CN102215538A - Method and system for configuring measuring tasks in process of switching or reconstructing cell - Google Patents

Method and system for configuring measuring tasks in process of switching or reconstructing cell Download PDF

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CN102215538A
CN102215538A CN2010101612115A CN201010161211A CN102215538A CN 102215538 A CN102215538 A CN 102215538A CN 2010101612115 A CN2010101612115 A CN 2010101612115A CN 201010161211 A CN201010161211 A CN 201010161211A CN 102215538 A CN102215538 A CN 102215538A
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component carrier
measurement task
frequency
measuring object
target
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CN102215538B (en
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陈中明
黄亚达
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a method and system for configuring measuring tasks in the process of switching or reconstructing a cell. The method comprises the following steps: a target base station selects first component carriers from a first component carrier set used by UE (User Equipment) in a service cell, selects second components carriers with the same number with the first component carriers from a second component carrier set used by the UE in a target cell, and establishes a corresponding relation between the first component carriers and the second components carriers; the target base station carries out exchange on a measuring task of which the frequency of a measured object is equal to the first component carrier and a measuring task of which the frequency of a measuring object is equal to the second component carrier according to the corresponding relation, and the UE obtains the corresponding relation; and the UE carries out exchange on the measuring task of which the frequency of the measured object is equal to the first component carrier and the measuring task of which the frequency of the measuring object is equal to the second component carrier according to the corresponding relation. According to the adoption of the method and the system, the consistency of the measuring tasks at the sides of the target base station and the UE is realized.

Description

Measurement task collocation method and system in sub-district switching or the process of reconstruction
Technical field
The present invention relates to the communications field, in particular to a kind of sub-district switch or process of reconstruction in measurement task collocation method and system.
Background technology
Long Term Evolution (Long Term Evolution, abbreviating LTE as) Radio Resource of system control (Radio Resource Control abbreviates RRC as) layer is mainly used in and finishes broadcasting, paging, the management of Radio Resource control connection, radio bearer control, mobility functions, terminal survey report and control.In order to carry out the management of Radio Resource control connection, eNB need pass through Physical Downlink Shared Channel (Physical Downlink Shared Channel abbreviates PDSCH as) and send descending RRC message to UE.In order to reduce the PDSCH resource overhead, in the LTE system, the mode of increment signaling (delta signaling) configuration has been taked in the transmission of descending RRC message, that is, after UE receives RRC message, on the basis of original configuration information, configuration increases, deletes, revises to part according to the increment signaling, 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, thereby has saved interface-free resources.
In the LTE system, the process of switching may further comprise the steps as shown in Figure 1:
Step 1, source base station send the handoff request order after needing to implement to switch by the switch decision decision, carry the contextual information of UE at source base station in this order;
After step 2, target BS are received the handoff request order, will send to source base station to the configuration information of UE by the switching request response order;
After step 3, source base station are received the switching request response order, send to UE by switching command for the configuration information of UE target BS;
Step 4, UE inserts target BS according to the configuration information in this order after receiving switching command, inserts successfully back transmission switching and finishes order to target BS.
The process that RRC rebuilds may further comprise the steps as shown in Figure 2:
Step 1 when UE decision carrying out RRC rebuilds, sends RRC to serving BS and rebuilds request;
After step 2, serving BS receive that RRC rebuilds request, send RRC to UE and rebuild order;
Step 3 is responded the RRC reconstruction to the base station after UE execution RRC process of reconstruction is finished and is finished message;
Step 4, after RRC rebuild and finishes, the base station generally can be carried out RRC reprovision process again one time, and particularly, the order of RRC reprovision is initiated to UE in the base station;
Step 5 is responded the RRC reprovision to the base station after UE execution RRC reprovision process is finished and is finished message.
Under connected state, the detailed process of measurement may further comprise the steps:
Step 1, network side will be measured control messages and send to UE, wherein, comprise other association attributeses of measuring sign, measuring object, report configuration and measuring in this measurement control messages, measure sign measuring object and report configuration association are got up to form a complete measurement task.Measuring object has comprised the measuring object attribute (as carrier wave, Neighboring Cell List etc.), each carrier wave only can dispose a measuring object, and the report configuration has comprised the report configuration attribute (as Event triggered or periodic report, the event definition (A1, A2...) that triggers reports number of times etc.).
Step 2, UE goes to carry out and measures and assessment according to measuring measuring object, report configuration in the control messages, and generates measurement report according to measurement result and report network side.
In order to reduce the expense that switching and RRC rebuild back RRC reprovision signaling, UE is in carrying out alien frequencies switching or process of reconstruction, can measure task switching at the measurement task: when the Serving cell (sub-district before switching or the reconstruction, be called source) comprise in the measuring object to UE configuration Target cell (switch or rebuild after the sub-district, be called target side) carrier wave, as shown in Figure 3, UE can dispose measuring object, the report configuration of Serving cell place carrier wave to exchange with measuring object, the report of Target cell place carrier wave; Do not comprise the carrier wave of Target cell in the measuring object of Serving cell to the UE configuration, UE is deletion and the identical measurement task of Serving cell place, source frequency just.As shown in Figure 3, concrete exchange process is as follows:
Cell-of-origin (that is, Serving cell among Fig. 3) place carrier wave has two measurement tasks, MID#0 (MO#0+RC#0), and MID#1 (MO#0+RC#1), Target cell (being Target cell among Fig. 3) place carrier wave has a measurement task, MID#2 (MO#1+RC#2).The process that exchanges is exactly, and two of MO#0 are measured task MID#0 and MID#1, and MO#1 is given in configuration, be new MID#0 (MO#1+RC#0), MID#1 (MO#1+RC#1) disposes promptly new MID#2 (MO#0+RC#2) to MO#0 with the measurement task MID#1 of MO#1.
Source base station carries the measurement task configuration information of UE at source base station for the handoff request order of target BS, after target BS is received this handoff request order, if being alien frequencies, this handoff request switches, target BS can be carried out above-mentioned measurement task switching action so, target BS disposes new measurement task (by the configuration of increment means of signaling) based on the measurement task after exchanging to UE afterwards, be included in the switching request response order and be transmitted to UE by source base station, after UE receives switching command, carry out earlier and measure task switching, carry out new measurement mission bit stream in the increment signaling of target BS configuration then, the final measurement task of UE and target BS just can be consistent like this, and, can save interface-free resources because target BS is an increment signaling to the new measurement task of UE configuration.
For higher data rate is provided to the mobile subscriber, advanced long-term evolution system (Long Term Evolution Advance, abbreviation LTE-A) carrier aggregation technology (Carrier Aggregation has been proposed, abbreviate CA as), with two or more component carrier (Component Carriers, abbreviate CC as) polymerization, so that for the UE with respective capabilities provides bigger broadband, improve the peak rate of UE.LTE-A UE with carrier aggregation ability, transceive data on a plurality of component carriers simultaneously, the UE that below relates to is this type of UE except specifying.In the LTE-A system, UE can pass through a plurality of component carriers (as CC1 after entering connected state simultaneously, CC2) communicate with source base station, the base station can or be decided to be UE approximately according to agreement by explicit configuration and specify a main carrier (Primary Component Carrier, abbreviate PCC as), UE need be on PCC monitoring system message, other component carrier is called auxilliary carrier wave (Secondary ComponentCarrier abbreviates SCC as).
The inventor finds, because carrier aggregation Serving cell and carrier aggregation abutting subdistrict all might comprise a plurality of carrier waves, that is to say, the Target cell of Serving cell and switching or reconstruction all might comprise a plurality of carrier waves, therefore, if adopting the principle of above-mentioned measurement task switching judges, can't determine the exchange corresponding relation between a plurality of carrier waves of a plurality of carrier waves of Serving cell and Target cell, it is uncertain that this can cause exchange to exist, correspondingly, may make target BS there are differences between the configuration of measuring task and measurement task that UE is understood are disposed, thereby cause the measuring process confusion, make base station side can't obtain complete measurement result, the UE side causes system resource waste owing to carry out wrong measuring process.
Summary of the invention
Main purpose of the present invention is to provide measurement task collocation method and the system in switching of a kind of sub-district or the process of reconstruction, to address the above problem at least.
According to an aspect of the present invention, measurement task collocation method in switching of a kind of sub-district or the process of reconstruction is provided, may further comprise the steps: target BS is selected first component carrier from first component carrier set that UE uses Serving cell, from the second component carrier set that UE will use, select the second component carrier wave identical Target cell, and set up the one-to-one relationship between first component carrier and the second component carrier wave with the first component carrier quantity; Target BS is that the frequency of the measurement task of first component carrier and measuring object is that the measurement task of second component carrier wave exchanges according to corresponding relation to the frequency of measuring object, and user equipment (UE) obtains corresponding relation; UE is that the frequency of the measurement task of first component carrier and measuring object is that the measurement task of second component carrier wave exchanges according to corresponding relation to the frequency of measuring object.
According to another aspect of the present invention, provide a kind of sub-district switch or process of reconstruction in measurement task collocation method, may further comprise the steps: the frequency of target BS deletion measuring object is the measurement task of the frequency of the measurement task of the component carrier that uses in Serving cell of UE and the measuring object component carrier that will use in Target cell as UE; Target BS is a 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 frequency of the measurement task of the component carrier that uses in Serving cell of UE and the measuring object component carrier that will use in Target cell as UE, and accepts the measurement task of configuration.
According to a further aspect of the invention, measurement task configuration-system in switching of a kind of sub-district or the process of reconstruction is provided, comprise target BS and UE, wherein, target BS comprises: select module, be used for selecting first component carrier in first component carrier set that Serving cell uses, the second component carrier set that Target cell will use, select the second component carrier wave identical with the first component carrier quantity from UE from UE; Relation is set up module, is used to set up the one-to-one relationship between first component carrier and the second component carrier wave; First Switching Module, being used for according to corresponding relation is that the frequency of the measurement task of first component carrier and measuring object is that the measurement task of second component carrier wave exchanges to the frequency of measuring object; UE comprises: acquisition module is used to obtain corresponding relation; Second Switching Module, being used for according to corresponding relation is that the frequency of the measurement task of first component carrier and measuring object is that the measurement task of second component carrier wave exchanges to the frequency of measuring object.
According to a further aspect of the invention, measurement task configuration-system in switching of a kind of sub-district or the process of reconstruction is provided, comprise target BS, source base station and UE, wherein, target BS comprises: the measurement task of the component carrier that the measurement task of first removing module, the frequency that is used for the deleting measuring object component carrier that to be UE use at Serving cell and the frequency of measuring object will be used at Target cell as UE; First configuration module is used to UE allocating and measuring task; Sending module is used for sending the measurement task that disposes to UE; UE comprises: the measurement task of the component carrier that the measurement task of second removing module, the frequency that is used for the deleting measuring object component carrier that to be UE use at Serving cell and the frequency of measuring object will be used in Target cell as UE; Second configuration module is used to the measurement task of accepting to dispose.
By the present invention, the carrier wave that is used to exchange that adopts target BS to select is set up one-to-one relationship, UE obtains this corresponding relation, follow-up UE measures task switching according to this corresponding relation, solved the inconsistent problem of measurement task that the uncertainty of measuring the principle of task switching in the correlation technique in the carrier aggregation causes target BS and UE side, in carrier aggregation system, realized the consistency of the measurement task of target BS and UE side.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the detail flowchart of handoff procedure in the LTE system;
Fig. 2 is the detail flowchart of RRC process of reconstruction in the LTE system;
Fig. 3 is a schematic diagram of measuring the task switching process in the LTE system;
Fig. 4 is according to a kind of sub-district switching of the embodiment of the invention or the flow chart of the measurement task collocation method in the process of reconstruction;
Fig. 5 is according to a kind of sub-district switching of the embodiment of the invention or the preferred structure block diagram one of the measurement task configuration-system in the process of reconstruction;
Fig. 6 is the schematic diagram according to the carrier aggregation of the embodiment of the invention 1;
Fig. 7 is the schematic diagram according to the measurement task switching of the embodiment of the invention 1;
Fig. 8 is the schematic diagram according to the carrier aggregation of the embodiment of the invention 2 and embodiment 6;
Fig. 9 is the schematic diagram according to the measurement task switching of the embodiment of the invention 2 and embodiment 6;
Figure 10 is the schematic diagram according to the carrier aggregation of the embodiment of the invention 3;
Figure 11 is the schematic diagram according to the carrier aggregation of the embodiment of the invention 4;
Figure 12 is the schematic diagram according to the carrier aggregation of the embodiment of the invention 5;
Figure 13 is according to the another kind of sub-district switching of the embodiment of the invention or the flow chart of the measurement task collocation method in the process of reconstruction;
Figure 14 is according to the another kind of sub-district switching of the embodiment of the invention or the structured flowchart of the measurement task configuration-system in the process of reconstruction; And
Figure 15 is according to a kind of sub-district switching of the embodiment of the invention or the preferred structure block diagram two of the measurement task configuration-system in the process of reconstruction.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
For identical with switching the carrier wave that is defined as source and target side frequently in the carrier aggregation, i.e. the quantity unanimity of carrier wave, and frequency unanimity separately, other LTE-A intra-system handover all are called alien frequencies and switch.Secondly, for unification illustrates,, be to switch to target side by source for switching, for reconstruction, think then and rebuild the preceding source that is that after the reconstruction is target side, so the alien frequencies reconstruction is consistent with the source of alien frequencies switching and the definition of target side.
Fig. 4 is that this method may further comprise the steps according to a kind of sub-district switching of the embodiment of the invention or the flow chart of the measurement task collocation method in the process of reconstruction:
Step S402, target BS is selected first component carrier from first component carrier set that UE uses Serving cell, from the second component carrier set that UE will use, select the second component carrier wave identical Target cell, and set up the one-to-one relationship between first component carrier and the second component carrier wave with the first component carrier quantity;
Step S404, target BS is that the frequency of the measurement task of first component carrier and measuring object is that the measurement task of second component carrier wave exchanges according to corresponding relation to the frequency of measuring object, and UE obtains above-mentioned corresponding relation;
Step S406, UE is that the frequency of the measurement task of first component carrier and measuring object is that the measurement task of second component carrier wave exchanges according to corresponding relation to the frequency of measuring object.
The principle of the measurement task switching in the correlation technique only is only applicable to single-carrier system, and for carrier aggregation system, can't determine the exchange corresponding relation between a plurality of carrier waves of a plurality of carrier waves of Serving cell and Target cell, it is uncertain that this can cause exchange to exist, and this may make target BS there are differences between the configuration of measuring task and measurement task that UE is understood are disposed.The method that provides by the embodiment of the invention, the carrier wave that is used to exchange that makes target BS to select is set up one-to-one relationship, obtain the corresponding relation of having set up by UE again, follow-up UE measures task switching according to this corresponding relation, make UE can know the exchange corresponding relation, thereby make target BS reach consistent with the measurement task configuration that UE is understood, and then make UE to carry out correct measurement the measurement task of actual disposition to the configuration of measuring task.
Preferably, UE obtains corresponding relation and comprises: UE receives corresponding relation from target BS by source base station.The indication that this method is carried out corresponding relation implements fairly simple, and can dispose and indicate corresponding relation neatly.
Preferably, UE obtains corresponding relation and comprises: make an appointment between target BS and the UE and set up the rule that corresponding relation adopts, UE sets up one-to-one relationship between first component carrier and the second component carrier wave according to this rule.By this method, can reduce the signaling that is used for the configuration of measurement task in switching or the process of reconstruction effectively, improve utilization rate of air interface resource, provide good business experience to the user.
Preferably, the one-to-one relationship of setting up between first component carrier and the second component carrier wave comprises: be provided with between principal component carrier wave PCC in first component carrier set and the PCC in the second component carrier set and have one-to-one relationship.PCC in first component carrier set and the PCC in the second component carrier set be made as measure a pair of of task switching with reference to carrier frequency, thereafter, target BS is configured modification by the increment configuration to the PCC in the second component carrier set again, because the measurement configuration to PCC is general more similar, therefore, index word is less, can reduce signaling consumption to large extent, improves utilization rate of air interface resource.
Preferably, in the frequency that according to corresponding relation to the frequency of measuring object is the measurement task of first component carrier and measuring object is after the measurement task of second component carrier wave exchanges, also to comprise: is that the measurement task of other component carriers except that first component carrier in the set of first component carrier (it is SCC) is configured according to the configuration of the measurement task after the exchange of the PCC in the set of first component carrier to the frequency of measuring object.In this method, because SCC in the same component carrier set and the measurement configuration of PCC are more similar, therefore, configuration according to the PCC in the set of first component carrier is configured the component carrier in first component carrier set of not setting up corresponding relation, make amendment by the increment configuration again in the succeeding target base station, can reduce signaling consumption to large extent, improve utilization rate of air interface resource.
Preferably, in the frequency that according to corresponding relation to the frequency of measuring object is the measurement task of first component carrier and measuring object is after the measurement task of second component carrier wave exchanges, also to comprise: is that the measurement task of other component carriers except that the second component carrier wave in the second component carrier set (it is SCC) is configured according to the configuration of the measurement task after the exchange of the PCC in the second component carrier set to the frequency of measuring object.In this method, because SCC in the same component carrier set and the measurement configuration of PCC are more similar, therefore, configuration according to the PCC in the second component carrier set is configured the component carrier in the second component carrier set of not setting up corresponding relation, make amendment by the increment configuration again in the succeeding target base station, can reduce signaling consumption to large extent, improve utilization rate of air interface resource.
Preferably, the one-to-one relationship of setting up between first component carrier and the second component carrier wave comprises: be provided with between first component carrier with same frequency and the second component carrier wave and have one-to-one relationship.Frequency for measuring object is that identical measurement task does not need to do any processing, it is the identical measurement task of frequency that UE continues to keep measuring object, the increment configuration is carried out according to this measurement task in the base station, can reduce the signaling that is used for the configuration of measurement task in switching or the process of reconstruction effectively, improve utilization rate of air interface resource, provide good business experience to the user.
Preferably, setting have have one-to-one relationship between first component carrier of same frequency and the second component carrier wave after, also comprise: for first component carrier and second component carrier wave with different frequency are set up one-to-one relationship according to predefined order.
Preferably, in the frequency that according to corresponding relation to the frequency of measuring object is the measurement task of first component carrier and measuring object is after the measurement task of second component carrier wave exchanges, also to comprise: from the frequency of measuring object is that the frequency of deletion measuring object in the measurement task of the carrier wave the set of first component carrier is the measurement task of other component carriers except that first component carrier in the set of first component carrier.Delete the measurement task of not setting up the component carrier of corresponding relation in first component carrier set, shared resource in the time of can reducing UE and measure task has improved the processing speed of UE.
Preferably, in the frequency that according to corresponding relation to the frequency of measuring object is the measurement task of first component carrier and measuring object is after the measurement task of second component carrier wave exchanges, also to comprise: to the frequency of measuring object is that the measurement task of other component carriers except that the second component carrier wave in the second component carrier set is configured.Measure configuration for the measurement task of the component carrier of not setting up corresponding relation in the second component carrier set, make target BS can obtain complete measurement result, help the correct judgement of switching or rebuilding.
Preferably, and the quantity N=min of first component carrier and second component carrier wave (a, b), wherein, a is the quantity of the component carrier that comprises in first component carrier set, and b is the quantity of the component carrier that comprises in the second component carrier set, (a b) gets smaller value among a and the b to min.This method can be measured task switching as much as possible, thereby the expense of the side that reduces to eat dishes without rice or wine on to greatest extent improves the utilance of the side of eating dishes without rice or wine, and provides good business experience to the user.
The embodiment of the invention also provides the measurement task configuration-system in switching of a kind of sub-district or the process of reconstruction, comprise target BS 51 and UE 52, wherein, target BS 51 comprises: select module 53, be used for selecting first component carrier in first component carrier set that Serving cell is using, from the second component carrier set that UE will use, select the second component carrier wave identical Target cell with the first component carrier quantity from UE; Relation is set up module 54, is used to set up the one-to-one relationship between first component carrier and the second component carrier wave; First Switching Module 55, being used for according to corresponding relation is that the frequency of the measurement task of first component carrier and measuring object is that the measurement task of second component carrier wave exchanges to the frequency of measuring object; UE 52 comprises: acquisition module 56 is used to obtain above-mentioned corresponding relation; Second Switching Module 57, being used for according to corresponding relation is that the frequency of the measurement task of first component carrier and measuring object is that the measurement task of second component carrier wave exchanges to the frequency of measuring object.
The principle of the measurement task switching in the correlation technique only is only applicable to single-carrier system, and for carrier aggregation system, can't determine the exchange corresponding relation between a plurality of carrier waves of a plurality of carrier waves of Serving cell and Target cell, it is uncertain that this can cause exchange to exist, and this may make configuration that 51 pairs of target BS measure task and the measurement task that UE 52 is understood there are differences between disposing.In the system that the embodiment of the invention provides, set up the carrier wave that is used to exchange that module 54 will select by relation and set up one-to-one relationship, follow-up UE 52 obtains corresponding relation by acquisition module 56, second Switching Module 57 of UE 52 is measured task switching according to this corresponding relation, make UE 52 can know the exchange corresponding relation, thereby the configuration that makes 51 pairs of target BS measure task reaches consistent with the measurement task configuration that UE 52 is understood, and then makes UE 52 to carry out correct measurement to the measurement task of actual disposition.
Preferably, as shown in Figure 5, the acquisition module 56 among the UE 52 is used for receiving target base station 51 and is sent to source base station, and is forwarded to the corresponding relation of this UE 52 by source base station 58.Perhaps, as shown in figure 15, this acquisition module 56 is used for setting up one-to-one relationship between first component carrier and the second component carrier wave according to the rule of setting up corresponding relation of making an appointment between UE 52 and the target BS 51.
The embodiment 1-5 that describes below combines the technical scheme of above-mentioned a plurality of preferred embodiments.Wherein, what embodiment 2 described is the alien frequencies process of reconstruction, and what other embodiment described is the alien frequencies handoff procedure.What embodiment 5 described is LTE-A UE switches to the LTE system from the LTE-A system processing procedure.
Embodiment 1
As shown in Figure 6, UE resides on the CC1, and initiates RRC connect and set up on CC1, RRC connect set up process and finish after, UE access carrier aggregation cell 1 enters connected state, CC1 is PCC.Because professional needs, network side has disposed CC2 to UE and has carried out carrier aggregation, so the component carrier that current UE is used simultaneously is CC1, CC2 (being S-CC1 and S-CC2), and CC1 is PCC, and CC2 is SCC.The task of wherein measuring in the content before the exchange shown in Fig. 7 (a).
When UE moves to carrier aggregation sub-district 2, source base station is made the judgement of switching to target BS, and UE is switched in the carrier aggregation sub-district 2, only uses CC1 (being T-CC1).Source base station has comprised the measurement task of UE at source base station in sending to the handoff request message of target BS, can also comprise the carrier information (as S-CC1 and S-CC2, CC1 is PCC etc.) of the current use of UE.
After target BS receives the handoff request message of source base station, judge this time to switch and belong to the alien frequencies switching, wherein S-CC1 is identical frequency with T-CC1, therefore the measurement task that with measuring object is CC1 all keeps, the measurement task of S-CC2 is all deleted (promptly deleting MID#4-7), and the measurement task of other CC4 also keeps.Result after the target BS execution measurement task switching is shown in Fig. 7 (b).
Target BS is given the increment signaling of UE allocating and measuring task, as is increased a MID#4 (the alien frequencies A3 incident on the CC2) according to the result of Fig. 7 (b), and final measurement task result is 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 is received, send to UE by switching command.
After UE receives switching command, with the measurement task reservation of CC1, the measurement task (promptly deleting MID#4-7) of deletion CC2, the measurement task of CC4 also keeps, and carries out the measurement task configuration in the increment signaling then, and the result who finally measures task is consistent with Fig. 7 (c).
Embodiment 2
As shown in Figure 8, UE resides on the CC1, and initiates RRC connect and set up on CC1, RRC connect set up process and finish after, UE access carrier aggregation cell 1 enters connected state, CC1 is PCC.Because professional needs, network side has disposed CC2 to UE and has carried out carrier aggregation, so the component carrier that current UE is used simultaneously is CC1, CC2 (being S-CC1 and S-CC2), and CC1 is PCC, and CC2 is SCC.The measurement task in the content before the exchange shown in Fig. 9 (a).
When UE in carrier aggregation sub-district 1 RLF takes place, need to initiate RRC and rebuild.UE at first carries out cell selecting, and UE has selected the carrier aggregation sub-district 2 on the CC3, only uses CC3 (being T-CC3), and carrier aggregation sub-district 2 is the sub-district of same base with carrier aggregation sub-district 1.
After target side receives the RRC reconstruction request message of UE, judge this time to switch and belong to the alien frequencies reconstruction, with S-CC1 and T-CC3 pairing, with measuring object is that CC1 and measuring object are the measurement task execution exchanges of CC3, the measurement task of S-CC2 is all deleted (promptly deleting MID#4-6), and the measurement task of other CC4 also keeps.Result after the target side execution measurement task switching is shown in Fig. 9 (b).
Target side is given the increment signaling of UE allocating and measuring task according to the result of Fig. 9 (b), increases MID#4 (the same frequency A3 incident on the CC2), MID#5 (the A4 incident on the CC2), and final measurement task result is shown in Fig. 9 (c).Send UE by the RRC reallocation message, and comprise the information of S-CC1 and T-CC3 pairing, after UE receives, measurement task switching with CC1 and CC3, the measurement task (promptly deleting MID#4-6) of deletion CC2, the measurement task of CC4 also keeps, and carries out the measurement task configuration in the increment signaling then, and the result who finally measures task is consistent with Fig. 9 (c).
For the measurement task of CC2, can adopt with exchange after the consistent configuration of measurement task of CC1, target side is given the increment configuration of UE sending measuring task again according to this measurement task, can save signaling consumption biglyyer.
Embodiment 3
As shown in figure 10, UE resides on the CC1, and initiates RRC connect and set up on CC1, RRC connect set up process and finish after, UE access carrier aggregation cell 1 enters connected state, CC1 is PCC.Because professional needs, network side has disposed CC2 to UE and has carried out carrier aggregation, so the component carrier that current UE is used simultaneously is CC1, CC2 (being S-CC1 and S-CC2), and CC1 is PCC, and CC2 is SCC.
When UE moves to carrier aggregation sub-district 2, source base station is made the judgement of switching to target BS, and UE is switched in the carrier aggregation sub-district 2, uses CC2 and CC3 (being T-CC2 and T-CC3).Source base station has comprised the measurement task of UE at source base station in sending to the handoff request message of target BS, can also comprise the carrier information (as S-CC1 and S-CC2, CC1 is PCC etc.) of the current use of UE.
After target BS receives the handoff request message of source base station, judge this time to switch and belong to the alien frequencies switching, wherein S-CC2 is identical frequency with T-CC2, therefore the measurement task that with measuring object is CC2 all keeps, the measurement task of S-CC1 and T-CC3 exchanges (can with reference to figure 7), and the measurement task of other CC4 also keeps.
Target BS to measuring the task handling result, is given the increment signaling of UE allocating and measuring task according to above-mentioned.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 is received, sends to UE by switching command.
After UE receives switching command, with the measurement task reservation of CC2, the measurement task switching of CC1 and CC3, the measurement task of CC4 also keeps, and carries out the measurement task configuration in the increment signaling then, obtains the configuration of final measurement task.
Embodiment 4
As shown in figure 11, UE resides on the CC1, and initiates RRC connect and set up on CC1, RRC connect set up process and finish after, UE access carrier aggregation cell 1 enters connected state, CC1 is PCC.Because professional needs, network side has disposed CC2 to UE and has carried out carrier aggregation, so the component carrier that current UE is used simultaneously is CC1, CC2 (being S-CC1 and S-CC2), and CC1 is PCC, and CC2 is SCC.
When UE moves to carrier aggregation sub-district 2, source base station is made the judgement of switching to target BS, and UE is switched in the carrier aggregation sub-district 2, uses CC3, CC4 and CC5 (being T-CC3, T-CC4 and T-CC5), and indication T-CC3 is PCC.Source base station has comprised the measurement task of UE at source base station in sending to the handoff request message of target BS, can also comprise the carrier information (as S-CC1 and S-CC2, CC1 is PCC etc.) of the current use of UE.
After target BS receives the handoff request message of source base station, judge this time to switch and belong to the alien frequencies switching, determine S-PCC (being S-CC1) and T-PCC (being T-CC3) pairing (being the measurement task switching of CC1 and CC3) (can with reference to figure 9), S-CC2 and T-CC4 pairing (being the measurement task switching of CC2 and CC4).
Target BS to measuring the task handling result, is given the increment signaling (as increasing the measurement task configuration of CC5) of UE allocating and measuring task according to above-mentioned.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 is received, sends to UE by switching command.
After UE received switching command, with the measurement task switching of CC1 and CC3, the measurement task configuration in the increment signaling was carried out in the measurement task switching of CC2 and CC4 then, obtains the configuration of final measurement task.
The measurement task configuration of CC5 also can be adopted the measurement task configuration of exchange back CC3 earlier, and target BS disposes the increment configuration that issues CC5 to UE according to the measurement task of CC3, can save space interface signaling biglyyer.
Embodiment 5
As shown in figure 12, UE resides on the CC1, and initiates RRC connect and set up on CC1, RRC connect set up process and finish after, UE access carrier aggregation cell 1 enters connected state, CC1 is PCC.Because professional needs, network side has disposed CC2 to UE and has carried out carrier aggregation, so the component carrier that current UE is used simultaneously is CC1, CC2 (being S-CC1 and S-CC2), and CC1 is PCC, and CC2 is SCC.Carrier aggregation sub-district 1 belongs to base station 1, is the base station of LTE-A.
When UE moves to LTE sub-district 2, LTE sub-district 2 belongs to base station 2, is the base station of LTE.Source base station is made the judgement of switching to target BS, and UE is switched in the LTE sub-district 2, uses CC3 (being T-CC3).Because target BS is the LTE system, only supports a carrier wave, and be the principle that adopts the LTE system for the exchange of the task of measurement.Therefore, source base station is when sending handoff request message to target BS, and with SCC (being CC2) deletion, so, UE only uses carrier wave, i.e. a CC1.At this moment, source base station sends in the handoff request message to target BS, has comprised 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 handoff request message of source base station, judge this time to switch to belong to the alien frequencies switching that directly with the measurement task switching of CC1 and CC3, the measurement task of other CC4 keeps.
Target BS is given the increment signaling of UE allocating and measuring task according to the result of above-mentioned measurement task switching.Send to source base station by handover request ack message, after source base station is received, send to UE by switching command.
After UE received switching command, with the measurement task switching of CC1 and CC3, the measurement task of CC4 also kept, and carried out the measurement task configuration in the increment signaling then, obtained final measurement task configuration.
Figure 13 is according to the another kind of sub-district switching of the embodiment of the invention or the flow chart of the measurement task collocation method in the process of reconstruction, may further comprise the steps:
Step S1302, the measurement task of the component carrier that the measurement task of the frequency of the target BS deletion measuring object component carrier that to be UE use at Serving cell and the frequency of measuring object will be used at Target cell as UE;
Step S1304, target BS are UE allocating and measuring task, and send the measurement task of configuration to UE;
Step S1306, the measurement task of the component carrier that the measurement task of the frequency of the UE deletion measuring object component carrier that to be UE use at Serving cell and the frequency of measuring object will be used at Target cell as UE, and accept the measurement task of this configuration.
The principle of the measurement task switching of correlation technique only is only applicable to single-carrier system, and for carrier aggregation system, can't determine the exchange corresponding relation between a plurality of carrier waves of a plurality of carrier waves of Serving cell and Target cell, it is uncertain that this can cause exchange to exist, and this may make target BS there are differences between the configuration of measuring task and measurement task that UE is understood are disposed.The method that provides by the embodiment of the invention, make target BS be UE allocating and measuring task again, and should the measurement task be sent to UE by source base station, after UE receives this measurement task, current measurement task is updated to the measurement task that receives makes target BS reach consistent with UE to the configuration of measuring task to the configuration of measuring task, and then make UE to carry out correct measurement to the measurement task of actual disposition, and this method makes the processing of UE and base station all simplify.
Preferably, the above-mentioned deletion process of measuring task can be the MID of deletion measurement task.
Figure 14 is according to the another kind of sub-district switching of the embodiment of the invention or the structured flowchart of the measurement task configuration-system in the process of reconstruction, this system comprises target BS 1401, source base station 1402 and UE 1403, wherein, target BS 1401 comprises: the measurement task of the component carrier that the measurement task of first removing module 1404, the frequency that is used for the deleting measuring object component carrier that to be UE 1403 use at Serving cell and the frequency of measuring object will be used in Target cell as UE; First configuration module 1405 is used to UE 1403 allocating and measuring tasks; Sending module 1406 is used for sending the measurement task that disposes to UE 1403; UE 1403 comprises: the measurement task of the component carrier that the measurement task of second removing module 1407, the frequency that is used for the deleting measuring object component carrier that to be UE use at Serving cell and the frequency of measuring object will be used in Target cell as UE; Second configuration module 1408 is used to accept 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 that disposes to source base station 1402, is transmitted to UE 1403 by the measurement task that source base station 1402 will dispose again.
Embodiment 6
Still be that example describes with Fig. 8, UE resides on the CC1, and initiates RRC connect and set up on CC1, RRC connect set up process and finish after, UE access carrier aggregation cell 1 enters connected state, CC1 is PCC.Because professional needs, network side has disposed CC2 to UE and has carried out carrier aggregation, so the component carrier that current UE is used simultaneously is CC1, CC2 (being S-CC1 and S-CC2), and CC1 is PCC, and CC2 is SCC.The content of measurement task is shown in Fig. 9 (a).
When UE moves to carrier aggregation sub-district 2, source base station is made the judgement of switching to target BS, and UE is switched in the carrier aggregation sub-district 2, only uses CC3 (being T-CC3).Source base station has comprised the measurement task of UE at source base station in sending to the handoff request message of target BS, can also comprise the carrier information (as S-CC1 and S-CC2, CC1 is PCC etc.) of the current use of UE.
After target BS receives the handoff request message of source base station, judge this time to switch to belong to the alien frequencies switching that the measurement task of CC1, CC2 and CC3 is all deleted (promptly deleting MID#1-8), and the measurement task of other CC4 (being MID#9) keeps.
Target BS is given the complete configuration signaling of UE allocating and measuring task, as the measurement configuration of MID#1-8 among Fig. 9 (c).Send to source base station by handover request ack message, after source base station is received, send to UE by switching command.
After UE receives switching command, the measurement task of CC1, CC2, CC3 is all deleted (promptly deleting MID#1-8), the measurement task of CC4 keeps, and carries out the complete configuration of the measurement task in the target BS signaling then, and the result who finally measures task is consistent with Fig. 9 (c).
In sum, the scheme that the embodiment of the invention provides makes target BS reach consistent to the configuration of measuring task with the measurement task configuration that UE is understood, and then makes UE to carry out correct measurement to the measurement task of actual disposition.
Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (15)

  1. A sub-district switch or process of reconstruction in measurement task collocation method, it is characterized in that, may further comprise the steps:
    Target BS is selected first component carrier from first component carrier set that UE uses Serving cell, from the second component carrier set that UE will use Target cell, select and the identical second component carrier wave of the described first component carrier quantity, and set up one-to-one relationship between described first component carrier and the described second component carrier wave;
    Described target BS is that the frequency of the measurement task of described first component carrier and measuring object is that the measurement task of described second component carrier wave exchanges according to described corresponding relation to the frequency of measuring object, and user equipment (UE) obtains described corresponding relation;
    Described UE is that the frequency of the measurement task of described first component carrier and measuring object is that the measurement task of described second component carrier wave exchanges according to described corresponding relation to the frequency of measuring object.
  2. 2. method according to claim 1 is characterized in that, UE obtains described corresponding relation and comprises: described UE is by the described corresponding relation of source base station reception from described target BS.
  3. 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 the described UE and set up the rule that described corresponding relation adopts, described UE sets up one-to-one relationship between described first component carrier and the described second component carrier wave according to described rule.
  4. 4. according to each described method in the claim 1 to 3, it is characterized in that the one-to-one relationship of setting up between described first component carrier and the described second component carrier wave comprises:
    Be provided with between principal component carrier wave PCC in the set of described first component carrier and the PCC in the described second component carrier set and have one-to-one relationship.
  5. 5. method according to claim 4, it is characterized in that, in the frequency that according to described corresponding relation to the frequency of measuring object is the measurement task of described first component carrier and measuring object is after the measurement task of described second component carrier wave exchanges, also to comprise:
    Is that the measurement task of other component carriers except that described first component carrier in the set of first component carrier is configured according to the configuration of the measurement task after the exchange of the PCC in the set of described first component carrier to the frequency of measuring object.
  6. 6. method according to claim 4, it is characterized in that, in the frequency that according to described corresponding relation to the frequency of measuring object is the measurement task of described first component carrier and measuring object is after the measurement task of described second component carrier wave exchanges, also to comprise:
    Is that the measurement task of other component carriers except that described second component carrier wave in the second component carrier set is configured according to the configuration of the measurement task after the exchange of the PCC in the described second component carrier set to the frequency of measuring object.
  7. 7. according to each described method in the claim 1 to 3, it is characterized in that the one-to-one relationship of setting up between described first component carrier and the described second component carrier wave comprises:
    Setting has between described first component carrier of same frequency and the described second component carrier wave and has one-to-one relationship.
  8. 8. method according to claim 7 is characterized in that, setting have have an a pair of relation between described first component carrier of same frequency and the described second component carrier wave after, also comprise:
    For described first component carrier and described second component carrier wave with different frequency are set up one-to-one relationship according to predefined order.
  9. 9. method according to claim 1, it is characterized in that, in the frequency that according to described corresponding relation to the frequency of measuring object is the measurement task of described first component carrier and measuring object is after the measurement task of described second component carrier wave exchanges, also to comprise:
    From the frequency of measuring object is that the frequency of deletion measuring object in the measurement task of the carrier wave described first component carrier set is the measurement task of other component carriers except that described first component carrier in described first component carrier set.
  10. 10. method according to claim 1, it is characterized in that, in the frequency that according to described corresponding relation to the frequency of measuring object is the measurement task of described first component carrier and measuring object is after the measurement task of described second component carrier wave exchanges, also to comprise:
    To the frequency of measuring object is that the measurement task of other component carriers except that described second component carrier wave in the described second component carrier set is configured.
  11. 11. 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 that comprises in the set of described first component carrier, and b is the quantity of the component carrier that comprises in the described second component carrier set, (a b) gets smaller value among a and the b to min.
  12. 12. switch a sub-district or process of reconstruction in measurement task collocation method, it is characterized in that, may further comprise the steps:
    The frequency of target BS deletion measuring object is the measurement task of the frequency of the measurement task of the component carrier that uses in Serving cell of UE and the measuring object component carrier that will use in Target cell as UE;
    Described target BS is described UE allocating and measuring task, and sends the measurement task of described configuration to described UE;
    The frequency of described UE deletion measuring object is that the frequency of the measurement task of the component carrier that uses in Serving cell of UE and measuring object is the measurement task of the described UE component carrier that will use in Target cell, and accepts the measurement task of described configuration.
  13. 13. method according to claim 12 is characterized in that, deletion measurement task comprises: the measurement sign MID that deletes described measurement task.
  14. 14. switch a sub-district or process of reconstruction in measurement task configuration-system, comprise target BS and UE, it is characterized in that,
    Described target BS comprises:
    Select module, be used for selecting first component carrier in first component carrier set that Serving cell uses, the second component carrier set that Target cell will use, select and the identical second component carrier wave of the described first component carrier quantity from described UE from described UE;
    Relation is set up module, is used to set up the one-to-one relationship between described first component carrier and the described second component carrier wave;
    First Switching Module, being used for according to described corresponding relation is that the frequency of the measurement task of described first component carrier and measuring object is that the measurement task of described second component carrier wave exchanges to the frequency of measuring object;
    Described UE comprises:
    Acquisition module is used to obtain described corresponding relation;
    Second Switching Module, being used for according to described corresponding relation is that the frequency of the measurement task of described first component carrier and measuring object is that the measurement task of described second component carrier wave exchanges to the frequency of measuring object.
  15. 15. switch a sub-district or process of reconstruction in measurement task configuration-system, comprise target BS, source base station and UE, it is characterized in that,
    Described target BS comprises:
    The measurement task of the measurement task of first removing module, the frequency that is used for the deleting measuring object component carrier that to be described UE use at Serving cell and the frequency of the measuring object component carrier that to be described UE will use at Target cell;
    First configuration module is used to described UE allocating and measuring task;
    Sending module is used for sending to described UE the measurement task of described configuration;
    Described UE comprises:
    The measurement task of second removing module, the frequency that is used for the deleting measuring object component carrier that to be described UE use at Serving cell and the frequency of measuring object are the measurement task of the described UE component carrier that will use in Target cell;
    Second configuration module is used to accept the measurement task of described configuration.
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