations in contextual information suitable application region that X2 interface is not present with first base station can not just be obtained Know the contextual information of recovery mark and user terminal in base station side of user terminal.

In the embodiment of the present invention, for above-mentioned situation, when the adjacent base station that there is X2 interface with first base station Receive after X2 interface signaling, whether included and itself phase in the suitable application region that flow can be recovered from connection Adjacent base station, the base station adjacent with itself does not include first base station.When connection recovers the applicable area of flow When including the base station adjacent with itself in domain, X2 interface signaling can be relayed to the base adjacent with itself Stand.By way of forwarding, it can make it that whole connection recovers all base stations in the suitable application region of flow The X2 interface signaling of first base station transmission can be got.Now, user terminal recovers flow in connection Suitable application region in, can complete connection recover flow, i.e., connection recover flow suitable application region significantly Increase.

In actual applications, after user terminal is migrated to Idle state from connected state, it can be linked into again The administrative cell of first base station.After the completion of the business re-executed, user terminal is above and below base station side Literary information may produce change.Now, first base station can be by new user terminal in the upper of base station side Context information is sent to adjacent base station by X2 interface signaling, to inform that user terminal exists described in adjacent base station The contextual information of base station side is changed.

Correspondingly, when first base station determines that user terminal is no longer applicable recovery flow, X2 can also be passed through Interface signaling notifies that adjacent base station discharges contextual information of the user terminal in base station side, so as to save Save the storage resource of adjacent base station.

The idiographic flow for performing connection recovery process to user terminal below is illustrated.

Reference picture 2, gives the method that a kind of connection in the embodiment of the present invention recovers, below by way of specific Step is described in detail.

Step S201, when receiving the RRC connection recovery requests of user terminal transmission, from the RRC The corresponding recovery mark of the user terminal is obtained in connection recovery request.

In specific implementation, the user terminal is corresponding to be recovered before mark can be the user terminal The corresponding first base station distribution of cell of access.

First base station is that the flow that user terminal distribution recovers to identify is as follows：User terminal accesses first base station During jurisdiction district, can be set up with first base station wireless heterogeneous networks (Radio Resource Control, RRC) connect.After service interaction of completion is performed, first base station detects user terminal and is not present During business demand, it can adjudicate and migrate user terminal to Idle state from connected state, be sent to user terminal Signaling is hung up in RRC connections, and it is user terminal point that can include first base station in signaling is hung up in RRC connections The recovery mark matched somebody with somebody.

, can be with initiating random access procedure when user terminal has the business demand with the second base station.With Family terminal sends RRC connection recovery requests in initiating random access procedure to the second base station.In RRC It is that the recovery that user terminal is distributed is identified to connect and can include in recovery request first base station.

Second base station is after the RRC connection recovery requests of user terminal transmission are received, you can therefrom obtain User terminal is corresponding to recover mark, and performs step S202.

Step S202, recovers to identify according to described, believes from the context of the recovery mark and base station side of storage Contextual information of the corresponding user terminal in base station side is searched in the mapping relation information of breath.

The context for recovering mark and base station side can be previously stored with specific implementation, in the second base station The mapping relation information of information, can be according to the recovery of user terminal mark in default mapping relation information The middle contextual information for searching the user terminal in base station side.

In embodiments of the present invention, the contextual information of the recovery mark and base station side that are stored in the second base station Mapping relation information can be directly from first base station obtain.Knowable to from the above embodiment of the present invention, First base station can send X2 interface signaling by X2 interface to adjacent base station.In X2 interface signaling User terminal can be included recovers the contextual information of mark, user terminal in base station side, and base station Duration is preserved needed for the contextual information of side and/or connection recovers the suitable application region of flow.

Second base station can be the adjacent base station of first base station, and there is X2 interface with first base station.Second Base station is after the X2 interface signaling of first base station transmission is received, you can know the recovery of the user terminal The mapping relation information of the contextual information of mark and base station side.

The recovery mark and the mapping relation information of the contextual information of base station side stored in second base station may be used also To be obtained indirectly from first base station.Second base station can be communicated by X2 interface with adjacent base station, To obtain X2 interface signaling.The X2 interface signaling that adjacent base station is got can be that first base station is directly sent out It is sending or indirectly from first base station obtain.

For example, the adjacent base station that there is X2 interface with first base station is the 3rd base station, exist with the 3rd base station The adjacent base station of X2 interface is the second base station, can not direct communication between first base station and the second base station.Then First base station to the 3rd base station send X2 interface signaling, the 3rd base station after X2 interface signaling is received, X2 interface signaling is sent to the second base station again.

It should be noted that the overlay area of the second base station should be the suitable application region for recovering flow in connection It is interior.That is, only recovering when the overlay area of the second base station is in connection in the suitable application region of flow When, the second base station can just receive the X2 interface signaling.Otherwise, X2 interface is not receive institute X2 interface signaling is stated, the context of the recovery mark and base station side of the user terminal would not be also preserved Mapping relation information.

By way of above-mentioned forwarding, owning in the suitable application region for recovering flow in connection can be caused Base station can get X2 interface signaling.

Second base station get user terminal recovery identify after, you can stored recovery mark with The corresponding user terminal of mark that recovers is searched in the mapping relation information of the contextual information of base station side to exist The contextual information of base station side.

In embodiments of the present invention, the second base station can start timer after X2 interface signaling is received Carry out timing.When preserving duration needed for timing duration reaches the contextual information of base station side, you can will protect The recovery mark and the mapping relations of the contextual information of base station side deposited discharge, and now the second base station can be by phase The contextual information answered is deleted, so as to discharge the part caching of the second base station.

Step S203, after contextual information of the user terminal in base station side is found, is used to described Family terminal sends RRC connections and recovers completion message.

In specific implementation, when the second base station is in the recovery mark and the contextual information of base station side of storage In mapping relation information, the corresponding user terminal of recovery mark with the user terminal is found in base station After the contextual information of side, you can send RRC connections to the user terminal and recover completion message.Now, The connection of Access Layer recovers flow and completed.

, it is necessary to which the connection for carrying out Non-Access Stratum recovers flow after the completion of the connection of Access Layer recovers.

Step S204, sends contextual information activation to MME and asks.

In embodiments of the present invention, can be with the contextual information activation request that the second base station is sent to MME Carry the identification information of user terminal.

Step S205, receives the contextual information activation confirmation message that the MME is sent.

In specific implementation, asked when MME is activated in the contextual information for receiving the transmission of the second base station Afterwards, the identification information of user terminal, root are obtained in the contextual information activation request sent from the second base station The contextual information that can search whether to have with the user terminal in MME sides according to the identification information. MME is being found with the user terminal after the contextual information of MME sides, is sent to the second base station Contextual information activates confirmation message.

Second base station shows non-access after the contextual information activation confirmation message of MME transmissions is received Layer connection recovers flow and completed.

Step S206, sends a notification message to the user terminal, is held in the notification message comprising instruction Carry the information recovered.

After the completion of step S201~step S205 is performed, Access Layer recovers flow and Non-Access Stratum recovers Flow has been completed, and the bearer channel between user terminal and the second base station, the second base station and MME is Get through, user terminal, which can succeed, carry out service interaction with the second base station, and whole connection recovery process is completed. Now, the second base station can send a notification message to user terminal, and to inform user terminal, currently carrying is logical The information that road has been got through, namely the information that carrying has recovered.

As can be seen here, base station is corresponding extensive in the contextual information of base station side, user terminal by user terminal Duration is preserved needed for the contextual information of multiple mark and base station side and/or connection recovers the suitable application region of flow It is sent to other adjacent base stations that there is X2 interface so that adjacent base station can share above- mentioned information, expands Connection recovers the overlay area of flow.

The embodiment of the present invention additionally provides the implementation method that a kind of user terminal connection recovers function, reference picture 3, illustrated below in conjunction with above-mentioned steps S101~step S103 and step S201~step S206.

Step S301, when receiving the RRC connections hang-up signaling that first base station is issued, preserves described The contextual information of signaling and subscriber terminal side is hung up in RRC connections.

, can be whole to user when first base station judges that user terminal is transmitted without business in specific implementation End issues RRC connections and hangs up signaling, is migrated with indicating user terminal from connected state to Idle state.User is whole End is when receiving RRC connections hang-up signaling, you can preserves RRC connections and hangs up signaling, and preserves use The contextual information of family end side.

The contextual information of subscriber terminal side includes security algorithm, media and intervenes key-course (L2) correlation The related configuration parameter of configuration parameter, physical layer and the related configuration ginseng of wireless chain control layer (L3) Number such as Radio Link Failure parameter etc..

Step S302, when performing completion re-selecting cell, the letter in signaling is hung up according to the RRC connections Breath, judges whether to meet the condition that connection recovers of initiating.

In specific implementation, user terminal can perform cell selection or cell when in Idle state Reselection operation.After completion re-selecting cell is performed, the corresponding base station of cell being currently accessed is the second base station. Second base station can be same base station with first base station, or different base stations.

User terminal obtains the contextual information for preserving subscriber terminal side in can hanging up signaling from RRC connections Subscriber terminal side contextual information needed for preserve duration and/or connection recover flow suitable application region.With Family terminal may determine that whether the cell being currently accessed belongs to the suitable application region that connection recovers flow.

When the cell that user terminal is currently accessed, which belongs to connection, recovers the suitable application region of flow, judge to meet The condition that connection recovers is initiated, step S303 is performed；When the cell that user terminal is currently accessed is not belonging to connect When connecing the suitable application region for recovering flow, judge to be unsatisfactory for initiating the condition that connection recovers, user terminal is forbidden Initiate connection and recover flow.

In embodiments of the present invention, judging whether the cell that user terminal is currently accessed belongs to connection recovery Before the suitable application region of flow, it can also include：Judge that user terminal preserves the upper of the subscriber terminal side The duration of context information preserves duration needed for whether reaching the contextual information of subscriber terminal side.

When the duration that user terminal preserves the contextual information of subscriber terminal side reaches above and below subscriber terminal side When preserving duration needed for literary information, user terminal discharges the contextual information of user terminal, now judges nothing Method, which is met, initiates connection recovery condition；When user terminal preserves the duration of the contextual information of subscriber terminal side When not up to preserving duration needed for the contextual information of subscriber terminal side, then go to judge that user terminal currently connects Whether the cell entered belongs to the suitable application region that connection recovers flow.

Step S303, when meeting the condition for initiating connection recovery, initiates connection and recovers flow.

In embodiments of the present invention, connection recovery flow is initiated to may comprise steps of：

1) RRC connection recovery requests are sent to the second base station；

2) the RRC connections recovery completion message that the second base station is sent is received.

In embodiments of the present invention, first base station can be included in RRC connections recovery request is user terminal The recovery mark of distribution.The X2 interface signaling of first base station transmission, i.e., the can be preserved in second base station Recovery mark and the mapping of the contextual information of base station side of the user terminal are previously stored with two base stations Relation information, therefore can be searched according to the recovery of user terminal mark in default mapping relation information Contextual information of the user terminal in base station side.

When the second base station lookups to the corresponding user terminal of recovery mark with the user terminal in base station side Contextual information after, you can send RRC connections recovery completion message to the user terminal.

For example, three administrative cells of the second base station belong to the suitable application region that connection recovers flow, user , can successful execution connection recovery when terminal resides in any of three administrative cells of the second base station Flow.

In actual applications, when the duration for the contextual information that subscriber terminal side is preserved in user terminal does not reach When preserving duration needed for the contextual information of subscriber terminal side, it is understood that there may be what user terminal was currently accessed Cell is not belonging to the situation that connection recovers the suitable application region of flow.When there is business demand in user terminal, User terminal can set up RRC with the second base station and be connected, and set up Deta bearer to transmit data, now, Second base station is the contextual information that user terminal configures new subscriber terminal side, new subscriber terminal side The contextual information of subscriber terminal side of the contextual information from having preserved before is different.Now user terminal The contextual information preserved before the contextual information preserved before, or continuation reservation can be deleted.

After the completion of this Business Processing, user terminal reenters Idle state.If reentering sky , then can be with the subscriber terminal side of release new when not receiving the recovery mark of the second base station transmission during not busy state Contextual information.If when reentering Idle state, when receiving the recovery mark of the second base station transmission, The contextual information of saved subscriber terminal side before can then discharging, preserves new user terminal Contextual information.

As can be seen here, because the corresponding base station of suitable application region that connection recovers flow has learned that user terminal Recovery mark and user terminal base station side contextual information, when user terminal be moved to connection it is extensive When within the suitable application region of resurgent journey, if user terminal initiates connection recovery request, user can be responded The connection recovery request of terminal, also can successful execution connection recovery flow in newly resident cell.

Reference picture 4, gives a kind of base station 40 in the embodiment of the present invention, including：First judging unit 401st, the first storage unit 402, the transmitting element 404 of generation unit 403 and first, wherein：

First judging unit 401, for judging whether from connected state to migrate the user terminal of access to the free time State；

First storage unit 402, for moving the user terminal from connected state when judging unit judgement When moving to Idle state, contextual information of the user terminal in base station side is preserved；

Generation unit 403, for when the judging unit judgement by the user terminal from connected state migrate to During Idle state, signaling is hung up in generation RRC connections, and signaling is hung up in the RRC connections to be included：To be described The recovery mark of user terminal distribution, and it is following at least one：The contextual information institute of subscriber terminal side Duration, connection need to be preserved and recover the suitable application region of flow；

First transmitting element 404, sends RRC connections to the user terminal and hangs up signaling.

In specific implementation, the base station 40 can also include：Second transmitting element (not shown in Fig. 4), Message is deactivated for being sent to MME, indicates that the MME preserves the user terminal in MME sides Contextual information, the deactivation message includes preserving duration needed for the contextual informations of MME sides, Duration and the contextual information institute of the MME sides are preserved needed for the contextual information of the subscriber terminal side Duration need to be preserved equal.

In specific implementation, the base station can also include the first receiving unit (not shown in Fig. 4), use In the deactivation confirmation message for receiving the MME feedbacks.

In specific implementation, the base station 40 can also include：3rd transmitting element (not shown in Fig. 4), Suitable for sending X2 interface signaling, the X2 interface signaling to itself there is the adjacent base station of X2 interface Include：The user terminal is in the contextual information of base station side, the user terminal is corresponding recovers mark Know, and it is following at least one：Duration, connection are preserved needed for the contextual information of base station side and recovers flow Suitable application region, the upper of duration and the subscriber terminal side is preserved needed for the contextual information of the base station side Duration is preserved needed for context information equal.

It is described adjacent after the adjacent base station receives the X2 interface signaling in specific implementation Base station sends the X2 interface signaling to the adjacent base station that there is X2 interface with the adjacent base station, institute Stating the adjacent base station that there is X2 interface with the adjacent base station does not include the base station.

Reference picture 5, gives the device 50 that a kind of connection in the embodiment of the present invention recovers, including：Obtain Take unit 501, searching unit 502, the 4th transmitting element 503, the second receiving unit 504 and the 5th Transmitting element 505, wherein：

Acquiring unit 501, for being obtained from the RRC connection recovery requests of the user terminal transmission received The corresponding recovery mark of the user terminal is taken, the user terminal is corresponding to be recovered to be designated the user The corresponding first base station distribution of cell accessed before terminal；

Searching unit 502, for recovering to identify according to described, is identified upper with base station side from the recovery of storage The context that the corresponding user terminal is searched in the mapping relation information of context information in base station side is believed Breath, and the user terminal is being found after the contextual information of base station side, sent out to the user terminal RRC connections are sent to recover completion message；

4th transmitting element 503, is asked, the context for sending context message activation to MME Message activation request includes the identification information of the user terminal；

Second receiving unit 504, for receiving the context activation confirmation message that the MME is sent, institute It is that the MME is found according to the identification information of the user terminal to state context activation confirmation message Sent after the contextual information of corresponding MME sides；

5th transmitting element 505, for being sent a notification message to the user terminal, in the notification message The information recovered comprising instruction carrying.

In specific implementation, the mapping relation information of the contextual information for recovering mark and base station side leads to Cross X2 interface to obtain from adjacent base station, the adjacent base station is first base station.

In specific implementation, the mapping relation information of the recovery mark and the contextual information of base station side is adopted Obtained with X2 interface by adjacent base station from the first base station, the adjacent base station and the first base station There is X2 interface.

In specific implementation, in the mapping relation information of the contextual information for recovering mark and base station side Also include following at least one：Duration, connection are preserved needed for the contextual information of base station side and recovers flow Suitable application region.

In specific implementation, the device that the connection recovers can also include：First releasing unit (Fig. 5 Not shown in), for reaching the base station when the duration for detecting the contextual information for preserving the base station side When preserving duration needed for the contextual information of side, the contextual information for recovering mark and base station side is discharged Mapping relation information.

Reference picture 6, gives a kind of user terminal in the embodiment of the present invention, including：Second storage unit 601st, the second judging unit 602 and connection recover flow initiation unit 603, wherein：

Second storage unit 601, for when receiving the RRC connections that first base station issues and hanging up signaling, Preserve the contextual information that signaling and subscriber terminal side are hung up in the RRC connections；The RRC connections Hanging up signaling includes：The first base station is the recovery mark that the user terminal is distributed, and below extremely Few one kind：Duration, connection are preserved needed for the contextual information of subscriber terminal side and recovers the suitable application region of flow；

Second judging unit 602, for when performing completion re-selecting cell, according to the RRC connection suspensions The information in signaling is played, judges whether to meet the condition that connection recovers of initiating；

Connection recovers flow initiation unit 603, for when meeting the condition that initiation connection recovers, initiation to connect Connect recovery flow.

In specific implementation, the connection, which recovers flow, which initiates unit 603, to include：Transmission sub-unit, For sending RRC connection recovery requests to the second base station, the RRC connections recovery request includes institute State the recovery mark that first base station is distributed for the user terminal；Receiving subelement, for receiving described The RRC connections that two base stations are sent recover completion message, and the RRC connections recover completion message and are：Institute State the second base station to recover to identify according to described, find the user terminal corresponding with the recovery mark Generated after the contextual information of base station side.

In specific implementation, second judging unit 602 can be used for：Judge the cell being currently accessed Whether suitable application region that the connection recover flow is belonged to.

In specific implementation, second judging unit 602 can be also used for：Judging what is be currently accessed Whether cell belongs to before the suitable application region of the connection recovery flow, judges to preserve the subscriber terminal side Contextual information duration whether reach the contextual information of the subscriber terminal side needed for preserve duration.

In specific implementation, the user terminal can also include：Second releasing unit (does not show in Fig. 6 Go out), for reaching that the user is whole when the duration for detecting the contextual information for preserving the subscriber terminal side When preserving duration needed for the contextual information of side, the contextual information of the subscriber terminal side is discharged.

In specific implementation, the user terminal can also include：Contextual information storage unit (Fig. 6 Not shown in), for being not up to the user when the duration for the contextual information for preserving the subscriber terminal side Duration is preserved needed for the contextual information of end side, and the cell being currently accessed is not belonging to the connection and recovered During the suitable application region of flow, the corresponding base station of cell being currently accessed described in preservation is the user terminal point The contextual information for the new subscriber terminal side matched somebody with somebody, and it is user end to continue to preserve the first base station Hold the contextual information of the subscriber terminal side of distribution.

In specific implementation, second releasing unit can be also used for：Described currently connect when not receiving During the recovery mark that the corresponding base station of cell entered is issued, the context of the new subscriber terminal side is discharged Information；When receiving the recovery mark that the corresponding base station of cell being currently accessed is issued, it is discharged The contextual information of the subscriber terminal side of preceding preservation.

One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment Rapid to can be by program to instruct the hardware of correlation to complete, the program can be stored in a computer can Read in storage medium, storage medium can include：ROM, RAM, disk or CD etc..

Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, Without departing from the spirit and scope of the present invention, it can make various changes or modifications, therefore the guarantor of the present invention Shield scope should be defined by claim limited range.

Claims (36)

1. a kind of method that base station configuration connection recovers information, it is characterised in that including：

Judge whether from connected state to migrate the user terminal of access to Idle state；

When judgement migrates the user terminal to Idle state from connected state, the user terminal is preserved in base station The contextual information of side simultaneously generates RRC connections hang-up signaling, and signaling is hung up in the RRC connections to be included： The recovery mark distributed for the user terminal, and it is following at least one：The context of subscriber terminal side Duration, connection are preserved needed for information and recovers the suitable application region of flow；

RRC connections are sent to the user terminal and hang up signaling, to control the user terminal to be migrated from connected state To Idle state.

2. the method that configuration connection in base station as claimed in claim 1 recovers information, it is characterised in that in judgement The user terminal is migrated to during Idle state from connected state also to be included：

Sent to MME and deactivate message, indicate that the MME preserves the user terminal in the upper of MME sides Context information, the deactivation message includes preserving duration needed for the contextual information of MME sides, described Duration is preserved needed for the contextual information of subscriber terminal side with being protected needed for the contextual information of the MME sides Deposit duration equal.

3. the method that base station as claimed in claim 2 configuration connection recovers information, it is characterised in that to institute Stating user terminal and sending before signaling is hung up in RRC connections also includes：Receive deactivating for the MME feedbacks Confirmation message living.

4. the method that the base station configuration connection as described in claim 1 or 3 recovers information, it is characterised in that also Including：X2 interface signaling, the X2 interface letter are sent to itself there is the adjacent base station of X2 interface Order includes：The user terminal is in the contextual information of base station side, the user terminal is corresponding recovers Mark, and it is following at least one：Preservation duration, the connection are extensive needed for the contextual information of base station side Duration and the user terminal are preserved needed for the suitable application region of resurgent journey, the contextual information of the base station side Duration is preserved needed for the contextual information of side equal.

5. the method that configuration connection in base station as claimed in claim 4 recovers information, it is characterised in that also include： After the adjacent base station receives the X2 interface signaling, the adjacent base station is by the X2 interface Signaling is sent to the adjacent base station that there is X2 interface with the adjacent base station, described to be deposited with the adjacent base station Do not include the base station in the adjacent base station of X2 interface.

6. the method that configuration connection in base station as claimed in claim 1 recovers information, it is characterised in that the company Connecing the suitable application region of recovery flow includes：One or more cells, one or more trace regions codes.

7. a kind of connect the method recovered, it is characterised in that including：

When receiving the RRC connection recovery requests of user terminal transmission, from the RRC connections recovery request Middle to obtain that the user terminal is corresponding to recover mark, the corresponding recovery of the user terminal is designated described The corresponding first base station distribution of cell accessed before user terminal；

Recover to identify according to described, believe from the recovery mark and the mapping relations of the contextual information of base station side of storage Contextual information of the corresponding user terminal in base station side is searched in breath, and is finding the user Terminal sends RRC connections after the contextual information of base station side, to the user terminal and recovers completion message；

Context message activation request is sent to MME, the context message activation request includes the user The identification information of terminal；

The context activation confirmation message that the MME is sent is received, the context activation confirmation message is described MME according to the identification information of the user terminal after the contextual information of corresponding MME sides is found Send；

Sent a notification message to the user terminal, the information recovered in the notification message comprising instruction carrying.

8. the method that connection as claimed in claim 7 recovers, it is characterised in that the user terminal is corresponding Recovery is designated：First base station judgement by the user terminal from connected state migrate to Idle state when, The user terminal is distributed.

9. the method that connection as claimed in claim 8 recovers, it is characterised in that the recovery mark and base station The mapping relation information of the contextual information of side is obtained by X2 interface from adjacent base station, the adjacent base station For first base station.

10. the method that connection as claimed in claim 8 recovers, it is characterised in that the recovery mark and base station The mapping relation information of the contextual information of side is using X2 interface by adjacent base station from the first base station Obtain, the adjacent base station has X2 interface with the first base station.

11. the method that the connection as described in claim 9 or 10 recovers, it is characterised in that the recovery mark With also including following at least one in the mapping relation information of the contextual information of base station side：Base station side it is upper Duration, connection are preserved needed for context information and recovers the suitable application region of flow.

12. the method that connection as claimed in claim 11 recovers, it is characterised in that also include：When detecting The duration for preserving the contextual information of the base station side reaches preservation needed for the contextual information of the base station side During duration, the mapping relation information of the contextual information for recovering mark and base station side is discharged.

13. a kind of method that user terminal connection recovers, it is characterised in that including：

When receiving the RRC connections hang-up signaling that first base station is issued, preserve the RRC connections and hang up letter Order and the contextual information of subscriber terminal side；Signaling is hung up in the RRC connections to be included：First base The recovery distributed for the user terminal of standing is identified, and following at least one：Above and below subscriber terminal side Duration, connection are preserved needed for literary information and recovers the suitable application region of flow；

When performing completion re-selecting cell, the information in signaling is hung up according to the RRC connections, judged whether full Foot initiates the condition that connection recovers；

When meeting the condition for initiating connection recovery, initiate connection and recover flow.

14. the method that user terminal connection as claimed in claim 13 recovers, it is characterised in that the initiation Recovering flow includes：

RRC connection recovery requests are sent to the second base station, the RRC connections recovery request includes described the One base station is the recovery mark that the user terminal is distributed；

The RRC connections recovery completion message that second base station is sent is received, the RRC connections recover to complete Message is：Second base station recovers to identify according to described, finds institute corresponding with the recovery mark State what user terminal was generated after the contextual information of base station side.

15. the method that user terminal connection as claimed in claim 13 recovers, it is characterised in that the judgement Whether the condition of satisfaction initiation recovery flow includes：

Judge whether the cell being currently accessed belongs to the suitable application region that the connection recovers flow.

16. the method that user terminal connection as claimed in claim 15 recovers, it is characterised in that judging to work as Whether the cell of preceding access, which belongs to the connection, is recovered also to include before the suitable application region of flow：Judge to preserve Whether the duration of the contextual information of the subscriber terminal side reaches the contextual information of the subscriber terminal side Required preservation duration.

17. the method that user terminal connection as claimed in claim 13 recovers, it is characterised in that also include： When the duration for detecting the contextual information for preserving the subscriber terminal side reaches the upper of the subscriber terminal side When preserving duration needed for context information, the contextual information of the subscriber terminal side is discharged.

18. the method that user terminal connection as claimed in claim 13 recovers, it is characterised in that also include： When the duration for the contextual information for preserving the subscriber terminal side is not up to the context of the subscriber terminal side Duration is preserved needed for information, and the cell being currently accessed is not belonging to the suitable application region that the connection recovers flow When, if there is service request, RRC companies are set up in base station corresponding with the cell being currently accessed again Connect；

The corresponding base station of cell being currently accessed described in receiving is the new subscriber terminal side that the user terminal is distributed Contextual information, with base station corresponding with the cell being currently accessed carry out service interaction；

Continue to preserve contextual information of the first base station for the subscriber terminal side of user terminal distribution.

19. the method that user terminal as claimed in claim 18 connection recovers, it is characterised in that with it is described The corresponding base station of cell being currently accessed also includes after carrying out service interaction：

When not receiving the recovery mark that the corresponding base station of cell being currently accessed is issued, discharge described new Subscriber terminal side contextual information；

When receiving the recovery mark that the corresponding base station of cell being currently accessed is issued, preserved before release The subscriber terminal side contextual information, preserve the contextual information of the new subscriber terminal side.

20. a kind of base station, it is characterised in that including：

First judging unit, for judging whether from connected state to migrate the user terminal of access to Idle state；

First storage unit, for migrating the user terminal to sky from connected state when judging unit judgement During not busy state, contextual information of the user terminal in base station side is preserved；

Generation unit, for migrating the user terminal to Idle state from connected state when judging unit judgement When, signaling is hung up in generation RRC connections, and signaling is hung up in the RRC connections to be included：It is whole for the user The recovery mark of end distribution, and it is following at least one：Preserved needed for the contextual information of subscriber terminal side Duration, connection recover the suitable application region of flow；

First transmitting element, signaling is hung up for sending RRC connections to the user terminal.

21. base station as claimed in claim 20, it is characterised in that also include：Second transmitting element, is used for Sent to MME and deactivate message, indicate that the MME preserves the user terminal in the upper of MME sides Context information, the deactivation message includes preserving duration needed for the contextual information of MME sides, described Duration is preserved needed for the contextual information of subscriber terminal side with being protected needed for the contextual information of the MME sides Deposit duration equal.

22. base station as claimed in claim 21, it is characterised in that also include：First receiving unit, is used for Receive the deactivation confirmation message of the MME feedbacks.

23. the base station as described in claim 21 or 22, it is characterised in that also include：3rd transmitting element, Suitable for sending X2 interface signaling, the X2 interface signaling to itself there is the adjacent base station of X2 interface Include：The user terminal is in the contextual information of base station side, the user terminal is corresponding recovers mark Know, and it is following at least one：Duration, the connection is preserved needed for the contextual information of base station side to recover Duration and the subscriber terminal side are preserved needed for the suitable application region of flow, the contextual information of the base station side Contextual information needed for preserve duration it is equal.

24. base station as claimed in claim 23, it is characterised in that when the adjacent base station receives the X2 After interface signaling, the adjacent base station, which sends the X2 interface signaling to the adjacent base station, to be present The adjacent base station of X2 interface, the adjacent base station that there is X2 interface with the adjacent base station does not include institute State base station.

25. a kind of connect the device recovered, it is characterised in that including：

Acquiring unit, for obtaining the use from the RRC connection recovery requests of the user terminal transmission received Family terminal is corresponding to recover mark, and the user terminal is corresponding to be recovered to be designated before the user terminal The corresponding first base station distribution of cell of access；

Searching unit, for recovering to identify according to described, believes from the context of the recovery mark and base station side of storage Search contextual information of the corresponding user terminal in base station side in the mapping relation information of breath, and The user terminal is found after the contextual information of base station side, sending RRC to the user terminal connects Connect recovery completion message；

4th transmitting element, is asked for sending context message activation to MME, the context message activation Request includes the identification information of the user terminal；

Second receiving unit, for receiving the context activation confirmation message that the MME is sent, the context Activation confirmation message be the MME found according to the identification information of the user terminal it is corresponding Sent after the contextual information of MME sides；

5th transmitting element, for being sent a notification message to the user terminal, includes finger in the notification message Show the information that carrying has recovered.

26. the device that connection as claimed in claim 25 recovers, it is characterised in that the recovery mark and base Stand side contextual information mapping relation information by X2 interface from adjacent base station obtain, the adjacent base Stand as first base station.

27. the device that connection as claimed in claim 25 recovers, it is characterised in that the recovery mark and base Stand side contextual information mapping relation information using X2 interface by adjacent base station from first base Stand acquisition, the adjacent base station has X2 interface with the first base station.

28. the device that the connection as described in claim 26 or 27 recovers, it is characterised in that the recovery mark With also including following at least one in the mapping relation information of the contextual information of base station side：Base station side it is upper Duration, connection are preserved needed for context information and recovers the suitable application region of flow.

29. the device that connection as claimed in claim 28 recovers, it is characterised in that also include：First release Unit, for reaching the base station side when the duration for detecting the contextual information for preserving the base station side When preserving duration needed for contextual information, the release recovery mark is reflected with the contextual information of base station side Penetrate relation information.

30. a kind of user terminal, it is characterised in that including：

Second storage unit, for when receiving the RRC connections hang-up signaling that first base station is issued, preserving institute State the contextual information that signaling and subscriber terminal side are hung up in RRC connections；Letter is hung up in the RRC connections Order includes：The first base station is that the recovery that the user terminal is distributed is identified, and following at least one： Duration, connection are preserved needed for the contextual information of subscriber terminal side and recovers the suitable application region of flow；

Second judging unit, for when performing completion re-selecting cell, being hung up according to the RRC connections in signaling Information, judge whether meet initiate connection recover condition；

Connection recovers flow and initiates unit, for when meeting the condition that initiation connection recovers, initiating connection recovery Flow.

31. user terminal as claimed in claim 30, it is characterised in that the connection recovers flow and initiates single Member includes：Transmission sub-unit, for sending RRC connection recovery requests, the RRC to the second base station Connection recovery request includes the recovery mark that the first base station is distributed for the user terminal；Receive son Unit, recovers completion message, the RRC connects for receiving the RRC connections that second base station is sent Connecing recovery completion message is：Second base station recovers to identify according to described, finds and recovers to mark with described Know what the corresponding user terminal was generated after the contextual information of base station side.

32. user terminal as claimed in claim 30, it is characterised in that second judging unit is used for： Judge whether the cell being currently accessed belongs to the suitable application region that the connection recovers flow.

33. user terminal as claimed in claim 32, it is characterised in that second judging unit is additionally operable to： Before whether the cell for judging to be currently accessed belongs to the suitable application region of the connection recovery flow, judge to protect Whether the duration for depositing the contextual information of the subscriber terminal side reaches the context letter of the subscriber terminal side Duration is preserved needed for breath.

34. user terminal as claimed in claim 30, it is characterised in that also include：Second releasing unit, For reaching the subscriber terminal side when the duration for detecting the contextual information for preserving the subscriber terminal side Contextual information needed for when preserving duration, discharge the contextual information of the subscriber terminal side.

35. user terminal as claimed in claim 34, it is characterised in that also include：Contextual information is preserved Unit, for being not up to the user terminal when the duration for the contextual information for preserving the subscriber terminal side Duration is preserved needed for the contextual information of side, and the cell being currently accessed is not belonging to the connection and recovers flow Suitable application region when, it is user terminal distribution to preserve the corresponding base station of cell being currently accessed The contextual information of new subscriber terminal side, and it is the user terminal point to continue to preserve the first base station The contextual information for the subscriber terminal side matched somebody with somebody.

36. user terminal as claimed in claim 35, it is characterised in that second releasing unit is additionally operable to： When not receiving the recovery mark that the corresponding base station of cell being currently accessed is issued, discharge described new Subscriber terminal side contextual information；Issued when receiving the corresponding base station of cell being currently accessed Recovery mark when, the contextual information of the subscriber terminal side preserved before release.