CN102348217B - Handoff procedure determines the method and system of target network element - Google Patents
Handoff procedure determines the method and system of target network element Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00835—Determination of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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Abstract
The invention discloses the method and system determining target network element in a kind of handoff procedure, after being included in cell reselection, subscriber equipment (UE) and gravity treatment network element are set up in connection procedure, carry the addressing information of target network element；Gravity treatment network element, according to setting up the addressing information of the target network element carried in connection procedure, sends Radio Link Failure RLF to target network element and indicates information.Pass through the inventive method, accurately have sent Radio Link Failure instruction information to target network element, ensure that the target network element realization to the judgement of handoff scenario, and ensure that the smooth realization of the self-optimization function of realization that concrete handoff parameter is optimized by network and network, thus improve network performance.
Description
Technical field
The present invention relates to the handoff technique in mobile communication system, a kind of handoff procedure determines the method and system of target network element.
Background technology
Long Term Evolution (LTE, LongTermEvolution) network is by the Universal Terrestrial Radio Access Network (E-UTRAN of evolution, EvolvedUTRAN), evolution base station (eNB, and evolution packet switching center (EPC EvolvedNodeB), EvolvedPacketCore) composition, network flattening.Wherein, E-UTRAN comprises the set of the eNB connected with EPC by S1 interface, can be connected by X2 between eNB.S1 interface, X2 interface are logic interfacing.One EPC can manage one or more eNB, an eNB and can also be controlled by multiple EPC, an eNB and can manage one or more community.
MANET (SON) is a kind of technology automatically carrying out network configuration and optimization.The feature of SON technology is self-configuring self-optimizing, the application in LTE of this technology, make LTE base station (i.e. eNB) network parameter can be automatically configured according to certain measurement, and carry out Automatic Optimal according to network change, thus keep network performance optimum, save substantial amounts of manpower and materials simultaneously.
For the self-optimization of switching parameter of LTE system, need the measurement that the operation conditions according to network, switching are correlated with, optimize cell reselection according to certain algorithm and switch relevant parameter, to improve the performance of network.Here switching includes the switching between the switching within LTE system and system, wherein, switching between system refers to Universal Terrestrial Radio Access Network (UTRAN, or global system for mobile communications (GSM UniversalTerrestrialRadioAccessNetwork), or the switching of CDMA (CDMA, CodeDivisionMultipleAccess) system GlobalSystemForMobileCommunication).
The process that terminal switches in a network generally comprises: network side, according to this community of terminal to report and the signal quality of adjacent area and the handover decisions made based on certain handoff algorithms, then carries out the execution of concrete switching flow further according to handover decisions notice terminal.In handoff procedure, arranging of inappropriate handoff parameter can cause pingpang handoff, handoff failure or Radio Link Failure (RLF, the coolest switching result such as RadioLinkFailure), these are all less desirable switchings, and the experience to user causes negative effect and wastes Internet resources.Therefore, for self-optimization of switching parameter, the accurately judgement to handoff failure or less desirable handoff scenario is by the basis that handoff parameter adjusts.
Subscriber equipment (UE, during UserEquipment) very poor in wireless link signals or handoff failure, it may occur that Radio Link Failure (RLF, radiolinkfailure), and carry out re-establishing of wireless heterogeneous networks (RRC, RadioResourceControl).UE is when carrying out RRC and re-establishing, and the program selected by community obtains Target cell.The handoff failure occurred in handoff procedure, source base station or target BS can retain the information of user, re-establish for RRC.UE is in the request message re-established of RRC, (UEID can be identified by carried terminal, UE-Identity), UE is at the Radio Network Temporary Identifier (C-RNTI of community, CellRadioNetworkTemporaryIdentifier), short MAC integrity verification value (shortMAC-I, and cell physical address (PCI, PhysicalCellIdentity) shortMediumAccessControlintegrityprotection).Wherein, C-RNTI distributes (scene of handoff failure) in cell-of-origin, or is triggering (other scene) of distribution in the community that RRC rebuilds；PCI refers to the physical address (scene of handoff failure) of cell-of-origin, or is triggering the physical address (other scene) of the community that RRC re-establishes；The calculating of short MAC integrity verification value is to use cell-of-origin (scene of handoff failure) or at the K triggering the community that RRC rebuildsRRCintKey and protection algorithm integrallty, wherein, KRRCintKey is the key that RRC integral algorithm needs, input is the Cell Global Identity (ECGI of PCI, C-RNTI and evolution, EvolvedCellGlobalIdentifier), wherein, PCI, C-RNTI are that above-mentioned reconstruction in message at RRC is carried, and ECGI is the ECGI of the Target cell that UE selects when RRC rebuilds.
Fig. 1 is the schematic diagram of a kind of switching scene too late, as it is shown in figure 1, the community b (Cellb) that UE is under eNBB there occurs RLF, or from cellb to failure in the handoff procedure of community a (cella)；Then, UE attempts carrying out RRC reconstruction again in the Cella under eNBA.Illustrate shown in Fig. 1 that this UE is from community Cellb to the switching of community Cella too late.
Fig. 2 is a kind of schematic diagram switching too early scene, as in figure 2 it is shown, shortly there occurs Radio Link Failure after the community Cellb being switched in the Cella that UE is from eNBA under eNBB in Cellb, or failure in the handoff procedure from cella to cellb；Then, UE have selected community Cella and carries out RRC reconstruction, is namely returned in the community before switching carry out RRC reconstruction.Illustrate shown in Fig. 2 that this UE switching from Cella to Cellb is too early.
Fig. 3 is the schematic diagram of a kind of scene switching and selecting wrong cell, as it is shown on figure 3, the community c (Cellc) that UE is from eNBC shortly there occurs RLF, or failure in the handoff procedure from cellc to cellb after being switched to the Cellb under eNBB；Then, UE community Cella under eNBA carries out RRC reconstruction.Illustrating shown in Fig. 3 that the Cellb under the eNBB selected is the Target cell of mistake, correct Target cell is Cella, and namely UE should directly carry out the switching from Cellc to Cella.
In prior art, the judgement mode of handoff scenario is had following manner:
A kind of handoff scenario is: UE there occurs RLF in the cell2 under eNB2, then have selected and carries out RRC in the cell1 under eNB1 and re-establish successfully.Judgement mode generally comprises:
UE transmission RRC re-establishes and asks message to eNB1, then eNB1 transmission RLF instruction (RLFindication) information is to eNB2, includes the PCI of cell2, UE C-RNTI in cell2, the ECGI of cell1 in RLFindication information；Optionally, the report information (UERLFReportContainer) that the Radio Link Failure of shortMAC-I with UE measurement is relevant can also be carried further, wherein, UERLFReportContainer refers to Serving cell and the signal quality of peripheral cell that UE preserves and the UE that reports measured before or after RLF；
After eNB2 receives RLFindication information, according to context (context) information of UE therein, i.e. use PCI and C-RNTI to mate UE, and available shortMAC-I verifies.If there is the intervalometer that UE opens after cell1 is switched to cell2, then judge that this UE switching from cell1 to cell2 is too early；If there is the intervalometer that UE opens after cell3 is switched to cell2, then judge that this UE switching from cell3 to cell2 is to have selected wrong cell.And send handover report (handoverreport) message to corresponding eNB.Otherwise, it is judged that UE switching from cell2 to cell1 is too late.
In above process, target eNB that RLFindication information sends is that the PCI that eNB1 re-establishes in request message according to the RRC of the UE received maps, its premise is built vertical X2 interface between eNB1 and eNB2, so, eNB1 could can map out Global base station mark (GlobaleNBID) of eNB2 according to the PCI information of cell2, such that it is able to send RLFindication information to eNB2.If being not set up X2 interface between eNB1 and eNB2, and cell2 is not configured to adjacent area by cell1, then, eNB1 is global identity and the TAI information that can not map out eNB2 according to the PCI information of cell2, the most just cannot be addressed to target eNB.
Also has a kind of handoff scenario as shown in Figure 4: UE occurs RLF in the cell2 under eNB2 and carries out RRC in the cell1 under eNB1 and re-establish failure, UE proceeds to free time (Idle) state, in the cell3 under cell reselection to eNB3 and carry out RRC and be successfully established.For the handoff scenario shown in Fig. 4, one of which judgement mode is as it is shown in figure 5, judgement mode generally comprises:
ENB1 receives after the RRC of UE re-establishes request (RRCreestablish) message, and sending RLFindication information to eNB2, eNB2 is that switching too early or switches too late or have selected wrong cell according to RLFindication judgement；ENB3, after the RRC receiving UE has set up (RRCestablish) message, indicates according to RLF metrical information therein, initiates RLF metrical information to UE and obtains request, and UE reports RLF metrical information；ENB3 is again by RLFindication information, the identification information of the RLF metrical information obtained and UE is issued eNB1, the Part II of the RLFindication information that the RLFindication information from eNB3 is again sent to eNB2 by eNB1 as self is sent to eNB2, eNB2 decide whether it is covering problem according to RLF metrical information therein.
As shown in Figure 6, judgement mode generally comprises another kind of judgement mode:
The identification information of the RLF metrical information obtained and UE is directly issued eNB2 by eNB3, wherein contain UE and be switched to, from the last time, the time difference that RRC re-establishes between trial for the first time, eNB2 judgement is switching problem or covering problem, if switching problem, then being switched to, from the last time, the time difference that RRC re-establishes between trial for the first time according to UE and adjudicate concrete handoff scenario, such as switching, too late or switching too early or has been switched to wrong cell.
In two kinds of judgement modes of above-mentioned Fig. 5 and Fig. 4, when eNB3 sends RLFindication information, all there is the problem how to address, if eNB3 Yu eNB1 or eNB2 does not has X2 interface, and cell3 Yu cell1 or cell2 is not adjacent area, so, eNB3 can not be addressed to eNB1 or eNB2 according only to PCI or ECGI, thus accurately cannot send RLFindication information to target BS.
The handoff procedure provided from the prior art is visible, owing to there is the addressing information that the target network element (such as above-mentioned target BS) that send RLFindication information be cannot be uniquely determined, so, cannot ensure that target network element is according to RLFindication relevant information, ruling out is the realization of which kind of handoff scenario, cannot guarantee that the realization that concrete handoff parameter is optimized by network on this basis, hamper the smooth realization of the self-optimization function of network, thus reduce network performance.
Summary of the invention
In view of this, present invention is primarily targeted at and the method and system determining target network element in a kind of handoff procedure are provided, can uniquely determine the addressing information of the target network element sending RLFindication information, ensure the target network element realization to the judgement of handoff scenario, and ensure the smooth realization of the self-optimization function of realization that concrete handoff parameter is optimized by network and network, thus improve network performance.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of method determining target network element in handoff procedure, after cell reselection, including: user equipment (UE) and gravity treatment network element are set up in connection procedure, carry the addressing information of target network element；
Gravity treatment network element, according to setting up the addressing information of the target network element carried in connection procedure, sends Radio Link Failure RLF to target network element and indicates information.
Also include before the method:
Described UE carries out radio resource control RRC and re-establishes, and during RRC re-establishes, carries the addressing information of target network element；
The network element that requested RRC re-establishes, according to the addressing information of the target network element carried, sends RLF to target network element and indicates information.
Described target network element is the network element that UE occurs RLF；Described to target network element send RLF instruction information include:
Described gravity treatment network element occurs the network element of RLF to send RLF instruction information via core net to described UE.
If described UE re-establishes failure, after cell reselection, the method also includes: described UE and gravity treatment network element are set up in connection procedure, carry the addressing information of target network element；Gravity treatment network element, according to setting up the addressing information of the target network element carried in connection procedure, sends RLF to target network element and indicates information；
Described target network element is the network element that UE occurs that the network element of RLF or requested RRC re-establish.
Setting up in connection procedure described with gravity treatment network element, the addressing information of described target network element carries in UE info response message, or RRC sets up request message, or RRC sets up in completion message.
The addressing information of described target network element carries to re-establish at RRC asks message or RRC to re-establish in completion message or UE info response message.
The method also includes:
The network element that described requested RRC re-establishes carries an instruction in RRC re-establishes message or RRC reconfiguration message or other downstream message, for indicating UE the need of the addressing information reporting target network element；
When described instruction display needs the addressing information reporting target network element, described UE re-establishes completion message by RRC or RRC reconfigures completion message and carries the addressing information of target network element.
Described RRC re-establishes process when being successfully completed, and the method also includes:
Described UE sets up at the RRC being sent to the network element that described requested RRC re-establishes and carries UE in completion message and preserve the instruction of RLF correlation measurement information；
The network element that described requested RRC re-establishes sends UE information request message to UE, it is desirable to described UE reports RLF correlation measurement information；
The addressing information of RLF correlation measurement information and target network element is reported to, by UE info response message, the network element that described requested RRC re-establishes by described UE.
The network element that described requested RRC re-establishes carries an instruction the most further in UE information request message, for indicating UE to report the addressing information of target network element.
Setting up in connection procedure described with gravity treatment network element, the addressing information of described target network element carries in RRC foundation request message or RRC sets up completion message or UE info response message or RRC reconfigures in completion message or other upstream message.
The method also includes: described gravity treatment network element carries an instruction in RRC sets up message or UE information request message or RRC reconfiguration message or other downstream message, for indicating UE the need of the addressing information reporting target network element.
Described target network element is the network element that requested RRC re-establishes；Described to target network element send RLF instruction information include:
Described gravity treatment network element sends RLF via core net to the network element that described requested RRC re-establishes and indicates information；The RLF received instruction information is indicated the Part II of information to be sent to target network element as the RLF self being sent to target network element by the network element that described requested RRC re-establishes.
Network element or gravity treatment network element that described target network element or requested RRC re-establish be: base station/Home eNodeB or radio network controller (RNC) or base station controller BSC.
The addressing information of described target network element is to send RLF instruction information to the addressing information required for target network element, particularly as follows:
When described target network element is Long Term Evolution LTE base station, described addressing information comprises Global base station mark and tracing area identifies TAI information, or, described Global base station mark and the information of TAI content can be comprised；
As RNC during described target network element is UMTS UMTS, it is one or more that described addressing information comprises in Location Area Identification LAI, Routing Area code RAC, base station controller mark, extended base station controller identifier；
When base station controller during described target network element is global mobile communication gsm system, described addressing information is cellular global identity CGI.
A kind of handoff procedure determines the system of target network element, at least includes UE, target network element and gravity treatment network element, wherein,
Described UE, for setting up in connection procedure with gravity treatment network element, passes to gravity treatment network element by the addressing information of target network element；
Gravity treatment network element, for setting up in connection procedure with UE, obtains the addressing information of target network element, after RRC is successfully established, sends RLF to target network element and indicates information；
Target network element, is used for receiving RLF and indicates information.
Described system also includes the network element that requested RRC re-establishes, wherein,
UE, the network element being additionally operable to re-establish with requested RRC carries out RRC and re-establishes process, carries the addressing information of target network element during RRC re-establishes；
The network element that requested RRC re-establishes, re-establishes process for carrying out RRC with UE, re-establishes the addressing information of Procedure Acquisition target network element at RRC, after RRC re-establishes successfully, sends RLFindication information to target network element；
Target network element, is additionally operable to receive the RLFindication information of the network element re-established from requested RRC, and completes the judgement of handoff scenario.
When described UE re-establishes unsuccessfully,
Described UE, is additionally operable to setting up in connection procedure with described gravity treatment network element, the addressing information of target network element is passed to gravity treatment network element；
Gravity treatment network element, it is additionally operable to after RRC is successfully established, the network element re-established to described requested RRC sends RLF instruction information, and this RLF instruction information is indicated the Part II of information to be sent to target network element as the RLF being sent to target network element by network element that described requested RRC re-establishes again.
In LTE system, network element or gravity treatment network element that described target network element or request RRC re-establish are base station/Home eNodeB；
In the umts system, described target network element or request RRC re-establish network element or gravity treatment network element are RNC；
In gsm system, network element or gravity treatment network element that described target network element or request RRC re-establish are BSC.
After the technical scheme of the invention described above offer is it can be seen that be included in cell reselection, subscriber equipment (UE) and gravity treatment network element are set up in connection procedure, carry the addressing information of target network element；Gravity treatment network element, according to setting up the addressing information of the target network element carried in connection procedure, sends Radio Link Failure RLF to target network element and indicates information..Pass through the inventive method, accurately have sent Radio Link Failure instruction information to target network element, ensure that the target network element realization to the judgement of handoff scenario, and ensure that the smooth realization of the self-optimization function of realization that concrete handoff parameter is optimized by network and network, thus improve network performance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of switching scene too late；
Fig. 2 is a kind of schematic diagram switching too early scene；
Fig. 3 is the schematic diagram of a kind of scene switching and selecting wrong cell；
Fig. 4 is the schematic diagram of a kind of handoff scenario；
Fig. 5 is a kind of schematic diagram adjudicating mode of the handoff scenario shown in Fig. 4；
Fig. 6 is the schematic diagram of the another kind of judgement mode of the handoff scenario shown in Fig. 4；
Fig. 7 is the flow chart of the method determining target network element in handoff procedure of the present invention；
Fig. 8 is the composition structural representation of the system determining target network element in handoff procedure of the present invention.
Detailed description of the invention
Fig. 7 is the flow chart of the method determining target network element in handoff procedure of the present invention, as it is shown in fig. 7, comprises:
Step 700: after cell reselection, UE and gravity treatment network element are set up in connection procedure, carry the addressing information of target network element.Target network element is the network element that UE occurs RLF.
Step 701: gravity treatment network element, according to setting up the addressing information of the target network element carried in connection procedure, sends Radio Link Failure RLF to target network element and indicates information.
Also include before the inventive method: UE carries out RRC and re-establishes, and during RRC re-establishes, carry the addressing information of target network element, such as re-establish request message or RRC re-establishes and carries the addressing information of target network element in completion message etc. at RRC；The network element that requested RRC re-establishes, addressing information according to the target network element carried, RLFindication information is sent to target network element, the network element that the most requested RRC re-establishes receives the RRC of UE and re-establishes request message or RRC re-establishes completion message etc., can obtain the addressing information of target network element.
Further, if UE re-establishes failure, after cell reselection, set up in connection procedure with gravity treatment network element, UE can pass through UE information response (UEInformationResponse) message, or RRC sets up request message, or RRC sets up completion message and carries the addressing information of target network element；Receive UEInformationResponse message or RRC sets up the gravity treatment network element asking message or RRC to set up completion message, according to the addressing information of the target network element wherein carried, send RLFindication information to target network element.Now, target network element is the network element that UE occurs that the network element of RLF or requested RRC re-establish.
Further, if UE does not carry out cell reselection, described gravity treatment network element is community resident after Radio Link Failure for UE.
Wherein, (target) network element is: base station (including Home eNodeB) or radio network controller (RNC, RadioNetworkController) or base station controller (BSC, BaseStationController).
The addressing information of target network element is: the addressing information required for transmission RLFindication information to target network element:
When target network element is LTE base station, addressing information comprises Global base station mark (GlobaleNBID) and tracing area identifies (TAI) information, or can comprise the information of described GlobaleNBID and TAI content, such as ECGI and TAI information；
As radio network controller (RNC) during target network element is UMTS (UMTS), it is one or more that addressing information comprises in Location Area Identification (LAI), Routing Area code (RAC), base station controller mark (RNC-ID), extended base station controller identifier (ExtendedRNC-ID)；
When base station controller during target network element is gsm system, addressing information is cellular global identity (CGI, cellglobalidentity), wherein, CGI is by public land mobile communication network (PLMN, PublicLandMobile-communicationNetwork) identity, Location Area Code (LAC), cell ID (CI, cellidentity), Routing Area code (RAC) composition, wherein RAC is option.
Pass through the inventive method, accurately have sent RLFindication information to target network element, ensure that the target network element realization to the judgement of handoff scenario, and ensure that the smooth realization of the self-optimization function of realization that concrete handoff parameter is optimized by network and network, thus improve network performance.
For the inventive method, also provide for a kind of handoff procedure determines the system of target network element, as shown in Figure 8, at least include UE, target network element and gravity treatment network element, wherein,
UE, for setting up in connection procedure with gravity treatment network element, passes to gravity treatment network element by the addressing information of target network element；
Gravity treatment network element, for setting up in connection procedure with UE, obtains the addressing information of target network element, after RRC is successfully established, sends RLF to target network element and indicates information；
Target network element, is used for receiving RLF and indicates information.
Present system also includes the network element that requested RRC re-establishes, wherein,
UE, the network element being additionally operable to re-establish with requested RRC carries out RRC and re-establishes process, carries the addressing information of target network element during RRC re-establishes；
The network element that requested RRC re-establishes, re-establishes process for carrying out RRC with UE, re-establishes the addressing information of Procedure Acquisition target network element at RRC, after RRC re-establishes successfully, sends RLFindication information to target network element；
Target network element, is additionally operable to receive the RLFindication information of the network element re-established from requested RRC, and completes the judgement of handoff scenario.
When UE re-establishes unsuccessfully, further, UE, it is additionally operable to setting up in connection procedure with described gravity treatment network element, the addressing information of target network element is passed to gravity treatment network element；
Gravity treatment network element, it is additionally operable to after RRC is successfully established, the network element re-established to described requested RRC sends RLF instruction information, and this RLF instruction information is indicated the Part II of information to be sent to target network element as the RLF being sent to target network element by network element that described requested RRC re-establishes again.
Wherein, network element (including target network element, the network element asking RRC to re-establish, gravity treatment network element) is base station (eNodeB) (including Home eNodeB) in LTE system；It is RNC in the umts system；Gsm system is BSC.
Below in conjunction with embodiment, the inventive method is described in detail.In following example, the network element 1 eNB1 belonging to cell1, the network element 2 eNB2 belonging to cell2, the network element 3 eNB3 belonging to cell3.
First embodiment, in conjunction with the handoff scenario shown in Fig. 4, it is assumed that UE RRC in LTE system re-establishes successfully, transmits the addressing information of target network element in the present embodiment by carrying the addressing information of network element 2 in re-establishing request message at RRC.Being implemented as follows of first embodiment:
Assume that UE is in connected state in the Cell2 that network element 2 is administrative, owing to wireless link signals is very poor, handoff failure or other reason cause there occurs Radio Link Failure (RLF, radiolinkfailure), UE have selected the administrative cell1 of network element 1 to carry out RRC and re-establishes, UE sends to network element 1 and carries the Datagram RRC of network element 2 and re-establish request message, and carries out RRC in cell1 and be successfully established；
Network element 1 re-establishes the addressing information of the network element 2 carried in request message according to RRC, send RLFindication information to network element 2, implement and include: network element 1 sends RLFindication information to core net (CN, CoreNetwork), RLFindication information is sent to network element 2 according to the addressing information of network element 2 by CN；
Network element 2 adjudicates concrete handoff scenario according to RLFindication information and relevant UEcontext intervalometer, and such as, switching is too late or switching too early or has been switched to wrong cell；Network side switches over the optimization of parameter according to the concrete scene of switching.(belonging to prior art about how to make decisions and optimize, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
Can be seen that from the realization of first embodiment, even if there is no X2 interface between network element 1 and network element 2, the RRC received due to network element 1 re-establishes the addressing information asking to carry network element 2 in message, therefore, also ensure that RLFindication information is accurately sent to network element 2 by network element 1.
Second embodiment, in conjunction with the handoff scenario shown in Fig. 4, it is assumed that UE RRC in LTE system re-establishes successfully, transmits the addressing information of target network element in the present embodiment by carrying the addressing information of network element 2 in re-establishing completion message at RRC.Being implemented as follows of second embodiment:
Assume that UE is in connected state in the Cell2 that network element 2 is administrative, owing to wireless link signals is very poor, handoff failure or other reason cause there occurs RLF (RLFoccur), UE have selected the administrative cell1 of network element 1 to carry out RRC and re-establishes, UE sends RRC to network element 1 and re-establishes request message, carrying out after RRC re-establishes successfully in cell1, UE re-establishes the addressing information carrying network element 2 in completion message at the RRC being sent to network element 1.Further, network element 1 can carry an instruction in RRC sets up message (RRCsetup) or RRC reconfiguration message (RRCConnectionReconfiguration) or other downstream message, for indicating UE the need of the addressing information reporting network element 2, if desired, then UE can re-establish completion message by RRC or RRC has reconfigured the addressing information of (RRCConnectionReconfigurationcomplete) information reporting network element 2；
Network element 1 re-establishes the addressing information of the network element 2 carried in completion message according to RRC, send RLFindication information to network element 2, implement and include: network element 1 sends RLFindication information and according to the addressing information of network element 2, RLFindication information is sent to network element 2 to CN, CN；
Network element 2 adjudicates concrete handoff scenario according to RLFindication information and relevant UEcontext intervalometer, and such as, switching is too late or switching too early or has been switched to wrong cell；Network side switches over the optimization of parameter according to the concrete scene of switching.(belonging to prior art about how to make decisions and optimize, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
3rd embodiment, in conjunction with the handoff scenario shown in Fig. 4, it is assumed that UE RRC in LTE system re-establishes successfully, transmits the addressing information of target network element in the present embodiment by carrying the addressing information of network element 2 in UEInformationResponse message.Being implemented as follows of 3rd embodiment:
Assume that UE is in connected state in the Cell2 that network element 2 is administrative, owing to wireless link signals is very poor, handoff failure or other reason cause there occurs RLF, UE have selected the administrative cell1 of network element 1 to carry out RRC and re-establishes, UE sends RRC to network element 1 and re-establishes request message, cell1 is carried out after RRC re-establishes successfully, UE sends RRC to network element 1 and re-establishes completion message, sets up in completion message at the RRC of UE, carries UE and preserves the instruction of RLF correlation measurement information；Network element 1 sends UE information request (UEInformationRequest) to UE, requiring that UE reports RLF correlation measurement information, the addressing information of RLF correlation measurement information and network element 2 is reported to network element 1 by UE information response (UEInformationResponse) by UE.Further, network element 1 can also carry an instruction in UEInformationRequest message and require that UE reports the Datagram instruction of network element 2；
Network element 1 is according to the addressing information of the network element 2 carried in UEInformationResponse, send RLFindication information to network element 2, implement and include: network element 1 sends RLFindication information and according to the addressing information of network element 2, RLFindication information is sent to network element 2 to CN, CN；
Network element 2 adjudicates concrete handoff scenario according to RLFindication information and relevant UEcontext intervalometer, and such as, switching is too late or switching too early or has been switched to wrong cell；Network side switches over the optimization of parameter according to the concrete scene of switching.(belonging to prior art about how to make decisions and optimize, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.
4th embodiment, in conjunction with the handoff scenario shown in Fig. 5, assume that RRC re-establishes failure, UE RRC in LTE system is successfully established, by setting up request message or RRC sets up and carries the addressing information of network element 1 in completion message or UEInformationResponse message and transmit the addressing information of target network element at RRC in the present embodiment.Being implemented as follows of 4th embodiment:
Assume that UE is in connected state in the Cell2 that network element 2 is administrative, owing to wireless link signals is very poor, handoff failure or other reason cause there occurs RLF, UE have selected cell1 to carry out RRC and re-establishes, UE sends RRC to network element 1 and re-establishes request message, owing to cell1 not having context (context) or other reason of UE, UE RRC in cell1 re-establishes failure, and UE proceeds to idle state.UE is by cell reselection in idle state, and gravity treatment is to cell3, and sends RRC foundation request message to network element 3, and RRC is successfully established entrance connected state.Wherein, UE is selecting cell1 to carry out during RRC re-establishes, and can be obtained the addressing information of network element 1 by the broadcast message reading cell1；
Receive after the RRC from UE re-establishes request message at network element 1, send Radio Link Failure instruction RLFindication information to network element 2, instruction UE there occurs RLF, RLFindication information includes and re-establishes, from the RRC from UE, C-RNTI and PCI obtained request message, and UE selects to carry out the global identity ECGI of the cell1 that RRC re-establishes trial, it is also possible to carry short MAC integrity verification value (shortMAC-I) further；
After network element 2 receives RLFindication information, match concrete UEcontext according to C-RNTI and PCI wherein carried；Further, it is also possible to utilize shortMAC-I to verify.Network element 2 can be according to the intervalometer with this UEcontext, and the last handoff procedure of this UE judges concrete handoff scenario.Such as, if the intervalometer of this UEcontext has timed out, then can determine whether be once switching from cell2 to cell1 too late；If the intervalometer of this UEcontext has not timed out, and the cell-of-origin of the last handoff procedure of UE is cell1, then judge that this is that once switching from cell1 to cell2 is too early；If the intervalometer of this UEcontext has not timed out, and the cell-of-origin of the last handoff procedure of UE is other community, then judge that the switching from this other community to cell2 has been to switch to wrong cell；(belonging to prior art about how to make decisions, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
The RRC that network element 3 receives from UE sets up completion message, wherein carries UE and preserves the instruction of RLF correlation measurement information.Network element 3 sends UEInformationRequest message to UE, require that UE reports RLF correlation measurement information, RLF correlation measurement information is reported to network element 3 by UEInformationResponse message by UE, UEInformationResponse message wherein can also be carried RRC that UE sends in cell1 further and re-establish the PCI, C-RNTI carried in request message；ShortMAC-I can also be carried further, it is also possible to carry UE further and carry out the ECGI that RRC re-establishes the cell1 of trial for the first time after RLF.Wherein it is possible to set up request message or RRC sets up completion message or UEInformationResponse message or RRC has reconfigured and carried the addressing information of network element 1 in (RRCConnectionReconfigurationComplete) message at RRC.
Further, network element 3 can carry an instruction in RRC sets up message (RRCsetup) or UEInformationRequest or RRC reconfiguration message (RRCConnectionReconfiguration) or other downstream message, for indicating UE the need of the addressing information reporting network element 1, if desired, then UE sets up completion message or UEInformationResponse message by RRC or RRC reconfigures completion message and reports the addressing information of network element 1；
Network element 3 sends RLFindication information and according to the addressing information of network element 1, RLFindication information is sent to network element 1 to CN, CN.Here RLFindication information includes RRC and re-establishes C-RNTI and PCI carried in request message, ShortMAC-I can also be carried further, UE can also be carried further and select to carry out the ECGI of the cell1 that RRC re-establishes trial, the RLF correlation measurement information that UE reports can also be carried further, it is also possible to carry further for mark be the mark of RLFindication Part II；
Network element 1 receives the RLFindication information from network element 3, and the Part II of the RLFindication information self being sent to network element 2 as network element 1 is sent to network element 2.After network element 2 receives Article 2 RLFindication information, the RLF correlation measurement information according to wherein carrying determines handoff parameter problem or covering problem.The such as signal quality of Serving cell and best peripheral cell is the most poor, then illustrate to there may be covering leak etc. here.(belonging to prior art about how to determine, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
5th embodiment, in conjunction with the handoff scenario shown in Fig. 5, assume that RRC re-establishes failure, UE RRC in LTE system is successfully established, by setting up request message or RRC sets up and carries the addressing information of network element 2 in completion message or UEInformationResponse message or other upstream message and transmit the addressing information of target network element at RRC in the present embodiment.Being implemented as follows of 5th embodiment:
Assume that UE is in connected state in the Cell2 that network element 2 is administrative, owing to wireless link signals is very poor, handoff failure or other reason cause there occurs RLF, UE have selected cell1 to carry out RRC and re-establishes, UE re-establishes request message to network element 1 to sending RRC, owing to cell1 not having the context context of UE, UE RRC in cell1 re-establishes failure, and UE proceeds to idle state.Or, UE have selected cell1 but do not initiates RRC and re-establish request directly to proceed to idle state, such as cell1 be intersystem cell.UE is by cell reselection in idle state, and gravity treatment is to cell3, and sends RRC foundation request message to network element 3, and UE carries out RRC and is successfully established entrance connected state；
The RRC that network element 3 receives from UE sets up completion message, wherein carries UE and preserves the instruction of RLF correlation measurement information.Network element 3 sends UEInformationRequest message to UE, it is desirable to UE reports RLF correlation measurement information, and RLF correlation measurement information is reported to network element 3 by UEInformationResponse message by UE.Wherein, UEInformationResponse message can also be carried RRC that UE sends in cell1 further and re-establish the PCI, C-RNTI carried in request message, ShortMAC-I, wherein, PCI be PCI, C-RNTI and the ShortMAC-I of cell2 be parameter relevant to this UE in cell2.UE can also be carried further after RLF, carry out the global identity that RRC re-establishes the community cell1 of trial selection for the first time, UE can also be carried further be switched to community cell2 and attempt initiating, at cell1, the time difference that RRC re-establishes, it is also possible to carry the global identity of community resident before cell2 for UE further.Wherein, request message can be set up or RRC sets up completion message or UEInformationResponse message or RRC reconfigures and carries the addressing information of network element 2 in completion message or other upstream message at RRC, here, the addressing information of network element 2 can be that UE is obtained by the broadcast message reading cell2.
Further, network element 3 can carry an instruction in RRC sets up message (RRCsetup) or UEInformationRequest message or RRC reconfiguration message or other downstream message, for indicating UE the need of the addressing information reporting network element 2, if desired, then UE can set up completion message or UEInformationResponse message by RRC or RRC reconfigures completion message or other upstream message reports the addressing information of network element 2；
Network element 3 sends RLFindication information and according to the addressing information of network element 2, RLFindication information is sent to network element 2 to CN, CN.Here RLFindication information includes and re-establishes, from RRC, C-RNTI and PCI obtained request message, ShortMAC-I can also be carried further, UE can also be carried further and select to carry out the global identity of the cell1 that RRC re-establishes trial, the RLF correlation measurement information that UE reports can also be carried further, UE can also be carried further be switched to cell2 and attempt re-establishing at cell1 initiation RRC the time difference of request, it is also possible to carry the global identity of community resident before cell2 for UE further；
After network element 2 receives RLFindication information, match concrete UEcontext according to C-RNTI and PCI wherein carried；Further, it is also possible to utilize shortMAC-I to verify.Network element 2 can be switched to community cell2 according to the intervalometer and UE with this UEcontext and attempt initiating RRC at cell1 and re-establish the time difference of request and judge concrete handoff scenario.Such as, if the intervalometer of this UEcontext less than this time difference, then can determine whether be once switching from cell2 to cell1 too late；If the intervalometer of this UEcontext is more than this time difference, and the cell-of-origin of the last handoff procedure of UE is cell1, then judge that this is that once switching from cell1 to cell2 is too early；If the intervalometer of this UEcontext is more than this time difference, and the cell-of-origin of the last handoff procedure of UE is other community cell4, then judge that the switching from this other community cell4 to cell2 has been to switch to wrong cell.And the global identity of community resident before cell2 for UE, namely described other community cell4 can be obtained from RLFindication information；(belonging to prior art about how to make decisions, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
Network element 2 can also determine handoff parameter problem or covering problem according to the RLF correlation measurement information in RLFindication information.The such as signal quality of Serving cell and best peripheral cell is the most poor, then illustrate to there may be covering leak etc. here.(belonging to prior art about how to determine, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
Sixth embodiment, in conjunction with the handoff scenario shown in Fig. 4, it is assumed that UE RRC in the umts system re-establishes successfully, is implemented as follows:
nullAssume that UE is in connected state in the Cell2 that network element 2 is administrative，Owing to wireless link signals is very poor、Handoff failure or other reason cause there occurs RLF，UE have selected the cell1 of UMTS system to carry out RRC and re-establishes，UE sends RRC to network element 1 and re-establishes request i.e. cell update (cellupdate) message，Network element 1 sends cell update and confirms that (cellupdateconfirm) message is to UE，UE returns and heavily joins completion message i.e. radio bearer and reconfigured (RadioBearerReconfigurationComplete) message or transmission channel has reconfigured (transportchannelreconfigurationcomplete) message or physical channel has reconfigured (physicalchannelreconfigurationcomplete) message，RRC re-establishes successfully.Wherein, UE can heavily join completion message in cellupdate message or radio bearer, transmission channel reconfigures completion message, physical channel reconfigures the addressing information carrying network element 2 in completion message；
Further, network element 1 can carry an instruction in cellupdateconfirm message or other downstream message, for indicating UE the need of the addressing information reporting network element 2, if desired, then UE reports the addressing information of network element 2；
Network element 1 sends RLFindication information according to the addressing information of network element 2 to network element 2.Implement and include: network element 1 sends RLFindication information and according to the addressing information of network element 2, RLFindication information is sent to network element 2 to CN, CN；
Network element 2 adjudicates concrete handoff scenario according to RLFindication and relevant UEcontext intervalometer, and such as, switching is too late, switching is too early, be switched to wrong cell；Network side switches over the optimization of parameter according to the concrete scene of switching.(belonging to prior art about how to make decisions and optimize, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
7th embodiment, in conjunction with the handoff scenario shown in Fig. 6, it is assumed that UE carries out after RRC re-establishes unsuccessfully, carrying out RRC in the umts system and being successfully established, and in the present embodiment, what UE reported is the addressing information of network element 1.It is implemented as follows:
Assume that UE is in connected state in the Cell2 that network element 2 is administrative, owing to wireless link signals is very poor, handoff failure or other reason cause there occurs RLF, UE have selected the cell1 of UMTS system to carry out RRC and re-establishes, owing to a variety of causes re-establishes failure or does not initiates to re-establish trial.Network element 1 sends RLFindication information to network element 2, includes the context of UE, occurs the cell information of RLF, RRC to re-establish the content such as cell information of trial in RLFindication information；Subsequently, UE proceeds to idle state, in cell reselection to the cell3 of UMTS system, initiates RRC and sets up and be successfully established.UE can set up request message or RRC has set up and carried the addressing information of network element 1 in message or UEInformationResponse message or other upstream message at cellupdate message or RRC；
Further, network element 3 can carry an instruction in RRC sets up message (RRCsetup) or UEInformationRequest or other downstream message, for indicating UE the need of the addressing information reporting network element 1, if desired, then UE reports the addressing information of network element 1；
Network element 3, according to the addressing information of network element 1, sends RLFindication information to network element 1, specifically includes: network element 3 sends RLFindication information and according to the addressing information of network element 1, RLFindication information is sent to network element 1 to CN, CN.This partial content is sent to network element 2 as the Part II of RLFindication information by network element 1 again；
Network element 2 adjudicates concrete handoff scenario according to RLFindication and relevant UEcontext intervalometer, and such as, switching is too late, switching is too early, be switched to wrong cell.Network side switches over the optimization of parameter according to the concrete scene of switching.(belonging to prior art about how to make decisions and optimize, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
8th embodiment, in conjunction with the handoff scenario shown in Fig. 6, it is assumed that UE carries out after RRC re-establishes unsuccessfully, carrying out RRC in the umts system and being successfully established, and in the present embodiment, what UE reported is the addressing information of network element 2.It is implemented as follows:
Assume that UE is in connected state in the Cell2 that network element 2 is administrative, owing to wireless link signals is very poor, handoff failure or other reason cause there occurs RLF, UE have selected the cell1 of UMTS system to carry out RRC and re-establishes, owing to a variety of causes re-establishes failure or does not initiates to re-establish trial.UE proceeds to idle state, in cell reselection to cell3；Subsequently, initiate RRC to set up and be successfully established.UE can set up request message or RRC sets up and carries the addressing information of network element 2 in completion message or UEInformationResponse message at RRC；
Further, network element 3 can carry an instruction in RRC sets up message (RRCsetup) or UEInformationRequest or other downstream message, for indicating UE the need of the addressing information reporting network element 2, if desired, then UE reports the addressing information of network element 2；
Network element 3, according to the addressing information of network element 2, sends RLFindication information to network element 2, specifically includes: network element 3 sends RLFindication information and according to the addressing information of network element 2, RLFindication information is sent to network element 2 to CN, core net；
Network element 2 adjudicates concrete handoff scenario according to RLFindication and relevant UEcontext intervalometer, and such as, switching is too late, switching is too early, be switched to wrong cell.Network side switches over the optimization of parameter according to the concrete scene of switching.(belonging to prior art about how to make decisions and optimize, it implements and is not belonging to protection scope of the present invention, without in limiting protection scope of the present invention.)
RLF correlation measurement information in the above embodiment of the present invention is: the Serving cell before RLF occurs and the measurement result of the signal quality of the signal quality measurement result of best peripheral cell, Serving cell measured when initiating subsequently to rebuild for UE and best peripheral cell, and one or more in the positional information of UE.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (17)
1. the method determining target network element in a handoff procedure, it is characterised in that after cell reselection, including: user equipment (UE) and gravity treatment network element are set up in connection procedure, carry the addressing information of target network element；
Gravity treatment network element, according to setting up the addressing information of the target network element carried in connection procedure, sends Radio Link Failure RLF to target network element and indicates information；
Wherein, described network element is base station, RNC or BSC；
The addressing information of described target network element is to send RLF instruction information to the addressing information required for target network element, particularly as follows:
When described target network element is Long Term Evolution LTE base station, described addressing information comprises Global base station mark and tracing area identifies TAI information, or, described Global base station mark and the information of TAI content can be comprised；
As RNC during described target network element is UMTS UMTS, it is one or more that described addressing information comprises in Location Area Identification LAI, Routing Area code RAC, base station controller mark, extended base station controller identifier；
When base station controller during described target network element is global mobile communication gsm system, described addressing information is cellular global identity CGI.
Method the most according to claim 1, it is characterised in that also include before the method:
Described UE carries out radio resource control RRC and re-establishes, and during RRC re-establishes, carries the addressing information of target network element；
The network element that requested RRC re-establishes, according to the addressing information of the target network element carried, sends RLF to target network element and indicates information.
Method the most according to claim 1, it is characterised in that described target network element is the network element that UE occurs RLF；Described to target network element send RLF instruction information include:
Described gravity treatment network element occurs the network element of RLF to send RLF instruction information via core net to described UE.
Method the most according to claim 2, it is characterised in that if described UE re-establishes failure, after cell reselection, the method also includes: described UE and gravity treatment network element are set up in connection procedure, carry the addressing information of target network element；Gravity treatment network element, according to setting up the addressing information of the target network element carried in connection procedure, sends RLF to target network element and indicates information；
Described target network element is the network element that UE occurs that the network element of RLF or requested RRC re-establish.
Method the most according to claim 1, it is characterised in that setting up in connection procedure described with gravity treatment network element, the addressing information of described target network element carries in UE info response message, or RRC sets up request message, or RRC sets up in completion message.
Method the most according to claim 2, it is characterised in that the addressing information of described target network element carries to re-establish at RRC asks message or RRC to re-establish in completion message or UE info response message.
Method the most according to claim 2, it is characterised in that the method also includes:
The network element that described requested RRC re-establishes carries an instruction in RRC re-establishes message or RRC reconfiguration message or other downstream message, for indicating UE the need of the addressing information reporting target network element；
When described instruction display needs the addressing information reporting target network element, described UE re-establishes completion message by RRC or RRC reconfigures completion message and carries the addressing information of target network element.
Method the most according to claim 2, it is characterised in that described RRC re-establishes process when being successfully completed, and the method also includes:
Described UE sets up at the RRC being sent to the network element that described requested RRC re-establishes and carries UE in completion message and preserve the instruction of RLF correlation measurement information；
The network element that described requested RRC re-establishes sends UE information request message to UE, it is desirable to described UE reports RLF correlation measurement information；
The addressing information of RLF correlation measurement information and target network element is reported to, by UE info response message, the network element that described requested RRC re-establishes by described UE.
Method the most according to claim 8, it is characterised in that the network element that described requested RRC re-establishes carries an instruction the most further in UE information request message, for indicating UE to report the addressing information of target network element.
Method the most according to claim 4, it is characterized in that, setting up in connection procedure described with gravity treatment network element, the addressing information of described target network element carries in RRC foundation request message or RRC sets up completion message or UE info response message or RRC reconfigures in completion message or other upstream message.
11. methods according to claim 10, it is characterized in that, the method also includes: described gravity treatment network element carries an instruction in RRC sets up message or UE information request message or RRC reconfiguration message or other downstream message, for indicating UE the need of the addressing information reporting target network element.
12. methods according to claim 11, it is characterised in that described target network element is the network element that requested RRC re-establishes；Described to target network element send RLF instruction information include:
Described gravity treatment network element sends RLF via core net to the network element that described requested RRC re-establishes and indicates information；The RLF received instruction information is indicated the Part II of information to be sent to target network element as the RLF self being sent to target network element by the network element that described requested RRC re-establishes.
13. methods according to claim 1 and 2, it is characterised in that network element or gravity treatment network element that described target network element or requested RRC re-establish be: base station/Home eNodeB or radio network controller (RNC) or base station controller BSC.
14. 1 kinds of handoff procedures determine the system of target network element, it is characterised in that at least include UE, target network element and gravity treatment network element, wherein,
Described UE, for setting up in connection procedure with gravity treatment network element, passes to gravity treatment network element by the addressing information of target network element；
Gravity treatment network element, for setting up in connection procedure with UE, obtains the addressing information of target network element, after RRC is successfully established, sends RLF to target network element and indicates information；
Target network element, is used for receiving RLF and indicates information；
Wherein, described network element is base station, RNC or BSC；
The addressing information of described target network element is to send RLF instruction information to the addressing information required for target network element, particularly as follows:
When described target network element is Long Term Evolution LTE base station, described addressing information comprises Global base station mark and tracing area identifies TAI information, or, described Global base station mark and the information of TAI content can be comprised；
As RNC during described target network element is UMTS UMTS, it is one or more that described addressing information comprises in Location Area Identification LAI, Routing Area code RAC, base station controller mark, extended base station controller identifier；
When base station controller during described target network element is global mobile communication gsm system, described addressing information is cellular global identity CGI.
15. systems according to claim 14, it is characterised in that described system also includes the network element that requested RRC re-establishes, wherein,
UE, the network element being additionally operable to re-establish with requested RRC carries out RRC and re-establishes process, carries the addressing information of target network element during RRC re-establishes；
The network element that requested RRC re-establishes, re-establishes process for carrying out RRC with UE, re-establishes the addressing information of Procedure Acquisition target network element at RRC, after RRC re-establishes successfully, sends RLFindication information to target network element；
Target network element, is additionally operable to receive the RLFindication information of the network element re-established from requested RRC, and completes the judgement of handoff scenario.
16. systems according to claim 15, it is characterised in that when described UE re-establishes unsuccessfully,
Described UE, is additionally operable to setting up in connection procedure with described gravity treatment network element, the addressing information of target network element is passed to gravity treatment network element；
Gravity treatment network element, it is additionally operable to after RRC is successfully established, the network element re-established to described requested RRC sends RLF instruction information, and this RLF instruction information is indicated the Part II of information to be sent to target network element as the RLF being sent to target network element by network element that described requested RRC re-establishes again.
17. according to the system described in any one of claim 14～16, it is characterised in that in LTE system, and network element or gravity treatment network element that described target network element or request RRC re-establish are base station/Home eNodeB；
In the umts system, described target network element or request RRC re-establish network element or gravity treatment network element are RNC；
In gsm system, network element or gravity treatment network element that described target network element or request RRC re-establish are BSC.
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| PCT/CN2011/076505 WO2012013107A1 (en) | 2010-07-28 | 2011-06-28 | Method and system for determining target network element in handover scene judging process |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103581961B (en) * | 2012-07-27 | 2017-09-01 | 电信科学技术研究院 | Radio Link Failure is reported and processing method and equipment |
| CN103686884A (en) * | 2012-09-25 | 2014-03-26 | 中国移动通信集团公司 | Method, system and base station, and webmaster for transmitting RLF information |
| CN103841608A (en) * | 2012-11-21 | 2014-06-04 | 中兴通讯股份有限公司 | Method, device and system for radio resource control connection reestablishment |
| CN114449603B (en) * | 2012-12-24 | 2024-06-07 | 北京三星通信技术研究有限公司 | Base station in wireless communication system and method performed by the same |
| CN110049577B (en) * | 2018-01-15 | 2021-02-02 | 大唐移动通信设备有限公司 | Method and device for reestablishing Radio Resource Control (RRC) |
| CN110149630A (en) * | 2018-02-11 | 2019-08-20 | 华为技术有限公司 | A kind of negotiation of security algorithm, sending method and device |
| CN112243273A (en) * | 2019-07-16 | 2021-01-19 | 夏普株式会社 | Information reporting method and corresponding user equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400088A (en) * | 2007-09-30 | 2009-04-01 | 华为技术有限公司 | Switching method and device for evolution network |
| WO2009084998A1 (en) * | 2008-01-03 | 2009-07-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Fast radio link recovery after handover failure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1980463B (en) * | 2005-11-29 | 2010-04-21 | 华为技术有限公司 | Mobile terminal text management method |
| KR101183006B1 (en) * | 2007-03-21 | 2012-09-18 | 노키아 코포레이션 | Method, apparatus and computer program product for handover failure recovery |
| CN102638858B (en) * | 2007-08-22 | 2015-11-25 | 华为技术有限公司 | A kind of evolvement network switching handling method and system |
-
2010
- 2010-07-28 CN CN201010242061.0A patent/CN102348217B/en active Active
-
2011
- 2011-06-28 WO PCT/CN2011/076505 patent/WO2012013107A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400088A (en) * | 2007-09-30 | 2009-04-01 | 华为技术有限公司 | Switching method and device for evolution network |
| WO2009084998A1 (en) * | 2008-01-03 | 2009-07-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Fast radio link recovery after handover failure |
Non-Patent Citations (1)
| Title |
|---|
| MRO Signalling Requirements;3GPP,Huawei;《3GPP TSG-RAN WG3#64 R3-091107》;20090508;第1-3节 * |
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