CN102340886B - RRC (radio resource control) connection reestablishment method, device and system - Google Patents
RRC (radio resource control) connection reestablishment method, device and system Download PDFInfo
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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
Technical field
The present invention relates to the communications field, particularly a kind of method, Apparatus and system that re-establishes RRC connection.
background technology
In existing LTE system, when UE need to communicate with network, model RRC connects, and namely sets up signaling link 1 (Signalling Radio Bearers1, SRB1).By initial safe activation, start packet data polymerized agreement (Packet Data Convergence Protocol, PDCP) layer RRC letter the present is made integrity protection and data are encrypted afterwards.After initial safe activates successfully, then set up service link (Data Radio Bearer, DRB).
Below occurring, during one of several situations, 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 object of RRC connection re-establishment process is exactly for when connection appearance is abnormal, can again recover to connect, and safe activation, retains and connect as far as possible again, reduces the impact of communicating by letter and being subject to.In agreement 36.331, the realization flow of RRC connection re-establishment has been described, consult shown in Figure 1A, Figure 1B:
1, only have and complete after initial safe activation, when having occurred connecting extremely, UE can send RRC and re-establish request message " RRC Connection Reestablishment Request ", in message, fill in Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell Radio Network Temporary Identity, C-RNTI), physical district ID, shortMAC-I and the RRC connection re-establishment reason of cell-of-origin.The reason of RRC connection re-establishment comprises handoff failure, reconfiguration failure or other failure.Now UE is by all RB that hang up except SRB0, replacement media access control layer (Medium Access Control, MAC) and wireless chain control layer (Radio Link Control, RLC).
2, receive after RRC Connection Reestablishment Request base station, according to the C-RNTI of cell-of-origin and physical district ID, search the contextual information of this UE, if there is no contextual information, cannot carry out RRC connection re-establishment, return to RRC and re-establish 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 base station, if RRC is also returned in integrity protection failure, re-establishes the refusal grace " RRC Connection Reestablishment Reject " that disappears.
3, base station lookups, to the contextual information of this UE and by after integrity verification, is returned to RRC and is re-established Indication message " RRC Connection Reestablishment ".UE receives after RRC connection re-establishment Indication message, according to security configuration, carries out safe activation, then recovers SRB1 connection according to wireless resource configuration.
4, UE sends RRC connection RRC and has re-established message " RRC Connection Reestablishment Complete ", completes RRC connection re-establishment process.
Existing agreement has illustrated 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 agreement and scheme and the principle of undeclared processing, does not provide concrete implementation.
summary of the invention
Method, Apparatus and system that the embodiment of the present invention provides a kind of RRC of re-establishing to connect.With thinking that base station side realizes RRC connection re-establishment corresponding method flow is provided.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
Re-establish the method that RRC connects, comprising:
Rrc layer in base station carries out in the process of random access at user terminal, for this user terminal is distributed in as re-establishing the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and the first index using in the community of 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 is used in cell-of-origin in this RRC connection re-establishment request message;
Rrc layer receives the RRC connection re-establishment request message that user terminal sends, and returns to RRC connection re-establishment Indication message;
Rrc layer is based on triggering the reason of RRC connection re-establishment and re-establishing object, to the protocal layers of local bottom, sends respectively the primitive connecting for re-establishing RRC, and indication protocal layers re-establish signaling link;
Rrc layer receives RRC connection re-establishment that user terminal sends while completing message, determines the superfluous one-tenth of RRC connection re-establishment;
Wherein, if user terminal re-establishes because radio jink failure triggers RRC, and re-establishing object is the agreement permission community in source base station, rrc layer receives described RRC and re-establishes after request message, according to source C-RNTI and source physical district ID, search the user's context of user terminal, obtain user terminal and in cell-of-origin, distributed the source index obtaining, and the cell-of-origin index that obtains distributing in source base station of cell-of-origin.
Re-establish the device that RRC connects, be positioned at rrc layer, it is characterized in that, comprising:
Allocation units, for carry out the process of random access at user terminal, for this user terminal is distributed in as re-establishing the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and the first index using in the community of 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 is used in cell-of-origin in this RRC connection re-establishment request message;
Communication unit, the RRC connection re-establishment request message sending for receiving user terminal, and return to RRC connection re-establishment Indication message, and when the RRC connection re-establishment that receives user terminal transmission completes message, determine that RRC connection re-establishment completes;
Control unit, for sending at described communication unit after RRC connection re-establishment Indication message, based on triggering the reason of RRC connection re-establishment and re-establishing object, to the protocal layers of local bottom, send respectively the primitive connecting for re-establishing RRC, indication protocal layers re-establish signaling link;
Wherein, if user terminal re-establishes because radio jink failure triggers RRC, and re-establishing object is the agreement permission community in source base station, described communication unit receives described RRC and re-establishes after request message, according to source C-RNTI and source physical district ID, search the user's context of user terminal, obtain user terminal and in cell-of-origin, distributed the source index obtaining, and the cell-of-origin index that obtains distributing in source base station of cell-of-origin.
Re-establish the system that RRC connects, comprise some base stations and user terminal, it is characterized in that, wherein,
Rrc layer in described base station carries out in the process of random access at user terminal, for this user terminal is distributed in as re-establishing the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and the first index using in the community of object, indicating user terminal sends RRC connection re-establishment request message based on a C-RNTI, in this RRC connection re-establishment request message, further carry source C-RNTI and cell-of-origin physical I D that user terminal is used in cell-of-origin, and the RRC connection re-establishment request message that receives user terminal transmission, and return to RRC connection re-establishment Indication message, and based on triggering the reason of RRC connection re-establishment and re-establishing object, protocal layers to local bottom send respectively the primitive connecting for re-establishing RRC, indication protocal layers re-establish signaling link, and when the RRC connection re-establishment that receives user terminal transmission completes message, determine that RRC connection re-establishment completes, wherein, if user terminal re-establishes because radio jink failure triggers RRC, and re-establishing object is the agreement permission community in source base station, rrc layer receives described RRC and re-establishes after request message, according to source C-RNTI and source physical district ID, search the user's context of user terminal, obtain user terminal and in cell-of-origin, distributed the source index obtaining, and the cell-of-origin index that obtains distributing in source base station of cell-of-origin.
In the embodiment of the present invention, the specific implementation that base station side in LTE system realizes RRC connection re-establishment has been proposed, wherein, the rrc layer of base station side is according to triggering the reason of RRC connection re-establishment and re-establishing the difference of object, protocal layers to local bottom send the primitive connecting for re-establishing RRC in different ways, indication protocal layers re-establish signaling link, thereby realized re-establishing that RRC connects, perfect in agreement about the related procedure of RRC connection re-establishment, realize the recovery of signaling link, guaranteed stability and the reliability of communication.
accompanying drawing explanation
Figure 1A is RRC connection re-establishment success schematic flow diagram under prior art;
Figure 1B is RRC connection re-establishment failure schematic flow diagram under prior art;
Fig. 2 A is communication system architectural framework figure in the embodiment of the present invention;
Fig. 2 B is the control device functional structure chart that is positioned at rrc layer in the embodiment of the present invention in base station;
Fig. 3-Fig. 5 is three kinds of mode flow charts realizing RRC connection re-establishment in the embodiment of the present invention.
Embodiment
In adopting the LTE system of TD technology, inside of base station is divided into a plurality of protocol layers, as, physical layer (PHY), media access control layer (MAC), wireless link are controlled (RLC), packet data convergence protocol (PDCP), and radio resource control layer (RRC), wherein, PHY layer is called the laminated layer 2 that is called of layer 1, MAC layer, RCL layer and PDCP, and rrc layer is called layer 3, for rrc layer, the protocal layers in layer 1 and layer 2 are considered as the bottom of layer 3.
In the present embodiment, the specific implementation that realizes RRC connection re-establishment in base station side is provided, comprise: the rrc layer in base station receives the RRC connection re-establishment request message that user terminal sends, and return to RRC connection re-establishment Indication message, rrc layer sends respectively to the protocal layers of local bottom the primitive connecting for re-establishing RRC, indication protocal layers re-establish signaling link, and, rrc layer receives RRC connection re-establishment that user terminal sends while completing message, determines that RRC connection re-establishment completes.
In practical application, application scenarios is not identical, and the mode that realizes RRC connection reconstruction is not identical yet, in the embodiment of the present invention, and several application scenarioss below main existence:
1) thus UE carries out minizone handoff failure triggers RRC connection re-establishment.
UE carries out minizone handoff failure, can be handoff failure between the community being connected based on X2 or S1 interface between different base station, can be also handoff failure between Nei community, same base station.
UE triggers RRC connection reconstruction immediately because of minizone handoff failure, and it re-establishes object can be cell-of-origin, prepare collection community or agreement allows community.Wherein, cell-of-origin is that UE carries out minizone handoff failure resident community before, and preparing collection community is that the permission UE recording in the local configuration information of UE switches the community of accessing, and agreement allows Shi Fei cell-of-origin, community, non-preparation collection community, but the community that allows UE to access according to consensus standard.In following examples, all adopt foregoing description mode, will repeat no more.
2) thus UE carries out business reconfiguration failure triggers RRC connection re-establishment.
UE carries out business reconfiguration failure, operation failure in the time of can being newly-built, configuration parameter that delete or revise certain business.
UE triggers RRC connection reconstruction immediately because of business reconfiguration failure, and it re-establishes object can be that cell-of-origin or agreement allow community.
3) thus UE triggers RRC connection re-establishment because of radio jink failure.
UE, when bottom detects signaling link or service link fault, can notify high level, and carries out RRC connection re-establishment.As, RLC transfer of data reaches maximum retransmission.
UE triggers RRC connection reconstruction immediately because of radio jink failure, and it re-establishes object can be that cell-of-origin or agreement allow community.
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 present invention, for re-establishing in the communication system that RRC connects, comprise some base stations and UE, wherein, rrc layer in described base station receives the RRC connection re-establishment request message that user terminal sends, and return to RRC connection re-establishment Indication message, and send respectively to the protocal layers of local bottom the primitive connecting for re-establishing RRC, indication protocal layers re-establish signaling link, and when the RRC connection re-establishment that receives user terminal transmission completes message, determine that RRC connection re-establishment completes.
Consult shown in Fig. 2 B, in the embodiment of the present invention, for re-establishing the device that RRC connects (as, the rrc layer module in base station), comprise communication unit 20 and control unit 21, wherein,
Communication unit 20, the RRC connection re-establishment request message sending for receiving user terminal, and return to RRC connection re-establishment Indication message, and when the RRC connection re-establishment that receives user terminal transmission completes message, determine that RRC connection re-establishment completes;
Control unit 21, for sending at communication unit 20 after RRC connection re-establishment Indication messages, sends respectively to the protocal layers of local bottom the primitive connecting for re-establishing RRC, and indication protocal layers re-establish signaling link.
As shown in Figure 2 B, in said apparatus, further comprise allocation units 22, before receiving the RRC connection re-establishment request message of user terminal transmission at communication unit 20, at user terminal, carry out in the process of random access, for this user terminal is distributed in as re-establishing the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and the first index using in the community of object, indicating user terminal sends RRC connection re-establishment request message based on a C-RNTI, in this RRC connection re-establishment request message, further carry source C-RNTI and cell-of-origin physical I D that user terminal is used in cell-of-origin.
In following examples, for ease of describing, by each layer of module in base station referred to as PHY layer module, MAC layer module, rlc layer module, PDCP layer module and rrc layer module.
Based on said system framework, consult shown in Fig. 3, in the present embodiment, in the first situation, with UE, because carrying out minizone handoff failure, trigger RRC connection re-establishment, and re-establish to as if source base station in preparation collection community (can be also preparation integrate community) in non-source base station as example, introducing base station, to carry out the detailed process of RRC connection re-establishment as follows:
The object that re-establishes of UE is while preparing collection community, because the preparation collection community in base station had just completed distribution and the configuration of base station resource before UE initiation RRC re-establishes flow process, therefore, although can there is resource rollback in UE, but the resource that can utilize base station to be configured, simplifies handling process.
Step 301:MAC layer module receives the random access request message (Random Access) that UE sends.
Step 302:MAC layer module carried out C-RNTI request (C-RNTI Request) according to the pilot code of carrying in random access request message (Preamble) to rrc layer module.
Step 303:RRC layer module is distributed in for UE the interim wireless network identification in community and the index of preparing use in collection community again, and note is C-RNTI respectively
*and UEIndexCell
*, and return to C-RNTI response (C-RNTI Response) to MAC layer module.
Why rrc layer module redistributes C-RNTI
*and UEIndexCell
*, be because rrc layer module now can not judge the identity of UE, do not know this UE state in RRC connects in the past, can unify to process as newly setting up RRC connection.Preparatory stage before the handoff failure of minizone, owing to having completed the resource distribution of UE in this preparation collection community, therefore for this UE, there is the C-RNTI and the UEIndexCell that use that has distributed acquisition in preparing collection community, now, just there is C-RNTI and C-RNTI in this preparation collection community in UE
*, totally 2 Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, and there is UEIndexCell and UEIndexCell in this preparation collection community
*, totally 2 index, need to rationally solve.
Step 304:MAC layer module sends accidental access response message (Random Access Response) to UE, by this accidental access response message by 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, before also needing to carry in RRC connection re-establishment request message and accessing at random, the source C-RNTI that UE is used in cell-of-origin and cell-of-origin physical I D.
Rrc layer module receives and re-establishes after request message, according to source C-RNTI and cell-of-origin physical I D, searches the user's context of the UE in base station, finds the original state of this UE and resource.Because UE is preparing collection community 2 index of existence and 2 Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, for avoiding confusion, with UE, the unique index UEIndexEnb in base station identifies this UE to rrc layer module.
Step 306:RRC layer module sends RRC connection re-establishment Indication message (RRC Connection Reestablishment) to UE.
UE receives after RRC connection re-establishment Indication message, and the RRC that just can start to carry out UE side re-establishes flow process, mainly comprises according to content configuration safety and signaling link in RRC connection re-establishment message, sends afterwards RRC connection re-establishment complete message to base station.
And rrc layer module sends after RRC connection re-establishment Indication message, just in base station side, start to carry out RRC and re-establish flow process.
Step 307:RRC layer module sends PDCP suspended primitive (PDCP Suspend) to PDCP layer module, and indication PDCP layer module enters suspended state, suspends the bag that transmits and receive data on service link.
PDCP layer receives after PDCP suspended primitive, for affirmation mode (AM pattern), will keep the state of packet, and the follow-up supervention of Wait-to-Restore send.
Step 308:RRC layer module sends RLC reset primitive (RLC Reset) to rlc layer module, and indication rlc layer module resets, and empties counter, returns to initial condition.
Step 309:RRC layer module sends MAC to MAC layer module and reshuffles primitive (MAC Reconfiguration), and indication MAC layer module carried out parameter reconfiguration and put.
MAC layer module receives MAC and reshuffles after primitive, adopts C-RNTI
*replace C-RNTI, and delete UEIndexCell
*.
Step 310:RRC layer module sends PHY to PHY layer module and reshuffles primitive (PHY Reconfiguration), and indication PHY layer module carried out parameter reconfiguration and put.
PHY layer module receives PHY and reshuffles after primitive, adopts C-RNTI
*replace C-RNTI, and delete UEIndexCell
*, like this, just set up C-RNTI
*and the one-to-one relationship between UEIndexCell, can continue to use the UEIndexCell of the front preparatory stage distribution of handoff failure and the preparation collection local resource of configuration, simplify handling process.Reduce signaling consumption, accelerated speed and the success rate of RRC connection re-establishment.
Above-mentioned steps 307-step 310 is that the base station side redesigning in the present invention is rebuild the flow process that RCC connects, and re-establishes SRB1 dedicated signaling link.
Step 311:RRC layer module sends PDCP security configuration primitive (PDCP Security Config) to PDCP layer module, and indication PDCP layer module carried out security configuration and activate PDCP layer module, to coordinate UE side to complete RRC connection re-establishment process.
The RRC connection re-establishment that step 312:RRC layer module receives UE transmission completes message (RRC Connection Reestablishment Complete), determines that RRC connection re-establishment has completed.
Step 313:RRC layer module sends RRC connection to UE side and reshuffles Indication message (RRC Connection Reconfiguration), with the service link of configuration UE.
UE side joint receives that the RRC that rrc layer module sends connects after reconfiguration message, connects the content configuration service link of reconfiguration message according to RRC, after having configured, sends RRC connection and has reshuffled message.
Step 314:RRC layer module sends PDCP to local PDCP layer module and recovers primitive (PDCP Resume), be used to indicate PDCP layer recovers from suspended state, start the bag that transmits and receive data on service link, to coordinate the recovery of UE side finishing service link.
The RRC that step 315:RRC layer module receives UE transmission has reshuffled message (RRC Connection Reconfiguration Complete), confirms that the flow process of reshuffling that RRC connection re-establishment triggers finishes.Now, the service link DRB between base station side and UE side also recovers.
In above-described embodiment, owing to carrying out RRC connection reconstruction immediately, UE re-establishes liking the preparation collection community in base station, therefore, subsequent treatment can have been switched processing according to minizone in base station, the access implementation procedure of lower floor needn't be concerned about in upper strata, and upper strata needn't be concerned about that UE access preparation collects community and switched access or accessed by RRC connection re-establishment, simplifies upper strata handling process.
On the other hand, in the situation that UE triggers RRC connection re-establishment because of business reconfiguration failure or radio jink failure, do not exist and prepare collection community, therefore, without the corresponding flow process of design, do not repeat them here.
Be different from above-described embodiment, consult shown in Fig. 4, in the present embodiment, in the second situation, with UE, because carrying out business reconfiguration failure, trigger RRC connection re-establishment, and re-establish to as if source base station in cell-of-origin be example, introducing base station, to carry out the detailed process of RRC connection re-establishment as follows:
Due to business reconfiguration failure having occurred, therefore in system, there will be resource rollback, for convenience of explanation, suppose that UE has set up carrying SRB1 and DRB3 (service link 3), 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 sends RRC connection to UE and reshuffles Indication message (RRC Connection Reconfiguration), and to UE distributing radio resource, notice is set up DRB4 based on newly assigned resource UE.
In step 401-step 405, rrc layer module sends PDCP configuration primitive (PDCP Config) to PDCP layer module, to rlc layer module, send rlc layer configuration primitive (RLC Config), to MAC layer module, send MAC layer configuration primitive (MAC Config), and send PHY layer configuration primitive (PHY Config) to PHY layer module, for base station side configuration PDCP layer, rlc layer, MAC layer and PHY layer for setting up the resource of DRB4, to coordinate UE to complete the foundation of DRB4.
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 random access request message (Random Access) that UE sends.In the present embodiment, what suppose the random access of UE request is cell-of-origin.
Step 407:MAC layer module carried out C-RNTI request (C-RNTI Request) according to the pilot code of carrying in random access request message (Preamble) to rrc layer module.
Step 408:RRC layer module is distributed in for UE the interim wireless network identification in community and the index using in cell-of-origin again, and note is C-RNTI respectively
*and UEIndexCell
*, and return to C-RNTI response (C-RNTI Response) to MAC layer module.
Why rrc layer module redistributes C-RNTI
*and UEIndexCell
*, be because rrc layer module now can not judge the identity of UE, do not know this UE state in RRC connects in the past, can unify to process as newly setting up RRC connection.Preparatory stage before business reconfiguration failure, owing to having completed the resource distribution of UE in cell-of-origin, therefore in UE, have the source C-RNTI using and the source UEIndexCell that has distributed acquisition in cell-of-origin, now, just there is source C-RNTI and C-RNTI in this cell-of-origin in UE
*, totally 2 Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, and in this cell-of-origin, there is source UEIndexCell and UEIndexCell
*, totally 2 index, need to rationally solve.
Step 409:MAC layer module sends accidental access response message (Random Access Response) to UE, by this accidental access response message by 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, before also needing to carry in RRC connection re-establishment request message and accessing at random, the source C-RNTI that UE is used in cell-of-origin and cell-of-origin physical I D.
Rrc layer module receives and re-establishes after request message, according to source C-RNTI and cell-of-origin physical I D, searches the user's context of the UE in base station, finds the 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 cell-of-origin, for avoiding confusion, with UE, the unique index UEIndexEnb in base station identifies this UE to rrc layer module.
Step 411:RRC layer module sends RRC connection re-establishment Indication message (RRC Connection Reestablishment) to UE.
UE receives after RRC connection re-establishment Indication message, and the RRC that just can start to carry out UE side re-establishes flow process.
And rrc layer module sends after RRC connection re-establishment Indication message, just in base station side, start to carry out RRC connection re-establishment flow process.
Step 412:RRC layer module sends PDCP suspended primitive (PDCP Suspend) to PDCP layer module, and indication PDCP layer enters suspended state, suspends the bag that transmits and receive data on DRB3.
Step 413:RRC layer module sends RLC reset primitive (RLC Reset) to rlc layer module, and indication rlc layer module resets, and empties counter, returns to initial condition.
Step 414:RRC layer module sends MAC to MAC layer module and reshuffles primitive (MAC Reconfiguration), and indication MAC layer module carried out parameter reconfiguration and put.
MAC layer module receives MAC and reshuffles after primitive, adopts C-RNTI
*replacement source C-RNTI, and delete UEIndexCell
*.
Step 415:RRC layer module sends PHY to PHY layer module and reshuffles primitive (PHY Reconfiguration), and indication PHY layer module carried out parameter reconfiguration and put.
PHY layer module receives PHY and reshuffles after primitive, adopts C-RNTI
*replace C-RNTI, and delete UEIndexCell
*, like this, just set up C-RNTI
*and the one-to-one relationship between the UEIndexCell of source, use business be can continue and the UEIndexCell of preparatory stage distribution before and the cell-of-origin resource of configuration reshuffled.
Above-mentioned steps 412-step 415 is that the base station side redesigning in the present invention is rebuild the flow process that RCC connects, and re-establishes SRB1 dedicated signaling link.
Step 416:RRC layer module sends to PDCP layer module, PDCP security configuration primitive (PDCP Security Config), and indication PDCP layer module carried out security configuration and activates PDCP layer module, to coordinate UE side to complete RRC connection re-establishment process.
The RRC connection re-establishment that step 417:RRC layer module receives UE transmission completes message (RRCConnection Reestablishment Complete), determines that RRC connection re-establishment has completed.
Step 418:RRC layer module sends RRC connection to UE and reshuffles Indication message (RRC Connection Reconfiguration), for the underlying resource of configuration UE, to recover the service link of UE.
In the present embodiment, due to business reconfiguration failure, therefore, need to there is resource rollback in UE, and when resource rollback, bottom has not rollback of part resource, need to reconfigure.
On the other hand, because base station has configured SRB1, DRB3 and DRB4 in the cell-of-origin of UE, and UE is according to protocol description generation resource rollback, only disposes SRB1 and DRB3, in order to keep resource consistence, need to reconfigure base station side resource.In base station side, adopt the mode of reverse configuration, delete DRB4, the mode that can describe according to step 419-step 422 is carried out base station side resource reconfiguration.
Step 419:RRC layer module sends PDCP configuration primitive (PDCP Config) to PDCP layer module, and indication PDCP layer module recovered from suspended state, activates DRB3, starts to transmit and receive data bag on DRB3, deletes DRB4 service link simultaneously.
Step 420:RRC layer module sends RLC configuration primitive (RLC Config) to rlc layer module, and indication rlc layer module is deleted DRB4 service link.
Step 421:RRC layer module sends MAC configuration primitive (MAC Config) to MAC layer module, and indication MAC layer module deleted DRB4 service link.
Step 422:RRC layer module sends PHY configuration primitive (PHY Config) to PHY layer module, and indication PHY layer module deleted DRB4 service link.
By above-mentioned steps 419-step 422, RRC module has been deleted after the configuration parameter of DRB4, activates the suspended state of DRB3 simultaneously.Reduce like this impact for the built business DRB3 that sets up one's own business, improved communication quality.
Step 423: the RRC that base station receives UE transmission has reshuffled message (RRC Connection Reconfiguration Complete), confirms that the flow process of reshuffling that RRC connection re-establishment triggers finishes.Now, the service link DRB3 between base station side and UE side also recovers.
In the present embodiment, for UE, because carrying out minizone handoff failure or radio jink failure, trigger RRC connection re-establishment, and re-establish the situation that object is cell-of-origin, similar with above-mentioned flow process, only need carry out corresponding operating for DRB3, no longer need newly-built failed DRB4 carrying to operate, do not repeat them here.
On the other hand, above-described embodiment is to take business reconfiguration failure to be introduced as " setting up new business link failure " as example, in practical application, if business reconfiguration failure is " deleting service link failure ",, in step 418-step 423, rrc layer module need to be indicated respectively PDCP layer module, rlc layer module, MAC layer module and the failed service link of the newly-built deletion of PHY layer module; If business reconfiguration failure be the configuration failure of service link " revise " in step 418-step 423, rrc layer module need to indicate respectively PDCP layer module, rlc layer module, MAC layer module and PHY layer module by the configuration restore of revising failed service link to the state before revising.In a word, because business reconfiguration failure triggers RRC connection reconstruction immediately, base station side need to connect the mode that adopts reverse configuration in reconfiguration course by the RRC after 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 Fig. 5, in the present embodiment, in the third situation, with UE, trigger RRC connection re-establishment because of radio jink failure, and re-establish to as if source base station in agreement to allow community be example, introducing base station, to carry out the detailed process of RRC connection re-establishment as follows:
UE is under connection status, detect after radio jink failure, there is RRC connection re-establishment and be linked into agreement permission community, owing to allowing in community in agreement, it is not UE Resources allocation, therefore in RRC connection re-establishment process, to after RRC connection re-establishment, trigger RRC and connect reconfiguration course for UE configures SRB1 resource, be UE configuration DRB resource.
Step 501:MAC layer module receives the random access request message (Random Access) that UE sends.
Step 502:MAC layer module carried out C-RNTI request (C-RNTI Request) according to the pilot code of carrying in random access request message (Preamble) to rrc layer module.
Step 503:RRC layer module is that UE is distributed in the interim wireless network identification in community and the index that agreement allows use in community, and note is C-RNTI respectively
*and UEIndexCell
*, and return to C-RNTI response (C-RNTI Response) to MAC layer module.
Why rrc layer module distributes C-RNTI
*and UEIndexCell
*, be because rrc layer module now can not judge the identity of UE, do not know this UE state in RRC connects in the past, can unify to process as newly setting up RRC connection.
Step 504:MAC layer module sends accidental access response message (Random Access Response) to UE, by this accidental access response message by 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 rising.Further, before also needing to carry in this RRC connection re-establishment request message and accessing at random, the source C-RNTI that UE is used in cell-of-origin and cell-of-origin physical I D.
After rrc layer module receives, according to the source C-RNTI in RRC connection re-establishment request message and cell-of-origin physical I D, search the user's context of the UE in base station, find the original state of this UE and resource, obtain the source UEIndexCell corresponding with source C-RNTI, and the index in source base station is designated as OldCellIndexEnb by cell-of-origin, the source UEIndexCell by UE in cell-of-origin is designated as OldUEIndexCell.
Step 506:RRC layer module sends RRC connection re-establishment Indication message (RRC Connection Reestablishment) to UE.
Step 507:RRC layer module sends PDCP configuration primitive (PDCP Config) to PDCP layer module, and indication PDCP module allows community to set up SRB1 dedicated signaling link in agreement.
SRB and DRB are concepts in logic, are to process for a class business datum of a UE being sorted out and being unified, and only need logically set up, and do not need to carry out other concrete operations.
Step 508:RRC layer module sends RLC configuration primitive (RLC Config) to rlc layer module, and indication RLC module allows community to set up SRB1 dedicated signaling link in agreement.
Step 509:RRC layer module sends MAC configuration primitive (MAC Config) to MAC layer module, and indication MAC module allows community to set up SRB1 dedicated signaling link in agreement.
Step 510:RRC layer module sends 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 redesigning in the present invention is rebuild the flow process that RCC connects, and re-establishes SRB1 dedicated signaling link.
Step 511:RRC layer module sends to PDCP layer module, PDCP security configuration primitive (PDCPSecurity Config), and indication PDCP layer module carried out security configuration and activates PDCP layer, to coordinate UE side to complete RRC connection re-establishment process.
The RRC connection re-establishment that step 512:RRC layer module receives UE transmission completes message (RRC Connection Reestablishment Complete), determines that RRC connection re-establishment has completed.
Step 513:RRC layer module sends RRC connection to UE side and reshuffles Indication message (RRCConnection Reconfiguration), with the service link of configuration UE.
UE side joint receives that the RRC that rrc layer module sends connects after reconfiguration message, need to configure DRB service link, sends afterwards RRC connection and has reshuffled message.
Step 514:RRC layer module sends PDCP configuration primitive (PDCP Config) to PDCP layer module, and indication PDCP layer module set up DRB service link.
PDCP layer module is for encryption and decryption and the head compression of packet.Setting up service link is exactly to carry out encryption and decryption and head compression processing for the packet unification on service link.
Step 515:RRC layer module sends RLC configuration primitive (RLC Config) to rlc layer module, and indication rlc layer module is set up DRB service link.
Step 516:RRC layer module sends MAC configuration primitive (MAC Config) to MAC layer module, and indication MAC layer module set up DRB service link.
Step 517:RRC layer module sends PHY configuration primitive (PHY Config) to PHY layer module, the link circuit resource of configuration DRB service link.
By 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 UE transmission has reshuffled message (RRC Connection Reconfiguration Complete), confirms that the flow process of reshuffling that RRC connection re-establishment triggers finishes.
Meanwhile, rrc layer module also needs by cell-of-origin index OldCellIndexEnb and UE index OldUEIndexCell deletion UE resource in cell-of-origin in cell-of-origin in base station.
On the other hand, for UE, because carrying out minizone handoff failure or business, reshuffle and trigger RRC connection re-establishment, and re-establishing object is the situation of the agreement permission community in source base station, similar with above-mentioned flow process, because agreement allows community all to reconfigure, all the same in various situations, do not repeat them here.
In sum, in the embodiment of the present invention, the specific implementation that base station side in LTE system realizes RRC connection re-establishment has been proposed, wherein, the rrc layer of base station side is according to triggering the reason of RRC connection re-establishment and re-establishing the difference of object, protocal layers to local bottom send the primitive connecting for re-establishing RRC in different ways, indication protocal layers re-establish signaling link, thereby realized re-establishing that RRC connects, perfect in agreement about the related procedure of RRC connection re-establishment, realized the recovery of signaling link, stability and the reliability of communication have been guaranteed.Further, the reset mode of the service link corresponding with the reset mode of signaling link has also been proposed, after RRC connection re-establishment completes according to triggering the reason of RRC connection re-establishment and re-establishing the difference of object, adopt different flow processs to complete the recovery to service link, further guarantee stability and the reliability of communication.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (23)
1. re-establish the method that radio resource control RRC connects, it is characterized in that, comprising:
Rrc layer in base station carries out in the process of random access at user terminal, for this user terminal is distributed in as re-establishing the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and the first index using in the community of 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 is used in cell-of-origin in this RRC connection re-establishment request message;
Rrc layer receives the RRC connection re-establishment request message that user terminal sends, and returns to RRC connection re-establishment Indication message;
Rrc layer is based on triggering the reason of RRC connection re-establishment and re-establishing object, to the protocal layers of local bottom, sends respectively the primitive connecting for re-establishing RRC, and indication protocal layers re-establish signaling link;
Rrc layer receives RRC connection re-establishment that user terminal sends while completing message, determines that RRC connection re-establishment completes;
Wherein, if user terminal re-establishes because radio jink failure triggers RRC, and re-establishing object is the agreement permission community in source base station, rrc layer receives described RRC and re-establishes after request message, according to source C-RNTI and source physical district ID, search the user's context of user terminal, obtain user terminal and in cell-of-origin, distributed the source index obtaining, and the cell-of-origin index that obtains distributing in source base station of cell-of-origin.
2. the method for claim 1, it is characterized in that, if user terminal is because of minizone handoff failure triggering RRC connection re-establishment, and re-establish object for preparing collection community, rrc layer receives described RRC and re-establishes after request message, the source C-RNTI carrying according to it and cell-of-origin physical I D search the user's context of user terminal, obtain user terminal and in described preparation collection community, have distributed the 2nd C-RNTI and the second index obtaining.
3. method as claimed in claim 2, it is characterized in that, described rrc layer is based on triggering the reason of RRC connection re-establishment and re-establishing object, to the protocal layers of local bottom, sends respectively the primitive connecting for re-establishing RRC, indication protocal layers re-establish signaling link, comprising:
To PDCP PDCP layer, send PDCP suspended primitive, be used to indicate PDCP layer and suspend the bag that transmits and receive data;
To wireless link, control rlc layer and send RLC reset primitive, be used to indicate rlc layer and return to initial condition;
To media access control MAC layer, send MAC and reshuffle primitive, be used to indicate MAC layer and adopt a C-RNTI to replace the 2nd C-RNTI, delete the first index simultaneously;
To physics PHY layer, send PHY and reshuffle primitive, be used to indicate PHY layer and adopt a C-RNTI to replace the 2nd C-RNTI, delete the first index, to set up the mapping relations between a C-RNTI and the second index simultaneously.
4. the method for claim 1, it is characterized in that, if user terminal re-establishes because business reconfiguration failure triggers RRC, and re-establishing object is cell-of-origin, rrc layer receives described RRC and re-establishes after request message, the user's context of searching user terminal according to source C-RNTI and source physical district ID, obtains user terminal and in described cell-of-origin, has distributed the source index obtaining.
5. method as claimed in claim 4, it is characterized in that, described rrc layer is based on triggering the reason of RRC connection re-establishment and re-establishing object, to the protocal layers of local bottom, sends respectively the primitive connecting for re-establishing RRC, indication protocal layers re-establish signaling link, comprising:
To PDCP PDCP layer, send PDCP suspended primitive, be used to indicate PDCP layer and before business is reshuffled, on already present service link, suspend the bag that transmits and receive data;
To wireless link, control rlc layer and send RLC reset primitive, be used to indicate rlc layer and return to initial condition;
To media access control MAC layer, send MAC and reshuffle primitive, be used to indicate MAC layer and adopt a C-RNTI to replace source C-RNTI, delete the first index simultaneously;
To physics PHY layer, send PHY and reshuffle primitive, be used to indicate PHY layer and adopt a C-RNTI to replace source C-RNTI, delete the first index, to set up the mapping relations between a C-RNTI and source index simultaneously.
6. the method for claim 1, is characterized in that, described rrc layer, based on triggering the reason of RRC connection re-establishment and re-establishing object, is controlled primitive to the protocal layers transmission of local bottom, and indication protocal layers re-establish signaling link, comprising:
To PDCP PDCP layer, send PDCP configuration primitive, be used to indicate PDCP layer and allow community to set up signaling link in agreement;
To wireless link, control rlc layer and send RLC configuration primitive, be used to indicate rlc layer and allow community to set up the modern link of letter in agreement;
To media access control MAC layer, send MAC configuration primitive, be used to indicate MAC layer and allow community to set up signaling link in agreement;
To physics PHY layer, send PHY configuration primitive, be used to indicate PHY layer and in agreement, allow the link circuit resource of the modern link of letter that cell configuration set up.
7. the method as described in claim 1,2 or 4, is characterized in that, described rrc layer comprises after determining that RRC connection re-establishment completes:
To user terminal, send RRC connection and reshuffle Indication message;
Based on triggering the reason of RRC connection re-establishment and re-establishing object, at least one protocol layer transmission of local bottom, be used for recovering the primitive of service link, described at least one protocol layer of indication recovers service link;
Receive the RRC that user terminal returns and connect while having reshuffled message, determine that service link recovers.
8. method as claimed in claim 7, it is characterized in that, if user terminal is because of minizone handoff failure triggering RRC connection re-establishment, and re-establish object for preparing collection community, described rrc layer is based on triggering the reason of RRC connection re-establishment and re-establishing object, at least one protocol layer to local bottom sends for recovering the primitive of service link, and described at least one protocol layer of indication recovers service link, comprising:
To local PDCP layer, send PDCP and recover primitive, be used to indicate the PDCP layer bag that starts to transmit and receive data.
9. method as claimed in claim 7, it is characterized in that, if user terminal re-establishes because business reconfiguration failure triggers RRC, and re-establishing object is cell-of-origin, described rrc layer is based on triggering the reason of RRC connection re-establishment and re-establishing object, at least one protocol layer to local bottom sends for recovering the primitive of service link, and described at least one protocol layer of indication recovers service link, comprising:
To local PDCP layer, send PDCP configuration primitive, be used to indicate PDCP layer and start the bag that transmitted and receive data on already present service link before business is reshuffled, and the service link of setting up in the business of deletion reconfiguration course, the service link of deleting in reconstruction business reconfiguration course, or the configuration of the service link of revising in the business of recovery reconfiguration course;
To local rlc layer, send RLC configuration primitive, be used to indicate rlc layer and delete the service link of setting up in business reconfiguration course, rebuild the service link of deleting in business reconfiguration course, or the configuration of the service link of revising in the business of recovery reconfiguration course;
To local MAC layer, send MAC and reshuffle primitive, be used to indicate MAC layer and delete the service link of setting up in business reconfiguration course, the service link of deleting in reconstruction business reconfiguration course, or the configuration of the service link of revising in the business of recovery reconfiguration course;
To local PHY layer, send PHY and reshuffle primitive, be used to indicate PHY layer and delete the service link of setting up in business reconfiguration course, the service link of deleting in reconstruction business reconfiguration course, or the configuration of the service link of revising in the business of recovery reconfiguration course.
10. method as claimed in claim 7, it is characterized in that, if user terminal re-establishes because radio jink failure triggers RRC, and re-establishing object is the agreement permission community in source base station, described rrc layer is based on triggering the reason of RRC connection re-establishment and re-establishing object, at least one protocol layer to local bottom sends for recovering the primitive of service link, and described at least one protocol layer of indication recovers service link, comprising:
To local PDCP layer, send PDCP configuration primitive, be used to indicate PDCP layer and set up service link;
To local rlc layer, send RLC configuration primitive, be used to indicate rlc layer and set up service link;
To local MAC layer, send MAC configuration primitive, be used to indicate MAC layer and set up service link;
To local PHY layer, send PHY configuration primitive, be used to indicate the link circuit resource that PHY layer configures the service link of having set up.
11. methods as claimed in claim 10, it is characterized in that, described rrc layer receives the RRC that user terminal returns and connects while having reshuffled message, determines that service link recovers, and deletes the resource of user terminal in cell-of-origin based on described source index and cell-of-origin index.
12. 1 kinds re-establish the device that radio resource control RRC connects, and are positioned at rrc layer, it is characterized in that, comprising:
Allocation units, for carry out the process of random access at user terminal, for this user terminal is distributed in as re-establishing the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and the first index using in the community of 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 is used in cell-of-origin in this RRC connection re-establishment request message;
Communication unit, the RRC connection re-establishment request message sending for receiving user terminal, and return to RRC connection re-establishment Indication message, and when the RRC connection re-establishment that receives user terminal transmission completes message, determine that RRC connection re-establishment completes;
Control unit, for sending at described communication unit after RRC connection re-establishment Indication message, based on triggering the reason of RRC connection re-establishment and re-establishing object, to the protocal layers of local bottom, send respectively the primitive connecting for re-establishing RRC, indication protocal layers re-establish signaling link;
Wherein, if user terminal re-establishes because radio jink failure triggers RRC, and re-establishing object is the agreement permission community in source base station, described communication unit receives described RRC and re-establishes after request message, according to source C-RNTI and source physical district ID, search the user's context of user terminal, obtain user terminal and in cell-of-origin, distributed the source index obtaining, and the cell-of-origin index that obtains distributing in source base station of cell-of-origin.
13. devices as claimed in claim 12, it is characterized in that, if user terminal is because of minizone handoff failure triggering RRC connection re-establishment, and re-establish object for preparing collection community, described communication unit receives described RRC and re-establishes after request message, the user's context of searching user terminal according to source C-RNTI and cell-of-origin physical I D, obtains user terminal and in described preparation collection community, has distributed the 2nd C-RNTI and the second index obtaining.
14. devices as claimed in claim 13, it is characterized in that, described control unit is based on triggering the reason of RRC connection re-establishment and re-establishing object, protocal layers to local bottom send respectively the primitive connecting for re-establishing RRC, when indication protocal layers re-establish signaling link, carry out following operation:
To PDCP PDCP layer, send PDCP suspended primitive, be used to indicate PDCP layer and suspend the bag that transmits and receive data;
To wireless link, control rlc layer and send RLC reset primitive, be used to indicate rlc layer and return to initial condition;
To media access control MAC layer, send MAC and reshuffle primitive, be used to indicate MAC layer and adopt a C-RNTI to replace the 2nd C-RNTI, delete the first index simultaneously;
To physics PHY layer, send PHY and reshuffle primitive, be used to indicate PHY layer and adopt a C-RNTI to replace the 2nd C-RNTI, delete the first index, to set up the mapping relations between a C-RNTI and the second index simultaneously.
15. devices as claimed in claim 12, it is characterized in that, if user terminal re-establishes because business reconfiguration failure triggers RRC, and re-establishing object is cell-of-origin, described communication unit receives described RRC and re-establishes after request message, the user's context of searching user terminal according to source C-RNTI and source physical district ID, obtains user terminal and in described cell-of-origin, has distributed the source index obtaining.
16. devices as claimed in claim 15, it is characterized in that, described control unit is based on triggering the reason of RRC connection re-establishment and re-establishing object, protocal layers to local bottom send respectively the primitive connecting for re-establishing RRC, when indication protocal layers re-establish signaling link, carry out following operation:
To PDCP PDCP layer, send PDCP suspended primitive, be used to indicate PDCP layer and before business is reshuffled, on already present service link, suspend the bag that transmits and receive data;
To wireless link, control rlc layer and send RLC reset primitive, be used to indicate rlc layer and return to initial condition;
To media access control MAC layer, send MAC and reshuffle primitive, be used to indicate MAC layer and adopt a C-RNTI to replace source C-RNTI, delete the first index simultaneously;
To physics PHY layer, send PHY and reshuffle primitive, be used to indicate PHY layer and adopt a C-RNTI to replace source C-RNTI, delete the first index, to set up the mapping relations between a C-RNTI and source index simultaneously.
17. devices as claimed in claim 12, it is characterized in that, described control unit is based on triggering the reason of RRC connection re-establishment and re-establishing object, protocal layers to local bottom send respectively the primitive connecting for re-establishing RRC, when indication protocal layers re-establish signaling link, carry out following operation:
To PDCP PDCP layer, send PDCP configuration primitive, be used to indicate PDCP layer and allow community to set up the modern link of letter in agreement;
To wireless link, control rlc layer and send RLC configuration primitive, be used to indicate rlc layer and allow community to set up signaling link in agreement;
To media access control MAC layer, send MAC configuration primitive, be used to indicate MAC layer and allow community to set up signaling link in agreement;
To physics PHY layer, send PHY configuration primitive, be used to indicate PHY layer and in agreement, allow the link circuit resource of the signaling link that cell configuration set up.
18. devices as described in claim 12,13 or 15, it is characterized in that, after described communication unit layer determines that RRC connection re-establishment completes, to user terminal, send RRC connection and reshuffle Indication message, and connect while having reshuffled message receiving RRC that user terminal returns, determine that service link recovers; Described control unit sends RRC connection at described communication unit and reshuffles after Indication message, based on triggering the reason of RRC connection re-establishment and re-establishing object, at least one protocol layer to local bottom sends for recovering the primitive of service link, and described at least one protocol layer of indication recovers service link.
19. devices as claimed in claim 18, it is characterized in that, if user terminal is because of minizone handoff failure triggering RRC connection re-establishment, and re-establish object for preparing collection community, described control unit is based on triggering the reason of RRC connection re-establishment and re-establishing object, at least one protocol layer to local bottom sends for recovering the primitive of service link, when described at least one protocol layer of indication recovers service link, carries out following operation:
To local PDCP layer, send PDCP and recover primitive, be used to indicate the PDCP layer bag that starts to transmit and receive data.
20. devices as claimed in claim 18, it is characterized in that, if user terminal re-establishes because business reconfiguration failure triggers RRC, and re-establishing object is cell-of-origin, described control unit is based on triggering the reason of RRC connection re-establishment and re-establishing object, at least one protocol layer to local bottom sends for recovering the primitive of service link, when described at least one protocol layer of indication recovers service link, carries out following operation:
To local PDCP layer, send PDCP configuration primitive, be used to indicate PDCP layer and start the bag that transmitted and receive data on already present service link before business is reshuffled, and the service link of setting up in the business of deletion reconfiguration course, the service link of deleting in reconstruction business reconfiguration course, or the configuration of the service link of revising in the business of recovery reconfiguration course;
To local rlc layer, send RLC configuration primitive, be used to indicate rlc layer and delete the service link of setting up in business reconfiguration course, rebuild the service link of deleting in business reconfiguration course, or the configuration of the service link of revising in the business of recovery reconfiguration course;
To local MAC layer, send MAC and reshuffle primitive, be used to indicate MAC layer and delete the service link of setting up in business reconfiguration course, the service link of deleting in reconstruction business reconfiguration course, or the configuration of the service link of revising in the business of recovery reconfiguration course;
To local PHY layer, send PHY and reshuffle primitive, be used to indicate PHY layer and delete the service link of setting up in business reconfiguration course, the service link of deleting in reconstruction business reconfiguration course, or the configuration of the service link of revising in the business of recovery reconfiguration course.
21. devices as claimed in claim 18, it is characterized in that, if user terminal re-establishes because radio jink failure triggers RRC, and re-establishing object is the agreement permission community in source base station, described control unit is based on triggering the reason of RRC connection re-establishment and re-establishing object, at least one protocol layer to local bottom sends for recovering the primitive of service link, and described at least one protocol layer of indication recovers service link, carries out following operation:
To local PDCP layer, send PDCP configuration primitive, be used to indicate PDCP layer and set up service link;
To local rlc layer, send RLC configuration primitive, be used to indicate rlc layer and set up service link;
To local MAC layer, send MAC configuration primitive, be used to indicate MAC layer and set up service link;
To local PHY layer, send PHY configuration primitive, be used to indicate the link circuit resource that PHY layer configures the service link of having set up.
22. devices as claimed in claim 21, it is characterized in that, described communication unit receives the RRC that user terminal returns and connects while having reshuffled message, determine that service link recovers, described control unit is deleted the resource of user terminal in cell-of-origin based on described source index and cell-of-origin index.
23. 1 kinds re-establish the system that radio resource control RRC connects, and comprise some base stations and user terminal, it is characterized in that, wherein,
Rrc layer in described base station carries out in the process of random access at user terminal, for this user terminal is distributed in as re-establishing the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and the first index using in the community of object, indicating user terminal sends RRC connection re-establishment request message based on a C-RNTI, in this RRC connection re-establishment request message, further carry source C-RNTI and cell-of-origin physical I D that user terminal is used in cell-of-origin, and the RRC connection re-establishment request message that receives user terminal transmission, and return to RRC connection re-establishment Indication message, and based on triggering the reason of RRC connection re-establishment and re-establishing object, protocal layers to local bottom send respectively the primitive connecting for re-establishing RRC, indication protocal layers re-establish signaling link, and when the RRC connection re-establishment that receives user terminal transmission completes message, determine that RRC connection re-establishment completes, wherein, if user terminal re-establishes because radio jink failure triggers RRC, and re-establishing object is the agreement permission community in source base station, rrc layer receives described RRC and re-establishes after request message, according to source C-RNTI and source physical district ID, search the user's context of user terminal, obtain user terminal and in cell-of-origin, distributed the source index obtaining, and the cell-of-origin index that obtains distributing in source base station of cell-of-origin.
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