CN101902787B - Resource correlation method and system in reposition - Google Patents
Resource correlation method and system in reposition Download PDFInfo
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- CN101902787B CN101902787B CN200910085523.XA CN200910085523A CN101902787B CN 101902787 B CN101902787 B CN 101902787B CN 200910085523 A CN200910085523 A CN 200910085523A CN 101902787 B CN101902787 B CN 101902787B
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Abstract
The invention discloses a resource correlation method and a system in reposition. In the scheme of the invention, when UE requires to carry out reposition, after a target wireless access controller distributes wireless resource for the UE, a reposition identification number identifying the wireless resource is distributed for the UE and is transmitted by wireless resource response sent to a resource wireless access controller by the target wireless access controller, reposition requirement instruction sent to CN by the resource wireless access controller and the reposition information sent to the target wireless access controller by the CN; according to the reposition identification number of the received reposition information, the target wireless access controller associates the resource between the wireless access controller and CN distributed for the UE with the wireless resource distributed for the corresponding UE; and thus, in quick reposition treatment, resource distributed for the UE between the wireless access controller and CN is associated with the wireless resource distributed for the corresponding UE.
Description
Technical field
The present invention relates to moving communicating field, refer to especially resource correlation method and system in a kind of reorientation.
Background technology
In mobile communication system, user is keeping the situation upper/lower positions of business often to change, if Radio Access Controller judgement subscriber equipment (UE, User Equipment) wireless signal of the cell-of-origin at place covers and dies down, and will select wireless signal to cover better Target cell and switch.Radio Access Controller can be the radio network controller (RNC in 3G mobile communication system, Radio Network Controllcr), also can be the base station controller in 2G mobile communication system (BSC, Base Station Controller).
While not belonging to same Radio Access Controller management if the wireless access network type of cell-of-origin and Target cell is identical, the switching of UE is referred to as reorientation in system; If when the wireless access network type of cell-of-origin and Target cell is different, the switching of UE is referred to as reorientation between system.
In current mobile communication system, in the system in 2G mobile communication system and 3G mobile communication system, between reorientation and system, the processing procedure of reorientation is as follows:
Step 101～step 102: Radio Access Controller under cell-of-origin, be that source Radio Access Controller is determined and need to be initiated reorientation according to the measurement report of UE, to core net (CN, Core Network) initiate reorientation requirement, this reorientation carries target cell information in requiring.
The target cell information that step 103:CN carries in requiring according to the reorientation of receiving, to the Radio Access Controller under Target cell, be that Target Wireless access controller is initiated RELOCATION REQUEST message.
Step 104: Target Wireless access controller is received after RELOCATION REQUEST message, is UE distributing radio resource in Target cell, in the resource of Target cell ready and and CN between resource ready after, to CN, respond re-positioning request acknowledge message.
Step 105:CN receives after re-positioning request acknowledge message, to source Radio Access Controller, sends reorientation order, and notification source Radio Access Controller carries out the switching of UE.
Step 106: source Radio Access Controller is received after reorientation order, sends switching command to UE, notice UE initiates to switch, and in this switching command, carries target cell information.
Step 107:UE receives after switching command, switches, and according to the target cell information notification target Radio Access Controller carrying in switching command, has switched.
Step 108: Target Wireless access controller receives after the notice that UE switched, notice CN reorientation completes.
Step 109:CN receives that, after the notice that the reorientation of Target Wireless access controller completes, notification source Radio Access Controller discharges the related resource of UE.
Step 110: source Radio Access Controller is received after the notice that discharges UE related resource, the related resource of UE discharged, and notify CN to complete the release of UE related resource.
Each step of above process is that serial is carried out in time, this make step 101～step 106 during this period of time in, UE is still at the Radio Resource that uses cell-of-origin, if UE translational speed is very fast, the wireless signal of cell-of-origin will worsen rapidly, cause the probability of UE reorientation failure can be higher.
For above-mentioned situation, a kind of relocation loading mode has been proposed, by increase interaction message between Radio Access Controller, shorten the time delay of relocation process, realize quick reorientation, thereby improve the success rate of reorientation.In the processing procedure of this relocation loading mode, the Radio Resource distributing and the Radio Access Controller and the resource dependency between CN that for this UE, distribute need to be joined for UE.But, for the Radio Resource distributing for UE and the specific implementation that Radio Access Controller for this UE distribution and the resource dependency between CN join are never had to corresponding solution, and then this relocation loading mode cannot effectively be realized.
Summary of the invention
In view of this, main purpose of the present invention is to provide resource correlation method and the system in a kind of reorientation, and the Radio Access Controller distributing for UE is associated with the Radio Resource distributing for corresponding UE with the resource between CN.
For achieving the above object, technical scheme of the present invention is achieved in that
Resource correlation method in a kind of reorientation, when UE need to carry out reorientation, the method comprises: Target Wireless access controller is user equipment (UE) distributing radio resource, and be the reorientation identifier of this Radio Resource of UE allocation identification, this reorientation identifier is sent to by Target Wireless access controller the reorientation message that the Radio Resource response of source Radio Access Controller, reorientation that source Radio Access Controller is sent to core net CN require instruction, CN to be sent to Target Wireless access controller successively and transmits; Target Wireless access controller, according to the reorientation identifier in the reorientation message of receiving, is associated with the resource between CN the Radio Access Controller distributing for UE with the Radio Resource distributing for corresponding UE.
The deterministic process that described UE need to carry out reorientation specifically comprises: source Radio Access Controller determines that according to the load of UE community, current place and Target cell and/or disturbed condition UE need to carry out reorientation; And/or the community, current place that source Radio Access Controller measures according to UE and the signal strength signal intensity of Target cell determine that UE need to carry out reorientation.
Resource between described Radio Access Controller and CN: be that UE distributes by CN, or be that UE distributes by Target Wireless access controller; And/or, source Radio Access Controller sends described reorientation requirement instruction to CN, the method further comprises: when sending described reorientation requirement instruction to CN at source Radio Access Controller or delay setting-up time interval, and source Radio Access Controller sends switching command to UE; And/or, when described Target Wireless access controller is received from the handoff completion message of UE, also do not receive the reorientation message from CN, the method further comprises: Target Wireless access controller wait for to receive the described reorientation message from CN, sends relocation commit message after receiving described reorientation message to CN; And/or Target Wireless access controller further comprises after receiving described reorientation message: Target Wireless access controller detects after UE access, sends relocation detect-message to CN.
Described setting-up time is spaced apart: source Radio Access Controller sends reorientation to CN and requires instruction to the time interval of receiving from the repositioning instruction of CN, and it is poor to receive to UE transmission switching command to Target Wireless access controller with source Radio Access Controller from the absolute time in time interval of the handoff completion message of UE; Or, according to the time span of the empirical value configuration of reorientation test.
Described reorientation requires at least to comprise in instruction and described reorientation message: the field that contains reorientation identifier, this field is that source Radio Access Controller is to Target Wireless access controller information.
Describedly according to reorientation identifier, the Radio Access Controller distributing for UE is associated with the Radio Resource for corresponding UE distribution with the resource between CN, specifically comprise: from field source Radio Access Controller to Target Wireless access controller information, extract reorientation identifier, according to this reorientation identifier, the Radio Access Controller distributing for UE is associated with the Radio Resource distributing for corresponding UE with the resource between CN.
Described source Radio Access Controller to Target Wireless access controller information is: source RNC is to Target RNC transparent transmission information; Or old BSS is to the information of new BSS.
Resource interconnected system in a kind of reorientation, this system comprises: source Radio Access Controller, Target Wireless access controller and CN, wherein, described Target Wireless access controller is used to UE distributing radio resource, and be the reorientation identifier of this Radio Resource of UE allocation identification, to source Radio Access Controller, send the Radio Resource response that carries reorientation identifier, while receiving the reorientation message from CN, according to the reorientation identifier in this reorientation message, the Radio Access Controller distributing for UE is associated with the Radio Resource distributing for corresponding UE with the resource between CN, described source Radio Access Controller responds for the Radio Resource receiving from Target Wireless access controller, and by reorientation, requires instruction to be sent to CN described reorientation identifier, described CN is for being sent to Target Wireless access controller by described reorientation identifier by reorientation message.
CN is also used to UE to distribute the resource between Radio Access Controller and CN, or Target Wireless access controller is also used to UE to distribute the resource between Radio Access Controller and CN; And/or, when described Target Wireless access controller is received from the handoff completion message of UE, also do not receive the reorientation message from CN, described Target Wireless access controller is further used for wait for receiving the described reorientation message from CN, sends relocation commit message after receiving described reorientation message to CN; And/or Target Wireless access controller is further used for UE access signal to detect, and detects after UE accesses and sends relocation detect-message to CN.
Described reorientation requires at least to comprise in instruction and described reorientation message: the field that contains reorientation identifier, and this field is that source Radio Access Controller is to Target Wireless access controller information; Further, described source Radio Access Controller to Target Wireless access controller information is: source RNC is to Target RNC transparent transmission information; Or old BSS is to the information of new BSS.
In relevant the present invention program's quick repositioning process, under the prerequisite of protocol message of existing reorientation flow process that does not change Radio Access Controller and CN and UE, between Radio Access Controller, increase interaction message, Target Wireless access controller is UE distributing radio resource in Target cell, and distributes a reorientation identifier; Source Radio Access Controller is initiated reorientation to CN and is required instruction, this reorientation requires to carry reorientation identifier in instruction, this reorientation identifier is sent to Target Wireless access controller by reorientation message, Target Wireless access controller can, according to the reorientation identifier in the reorientation message of receiving, be associated with the resource between CN the Radio Access Controller distributing for UE with the Radio Resource distributing for corresponding UE.
In addition, because source Radio Access Controller sends the switching command of eating dishes without rice or wine to UE when initiating reorientation message to CN or after the certain hour of interval, parallel the carrying out of reorientation set-up procedure that UE is eated dishes without rice or wine between handoff procedure and Access Network and CN, shortened repositioning process total time, be reorientation time delay, improve reorientation success rate.
The present invention does not need to revise wireless access net controller and CN, and the protocol message flow process of UE, can directly application in existing 2G mobile communication system and 3G mobile communication system.
accompanying drawing explanation
Fig. 1 is existing reorientation flow chart;
Fig. 2 is quick reorientation implementation one flow chart in the present invention;
Fig. 3 is quick reorientation implementation two flow charts in the present invention;
Fig. 4 is the interior reorientation schematic flow sheet of the CS domain system of UMTS in the present invention;
Fig. 5 be in the present invention UMTS to reorientation schematic flow sheet between the CS domain system of GSM;
Fig. 6 is the treatment system structural representation in quick reorientation in the present invention.
embodiment
In the present invention, when UE need to carry out reorientation, Target Wireless access controller is UE distributing radio resource, and be the reorientation identifier (Relocation Identifier) of this Radio Resource of UE allocation identification, this reorientation identifier is sent to by Target Wireless access controller the reorientation message that the Radio Resource response of source Radio Access Controller, reorientation that source Radio Access Controller is sent to CN require instruction, CN to be sent to Target Wireless access controller successively and transmits; Target Wireless access controller, according to the reorientation identifier in the reorientation message of receiving, is associated with the resource between CN the Radio Access Controller distributing for UE with the Radio Resource distributing for corresponding UE.Resource between described Radio Access Controller and CN is the resource between feeling the pulse with the finger-tip mark Radio Access Controller and CN specifically, can be that UE distributes by CN, can be also that UE distributes by Target Wireless access controller.
Reorientation requires in instruction, because field source Radio Access Controller to the content of Target Wireless access controller information is transparent for CN, CN can intactly be forwarded to Target Wireless access controller by this field, therefore, can transmit reorientation identifier by this field.That is to say, when Radio Access Controller is RNC, reorientation requires the instruction positioning requirements message of attaching most importance to, field source RNC in reorientation requirement message is transparent to the content of Target RNC transparent transmission information (Source RNC To Target RNC Transparent Information, Source RNC To Target RNC Transparent Container) for CN, and CN is intactly forwarded to Target RNC by this field; Radio Access Controller is BSC, reorientation requires instruction to require message for switching, the content of switching the information (OldBSS To New BSS Information) of the extremely new BSS of the old BSS of field requiring in message is transparent for CN, and CN is intactly forwarded to target BS C by this field.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 2 is quick reorientation implementation one flow chart in the present invention, and the concrete processing procedure of reorientation implementation one comprises the following steps fast:
Step 201: source Radio Access Controller is determined the reorientation that need to initiate UE, to Target Wireless access controller, send radio resource request, request is UE distributing radio resource in Target cell, carries the information such as UE sign, UE present type of service, Target Cell Identifier in this radio resource request.
Source Radio Access Controller is determined being specifically treated to of reorientation need to initiate UE: the community, current place that source Radio Access Controller measures according to the load of UE community, current place and Target cell and/or disturbed condition and/or UE and the signal strength signal intensity of Target cell judge whether to initiate to Target cell reorientation.For example, a little less than source Radio Access Controller finds that UE current place that report, that measure cell signal strength, and Target cell signal strength signal intensity is stronger, determines the reorientation of initiating UE; And for example, Radio Access Controller finds that the traffic load of community, the current place of UE is too high, and the traffic load of Target cell is relatively low, determines the reorientation of initiating UE.
Between Radio Access Controller, there is logic interfacing, this logic interfacing is the IUR interface between RNC in 3G mobile communication system, or be the IUR-G interface between BSC in 2G mobile communication system, or the IUR-G interface between 3G mobile communication system RNC and 2G mobile communication system BSC.Like this, source Radio Access Controller can by and Target Wireless access controller between logic interfacing send radio resource request.
Step 202: Target Wireless access controller is received after radio resource request, it in Target cell, is UE distributing radio resource, and be the reorientation identifier of this Radio Resource of UE allocation identification, then to source Radio Access Controller, respond Radio Resource response, in the response of this Radio Resource, carry UE sign, for wireless resource information, the reorientation identifier of UE distribution, can also further carry the information such as Target Cell Identifier.
Correspondingly, Target Wireless access controller can by and source Radio Access Controller between logic interfacing send Radio Resource and respond.
Step 203～step 204: source Radio Access Controller is received after Radio Resource response, sends reorientation to CN and requires instruction, and, to UE, send switching command simultaneously.Described this reorientation requires the field source Radio Access Controller of instruction to comprise reorientation identifier to Target Wireless access controller information, and described reorientation requires also to carry UE in instruction and identifies and Target Cell Identifier.In described switching command, carrying in Target cell is the wireless resource information that UE distributes.
Step 205:CN receives after reorientation requirement instruction, according to Target Cell Identifier, to Target Wireless access controller, send reorientation message, in this reorientation message, carry UE sign and reorientation identifier, reorientation identifier is comprised by field source Radio Access Controller to Target Wireless access controller information.
Step 206: in time sequencing, compare with the time of receiving the handoff completion message that UE responds, Target Wireless access controller has first been received the reorientation message from CN, from field source Radio Access Controller to Target Wireless access controller information, extract reorientation identifier, according to this reorientation identifier, the Radio Access Controller distributing for UE is associated with the Radio Resource distributing for corresponding UE with the resource between CN, then to CN, responds relocation commit message.Resource between Radio Access Controller and CN can be that UE distributes by CN, and CN can inform Target Wireless access controller by Radio Access Controller and the resource between CN of distributing for UE by reorientation message; Also can receive after reorientation message at Target Wireless access controller, be that UE distributes by Target Wireless access controller.
Step 207:CN receives after relocation commit message, to source Radio Access Controller, sends repositioning instruction.
Step 208:UE receives after the switching command from source Radio Access Controller, according in Target cell for the wireless resource information of its distribution is switched, after having switched, to Target Wireless access controller, respond handoff completion message.
Step 207 sequentially, can not carried out before and after can having in time significantly with step 208 simultaneously, can one in front and one in back carry out yet.
Step 209: Target Wireless access controller is received after handoff completion message, sends reorientation complete instruction to CN.
Step 210～step 211:CN receives that reorientation completes after instruction, sends resource release order to source Radio Access Controller.After source Radio Access Controller receives that resource releases order, discharge the resource that UE is used, then to CN, respond resource Release complete.
Target Wireless access controller detects UE access signal, receive after the reorientation message in step 205, if UE detected in the wireless channel access of appointment, or UE detected afterwards in the wireless channel access of appointment, Target Wireless access controller just sends relocation detect-message to CN.
CN receives that the reorientation in step 203 requires after instruction, according to Target Cell Identifier, judges that current reorientation is the reorientation of CN inside or the reorientation between CN.If current reorientation is the reorientation of CN inside, i.e. CN before and after reorientation is identical, and subsequent processes is drawn identical with Fig. 2.If current reorientation is the reorientation between CN, it is the CN difference before and after reorientation, now, it is source CN that reorientation in receiving step 203 requires the CN of instruction, in subsequent processes, unillustrated in Fig. 2: source CN provides the field source Radio Access Controller that comprises reorientation identifier to Target Wireless access controller information to target CN, then target CN execution step 205; In receiving step 206, the CN of relocation commit message is target CN, and then target CN notification source CN sends repositioning instruction to source Radio Access Controller, source CN execution step 207; The CN that reorientation in receiving step 209 completes instruction is target CN, and then target CN notification source CN indicates source Radio Access Controller releasing resource, source CN execution step 210, and the CN of the resource Release complete in receiving step 211 is source CN.
Fig. 3 is quick reorientation implementation two flow charts in the present invention, and as shown in Figure 3, the concrete processing procedure of reorientation implementation two comprises the following steps fast:
Step 301～step 302 is identical with step 201～step 202.
Step 303～step 304: source Radio Access Controller is received after Radio Resource response, sent reorientation require instruction to CN; And, from sending to CN when reorientation requires instruction, start timing, postpone Hou， source, setting-up time interval Radio Access Controller and send switching command to UE.Described this reorientation requires the field source Radio Access Controller of instruction to comprise reorientation identifier to Target Wireless access controller information, and described reorientation requires also to carry UE in instruction and identifies and Target Cell Identifier.In described switching command, carrying in Target cell is the wireless resource information that UE distributes.
Setting-up time interlude length can refer to that rule of thumb statistics obtains.For example, source Radio Access Controller sends reorientation to CN and requires instruction to the time interval of receiving from the repositioning instruction of CN, source Radio Access Controller sends switching command to UE and receives the time interval from the handoff completion message of UE to Target Wireless access controller, and the absolute time in these two time intervals is poor as setting-up time interval; And for example, configure according to a preconcerted arrangement setting-up time interlude length; For another example, according to the empirical value configuration setting-up time interlude length of reorientation test.The value of the above time span can be zero or other positive numbers.
Step 305: in time sequencing, compare with receiving the time from the reorientation message of CN, Target Wireless access controller has first been received the handoff completion message that UE responds, and then waits for the reorientation message receiving from CN.
Step 306 is identical with step 205.
Step 307: Target Wireless access controller is received after reorientation message, from field source Radio Access Controller to Target Wireless access controller information, extract reorientation identifier, according to this reorientation identifier, the Radio Access Controller distributing for UE is associated with the Radio Resource distributing for corresponding UE with the resource between CN, then to CN, responds relocation commit message.Resource between Radio Access Controller and CN can be that UE distributes by CN, by CN, divides timing, and CN can inform that Target Wireless access controller is the Radio Access Controller of UE distribution and the resource between CN by reorientation message; Also can receive after reorientation message at Target Wireless access controller, be that UE distributes by Target Wireless access controller.
Step 308: because Target Wireless access controller has been received the handoff completion message from UE, therefore, send reorientation to CN and complete instruction.
Step 309 is identical with step 207.
Step 310～step 311 is identical with step 210～step 211.
Step 308 sequentially, can not carried out before and after can having in time significantly with step 309 simultaneously, can one in front and one in back carry out yet.
Target Wireless access controller detects UE access signal, receive after the reorientation message in step 306, if UE detected in the wireless channel access of appointment, or UE detected afterwards in the wireless channel access of appointment, Target Wireless access controller just sends relocation detect-message to CN.
CN receives that the reorientation in step 303 requires after instruction, according to Target Cell Identifier, judges that current reorientation is the reorientation of CN inside or the reorientation between CN.If current reorientation is the reorientation of CN inside, subsequent processes is drawn identical with Fig. 3.If current reorientation is the reorientation between CN, follow-up concrete processing and the description of Fig. 2 latter end are basic identical, do not repeat them here.
Fig. 4 is universal mobile telecommunications system (UMTS in the present invention, Universal MobileTelecommunications System) reorientation schematic flow sheet in circuit switching (CS) domain system, as shown in Figure 4, in this example, Target RNC and source RNC belong to same CN, and, in concrete processing procedure, Target RNC is first received the RELOCATION REQUEST message from CN, after receive the handoff completion message from UE.The concrete processing procedure that realizes quick reorientation comprises the following steps:
Step 401～step 402:UE has successfully set up CS business in YuanRNC community 1.After UE moves, source RNC determines the reorientation that need to initiate UE according to the measurement report of UE, and select target RNC community 2 is as Target cell.Source RNC sends radio resource request by IUR interface to Target RNC, and request 2 is UE distributing radio resource in community, carries the information such as UE sign, UE present type of service, community 2 signs in this radio resource request.In the radio resource request transmitting between RNC, the signal of entrained particular content is as shown in table 1.
| Field name | Value explanation |
| UE ability | Comprise the abilities such as wireless access technology that UE supports, type of service |
| Cell ID | The sign of Target cell |
| Type of service | The type of service of the resource of request reorientation |
| UE sign | The sign of the UE of reorientation, can be the IMSI of UE or SRNTI (the interim UE sign of source RNC) etc. |
Table 1
Step 403: Target RNC is received after radio resource request, in community, 2 is UE distributing radio resource, and be the reorientation identifier of this Radio Resource of UE allocation identification, then by IUR interface, to source RNC, responding Radio Resource responds, in the response of this Radio Resource, carry UE sign, for wireless resource information, the reorientation identifier of UE distribution, can also further carry the information such as community 2 signs.In the Radio Resource response transmitting between RNC, the signal of entrained particular content is as shown in table 2.
| Field name | Value explanation |
| UE sign | The sign of the UE of reorientation, can be the IMSI of UE or SRNTI (the interim UE sign of source RNC) etc. |
| Radio Resource | It in Target cell, is the Radio Resource that UE distributes |
| Reorientation identifier | Target RNC is unique identifier that UE distributes, and when receiving RELOCATION REQUEST message, inquires about corresponding Radio Resource |
Table 2
Step 404～step 405: source RNC receives after Radio Resource response, sends reorientation require message to CN; And, from CN, send when reorientation requires message and start timing, postpone Hou， source, setting-up time interval RNC and send 3G switching command message to UE.
Described this reorientation requires the field source RNC of message to comprise reorientation identifier to Target RNC transparent transmission information (Source RNCTo Target RNC Transparent Container), also carries UE sign and community 2 signs in described reorientation requirement message.In described 3G switching command message, carry 2 wireless resource information for UE distribution in community.
Setting-up time interval is to configure according to the empirical value of reorientation test, as 500ms, 0ms or other numerical value.
Field source RNC is as shown in table 3 to the signal of the particular content comprising in Target RNC transparent transmission information (Source RNC To Target RNC TransparentContainer).
| Field element |
| RRC container (RRC Container) |
| Iu example number (Number of Iu Instances) |
| Reorientation type (Relocation Type) |
| The protection algorithm integrallty (Chosen Integrity Protection Algorithm) of selecting |
| Many rate configuration information (MultiRate configuration information) |
| ?...... |
| Reorientation identifier (Relocation Identifier) |
Table 3
Step 406:CN receives after reorientation requirement message, according to community 2 signs, determine that current reorientation is the reorientation of CN inside, then for UE distributes the resource between Target RNC and CN, and to Target RNC, send RELOCATION REQUEST message according to community 2 signs, in this RELOCATION REQUEST message, carry UE sign and reorientation identifier, reorientation identifier is comprised to Target RNC transparent transmission information by field source RNC, also carries RNC that promising UE distributes and the resource between CN in this RELOCATION REQUEST message.
Step 407: in time sequencing, compare with the time of receiving the handoff completion message that UE responds, Target RNC has first been received the RELOCATION REQUEST message from CN, from field source RNC to Target RNC transparent transmission information, extract reorientation identifier, according to this reorientation identifier, the RNC carrying in RELOCATION REQUEST message, distribute for UE is associated with the Radio Resource distributing for corresponding UE with the resource between CN, then to CN, responds re-positioning request acknowledge message.
Step 408:CN receives after re-positioning request acknowledge message, to source RNC, sends reorientation command messages.
Step 409:UE receives after the 3G switching command message from source RNC, according to 2 switching for the wireless resource information of its distribution in community, after having switched, to Target RNC, responds handoff completion message.
Step 410: Target RNC is received after handoff completion message, sends reorientation complete message to CN.
Step 411～step 412:CN receives that reorientation completes after message, to source RNC, sends IU release command message.Source RNC receives after IU release command message, discharges the related resource that UE is used, and then to CN, responds IU Release complete.
Target RNC detects UE access signal, receive after the RELOCATION REQUEST message in step 406, if UE detected in the wireless channel access of appointment, or UE detected afterwards in the wireless channel access of appointment, Target RNC just sends relocation detect-message to CN.
Fig. 5 be in the present invention UMTS to global system for mobile communications (GSM, reorientation schematic flow sheet between CS domain system Global System ForMobile Communication), as shown in Figure 5, in this example, target BS C belongs to different CN from source RNC, and, in concrete processing procedure, Target RNC is first received the handoff completion message from UE, after receive the RELOCATION REQUEST message from CN.The concrete processing procedure that realizes quick reorientation comprises the following steps:
Step 501～step 502:UE has successfully set up CS business in YuanRNC community 1.After UE moves, source RNC determines the reorientation that need to initiate UE according to the measurement report of UE, and select target BSC community 2 is as Target cell.Source RNC sends radio resource request by IUR-G interface to target BS C, and request 2 is UE distributing radio resource in community, carries the information such as UE sign, UE present type of service, community 2 signs in this radio resource request.In the radio resource request transmitting between RNC and BSC, the signal of entrained particular content is as shown in table 4.
| Field name | Value explanation |
| UE ability | Comprise the abilities such as wireless access technology that UE supports, type of service |
| Cell number sign | The sign of Target cell, as CGI |
| Type of service | The type of service of the resource of request reorientation |
| UE sign | The sign of the UE of reorientation, can be the IMSI of UE or SRNTI etc. |
Table 4
Step 503: target BS C receives after radio resource request, in community, 2 is UE distributing radio resource, and be the reorientation identifier of this Radio Resource of UE allocation identification, then by IUR-G interface, to source RNC, responding Radio Resource responds, in the response of this Radio Resource, carry UE sign, for wireless resource information, the reorientation identifier of UE distribution, can also further carry the information such as community 2 signs.In the Radio Resource response transmitting between BSC and RNC, the signal of entrained particular content is as shown in table 5.
| Field name | Value explanation |
| UE sign | The sign of the UE of reorientation, can be the IMSI of UE or SRNTI or DRNTI or other UE sign |
| Radio Resource | It in Target cell, is the Radio Resource that UE distributes |
| Reorientation identifier | Target Wireless access controller is unique identifier that UE distributes, and when receiving reorientation message, inquires about corresponding Radio Resource |
Table 5
Step 504～step 505: source RNC receives after Radio Resource response, sends reorientation to CN and requires message, and, to UE, send 2G switching command message simultaneously.
Described this reorientation requires the field source BSC of message to comprise reorientation identifier to target BS C information (Old BSS to NewBSS information), also carries UE sign and community 2 signs in described reorientation requirement message.In described 2G switching command message, carry 2 wireless resource information for UE distribution in community.
The signal of the particular content comprising in the extremely new BSC information (Old BSS to New BSS information) of the old BSC of field is as shown in table 6.
| Field element |
| Extraneous information (Extra information) |
| Current channel type 2 (Current Channel Type 2) |
| Target cell wireless messages (Target cell radio information) |
| GPRS hangs up information (GPRS Suspend information) |
| Many rate configuration information (MultiRate configuration information) |
| ?...... |
| Reorientation identifier (Relocation Identifier) |
Table 6
Step 506: in time sequencing, compare with receiving the time from the handover request message of CN, target BS C has first received the handoff completion message that UE responds, and then waits for the handover request message receiving from CN.
Step 507:CN receives after reorientation requirement message, according to community 2 signs, determine that current reorientation is the reorientation between CN, this CN is source CN, therefore, source CN provides the old BSC of the field that comprises reorientation identifier to new BSC information to target CN, target CN sends handover request message according to community 2 signs to target BS C, carries UE sign and reorientation identifier in this handover request message, and reorientation identifier is comprised by the extremely new BSC information of the old BSC of field.
Step 508: target BS C receives after handover request message, for UE distributes the resource between BSC and CN, and to new BSC information, extract reorientation identifier from the old BSC of field, according to this reorientation identifier, BSC is associated with the Radio Resource distributing for corresponding UE with the resource between CN, then to target CN, responds switching request acknowledgement message.
Step 509: because target BS C has received the handoff completion message from UE, therefore, send handoff completion message to target CN.
Step 510: target CN receives after switching request acknowledgement message, and notification source CN sends reorientation command messages to source RNC, and CNXiang source, source RNC sends reorientation command messages.
Step 511～step 512: CNXiang source, source RNC sends IU release command message.Source RNC receives after IU release command message, discharges the related resource that UE is used, and then to source CN, responds IU Release complete.
Target BS C detects UE access signal, receive after the handover request message in step 507, if UE detected in the wireless channel access of appointment, or UE detected afterwards in the wireless channel access of appointment, target BS C just sends relocation detect-message to target CN.
Fig. 6 is the treatment system structural representation in quick reorientation in the present invention, as shown in Figure 6, this system comprises: source Radio Access Controller, Target Wireless access controller and CN, wherein, Target Wireless access controller is used to UE distributing radio resource, and be the reorientation identifier of this Radio Resource of UE allocation identification, to source Radio Access Controller, send the Radio Resource response that carries reorientation identifier, and according to the reorientation identifier from CN, the Radio Access Controller distributing for UE is associated with the Radio Resource distributing for corresponding UE with the resource between CN, source Radio Access Controller responds for the Radio Resource receiving from Target Wireless access controller, and by reorientation, requires instruction to be sent to CN described reorientation identifier, CN is for being sent to Target Wireless access controller by described reorientation identifier by reorientation message.
CN is also used to UE to distribute the resource between Radio Access Controller and CN; Or Target Wireless access controller is also used to UE to distribute the resource between Radio Access Controller and CN.
Radio Access Controller can be the RNC in 3G mobile communication system, can be also the BSC in 2G mobile communication system.
Between source Radio Access Controller and Target Wireless access controller, there is logic interfacing, this logic interfacing is the IUR interface between RNC in 3G mobile communication system, or be the IUR-G interface between BSC in 2G mobile communication system, or the IUR-G interface between 3G mobile communication system RNC and 2G mobile communication system BSC.
When Target Wireless access controller is received from the handoff completion message of UE, also do not receive the reorientation message from CN, Target Wireless access controller is further used for wait for receiving the reorientation message from CN, sends relocation commit message after receiving described reorientation message to CN.
Reorientation requires at least to comprise in instruction and reorientation message: the field that contains reorientation identifier, this field is that source Radio Access Controller is to Target Wireless access controller information.Source Radio Access Controller to Target Wireless access controller information is that RNC is to the information of Target RNC transparent transmission information or the extremely new BSS of old BSS.
Target Wireless access controller is further used for UE access signal to detect, and detects after UE accesses and sends relocation detect-message to CN.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. the resource correlation method in reorientation, is characterized in that, when UE need to carry out reorientation, the method comprises:
After Target Wireless access controller is user equipment (UE) distributing radio resource, for the reorientation identifier of this Radio Resource of UE allocation identification, this reorientation identifier is sent to by Target Wireless access controller the reorientation message that the Radio Resource response of source Radio Access Controller, reorientation that source Radio Access Controller is sent to core net CN require instruction, CN to be sent to Target Wireless access controller successively and transmits;
Target Wireless access controller, according to the reorientation identifier in the reorientation message of receiving, is associated with the resource between CN the Radio Access Controller distributing for UE with the Radio Resource distributing for corresponding UE;
Target Wireless access controller further comprises after receiving described reorientation message: Target Wireless access controller detects after UE access, to CN, sends relocation detect-message.
2. method according to claim 1, is characterized in that, the deterministic process that described UE need to carry out reorientation specifically comprises:
Source Radio Access Controller determines that according to the load of UE community, current place and Target cell and/or disturbed condition UE need to carry out reorientation; And/or,
The community, current place that source Radio Access Controller measures according to UE and the signal strength signal intensity of Target cell determine that UE need to carry out reorientation.
3. method according to claim 1, is characterized in that,
Resource between described Radio Access Controller and CN: be that UE distributes by CN, or be that UE distributes by Target Wireless access controller; And/or,
Source Radio Access Controller sends described reorientation requirement instruction to CN, the method further comprises: when sending described reorientation requirement instruction to CN at source Radio Access Controller or delay setting-up time interval, and source Radio Access Controller sends switching command to UE; And/or,
When described Target Wireless access controller is received from the handoff completion message of UE, also do not receive the reorientation message from CN, the method further comprises: Target Wireless access controller wait for to receive the described reorientation message from CN, sends relocation commit message after receiving described reorientation message to CN.
4. method according to claim 3, is characterized in that, described setting-up time is spaced apart:
Source Radio Access Controller sends reorientation to CN and requires instruction to the time interval of receiving from the repositioning instruction of CN, and it is poor to receive to UE transmission switching command to Target Wireless access controller with source Radio Access Controller from the absolute time in time interval of the handoff completion message of UE; Or,
According to the time span of the empirical value configuration of reorientation test.
5. according to the arbitrary described method of claim 1 to 4, it is characterized in that, described reorientation requires at least to comprise in instruction and described reorientation message: the field that contains reorientation identifier, this field is that source Radio Access Controller is to Target Wireless access controller information.
6. method according to claim 5, it is characterized in that, describedly according to reorientation identifier, the Radio Access Controller distributing for UE is associated with the Radio Resource for corresponding UE distribution with the resource between CN, specifically comprise: from field source Radio Access Controller to Target Wireless access controller information, extract reorientation identifier, according to this reorientation identifier, the Radio Access Controller distributing for UE is associated with the Radio Resource distributing for corresponding UE with the resource between CN.
7. method according to claim 5, is characterized in that, described source Radio Access Controller to Target Wireless access controller information is: source RNC is to Target RNC transparent transmission information; Or old BSS is to the information of new BSS.
8. the resource interconnected system in reorientation, is characterized in that, this system comprises: source Radio Access Controller, Target Wireless access controller and CN, wherein,
Described Target Wireless access controller is used to UE distributing radio resource, and be the reorientation identifier of this Radio Resource of UE allocation identification, to source Radio Access Controller, send the Radio Resource response that carries reorientation identifier, while receiving the reorientation message from CN, according to the reorientation identifier in this reorientation message, the Radio Access Controller distributing for UE is associated with the Radio Resource for corresponding UE distribution with the resource between CN; Be further used for UE access signal to detect, detect after UE accesses and send relocation detect-message to CN;
Described source Radio Access Controller responds for the Radio Resource receiving from Target Wireless access controller, and by reorientation, requires instruction to be sent to CN described reorientation identifier;
Described CN is for being sent to Target Wireless access controller by described reorientation identifier by reorientation message.
9. system according to claim 8, is characterized in that,
CN is also used to UE to distribute the resource between Radio Access Controller and CN, or Target Wireless access controller is also used to UE to distribute the resource between Radio Access Controller and CN; And/or,
When described Target Wireless access controller is received from the handoff completion message of UE, also do not receive the reorientation message from CN, described Target Wireless access controller is further used for wait for receiving the described reorientation message from CN, sends relocation commit message after receiving described reorientation message to CN.
10. system according to claim 8 or claim 9, is characterized in that,
Described reorientation requires at least to comprise in instruction and described reorientation message: the field that contains reorientation identifier, and this field is that source Radio Access Controller is to Target Wireless access controller information;
Further, described source Radio Access Controller to Target Wireless access controller information is: source RNC is to Target RNC transparent transmission information; Or old BSS is to the information of new BSS.
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| PCT/CN2010/072583 WO2010135952A1 (en) | 2009-05-25 | 2010-05-10 | Method and system for resource association in relocation |
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| CN102595538B (en) * | 2011-01-12 | 2017-08-01 | 中兴通讯股份有限公司 | A kind of method and system for realizing reorientation |
| US20160198373A1 (en) * | 2013-07-16 | 2016-07-07 | Telefonaktiebolaget L M Ericsson (Publ) | Mobility Enhancement in Heterogeneous Networks |
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| FI20045345A0 (en) * | 2004-09-17 | 2004-09-17 | Nokia Corp | Communication method and network element |
| EP1820301A4 (en) * | 2004-12-09 | 2012-10-17 | Samsung Electronics Co Ltd | Method and system for relocating serving radio network controller in a network sharing system |
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