CN102215538B - Measurement task collocation method in cell merge or process of reconstruction and system - Google Patents
Measurement task collocation method in cell merge or process of reconstruction and system Download PDFInfo
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Abstract
The invention discloses the measurement task collocation method in a kind of cell merge or process of reconstruction and system, the method comprises: target BS selects the first component carrier from the first component carrier set that UE uses in the serving cells, from the second component carrier set that UE will use Target cell, select the second component carrier wave identical with the first component carrier quantity, and set up the one-to-one relationship between the first component carrier and second component carrier wave; Target BS exchanges according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave, and user equipment (UE) obtains corresponding relation; UE exchanges according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave.Present invention achieves the consistency of the measurement task of target BS and UE side.
Description
Technical field
The present invention relates to the communications field, in particular to the measurement task collocation method in a kind of cell merge or process of reconstruction and system.
Background technology
Long Term Evolution (LongTermEvolution, referred to as LTE) wireless heterogeneous networks (RadioResourceControl, referred to as the RRC) layer of system has been mainly used in broadcast, paging, wireless heterogeneous networks connection management, radio bearer control, mobility functions, terminal survey report and control.In order to carry out wireless heterogeneous networks connection management, eNB needs to send descending RRC information by Physical Downlink Shared Channel (PhysicalDownlinkSharedChannel, referred to as PDSCH) to UE.In order to reduce PDSCH resource overhead, in LTE system, the transmission of descending RRC information takes the mode that increment signaling (deltasignaling) configures, that is, after UE receives RRC information, on the basis of original configuration information, according to increment signaling, partial configuration is increased, deletes, revised, can obtain complete new configuration, the configuration information that major part does not make an amendment can no longer send by eating dishes without rice or wine, thus has saved interface-free resources.
In LTE system, the process of switching as shown in Figure 1, comprises the following steps:
Step 1, source base station sends handover request order, carries the contextual information of UE at source base station in this order after determining to need to implement switching by switch decision;
Step 2, after target BS receives handover request order, sends to source base station by switching request response order by giving the configuration information of UE;
Step 3, after source base station receives switching request response order, sends to UE to the configuration information of UE by switching command by target BS;
Step 4, UE accesses target BS according to the configuration information in this order after receiving switching command, accesses transmission switching successfully and completes order to target BS.
The process that RRC rebuilds as shown in Figure 2, comprises the following steps:
Step 1, when UE determines that carrying out RRC rebuilds, sends RRC to serving BS and rebuilds request;
Step 2, after serving BS receives RRC reconstruction request, sends RRC to UE and rebuilds order;
Step 3, UE performs after RRC process of reconstruction completes and has rebuild message to base station response RRC;
Step 4, after RRC has rebuild, base station generally can perform a RRC reconstitution process again, and particularly, the order of RRC reprovision is initiated to UE in base station;
Step 5, UE performs after RRC reconstitution process completes and completes message to base station response RRC reprovision.
Under connected state, the detailed process of measurement comprises the following steps:
Step 1, Survey control message is sent to UE by network side, wherein, this Survey control message comprises other association attributeses measured mark, measuring object, report configuration and measure, and measures mark by measuring object with report that configuration association is got up the complete measurement task of formation one.Measuring object contains measuring object attribute (as carrier wave, Neighboring Cell List etc.), each carrier wave only can configure a measuring object, report configuration packet contains report configuration attribute (as event triggers or periodic report, the event definition (A1, A2...) triggered, reports number of times etc.).
Step 2, UE goes to perform measure and assessment according to the measuring object in Survey control message, report configuration, and reports network side according to measurement result generation measurement report.
In order to reduce the expense of switching and the rear RRC reprovision signaling of RRC reconstruction, UE is carrying out in alien frequencies switching or process of reconstruction, can carry out measuring task switching for measurement task: when Serving cell (switching or the community before rebuilding, be called source) to comprising Target cell (switching or the community after rebuilding in the measuring object of UE configuration, be called target side) carrier wave, as shown in Figure 3, UE by the measuring object of place, Serving cell carrier wave, report configuration, with the measuring object of place, Target cell carrier wave, can report that configuration exchanges; When not comprising the carrier wave of Target cell in the measuring object that Serving cell configures to UE, UE just deletes the measurement task identical with place, Serving cell, source frequency.As shown in Figure 3, concrete exchange process is as follows:
Cell-of-origin (namely, Serving cell in Fig. 3) place carrier wave has two measurement tasks, MID#0 (MO#0+RC#0), MID#1 (MO#0+RC#1), Target cell (i.e. Target cell in Fig. 3) place carrier wave has a measurement task, MID#2 (MO#1+RC#2).The process of carrying out exchanging is exactly, task MID#0 and MID#1 is measured by two of MO#0, configuration is to MO#1, namely new MID#0 (MO#1+RC#0), MID#1 (MO#1+RC#1), the measurement task MID#1 of MO#1 is configured to MO#0, namely new MID#2 (MO#0+RC#2).
Source base station carries the measurement task configuration information of UE at source base station to the handover request order of target BS, after target BS receives this handover request order, switch if this handover request is alien frequencies, so target BS can perform above-mentioned measurement task switching action, target BS configures new measurement task (being configured by the mode of increment signaling) based on the measurement task after exchange to UE afterwards, be included in switching request response order and be transmitted to UE by source base station, after UE receives switching command, first perform and measure task switching, then measurement mission bit stream new in the increment signaling that performance objective base station configures, such UE and the final measurement task of target BS just can be consistent, and be an increment signaling because target BS configures new measurement task to UE, interface-free resources can be saved.
In order to provide higher data rate to mobile subscriber, advanced long-term evolution system (LongTermEvolutionAdvance, be called for short LTE-A) propose carrier aggregation technology (CarrierAggregation, referred to as CA), by the component carrier (ComponentCarriers of two or more, referred to as CC) be aggregating, to provide larger broadband for the UE with respective capabilities, improve the peak rate of UE.There is the LTE-AUE of carrier aggregation capacity, can simultaneously transceiving data on multiple component carrier, the UE below related to except special instruction be all this type of UE.In lte-a system, UE to enter after connected state can simultaneously by multiple component carrier (as CC1, CC2) communicate with source base station, base station can be that UE specifies a main carrier (PrimaryComponentCarrier by explicit configuration or according to protocol conventions, referred to as PCC), UE needs monitoring system message on PCC, and other component carrier is called auxiliary carrier wave (SecondaryComponentCarrier, referred to as SCC).
Inventor finds, because carrier aggregation Serving cell and carrier aggregation abutting subdistrict all likely comprise multiple carrier wave, that is, the Target cell of Serving cell and switching or reconstruction all likely comprises multiple carrier wave, therefore, principle according to above-mentioned measurement task switching judges, the exchange corresponding relation between multiple carrier wave of Serving cell and multiple carrier waves of Target cell cannot be determined, it is uncertain that this can cause exchanging existence, correspondingly, may make target BS to measure measurement task that the configuration of task and UE understand configure between there are differences, thus cause measuring process chaotic, make base station side cannot obtain complete measurement result, UE side causes system resource waste owing to carrying out wrong measuring process.
The principle of the measurement task switching in correlation technique is only only applicable to single-carrier system, and for carrier aggregation system, the exchange corresponding relation between multiple carrier wave of Serving cell and multiple carrier waves of Target cell cannot be determined, this can cause exchanging exist uncertain, this may make target BS the measurement task that the configuration of the task of measurement and UE are understood is configured between there are differences.By the method that the embodiment of the present invention provides, make target BS that the carrier wave being used for exchanging selected is set up one-to-one relationship, the corresponding relation set up is obtained again by UE, follow-up UE carries out measurement task switching according to this corresponding relation, make UE can know exchange corresponding relation, thus make target BS to configure with the measurement task that UE understands reach consistent to measuring the configuration of task, and then make UE can carry out correct measurement to the measurement task of actual disposition.
Preferably, UE acquisition corresponding relation comprises: UE receives the corresponding relation from target BS by source base station.The instruction that this method carries out corresponding relation implements fairly simple, and can configure neatly and indicate corresponding relation.
Preferably, UE obtains corresponding relation and comprises: make an appointment between target BS and UE and set up the rule that corresponding relation adopts, UE sets up the one-to-one relationship between the first component carrier and second component carrier wave according to this rule.By this method, can effectively reduce for measuring the signaling of task configuration in switching or process of reconstruction, raising utilization rate of air interface resource, provides good business experience to user.
Preferably, the one-to-one relationship set up between the first component carrier and second component carrier wave comprises: arrange between the principal component carrier wave PCC in the first component carrier set and the PCC in second component carrier set and have one-to-one relationship.PCC in first component carrier set and the PCC in second component carrier set is set to and carries out measuring a pair of task switching with reference to carrier frequency, thereafter, target BS is configured amendment by increment configuration to the PCC in second component carrier set again, due to general more similar to the measurement configuration of PCC, therefore, index word is less, can reduce signaling consumption to large extent, improves utilization rate of air interface resource.
Preferably, after the measurement task of to be the measurement task of the first component carrier and the frequency of measuring object according to corresponding relation to the frequency of measuring object be second component carrier wave exchanges, also comprise: according to the configuration of the measurement task after the exchange of the PCC in the first component carrier set, the measurement task that the frequency of measuring object is other component carriers (it is SCC) in the first component carrier set except the first component carrier is configured.In the method, because the measurement configuration of SCC with PCC in same component carrier set is more similar, therefore, according to the configuration of the PCC in the first component carrier set, the component carrier do not set up in the first component carrier set of corresponding relation is configured, subsequent target base station is modified by increment configuration again, signaling consumption can be reduced to large extent, improve utilization rate of air interface resource.
Preferably, after the measurement task of to be the measurement task of the first component carrier and the frequency of measuring object according to corresponding relation to the frequency of measuring object be second component carrier wave exchanges, also comprise: according to the configuration of the measurement task after the exchange of the PCC in second component carrier set, the measurement task that the frequency of measuring object is other component carriers (it is SCC) in second component carrier set except second component carrier wave is configured.In the method, because the measurement configuration of SCC with PCC in same component carrier set is more similar, therefore, according to the configuration of the PCC in second component carrier set, the component carrier do not set up in the second component carrier set of corresponding relation is configured, subsequent target base station is modified by increment configuration again, signaling consumption can be reduced to large extent, improve utilization rate of air interface resource.
Preferably, the one-to-one relationship set up between the first component carrier and second component carrier wave comprises: setting has between the first component carrier of same frequency and second component carrier wave and has one-to-one relationship.Frequency for measuring object is that identical measurement task does not need to do any process, namely the measurement task that the frequency of UE continuation reservation measuring object is identical, increment configuration is carried out according to this measurement task in base station, can effectively reduce in switching or process of reconstruction for measuring the signaling of task configuration, improve utilization rate of air interface resource, provide good business experience to user.
Preferably, after setting has and has one-to-one relationship between the first component carrier of same frequency and second component carrier wave, also comprise: for first component carrier and second component carrier wave with different frequency set up one-to-one relationship according to the order preset.
Preferably, after the measurement task of to be the measurement task of the first component carrier and the frequency of measuring object according to corresponding relation to the frequency of measuring object be second component carrier wave exchanges, also comprise: from the measurement task of the frequency of measuring object to be the frequency of deleting measuring object in the measurement task of carrier wave the first component carrier set be other component carriers in the first component carrier set except the first component carrier.Delete the measurement task not setting up the component carrier of corresponding relation in the first component carrier set, resource shared when UE carries out measurement task can be reduced, improve the processing speed of UE.
Preferably, after the measurement task of to be the measurement task of the first component carrier and the frequency of measuring object according to corresponding relation to the frequency of measuring object be second component carrier wave exchanges, also comprise: the measurement task that the frequency of measuring object is other component carriers in second component carrier set except second component carrier wave is configured.Measurement task for the component carrier not setting up corresponding relation in second component carrier set carries out measurement configuration, makes target BS can obtain complete measurement result, is conducive to the correct judgement switching or rebuild.
Preferably, quantity N=min (a of the first component carrier and second component carrier wave, b), wherein, a is the quantity of the component carrier comprised in the first component carrier set, b is the quantity of the component carrier comprised in second component carrier set, and min (a, b) gets the smaller value in a and b.The method can carry out measurement task switching as much as possible, thus reduces to eat dishes without rice or wine the expense of side on to greatest extent, improves the utilance of side of eating dishes without rice or wine, provides good business experience to user.
The embodiment of the present invention additionally provides the measurement task configuration-system in a kind of cell merge or process of reconstruction, comprise target BS 51 and UE52, wherein, target BS 51 comprises: select module 53, select the first component carrier in the first component carrier set of using in Serving cell from UE, from the second component carrier set that UE will use Target cell, select the second component carrier wave identical with the first component carrier quantity; Relation sets up module 54, for setting up the one-to-one relationship between the first component carrier and second component carrier wave; First Switching Module 55, for exchanging according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave; UE52 comprises: acquisition module 56, for obtaining above-mentioned corresponding relation; Second Switching Module 57, for exchanging according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave.
The principle of the measurement task switching in correlation technique is only only applicable to single-carrier system, and for carrier aggregation system, the exchange corresponding relation between multiple carrier wave of Serving cell and multiple carrier waves of Target cell cannot be determined, this can cause exchanging exist uncertain, this may make target BS 51 the measurement task that the configuration of the task of measurement and UE52 are understood is configured between there are differences.In the system that the embodiment of the present invention provides, set up module 54 by relation and the carrier wave being used for exchanging selected is set up one-to-one relationship, follow-up UE52 obtains corresponding relation by acquisition module 56, second Switching Module 57 of UE52 carries out measurement task switching according to this corresponding relation, make UE52 can know exchange corresponding relation, thus make target BS 51 to configure with the measurement task that UE52 understands reach consistent to measuring the configuration of task, and then make UE52 can carry out correct measurement to the measurement task of actual disposition.
Preferably, as shown in Figure 5, the acquisition module 56 in UE52 is sent to source base station for receiving target base station 51, and is forwarded to the corresponding relation of this UE52 by source base station 58.Or as shown in figure 15, this acquisition module 56 is for setting up the one-to-one relationship between the first component carrier and second component carrier wave according to the rule setting up corresponding relation of making an appointment between UE52 and target BS 51.
Embodiment 1-5 described below, combines the technical scheme of above-mentioned multiple preferred embodiment.Wherein, what embodiment 2 described is alien frequencies process of reconstruction, and what other embodiments described is alien frequencies handoff procedure.What embodiment 5 described is that LTE-AUE is switched to the processing procedure of LTE system from lte-a system.
The principle of the measurement task switching of correlation technique is only only applicable to single-carrier system, and for carrier aggregation system, the exchange corresponding relation between multiple carrier wave of Serving cell and multiple carrier waves of Target cell cannot be determined, this can cause exchanging exist uncertain, this may make target BS the measurement task that the configuration of the task of measurement and UE are understood is configured between there are differences.By the method that the embodiment of the present invention provides, making target BS is again UE allocating and measuring task, and this measurement task is sent to UE by source base station, after UE receives this measurement task, the configuration of target BS to the task of measurement is made to reach consistent with the configuration of UE to the task of measurement by being updated to the measurement task received when pre-test task, and then make UE can carry out correct measurement to the measurement task of actual disposition, and the method makes the process of UE and base station all simplify.
Preferably, the process of above-mentioned deletion measurement task can be: the MID deleting measurement task.
Figure 14 is the structured flowchart according to the measurement task configuration-system in the another kind of cell merge of the embodiment of the present invention or process of reconstruction, this system comprises target BS 1401, source base station 1402 and UE1403, wherein, target BS 1401 comprises: the first removing module 1404, for deleting the measurement task that the frequency of measuring object is the component carrier that the measurement task of the component carrier that UE1403 uses in the serving cells and the frequency of measuring object will use in Target cell for UE; First configuration module 1405, for being UE1403 allocating and measuring task; Sending module 1406, for sending the measurement task of configuration to UE1403; UE1403 comprises: the second removing module 1407, for deleting the measurement task that the frequency of measuring object is the component carrier that the measurement task of the component carrier that UE uses in the serving cells and the frequency of measuring object will use in Target cell for UE; Second configuration module 1408, for accepting the measurement task of above-mentioned configuration.
Preferably, as shown in figure 14, the sending module 1406 of target BS 1401 sends the measurement task of configuration to source base station 1402, then by source base station 1402, the measurement task of this configuration is transmitted to UE1403.
Summary of the invention
Main purpose of the present invention is to provide the measurement task collocation method in a kind of cell merge or process of reconstruction and system, at least to solve the problem.
According to an aspect of the present invention, provide the measurement task collocation method in a kind of cell merge or process of reconstruction, comprise the following steps: target BS selects the first component carrier from the first component carrier set that UE uses in the serving cells, from the second component carrier set that UE will use Target cell, select the second component carrier wave identical with the first component carrier quantity, and set up the one-to-one relationship between the first component carrier and second component carrier wave; Target BS exchanges according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave, and user equipment (UE) obtains corresponding relation; UE exchanges according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave.
According to another aspect of the present invention, provide the measurement task collocation method in a kind of cell merge or process of reconstruction, comprise the following steps: the frequency of target BS deletion measuring object is the measurement task of the component carrier that the measurement task of the component carrier that UE uses in the serving cells and the frequency of measuring object will use for UE in Target cell; Target BS is UE allocating and measuring task, and sends the measurement task of configuration to UE; The frequency of UE deletion measuring object is the measurement task of the component carrier that the measurement task of the component carrier that UE uses in the serving cells and the frequency of measuring object will use in Target cell for UE, and accepts the measurement task of configuration.
According to a further aspect of the invention, provide the measurement task configuration-system in a kind of cell merge or process of reconstruction, comprise target BS and UE, wherein, target BS comprises: select module, select the first component carrier in the first component carrier set of using in Serving cell from UE, the second component carrier set that will use in Target cell from UE, select the second component carrier wave identical with the first component carrier quantity; Relation sets up module, for setting up the one-to-one relationship between the first component carrier and second component carrier wave; First Switching Module, for exchanging according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave; UE comprises: acquisition module, for obtaining corresponding relation; Second Switching Module, for exchanging according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave.
According to a further aspect of the invention, provide the measurement task configuration-system in a kind of cell merge or process of reconstruction, comprise target BS, source base station and UE, wherein, target BS comprises: the first removing module, for deleting the measurement task that the frequency of measuring object is the component carrier that the measurement task of the component carrier that UE uses in the serving cells and the frequency of measuring object will use in Target cell for UE; First configuration module, for being UE allocating and measuring task; Sending module, for sending the measurement task of configuration to UE; UE comprises: the second removing module, for deleting the measurement task that the frequency of measuring object is the component carrier that the measurement task of the component carrier that UE uses in the serving cells and the frequency of measuring object will use in Target cell for UE; Second configuration module, for accepting the measurement task configured.
Pass through the present invention, adopt target BS that the carrier wave being used for exchanging selected is set up one-to-one relationship, UE obtains this corresponding relation, follow-up UE carries out measurement task switching according to this corresponding relation, the problem that the uncertainty solving the principle measuring task switching in correlation technique in carrier aggregation causes the measurement task of target BS and UE side inconsistent, in carrier aggregation system, achieve the consistency of the measurement task of target BS and UE side.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the detail flowchart of handoff procedure in LTE system;
Fig. 2 is the detail flowchart of RRC process of reconstruction in LTE system;
Fig. 3 is the schematic diagram measuring task switching process in LTE system;
Fig. 4 is the flow chart according to the measurement task collocation method in a kind of cell merge of the embodiment of the present invention or process of reconstruction;
Fig. 5 is the preferred structure block diagram one according to the measurement task configuration-system in a kind of cell merge of the embodiment of the present invention or process of reconstruction;
Fig. 6 is the schematic diagram of the carrier aggregation according to the embodiment of the present invention 1;
Fig. 7 is the schematic diagram of the measurement task switching according to the embodiment of the present invention 1;
Fig. 8 is the schematic diagram of the carrier aggregation according to the embodiment of the present invention 2 and embodiment 6;
Fig. 9 is the schematic diagram of the measurement task switching according to the embodiment of the present invention 2 and embodiment 6;
Figure 10 is the schematic diagram of the carrier aggregation according to the embodiment of the present invention 3;
Figure 11 is the schematic diagram of the carrier aggregation according to the embodiment of the present invention 4;
Figure 12 is the schematic diagram of the carrier aggregation according to the embodiment of the present invention 5;
Figure 13 is the flow chart according to the measurement task collocation method in the another kind of cell merge of the embodiment of the present invention or process of reconstruction;
Figure 14 is the structured flowchart according to the measurement task configuration-system in the another kind of cell merge of the embodiment of the present invention or process of reconstruction; And
Figure 15 is the preferred structure block diagram two according to the measurement task configuration-system in a kind of cell merge of the embodiment of the present invention or process of reconstruction.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Identical with the carrier wave of target side for being defined as source with switching frequently in carrier aggregation, namely the quantity of carrier wave is consistent, and respective frequency is consistent, and in other lte-a system, switching is all called that alien frequencies switches.Secondly, illustrating in order to unified, for switching, is be switched to target side by source, and for reconstruction, then think before rebuilding to be source, after reconstruction be target side, and therefore alien frequencies reconstruction is consistent with the definition of the source that alien frequencies switches and target side.
Fig. 4 is the flow chart according to the measurement task collocation method in a kind of cell merge of the embodiment of the present invention or process of reconstruction, and the method comprises the following steps:
Step S402, target BS selects the first component carrier from the first component carrier set that UE uses in the serving cells, from the second component carrier set that UE will use Target cell, select the second component carrier wave identical with the first component carrier quantity, and set up the one-to-one relationship between the first component carrier and second component carrier wave;
Step S404, target BS exchanges according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave, and UE obtains above-mentioned corresponding relation;
Step S406, UE exchange according to the measurement task of corresponding relation to the frequency of measuring object to be the measurement task of the first component carrier and the frequency of measuring object be second component carrier wave.
Embodiment 1
As shown in Figure 6, UE resides on CC1, and on CC1, initiate RRC connection establishment, and after RRC connection establishment process completes, UE access carrier aggregation cell 1 enters connected state, and CC1 is PCC.Due to the needs of business, network side is configured with CC2 to UE and carries out carrier aggregation, and the component carrier that therefore current UE uses simultaneously is CC1, CC2 (i.e. S-CC1 and S-CC2), and CC1 is PCC, CC2 is SCC.Wherein measure the content of task before exchange as shown in Fig. 7 (a).
When UE moves to carrier aggregation subdistrict 2, source base station makes the judgement switched to target BS, UE is switched in carrier aggregation subdistrict 2, only uses CC1 (i.e. T-CC1).Source base station, in the handover request message sending to target BS, contains the measurement task of UE at source base station, can also comprise the carrier information (if S-CC1 and S-CC2, CC1 are PCC etc.) of the current use of UE.
After target BS receives the handover request message of source base station, judge this time to switch and belong to alien frequencies switching, wherein S-CC1 and T-CC1 is identical frequency, therefore be that the measurement task of CC1 all retains by measuring object, the measurement task of S-CC2 is all deleted (namely deleting MID#4-7), and the measurement task of other CC4 also retains.Target BS performs the result after measuring task switching as shown in Fig. 7 (b).
Target BS is according to the result of Fig. 7 (b), and to the increment signaling of UE allocating and measuring task, as increased a MID#4 (the alien frequencies A3 event on CC2), final measurement task result is as shown in Fig. 7 (c).Send to source base station by handover request ack message, and comprise the information of S-CC1 and T-CC1 pairing, after source base station receives, send to UE by switching command.
After UE receives switching command, the measurement task of CC1 retained, delete the measurement task (namely deleting MID#4-7) of CC2, the measurement task of CC4 also retains, then perform the measurement task configuration in increment signaling, the result of final measurement task is consistent with Fig. 7 (c).
Embodiment 2
As shown in Figure 8, UE resides on CC1, and on CC1, initiate RRC connection establishment, and after RRC connection establishment process completes, UE access carrier aggregation cell 1 enters connected state, and CC1 is PCC.Due to the needs of business, network side is configured with CC2 to UE and carries out carrier aggregation, and the component carrier that therefore current UE uses simultaneously is CC1, CC2 (i.e. S-CC1 and S-CC2), and CC1 is PCC, CC2 is SCC.The content of measurement task before exchange is as shown in Fig. 9 (a).
When UE, in carrier aggregation subdistrict 1, RLF occurs, need to initiate RRC and rebuild.First UE carries out community selection, and UE have selected the carrier aggregation subdistrict 2 on CC3, only uses CC3 (i.e. T-CC3), and carrier aggregation subdistrict 2 and carrier aggregation subdistrict 1 are the communities of same base.
After target side joint receives the RRC reconstruction request message of UE, judge this time to switch and belong to alien frequencies reconstruction, S-CC1 and T-CC3 is matched, the measurement tasks carrying of to be CC1 and measuring object by measuring object be CC3 exchanges, the measurement task of S-CC2 is all deleted (namely deleting MID#4-6), and the measurement task of other CC4 also retains.Target side performs the result after measuring task switching as shown in Fig. 9 (b).
Target side is according to the result of Fig. 9 (b), to the increment signaling of UE allocating and measuring task, increase MID#4 (the same frequency A3 event on CC2), MID#5 (the A4 event on CC2), final measurement task result is as shown in Fig. 9 (c).UE is sent by RRC reallocation message, and comprise the information of S-CC1 and T-CC3 pairing, after UE receives, by the measurement task switching of CC1 and CC3, delete the measurement task (namely deleting MID#4-6) of CC2, the measurement task of CC4 also retains, and then perform the measurement task configuration in increment signaling, the result of final measurement task is consistent with Fig. 9 (c).
For the measurement task of CC2, can adopt with exchange after the consistent configuration of the measurement task of CC1, task is measured to the configuration of the increment of UE sending measuring task according to this again in target side, can save signaling consumption larger.
Embodiment 3
As shown in Figure 10, UE resides on CC1, and on CC1, initiate RRC connection establishment, and after RRC connection establishment process completes, UE access carrier aggregation cell 1 enters connected state, and CC1 is PCC.Due to the needs of business, network side is configured with CC2 to UE and carries out carrier aggregation, and the component carrier that therefore current UE uses simultaneously is CC1, CC2 (i.e. S-CC1 and S-CC2), and CC1 is PCC, CC2 is SCC.
When UE moves to carrier aggregation subdistrict 2, source base station makes the judgement switched to target BS, and UE is switched in carrier aggregation subdistrict 2, uses CC2 and CC3 (i.e. T-CC2 and T-CC3).Source base station, in the handover request message sending to target BS, contains the measurement task of UE at source base station, can also comprise the carrier information (if S-CC1 and S-CC2, CC1 are PCC etc.) of the current use of UE.
After target BS receives the handover request message of source base station, judge this time to switch and belong to alien frequencies switching, wherein S-CC2 and T-CC2 is identical frequency, therefore be that the measurement task of CC2 all retains by measuring object, the measurement task of S-CC1 and T-CC3 carries out exchanging (can reference diagram 7), and the measurement task of other CC4 also retains.
Target BS according to above-mentioned to measuring the result of task, to the increment signaling of UE allocating and measuring task.Send to source base station by handover request ack message, and comprise S-CC2 and T-CC2, the information of the pairing of S-CC1 and T-CC3, after source base station receives, send to UE by switching command.
After UE receives switching command, the measurement task of CC2 retained, the measurement task switching of CC1 and CC3, the measurement task of CC4 also retains, and then performs the measurement task configuration in increment signaling, obtains the configuration of final measurement task.
Embodiment 4
As shown in figure 11, UE resides on CC1, and on CC1, initiate RRC connection establishment, and after RRC connection establishment process completes, UE access carrier aggregation cell 1 enters connected state, and CC1 is PCC.Due to the needs of business, network side is configured with CC2 to UE and carries out carrier aggregation, and the component carrier that therefore current UE uses simultaneously is CC1, CC2 (i.e. S-CC1 and S-CC2), and CC1 is PCC, CC2 is SCC.
When UE moves to carrier aggregation subdistrict 2, source base station makes the judgement switched to target BS, and UE is switched in carrier aggregation subdistrict 2, uses CC3, CC4 and CC5 (i.e. T-CC3, T-CC4 and T-CC5), and indicates T-CC3 to be PCC.Source base station, in the handover request message sending to target BS, contains the measurement task of UE at source base station, can also comprise the carrier information (if S-CC1 and S-CC2, CC1 are PCC etc.) of the current use of UE.
After target BS receives the handover request message of source base station, judge this time to switch and belong to alien frequencies switching, determine S-PCC (i.e. S-CC1) and T-PCC (i.e. T-CC3) to match (i.e. the measurement task switching of CC1 and CC3) (can reference diagram 9), S-CC2 and T-CC4 matches (i.e. the measurement task switching of CC2 and CC4).
Target BS according to above-mentioned to measuring the result of task, to the increment signaling of UE allocating and measuring task (as increased the measurement task configuration of CC5).Send to source base station by handover request ack message, and comprise S-PCC and T-PCC (can clearly indicate, also can agreement regulation), the information of the pairing of S-CC2 and T-CC4, after source base station receives, sends to UE by switching command.
After UE receives switching command, by the measurement task switching of CC1 and CC3, the measurement task switching of CC2 and CC4, then performs the measurement task configuration in increment signaling, obtains the configuration of final measurement task.
The measurement task configuration of CC3 after the measurement task configuration of CC5 also first can adopt and exchange, target BS configures the increment configuration issuing CC5 to UE according to the measurement task of CC3, can save space interface signaling larger.
Embodiment 5
As shown in figure 12, UE resides on CC1, and on CC1, initiate RRC connection establishment, and after RRC connection establishment process completes, UE access carrier aggregation cell 1 enters connected state, and CC1 is PCC.Due to the needs of business, network side is configured with CC2 to UE and carries out carrier aggregation, and the component carrier that therefore current UE uses simultaneously is CC1, CC2 (i.e. S-CC1 and S-CC2), and CC1 is PCC, CC2 is SCC.Carrier aggregation subdistrict 1 belongs to base station 1, is the base station of LTE-A.
When UE moves to LTE community 2, LTE community 2 belongs to base station 2, is the base station of LTE.Source base station makes the judgement switched to target BS, and UE is switched in LTE community 2, uses CC3 (i.e. T-CC3).Because target BS is LTE system, only support a carrier wave, and be the principle adopting LTE system for the exchange of the task of measurement.Therefore, source base station is while sending handover request message to target BS, and deleted by SCC (i.e. CC2), so, UE only uses carrier wave, i.e. a CC1.Now, source base station is sent in handover request message to target BS, contains the measurement task of UE at source base station, can also comprise the carrier information (as S-CC1) of the current use of UE.
After target BS receives the handover request message of source base station, judge that this time switching belongs to alien frequencies and switches, directly by the measurement task switching of CC1 and CC3, the measurement task of other CC4 retains.
Target BS according to the result of above-mentioned measurement task switching, to the increment signaling of UE allocating and measuring task.Send to source base station by handover request ack message, after source base station receives, send to UE by switching command.
After UE receives switching command, by the measurement task switching of CC1 and CC3, the measurement task of CC4 also retains, and then performs the measurement task configuration in increment signaling, obtains final measurement task configuration.
Figure 13 is the flow chart according to the measurement task collocation method in the another kind of cell merge of the embodiment of the present invention or process of reconstruction, comprises the following steps:
Step S1302, the frequency of target BS deletion measuring object is the measurement task of the component carrier that the measurement task of the component carrier that UE uses in Serving cell and the frequency of measuring object will use in Target cell for UE;
Step S1304, target BS is UE allocating and measuring task, and sends the measurement task of configuration to UE;
The frequency of step S1306, UE deletion measuring object is the measurement task of the component carrier that the measurement task of the component carrier that UE uses in Serving cell and the frequency of measuring object will use in Target cell for UE, and accepts the measurement task of this configuration.
Embodiment 6
Still be described for Fig. 8, UE resides on CC1, and on CC1, initiate RRC connection establishment, and after RRC connection establishment process completes, UE access carrier aggregation cell 1 enters connected state, and CC1 is PCC.Due to the needs of business, network side is configured with CC2 to UE and carries out carrier aggregation, and the component carrier that therefore current UE uses simultaneously is CC1, CC2 (i.e. S-CC1 and S-CC2), and CC1 is PCC, CC2 is SCC.The content of measurement task is as shown in Fig. 9 (a).
When UE moves to carrier aggregation subdistrict 2, source base station makes the judgement switched to target BS, UE is switched in carrier aggregation subdistrict 2, only uses CC3 (i.e. T-CC3).Source base station, in the handover request message sending to target BS, contains the measurement task of UE at source base station, can also comprise the carrier information (if S-CC1 and S-CC2, CC1 are PCC etc.) of the current use of UE.
After target BS receives the handover request message of source base station, judge that this time switching belongs to alien frequencies and switches, the measurement task of CC1, CC2 and CC3 all deleted (namely deleting MID#1-8), the measurement task (i.e. MID#9) of other CC4 retains.
Target BS is to the complete configuration signaling of UE allocating and measuring task, and the measurement as MID#1-8 in Fig. 9 (c) configures.Send to source base station by handover request ack message, after source base station receives, send to UE by switching command.
After UE receives switching command, the measurement task of CC1, CC2, CC3 is all deleted (namely deleting MID#1-8), the measurement task of CC4 retains, and the complete configuration of the measurement task then in the signaling of performance objective base station, the result of final measurement task is consistent with Fig. 9 (c).
In sum, the scheme that the embodiment of the present invention provides makes target BS to configure with the measurement task that UE understands reach consistent to measuring the configuration of task, and then makes UE can carry out correct measurement to the measurement task of actual disposition.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the measurement task collocation method in cell merge or process of reconstruction, is characterized in that, comprise the following steps:
Target BS selects the first component carrier from the first component carrier set that UE uses in the serving cells, from the second component carrier set that UE will use Target cell, select the second component carrier wave identical with described first component carrier quantity, and set up the one-to-one relationship between described first component carrier and described second component carrier wave;
Described target BS exchanges according to the measurement task of described corresponding relation to the frequency of measuring object to be the measurement task of described first component carrier and the frequency of measuring object be described second component carrier wave, and user equipment (UE) obtains described corresponding relation;
Described UE exchanges according to the measurement task of described corresponding relation to the frequency of measuring object to be the measurement task of described first component carrier and the frequency of measuring object be described second component carrier wave;
Wherein, the one-to-one relationship set up between described first component carrier and described second component carrier wave comprises:
Arrange between the principal component carrier wave PCC in described first component carrier set and the PCC in described second component carrier set and there is one-to-one relationship; Or,
Arrange to have between described first component carrier of same frequency and described second component carrier wave and there is one-to-one relationship.
2. method according to claim 1, is characterized in that, UE obtains described corresponding relation and comprises: described UE receives the described corresponding relation from described target BS by source base station.
3. method according to claim 1, it is characterized in that, UE obtains described corresponding relation and comprises: make an appointment between described target BS and described UE and set up the rule that described corresponding relation adopts, described UE sets up the one-to-one relationship between described first component carrier and described second component carrier wave according to described rule.
4. method according to claim 1, it is characterized in that, after the measurement task of to be the measurement task of described first component carrier and the frequency of measuring object according to described corresponding relation to the frequency of measuring object be described second component carrier wave exchanges, also comprise:
According to the configuration of the measurement task after the exchange of the PCC in described first component carrier set, the measurement task that the frequency of measuring object is other component carriers in the first component carrier set except described first component carrier is configured.
5. method according to claim 1, it is characterized in that, after the measurement task of to be the measurement task of described first component carrier and the frequency of measuring object according to described corresponding relation to the frequency of measuring object be described second component carrier wave exchanges, also comprise:
According to the configuration of the measurement task after the exchange of the PCC in described second component carrier set, the measurement task that the frequency of measuring object is other component carriers in second component carrier set except described second component carrier wave is configured.
6. method according to claim 1, is characterized in that, after setting has and has one-to-one relationship between described first component carrier of same frequency and described second component carrier wave, also comprises:
For described first component carrier and described second component carrier wave with different frequency set up one-to-one relationship according to the order preset.
7. method according to claim 1, it is characterized in that, after the measurement task of to be the measurement task of described first component carrier and the frequency of measuring object according to described corresponding relation to the frequency of measuring object be described second component carrier wave exchanges, also comprise:
From the measurement task of the frequency of measuring object to be the frequency of deleting measuring object in the measurement task of carrier wave described first component carrier set be other component carriers in described first component carrier set except described first component carrier.
8. method according to claim 1, it is characterized in that, after the measurement task of to be the measurement task of described first component carrier and the frequency of measuring object according to described corresponding relation to the frequency of measuring object be described second component carrier wave exchanges, also comprise:
The measurement task that the frequency of measuring object is other component carriers in described second component carrier set except described second component carrier wave is configured.
9. method according to claim 1, it is characterized in that, quantity N=min (a of described first component carrier and described second component carrier wave, b), wherein, a is the quantity of the component carrier comprised in described first component carrier set, and b is the quantity of the component carrier comprised in described second component carrier set, min (a, b) gets the smaller value in a and b.
10. the measurement task configuration-system in cell merge or process of reconstruction, comprises target BS and UE, it is characterized in that,
Described target BS comprises:
Select module, select the first component carrier in the first component carrier set of using in Serving cell from described UE, the second component carrier set that will use in Target cell from described UE, select the second component carrier wave identical with described first component carrier quantity;
Relation sets up module, for setting up the one-to-one relationship between described first component carrier and described second component carrier wave; Wherein, the one-to-one relationship set up between described first component carrier and described second component carrier wave comprises: arrange between the principal component carrier wave PCC in described first component carrier set and the PCC in described second component carrier set and have one-to-one relationship; Or setting has between described first component carrier of same frequency and described second component carrier wave and has one-to-one relationship;
First Switching Module, for exchanging according to the measurement task of described corresponding relation to the frequency of measuring object to be the measurement task of described first component carrier and the frequency of measuring object be described second component carrier wave;
Described UE comprises:
Acquisition module, for obtaining described corresponding relation;
Second Switching Module, for exchanging according to the measurement task of described corresponding relation to the frequency of measuring object to be the measurement task of described first component carrier and the frequency of measuring object be described second component carrier wave.
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