CN104717044B - The method and apparatus of user terminal selecting main carrier in carrier aggregation technology - Google Patents
The method and apparatus of user terminal selecting main carrier in carrier aggregation technology Download PDFInfo
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- CN104717044B CN104717044B CN201310682953.6A CN201310682953A CN104717044B CN 104717044 B CN104717044 B CN 104717044B CN 201310682953 A CN201310682953 A CN 201310682953A CN 104717044 B CN104717044 B CN 104717044B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The embodiment of the invention discloses a kind of method and apparatus of user terminal selecting main carrier in carrier aggregation technology, wherein, method includes：Signal intensity weighted product score value of the current signal strength of each frequency with presetting historical signal intensity in a period of time before in the network signal received is obtained respectively, and monitor physical downlink control channel PDCCH and carry out PDCCH decoding, the schedule information of cell physical resource is obtained, the schedule information of the cell physical resource includes frequency and the distribution information of time interval resource；It is comprehensive that main carrier is selected according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource.The embodiment of the present invention can avoid user terminal from concentrating on the standby imbalance for causing network load of some carrier wave.
Description
Technical field
The present invention relates to the communication technology, in especially a kind of carrier aggregation technology the method for user terminal selecting main carrier and
Device.
Background technology
With developing rapidly for mobile communication technology, Long Term Evolution（Long Term Evolution, LTE）Technology is positive
Advanced LTE（LTE-Advance）Evolution, a LTE-Advance technical characteristics are that by carrier aggregation.Carry
Ripple polymerization technique is to provide the user higher speed by polymerizeing multiple carrier waves.Carrier aggregation technology supports up load in theory
Ripple polymerize and descending carrier polymerization, but because technical conditions limit, carrier aggregation technology only provides descending carrier polymerization at present.
During the present invention is realized, inventor has found that prior art at least has problems with：
Due to that currently without up-link carrier polymerization is realized, therefore, must be used using the user of same main carrier identical
Up-link carrier, cause the uplink network overload of the main carrier.Because the selection of main carrier is the behavior of user terminal, mesh
Preceding technology mechanism is that user terminal is standby just using the carrier wave as main carrier in which carrier wave.Because user terminal can typically select
It is standby to select the preferable cell of signal, it is standby therefore, it is difficult to avoid user terminal from concentrating on some carrier wave, so as to cause subzone network
The imbalance of load.Although the load balancing of cell can be realized by the method switched after accessing user terminal to network, cut
Change of current journey can increase the signaling consumption of network.
The content of the invention
Technical problem to be solved of the embodiment of the present invention is：User terminal selecting master in a kind of carrier aggregation technology is provided
The method and apparatus of carrier wave, to avoid user terminal from concentrating on the standby imbalance for causing network load of some carrier wave.
The method of user terminal selecting main carrier in a kind of carrier aggregation technology provided in an embodiment of the present invention, including：
The current signal strength of each frequency in the network signal received is obtained respectively to go through with presetting in a period of time before
The signal intensity weighted product score value of history signal intensity, and monitor physical downlink control channel PDCCH and carry out PDCCH solution
Code, obtains the schedule information of cell physical resource, and the schedule information of the cell physical resource includes frequency and time interval resource
Distribute information；
It is comprehensive that main carrier is selected according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource.
In another embodiment of the above method of the present invention, the current letter of each frequency in the network signal received is obtained
Number intensity and the signal intensity weighted product score value of historical signal intensity in a period of time is preset before include：
Receive network signal and simultaneously demodulate the current signal strength of each frequency in network signal, and record current time with it is each
The current signal strength of frequency；
Obtain each frequency and presetting the historical signal intensity of each historical juncture in a period of time before, respectively according to default side
The current signal strength of each frequency and historical signal intensity are weighted processing by formula, obtain the signal intensity weighted product of each frequency
Score value.
In another embodiment of the above method of the present invention, in addition to：
It is comprehensive currently to be stayed according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource, judgement
Carrier wave is stayed if appropriate for as main carrier；
Main carrier is not suitable as in response to current resident carrier wave, the synthesis is performed and is added according to the signal intensity of each frequency
The operation of the schedule information selection main carrier of integrated value and cell physical resource is weighed, and is resided on the main carrier of the selection；
Main carrier is suitable as in response to current resident carrier wave, to be currently resident carrier wave as main carrier, continues to reside in
Currently on resident carrier wave.
In another embodiment of the above method of the present invention, comprehensive signal intensity weighted product score value according to each frequency and
The schedule information selection main carrier of cell physical resource includes：
Synthesis is strong according to the signal intensity weighted product score value of each frequency and the schedule information selection signal of cell physical resource
The carrier wave that degree weighted product score value is larger and frequency resource is idle is as main carrier.
The device of user terminal selecting main carrier in a kind of carrier aggregation technology provided in an embodiment of the present invention, including：
Signal intensity acquiring unit, for obtain respectively in the network signal received the current signal strength of each frequency with
The signal intensity weighted product score value of historical signal intensity in a period of time is preset before；
PDCCH decoding units, for monitoring PCCH and carrying out PDCCH decoding, obtain the scheduling letter of cell physical resource
Breath, the schedule information of the cell physical resource include frequency and the distribution information of time interval resource；
Decision unit, the scheduling for comprehensive signal intensity weighted product score value and cell physical resource according to each frequency are believed
Breath selection main carrier.
In another embodiment of said apparatus of the present invention, the signal intensity acquiring unit includes：
Memory cell, for storing signal intensity of each frequency at each moment；
Receiver, for receiving network signal and demodulating the current signal strength of each frequency in network signal, and depositing
Current time and the current signal strength of each frequency are recorded in storage unit；
Signal processing module, for obtain each frequency before preset a period of time in each historical juncture historical signal it is strong
Degree, the current signal strength of each frequency and historical signal intensity are weighted processing according to predetermined manner respectively, obtain each frequency
The signal intensity weighted product score value of rate.
In another embodiment of said apparatus of the present invention, the decision unit, it is additionally operable to comprehensive according to each frequency
The schedule information of signal intensity weighted product score value and cell physical resource, judge that user terminal is currently resident carrier wave if appropriate for work
For main carrier；Carrier wave is currently resident in response to user terminal and is not suitable as main carrier, performs the synthesis according to each frequency
The schedule information of signal intensity weighted product score value and cell physical resource selects the operation of main carrier, and indicating user terminal is resident
On the main carrier of the selection；And main carrier is suitable as in response to current resident carrier wave, continue to make to be currently resident carrier wave
For main carrier, currently it is resident so that user terminal continues to reside on carrier wave.
In another embodiment of said apparatus of the present invention, the decision unit, specifically for comprehensive according to each frequency
Signal intensity weighted product score value and cell physical resource schedule information selection signal intensity weighted integrated value is larger and frequency
The idle carrier wave of resource is as main carrier.
A kind of user terminal provided in an embodiment of the present invention, including the carrier aggregation that any of the above-described embodiment of the present invention provides
The device of user terminal selecting main carrier in technology.
The method and dress of user terminal selecting main carrier in the carrier aggregation technology provided based on the above embodiment of the present invention
Put, user terminal, the current signal strength of each frequency can be obtained in the network signal received respectively with presetting one section before
The signal intensity weighted product score value of historical signal intensity in time, and monitor PDCCH and carry out PDCCH decoding, obtain small
The schedule information of area's physical resource, including frequency and the distribution information of time interval resource；Synthesis adds according to the signal intensity of each frequency
Weigh the schedule information selection main carrier of integrated value and cell physical resource.Compared with prior art so that the selection of main carrier is more
For equilibrium, avoid user terminal and concentrate on that some carrier wave is standby to cause the imbalance of network load, and avoid user's end
The increase of network signaling overhead caused by terminating the method switched after network.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
The accompanying drawing of a part for constitution instruction describes embodiments of the invention, and is used to explain together with description
The principle of the present invention.
Referring to the drawings, according to following detailed description, the present invention can be more clearly understood, wherein：
Fig. 1 is the flow chart of method one embodiment of user terminal selecting main carrier in carrier aggregation technology of the present invention.
Fig. 2 is the flow of another embodiment of the method for user terminal selecting main carrier in carrier aggregation technology of the present invention
Figure.
Fig. 3 is the structural representation of device one embodiment of user terminal selecting main carrier in carrier aggregation technology of the present invention
Figure.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless have in addition
Body illustrates that the unlimited system of part and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The scope of invention.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
The description only actually at least one exemplary embodiment is illustrative to be never used as to the present invention below
And its application or any restrictions that use.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is the flow chart of method one embodiment of user terminal selecting main carrier in carrier aggregation technology of the present invention.
As shown in figure 1, the method for user terminal selecting main carrier includes in the embodiment carrier aggregation technology：
110, the current signal strength of each frequency and default a period of time before in the network signal received are obtained respectively
The signal intensity weighted product score value of interior historical signal intensity, and monitor Physical Downlink Control Channel（Physical Downlink
Control Channel, PDCCH）And PDCCH decoding is carried out, obtain the schedule information of cell physical resource.
Wherein, the schedule information of cell physical resource includes distribution letter of all user terminals to frequency and time interval resource
Breath.
120, it is comprehensive that master is selected according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource
Carrier wave.
The method of user terminal selecting main carrier in the carrier aggregation technology provided based on the above embodiment of the present invention, can be with
It is strong with presetting historical signal in a period of time before that the current signal strength of each frequency in the network signal received is obtained respectively
The signal intensity weighted product score value of degree, and monitor PDCCH and carry out PDCCH decoding, obtain the scheduling of cell physical resource
Information, including frequency and the distribution information of time interval resource；Comprehensive signal intensity weighted product score value and cell thing according to each frequency
Manage the schedule information selection main carrier of resource.Compared with prior art so that the selection of main carrier is more balanced, avoids user
Terminal concentrates on that some carrier wave is standby to cause the imbalance of network load, and avoids what is switched after accessing user terminal to network
The increase of network signaling overhead caused by method.
Fig. 2 is the flow of another embodiment of the method for user terminal selecting main carrier in carrier aggregation technology of the present invention
Figure.As shown in Fig. 2 the method for user terminal selecting main carrier includes in the embodiment carrier aggregation technology：
210, receive network signal and demodulate the current signal strength of each frequency in network signal, and record current time
With the current signal strength of each frequency.
220, obtain each frequency and presetting the historical signal intensity of each historical juncture in a period of time before, respectively according to pre-
If the current signal strength of each frequency and historical signal intensity are weighted processing by mode, the signal intensity for obtaining each frequency adds
Weigh integrated value.
For example, the measurement period of network signal intensity is 0.1 second, the letter of some frequency can be obtained in the following way
Number intensity weighted integrated value：Signal intensity * 0.5+0.3 before signal intensity * 0.8+0.2 seconds of the current signal strength before+0.1 second
Signal intensity * 0.2 before second.
230, monitor PDCCH and carry out PDCCH decoding, obtain the schedule information of cell physical resource.
Wherein, the schedule information of cell physical resource includes distribution letter of all user terminals to frequency and time interval resource
Breath.
It should be noted that operation 230 is not present with operation 210~220 performs time sequencing limitation, the two can be simultaneously
Perform, can also be performed with the order of any priority.
240, it is comprehensive according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource, judge to work as
Preceding resident carrier wave is if appropriate for as main carrier.
If currently resident carrier wave is not suitable as main carrier, 250 operation is performed.Based on if currently resident carrier wave is suitable as
Carrier wave, then operation is not performed, to be currently resident carrier wave as main carrier, continued to reside in currently on resident carrier wave.
250, it is comprehensive that master is selected according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource
The operation of carrier wave, and reside on the main carrier of the selection.
According to a specific example of the embodiment of the method for user terminal selecting main carrier in carrier aggregation technology of the present invention
And it is unrestricted, it is comprehensive that main carrier is selected according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource
When, it can specifically integrate the schedule information selection signal of the signal intensity weighted product score value and cell physical resource according to each frequency
The carrier wave that intensity weighted integrated value is larger and frequency resource is idle is as main carrier.
Fig. 3 is the structural representation of device one embodiment of user terminal selecting main carrier in carrier aggregation technology of the present invention
Figure.The device of user terminal selecting main carrier can be used for realizing that the above-mentioned each carrier wave of the present invention gathers in the embodiment carrier aggregation technology
The embodiment of the method for user terminal selecting main carrier in conjunction technology.As shown in figure 3, it includes signal intensity acquiring unit, PDCCH
Decoding unit and decision unit.Wherein：
Signal intensity acquiring unit, for obtain respectively in the network signal received the current signal strength of each frequency with
The signal intensity weighted product score value of historical signal intensity in a period of time is preset before.
PDCCH decoding units, for monitoring PCCH and carrying out PDCCH decoding, obtain the scheduling letter of cell physical resource
Breath, wherein, the schedule information of cell physical resource includes all user terminals to frequency and the distribution information of time interval resource.
Decision unit, the scheduling for comprehensive signal intensity weighted product score value and cell physical resource according to each frequency are believed
Breath selection main carrier.
The device of user terminal selecting main carrier in the carrier aggregation technology provided based on the above embodiment of the present invention, can be with
It is strong with presetting historical signal in a period of time before that the current signal strength of each frequency in the network signal received is obtained respectively
The signal intensity weighted product score value of degree, and monitor PDCCH and carry out PDCCH decoding, obtain the scheduling of cell physical resource
Information, including frequency and the distribution information of time interval resource；Comprehensive signal intensity weighted product score value and cell thing according to each frequency
Manage the schedule information selection main carrier of resource.Compared with prior art so that the selection of main carrier is more balanced, avoids user
Terminal concentrates on that some carrier wave is standby to cause the imbalance of network load, and avoids what is switched after accessing user terminal to network
The increase of network signaling overhead caused by method.
Further, referring back to Fig. 3, the device of user terminal selecting main carrier is another in carrier aggregation technology of the present invention
In individual embodiment, signal intensity acquiring unit includes memory cell, receiver and signal processing module.Wherein：
Memory cell, for storing signal intensity of each frequency at each moment.
Receiver, for receiving network signal and demodulating the current signal strength of each frequency in network signal, and depositing
Current time and the current signal strength of each frequency are recorded in storage unit.
Signal processing module, for obtain each frequency before preset a period of time in each historical juncture historical signal it is strong
Degree, the current signal strength of each frequency and historical signal intensity are weighted processing according to predetermined manner respectively, obtain each frequency
The signal intensity weighted product score value of rate.
In carrier aggregation technology of the present invention in another embodiment of the device of user terminal selecting main carrier, decision unit
It can be additionally used in synthesis according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource, judge user's end
Carrier wave is currently resident if appropriate for as main carrier in end；If user terminal is currently resident carrier wave and is not suitable as main carrier, perform
The comprehensive operation that main carrier is selected according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource, and
Indicating user terminal is resided on the main carrier of the selection；And if currently resident carrier wave is suitable as main carrier, continue to work as
Preceding resident carrier wave is as main carrier, so that user terminal continues to reside in currently on resident carrier wave.
Shown according to one of the device embodiment of user terminal selecting main carrier in the above-mentioned each carrier aggregation technology of the present invention
Example and it is unrestricted, decision unit is specifically used for comprehensive the signal intensity weighted product score value according to each frequency and cell physical resource
The carrier wave that schedule information selection signal intensity weighted integrated value is larger and frequency resource is idle is as main carrier.
The embodiment of the present invention additionally provides a kind of user terminal, and it can include any of the above-described embodiment carrier wave of the present invention and gather
The device of user terminal selecting main carrier in conjunction technology.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and its
The difference of its embodiment, same or analogous part cross-reference between each embodiment.For device embodiment
For, because it is substantially corresponding with embodiment of the method, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation
Defend oneself bright.
The method, apparatus of the present invention may be achieved in many ways.For example, software, hardware, firmware or soft can be passed through
Part, hardware, any combinations of firmware realize methods and apparatus of the present invention.The said sequence of the step of for method be only for
Illustrate, be not limited to order described in detail above the step of method of the invention, unless specifically stated otherwise.
In addition, in certain embodiments, the present invention can be also embodied as recording program in the recording medium, these programs include being used for
Realize the machine readable instructions of the method according to the invention.Thus, the present invention also covering storage is used to perform according to the present invention's
The recording medium of the program of method.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
The embodiment of the present invention can utilize current signal strength, conventional signal intensity and network load condition comprehensive analysis
Judge whether that currently resident carrier wave is main carrier for selection, concentrate on that some carrier wave is standby to cause network so as to avoid user terminal
The imbalance of load.
Description of the invention provides for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be to more preferably illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The present invention is solved so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (7)
1. a kind of method of user terminal selecting main carrier in carrier aggregation technology, it is characterised in that including：
Receive network signal and demodulate the current signal strength of each frequency in network signal, and record current time and each frequency
Current signal strength；
Obtain each frequency and preset the historical signal intensity of each historical juncture in a period of time before, respectively will according to predetermined manner
The current signal strength of each frequency is weighted processing with historical signal intensity, obtains the signal intensity weighted integral of each frequency
Value；
Monitor physical downlink control channel PDCCH and carry out PDCCH decoding, obtain the schedule information of cell physical resource, institute
Stating the schedule information of cell physical resource includes frequency and the distribution information of time interval resource；
It is comprehensive that main carrier is selected according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource.
2. according to the method for claim 1, it is characterised in that also include：
It is comprehensive to be carried according to the signal intensity weighted product score value of each frequency and the schedule information of cell physical resource, current be resident of judgement
Ripple is if appropriate for as main carrier；
Main carrier is not suitable as in response to current resident carrier wave, performs signal intensity weighted product of the synthesis according to each frequency
The schedule information of score value and cell physical resource selects the operation of main carrier, and resides on the main carrier of the selection；
Main carrier is suitable as in response to current resident carrier wave, to be currently resident carrier wave as main carrier, continues to reside in currently
On resident carrier wave.
3. according to the method described in claim 1 to 2 any one, it is characterised in that the comprehensive signal intensity according to each frequency
The schedule information of weighted product score value and cell physical resource selection main carrier includes：
Synthesis adds according to the signal intensity weighted product score value of each frequency and the schedule information selection signal intensity of cell physical resource
The carrier wave that power integrated value is larger and frequency resource is idle is as main carrier.
A kind of 4. device of user terminal selecting main carrier in carrier aggregation technology, it is characterised in that including：
Signal intensity acquiring unit, for obtain respectively in the network signal received the current signal strength of each frequency with before
The signal intensity weighted product score value of historical signal intensity in default a period of time；The signal intensity acquiring unit includes：Storage
Unit, for storing signal intensity of each frequency at each moment；Receiver, for receiving network signal and demodulating network letter
The current signal strength of each frequency in number, and current time and the current signal strength of each frequency are recorded in the memory unit；Letter
Number processing module, the historical signal intensity of each historical juncture in a period of time is being preset before for obtaining each frequency, is being pressed respectively
The current signal strength of each frequency and historical signal intensity are weighted processing according to predetermined manner, the signal for obtaining each frequency is strong
Spend weighted product score value；
PDCCH decoding units, for monitoring PD CCH and carrying out PDCCH decoding, the schedule information of cell physical resource is obtained,
The schedule information of the cell physical resource includes frequency and the distribution information of time interval resource；
Decision unit, the schedule information for the comprehensive signal intensity weighted product score value according to each frequency and cell physical resource are selected
Select main carrier.
5. device according to claim 4, it is characterised in that the decision unit, be additionally operable to comprehensive according to each frequency
The schedule information of signal intensity weighted product score value and cell physical resource, judge that user terminal is currently resident carrier wave if appropriate for work
For main carrier；Carrier wave is currently resident in response to user terminal and is not suitable as main carrier, performs the synthesis according to each frequency
The schedule information of signal intensity weighted product score value and cell physical resource selects the operation of main carrier, and indicating user terminal is resident
On the main carrier of the selection；And main carrier is suitable as in response to current resident carrier wave, continue to make to be currently resident carrier wave
For main carrier, currently it is resident so that user terminal continues to reside on carrier wave.
6. according to the device described in claim 4 to 5 any one, it is characterised in that the decision unit, specifically for synthesis
According to the schedule information selection signal intensity weighted integrated value of the signal intensity weighted product score value of each frequency and cell physical resource
The idle carrier wave of larger and frequency resource is as main carrier.
7. a kind of user terminal, it is characterised in that including being used in the carrier aggregation technology described in claim 4 to 6 any one
The device of family terminal selection main carrier.
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| CN107294672B (en) * | 2016-03-30 | 2020-01-17 | 中国移动通信集团上海有限公司 | A scheduling method and device for cell carrier aggregation |
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| US9350501B2 (en) * | 2009-04-28 | 2016-05-24 | Mitsubishi Electric Corporation | Mobile communication system |
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| CN101925082A (en) * | 2009-06-09 | 2010-12-22 | 大唐移动通信设备有限公司 | Method, system and equipment for determining and monitoring main carrier and indicating and activating carrier |
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| CN102300247A (en) * | 2010-06-24 | 2011-12-28 | 中兴通讯股份有限公司 | Optimal selection method, device and system for main carrier |
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