CN102340886A - RRC (radio resource control) connection reestablishment method, device and system - Google Patents

RRC (radio resource control) connection reestablishment method, device and system Download PDF

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CN102340886A
CN102340886A CN2010102363726A CN201010236372A CN102340886A CN 102340886 A CN102340886 A CN 102340886A CN 2010102363726 A CN2010102363726 A CN 2010102363726A CN 201010236372 A CN201010236372 A CN 201010236372A CN 102340886 A CN102340886 A CN 102340886A
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rrc
primitive
rrc connection
establishment
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CN102340886B (en
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王睿炜
唐纪晔
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Abstract

The invention relates to the field of communication, and discloses an RRC (radio resource control) connection reestablishment method, device and system which are used for providing a corresponding method and a corresponding process for the implementation of RRC connection reestablishment on a base station side. The method is implemented by that an RRC layer on the base station side sends a primitive for RRC connection reestablishment to each protocol layer of a local bottom layer in different modes according to reasons for triggering the RRC connection reestablishment and different reestablishment objects so as to indicate each protocol layer to reestablish a signaling link, thereby realizing the RRC connection reestablishment, perfecting related processes concerning the RRC connection reestablishment in protocols, realizing the restoration of the signaling links, and ensuring the stability and reliability of communication. The invention also discloses an RRC connection reestablishment device and an RRC connection reestablishment system.

Description

A kind of method, Apparatus and system of rebuilding upright RRC connection
Technical field
The present invention relates to the communications field, particularly a kind of method, Apparatus and system of rebuilding upright RRC connection.
Background technology
In the prior LTE system, when UE need communicate with network, at first set up RRC and connect, just set up signaling link 1 (Signalling Radio Bearers 1, SRB1).Through initial safe activation, (Packet Data Convergence Protocol, PDCP) layer is made integrity protection to the RRC signaling and data is encrypted to start packet data polymerized agreement afterwards.After initial safe activates successfully, set up again service link (Data Radio Bearer, DRB).
When one of several kinds of situation below the appearance, UE can initiate RRC connection re-establishment process:
1) UE finds radio jink failure;
2) handoff procedure failure;
3) integrity verification failure;
4) RRC connects reconfiguration failure;
The purpose of RRC connection re-establishment process is exactly for when the connection appearance is unusual, can recover again to connect, and safety activates again, reservation connection as far as possible, the influence that reduces to communicate by letter and receive.In agreement 36.331, the realization flow of RRC connection re-establishment has been described, consult shown in Figure 1A, Figure 1B:
1, have only accomplish initial safe activation after; When having occurred connecting unusually; UE can send RRC and rebuild upright request message " RRC Connection Reestablishment Request "; In message, fill in the cell-of-origin Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell Radio Network Temporary Identity, C-RNTI), physical district ID, shortMAC-I and RRC connection re-establishment reason.The reason of RRC connection re-establishment comprises handoff failure, reconfiguration failure or other failure.This moment UE will hang up all RB except that SRB0, the replacement media access control layer (Medium Access Control, MAC) and wireless chain control layer (Radio Link Control, RLC).
2, after RRC Connection Reestablishment Request is received in the base station; The contextual information of searching this UE according to the C-RNTI and the physical district ID of cell-of-origin; If there is not contextual information; Can't carry out the RRC connection re-establishment, and return RRC and rebuild upright refuse information " RRC Connection Reestablishment Reject ", UE receives that refuse information will discharge RRC and connect.Integrity verification is carried out according to shortMAC-I in the base station, rebuilds upright refuse information " RRC Connection Reestablishment Reject " if RRC is also returned in the integrity protection failure.
3, base station lookups is returned RRC and is rebuild upright Indication message " RRC Connection Reestablishment " to the contextual information of this UE and through behind the integrity verification.UE carries out safe activation according to security configuration after receiving RRC connection re-establishment Indication message, recovers SRB1 according to wireless resource configuration again and connects.
4, UE sends RRC connection RRC and rebuilds the upright message " RRC Connection Reestablishment Complete " of accomplishing, and accomplishes RRC connection re-establishment process.
Prior protocols has been explained the realization flow of RRC connection re-establishment from the angle of UE, yet for base station side performed operation in RRC connection re-establishment process, in the agreement and the scheme and the principle of undeclared processing, does not provide concrete implementation.
Summary of the invention
The embodiment of the invention provides a kind of method, Apparatus and system that upright RRC connects of rebuilding.With thinking that base station side realizes that the RRC connection re-establishment provides corresponding method flow.
The concrete technical scheme that the embodiment of the invention provides is following:
A kind of method of rebuilding upright RRC connection comprises:
Rrc layer in the base station receives the RRC connection re-establishment request message that user terminal sends, and returns RRC connection re-establishment Indication message;
Rrc layer is based on the reason that triggers the RRC connection re-establishment and rebuild upright object, sends respectively to the protocal layers of local bottom to be used to rebuild the primitive that upright RRC connects, and the indication protocal layers are rebuild upright signaling link;
When rrc layer receives the RRC connection re-establishment completion message of user terminal transmission, confirm RRC connection re-establishment completion.
A kind of device of rebuilding upright RRC connection is positioned at rrc layer, it is characterized in that, comprising:
Communication unit is used to receive the RRC connection re-establishment request message that user terminal sends, and returns RRC connection re-establishment Indication message, and when message is accomplished in the RRC connection re-establishment that receives the user terminal transmission, confirms RRC connection re-establishment completion;
Control unit; Be used for after said communication unit sends RRC connection re-establishment Indication message; Based on the reason that triggers the RRC connection re-establishment and rebuild upright object, send respectively to the protocal layers of local bottom and to be used to rebuild the primitive that upright RRC connects, the indication protocal layers are rebuild upright signaling link.
A kind of system that rebuilds upright RRC connection comprises several base stations and user terminal, it is characterized in that, wherein,
Rrc layer in the said base station receives the RRC connection re-establishment request message that user terminal sends; And return RRC connection re-establishment Indication message; And based on the reason that triggers the RRC connection re-establishment and rebuild upright object, send respectively to the protocal layers of local bottom and to be used to rebuild the primitive that upright RRC connects, the indication protocal layers are rebuild upright signaling link; And when message is accomplished in the RRC connection re-establishment that receives the user terminal transmission, confirm RRC connection re-establishment completion.
In the embodiment of the invention; Proposed the concrete implementation of the base station side realization RRC connection re-establishment in the LTE system, wherein, the rrc layer of base station side is according to the reason that triggers the RRC connection re-establishment and rebuild the difference of founding object; Adopt different modes to send the primitive that is used to rebuild upright RRC connection to the protocal layers of local bottom; The indication protocal layers are rebuild upright signaling link, thereby have realized that the reconstruction that RRC connects is upright, perfect in the agreement about the related procedure of RRC connection re-establishment; Realize the recovery of signaling link, guaranteed the stability and the reliability of communication.
Description of drawings
Figure 1A is a RRC connection re-establishment success schematic flow diagram under the prior art;
Figure 1B is a RRC connection re-establishment failure schematic flow diagram under the prior art;
Fig. 2 A is communication system architectural framework figure in the embodiment of the invention;
Fig. 2 B is the control device functional structure chart that is positioned at rrc layer in the embodiment of the invention in the base station;
Fig. 3-Fig. 5 is three kinds of mode flow charts realizing the RRC connection re-establishment in the embodiment of the invention.
Embodiment
In the LTE system that adopts the TD technology, inside of base station is divided into a plurality of protocol layers, like, physical layer (PHY), media access control layer (MAC), Radio Link control (RLC), packet data convergence protocol (PDCP); And radio resource control layer (RRC); Wherein, the PHY layer is called layer 1, MAC layer, RCL layer and PDCP layer and closes and be called layer 2, and rrc layer is called layer 3; For rrc layer, the protocal layers in layer 1 and the layer 2 are regarded as the bottom of layer 3.
In the present embodiment; The concrete implementation that realizes the RRC connection re-establishment in base station side is provided; Comprise: the rrc layer in the base station receives the RRC connection re-establishment request message that user terminal sends, and returns RRC connection re-establishment Indication message, and rrc layer sends the primitive that is used to rebuild upright RRC connection respectively to the protocal layers of local bottom; The indication protocal layers are rebuild upright signaling link; And, when rrc layer receives the RRC connection re-establishment completion message of user terminal transmission, confirm RRC connection re-establishment completion.
In the practical application, application scenarios is inequality, realizes that the mode of RRC connection reconstruction is also inequality, in the embodiment of the invention, and several kinds of application scenarioss below main the existence:
1) thus UE carries out the minizone handoff failure triggers the RRC connection re-establishment.
UE carries out the minizone handoff failure, can be handoff failure between the sub-district that is connected based on X2 or S1 interface between the different base station, also can be handoff failure between the sub-district in same base station.
UE triggers the RRC connection reconstruction immediately because of the minizone handoff failure, and it rebuilds upright object can be the cell-of-origin, prepare the collection sub-district or agreement allows the sub-district.Wherein, The cell-of-origin be UE carry out before the handoff failure of minizone resident sub-district, preparing the collection sub-district is that the permission UE that writes down in the local configuration information of UE switches the sub-district of inserting, and agreement allows right and wrong cell-of-origin, sub-district; Non-preparation collection sub-district, but the sub-district that allows UE to insert according to consensus standard.All adopt the foregoing description mode in following examples, will repeat no more.
2) thus UE carries out professional reconfiguration failure triggers the RRC connection re-establishment.
UE carries out professional reconfiguration failure, can be newly-built, deletion or operation failure when revising certain professional configuration parameter.
UE triggers the RRC connection reconstruction immediately because of professional reconfiguration failure, and it rebuilds upright object can be that cell-of-origin or agreement allow the sub-district.
3) thus UE triggers the RRC connection re-establishment because of radio jink failure.
When UE detects signaling link or service link fault at bottom, can notify high level, and carry out the RRC connection re-establishment.As, the RLC transfer of data reaches maximum retransmission.
UE triggers the RRC connection reconstruction immediately because of radio jink failure, and it rebuilds upright object can be that cell-of-origin or agreement allow the sub-district.
Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.
Consult shown in Fig. 2 A; In the embodiment of the invention, be used to rebuild in the communication system that upright RRC connects and comprise several base stations and UE, wherein; Rrc layer in the said base station receives the RRC connection re-establishment request message that user terminal sends; And return RRC connection re-establishment Indication message, and send the primitive that is used to rebuild upright RRC connection respectively to the protocal layers of local bottom, the indication protocal layers are rebuild upright signaling link; And when message is accomplished in the RRC connection re-establishment that receives the user terminal transmission, confirm RRC connection re-establishment completion.
Consult shown in Fig. 2 B, in the embodiment of the invention, be used to rebuild the device that upright RRC connects (like, the rrc layer module the base station in), comprise communication unit 20 and control unit 21, wherein,
Communication unit 20 is used to receive the RRC connection re-establishment request message that user terminal sends, and returns RRC connection re-establishment Indication message, and when message is accomplished in the RRC connection re-establishment that receives the user terminal transmission, confirms RRC connection re-establishment completion;
Control unit 21 is used for after communication unit 20 sends RRC connection re-establishment Indication messages, sends respectively to the protocal layers of local bottom to be used to rebuild the primitive that upright RRC connects, and the indication protocal layers are rebuild upright signaling link.
Shown in Fig. 2 B; Further comprise allocation units 22 in the said apparatus; Be used for before communication unit 20 receives the RRC connection re-establishment request message of user terminal transmission; In the process that user terminal inserts at random; For this user terminal is distributed in the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and first index that uses as in the sub-district that rebuilds upright object, indicating user terminal sends RRC connection re-establishment request message based on a C-RNTI, further carries source C-RNTI and cell-of-origin physical I D that user terminal uses in the cell-of-origin in this RRC connection re-establishment request message.
In following examples,, abbreviate each layer module in the base station as PHY layer module, MAC layer module, rlc layer module, PDCP layer module and rrc layer module for ease of describing.
Based on the said system framework; Consult shown in Figure 3; In the present embodiment, under first kind of situation, trigger the RRC connection re-establishment because of carrying out the minizone handoff failure with UE; And rebuild upright to as if source base station in preparation collection sub-district (also can be the preparation collection sub-district in the non-source base station) be example, introducing the base station, to carry out the detailed process of RRC connection re-establishment following:
When the upright object of the reconstruction of UE collects the sub-district for preparation; Because the preparation collection sub-district in the base station is initiated RRC at UE and is rebuild distribution and the configuration that upright flow process has just been accomplished base station resource before, therefore, though the resource rollback can take place in UE; But can utilize base station resources configured, simplify handling process.
Step 301:MAC layer module receives the request message of access at random (Random Access) that UE sends.
Step 302:MAC layer module carried out C-RNTI request (C-RNTI Request) according to inserting the pilot code (Preamble) of carrying in the request message at random to the rrc layer module.
Step 303:RRC layer module is distributed in interim wireless network identification in sub-district and the index of preparing use in the collection sub-district for UE again, and note is C-RNTI respectively *And UEIndexCell *, and return C-RNTI response (C-RNTI Response) to MAC layer module.
Why the rrc layer module redistributes C-RNTI *And UEIndexCell *, be because the rrc layer module can not be judged the identity of UE this moment, promptly do not know this UE state in RRC connects in the past, can unify to handle as newly setting up RRC connection situation.Preparatory stage in the minizone before the handoff failure; Owing to accomplished the resource distribution of UE in this preparation collection sub-district; Therefore there be the C-RNTI and the UEIndexCell that in preparing the collection sub-district, use that has distributed acquisition for this UE; At this moment, UE has just existed C-RNTI and C-RNTI in this preparation collection sub-district *, totally 2 Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, and have UEIndexCell and UEIndexCell in this preparation collection sub-district *, totally 2 index need rationally to solve.
Step 304:MAC layer module sent accidental access response message (Random Access Response) to UE, through this accidental access response message with C-RNTI *Issue UE.
Step 305:RRC layer module receives the RRC connection re-establishment request message (RRC Connection Reestablishment Request) that UE sends, and wherein, UE is based on C-RNTI *The RRC connection re-establishment request message of initiating.Further, also need carry in the RRC connection re-establishment request message insert at random before, source C-RNTI that UE uses in the cell-of-origin and cell-of-origin physical I D.
The rrc layer module according to source C-RNTI and cell-of-origin physical I D, is searched the user's context of the UE in the base station after receiving and rebuilding upright request message, finds original state of this UE and resource.Because UE is preparing collection sub-district 2 index of existence and 2 Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, for avoiding confusion, the rrc layer module uses the unique index UEIndexEnb of UE in the base station to identify this UE.
Step 306:RRC layer module sent RRC connection re-establishment Indication message (RRC Connection Reestablishment) to UE.
After UE receives RRC connection re-establishment Indication message, just can begin to carry out the upright flow process of RRC reconstruction of UE side, mainly comprise, send the RRC connection re-establishment to the base station afterwards and accomplish message according to content configuration safety and signaling link in the RRC connection re-establishment message.
And behind the rrc layer module transmission RRC connection re-establishment Indication message, just begin to carry out RRC in base station side and rebuild upright flow process.
Step 307:RRC layer module sent PDCP suspended primitive (PDCP Suspend) to PDCP layer module, and indication PDCP layer module gets into suspended state, promptly suspends the bag that on service link, transmits and receive data.
After the PDCP layer receives the PDCP suspended primitive, will keep the state of packet for affirmation mode (AM pattern), the Wait-to-Restore continued is sent.
Step 308:RRC layer module sent the RLC primitive (RLC Reset) that resets to the rlc layer module, and indication rlc layer module resets, and promptly empties counter, returns to initial condition.
Step 309:RRC layer module sent MAC to MAC layer module and reshuffled primitive (MAC Reconfiguration), and indication MAC layer module carried out the parameter renegotiation configuration.
MAC layer module receives after MAC reshuffles primitive, adopts C-RNTI *Replacement C-RNTI, and deletion UEIndexCell *
Step 310:RRC layer module sent PHY to PHY layer module and reshuffled primitive (PHY Reconfiguration), and indication PHY layer module carried out the parameter renegotiation configuration.
PHY layer module receives after PHY reshuffles primitive, adopts C-RNTI *Replacement C-RNTI, and deletion UEIndexCell *, like this, just set up C-RNTI *And the one-to-one relationship between the UEIndexCell, can continue to use the UEIndexCell of the preceding preparatory stage distribution of handoff failure and the preparation collection local resource of configuration, simplify handling process.Reduce signaling consumption, accelerated the speed and the success rate of RRC connection re-establishment.
Above-mentioned steps 307-step 310 is that the base station side that designs again among the present invention is rebuild the flow process that RCC connects, and promptly rebuilds upright SRB1 dedicated signaling link.
Step 311:RRC layer module sent PDCP security configuration primitive (PDCP Security Config) to PDCP layer module, and indication PDCP layer module carried out security configuration to PDCP layer module and activated, and accomplishes RRC connection re-establishment process to cooperate the UE side.
Step 312:RRC layer module receives the RRC connection re-establishment that UE sends and accomplishes message (RRC Connection Reestablishment Complete), confirms that the RRC connection re-establishment accomplished.
Step 313:RRC layer module sent the RRC connection to the UE side and reshuffled Indication message (RRC Connection Reconfiguration), with the service link of configuration UE.
After the UE side joint was received the RRC connection reconfiguration message of rrc layer module transmission, according to the content configuration service link of RRC connection reconfiguration message, after configuration was accomplished, completion message was reshuffled in transmission RRC connection.
Step 314:RRC layer module sent PDCP to local PDCP layer module and recovered primitive (PDCP Resume); Be used for indicating the PDCP layer to recover from suspended state; Promptly begin the bag that on service link, transmits and receive data, accomplish the recovery of service link to cooperate the UE side.
The RRC that step 315:RRC layer module receives the UE transmission reshuffles completion message (RRC Connection Reconfiguration Complete), confirms that the flow process of reshuffling that the RRC connection re-establishment triggers finishes.At this moment, the service link DRB between base station side and the UE side also recovers.
In the foregoing description; Owing to carry out the RRC connection reconstruction immediately, the reconstruction of UE is upright to liking the preparation collection sub-district in the base station, therefore; Subsequent treatment can be switched the completion processing according to minizone in the base station; The access implementation procedure of lower floor needn't be concerned about in the upper strata, and promptly the upper strata needn't be concerned about that it is to switch to accomplish access or insert simplification upper strata handling process through the RRC connection re-establishment that the UE access prepares to collect the sub-district.
On the other hand, trigger under the situation of RRC connection re-establishment because of professional reconfiguration failure or radio jink failure, do not exist and prepare the collection sub-district, therefore need not to design corresponding flow process, repeat no more at this at UE.
Be different from the foregoing description, consult shown in Figure 4, in the present embodiment; Under second kind of situation; Trigger the RRC connection re-establishment with UE because of carrying out professional reconfiguration failure, and rebuild upright to as if source base station in the cell-of-origin be example, introducing the base station, to carry out the detailed process of RRC connection re-establishment following:
Because professional reconfiguration failure has taken place; Therefore the resource rollback can occur in the system,, suppose that UE has set up carrying SRB1 and DRB3 (service link 3) for the ease of explanation; Receive that the service bearer of sending sets up request message, new service link DRB4 (service link 4) is set up in request.
Step 400:RRC layer module sent the RRC connection to UE and reshuffled Indication message (RRC Connection Reconfiguration), and to the UE distributing radio resource, notice is set up DRB4 based on newly assigned resource UE.
In the step 401-step 405; The rrc layer module is sent PDCP configuration primitive (PDCP Config) to PDCP layer module; Send rlc layer configuration primitive (RLC Config) to the rlc layer module, send MAC layer configuration primitive (MAC Config), and send PHY layer configuration primitive (PHY Config) to PHY layer module to MAC layer module; Be used for the resource that set up DRB4 of base station side configuration PDCP layer, rlc layer, MAC layer and PHY layer, accomplish the foundation of DRB4 to cooperate UE.
As shown in Figure 4, UE can not set up new carrying DRB4, reconfiguration failure, thereby trigger RRC connection re-establishment flow process.
Step 406:MAC layer module receives the request message of access at random (Random Access) that UE sends.In the present embodiment, what suppose that UE request inserts at random is the cell-of-origin.
Step 407:MAC layer module carried out C-RNTI request (C-RNTI Request) according to inserting the pilot code (Preamble) of carrying in the request message at random to the rrc layer module.
Step 408:RRC layer module is distributed in interim wireless network identification in the sub-district of using in the cell-of-origin and index for UE again, and note is C-RNTI respectively *And UEIndexCell *, and return C-RNTI response (C-RNTI Response) to MAC layer module.
Why the rrc layer module redistributes C-RNTI *And UEIndexCell *, be because the rrc layer module can not be judged the identity of UE this moment, promptly do not know this UE state in RRC connects in the past, can unify to handle as newly setting up RRC connection situation.Preparatory stage before professional reconfiguration failure; Owing to accomplished the resource distribution of UE in the cell-of-origin; Therefore exist among the UE and distributed the source C-RNTI that in the cell-of-origin, uses and the source UEIndexCell of acquisition, at this moment, UE has just existed source C-RNTI and C-RNTI in this cell-of-origin *, totally 2 Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, and in this cell-of-origin, have source UEIndexCell and UEIndexCell *, totally 2 index need rationally to solve.
Step 409:MAC layer module sent accidental access response message (Random Access Response) to UE, through this accidental access response message with C-RNTI *Issue UE.
Step 410:RRC layer module receives the RRC connection re-establishment request message (RRC Connection Reestablishment Request) that UE sends, and wherein, UE is based on C-RNTI *The RRC connection re-establishment request message of initiating.Further, also need carry in the RRC connection re-establishment request message insert at random before, source C-RNTI that UE uses in the cell-of-origin and cell-of-origin physical I D.
The rrc layer module according to source C-RNTI and cell-of-origin physical I D, is searched the user's context of the UE in the base station after receiving and rebuilding upright request message, finds original state of this UE and resource, obtains the source UEIndexCell corresponding with source C-RNTI.Because UE exists 2 index and 2 Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs in the cell-of-origin, for avoiding confusion, the rrc layer module uses the unique index UEIndexEnb of UE in the base station to identify this UE.
Step 411:RRC layer module sent RRC connection re-establishment Indication message (RRC Connection Reestablishment) to UE.
After UE receives RRC connection re-establishment Indication message, just can begin to carry out the upright flow process of RRC reconstruction of UE side.
And behind the rrc layer module transmission RRC connection re-establishment Indication message, just begin to carry out RRC connection re-establishment flow process in base station side.
Step 412:RRC layer module sent PDCP suspended primitive (PDCP Suspend) to PDCP layer module, and indication PDCP layer gets into suspended state, promptly suspends the bag that on DRB3, transmits and receive data.
Step 413:RRC layer module sent the RLC primitive (RLC Reset) that resets to the rlc layer module, and indication rlc layer module resets, and promptly empties counter, returns to initial condition.
Step 414:RRC layer module sent MAC to MAC layer module and reshuffled primitive (MAC Reconfiguration), and indication MAC layer module carried out the parameter renegotiation configuration.
MAC layer module receives after MAC reshuffles primitive, adopts C-RNTI *Replacement source C-RNTI, and deletion UEIndexCell *
Step 415:RRC layer module sent PHY to PHY layer module and reshuffled primitive (PHY Reconfiguration), and indication PHY layer module carried out the parameter renegotiation configuration.
PHY layer module receives after PHY reshuffles primitive, adopts C-RNTI *Replacement C-RNTI, and deletion UEIndexCell *, like this, just set up C-RNTI *And the one-to-one relationship between the UEIndexCell of source, can continue to use business to reshuffle the UEIndexCell of preparatory stage distribution before and the cell-of-origin resource of configuration.
Above-mentioned steps 412-step 415 is that the base station side that designs again among the present invention is rebuild the flow process that RCC connects, and promptly rebuilds upright SRB1 dedicated signaling link.
Step 416:RRC layer module sent to PDCP layer module, PDCP security configuration primitive (PDCP Security Config), and indication PDCP layer module carried out security configuration to PDCP layer module and activated, and accomplishes RRC connection re-establishment process to cooperate the UE side.
Step 417:RRC layer module receives the RRC connection re-establishment that UE sends and accomplishes message (RRCConnection Reestablishment Complete), confirms that the RRC connection re-establishment accomplished.
Step 418:RRC layer module sent the RRC connection to UE and reshuffled Indication message (RRC Connection Reconfiguration), is used for the underlying resource of configuration UE, to recover the service link of UE.
In the present embodiment, because professional reconfiguration failure, therefore, the resource rollback need take place in UE, and when the resource rollback, bottom has not rollback of part resource, need reconfigure.
On the other hand, because the base station has disposed SRB1, DRB3 and DRB4 in the cell-of-origin of UE, and UE only disposes SRB1 and DRB3 according to protocol description generation resource rollback, in order to keep resource consistence, need reconfigure the base station side resource.In base station side, adopt the mode of reverse configuration, deletion DRB4 gets final product, and can carry out the base station side resource reconfiguration according to the mode that step 419-step 422 is described.
Step 419:RRC layer module sent PDCP configuration primitive (PDCP Config) to PDCP layer module, and indication PDCP layer module recovered from suspended state, promptly activates DRB3, begins on DRB3, to transmit and receive data bag, deletes the DRB4 service link simultaneously.
Step 420:RRC layer module sent RLC configuration primitive (RLC Config) to the rlc layer module, indication rlc layer module deletion DRB4 service link.
Step 421:RRC layer module sent MAC configuration primitive (MAC Config) to MAC layer module, indication MAC layer module deletion DRB4 service link.
Step 422:RRC layer module sent PHY configuration primitive (PHY Config) to PHY layer module, indication PHY layer module deletion DRB4 service link.
Through above-mentioned steps 419-step 422, after the RRC module has been deleted the configuration parameter of DRB4, activate the suspended state of DRB3 simultaneously.Reduced like this for the influence of setting up professional DRB3, improved communication quality.
Step 423: the RRC that the base station receives the UE transmission reshuffles completion message (RRC Connection Reconfiguration Complete), confirms that the flow process of reshuffling that the RRC connection re-establishment triggers finishes.At this moment, the service link DRB3 between base station side and the UE side also recovers.
In the present embodiment; Trigger the RRC connection re-establishment for UE because of carrying out minizone handoff failure or radio jink failure; And rebuilding upright object is the situation of cell-of-origin, similar with above-mentioned flow process, only needs to carry out corresponding operating to DRB3 and gets final product; No longer need carry and operate, repeat no more at this to the DRB4 of newly-built failure.
On the other hand; The foregoing description be with professional reconfiguration failure for " setting up the new business link failure " be that example is introduced; In the practical application; If professional reconfiguration failure is " failure of deletion service link ", then in step 418-step 423, the rrc layer module need be indicated the service link of the newly-built deletion failure of PDCP layer module, rlc layer module, MAC layer module and PHY layer module respectively; If professional reconfiguration failure be the configuration failure of service link " revise " then in step 418-step 423, the rrc layer module need indicate PDCP layer module, rlc layer module, MAC layer module and PHY layer module will revise configuration restore to the modification state before of the service link of failure respectively.In a word, because of professional reconfiguration failure triggers the RRC connection reconstruction immediately, base station side need connect the mode that adopts reverse configuration in the reconfiguration course at the RRC after the RRC connection re-establishment, makes the system resource of base station side and UE side be consistent.
Be different from above-mentioned two embodiment, consult shown in Figure 5, in the present embodiment; Under the third situation; Trigger the RRC connection re-establishment with UE because of radio jink failure, and rebuild upright to as if source base station in agreement to allow the sub-district be example, introducing the base station, to carry out the detailed process of RRC connection re-establishment following:
UE is under connection status; After detecting radio jink failure, the RRC connection re-establishment takes place be linked into agreement permission sub-district, owing in agreement allows the sub-district, be not the UE Resources allocation; Therefore in RRC connection re-establishment process; To after the RRC connection re-establishment, trigger RRC and connect reconfiguration course for UE disposes the SRB1 resource, be UE configuration DRB resource.
Step 501:MAC layer module receives the request message of access at random (Random Access) that UE sends.
Step 502:MAC layer module carried out C-RNTI request (C-RNTI Request) according to inserting the pilot code (Preamble) of carrying in the request message at random to the rrc layer module.
Step 503:RRC layer module is that UE is distributed in interim wireless network identification in sub-district and the index that agreement allows use in the sub-district, and note is C-RNTI respectively *And UEIndexCell *, and return C-RNTI response (C-RNTI Response) to MAC layer module.
Why the rrc layer module distributes C-RNTI *And UEIndexCell *, be because the rrc layer module can not be judged the identity of UE this moment, promptly do not know this UE state in RRC connects in the past, can unify to handle as newly setting up RRC connection situation.
Step 504:MAC layer module sent accidental access response message (Random Access Response) to UE, through this accidental access response message with C-RNTI *Issue UE.
Step 505:RRC layer module receives the RRC connection re-establishment request message (RRC Connection Reestablishment Request) that UE sends, and wherein, UE is based on C-RNTI *The RRC connection re-establishment request message that rises.Further, also need carry in this RRC connection re-establishment request message insert at random before, source C-RNTI that UE uses in the cell-of-origin and cell-of-origin physical I D.
After the rrc layer module receives; According to source C-RNTI in the RRC connection re-establishment request message and cell-of-origin physical I D; Search the user's context of the UE in the base station, find original state of this UE and resource, obtain the source UEIndexCell corresponding with source C-RNTI; And the index of cell-of-origin in source base station be designated as OldCellIndexEnb, the source UEIndexCell of UE in the cell-of-origin is designated as OldUEIndexCell.
Step 506:RRC layer module sent RRC connection re-establishment Indication message (RRC Connection Reestablishment) to UE.
Step 507:RRC layer module sent PDCP configuration primitive (PDCP Config) to PDCP layer module, and indication PDCP module allows the sub-district to set up SRB1 dedicated signaling link in agreement.
SRB and DRB are notions in logic, are in order one type of business datum of a UE to be sorted out and to be carried out Unified Treatment, only need foundation logically to get final product, need not carrying out other concrete operations.
Step 508:RRC layer module sent RLC configuration primitive (RLC Config) to the rlc layer module, and indication RLC module allows the sub-district to set up SRB1 dedicated signaling link in agreement.
Step 509:RRC layer module sent MAC configuration primitive (MAC Config) to MAC layer module, and indication MAC module allows the sub-district to set up SRB1 dedicated signaling link in agreement.
Step 510:RRC layer module sent PHY configuration primitive (PHY Config) to PHY layer module, allows the link circuit resource of cell configuration SRB1 dedicated signaling link in agreement.
Above-mentioned steps 507-step 510 is that the base station side that designs again among the present invention is rebuild the flow process that RCC connects, and promptly rebuilds upright SRB1 dedicated signaling link.
Step 511:RRC layer module sent to PDCP layer module, PDCP security configuration primitive (PDCPSecurity Config), and indication PDCP layer module carried out security configuration to the PDCP layer and activated, and accomplishes RRC connection re-establishment process to cooperate the UE side.
Step 512:RRC layer module receives the RRC connection re-establishment that UE sends and accomplishes message (RRC Connection Reestablishment Complete), confirms that the RRC connection re-establishment accomplished.
Step 513:RRC layer module sent the RRC connection to the UE side and reshuffled Indication message (RRCConnection Reconfiguration), with the service link of configuration UE.
After the UE side joint receives that the RRC of rrc layer module transmission connects reconfiguration message, need configuration DRB service link, send the RRC connection afterwards and reshuffle completion message.
Step 514:RRC layer module sent PDCP configuration primitive (PDCP Config) to PDCP layer module, and indication PDCP layer module set up the DRB service link.
PDCP layer module is used for the encryption and decryption and the head compression of packet.Setting up service link is exactly for an encryption and decryption and a processed compressed are carried out in the packet unification on the service link.
Step 515:RRC layer module sent RLC configuration primitive (RLC Config) to the rlc layer module, and indication rlc layer module is set up the DRB service link.
Step 516:RRC layer module sent MAC configuration primitive (MAC Config) to MAC layer module, and indication MAC layer module set up the DRB service link.
Step 517:RRC layer module sent PHY configuration primitive (PHY Config) to PHY layer module, the link circuit resource of configuration DRB service link.
Through above-mentioned steps 514-step 517, be base station side configuration PDCP, RLC, MAC and the newly-established DRB resource of physical layer.
The RRC that step 518:RRC layer module receives the UE transmission reshuffles completion message (RRC Connection Reconfiguration Complete), confirms that the flow process of reshuffling that the RRC connection re-establishment triggers finishes.
Simultaneously, the rrc layer module also need be through cell-of-origin index OldCellIndexEnb and UE index OldUEIndexCell deletion UE resource in the cell-of-origin in the cell-of-origin in the base station.
On the other hand; Reshuffle and trigger the RRC connection re-establishment because of carrying out minizone handoff failure or business for UE; And rebuild upright object and be the situation of the agreement permission sub-district in the source base station, similar with above-mentioned flow process, because agreement allows the sub-district all to reconfigure; All the same under the various situation, repeat no more at this.
In sum, in the embodiment of the invention, the concrete implementation of the base station side realization RRC connection re-establishment in the LTE system has been proposed; Wherein, The rrc layer of base station side is according to the reason that triggers the RRC connection re-establishment and rebuild the difference of founding object, adopts different modes to be used to rebuild the primitive that upright RRC connects to the protocal layers transmission of local bottom, and signaling link is found in the reconstruction of indication protocal layers; Thereby the reconstruction that has realized the RRC connection is upright; Perfect in the agreement about the related procedure of RRC connection re-establishment, realized the recovery of signaling link, guaranteed the stability and the reliability of communication.Further; Reset mode with the corresponding service link of reset mode of signaling link has also been proposed; The difference of after the RRC connection re-establishment is accomplished, founding object according to the reason and the reconstruction of triggering RRC connection re-establishment; Adopt different flow processs to accomplish recovery, further guarantee the stability and the reliability of communication service link.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims (27)

1. rebuild the method that upright radio resource control RRC connects for one kind, it is characterized in that, comprising:
Rrc layer in the base station receives the RRC connection re-establishment request message that user terminal sends, and returns RRC connection re-establishment Indication message;
Rrc layer is based on the reason that triggers the RRC connection re-establishment and rebuild upright object, sends respectively to the protocal layers of local bottom to be used to rebuild the primitive that upright RRC connects, and the indication protocal layers are rebuild upright signaling link;
When rrc layer receives the RRC connection re-establishment completion message of user terminal transmission, confirm RRC connection re-establishment completion.
2. the method for claim 1; It is characterized in that; Rrc layer receives before the RRC connection re-establishment request message of user terminal transmission; In the process that user terminal inserts at random; For this user terminal is distributed in the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and first index that uses as in the sub-district that rebuilds upright object, indicating user terminal sends RRC connection re-establishment request message based on a C-RNTI, further carries source C-RNTI and cell-of-origin physical I D that user terminal uses in the cell-of-origin in this RRC connection re-establishment request message.
3. method as claimed in claim 2; It is characterized in that; If user terminal triggers the RRC connection re-establishment because of the minizone handoff failure, and the upright object of reconstruction is for preparing the collection sub-district, after then rrc layer receives the upright request message of said RRC reconstruction; Search the user's context of user terminal according to its source C-RNTI that carries and cell-of-origin physical I D, obtain user terminal and in said preparation collection sub-district, distributed the 2nd C-RNTI and second index that obtains.
4. method as claimed in claim 3; It is characterized in that said rrc layer is based on the reason that triggers the RRC connection re-establishment and rebuild upright object, send respectively to the protocal layers of local bottom and be used to rebuild the primitive that upright RRC connects; The indication protocal layers are rebuild upright signaling link, comprising:
Send the PDCP suspended primitive to PDCP PDCP layer, be used to indicate the PDCP layer to suspend the bag that transmits and receive data;
Send the RLC primitive that resets to Radio Link control rlc layer, be used to indicate rlc layer to return to initial condition;
Send MAC to the media access control MAC layer and reshuffle primitive, be used to indicate the MAC layer to adopt a C-RNTI to replace the 2nd C-RNTI, delete first index simultaneously;
Send PHY to physics PHY layer and reshuffle primitive, be used to indicate the PHY layer to adopt a C-RNTI to replace the 2nd C-RNTI, delete first index simultaneously, to set up the mapping relations between a C-RNTI and second index.
5. method as claimed in claim 2; It is characterized in that; If user terminal is rebuild uprightly because of professional reconfiguration failure triggers RRC, and to rebuild upright object be the cell-of-origin, after then rrc layer receives said RRC and rebuilds upright request message; Search the user's context of user terminal according to source C-RNTI and source physical district ID, obtain user terminal and in said cell-of-origin, distributed the source index that obtains.
6. method as claimed in claim 5; It is characterized in that said rrc layer is based on the reason that triggers the RRC connection re-establishment and rebuild upright object, send respectively to the protocal layers of local bottom and be used to rebuild the primitive that upright RRC connects; The indication protocal layers are rebuild upright signaling link, comprising:
Send the PDCP suspended primitive to PDCP PDCP layer, be used to indicate the PDCP layer before business is reshuffled, to suspend the bag that transmits and receive data on the already present service link;
Send the RLC primitive that resets to Radio Link control rlc layer, be used to indicate rlc layer to return to initial condition;
Send MAC to the media access control MAC layer and reshuffle primitive, be used to indicate the MAC layer to adopt C-RNTI replacement source C-RNTI, delete first index simultaneously;
Send PHY to physics PHY layer and reshuffle primitive, be used to indicate the PHY layer to adopt C-RNTI replacement source C-RNTI, delete first index simultaneously, to set up the mapping relations between a C-RNTI and the source index.
7. method as claimed in claim 2; It is characterized in that if user terminal is upright because of radio jink failure triggers the RRC reconstruction, and the upright object of reconstruction is the agreement permission sub-district in the source base station; After then rrc layer receives the upright request message of said RRC reconstruction; Search the user's context of user terminal according to source C-RNTI and source physical district ID, obtain user terminal and in the cell-of-origin, distributed the source index that obtains, and the cell-of-origin index that obtains distributing in source base station of cell-of-origin.
8. method as claimed in claim 7 is characterized in that, said rrc layer is based on the reason that triggers the RRC connection re-establishment and rebuild upright object, and to the protocal layers transmission control primitive of local bottom, the indication protocal layers are rebuild upright signaling link, comprising:
Send PDCP configuration primitive to PDCP PDCP layer, be used to indicate the PDCP layer to allow the sub-district to set up signaling link in agreement;
Send RLC configuration primitive to Radio Link control rlc layer, be used to indicate rlc layer to allow the sub-district to set up signaling link in agreement;
Send MAC configuration primitive to the media access control MAC layer, be used to indicate the MAC layer to allow the sub-district to set up signaling link in agreement;
Send PHY configuration primitive to physics PHY layer, be used to indicate the PHY layer to allow the link circuit resource of the signaling link that cell configuration set up in agreement.
9. like claim 3,5 or 7 described methods, it is characterized in that said rrc layer comprises after confirming that the RRC connection re-establishment is accomplished:
Send the RRC connection to user terminal and reshuffle Indication message;
Based on the reason that triggers the RRC connection re-establishment and rebuild upright object, send the primitive that is used to recover service link at least one protocol layer of local bottom, indicate said at least one protocol layer that service link is recovered;
Receive RRC that user terminal returns and connect and reshuffle when accomplishing message, confirm that service link recovers.
10. method as claimed in claim 9; It is characterized in that,, and rebuild upright object for preparing the collection sub-district if user terminal triggers the RRC connection re-establishment because of the minizone handoff failure; Then said rrc layer is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; At least one protocol layer to local bottom sends the primitive that is used to recover service link, indicates said at least one protocol layer that service link is recovered, and comprising:
Send PDCP to the PDCP of this locality layer and recover primitive, be used to indicate the PDCP layer bag that begins to transmit and receive data.
11. method as claimed in claim 9; It is characterized in that if user terminal is upright because of professional reconfiguration failure triggers the RRC reconstruction, and the upright object of reconstruction is the cell-of-origin; Then said rrc layer is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; At least one protocol layer to local bottom sends the primitive that is used to recover service link, indicates said at least one protocol layer that service link is recovered, and comprising:
Send PDCP configuration primitive to the PDCP of this locality layer; Be used to indicate the PDCP layer to begin the bag that before business is reshuffled, transmits and receive data on the already present service link; And delete the service link of setting up in the professional reconfiguration course; Rebuild the service link of deleting in the professional reconfiguration course, the configuration of the service link that perhaps recovers to revise in the professional reconfiguration course;
Send RLC configuration primitive to the rlc layer of this locality, be used for indicating rlc layer to delete the service link that professional reconfiguration course is set up, rebuild the service link of deleting in the professional reconfiguration course, the configuration of the service link that perhaps recovers to revise in the professional reconfiguration course;
Send MAC to the MAC of this locality layer and reshuffle primitive; Be used for indicating the MAC layer to delete the service link that professional reconfiguration course is set up; Rebuild the service link of deleting in the professional reconfiguration course, the configuration of the service link that perhaps recovers to revise in the professional reconfiguration course;
Send PHY to the PHY of this locality layer and reshuffle primitive; Be used for indicating the PHY layer to delete the service link that professional reconfiguration course is set up; Rebuild the service link of deleting in the professional reconfiguration course, the configuration of the service link that perhaps recovers to revise in the professional reconfiguration course.
12. method as claimed in claim 9; It is characterized in that if user terminal is upright because of radio jink failure triggers the RRC reconstruction, and the upright object of reconstruction is the agreement permission sub-district in the source base station; Then said rrc layer is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; At least one protocol layer to local bottom sends the primitive that is used to recover service link, indicates said at least one protocol layer that service link is recovered, and comprising:
Send PDCP configuration primitive to the PDCP of this locality layer, be used to indicate the PDCP layer to set up service link;
Rlc layer to this locality sends RLC configuration primitive, is used to indicate rlc layer to set up service link;
Send MAC configuration primitive to the MAC of this locality layer, be used to indicate the MAC layer to set up service link;
Send PHY configuration primitive to the PHY of this locality layer, be used to indicate the PHY layer to dispose the link circuit resource of the service link of having set up.
13. method as claimed in claim 12; It is characterized in that; Said rrc layer receives RRC that user terminal returns and connects and reshuffle when accomplishing message, confirms that service link recovers, and deletes the resource of user terminal in the cell-of-origin based on said source index and cell-of-origin index.
14. rebuild the device that upright radio resource control RRC connects for one kind, be positioned at rrc layer, it is characterized in that, comprising:
Communication unit is used to receive the RRC connection re-establishment request message that user terminal sends, and returns RRC connection re-establishment Indication message, and when message is accomplished in the RRC connection re-establishment that receives the user terminal transmission, confirms RRC connection re-establishment completion;
Control unit; Be used for after said communication unit sends RRC connection re-establishment Indication message; Based on the reason that triggers the RRC connection re-establishment and rebuild upright object, send respectively to the protocal layers of local bottom and to be used to rebuild the primitive that upright RRC connects, the indication protocal layers are rebuild upright signaling link.
15. device as claimed in claim 14 is characterized in that, further comprises:
Allocation units; Be used for before said communication unit receives the RRC connection re-establishment request message of user terminal transmission; In the process that user terminal inserts at random; Be distributed in the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and first index that uses as in the sub-district that rebuilds upright object for this user terminal; Indicating user terminal sends RRC connection re-establishment request message based on a C-RNTI, further carries source C-RNTI and cell-of-origin physical I D that user terminal uses in the cell-of-origin in this RRC connection re-establishment request message.
16. device as claimed in claim 15; It is characterized in that; If user terminal triggers the RRC connection re-establishment because of the minizone handoff failure, and the upright object of reconstruction is for preparing the collection sub-district, after then said communication unit receives the upright request message of said RRC reconstruction; Search the user's context of user terminal according to source C-RNTI and cell-of-origin physical I D, obtain user terminal and in said preparation collection sub-district, distributed the 2nd C-RNTI and second index that obtains.
17. device as claimed in claim 16; It is characterized in that; Said control unit is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; Protocal layers to local bottom send the primitive that is used to rebuild upright RRC connection respectively, and the indication protocal layers are rebuild when founding signaling link, carry out following operation:
Send the PDCP suspended primitive to PDCP PDCP layer, be used to indicate the PDCP layer to suspend the bag that transmits and receive data;
Send the RLC primitive that resets to Radio Link control rlc layer, be used to indicate rlc layer to return to initial condition;
Send MAC to the media access control MAC layer and reshuffle primitive, be used to indicate the MAC layer to adopt a C-RNTI to replace the 2nd C-RNTI, delete first index simultaneously;
Send PHY to physics PHY layer and reshuffle primitive, be used to indicate the PHY layer to adopt a C-RNTI to replace the 2nd C-RNTI, delete first index simultaneously, to set up the mapping relations between a C-RNTI and second index.
18. device as claimed in claim 15; It is characterized in that; If user terminal is rebuild uprightly because of professional reconfiguration failure triggers RRC, and to rebuild upright object be the cell-of-origin, then said communication unit receives said RRC rebuild upright request message after; Search the user's context of user terminal according to source C-RNTI and source physical district ID, obtain user terminal and in said cell-of-origin, distributed the source index that obtains.
19. device as claimed in claim 18; It is characterized in that; Said control unit is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; Protocal layers to local bottom send the primitive that is used to rebuild upright RRC connection respectively, and the indication protocal layers are rebuild when founding signaling link, carry out following operation:
Send the PDCP suspended primitive to PDCP PDCP layer, be used to indicate the PDCP layer before business is reshuffled, to suspend the bag that transmits and receive data on the already present service link;
Send the RLC primitive that resets to Radio Link control rlc layer, be used to indicate rlc layer to return to initial condition;
Send MAC to the media access control MAC layer and reshuffle primitive, be used to indicate the MAC layer to adopt C-RNTI replacement source C-RNTI, delete first index simultaneously;
Send PHY to physics PHY layer and reshuffle primitive, be used to indicate the PHY layer to adopt C-RNTI replacement source C-RNTI, delete first index simultaneously, to set up the mapping relations between a C-RNTI and the source index.
20. device as claimed in claim 15; It is characterized in that if user terminal is upright because of radio jink failure triggers the RRC reconstruction, and the upright object of reconstruction is the agreement permission sub-district in the source base station; After then said communication unit receives the upright request message of said RRC reconstruction; Search the user's context of user terminal according to source C-RNTI and source physical district ID, obtain user terminal and in the cell-of-origin, distributed the source index that obtains, and the cell-of-origin index that obtains distributing in source base station of cell-of-origin.
21. device as claimed in claim 20; It is characterized in that; Said control unit is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; Protocal layers to local bottom send the primitive that is used to rebuild upright RRC connection respectively, and the indication protocal layers are rebuild when founding signaling link, carry out following operation:
Send PDCP configuration primitive to PDCP PDCP layer, be used to indicate the PDCP layer to allow the sub-district to set up signaling link in agreement;
Send RLC configuration primitive to Radio Link control rlc layer, be used to indicate rlc layer to allow the sub-district to set up signaling link in agreement;
Send MAC configuration primitive to the media access control MAC layer, be used to indicate the MAC layer to allow the sub-district to set up signaling link in agreement;
Send PHY configuration primitive to physics PHY layer, be used to indicate the PHY layer to allow the link circuit resource of the signaling link that cell configuration set up in agreement.
22. like claim 16,18 or 20 described devices; It is characterized in that; After said communication unit layer confirms that the RRC connection re-establishment is accomplished; Send RRC to user terminal and connect and reshuffle Indication message, and connect and reshuffle when accomplishing message receiving RRC that user terminal returns, confirm that service link recovers; Said control unit is after Indication message is reshuffled in said communication unit transmission RRC connection; Based on reason that triggers the RRC connection re-establishment and the upright object of reconstruction; At least one protocol layer to local bottom sends the primitive that is used to recover service link, indicates said at least one protocol layer that service link is recovered.
23. device as claimed in claim 22; It is characterized in that,, and rebuild upright object for preparing the collection sub-district if user terminal triggers the RRC connection re-establishment because of the minizone handoff failure; Then said control unit is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; At least one protocol layer to local bottom sends the primitive that is used to recover service link, when indicating said at least one protocol layer that service link is recovered, and operation below carrying out:
Send PDCP to the PDCP of this locality layer and recover primitive, be used to indicate the PDCP layer bag that begins to transmit and receive data.
24. device as claimed in claim 22; It is characterized in that if user terminal is upright because of professional reconfiguration failure triggers the RRC reconstruction, and the upright object of reconstruction is the cell-of-origin; Then said control unit is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; At least one protocol layer to local bottom sends the primitive that is used to recover service link, when indicating said at least one protocol layer that service link is recovered, and operation below carrying out:
Send PDCP configuration primitive to the PDCP of this locality layer; Be used to indicate the PDCP layer to begin the bag that before business is reshuffled, transmits and receive data on the already present service link; And delete the service link of setting up in the professional reconfiguration course; Rebuild the service link of deleting in the professional reconfiguration course, the configuration of the service link that perhaps recovers to revise in the professional reconfiguration course;
Send RLC configuration primitive to the rlc layer of this locality, be used for indicating rlc layer to delete the service link that professional reconfiguration course is set up, rebuild the service link of deleting in the professional reconfiguration course, the configuration of the service link that perhaps recovers to revise in the professional reconfiguration course;
Send MAC to the MAC of this locality layer and reshuffle primitive; Be used for indicating the MAC layer to delete the service link that professional reconfiguration course is set up; Rebuild the service link of deleting in the professional reconfiguration course, the configuration of the service link that perhaps recovers to revise in the professional reconfiguration course;
Send PHY to the PHY of this locality layer and reshuffle primitive; Be used for indicating the PHY layer to delete the service link that professional reconfiguration course is set up; Rebuild the service link of deleting in the professional reconfiguration course, the configuration of the service link that perhaps recovers to revise in the professional reconfiguration course.
25. device as claimed in claim 22; It is characterized in that if user terminal is upright because of radio jink failure triggers the RRC reconstruction, and the upright object of reconstruction is the agreement permission sub-district in the source base station; Then said control unit is based on the reason that triggers the RRC connection re-establishment and rebuild upright object; At least one protocol layer to local bottom sends the primitive that is used to recover service link, indicates said at least one protocol layer that service link is recovered, operation below carrying out:
Send PDCP configuration primitive to the PDCP of this locality layer, be used to indicate the PDCP layer to set up service link;
Rlc layer to this locality sends RLC configuration primitive, is used to indicate rlc layer to set up service link;
Send MAC configuration primitive to the MAC of this locality layer, be used to indicate the MAC layer to set up service link;
Send PHY configuration primitive to the PHY of this locality layer, be used to indicate the PHY layer to dispose the link circuit resource of the service link of having set up.
26. device as claimed in claim 25; It is characterized in that; Said communication unit receives RRC that user terminal returns and connects and reshuffle when accomplishing message; Confirm that service link recovers, then said control unit is based on said source index and the resource of index deletion user terminal in cell-of-origin in the cell-of-origin.
27. rebuild the system that upright radio resource control RRC connects for one kind, comprise several base stations and user terminal, it is characterized in that, wherein,
Rrc layer in the said base station receives the RRC connection re-establishment request message that user terminal sends; And return RRC connection re-establishment Indication message; And based on the reason that triggers the RRC connection re-establishment and rebuild upright object, send respectively to the protocal layers of local bottom and to be used to rebuild the primitive that upright RRC connects, the indication protocal layers are rebuild upright signaling link; And when message is accomplished in the RRC connection re-establishment that receives the user terminal transmission, confirm RRC connection re-establishment completion.
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