CN103906105B - A kind of management method of carrier wave - Google Patents
A kind of management method of carrier wave Download PDFInfo
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- CN103906105B CN103906105B CN201210589593.0A CN201210589593A CN103906105B CN 103906105 B CN103906105 B CN 103906105B CN 201210589593 A CN201210589593 A CN 201210589593A CN 103906105 B CN103906105 B CN 103906105B
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Abstract
This application discloses a kind of carrier management method, this method is with Pcell and adjacent area（Including Scell）The difference of signal intensity be condition in certain thresholding, that is, be based only upon A3 measurement reports, realize the management to carrier wave.The present invention can reduce the measurement event quantity carried out required for carrier management, therefore, the problems such as can effectively reducing the processing complexity of terminal, reduce the expense of space interface signaling and avoid Scell increase and frequent delete processing.
Description
Technical field
A kind of management method of carrier wave in mobile communication technology of the present invention, more particularly to carrier aggregation scene.
Background technology
The wireless communication system of future new era should meet the transmission characteristic of highest 1Gbps speed, to support to continuously emerge
Various new data services, in LTE-A（LTE-Advanced）Some key technologies in, carrier aggregation technology be improve data
The most direct method of transmission rate.
One of key issue of carrier aggregation technology is exactly carrier management, carrier management mainly include Pcell change,
Scell addition/deletion, activation/deactivation and Scell changes operation.When LTE-Advanced user's foundation for the first time or again
When building RRC connections, a cell can only be configured, the cell is main plot（Primary Cell, Pcell）, it is corresponded into
Member's carrier wave is main member carrier（Primary Component Carrier, PCC）；Then eNodeB is by RRC signaling, to use
Family increases serving cell, and distributes cell index, and the cell is referred to as secondary cell（Scell：Secondary Cell）, it is corresponded into
Member's carrier wave is secondary member carrier（SCC）.Because LTE-A user can configure multiple member carriers, therefore how to carry out multicarrier
Management, includes addition, deletion, modification and the Pcell switchings of carrier wave, is the premise of multi-carrier scheduling.
Current common Pcell management, by means of terminal survey report A1（Serving cell channel quality is higher than thresholding
Value）、A2（Serving cell channel quality is less than threshold value）、A3（Pcell meets certain difference with other cell channel quality）、A4
（Adjacent cell channel quality is higher than threshold value）Etc. being managed.Wherein, the activation for realizing Scell using A1 events will activate end
The SCC at end, A2 event realize Scell deletion, and user satisfaction or A2 events realize that Scell is deactivated, and A3 events are realized
Pcell switching and Pcell change, and A4 events realize that Scell addition will not be in other SCC in the SCC lists of terminal
Added to wherein.
Below by taking the motion process of terminal in Fig. 1 scenes as an example, the carrier management in traditional carrier aggregation scene is entered
Row explanation：
1st, in 1 position, terminal is in two Carrier States of carrier aggregation；
2nd, reach that A2 deactivates thresholding or satisfaction at mobile 2, triggering Scell carrier wave is deactivated；
3rd, before reaching 3, reach that A2 carrier waves delete thresholding, delete Scell, flow is matched somebody with somebody in triggering again；
4th, the switching of 3 location triggereds is reached（Single carrier switches）Flow is matched somebody with somebody in triggering again；
5th, 4 positions are reached, measurement report A4 is received, triggering increase Scell's matches somebody with somebody flow again；
6th, continue, to center of housing estate movement triggering A1 events, to notify MAC activation Scell.
It can be seen that there are the following problems for traditional carrier management method from above-mentioned example：
1st, measurement event configuration is excessive, and processing is complicated, the complexity of increase terminal processes and measurement, occupies a large amount of limited
Measure resource（Eat dishes without rice or wine maximum 32 to measure mark）.
2nd, to Scell increase and delete processing is frequent, is particularly added what large user went offline again in cell edge
Probability（Such as terminal judges to need to delete current Scell, by again with realization from center of housing estate to cell edge by A2 events
Scell is deleted, and when terminal is from cell edge return center of housing estate, judges that it is Scell to need to increase the cell by A4 events, so
Afterwards again with Scell increases are realized, so as to cause continually to increase and delete Scell）.
3rd, the current general activation or deactivation that Scell is realized by A1 events or user satisfaction.Needed using A1 events
MAC high-rise is notified, then notifies terminal is realized to activate by AMC CE, postpones larger and does not consider business demand；Only
User satisfaction is calculated by the data volume eated dishes without rice or wine in the terminal unit time, and digital signal processor is significantly greatly increased（DSP）Processing
Amount.
As can be seen here, in traditional carrier management method, because the measurement event being related to is more, the processing of end is caused to be answered
Frequent increase miscellaneous, to Scell and delete with interface-free resources expense it is many problems such as.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of carrier management method, this method can be reduced effectively end
The processing complexity at end, the expense for reducing space interface signaling and the problems such as avoid Scell increase and frequent delete processing.
In order to achieve the above object, technical scheme proposed by the present invention is：
A kind of carrier management method, including：
A, when terminal device UE determine be currently needed for triggering A3 events when, report A3 measurement reports to base station, wherein, it is described
The event thresholds value a3-ooffset of A3 events is negative value；
B, the base station according to the measurement report, judge the UE main plot Pcell channel quality level whether
Meet default secondary cell Scell to deactivate or activation condition, if it is, notifying MAC scheduling units are performed to deactivate accordingly
Secondary cell process that is living or activating the UE；
C, the base station judge whether to need to switch over the main plot of the UE according to the measurement report, if
It is then to perform corresponding main plot handoff procedure；Otherwise, according to the measurement report, judge whether to need the master to the UE
Cell is changed, if it is, performing corresponding main plot changes process；
D, according to the measurement report, judge whether to need to be added the secondary cell of the UE, if it is, performing
Corresponding secondary cell increase operation；
E, for appearing in each secondary cell in the A3 measurement reports in the secondary cell list of the UE, this is auxiliary small
The deletion counter O reset in area, it is each auxiliary small in the A3 measurement reports for not appeared in the secondary cell list of the UE
Area, adds one by the deletion counter of the secondary cell, should if the deletion counter of the secondary cell reaches default threshold value
Secondary cell is deleted from the carrier list of the UE.
In summary, carrier management method proposed by the present invention, this method carries out the management of carrier wave merely with A3 events, can
Effectively the reduction processing complexity of terminal, the expense of space interface signaling and solve Scell increase and delete processing is frequent etc. asks
Topic.
Brief description of the drawings
Fig. 1 is the motion process schematic diagram one of terminal；
Fig. 2 is the schematic flow sheet of the embodiment of the present invention one；
Fig. 3 is the motion process schematic diagram two of terminal.
Embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in further detail.
The present invention core concept be：Utilize Pcell and adjacent area（Including Scell）Signal intensity difference in certain thresholding
Interior method, i.e. based on A3 measurement reports, realize the management of carrier wave.So, due to reduce carry out carrier management required for
Measurement event quantity, therefore, can effectively reduce the processing complexity of terminal, reduce the expense of space interface signaling and avoid Scell
Increase and the problems such as frequent delete processing.
Fig. 2 is the schematic flow sheet of the embodiment of the present invention one, as shown in Fig. 2 the embodiment mainly includes：
Step 201, when terminal device UE determine be currently needed for triggering A3 events when, report A3 measurement reports to base station, its
In, the event thresholds value a3-offset of the A3 events is negative value.
In this step, UE determines to be currently needed for the specific method for triggering A3 events compared with system, except that, here
Need by the event thresholds value a3-offset of A3 events be negative value, with ensure the channel quality for other cells occur close to but
When being worse than the channel quality of UE main plots, that is, trigger A3 events and carry out carrier management, and different from small at other in transmission method
The channel quality in area just triggers switching or change that A3 events carry out main carrier when being better than the channel quality of UE main plots, so,
Can be by triggering A3 events in advance, while other carrier waves such as realize the increasing to the activation, deactivation and secondary cell of carrier wave, delete
Management, the event triggered with reducing carrier management to need.
Step 202, the base station judge the main plot Pcell of UE channel quality water according to the measurement report
It is flat whether to meet default secondary cell（Scell）Deactivate or activation condition, if it is, notifying MAC scheduling units to perform phase
The deactivation answered or activation UE secondary cell process.
Implementing for this step can be compared with system, equivalent to the function for the event 1 for performing existing system.That is base station
Judge the channel quality of UE main plots（Specially RSRP/RSRP/ path losses）Back-off thresholding is reached, if reaching thresholding, is led to
Know scheduling unit activation or deactivate the Scell of the UE.
It is preferred that to avoid pingpang handoff, secondary cell（Scell）Deactivation or activation condition can be as follows respectively：
Activation condition：The channel quality of the main plot of the UE is more than default back-off thresholding and returned with default power
Move back hysteresis factors toffSum.
Deactivation condition：The channel quality of the main plot of the UE is less than default back-off thresholding and default power
Rollback hysteresis factors toffDifference.
The design parameter of the channel quality can be RSRP or RSRQ.Specifically, when RSRP is more than TRSRP+toffOr
RSRQ is more than TRSRQ+toffThe scheduling unit user is notified to activate Scell；If RSRP is less than TRSRP-toffOr RSRQ is less than
TRSRQ-toffThe scheduling unit user is notified to deactivate the Scell of the user.Wherein TRSRPAnd TRSRPReturned for default power
Move back thresholding, toffFor back-off hysteresis factors, to avoid pingpang handoff.
Step 203, the base station judge whether to need to cut the main plot of the UE according to the measurement report
Change, if it is, performing corresponding main plot handoff procedure；Otherwise, according to the measurement report, judge whether to need to described
UE main plot is changed, if it is, performing corresponding main plot changes process.
Here, it is described to judge whether to need to switch over the main plot of the UE, if it is, performing main accordingly small
The specific method of area's handoff procedure can be：
According to the measurement report, judge in the measurement report with the presence or absence of the small of the secondary cell for being not belonging to the UE
Area, and the channel quality for being not belonging to the best cell Cell_X of channel quality in the cell of the secondary cell of the UE with it is described
The difference of UE main plot channel quality is more than default first hysteresis parameter values, if it is, triggering main plot handoff procedure, its
In, the main plot of the UE is switched on the Cell_X, the main plot of the UE before switching in reallocation message of eating dishes without rice or wine
Deleted with whole secondary cells.
First hysteresis parameter values are more than zero, and so the use above method can be better than UE master small there is neighboring area signal
The change process of main plot is triggered during area's signal.
Here, it is described to judge whether to need to be changed the Pcell of the UE, if it is, performing corresponding Pcell
The specific method of change process can be：
According to the measurement report, the cell with the presence or absence of the secondary cell for belonging to the UE in the measurement report is judged,
And the best cell Scell_Y of channel quality channel quality and the master are small in the cell of the secondary cell for belonging to the UE
The difference of area's channel quality is more than default second hysteresis parameter values, if it is, triggering main plot changes process, by the UE's
Main plot is switched on the Scell_Y, and the main plot of the UE is configured to in reallocation message of eating dishes without rice or wine the secondary cell of the UE,
The Scell_Y is configured to the main plot of the UE.
Second hysteresis parameter values are more than zero, can be so better than using the above method in the secondary cell signal for UE occur
The change process of main plot is triggered during the signal of UE main plots.
Using the achievable main plot of this step switching and change process, you can realize A3 events in existing system
Function.
Step 204, according to the measurement report, judge whether to need to be added the secondary cell of the UE, if it is,
Then perform corresponding secondary cell increase operation.
Here, judge whether to need to be added the secondary cell of the UE, increase if it is, performing corresponding secondary cell
The specific method of add operation can be：
For each cell cell_i in the measurement report, judge whether the cell meets：With the masters of the UE currently
Cell belongs to same base station, and non-UE secondary cell, and the UE is in the absence of auxiliary with cell cell_i common carrier frequencies
Cell, if it is satisfied, then judge whether the current configured carrier numbers of the UE reach default max-thresholds, if it is,
Select a secondary cell to replace with the cell_i in the secondary cell of the UE, otherwise, the cell_i is increased to described
In UE secondary cell list.
Specifically, the specific method of one secondary cell of selection can be：Any selection one in the secondary cell of the UE
Secondary cell is used as selected cell.
It is preferred that institute can be regard the secondary cell not occurred in the secondary cell of the UE in this A3 measurement report as
The cell of selection.
This step can realize the addition of secondary cell, you can realize the function of the A4 events of existing system.
Step 205, for appearing in each secondary cell in the A3 measurement reports in the secondary cell list of the UE, will
The deletion counter O reset of the secondary cell, it is every in the A3 measurement reports for not appeared in the secondary cell list of the UE
Individual secondary cell, adds one by the deletion counter of the secondary cell, if the deletion counter of the secondary cell reaches default threshold value,
Then the secondary cell is deleted from the carrier list of the UE.
This step, it is contemplated that if UE a certain secondary cell is not reported in measurement report, illustrate the secondary cell
Quality is relatively poor, so, the number of times not reported is recorded here with counter is deleted, the Counter Value is bigger, explanation
The secondary cell channel quality is poorer, can be deleted more than certain threshold value, and the size here according to Counter Value is achievable auxiliary
The deletion of cell, so as to realize the function of event 2.
By the above method, can merely with event 3 measurement report, you can realize the carrier management of event 1,2,3,4
Function, therefore, it can effectively the processing complexity of reduction terminal, the expense of space interface signaling and solves Scell increase and delete
The problems such as except handling frequent.
In order to which the technique effect of the present invention is expanded on further, below by taking the terminal movement locus shown in Fig. 3 as an example, to using
The flow of carrier management is illustrated after the present invention：
As shown in figure 3, when terminal moves to 4 from 1, it will the following flow of experience：
First, there is no Scell deletion in 1,2 processes, because Pcell and adjacent area（Including Scell）Signal intensity difference
In certain thresholding；
2nd, notify scheduling unit before reaching 3 positions, deactivate Scell, prepare switching, it is to avoid upper power compression and dry
Disturb；
3rd, reach the switching of 3 location triggereds and carry multicarrier switching；
4th, during 3 to 4, scheduling unit is notified to carry out Scell activation, scheduling unit is satisfied with according to business
Degree decides whether to carry out Scell activation；
From the foregoing, it will be observed that the cell moving process in terminal from the cell of a carrier aggregation to other carrier aggregations
In, using the present invention, the carrier management that can reduce member carrier matches somebody with somebody flow again.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (8)
1. a kind of carrier management method, it is characterised in that including：
A, when terminal device UE determine be currently needed for triggering A3 events when, report A3 measurement reports to base station, wherein, the A3 things
The event thresholds value a3-offset of part is negative value；
B, the base station judge whether the main plot Pcell of UE channel quality level meets according to the measurement report
Default secondary cell Scell is deactivated or activation condition, if it is, notify MAC scheduling units perform it is corresponding deactivate or
Activate the secondary cell process of the UE；
C, the base station judge whether to need to switch over the main plot of the UE according to the measurement report, if it is,
Perform corresponding main plot handoff procedure；Otherwise, according to the measurement report, judge whether to need to enter the main plot of the UE
Row changes, if it is, performing corresponding main plot changes process；
D, according to the measurement report, judge whether to need to be added the secondary cell of the UE, if it is, performing corresponding
Secondary cell increase operation；
E, for appearing in each secondary cell in the A3 measurement reports in the secondary cell list of the UE, by the secondary cell
Counter O reset is deleted, for not appearing in each secondary cell in the A3 measurement reports in the secondary cell list of the UE,
The deletion counter of the secondary cell is added one, it is if the deletion counter of the secondary cell reaches default threshold value, this is auxiliary
Cell is deleted from the carrier list of the UE.
2. according to the method described in claim 1, it is characterised in that described to judge whether to need to carry out the main plot of the UE
Switching, if it is, performing corresponding main plot handoff procedure includes：
According to the measurement report, the cell with the presence or absence of the secondary cell for being not belonging to the UE in the measurement report is judged, and
The channel quality for being not belonging to the best cell Cell_X of channel quality in the cell of the secondary cell of the UE is with the UE's
The difference of main plot channel quality is more than default first hysteresis parameter values, if it is, triggering main plot handoff procedure, wherein,
The main plot of the UE is switched on the Cell_X, the main plot of the UE and complete before switching in reallocation message of eating dishes without rice or wine
Portion's secondary cell is deleted, and first hysteresis parameter values are more than zero.
3. according to the method described in claim 1, it is characterised in that described to judge whether to need to carry out the Pcell of the UE
Change, include if it is, performing corresponding Pcell and changing process：
According to the measurement report, the cell with the presence or absence of the secondary cell for belonging to the UE in the measurement report, and institute are judged
The channel quality and the main plot for stating the best cell Scell_Y of channel quality in the cell for the secondary cell for belonging to the UE are believed
The difference of road quality is more than default second hysteresis parameter values, if it is, triggering main plot changes process, the master of the UE is small
Area is switched on the Scell_Y, and the main plot of the UE is configured to the secondary cell of the UE in reallocation message of eating dishes without rice or wine, by institute
The main plot that Scell_Y is configured to the UE is stated, second hysteresis parameter values are more than zero.
4. according to the method described in claim 1, it is characterised in that described to judge whether to need to carry out the secondary cell of the UE
Addition, if it is, performing corresponding secondary cell increase operation includes：
For each cell cell_i in the measurement report, judge whether the cell meets：The current main plot with the UE
Belong to same base station, and non-UE secondary cell, and the secondary cell with cell cell_i common carrier frequencies is not present in the UE,
If it is satisfied, then judging whether the current configured carrier numbers of the UE reach default max-thresholds, if it is, described
Select a secondary cell to replace with the cell_i in UE secondary cell, otherwise, the cell_i is increased into the auxiliary of the UE
In cell list.
5. method according to claim 4, it is characterised in that described one secondary cell of selection is：By the auxiliary small of the UE
The secondary cell not occurred in area in this A3 measurement report is as selected cell.
6. method according to claim 4, it is characterised in that described one secondary cell of selection is：In the auxiliary small of the UE
Arbitrarily one secondary cell of selection is used as selected cell in area.
7. according to the method described in claim 1, it is characterised in that the Scell activation conditions are：
The channel quality of the main plot of the UE is more than default back-off thresholding and default back-off hysteresis factors toff
Sum.
8. according to the method described in claim 1, it is characterised in that the Scell deactivates condition and is：
The channel quality of the main plot of the UE is less than default back-off thresholding and default back-off hysteresis factors toff
Difference.
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Families Citing this family (13)
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| CN105323051B (en) * | 2014-08-01 | 2018-10-12 | 中国移动通信集团公司 | A kind of cell configuring method, device and net background applied to carrier wave polymerization |
| CN105472634A (en) * | 2014-08-20 | 2016-04-06 | 中兴通讯股份有限公司 | Carrier aggregation cell processing method, processing device, terminal and base station |
| WO2016074185A1 (en) * | 2014-11-13 | 2016-05-19 | Qualcomm Incorporated | Standalone carrier sense adaptive transmission (csat) in unlicensed spectrum |
| WO2016119179A1 (en) * | 2015-01-29 | 2016-08-04 | 华为技术有限公司 | Measurement event configuration method and device |
| CN105120475B (en) * | 2015-07-17 | 2018-09-28 | 中国联合网络通信集团有限公司 | A kind of method and device of management secondary cell |
| CN106412944A (en) * | 2015-07-29 | 2017-02-15 | 中兴通讯股份有限公司 | Method for implementing SCell control, terminal and network side |
| CN105228203A (en) * | 2015-10-14 | 2016-01-06 | 中国联合网络通信集团有限公司 | A kind of cell configuring method and device |
| CN108234085A (en) * | 2016-12-14 | 2018-06-29 | 中国电信股份有限公司 | Carrier polymerizing method and terminal |
| CN113840344A (en) * | 2017-08-01 | 2021-12-24 | 上海朗帛通信技术有限公司 | Method and device used in user and base station of wireless communication |
| CN110324915B (en) * | 2018-03-29 | 2021-05-25 | 大唐移动通信设备有限公司 | Method and device for processing channel quality abnormity |
| CN111225388B (en) * | 2018-11-23 | 2022-03-29 | 大唐移动通信设备有限公司 | Carrier aggregation cell set optimization method and device |
| WO2020164070A1 (en) * | 2019-02-14 | 2020-08-20 | Nokia Shanghai Bell Co., Ltd. | Primary cell change |
| CN112399481A (en) * | 2019-08-13 | 2021-02-23 | 中兴通讯股份有限公司 | Flow distribution management method, device, base station and storage medium |
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