CN104159261B - Cell update method and system in a kind of repositioning process - Google Patents
Cell update method and system in a kind of repositioning process Download PDFInfo
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- CN104159261B CN104159261B CN201410384488.2A CN201410384488A CN104159261B CN 104159261 B CN104159261 B CN 104159261B CN 201410384488 A CN201410384488 A CN 201410384488A CN 104159261 B CN104159261 B CN 104159261B
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Abstract
The invention provides the cell update method in a kind of repositioning process and system, wherein, the cell update method includes：Target RNC receive UE send cell update message, judge the U RNTI in cell update message SRNC identify whether it is identical with the mark of Target RNC；If it is different, the corresponding relation between new U RNTI in U RNTI and Target RNC in cell update message, inquires new U RNTI corresponding with the U RNTI in cell update message, and send the U RNTI to UE in cell update message；Wherein, new U RNTI are the U RNTI of Target RNC distribution；After U RNTI of the Target RNC in UE in cell update message carries out radio bearer replacement, the radio bearer for receiving UE transmissions resets completion message, completes cell update.Present invention improves user's perception, the KPI Key Performance Indicator of reorientation is improved.
Description
Technical field
The present invention relates to communication technical field, more particularly to the cell update method in a kind of repositioning process and is
System.
Background technology
Reorientation is a kind of handoff procedure of RNC (Radio Network Controller, radio network controller), existing
There is the process relocated in communication network to may be summarized to be following four step：
Step 1：PS (Packet Switch, packet switch) or CS (Circuit Switch, circuit switching), which is established, to be used
The carrying (PS or CS RAB SETUP) of family plane, UE (User Equipment, user equipment) upload measurement report
(Measure_Report) to source RNC, measurement result selections of the source RNC in measurement report is switched to the cell of Target RNC.
Source RNC sends reorientation and requires that (Relocation Required) message (specifically may be used to CN (Core Network, core net)
Think MSC (Mobile Switching Center, mobile switching centre) or SGSN (the Serving GPRS in CN
SUPPORT NODE, GPRS service node) receive reorientation require message), reorientation require message include source RNC distribute
Resource information, wherein U-RNTI (the Universal Mobile Telecommunications System of source RNC distribution be present
Terrestrial Radio Access Network Radio Network Temporary Identifier, General Mobile
Telecommunications System Terrestial wireless access network Radio Network Temporary Identifier), RNTI (Radio Network Temporary
Identifier, Radio Network Temporary Identifier) in UE and UTRAN (Universal Mobile Telecommunications
System Terrestrial Radio Access Network, UMTS land radio access web) between
Mark inside signal message as UE, why RNTI is Radio Network Temporary Identifier, is RAN (Residential
Access Network, resident's access network) it is different from international mobile subscriber identity in CN, client's interim identity, movement
For equipment international identity code.U-RNTI is RNTI one of which, and U-RNTI is used for distributing to RRC (Radio to be established
Resource Control, wireless heterogeneous networks) connection UE to be different from the different UE in same UTRAN.CN turns
Hair reorientation requires message for re-positioning request (Relocation Request) message to Target RNC.Above-mentioned reorientation requirement
The transmission of message and RELOCATION REQUEST message is by means of the saturating of source RNC (Source RNC) to Target RNC (Target RNC)
Bright container (Transparent Container).
Step 2：After Target RNC receives Relocation Request message, resource is distributed in Target RNC side, in target
RNC cell establishes Radio Link and IU interfaces and IUB connects port transmission bearing.Wherein, establish Radio Link include Target RNC to
Target NodeB sends wireless link request (Radio Link Setup Request) and target NodeB returns to Target RNC
Return wireless link response (Radio Link Setup Resporse) two processes.The resource of distribution includes Target RNC
The new U-RNTI of distribution.The resource information of distribution is included new U-RNTI composition radio bearers and resets (Radio by Target RNC
Bearer Reconfiguration) message be included in reset confirmation request (Relocation Request Acknowledge)
CN is issued in message.CN forwardings reset order (Relocation Command) message to source RNC.Above-mentioned replacement confirmation request disappears
The transmission of breath and replacement command messages is by means of the transparent of source Target RNC (Target RNC) to source RNC (Source RNC)
Container (Transparent Container).
Step 3：After source RNC receives Relocation Command message, the Radio Bearer that will wherein include
Reconfiguration message issues UE, and UE sends radio bearer and resets completion (Radio Bearer after receiving
Reconfiguration Complete) message is to Target RNC.
Step 4：After Target RNC receives Radio Bearer Reconfiguration Complete message, sent to CN
Reset and complete (Relocation Complete) message.CN gives source RNC transmission Iu release commands (Iu-Release after receiving
Command) message, resource corresponding with UE source of release RNC, including IU carryings release, IUB carryings release and Radio Link are released
Put, repositioning process is completed.Wherein, Radio Link release includes source RNC to source NodeB transmission Radio Link releasing requests
(Radio Link Deletion Request) and source NodeB return to Radio Link release response (Radio Link to source RNC
Deletion Resporse) two processes.
The schematic flow sheet of above-mentioned repositioning process as shown in figure 1, in step 2 and 3 in above-mentioned repositioning process,
Wireless environment is poor, interference be present or during flower arrangement configuration, and descending step-out occurs for UE very maximum probabilities, and reason may be as follows：1st, with
The source RNC descending step-out in cell-of-origin, UE has sent out measurement report, but due to descending step-out, can not receive radio bearer and reset message, lead
Cause can not switch RNC.2nd, with the descending step-out of Target cell of Target RNC.After UE receives unlimited carrying replacement message, it is impossible to mesh
Cell is marked to establish synchronously.
3GPP (3rd Generation Partnership Project, third generation partner program) TS25.224
Described in V12.0.0 version 5.3.2 chapters and sections and the V11.5.0 version 8.5.6 chapters and sections of 3GPP TS 25.331 UE detect it is descending
Processing mode after step-out：UE release physical channels resources, close up-downgoing data, and physical layer carries out searching again for cell, searched
To after cell, UE will carry out cell update (CELL UPDATE) on Target cell, and reason is " (radio link failure) radio
link failure”.If cell update success, this time down wireless link step-out is saved, and UE keeps online, otherwise
Call drop occurs for UE.
In repositioning process, in general the Target cell of RNC selections is optimal, is independently selected after the descending step-outs of UE
Cell very maximum probability be Target cell.In above-mentioned repositioning process, it is (small that CELL UPDATE occur on Target RNC for UE
Area update) process when, if the U-RNTI carried in CELL UPDATE messages be source RNC distribution, with the mark of Target RNC
Difference, then Target RNC is using DSCR (Directed Signaling Connection Re-establishment, directly letter
Order retries) strategy release UE, it is desirable to UE accesses that (only description for PS uses DSCR modes in agreement, but in the real-time industry of CS again
In the presence of business, can not also complete save UE it is online, in this case also using DSCR strategy).It is straight i.e. in cell updating course
It is connected on CCCH (Common Control Channel, CCCH) and discharges RRC connections and rebuild on Target RNC
RRC connections, this process last for several seconds, CS call drops being caused, PS speed breaks off the base, and the problems such as reorientation index error.
The content of the invention
The present invention provides cell update method and system in a kind of repositioning process, to solve cell in repositioning process
Renewal causes CS call drops, and PS speed breaks off the base, and the problem of reorientation index error etc..
In order to solve the above problems, the invention discloses the cell update method in a kind of repositioning process, including：
Target radio network controller RNC receives the cell update message that user equipment (UE) is sent；The cell update disappears
Breath includes the UMTS land radio access web Radio Network Temporary Identifier U-RNTI of source RNC distribution；
The Target RNC judges the mark of the service wireless network controller of the U-RNTI in the cell update message
Whether SRNC identity are identical with the mark of the Target RNC；
If it is different, U-RNTI of the Target RNC in the cell update message in the Target RNC with preserving
New U-RNTI between corresponding relation, inquire the new U-RNTI corresponding with the U-RNTI in the cell update message,
And send the U-RNTI to the UE in the cell update message；Wherein, the new U-RNTI is Target RNC distribution
U-RNTI；
U-RNTI of the Target RNC in the UE in the cell update message carries out radio bearer and resets it
Afterwards, receive the radio bearer that the UE is sent and reset completion message, complete cell update.
Preferably, the Target RNC sends U-RNTI in the cell update message to the UE, including：
The Target RNC tissue cell update confirmation message is simultaneously sent to the UE；Wherein, the cell update confirms to disappear
The U-RNTI in the cell update message that the UE is sent is carried in breath.
Preferably, after the Target RNC receives the radio bearer replacement completion message that the UE is sent, methods described
Also include：
The Target RNC sends UMTS land radio access web mobility message to the UE, notice
U-RNTI in the cell update message is updated to new U-RNTI by the UE.
Preferably, the Target RNC sends UMTS land radio access web mobility message to described
After UE, methods described also includes：
The Target RNC receives the UMTS land radio access web mobility that the UE is sent and confirmed
Message, discharge the corresponding relation of the U-RNTI and the new U-RNTI in the cell update message.
Preferably, before the Target RNC receives the cell update message of user equipment (UE) transmission, methods described is also wrapped
Include：
The UE receives the radio bearer that the source RNC is sent and resets message, and determines the UE and the Target RNC
Cell descending step-out occurs, or, the UE does not receive the radio bearer and resets message, determines the UE and the source
Descending step-out occurs for RNC cell.
The invention also discloses the cell update system in a kind of repositioning process, including：Source radio network controller
RNC, Target RNC and user equipment (UE), the Target RNC include：
Receiving module, the cell update message sent for receiving the UE；The cell update message includes source RNC points
The UMTS land radio access web Radio Network Temporary Identifier U-RNTI matched somebody with somebody；
Execution module is judged, for judging the service wireless network controller of U-RNTI in the cell update message
Whether identical with the mark of the Target RNC identify SRNC identity；If it is different, then according to the cell update message
In U-RNTI and the Target RNC in corresponding relation between the new U-RNTI that preserves, inquire and disappear with the cell update
New U-RNTI corresponding U-RNTI in breath, and send the U-RNTI to the UE in the cell update message；Wherein, institute
State the U-RNTI that new U-RNTI is Target RNC distribution；
Cell update module, radio bearer weight is carried out for the U-RNTI in the UE in the cell update message
After putting, receive the radio bearer that the UE is sent and reset completion message, complete cell update.
Preferably, it is described to judge execution module in the U-RNTI to the UE in sending the cell update message, group
Knit cell update confirmation message and send to the UE；Wherein, carry what the UE was sent in the cell update confirmation message
U-RNTI in cell update message.
Preferably, the Target RNC also includes：
Notification module, the radio bearer for receiving the UE transmissions in the cell update module reset completion message
Afterwards, UMTS land radio access web mobility message is sent to the UE, notifies the UE will be described small
U-RNTI in area's new information is updated to new U-RNTI.
Preferably, the notification module, it is additionally operable to sending UMTS land radio access web mobility
Message confirms to disappear to the UMTS land radio access web mobility that the UE sends after the UE, is received
Breath, discharge the corresponding relation of the U-RNTI and the new U-RNTI in the cell update message.
Preferably, the UE, for receive that the UE is sent in the Target RNC cell update message before, connect
Receive the radio bearer that the source RNC is sent and reset message, and determine that descending mistake occurs for the UE and the Target RNC cell
Step, or do not receive the radio bearer and reset message, determine that descending step-out occurs for the UE and source RNC cell.
Compared with background technology, the present invention includes advantages below：
Target RNC establishes new and old U-RNTI corresponding relation, wherein, new U-RNTI is the U-RNTI of Target RNC distribution, old
U-RNTI is the U-RNTI of source RNC distribution.
When in cell update message carry source RNC distribution U-RNTI, that is, when carrying old U-RNTI, according to old U-RNTI with
The new and old U-RNTI established corresponding relation, it is determined that new U-RNTI, using cell update in agreement and UMTS
Two processes of land radio access web mobility message keep UE online so that call drop and PS speed do not fall zero to CS, improve and use
Family perceives and the KPI (Key Performance Indicator, KPI Key Performance Indicator) of lifting reorientation.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of repositioning process；
Fig. 2 is the cell update method flow chart in a kind of repositioning process in the embodiment of the present invention；
Fig. 3 is the cell update method flow chart in another repositioning process in the embodiment of the present invention；
Fig. 4 is a kind of reorientation flow chart in the embodiment of the present invention；
Fig. 5 is the cell update system construction drawing in a kind of repositioning process in the embodiment of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
Below by enumerate several specific embodiments be discussed in detail it is small in a kind of repositioning process provided by the invention
Region updating method and system.
Embodiment one
The cell update method in a kind of repositioning process provided in an embodiment of the present invention is discussed in detail.
Reference picture 2, show the cell update method flow chart in a kind of repositioning process in the embodiment of the present invention.
Step 100, Target RNC receives the cell update message that UE is sent.
In repositioning process, after source RNC sends radio bearer replacement message to UE, if descending step-out, UE occur for UE
Send cell update message to Target RNC, Target RNC and receive the cell update message that UE is sent.
The cell update message can include the U-RNTI of source RNC distribution.
Step 102, the Target RNC judge the U-RNTI in the cell update message SRNC identity whether
It is identical with the mark of the Target RNC.
U-RNTI is carried in the cell update message, the U-RNTI is stored in container SRNS RELOCATION INFO
(Serving Radio Network Subsystem Relocation Information SRNS Serving Radio Network Subsystems are reset
Position information) in.
The SRNC (Serving Radio Network Controller, service wireless network controller) is RNC's
One of logic entity；SRNC identity are RNC mark.
Step 104, if the SRNC identity of the U-RNTI in cell update message are different from the mark of Target RNC,
Between the new U-RNTI then preserved in U-RNTI and the Target RNC of the Target RNC in the cell update message
Corresponding relation, inquire the new U-RNTI corresponding with the U-RNTI in the cell update message, and send the cell
U-RNTI to the UE in new information.
Wherein, the U-RNT in the cell update message is the U-RNTI of source RNC distribution, and the new U-RNTI is described
The U-RNTI of Target RNC distribution.
In the present embodiment, the U-RNTI in the cell update message is properly termed as old U-RNTI, and in the Target RNC
The new U-RNTI preserved is distinguished.There is corresponding relation in the old U-RNTI and new U-RNTI, the corresponding relation is by described
Target RNC pre-establishes.
Step 106, the Target RNC receives after the UE carries out radio bearer replacement according to the old U-RNTI
The radio bearer sent to the UE resets completion message, completes cell update.
After the UE receives the old U-RNTI, radio bearer replacement, then, institute are carried out according to the old U-RNTI
State UE and send radio bearer replacement completion message to the Target RNC, represent that cell update has been completed.
If the on the contrary, SRNC identity of the U-RNTI in the cell update message and the Target RNC mark
Sensible same, then U-RNTIs of the UE directly in the cell update message carries out radio bearer replacement, and the UE is sent
Radio bearer resets completion message to Target RNC, completes cell update.
In summary, in the embodiment of the present invention, Target RNC establishes new and old U-RNTI corresponding relation, wherein, new U-RNTI
For the U-RNTI of Target RNC distribution, old U-RNTI is the U-RNTI of source RNC distribution.
When in cell update message carry source RNC distribution U-RNTI, that is, when carrying old U-RNTI, according to old U-RNTI with
The new and old U-RNTI established corresponding relation, it is determined that new U-RNTI, using cell update in agreement and UMTS
Two processes of land radio access web mobility message keep UE online so that call drop and PS speed do not fall zero to CS, improve and use
Family perceives and the KPI of lifting reorientation.
Embodiment two
The cell update method in a kind of repositioning process provided in an embodiment of the present invention is discussed in detail.
Reference picture 3, show the cell update method flow chart in a kind of repositioning process in the embodiment of the present invention.
Step 200, the UE receives the radio bearer that the source RNC is sent and resets message, and determines the UE and institute
Descending step-out occurs for the cell for stating Target RNC.
Preferably, the step 200 or can be：The UE does not receive the radio bearer and resets message, it is determined that
Descending step-out occurs for the UE and source RNC cell.
After source RNC sends radio bearer replacement message, descending step-out occurs for the UE and the Target RNC cell,
Or the UE does not receive the radio bearer and resets message, it is determined that descending step-out occurs with the cell of the source RNC, then
Perform step 202.Wherein, it is that the UE receives radio bearer weight that descending step-out, which occurs, for the cell of the UE and the Target RNC
After putting message, it is impossible to synchronous with Target cell foundation.
Step 202, Target RNC receives the cell update message of UE transmissions.
Wherein, the U-RNTI of source RNC distribution is carried in the cell update message.
Step 204, the Target RNC judge the U-RNTI in the cell update message SRNC identity whether
It is identical with the mark of the Target RNC；If the SRNC identity of the U-RNTI in the cell update message and the mesh
It is identical to mark RNC mark, then performs step 206, if the SRNC identity of U-RNTI in the cell update message with
The mark of the Target RNC is different, then performs step 208.
Step 206, if the SRNC identity of U-RNTI in the cell update message and the Target RNC
Identify identical, then U-RNTI progress radio bearer replacements of the UE directly in the cell update message, the UE hairs
Send radio bearer to reset completion message to Target RNC, complete cell update, terminate this flow.
Step 208, if the SRNC identity of U-RNTI in the cell update message and the Target RNC
Mark is different, then U-RNTI of the Target RNC in the cell update message and new U- preserved in the Target RNC
Corresponding relation between RNTI, the new U-RNTI corresponding with the U-RNTI in the cell update message is inquired, and sent
U-RNTI to the UE in the cell update message.
Wherein, the U-RNT in the cell update message is the U-RNTI of source RNC distribution, and the new U-RNTI is described
The U-RNTI of Target RNC distribution.
In the present embodiment, the U-RNTI in the cell update message is properly termed as old U-RNTI, and in the Target RNC
The new U-RNTI preserved is distinguished.There is corresponding relation in the old U-RNTI and new U-RNTI, the corresponding relation is by described
Target RNC pre-establishes.
For example, there is corresponding relation in old U-RNTI A and new U-RNTI A '；Old U-RNTI B exist with new U-RNTI B '
Corresponding relation.If the U-RNTI in the cell update message is old U-RNTI B, the Target RNC according to the cell more
Corresponding relation between the new U-RNTI preserved in old U-RNTI B and the Target RNC in new information, inquire with it is described
New U-RNTI B ' corresponding old U-RNTI B in cell update message, and the old U-RNTI B are sent to the UE.
In above-mentioned steps 208, the Target RNC sends the old U-RNTI to the UE, Ke Yiwei：The Target RNC
Organize cell update confirmation message and send to the UE.But in actual applications, those skilled in the art can also be according to reality
Border needs, described not old to other transmissions using other forms that cell update confirmation message is sent to UE, the embodiment of the present invention
U-RNTI to the UE mode are limited.
Wherein, the U- in the cell update message that the UE is sent can be carried in the cell update confirmation message
RNTI。
Step 210, the Target RNC receives after the UE carries out radio bearer replacement according to the old U-RNTI
The radio bearer sent to the UE resets completion message, completes cell update.
The UE is after the cell update confirmation message is received, according to the requirement in the cell update confirmation message
Radio bearer replacement is carried out, then the UE sends radio bearer and resets completion message to the Target RNC.
After the Target RNC receives the radio bearer replacement completion message, send and reset completion message to CN, it is complete
Into reorientation flow.
Step 212, the Target RNC sends UMTS land radio access web mobility message to described
UE, notify the UE that the U-RNTI in the cell update message is updated into new U-RNTI.
After U-RNTI in the cell update message is updated to new U-RNTI by the UE, universal mobile communications are sent
System Terrestial RAN Mobility confirms message to the Target RNC.
Step 214, the Target RNC is receiving the UMTS land radio access web of the UE transmissions
After mobility confirmation message, the corresponding relation of the U-RNTI and the new U-RNTI in the cell update message are discharged.
In summary, in the embodiment of the present invention, Target RNC establishes new and old U-RNTI corresponding relation, wherein, new U-RNTI
For the U-RNTI of Target RNC distribution, old U-RNTI is the U-RNTI of source RNC distribution.
When in cell update message carry source RNC distribution U-RNTI, that is, when carrying old U-RNTI, according to old U-RNTI with
The new and old U-RNTI established corresponding relation, it is determined that new U-RNTI, using cell update in agreement and UMTS
Two processes of land radio access web mobility message keep UE online, and call drop and PS speed do not fall zero to CS, improve user's sense
Know and lifted the KPI of reorientation.
Embodiment three
The cell update method in a kind of repositioning process provided in an embodiment of the present invention is discussed in detail.
The present embodiment is after target side RNC receives source RNC Relocation Request message, container therefrom
The U-RNTI of source RNC distribution is obtained in SRNS RELOCATION INFO, after Target RNC distributes new U-RNTI, is established new and old
U-RNTI corresponding relation.When being successfully received the CELL UPDATE messages for carrying old U-RNTI, it can be inquired about using old U-RNTI
Corresponding new U-RNTI, old U-RNTI is assembled in CELL UPDATE CONFIRM message and issues UE, CELL UPDATE
Old U-RNTI can be carried in CONFIRM message (if DCCH (Dedicated Control Channel, special control letter
Road) on send CELL UPDATE CONFIRM message when, it is necessary in MAC PDU (Protocol Data Unit Protocol
Data Unit, media access control layer protocol Data Unit) in head instruction UE be identified as old U-RNTI).UE performs CELL
Configuration in UPDATE CONFIRM, Radio Bearer Reconfiguration Complete are sent on new link
Message is to Target RNC.After Target RNC receives Radio Bearer Reconfiguration Complete message, cell is represented
It is updated successfully, then this down wireless link step-out is saved, and UE keeps online.Target RNC is thought to relocate successfully simultaneously.
Because the U-RNTI stored in now UE is old, it is necessary to be updated to the new U-RNTI of Target RNC distribution.Target RNC performs general
GSM land radio access web mobility information (UTRAN Mobility Information) process, update in UE
Old U-RNTI be Target RNC distribution new U-RNTI, after UE is updated successfully, Target RNC discharges new and old U-RNTI correspondence
Relation, only retain new U-RNTI.Wherein, UTRAN Mobility Information processes may be referred to 3GPP TS 25.331
Agreement V11.5.0 chapters and sections 14.12.4.2 protocol procedures.
It can complete to relocate by CELL UPDATE and UTRAN the Mobility Information processes in agreement
When, due to when descending step-out causes the CELL UPDATE that U-RNTI do not update to occur, not discharging UE, evaded existing protocol and
Using the deficiency of DSCR flows, improvement user perceives and lifted KPI, and (Key Performance Indicator, Key Performance refer to
Mark).During specific implementation：After Target RNC receives Relocation Request message, any stage receives carrying source RNC points
After the U-RNTI matched somebody with somebody CELL UPDATE messages, reorientation and CELL UPDATE and UTRAN Mobility can carry out
Information processes.
Reference picture 4, hypothesis is shown after source RNC sends Radio Bearer Reconfiguration, after UE step-outs
Report the reorientation flow chart of the U-RNTI of carrying source RNC distribution CELL UPDATE messages.Flow in described Fig. 4 can be with
It is summarised as following steps：
Step 1：PS or CS establishes the carrying (PS or CS RAB SETUP) of user plane, and UE uploads measurement report
(Measure_Report) to S-RNC (Source RNC, source RNC), measurement result selections of the source RNC in measurement report is cut
Change to the cell of Target RNC.Source RNC sends reorientation and requires that (Relocation Required) message requires to CN, reorientation
Message includes the resource information of source RNC distribution, wherein the U-RNTI of source RNC distribution be present.CN forwarding reorientations require message
For re-positioning request (Relocation Request) message to Target RNC.Above-mentioned reorientation requires message and re-positioning request
The transmission of message is by means of source RNC to Target RNC transparent vessel (Transparent Container).
Step 2：After Target RNC receives Relocation Request message, resource is distributed in Target RNC side, in target
RNC cell establishes Radio Link and IU interfaces and IUB connects port transmission bearing.Wherein, establish Radio Link include Target RNC to
Target NodeB sends wireless link request (Radio Link Setup Request) and target NodeB returns to Target RNC
Return wireless link response (Radio Link Setup Resporse) two processes.The resource of distribution includes Target RNC
The new U-RNTI of distribution.The resource information of distribution is included new U-RNTI composition radio bearers and resets (Radio by Target RNC
Bearer Reconfiguration) message be included in reset confirmation request (Relocation Request Acknowledge)
CN is issued in message.CN forwardings reset order (Relocation Command) message to source RNC.Above-mentioned replacement confirmation request disappears
Source RNC transparent vessel is arrived in the transmission of breath and replacement command messages by means of source Target RNC (Target RNC)
(Transparent Container)。
Step 3：After source RNC receives Relocation Command message, the Radio Bearer that will wherein include
Reconfiguration message issues UE, the descending step-outs of UE, sends CELL UPDATE messages to Target RNC.
Step 4：After Target RNC receives CELL UPDATE, judged according to the SRNC identity of U-RNTI in message same
The mark of Target RNC is different, inquires about new and old U-RNTI corresponding tables, gets corresponding new U-RNTI, tissue CELL UPDATE
Old U-RNTI is sent to UE by CONFIRM message.
Step 5：After UE receives CELL UPDATE CONFIRM message, enable and require new with postponing in message, send
Radio Bearer Reconfiguration Complete message is to Target RNC.
Step 6：After Target RNC receives Radio Bearer Reconfiguration Complete message, sent out to CN
Relocation Complete message is sent, completes reorientation flow.Target RNC sends UTRAN Mobility to UE simultaneously
Information notice UE renewals U-RNTI.
Step 7：After Target RNC receives the UTRAN Mobility Information Confirm message of UE responses, release
Put new and old U-RNTI corresponding relations.
Step 8：CN sends Iu release commands (Iu-Release Command) message, source of release RNC and UE to source RNC
Corresponding resource, IU and IUB carrying releases are performed, and Radio Link release, repositioning process are completed.Wherein, radio chains
Road release includes source RNC and sends Radio Link releasing request (Radio Link Deletion Request) and source to source NodeB
NodeB returns to Radio Link release response (Radio Link Deletion Resporse) two processes to source RNC.
In other stages after Target RNC receives CELL UPDATE messages, corresponded to as long as inquiring and new and old U-RNTI be present
It relation, may continue to perform reorientation flow, simply need sending Relocation Request to source RNC
CELL UPDATE and UTRAN Mobility Information processes are performed after Acknowledge message.
In summary, in the embodiment of the present invention, Target RNC establishes new and old U-RNTI corresponding relation, wherein, new U-RNTI
For the U-RNTI of Target RNC distribution, old U-RNTI is the U-RNTI of source RNC distribution.
When in cell update message carry source RNC distribution U-RNTI, that is, when carrying old U-RNTI, according to old U-RNTI with
The new and old U-RNTI established corresponding relation, it is determined that new U-RNTI, no longer performs DSCR strategy releases UE and access again, do not change association
View, evades the deficiency of the DSCR flows of existing protocol use, but uses cell update and UMTS in agreement
Two processes of land radio access web mobility message keep UE online, and call drop and PS speed do not fall zero to CS, improve user's sense
Know and lifted the KPI of reorientation.
Example IV
The cell update system in a kind of repositioning process provided in an embodiment of the present invention is discussed in detail.
Reference picture 5, show the cell update system construction drawing in a kind of repositioning process in the embodiment of the present invention.
The system can include：Source radio network controller RNC300, Target RNC 302, and user equipment (UE) 304.
The Target RNC 302 can be the device for realizing above method embodiment.The Target RNC 302 can include：Receiving module
3020, judge execution module 3022, cell update module 3024, notification module 3026.
The receiving module 3020, the cell update message sent for receiving the UE304.
The cell update message can include the UMTS land radio access web of source RNC300 distribution
Radio Network Temporary Identifier U-RNTI.
The judgement execution module 3022, for judging the service radio network of the U-RNTI in the cell update message
Whether the mark SRNC identity of controller are identical with the mark of the Target RNC 302；If it is different, then according to described small
Corresponding relation between the new U-RNTI preserved in U-RNTI and the Target RNC 302 in area's new information, is inquired and institute
The corresponding new U-RNTI of U-RNTI in cell update message is stated, and sends the U-RNTI in the cell update message to institute
State UE；Wherein, the U-RNT in the cell update message is the U-RNTI of source RNC300 distribution, and the new U-RNTI is described
The U-RNTI that Target RNC 302 distributes.
Preferably, it is described to judge U-RNTI of the execution module 3022 in the cell update message is sent to described
During UE304, organize cell update confirmation message and send to the UE304；Wherein, carried in the cell update confirmation message
U-RNTI in the cell update message that the UE304 is sent.
The cell update module 3024, enter for the U-RNTI in the UE304 in the cell update message
After row radio bearer is reset, receive the radio bearer that the UE304 is sent and reset completion message, complete cell update.
The notification module 3026, for receiving the wireless of the UE304 transmissions in the cell update module 3024
After carrying resets completion message, transmission UMTS land radio access web mobility message to the UE304,
Notify the UE304 that the U-RNTI in the cell update message is updated into new U-RNTI.
The notification module 3026, it is additionally operable to sending UMTS land radio access web mobility message
After to the UE304, receive the UMTS land radio access web mobility that the UE304 is sent and confirm
Message, discharge the corresponding relation of the U-RNTI and the new U-RNTI in the cell update message.
The UE304, for receive that the UE304 is sent in the Target RNC 302 cell update message before,
Receive the radio bearer that the source RNC300 is sent and reset message, and determine the UE304 and the Target RNC 302 cell
The descending step-out of generation, or do not receive the radio bearer and reset message, determine that the UE304 and source RNC300's is small
Descending step-out occurs for area.
The present embodiment cell update system is used to realize in aforesaid plurality of embodiment of the method in corresponding repositioning process
Cell update method, in the cell update system of the present embodiment, Target RNC establishes new and old U-RNTI corresponding relation, wherein,
New U-RNTI is the U-RNTI of Target RNC distribution, and old U-RNTI is the U-RNTI of source RNC distribution.
When in cell update message carry source RNC distribution U-RNTI, that is, when carrying old U-RNTI, according to old U-RNTI with
The new and old U-RNTI established corresponding relation, it is determined that new U-RNTI, using cell update in agreement and UMTS
Two processes of land radio access web mobility message keep UE online, and call drop and PS speed do not fall zero to CS, improve user's sense
Know and lifted the KPI of reorientation.
For system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, it is related
Part illustrates referring to the part of embodiment of the method.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
Cell update method and system in a kind of repositioning process provided above the embodiment of the present invention, carry out
It is discussed in detail, specific case used herein is set forth to the principle and embodiment of the present invention, above example
Illustrate to be only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, according to
According to the thought of the present invention, there will be changes in specific embodiments and applications, in summary, this specification content
It should not be construed as limiting the invention.
Claims (8)
- A kind of 1. cell update method in repositioning process, it is characterised in that including：Target radio network controller RNC receives the cell update message that user equipment (UE) is sent；The cell update message package Include the UMTS land radio access web Radio Network Temporary Identifier U-RNTI of source RNC distribution；The Target RNC judges the mark SRNC of the service wireless network controller of the U-RNTI in the cell update message Whether identity is identical with the mark of the Target RNC；If it is different, U-RNTI of the Target RNC in the cell update message is new with being preserved in the Target RNC Corresponding relation between U-RNTI, the new U-RNTI corresponding with the U-RNTI in the cell update message is inquired, concurrently Send the U-RNTI to the UE in the cell update message；Wherein, the new U-RNTI is the U- of Target RNC distribution RNTI；After U-RNTI of the Target RNC in the UE in the cell update message carries out radio bearer replacement, connect Receive the radio bearer that the UE is sent and reset completion message, complete cell update；Before the Target RNC receives the cell update message of user equipment (UE) transmission, methods described also includes：The UE receives the radio bearer that the source RNC is sent and resets message, and determines the small of the UE and the Target RNC Descending step-out occurs for area, or, the UE does not receive the radio bearer and resets message, determines the UE and the source RNC Cell descending step-out occurs.
- 2. according to the method for claim 1, it is characterised in that the Target RNC is sent in the cell update message U-RNTI to the UE, including：The Target RNC tissue cell update confirmation message is simultaneously sent to the UE；Wherein, in the cell update confirmation message Carry the U-RNTI in the cell update message that the UE is sent.
- 3. according to the method for claim 1, it is characterised in that the Target RNC receives the wireless of UE transmissions and held After completion message is put in load-carrying, methods described also includes：The Target RNC sends UMTS land radio access web mobility message to the UE, described in notice U-RNTI in the cell update message is updated to new U-RNTI by UE.
- 4. according to the method for claim 3, it is characterised in that the Target RNC sends UMTS land To after the UE, methods described also includes RAN Mobility message：The Target RNC receives the UMTS land radio access web mobility that the UE is sent and confirms to disappear Breath, discharge the corresponding relation of the U-RNTI and the new U-RNTI in the cell update message.
- 5. the cell update system in a kind of repositioning process, including：Source radio network controller RNC, Target RNC and user set Standby UE, it is characterised in that the Target RNC includes：Receiving module, the cell update message sent for receiving the UE；The cell update message includes source RNC distribution UMTS land radio access web Radio Network Temporary Identifier U-RNTI；Judge execution module, the mark of the service wireless network controller for judging the U-RNTI in the cell update message Whether SRNC identity are identical with the mark of the Target RNC；If it is different, then according in the cell update message Corresponding relation between the new U-RNTI preserved in U-RNTI and the Target RNC, inquire with the cell update message The corresponding new U-RNTI of U-RNTI, and send the U-RNTI to the UE in the cell update message；Wherein, it is described new U-RNTI is the U-RNTI of Target RNC distribution；Cell update module, carry out radio bearer for the U-RNTI in the UE in the cell update message and reset it Afterwards, receive the radio bearer that the UE is sent and reset completion message, complete cell update；The UE, for receive that the UE is sent in the Target RNC cell update message before, receive the source RNC The radio bearer of transmission resets message, and determines that descending step-out occurs for the UE and the Target RNC cell, or does not receive Message is reset to the radio bearer, determines that descending step-out occurs for the UE and source RNC cell.
- 6. system according to claim 5, it is characterised in that the judgement execution module disappears in the transmission cell update During U-RNTI to the UE in breath, tissue cell update confirmation message is simultaneously sent to the UE；Wherein, the cell update is true The U-RNTI carried in the cell update message that the UE is sent is recognized in message.
- 7. system according to claim 5, it is characterised in that the Target RNC also includes：Notification module, for the cell update module receive the radio bearer that the UE sends reset completion message it Afterwards, UMTS land radio access web mobility message is sent to the UE, notifies the UE by the cell U-RNTI in new information is updated to new U-RNTI.
- 8. system according to claim 7, it is characterised in thatThe notification module, it is additionally operable to sending UMTS land radio access web mobility message to the UE Afterwards, the UMTS land radio access web mobility confirmation message that the UE is sent is received, described in release The corresponding relation of the U-RNTI and new U-RNTI in cell update message.
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