CN101932051B - Method for handling switch overtime in evolution network, eNode-B and network system - Google Patents
Method for handling switch overtime in evolution network, eNode-B and network system Download PDFInfo
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Abstract
The invention discloses a method for handling switch overtime in an evolution network, an eNode-B and a network system. The method comprises the following steps: after receiving a timer switch overtime message, an S-eNB sends a switch cancelling message to a D-eNB to inform the D-eNB to finish the follow-up signaling data interactive process with an Evolved Packet Core (EPC). The technical scheme of the invention can reduce the processing complexity of the D-eNB and also reduce the signaling data interaction with the EPC when the switch is abnormal.
Description
Technical field
The present invention relates generally to the communications field, refers in particular to processing method, evolution base station and the gradual network system of switching overtime in a kind of Long Term Evolution (Long Term Evolution, LTE) network.
Background technology
Fig. 1 is evolution network framework schematic diagram, this network architecture comprises UE (User Equipment, subscriber equipment), evolution land radio access web (Evolved UMTS (Universal MobileTelecommunications System, universal mobile telecommunications system) Territorial Radio AccessNetwork, E-UTRAN) and evolution block core net (Evolved Packet Core, EPC).E-UTRAN is comprised of evolution base station (E-UTRAN NodeB, eNodeB), between eNodeB, by X2 interface, connects.EPC comprises: mobile management entity (Mobility Management Entity, MME), service SAE (System Architecture Evolvement, System Architecture Evolution) gateway (Serving SAEGateway) and packet data network SAE gateway (Packet Date Network SAE Gateway).Wherein, MME is responsible for the mobile management of chain of command, comprise user's context and mobile status management, distributing user temporary identity sign etc., with SGSN (the Serving GSN in existing network, service GSN) by S3 interface, connect, be connected by S1-MME interface with E-UTRAN, be connected by S1-U interface with service SAE gateway, in MME, be provided with timer; Service SAE gateway is responsible for for downlink data, initiating paging under idle condition, manages and preserves IP (Internet Protocol, procotol) bearing parameter and the interior routing iinformation of network etc.; PDN SAE gateway serves as the user's face anchor point between different access systems."Policy and Charging Rules Function entity (Policy and Charging RuleFunction, PCRF) and home network server (Home Subscriber Server, HSS) in system shown in Figure 1, have also been comprised.
In LTE system, switch and be divided into minizone switching in eNodeB, between the eNodeB by X2 interface, switch, and S1 mouth switches.The overall flow of switching between the eNodeB based on by X2 interface as shown in Figure 2.In the switching of X2 interface, the base station at the current place of UE is called to source evolution base station (SourceeNodeB, S-eNB), be the promoter of switch decision and switching flow, the base station that UE will be switched to is called object evolution base station (Destination eNodeB, what D-eNB), above-mentioned switching referred to is exactly that UE is switched to the process D-eNB control Yi Ge community from S-eNB.
If current wireless quality can not meet user's QOS (Quality of Service, service quality) demand, in order not affect user's impression, source evolution base station S-eNB (also referred to as S side) need to make switch decision, when meeting switching condition, the handover request message of the UE communication context that S side is preserved self by X2 mouth is forwarded to target evolution base station D-eNB (also referred to as D side) under the better community of other signal qualitys, comprising ERAB (the E-UTRAN Radio Access Bearer) information of serving for UE.D side is received after the UE context of S side, is that UE prepares required Radio Resource in this locality.When D side Radio Resource can be received one or more ERABS, D side sends to switch to S side to be confirmed, shows that the resource of D side is ready to.After S side receives that switching is confirmed, the UE up-downgoing data that self is preserved to D-eNB, issue switching command to UE by user plane anti-pass simultaneously, start TX2RELOCoverall timer (also referred to as switching timer) simultaneously.UE receives after switching command, at D side community initiating random access procedure, accesses successfully and to D side, sends handoff completion message afterwards at random, shows that UE has successfully been linked into D side community.When D-eNB receives after handoff completion message, D side control plane notice user plane carries out downlink data channel switching, and the switching flow of now eating dishes without rice or wine completes, and UE can be at D-eNB downlink data receiving.Owing to having there is variation in the ownership eNodeB of UE, D-eNB sends signaling PATH SWITCH request message notice EPC downlink transfer layer address by S1 mouth and changes, EPC receives after PATH SWITCH request message, if there is variation in EPC path handover success or uplink layer address, EPC sends PATH SWITCH acknowledge message notice D-eNB path handover success, the up switching of D-eNB control plane notice user plane, the upstream data of D-eNB just can be sent to SGW (Service Gate Way, gateway), now switched, the signaling process of whole process is referring to Fig. 3.
With reference to Fig. 4, in handoff procedure, S side is issuing RRC (Radio Resource Control, radio resource control) connection reallocation message (switching command) afterwards, started switching timer TX2RELOCoverall, as shown in Fig. 4 the 407th step.TX2RELOCoverall timer is for guaranteeing that S side arrives D side the anti-pass of user data can completely, wait for that D side switched rear transmission resource release message to S side simultaneously, S side has been received resource release message in timer, discharges the local resource that UE is relevant.
If timer TX2RELOCoverall is overtime, S side direction EPC sends UE context releasing request (Fig. 4 the 409th step), require EPC to discharge NAS (the Non-Access Stratum relevant to this UE, Non-Access Stratum) resource, EPC and S-eNB discharge respectively the related context (Fig. 4 the 411st, 412 steps) of UE subsequently.UE and D-eNB now do not know that EPC and S-eNB have discharged and own relevant contextual information.If UE accesses successfully at random, also can send reprovision and connect message to D-eNB (Fig. 4 the 413rd step), D-eNB receives that reprovision has connected message and carried out after inter-process, also can send PATH SWITCH request message to EPC, require EPC to upgrade downlink transfer layer address, now in EPC, the context relevant to this switching UE do not existed, only have to D-eNB and reply PATH SWITCH failed message, D-eNB receives after PATH SWITCH failed message, can only again send UE context releasing request message to EPC, again require EPC to discharge the contextual information (Fig. 4 the 416th step) of UE.D-eNB does not also know whether the resource of S-eNB discharges, and must send resource release message (Fig. 4 the 417th step) to S-eNB, but in fact at this moment S-eNB has not had UE relevant information.
By said process, can find out, after TX2RELOCoverall timer expiry, the action behavior of UE and D-eNB is unwanted to a great extent, as step 414, step 415, step 416 and step 417, therefore, the handling process of existing scheme is redundancy relatively, has increased the complexity realizing.
Summary of the invention
The present invention proposes processing method, evolution base station and the network system of switching overtime in a kind of evolvement network, can when switching is abnormal, reduce the processing complexity of target evolution base station D-eNB, reduces the Signalling exchange with evolution block core net equipment EPC.
The technical scheme of the embodiment of the present invention is achieved in that
A processing method for switching overtime in evolvement network, comprises step:
Source evolution base station S-eNB receives after switch overtime message, sends handover cancelling message to target evolution base station D-eNB, notifies described target evolution base station D-eNB to finish the follow-up signaling data reciprocal process with evolution block core net equipment EPC.
Preferably, also comprise step:
Described source evolution base station S-eNB sends user equipment (UE) context releasing request message to described evolution block core net equipment EPC, notifies described evolution block core net equipment EPC to discharge the Non-Access Stratum NAS resource relevant to user equipment (UE);
Described source evolution base station S-eNB discharges the resource relevant to described user equipment (UE) after receiving the user equipment (UE) context release command message that described evolution block core net equipment EPC sends;
Described source evolution base station S-eNB sends user equipment (UE) context Release complete to described evolution block core net equipment EPC.
A processing method for switching overtime in evolvement network, comprises step:
The handover cancelling message that target evolution base station D-eNB reception sources evolution base station S-eNB sends;
Described target evolution base station D-eNB, according to described handover cancelling message, finishes the follow-up signaling data reciprocal process with evolution block core net equipment EPC.
Preferably, after the handover cancelling message that described target evolution base station D-eNB reception sources evolution base station S-eNB sends, also comprise step:
Described target evolution base station D-eNB sends RRC connection release message to user equipment (UE);
Described target evolution base station D-eNB discharges the resource relevant with described user equipment (UE).
An evolution base station, for source, comprising:
The first transmitting element, for after receiving switch overtime message, sends handover cancelling message to other evolution base station, notifies other evolution base station to finish the follow-up signaling data reciprocal process with evolution block core net equipment EPC.
Preferably, also comprise:
The second transmitting element, notifies the user equipment (UE) context releasing request message of the Non-Access Stratum NAS resource that described evolution block core net equipment EPC release is relevant to described user equipment (UE) to described evolution block core net equipment EPC for sending;
The first receiving element, for receiving the user equipment (UE) context release command message of the resource that release that described evolution block core net equipment EPC sends is relevant to described user equipment (UE);
The 3rd transmitting element, for sending user equipment (UE) context Release complete to described evolution block core net equipment EPC.
An evolution base station, for destination, comprising:
The second receiving element, the handover cancelling message sending for receiving other evolution base station;
The first performance element, for according to the follow-up signaling data reciprocal process of the described handover cancelling end of message and evolution block core net equipment EPC.
Preferably, also comprise:
The 4th transmitting element, for sending RRC connection release message to user equipment (UE);
The second performance element, for discharging the resource relevant with described user equipment (UE).
A gradual network system, comprises user equipment (UE), source evolution base station S-eNB, target evolution base station D-eNB and evolution block core net equipment EPC;
Described source evolution base station S-eNB comprises:
The first transmitting element, for after receiving switch overtime message, send handover cancelling message to described target evolution base station D-eNB, notify described target evolution base station D-eNB to finish the follow-up signaling data reciprocal process with described evolution block core net equipment EPC;
Described target evolution base station D-eNB comprises:
The second receiving element, the handover cancelling message sending for receiving described source evolution base station S-eNB;
The first performance element, for according to the follow-up signaling data reciprocal process of the described handover cancelling end of message and described evolution block core net equipment EPC.
Preferably, described target evolution base station D-eNB also comprises:
The 4th transmitting element, for sending RRC connection release message to described user equipment (UE);
The second performance element, for discharging the resource relevant with described user equipment (UE).
Preferably, described source evolution base station S-eNB also comprises:
The second transmitting element, notifies the user equipment (UE) context releasing request message of the Non-Access Stratum NAS resource that described evolution block core net equipment EPC release is relevant to described user equipment (UE) to described evolution block core net equipment EPC for sending;
The first receiving element, for receiving the user equipment (UE) context release command message of the resource that release that described evolution block core net equipment EPC sends is relevant to described user equipment (UE);
The 3rd transmitting element, for sending user equipment (UE) context Release complete to described evolution block core net equipment EPC.
Technical scheme of the present invention is switching when abnormal, by source evolution base station S-eNB, to target evolution base station D-eNB, send handover cancelling message, notification target evolution base station D-eNB finishes the follow-up signaling data reciprocal process with evolution block core net equipment EPC, thereby avoided target evolution base station D-eNB to process unnecessary UU mouth and S1 mouth message, avoid target evolution base station D-eNB to send unwanted resource release message to source evolution base station S-eNB, thereby reduced system signaling expense, reduction system complexity.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is prior art evolution network framework schematic diagram;
Fig. 2 is the schematic diagram switching between the eNodeB based on X2 interface in prior art;
Fig. 3 is the signaling process figure of handoff procedure in evolvement network in prior art;
Fig. 4 is another signaling process figure of handoff procedure in evolvement network in prior art;
Fig. 5 is the signaling process figure of processing method first embodiment of switching overtime in a kind of evolvement network of the present invention;
Fig. 6 is the signaling process figure of processing method second embodiment of switching overtime in a kind of evolvement network of the present invention;
Fig. 7 is the signaling process figure of processing method the 3rd embodiment of switching overtime in a kind of evolvement network of the present invention;
Fig. 8 is the structural representation of a kind of gradual network system preferred embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment mono-:
With user equipment (UE), carry out data upload and video calling, because mobility has triggered switching, target evolution base station D-eNB does not receive RRC (Radio Resource Control, Radio Resource control) connect reprovision and complete message, source evolution base station S-eNB side TX2RELOCoverall timer expiry, cause S-eNB in handoff procedure to occur extremely, the present embodiment being described, with reference to Fig. 5.
Suppose that UE has existed 3 business, traffic ID is respectively 5,6,7.Wherein 5 is the default bearing ERabId of (or claiming acquiescence business), the 6th, FTP uploads the ERabId of business, 7 is the ErabId of video calling, the Uu mouth DrbId that these three business are corresponding, setting was respectively 3,4,5 (this DrbId is distributed by evolution base station eNB, and value is determined by eNB); Suppose that UE initial launching business is in the community of source evolution base station S-eNB, cell number is cell1, and moves to target evolution base station D-eNB, and the cell number of D-eNB is cell2, and Cell1 and cell2 be adjacent area each other.
Step 501, UE are to S-eNB reporting measurement reports.
UE FTP upload with video call process in, because mobile reason has met measurement relevant configuration, by UE to S-eNB reporting measurement reports.
Step 502, S-eNB make switch decision.
The measurement report that S-eNB reports UE is resolved, and finds D-eNB affiliated subdistrict cell2, can be as the Target cell of switching, and S-eNB makes switch decision.
Step 503, S-eNB send handover request message to D-eNB.
S-eNB sends handover request message to D-eNB, carry traffic ID and be the QOS information of 5,6,7 traffic aided in handover request message, has carried DrbId simultaneously and be 3,4,5 RB information.
Step 504, D-eNB send switch acknowledgment message to S-eNB.
D-eNB receives after handover request message, for uploading the signaling traffic that video traffic that business and ERabId are 7 and D-eNB need to set up, the ERabID FTP that is 6 prepares resource, resource is prepared successfully, after receiving successfully, D-eNB sends switch acknowledgment message to S-eNB, waits for that UE is linked into the community of D-eNB.
The data that step 505, S-eNB receive to D-eNB anti-pass S-eNB.
S-eNB receives after switch acknowledgment message, the business data packet of receiving to D-eNB anti-pass.S-eNB needs the downlink data packet that anti-pass is transmitted from EPC under normal circumstances, also needs the upstream data bag of anti-pass UE.In the present embodiment, S-eNB need to create six anti-pass passages, two up-downgoing transfer of data for default bearing wherein, two up-downgoing transfer of data of uploading business ErabId6 for FTP, two remaining up-downgoing transfer of data for video traffic ErabId7.
Step 506, S-eNB send RRC and connect reallocation message to UE.
S-eNB sends RRC according to the RRC contextual information in switch acknowledgment message to UE and connects reallocation message (switching command).
Step 507, startup timer.
Start TX2RELOCoverall timer, wait for that D-eNB completes after switching, the resource release message that sends release S side resource by D-eNB is to S-eNB.
Step 508, S-eNB receive TX2RELOCoverall overtime message.
Abnormal owing to switching, thus TX2RELOCoverall timer expiry caused.
Step 509, S-eNB send handover cancelling message to D-eNB.
Because switch overtime appears in S side, S-eNB sends handover cancelling message to D-eNB.
Step 510, S-eNB send UE context releasing request message to EPC.
S-eNB sends UE context releasing request message to EPC, requires EPC to discharge the NAS layer resource that this switching UE is relevant.
Step 511, EPC send UE context release command message to S-eNB.
Step 512, S-eNB send UE context Release complete to EPC.
S-eNB receives UE context release command message, discharges the related resource of this switching UE, to EPC, sends UE context Release complete.
Step 513, D-eNB send RRC connection release message to UE.
When D-eNB receives after the handover cancelling message of S-eNB transmission, to UE, send RRC connection release message.Because D-eNB does not now receive that the RRC of UE connects reprovision and completes message, in order to prevent UE from may access at random, send RRC connection reprovision and complete message, and D-ENODEB does not receive, consider releasing UE resources as early as possible, D-eNB sends RRC connection release message to UE, this message is sent RRC that rear D-eNB no longer processes UE and is connected reprovision and complete message, and D-eNB is released to and switches any resource that UE prepares.
Finishing switching now, D-eNB is mutual without carrying out any signaling data with EPC again.
In the present embodiment, described handover cancelling message can be after S-eNB sends UE context release message or S-eNB issue again D-eNB after receiving UE context release command message or sending UE context Release complete, described step 509 can be after described step 510 or described step 511 or described step 512.Under normal circumstances, chain of command can judge user's face is whether uploading data and the video call data that UE forwards transmits end, also be whether the data that Erab6 is relevant with ErabId7 are all successfully forwarded to D-eNB, if all successfully forward, discharge S-eNB local resource and can not cause the situation of data-bag lost.The TX2RELOCoverall timer now arranging due to S-eNB has entered release flow process ahead of time than normal condition, the time of leaving data inverse-transmitting for is relatively less, EPC side does not know that whether user is now in switching state yet, can not stop S-eNB to send data, thereby may cause the loss of business datum.
Technical scheme of the present invention is switching when abnormal, by source evolution base station S-eNB, to target evolution base station D-eNB, send handover cancelling message, notification target evolution base station D-eNB finishes the follow-up signaling data reciprocal process with evolution block core net equipment EPC, thereby avoided target evolution base station D-eNB to process unnecessary UU mouth and S1 mouth message, avoid target evolution base station D-eNB to send unwanted resource release message to source evolution base station S-eNB, thereby reduced system signaling expense, reduction system complexity.
Embodiment bis-:
As shown in Figure 6, with UE, carry out in FTP downloading process, because mobility has triggered switching, D-eNB receives that the RRC connection reprovision that UE sends completes message, and the TX2RELOCoverall timer expiry of S side, causes appearance in handoff procedure that the present embodiment is described extremely.
Suppose that UE has existed 2 business, traffic ID is respectively 5,6.Wherein 5 is the default bearing ERabId of (or claiming acquiescence business), the ERabId of the 6th, FTP downloading service.The Uu mouth DrbId that these two business are corresponding, setting was respectively 3,4 (DrbId is distributed by evolution base station eNB, and value is determined by eNB).Suppose that UE initial launching business is in S-eNB community, cell number is cell1, and is moving to D-eNB, and the community of D-eNB is cell2, and Cell1 and cell2 be adjacent area each other.
Step 601, UE are to S-eNB reporting measurement reports.
UE in FTP downloading process, because mobile reason has met measurement relevant configuration, by UE to S-eNB reporting measurement reports.
Step 602, S-eNB make switch decision.
The measurement report that S-eNB reports UE is resolved, and finds D-eNB affiliated subdistrict cell2, can be as the Target cell of switching, and S-eNB makes switch decision.
Step 603, S-eNB send handover request message to D-eNB.
S-eNB sends handover request message to D-eNB, carries traffic ID and be the QOS information of 5,6 traffic aided in handover request message, switches that in transparent vessel, to have carried DrbId be 3,4 RB information simultaneously.
Step 604, D-eNB send switch acknowledgment message to S-eNB.
D-eNB receives after handover request message, for the signaling traffic that the ERabID ftp business that is 6 and D-eNB need to set up, prepares resource, and resource is prepared successfully, receives successfully D-eNB afterwards to send switch acknowledgment message to S-eNB, and wait UE is linked into the community of D-eNB.
The data that step 605, S-eNB receive to D-eNB anti-pass S-eNB.
S-eNB receives after switch acknowledgment message, the ftp business packet of receiving to D-eNB anti-pass.S-eNB needs the downlink data packet that anti-pass is transmitted from EPC under normal circumstances, also needs the upstream data bag of anti-pass UE.
Step 606, S-eNB send RRC and connect reallocation message to UE.
S-eNB sends RRC according to the RRC contextual information in switch acknowledgment message to UE and connects reallocation message (switching command).
Step 607, startup timer.
Start TX2RELOCoverall timer, wait for that D-eNB completes after switching, the resource release message that sends release S side resource by D-eNB is to S-eNB.
Step 608, UE send RRC connection reprovision and complete message to D-eNB.
D-eNB receives that RRC connects reprovision and completes message, and variation has occurred the downlink transfer layer address that is respectively 5,6 business due to ERABID, and D-eNB need to notify the downlink transfer layer address of two business of EPC conversion, enters step 609.
Step 609, D-eNB send PATH SWITCH request message to EPC.
D-ENODEB sends PATH SWITCH request message to EPC, comprises that ERABID is 5 and 6 transport layer address and newly assigned Enb S1 APID.
Abnormal owing to switching, thus TX2RELOCoverall timer expiry caused.
Step 611, S-eNB send handover cancelling message to D-eNB.
Because switch overtime appears in S side, S-eNB sends handover cancelling message to D-eNB.
Step 612, S-eNB send UE context releasing request message to EPC.
S-eNB sends UE context releasing request message to EPC, requires EPC to discharge the NAS layer context that this switching UE is relevant.
Step 613, EPC send UE context release command message to S-eNB.
Step 614, S-eNB send UE context Release complete to EPC.
S-eNB receives UE context release command message, discharges the related resource of this switching UE, to EPC, sends UE context Release complete.
Step 615, D-eNB send RRC connection release message to UE.
D-eNB does not wait the PATH SWITCH acknowledge message of EPC, to UE, sends RRC connection release message, enters local resource release condition, prepares to discharge local resource.
EPC, S-eNB, D-eNB resource discharge, finishing switching now, and D-eNB is mutual without carrying out any signaling data with EPC again.
In the present embodiment, described handover cancelling message can be after S-eNB sends UE context release message or S-eNB issue again D-eNB after receiving UE context release command message or sending UE context Release complete, described step 611 can be after described step 612 or described step 613 or described step 614.
Technical scheme of the present invention is switching when abnormal, by source evolution base station S-eNB, to target evolution base station D-eNB, send handover cancelling message, notification target evolution base station D-eNB finishes the follow-up signaling data reciprocal process with evolution block core net equipment EPC, thereby avoided target evolution base station D-eNB to process unnecessary UU mouth and S1 mouth message, avoid target evolution base station D-eNB to send unwanted resource release message to source evolution base station S-eNB, thereby reduced system signaling expense, reduction system complexity.
Embodiment tri-:
As shown in Figure 7, with UE, carry out in FTP downloading process, because mobility has triggered switching, D-eNB receives the PATH SWITCH acknowledge message of EPC, and the TX2RELOCoverall timer expiry of S side causes appearance in handoff procedure that the present embodiment is described extremely.
Suppose that UE has existed 2 business, traffic ID is respectively 5,6.Wherein 5 is the default bearing ERabId of (or claiming acquiescence business), the ERabId of the 6th, FTP downloading service.The Uu mouth DrbId that these two business are corresponding, setting was respectively 3,4 (DrbId is distributed by evolution base station eNB, and value is determined by eNB).Suppose that UE initial launching business is in S-eNB community, cell number is cell1, and is moving to D-eNB, and the community of D-eNB is cell2, and Cell1 and cell2 be adjacent area each other.
Step 701, UE are to S-eNB reporting measurement reports.
UE in FTP downloading process, because mobile reason has met measurement relevant configuration, by UE to S-eNB reporting measurement reports.
Step 702, S-eNB make switch decision.
The measurement report that S-eNB reports UE is resolved, and finds D-eNB affiliated subdistrict cell2, can be as the Target cell of switching, and S-eNB makes switch decision.
Step 703, S-eNB send handover request message to D-eNB.
S-eNB sends handover request message to D-eNB, carries traffic ID and be the QOS information of 5,6 traffic aided in handover request message, switches that in transparent vessel, to have carried DrbId be 3,4 RB information simultaneously.
Step 704, D-eNB send switch acknowledgment message to S-eNB.
D-eNB receives after handover request message, for ERabID is that the signaling traffic that 5,6 ftp business and D-eNB need to set up is prepared resource, resource is prepared successfully, receives successfully rear D-eNB to send switch acknowledgment message to S-eNB, waits for that UE is linked into the community of D-eNB.
The data that step 705, S-eNB receive to D-eNB anti-pass S-eNB.
S-eNB receives after switch acknowledgment message, the ftp business packet of receiving to D-eNB anti-pass.S-eNB needs the downlink data packet that anti-pass is transmitted from EPC under normal circumstances, also needs the upstream data bag of anti-pass UE.
Step 706, S-eNB send RRC and connect reallocation message to UE.
S-eNB sends RRC according to the RRC contextual information in switch acknowledgment message to UE and connects reallocation message (switching command).
Step 707, startup timer.
Start TX2RELOCoverall timer, wait for that D-eNB completes after switching, the resource release message that sends release S side resource by D-eNB is to S-eNB.
Step 708, UE send RRC connection reprovision and complete message to D-eNB.
D-eNB receives that RRC connects reprovision and completes message, and variation has occurred the downlink transfer layer address that is respectively 5,6 business due to ERABID, and D-eNB need to notify the downlink transfer layer address of two business of EPC conversion, enters step 709.
Step 709, D-eNB send PATH SWITCH request message to EPC.
D-ENODEB sends PATH SWITCH request message to EPC, comprises that ERABID is 5 and 6 transport layer address and newly assigned Enb S1 APID.
710, EPC sends PATH SWITCH acknowledge message to D-eNB.
D-eNB receives PATH SWITCH acknowledge message, preserves the relevant MME S1AP ID of UE, and preservation ERABID is 5 and 6 uplink layer address.
Step 711, S-eNB receive TX2RELOCoverall overtime message.
Abnormal owing to switching, thus TX2RELOCoverall timer expiry caused.
Step 712, S-eNB send handover cancelling message to D-eNB.
Because switch overtime appears in S side, S-eNB sends handover cancelling message to D-eNB.
Step 713, S-eNB send UE context releasing request message to EPC.
S-eNB sends UE context releasing request message to EPC, requires EPC to discharge the NAS layer context that this switching UE is relevant.
Step 714, EPC send UE context release command message to S-eNB.
Step 715, S-eNB send UE context Release complete to EPC.
S-eNB receives UE context release command message, discharges the related resource of this switching UE, to EPC, sends UE context Release complete.
Step 716, D-eNB send RRC connection release message to UE.
D-eNB sends RRC connection release message to UE, enters local resource release condition, prepares to discharge local resource.
EPC, S-eNB, D-eNB resource discharge, finishing switching now, and D-eNB is mutual without carrying out any signaling data with EPC again.
In the present embodiment, described handover cancelling message can be after S-eNB sends UE context release message or S-eNB issue again D-eNB after receiving UE context release command message or sending UE context Release complete, described step 611 can be after described step 612 or described step 613 or described step 614.
Technical scheme of the present invention is switching when abnormal, by source evolution base station S-eNB, to target evolution base station D-eNB, send handover cancelling message, notification target evolution base station D-eNB finishes the follow-up signaling data reciprocal process with evolution block core net equipment EPC, thereby avoided target evolution base station D-eNB to process unnecessary UU mouth and S1 mouth message, avoid target evolution base station D-eNB to send unwanted resource release message to source evolution base station S-eNB, thereby reduced system signaling expense, reduction system complexity.
With reference to Fig. 8, the invention also discloses a kind of gradual network system, described gradual network system comprises user equipment (UE), source evolution base station S-eNB, target evolution base station D-eNB and evolution block core net equipment EPC.
Described source evolution base station S-eNB comprises:
The first transmitting element, for after receiving switch overtime message, sends notification target evolution base station D-eNB and finishes with the handover cancelling message of the follow-up signaling data reciprocal process of evolution block core net equipment EPC to described target evolution base station D-eNB.
Described target evolution base station D-eNB comprises:
The second receiving element, the handover cancelling message sending for reception sources evolution base station S-eNB.
The first performance element, for finishing the follow-up signaling data reciprocal process with described evolution block core net equipment EPC.
Described target evolution base station D-eNB also comprises:
The 4th transmitting element, for sending RRC connection release message to user equipment (UE).
The second performance element, for discharging the resource relevant with described user equipment (UE).
Described source evolution base station S-eNB also comprises:
The second transmitting element, notifies the user equipment (UE) context releasing request message of the Non-Access Stratum NAS resource that described evolution block core net equipment EPC release is relevant to described user equipment (UE) to described evolution block core net equipment EPC for sending;
The first receiving element, for receiving the user equipment (UE) context release command message of the resource that release that described evolution block core net equipment EPC sends is relevant to described user equipment (UE);
The 3rd transmitting element, for sending user equipment (UE) context Release complete to described evolution block core net equipment EPC.
The course of work of described gradual network system and operation principle are being described in detail in embodiment described in Fig. 5, Fig. 6, Fig. 7, for length, consider, do not repeat them here.
The invention also discloses a kind of evolution base station, for source, described evolution base station comprises:
The first transmitting element, for after receiving switch overtime message, sends handover cancelling message to other evolution base station, notifies other evolution base station to finish the follow-up signaling data reciprocal process with evolution block core net equipment EPC.
Also comprise:
The second transmitting element, notifies the user equipment (UE) context releasing request message of the Non-Access Stratum NAS resource that described evolution block core net equipment EPC release is relevant to described user equipment (UE) to described evolution block core net equipment EPC for sending;
The first receiving element, for receiving the user equipment (UE) context release command message of the resource that release that described evolution block core net equipment EPC sends is relevant to described user equipment (UE);
The 3rd transmitting element, for sending user equipment (UE) context Release complete to described evolution block core net equipment EPC.
The invention also discloses a kind of evolution base station, for destination, comprising:
The second receiving element, the handover cancelling message sending for receiving other evolution base station;
The first performance element, for according to the follow-up signaling data reciprocal process of the described handover cancelling end of message and evolution block core net equipment EPC.
Also comprise:
The 4th transmitting element, for sending RRC connection release message to user equipment (UE);
The second performance element, for discharging the resource relevant with described user equipment (UE).
The composition structure of described evolution base station and operation principle thereof please refer to the description of embodiment of the method and system embodiment part, do not repeat them here.
One of ordinary skill in the art will appreciate that; in each embodiment of the method for the present invention; the sequence number of described each step can not be for limiting the sequencing of each step; for those of ordinary skills; do not paying under the prerequisite of creative work, the priority of each step is being changed also within protection scope of the present invention.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a processing method for switching overtime in evolvement network, is characterized in that, comprises step:
Source evolution base station S-eNB receives after switch overtime message, sends handover cancelling message to target evolution base station D-eNB, notifies described target evolution base station D-eNB to finish the follow-up signaling data reciprocal process with evolution block core net equipment EPC;
Wherein,
Chain of command can judge user's face is whether uploading data and the video call data that user equipment (UE) forwards successfully forwards, if successfully forwarded:
Described source evolution base station S-eNB sends user equipment (UE) context releasing request message to described evolution block core net equipment EPC, notifies described evolution block core net equipment EPC to discharge the Non-Access Stratum NAS resource relevant to user equipment (UE);
Described source evolution base station S-eNB discharges the resource relevant to described user equipment (UE) after receiving the user equipment (UE) context release command message that described evolution block core net equipment EPC sends;
Described source evolution base station S-eNB sends user equipment (UE) context Release complete to described evolution block core net equipment EPC.
2. a processing method for switching overtime in evolvement network, is characterized in that, comprises step:
The handover cancelling message that target evolution base station D-eNB reception sources evolution base station S-eNB sends;
Described target evolution base station D-eNB, according to described handover cancelling message, finishes the follow-up signaling data reciprocal process with evolution block core net equipment EPC;
Wherein, chain of command can judge user's face is whether uploading data and the video call data that user equipment (UE) forwards successfully forwards, if successfully forwarded:
After the handover cancelling message that described target evolution base station D-eNB reception sources evolution base station S-eNB sends, also comprise step:
Described target evolution base station D-eNB sends RRC connection release message to user equipment (UE);
Described target evolution base station D-eNB discharges the resource relevant with described user equipment (UE).
3. an evolution base station, for source, is characterized in that, comprising:
The first transmitting element, for after receiving switch overtime message, sends handover cancelling message to other evolution base station, notifies other evolution base station to finish the follow-up signaling data reciprocal process with evolution block core net equipment EPC;
The second transmitting element, for judging user's face is whether uploading data and the video call data that user equipment (UE) forwards successfully forwards, if successfully forwarded, send and notify the user equipment (UE) context releasing request message of the Non-Access Stratum NAS resource that described evolution block core net equipment EPC release is relevant to described user equipment (UE) to described evolution block core net equipment EPC;
The first receiving element, for receiving the user equipment (UE) context release command message of the resource that release that described evolution block core net equipment EPC sends is relevant to described user equipment (UE);
The 3rd transmitting element, for sending user equipment (UE) context Release complete to described evolution block core net equipment EPC.
4. a gradual network system, is characterized in that, comprises user equipment (UE), source evolution base station S-eNB, target evolution base station D-eNB and evolution block core net equipment EPC;
Described source evolution base station S-eNB comprises:
The first transmitting element, for after receiving switch overtime message, send handover cancelling message to described target evolution base station D-eNB, notify described target evolution base station D-eNB to finish the follow-up signaling data reciprocal process with described evolution block core net equipment EPC;
Described target evolution base station D-eNB comprises:
The second receiving element, the handover cancelling message sending for receiving described source evolution base station S-eNB;
The first performance element, for according to the follow-up signaling data reciprocal process of the described handover cancelling end of message and described evolution block core net equipment EPC;
Described target evolution base station D-eNB also comprises:
The 4th transmitting element, for sending RRC connection release message to described user equipment (UE);
The second performance element, for discharging the resource relevant with described user equipment (UE);
Described source evolution base station S-eNB also comprises:
The second transmitting element, for judging user's face is whether uploading data and the video call data that user equipment (UE) forwards successfully forwards, if successfully forwarded, send and notify the user equipment (UE) context releasing request message of the Non-Access Stratum NAS resource that described evolution block core net equipment EPC release is relevant to described user equipment (UE) to described evolution block core net equipment EPC;
The first receiving element, for receiving the user equipment (UE) context release command message of the resource that release that described evolution block core net equipment EPC sends is relevant to described user equipment (UE);
The 3rd transmitting element, for sending user equipment (UE) context Release complete to described evolution block core net equipment EPC.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910087924.9A CN101932051B (en) | 2009-06-25 | 2009-06-25 | Method for handling switch overtime in evolution network, eNode-B and network system |
| PCT/CN2010/072103 WO2010148752A1 (en) | 2009-06-25 | 2010-04-23 | Method for processing handoff timeout in evolved network, evolved node b station and evolved network system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910087924.9A CN101932051B (en) | 2009-06-25 | 2009-06-25 | Method for handling switch overtime in evolution network, eNode-B and network system |
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| CN101932051A CN101932051A (en) | 2010-12-29 |
| CN101932051B true CN101932051B (en) | 2014-04-09 |
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| CN102905323A (en) * | 2011-07-29 | 2013-01-30 | 中兴通讯股份有限公司 | Processing method and processing system for nondestructive switching of relay node user interfaces |
| CN103582050B (en) * | 2012-07-19 | 2018-12-11 | 电信科学技术研究院 | A kind of method, system and the equipment of carrying switching |
| RU2734000C1 (en) * | 2016-11-04 | 2020-10-09 | Телефонактиеболагет Лм Эрикссон (Пабл) | Measurement signaling of change of secondary node in next generation radio network |
Citations (1)
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| CN101370283A (en) * | 2007-08-13 | 2009-02-18 | 华为技术有限公司 | Method and apparatus for processing non-access layer message in switching course of evolution network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101370283A (en) * | 2007-08-13 | 2009-02-18 | 华为技术有限公司 | Method and apparatus for processing non-access layer message in switching course of evolution network |
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| 3rd Generation Partnership Project Technical Specification Group.Evolved Universal Terrestrial Access Network (E-UTRAN) S1 Application Protocol (S1AP).《Evolved Universal Terrestrial Access Network (E-UTRAN) S1 Application Protocol (S1AP) 3GPP TS 36.413 V8.1.0 (2008-03)》.2008,第23、24页. * |
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| CN101932051A (en) | 2010-12-29 |
| WO2010148752A1 (en) | 2010-12-29 |
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