CN102905333B

CN102905333B - For changing method and the corresponding eNB node of Long-Term Evolution GSM

Info

Publication number: CN102905333B
Application number: CN201110214816.0A
Authority: CN
Inventors: 钱荣福; 徐浩; 郭伟; 周加铳
Original assignee: Alcatel Lucent Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2016-05-18
Anticipated expiration: 2031-07-29
Also published as: CN102905333A

Abstract

The invention provides a kind of changing method for Long-Term Evolution GSM and corresponding eNB node, the method comprises: to user device configuration comprise with for triggering the measurement requirement of switching the measurement report prepared and arranging for triggering the relevant parameter of the measurement report of switching; Receive the measurement report of preparing for triggering switching from subscriber equipment; Switch for triggering the measurement report of preparing according to received, judgement is switched; Obtain and switch relevant wireless resource control connection reconfiguration information; Store described wireless resource control connection reconfiguration information; Receive from subscriber equipment for triggering the measurement report of switching; Provide stored wireless resource control connection reconfiguration information to switch to start to subscriber equipment; And after handover success, discharge related resource.

Description

For changing method and the corresponding eNB node of Long-Term Evolution GSM

Technical field

The present invention relates to 3GPP Long-Term Evolution (LongTermEvolution is called for short LTE) movesMoving communication system, particularly, relates to the handoff technique in LTE GSM.

Background technology

LTE technology is the evolution of 3G (Third Generation) Moblie technology 3G, be 3G technology and 4G technology itBetween transition.

Fig. 1 shows the schematic diagram of the general framework of LTE GSM. As shown in Figure 1,LTE communications network system adopts two-layer flat network architectures conventionally, comprises (the letter below by eNodeBBe called eNB) node form Access Network E-UTRAN and by Mobility Management Entity (MobilityManagementEntity, referred to as MME) and gateway (ServingGateway, letterBe called SGW) form Evolved Packet Core (EvolvedPacketCorenetwork, letterBe called EPC) node. Access Network E-UTRAN be provided to subscriber equipment (UserEquipment,Referred to as UE) user's face and chain of command agreement. Between eNB node, undertaken alternately by X2 interface,ENB node is connected with EPC node by S1 interface. Although only show for convenience of explanation in Fig. 1Gone out an EPC node, but in fact LTE GSM can comprise multiple EPC nodes,Each EPC node is connected with multiple eNB nodes.

Switching in LTE GSM is according to the Target cell switching and the ownership position of cell-of-originPut relation, can be divided between the interior switching of connecting system and connecting system and switch, wherein, connecting systemInterior switching comprises that between eNB node interior (intra-eNB) switching, eNB node, (inter-eNB) cutsChange and MME between switch. In addition, according to the frequency relation of Target cell and cell-of-origin, switching can divideFor switching with frequency (intra-frequency) and alien frequencies (inter-frequency) switching.

Conventionally, the handoff procedure in LTE GSM comprises following three phases: handover measurement,Switch decision and switching are carried out. The situation of switching for intra-eNB, in the handover measurement stage, usesFamily equipment UE is independently measured according to the measurement configuration of cell-of-origin, and is meeting after report condition,User equipment (UE) is to cell-of-origin reporting measurement reports. In the switch decision stage, cell-of-origin is according to userWhether the measurement report judgement user equipment (UE) that equipment UE reports needs to switch to Target cell.In handover execution stage, cell-of-origin sends and cuts to user equipment (UE) according to the preparation of Target cellChange order, so that user equipment (UE) is switched to Target cell. Switch or MME for inter-eNBBetween switch situation, above-mentioned handover measurement, switch decision and handover execution stage need subscriber equipmentUE, source eNB node, target eNB node and EPC node have cooperated jointly.

Describe for several situations of switching between eNB node below.

Between situation 1:eNB node, switch with frequency

Fig. 2 schematically shows in existing connecting system and cuts between the eNB node based on X2 interfaceThe process of changing, it can be divided into, and switching is prepared, switching is carried out and switching completes three steps, these three stepsSuddenly be included in above-mentioned handover execution stage.

Before switching preparation process, source eNB node (is measured by MeasurementControlControl) measurement of message arrangement user equipment (UE). Measuring control message is that source eNB node is issued useThe measurement requirement of family equipment UE, can comprise measure mark, measuring command, measurement type, measure rightResemble, the information such as measuring amount, report amount, measurement report criterion, measurement clearance. Wherein, measure typeCan be common frequency measurement, different-frequency measure etc. Measuring amount be for example Reference Signal Received Power RSRP,Reference Signal Received Quality RSRQ etc. Measurement report criterion refers to the triggering criterion of measurement report, exampleAs the cycle triggers or Event triggered. So-called Event triggered refers in the time meeting the condition of event, sends and surveysAmount report. In with frequency handoff procedure, measure type and be configured to common frequency measurement, measurement report criterionBe configured to for example A3 event, neighbor cell quality is better than Serving cell quality, and difference exceedesAppointed threshold. User equipment (UE) measures after control message receiving, according to measuring control messageContent, measures, and in the time meeting measurement report criterion, sends measurement report to source eNB nodeMessage. Now, measurement report is the A3 event for triggering switching.

When source, eNB node receives after measurement report message, according to the content of measurement report message, sentencesCertainly meet the criterion of switching, therefore judgement is switched. Meanwhile, eNB node in source is also according to measuring reportAccuse the target cell information in message, determine target eNB node.

In switching preparation process, source eNB node sends handover request to target eNB node(HandoverRequest) message, target eNB node is carried out access control, is subscriber equipmentUE Resources allocation, and return to Handover Request Acknowledge (HandoverRequest to source eNB nodeACK) message, in this switching request acknowledgement message, comprises " RRCConnectionReconfiguration (wireless resource control connection reconfiguration) ".

Then, switch execution step in, source eNB node receive switching request acknowledgement message itAfter, by " the RRCConnection comprising in received switching request acknowledgement messageReconfiguration " send order subscriber equipment to user equipment (UE) as switching command messageUE switches. In addition, source eNB node is also to target eNB node forward downlink packet,And send status information. Target eNB node starts the packet that buffer memory is forwarded. Then, Yong HusheStandby UE, according to received new configuration, is synchronized to target eNB node. Target eNB node is to userEquipment UE provides downlink allocation and time advance information. User equipment (UE) sends " RRC againConnectionReconfigurationComplete (RRC connect reshuffled) " message arrivesTarget eNB node, to confirm switching.

Finally, in switching completing steps, target eNB node is sent out to Mobility Management Entity MMESend PathSwitchRequest (path handover request) message, to ask to carry out upper strata link switching.Then, Mobility Management Entity MME sends UserPlaneUpdate to gateway SGWRequest (user plane update request) message, gateway SGW changes down link data roadFootpath is to target eNB node, and (user plane upgrades to send UserPlaneUpdateResponseResponse) message is to Mobility Management Entity MME. Mobility Management Entity is replied PathSwitchRequestACK (path Handover Request Acknowledge) message is to target eNB node. Now, target eNBNode notification source eNB node discharges related resource, and user equipment (UE) is in the money of source eNB NodesSource.

In above-mentioned same frequency handoff procedure, switching delay can save to target eNB at source eNB nodePoint request is switched, target eNB node carries out access control and target eNB node returns to handover requestConfirm to produce in three steps about several milliseconds. Owing to there is longer switching delay, therefore, canCutting off rate during increase handover operation.

Between situation 2:eNB node, alien frequencies switches, but user equipment (UE) is without measurement clearance(MeasurementGAP is called for short MG) carries out different-frequency measure

So-called alien frequencies switching refers to the switching that Target cell is different from the operating frequency of cell-of-origin. Work as userWhen equipment UE has many antennas, when user equipment (UE) can be operated under multiple frequencies, enteringWhen row alien frequencies switches, subscriber equipment carries out different-frequency measure without measurement clearance. In this case, eNBBetween node between the eNB node of alien frequencies handoff procedure and situation 1 with handoff procedure is identical frequently.

Between situation 3:eNB node, alien frequencies switches, but that user equipment (UE) needs measurement clearance to carry out is differentFrequently measure

If user equipment (UE) only has individual antenna, user equipment (UE) can only be operated in singleUnder frequency,, in the time carrying out alien frequencies switching, user equipment (UE) needs measurement clearance to carry out alien frequenciesMeasure. Now, eNB node in source need to configure and activate measurement clearance for user equipment (UE).

Fig. 3 schematically shows in the existing connecting system that needs measurement clearance based on X2 interfaceENB node between alien frequencies switch process.

As shown in Figure 3, source eNB node, in the time of the measurement of configure user equipment UE, is being measured controlIn message, comprise common frequency measurement, different-frequency measure, about the A2 event for activating measurement clearance (canBe expressed as Event_A2_MG) configuration, (can be expressed as about the A3 event for triggering switchingEvent_A3) configuration etc. A2 event refers to that Serving cell quality is lower than the absolute thresholding of specifying.By the absolute thresholding in configuration A2 event and the appointed threshold in A3 event, can be used in activationThe A2 event of measurement clearance is sent out prior to the A3 event for triggering switching.

Then, user equipment (UE) is measured according to measuring control message, in the time meeting A2 event,Send measurement report to source eNB node: for activating the A2 event of measurement clearance. Source eNB nodeAccording to measurement report, activate measurement clearance, and send Radio Resource control reprovision to user equipment (UE)Put (RRCReConfig) message. In this message, notifying user equipment UE measurement clearance is swashedLive, add about the configuration of the A1 event for deexcitation measurement clearance and remove for activating surveyThe A2 event in amount gap.

When the measurement of carrying out when user equipment (UE) meets A3 event, it sends and surveys to source eNB nodeAmount report: for triggering the A3 event of switching. Then, source eNB node determination target eNB node,And jointly cooperate and carry out with target eNB node, user equipment (UE), Mobility Management Entity MMEBetween eNB node, alien frequencies switches. Between the eNB node in concrete handoff procedure and situation 1, switch with frequencyProcess is identical, repeats no more herein.

In this alien frequencies handoff procedure, need measurement clearance to carry out different-frequency measure, and between measuringDuring gap, user equipment (UE) can not be scheduled, thereby causes the handling capacity of system to reduce.

For switching in eNB node, also exist in eNB node with switching frequently, the interior nothing of eNB nodeNeed the alien frequencies of measurement clearance to switch and eNB node in need three kinds of situations of alien frequencies switching of measurement clearance,The concrete handoff procedure of these three kinds of situations is known for those of ordinary skill in the art.

In the situation that LTE GSM is applied to high ferro train, can adopt in whole high ferro(TrainBroadbandAccessSystem is called for short train deploy train broadband access systemTBAS) all terminal devices and in this TBAS are via train broadband access unit (TrainBroadbandAccessUnit, is called for short TBAU) formation of access LTE GSM. ?In this formation, access unit TBAU can be considered to the subscriber equipment of LTE GSM.If the handoff failure of access unit TBAU, all terminal devices in TBAS all will go offline,Therefore, the success rate of switching is very important for access unit TBAU. In addition, due to TBASIn all terminal devices all via access unit TBAU access LTE GSM, therefore,The handling capacity of access unit TBAU is also very heavy for the service quality (QoS) of guaranteeing terminal deviceWant.

But, in the technical scheme of switching between existing eNB node, exist switching delay long,Sometimes need the situation of measurement clearance, this all may cause access unit TBAU switch unsuccessful orHandling capacity declines.

Summary of the invention

The present invention proposes in view of above-mentioned technical problem just, its object be to provide a kind of forThe changing method of LET GSM and corresponding node, it can reduce switching delay, accuratelyGround is controlled and is switched and avoid measurement clearance, thereby strengthens the performance of switching between eNB node.

According to an aspect of the present invention, provide a kind of switching side for LTE GSMMethod, comprising: to user device configuration comprise with for trigger switch prepare measurement report and for touchSend out the measurement requirement that the relevant parameter of measurement report switched arranges; Receive from described subscriber equipmentSwitch for triggering the measurement report of preparing; According to received described survey of preparing for triggering switchingAmount report, judgement is switched; Obtain and comprise and switch relevant wireless resource control connection reconfigurationThe Handover Request Acknowledge of information; Store described wireless resource control connection reconfiguration information; Receive fromDescribed subscriber equipment for triggering the measurement report of switching; To described subscriber equipment send comprise depositThe switching command of the wireless resource control connection reconfiguration information of storage switches to start; And switching toAfter merit, discharge related resource.

According to another aspect of the present invention, provide a kind of joint using in LTE GSMPoint, comprising: measure and require configuration module, for comprise to user device configuration with for triggering switchingThe measurement requirement that the measurement report of the preparing parameter relevant with the measurement report for triggering switching arranges;Receiver module, for receiving the measurement report of preparing for triggering switching from described subscriber equipment,And receive from described subscriber equipment for triggering the measurement report of switching; Switch decision module,For according to the received described measurement report of preparing for triggering switching, adjudicate and switch; ObtainDelivery piece, comprises and the switching of switching relevant wireless resource control connection reconfiguration information for obtainingRequest is confirmed; Memory module, for storing described wireless resource control connection reconfiguration information; SendModule, comprises stored wireless resource control connection reconfiguration letter for sending to described subscriber equipmentThe switching command of breath switches to start; And resource release module, for after handover success, dischargeRelated resource.

Brief description of the drawings

Fig. 1 is the schematic diagram of the general framework of LTE GSM;

Fig. 2 is showing of the process switched between the eNB node based on X2 interface in existing connecting systemIntention;

Fig. 3 is between the existing interior eNB node based on X2 interface of connecting system that needs measurement clearanceThe schematic diagram of the process that alien frequencies switches;

Fig. 4 is the changing method for LTE GSM according to an embodiment of the inventionFlow chart;

Fig. 5 is the indicative flowchart of the obtaining step in changing method embodiment illustrated in fig. 4;

Fig. 6 is of LTE GSM that can apply changing method embodiment illustrated in fig. 4The schematic diagram of example;

Fig. 7 is the eNB using in LTE GSM according to an embodiment of the inventionThe schematic block diagram of node.

Detailed description of the invention

Believe by the detailed description to specific embodiments of the invention below in conjunction with accompanying drawing, of the present inventionAbove-mentioned and other objects, features and advantages will be more readily apparent from.

Fig. 4 shows the switching for LTE GSM according to an embodiment of the inventionThe flow chart of method. Below in conjunction with accompanying drawing, the present embodiment is described in detail.

In the present embodiment, LTE GSM adopts the framework shown in Fig. 1. The present embodimentChanging method is carried out at source eNB Nodes, and source eNB node refers to the eNB of current service subscriber equipmentNode.

As shown in Figure 4, in step S401, source eNB node is to user equipment (UE) allocating and measuringRequirement, this measurement requires to comprise and switches the measurement report prepared and for triggering switching for triggeringThe parameter setting that measurement report is relevant.

Switch the relevant parameter setting of measurement report of preparing and comprise in the present embodiment, with for triggeringBe provided for triggering that to switch the measurement report of preparing be A2 Event triggered, first of A2 event is setThresholding etc. The parameter setting relevant with measurement report for triggering switching comprises being provided for triggering cutsThe measurement report that changes preparation is A2 event or A3 Event triggered, the second thresholding of A2 event is setOr the thresholding of A3 event etc. By the first thresholding, the second thresholding and the A3 event of A2 event are setThresholding, can make to switch the measurement report of preparing than for triggering the measurement report of switching for triggeringAccuse first and send.

For in above-mentioned eNB node and eNB internodal with frequently switch and eNB node in andThe internodal alien frequencies without measurement clearance of eNB switches, and switches for triggering the measurement report quilt of preparingBeing set to is (can be expressed as " Event_A2_Prepare ") of A2 Event triggered, for triggeringThe measurement report switching is set to be (can be expressed as " Event_A3_HO ") of A3 Event triggered.For switching with the internodal alien frequencies that needs measurement clearance of eNB in above-mentioned eNB node, forTrigger and switch the measurement report of preparing and be all set to be A2 thing for the measurement report that triggers switching(can be expressed as " Event_A2_Prepare " and " Event_A2_HO ") that part triggers.

Then,, at step S405, source eNB node receives cutting for triggering from user equipment (UE)Change the measurement report of preparation. The measurement requirement that user equipment (UE) is receiving source eNB node and configuresAfter, require to measure according to measuring. In the time thering is the A2 event of the first thresholding and be satisfied, userEquipment UE sends for triggering and switches the measurement report of preparing to source eNB node, accurate to trigger switchingStandby process.

At step S410, source eNB node switches for triggering the measurement report of preparing according to receivedAccuse, judgement is switched. Particularly, source eNB node, according to the content of this measurement report, judges itMeet switching criterion, thereby judgement is switched. Meanwhile, eNB node in source will be determined subscriber equipmentThe Target cell that UE will be switched to.

At step S415, source eNB node obtains and switches relevant Radio Resource control connection reprovisionPut information. Referring to Fig. 5, at step S4151, according to target cell information, the judgement of source eNB nodeThis switching is to switch between the interior switching of eNB node or eNB node. Usually, if Target cellBelong to source eNB node, show that this switching is to switch in eNB node. If Target cell belongs toAnother eNB node, shows that this switching is to switch between eNB node, and under Target cellENB node becomes target eNB node. If it is in eNB node that source eNB node judges this switchingSwitch, at step S4152, source eNB node carries out the access control of Target cell, and is userEquipment UE Resources allocation, determines corresponding wireless resource control connection reconfiguration information. If source eNBNode judges that this switching is to switch between eNB node, and at step S4153, source eNB node is to targetThe request of eNB node is switched, and at step S4154, receives relevant with switching from this target eNB nodeWireless resource control connection reconfiguration information. In the present embodiment, at source eNB node to target eNBAfter node sends handover request message, target eNB node carries out the access control of Target cell, forUser equipment (UE) Resources allocation, builds corresponding wireless resource control connection reconfiguration information, and willIt is included in and in Handover Request Acknowledge, returns to source eNB node.

Then, at step S420, the Radio Resource control connection weight that source eNB node storage is obtainedConfiguration information, and directly do not send to user equipment (UE).

At above-mentioned steps S410, to during step 420, user equipment (UE) is proceeded to measure. Work as toolWhile having the A3 event of thresholding to be satisfied, or in the time thering is the A2 event of the second thresholding and be satisfied, useFamily equipment UE sends the measurement report for triggering switching to source eNB node.

At step S425, source eNB node receive from user equipment (UE) for triggering the survey of switchingAmount report, then, at step S430, source eNB node immediately to user equipment (UE) provide storeWireless resource control connection reconfiguration information with start switch. This step can be by by this Radio ResourceControl connection reconfiguration information is included in switching command sends realization to subscriber equipment. Then, whenWhen switching is the interior switching of eNB node, under the control of source eNB node, user equipment (UE) is switched toBelong to the Target cell of same eNB node. When switching is while switching between eNB node, userEquipment UE, source eNB node, target eNB node, Mobility Management Entity MME and service networkClose under the common cooperation of SGW, user equipment (UE) is switched to target eNB node from source eNB nodeTarget cell. After handover success, target eNB node sends resource to source eNB node and dischargesMessage. Finally, at step S435, the shared relevant money of source eNB node releasing user equipment UESource.

Can find out by above description, in the changing method of the present embodiment, be used for touching by useSend out and switch the measurement report of preparation and for triggering the measurement report of switching, can make Radio Resource controlSystem connects reconfiguration information and before being triggered for the measurement report that triggers switching, is stored in source eNB jointIn point, therefore, obtain the required time of wireless resource control connection reconfiguration information to be not comprised in and to cutChange in delay, thereby can greatly reduce switching delay. Further, Radio Resource control connection weightConfiguration information can provide immediately after source eNB node receives the measurement report for triggering switchingGive user equipment (UE), therefore, can control exactly switching. In addition, due to for eNB nodeThe internodal alien frequencies that needs measurement clearance of interior and eNB switches, and uses two A2 events to replace existingThe A3 event that needs measurement clearance in technology, therefore, the changing method of the present embodiment is without measurementGap, thus the handling capacity of system can not be affected. In addition, adopt the changing method of the present embodiment also canTo carry out easily the network optimization.

Fig. 6 is the LTE GSM that to apply changing method embodiment illustrated in fig. 4The schematic diagram of an example. Although only show in the drawings an EPC node, be not limited to this,LTE GSM can comprise multiple EPC nodes. As shown in Figure 6, this LTE mobile communicationSystem (being illustrated as LTE-HBS, LTE high-speed backbone system) is via access unit TBAU and TBASSystem connects, and the various terminal devices in TBAS system are all accessed by access unit TBAU like thisLTE GSM. In this case, access unit TBAU can be counted as LTE and movesThe user equipment (UE) of moving communication system. Along with travelling of train, access unit TBAU is from cell-of-origin(belonging to source eNB node) is switched to Target cell, and (belonging to same eNB node (is source eNBNode) or another eNB node (being target eNB node)).

Particularly, source eNB node receive from access unit TBAU for triggering switchingAfter the measurement report of preparing, according to the content of this measurement report, determine and meet switching criterion, and reallyCommunity sets the goal. In the time determining Target cell, although do not comprise neighbor cell in this measurement reportInformation, but due to the unidirectional of train driving, therefore, be easy to the travel direction according to train,Determine Target cell. In addition, if there are multiple overlapping covered Target cells that have, can,To set up in advance the neighbouring relations between the community of all eNB nodes, for example community 1 and community 3 areNeighbor cell, community 2 and the community 4 of community 2 is neighbor cells of community 3 etc. Then, according toThis neighbouring relations in conjunction with the travel direction of train, source eNB node can easily be determined Target cell.

Under same inventive concept, Fig. 7 shows according to an embodiment of the invention at LTEThe schematic block diagram of the eNB node using in GSM. For for simplicity, Fig. 7 instituteThe eNB node showing only shows and switches relevant module, and those of ordinary skill in the art should manageSeparate, eNB node also comprises other module. Below in conjunction with accompanying drawing, the eNB node of the present embodiment is enteredRow describe in detail, wherein, for the part that embodiment is identical above, suitably the description thereof will be omitted.

As shown in Figure 7, the eNB node 700 of the present embodiment comprises: measure and require configuration module 701,It comprises and switches the measurement report of preparing and cut for triggering for triggering to user equipment (UE) configurationThe measurement requirement that the relevant parameter of measurement report of changing arranges; Receiver module 702, its reception is used by oneselfThe measurement report of preparing for triggering switching of family equipment UE, and receive from user equipment (UE)For triggering the measurement report of switching; Switch decision module 703, for according to received forTrigger and switch the measurement report of preparing, judgement is switched; Acquisition module 704, for obtaining and cuttingChange relevant wireless resource control connection reconfiguration information; Memory module 705, obtains for storingWireless resource control connection reconfiguration information; Provide module 706, for carrying to user equipment (UE)Supply stored wireless resource control connection reconfiguration information to switch to start; And resource release module707, for after handover success, discharge related resource.

As previously mentioned, during the measurement that requires configuration module 701 to configure in measurement requires, with for touchThe relevant parameter setting of measurement report of sending out switching preparation comprises that being provided for triggering switches the measurement of preparingReport is A2 Event triggered, first thresholding of A2 event etc. is set, with the survey for triggering switchingThe relevant parameter setting of amount report comprises it being to be provided for triggering that to switch the measurement report of preparing be A2 thingThe thresholding of the second thresholding part or A3 Event triggered, that A2 event is set or A3 event etc. In addition,For in eNB node and in the internodal same switching frequently of eNB and eNB node and between eNB nodeThe alien frequencies without measurement clearance switch, measure require configuration module 701 will be used for triggering switch prepareMeasurement report to be set to be A2 Event triggered, be set to for the measurement report that triggers switchingIt is A3 Event triggered. For in eNB node and the internodal alien frequencies that needs measurement clearance of eNBSwitch, measure and require configuration module 701 by the measurement report for triggering switching preparation with for triggeringIt is A2 Event triggered that the measurement report switching is all set to.

When having received, measures after the measurement that requires the configuration module 701 to configure requires user equipment (UE),According to measuring the content requiring, measure. Meeting after the A2 event with the first thresholding,User equipment (UE) sends for triggering and switches the measurement report of preparing to the eNB node 700 of the present embodimentAccuse. Receiver module 702 receives the measurement report of preparing for triggering switching from user equipment (UE),And switch the measurement report prepared, judgement according to received for triggering by switch decision module 703Switch. In switch decision module 703, switch determining unit 7031 according to being used for triggering switchingThe measurement report of preparing, determines and meets switching criterion, switches, simultaneously Target cell thereby adjudicateDetermining unit 7032 is determined the Target cell that user equipment (UE) will be switched to. Work as user equipment (UE)While being the access unit TBAU in TBAS system, Target cell determining unit 7032 is according to trainTravel direction determine Target cell.

After switch decision module 703 judgement is switched, acquisition module 704 obtain with switch relevantWireless resource control connection reconfiguration information. Particularly, in acquisition module 704, first judgementUnit 7041, according to the information of the Target cell obtaining in switch decision module, judges that this switching isIn eNB node, switch still and switch between eNB node. As previously mentioned, judging unit 7041 can basisWhether Target cell belongs to this eNB node judges between the interior switching of eNB node or eNB nodeSwitch. If Target cell belongs to this eNB node, this switching is to switch in eNB node. AsFruit Target cell belongs to another eNB node that is not this eNB node, and this switching is eNB jointBetween point, switch, and the affiliated eNB node of Target cell is target eNB node. Then, switchingWhile being the interior switching of eNB node, determining unit 7042, by the access control of Target cell, is determined phaseThe wireless resource control connection reconfiguration information of answering. When switching is while switching between eNB node, switching pleaseAsk unit 7043 to switch to the request of target eNB node, target eNB node is receiving handover requestAfter, carry out the access control of Target cell, and build corresponding wireless resource control connection reconfiguration letterBreath, is then included in this wireless resource control connection reconfiguration information in Handover Request Acknowledge and returns,Received by receiver module 702. Then, memory module 705 is stored the nothing that acquisition module 704 obtainsLine resource control connection reconfiguration information.

When receiver module 702 receive from user equipment (UE) for triggering the measurement report of switchingTime, provide module 706 to provide stored wireless resource control connection reconfiguration to user equipment (UE)Information is switched to start. Usually, wireless resource control connection reconfiguration information is included in and switches lifeIn order, send to user equipment (UE). After handover success, resource release module 707 releasing users are establishedThe standby shared related resource of UE.

The eNB node 700 that it should be pointed out that the present embodiment can be realized Fig. 4 and Fig. 5 institute in operationThe changing method of the embodiment showing.

It should be pointed out that the eNB node of above-described embodiment and part thereof can be by such as ultra-largeIntegrated circuit or gate array, such as the semiconductor of logic chip, transistor etc. or can such as sceneThe hardware circuit of the programmable hardware device of programming gate array, programmable logic device etc. is realized, and also canTo use the software of being carried out by various types of processors to realize, also can be by above-mentioned hardware circuit and softwareCombination realize.

Although above by exemplary embodiment describe in detail of the present invention move for LTE logicalThe changing method of communication system and corresponding eNB node, but above these embodiment are not exhaustive,Those skilled in the art can realize variations and modifications within the spirit and scope of the present invention. Therefore,The present invention is not limited to these embodiment, and scope of the present invention is only defined by the appended claims.

Claims

1. a changing method of carrying out in the eNB of Long-Term Evolution GSM node,Comprise:

To user device configuration comprise with for trigger switch prepare measurement report and for triggering switchingThe measurement requirement that arranges of the relevant parameter of measurement report;

Receive the measurement report of preparing for triggering switching from described subscriber equipment;

According to the received described measurement report of preparing for triggering switching, judgement is switched, andDetermine the Target cell that described subscriber equipment will be switched to;

According to described Target cell, obtain the wireless resource control connection reconfiguration relevant with described switchingInformation;

Store described wireless resource control connection reconfiguration information;

Receive from described subscriber equipment for triggering the measurement report of switching;

Provide stored wireless resource control connection reconfiguration information to cut to start to described subscriber equipmentChange; And

After handover success, discharge related resource.

2. changing method according to claim 1, wherein, described in obtain with switch relevantThe step of wireless resource control connection reconfiguration information comprises:

According to target cell information, judge that described switching is to switch or eNB node in eNB nodeBetween switch;

If switch in eNB node, determine described wireless resource control connection reconfiguration information;

If switch between eNB node, switch to the request of target eNB node, and from described orderMark eNB node receives described wireless resource control connection reconfiguration information.

3. changing method according to claim 1 and 2, wherein, in eNB nodeSame frequency switches, eNB is internodal switches with switching frequently, the interior alien frequencies without measurement clearance of eNB nodeWith the alien frequencies without measurement clearance switches between eNB node, described for triggering the measurement report that switches preparationAnnouncement is set to be A2 Event triggered, is describedly set to be for the measurement report that triggers switchingA3 Event triggered.

4. changing method according to claim 1 and 2, wherein, for eNB node domestic demandWant measurement clearance alien frequencies switch and eNB node between need measurement clearance alien frequencies switch, described forTrigger and switch the measurement report of preparing and be describedly all set to be for the measurement report that triggers switchingA2 Event triggered.

5. changing method according to claim 1, wherein, described subscriber equipment is that train is wideWith the train broadband access unit in connecting system.

6. changing method according to claim 5, wherein, described according to described in receivedSwitch the measurement report of preparing and adjudicate the step of switching and comprise for triggering:

Switch for triggering the measurement report of preparing according to described, determine and meet switching criterion; And

According to the travel direction of train, determine the Target cell that described subscriber equipment will be switched to.

7. the eNB node using in Long-Term Evolution GSM, comprising:

Measurement requires configuration module, for comprise to user device configuration with for trigger switch prepareThe measurement requirement that measurement report arranges with the relevant parameter of measurement report for triggering switching;

Receiver module, for receiving the measurement report of preparing for triggering switching from described subscriber equipmentAccuse, and receive from described subscriber equipment for triggering the measurement report of switching;

Switch decision module, for describedly switching for triggering the measurement report of preparing according to received,Judgement is switched, and determines the Target cell that described subscriber equipment will be switched to;

Acquisition module, for according to described Target cell, obtains and switches relevant Radio Resource controlConnect reconfiguration information;

Memory module, for storing described wireless resource control connection reconfiguration information;

Provide module, for stored Radio Resource control connection reprovision is provided to described subscriber equipmentThe information of putting is switched to start; And

Resource release module, for after handover success, discharges related resource.

8. eNB node according to claim 7, wherein, described acquisition module comprises:

Judging unit, for according to target cell information, judges that described switching is to switch in eNB nodeOr switch between eNB node;

Determining unit, when switching in described switching is eNB node, determines described Radio ResourceControl connection reconfiguration information;

Handover request unit, for being while switching between eNB node in described switching, to target eNBNode request is switched;

Wherein, described receiver module is also for receiving described Radio Resource control from described target eNB nodeSystem connects reconfiguration information.

9. according to the eNB node described in claim 7 or 8, wherein, in eNB nodeSame frequency switches, eNB is internodal switches with switching frequently, the interior alien frequencies without measurement clearance of eNB nodeAnd switch without the alien frequencies of measurement clearance between eNB node, described measurement requires configuration module for by instituteState for triggering and switch the measurement report of preparing to be set to be A2 Event triggered, will be described for tactileSending out the measurement report switching, to be set to be A3 Event triggered.

10. according to the eNB node described in claim 7 or 8, wherein, for eNB node domestic demandWant the alien frequencies of measurement clearance to switch and the internodal alien frequencies switching that needs measurement clearance of eNB, described surveyAmount require configuration module for by described for trigger switch prepare measurement report and described for triggerIt is A2 Event triggered that the measurement report switching is all set to.

11. eNB nodes according to claim 7, wherein, described subscriber equipment is that train is wideWith the train broadband access unit in connecting system;

Described switch decision module comprises:

Switch determining unit, for switching for triggering the measurement report of preparing according to described, determine fullFoot switching criterion; And

Target cell determining unit, for according to the travel direction of train, determines that described subscriber equipment willThe Target cell being switched to.